CN103147434B - Treatment system and method for consolidating soft soil foundation by utilizing industrial waste gas heat - Google Patents
Treatment system and method for consolidating soft soil foundation by utilizing industrial waste gas heat Download PDFInfo
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Abstract
The invention provides a treatment system and a method for consolidating a soft soil foundation by utilizing industrial waste gas heat. The treatment system comprises an industrial waste gas heat separation device, a waste gas purification device, a tail gas collection and treatment system, a foundation soil mixing device and a gas pumping device. The method comprises the following steps of extracting pure carbon dioxide from the dedusted, desulfurized and denitrated waste gas heat by the separation device and the purification device; mixing a curing agent to foundation soil by the mixing device; and pumping the pure carbon dioxide into mixed soil by the gas pumping device to carbonize and consolidate the soft soil foundation. The waste gas purification device comprises an absorption chamber and a decomposition chamber which are sealed devices with valves, and a purification solution in the device is an alkali solution or a carbonate solution, or a mixture thereof, and can be recycled. The method and the treatment system fully utilize the industrial waste gas heat, so that the difficulty of resource utilization of the industrial waste gas heat is solved, and meanwhile, the construction efficiency of foundation consolidation and the strength of foundation soil are improved.
Description
Technical field
The present invention relates to a kind for the treatment of system and method for reinforcing soft ground, particularly a kind for the treatment of system and method for utilizing industrial waste gas thermal consolidating soft foundation, belongs to environmental geotechnical technical field.
Background technology
2007, in Intergovernmental Panel on Climate Change (IPCC) the Fourth Assessment Report, point out: " since mid-term in 20th century, global warming is due to due to the discharge of artificial greenhouse gases increases, especially carbon dioxide ".At present, mankind's activity causes that the discharge value of global carbon dioxide is about annual 24000000000 tons, and the gas concentration lwevel of accumulative total is 379ppm, exceedes preindustrially 33%, and every year the speed to exceed 1ppm is increased, and has caused many major disasters to the whole world.According to document statistics, the discharge value to 2025 of carbon dioxide year will be increased to 38,800,000,000 tons, and whole world environment-refugee has reached 2,500 ten thousand people, expects the year two thousand fifty, and the environment-refugee that global warming causes will reach 1.5 hundred million people, China's harm that also dark climate warms.Described in " policy and the action of China's reply climate change " white paper in 2008, the trend that climate in china warms and global general trend are basically identical.Hundred Years of China is carried out (1908-2007) earth's surface temperature on average and has been raise 1.1 DEG C, and over nearly 30 years, the extra large surface temperature of coastal area of china has risen 0.9 DEG C, coastal sea level rise 9cm.Predicting the outcome of Chinese Scientists shows: the year two thousand twenty Chinese festiva temperature on average will raise 1.3 DEG C～2.1 DEG C, and the year two thousand fifty will raise 2.3 DEG C～3.3 DEG C.This will cause that Extreme Weather-climate Events occurrence frequency increases, and rainfall distribution uneven phenomenon is more obvious, and Strong Precipitation Events occurrence frequency increases, and drought coverage continues to expand, and sea level rise, and trend is further aggravated.Therefore, carbon dioxide discharge-reduction has become the bottleneck of restriction economic society and Environmental Development.
The carbon dioxide of manufacture of cement discharge comprises: the carbon dioxide that the carbon dioxide that calcination of chamotte and fuel directly produce and calcined limestone generate indirectly; In theory, 1 ton of clinker of every production generates 0.511 ton of carbon dioxide, and coal combustion produces 0.383～0.704 ton of carbon dioxide.Add the carbon dioxide that while generating grog, Decomposition of Calcium Carbonate produces, 0.894～1.215 ton of carbon dioxide of 1 ton of clinker discharge of every production, in general, 1 ton of clinker of every production discharges approximately 1 ton of carbon dioxide.At present, the output of annual global portland cement exceedes 2,500,000,000 tons, and expecting the year two thousand fifty can double, the carbon dioxide that manufacture of cement produces is equivalent to all global anthropogenic discharges' 5～10%, there is statistics to claim, China's cement amount in 2008 exceedes 700,000,000 tons, and the CO2 emission total amount in cement production process accounts for 18%～22% of national CO2 emission total amount.
China, as the signatories to a treaty of responsible big developing country and capital of a country agreement, is bearing very heavy carbon dioxide discharge-reduction responsibility, the reduction of discharging of carbon dioxide, catches and seal up for safekeeping the concern that has caused government and scientific research circle, is an Important Problems of current environment engineering research.But carbon dioxide capture and Plugging Technology Applied are still in exploring and the starting stage, and its safety needs to continue inspection, and cost is relatively high.But in engineering construction, manufacture of cement is one of important sources of carbon dioxide generating, scientist's substitute of portland cement that begins one's study already both at home and abroad, as the Sorel cement of French institute's riel (Sorel) in 1867 invention, also claim magnesium cement or magnesia oxychloride cement; Australian Scientists John Harrison utilized activated magnesia to invent Tec-cements, Eco-cements and tri-kinds of Enviro-cements " green cement " in 2001 and 2004.Harrison has emphasized that novel Mg-bearing water mud has the advantage that some are better than portland cement simultaneously, and as activated magnesia can be produced at the temperature of low 600～750 DEG C than portland cement, and the calcining heat of manufacture of cement is up to 1450 DEG C; Producing 1 ton of magnesia needs the magnesium carbonate of 2.08 tons, produces the CO2 emission of approximately 1.4 tons, and producing 1 ton of quicklime needs 1.8 tons of limestones, and discharges approximately 0.79 ton of carbon dioxide; In addition, quicklime is early stage main soil body curing compound, there is fast hydration reaction and generate calcium hydroxide in the moisture in quicklime and soil, this reaction can reduce the water content in the soil body, improve soil mass property, calcium hydroxide has generated calcium silicates through gelatification, also can be generated by part limestone if pass into carbon dioxide, thus the intensity of raising solidified earth.Activated magnesia can react rapidly with water at normal temperatures, generate magnesium hydroxide, passing under carbon dioxide effect, can within a few hours, complete carbonization, can improve the intensity of solidified earth, its intensity be not less than the intensity of cement-soil has after tested absorbed carbon dioxide simultaneously, has significant environmental effect.
The fast-developing period of China in engineering construction, still have a large amount of Base Consolidation Engineering, and China is existing much about technology and the methods of ground stabilization, but current had treating apparatus is still deposited very large gap meeting the aspect such as low-carbon environment-friendly and efficiency of construction.
Therefore, in conjunction with the current present situation of above environmental problem and China, a kind for the treatment of system and method for utilizing industrial waste gas thermal consolidating soft foundation with independent intellectual property right of development, to China's carbon dioxide discharge-reduction, improve the ecological environment and to improve the aspects such as ground stabilization efficiency significant.
Summary of the invention
For the environmental problem of above-mentioned existence and the utilizability of industrial waste gas heat, the object of the present invention is to provide a kind of low-carbon (LC), environmental protection to utilize treatment system and the method for industrial waste gas thermal consolidating soft foundation, this invention simultaneously also can improve the reinforcing efficiency of ground.
Its technical solution is:
A kind for the treatment of system of utilizing industrial waste gas thermal consolidating soft foundation, it is characterized in that: comprise waste gas heat separator 5, waste gas purification apparatus, exhaust collection treating apparatus 15, foundation soil mixing plant, gas pumps into device, the air inlet port of described waste gas heat separator 5 is connected with the back-end sealing of anti-corrosive and thermal insulation pipe 4, the exhaust opening top of the front end of anti-corrosive and thermal insulation pipe 4 and chimney 1 is tightly connected by flange 2, anti-corrosive and thermal insulation pipe 4 is provided with outlet valve A3, described waste gas purification apparatus comprises absorption chamber 8 and decomposition chamber 10, absorption chamber 8 bottoms are connected by anticorrosion wireway 6 with waste gas heat separator 5, one end of anticorrosion wireway 6 is connected with waste gas heat separator 5, the other end of anticorrosion wireway 6 extend into absorption chamber 8 inner bottom parts, the bottom of absorption chamber 8 is communicated with by condensation pipe 19 with the bottom of decomposition chamber 10, condenser 18 is housed on condensation pipe 19, condensation pipe between absorption chamber 8 and condenser 18 is provided with control valve B17, decomposition chamber 10 is placed in heating cabinet 9, waste gas heat separator 5 is connected by anticorrosion heat pipe 7 with heating cabinet 9, anticorrosion heat pipe 7 one end are connected with waste gas heat separator 5, the other end of anticorrosion heat pipe 7 extend in heating cabinet 9, exhaust collection treating apparatus 15 is connected by anticorrosion wireway 14 with absorption chamber 8 tops, anticorrosion wireway 14 is provided with control valve A13, in decomposition chamber 10, be provided with temperature pick up 40, absorption chamber 8 tops are provided with step-down stack 11, step-down stack 11 is provided with outlet valve B12, described mixing plant comprises a frame 29, shaft 32, multiple stirring vanes 33, curing compound tank 31 and curing compound carrier pipe 30, shaft 32 is vertically attached in a frame 29, shaft 32 is connected by curing compound carrier pipe 30 with curing compound tank 31, described multiple stirring vane 33 is fixed on shaft 32, described gas pumps into device and comprises reducing valve 20, cooling aspiration pump 21, gas flowmeter 22, wireway 23, control valve C24, gas cylinder 25, compression pump 26, high-voltage tube 36 and pressure-control valve 37, decomposition chamber 10 tops and gas cylinder 25 tops are tightly connected by wireway 23, direction from decomposition chamber 10 to gas cylinder 25, on wireway 23, be provided with successively reducing valve 20, cooling aspiration pump 21, gas flowmeter 22 and control valve C24, wherein reducing valve 20 is placed between decomposition chamber 10 tops and cooling aspiration pump 21, adjacent with cooling aspiration pump 21 with decomposition chamber 10 tops, cooling aspiration pump 21 is placed between reducing valve 20 and gas flowmeter 22, adjacent with gas flowmeter 22 with reducing valve 20, control valve C24 is placed between gas flowmeter 22 and gas cylinder 25 tops, adjacent with gas cylinder 25 tops with gas flowmeter 22, compression pump 26 is placed in gas cylinder 25 tops, multiple ingress pipes 27 insert in foundation soil 28, described multiple ingress pipe 27 is connected with arm 38 respectively, one end of high-voltage tube 36 is communicated with the interior top of gas cylinder 25, the other end is connected with arm 38 by pressure-control valve 37.
Further, absorption chamber 8, decomposition chamber 10 and heating cabinet 9 are airtight container, hold reactant liquor 16 in absorption chamber 8, and decomposition chamber 10 bottom level are not less than the upper plane of reactant liquor 16 in absorption chamber 8, absorption chamber 8 adopts anti-corrosion material to make, and decomposition chamber 10 adopts the material of anticorrosion and heat conduction to make.
Further, described multiple stirring vane 33 is by bolt or be welded to connect the low side at shaft 32, shaft 32 is hollow form, described multiple stirring vane 33 is symmetry arrangement, can be 2 or 3 layers, on the shaft 32 between the two-layer stirring vane 33 of shaft low side, be provided with curing compound spout 34.
Further, ingress pipe 27 is provided with double air vent 39, and ingress pipe 27 is connected with arm 38, and foundation soil 28 surfaces of arm 38 tops are covered with diaphragm seal 35.
Utilize a method for industrial waste gas thermal consolidating soft foundation, it is characterized in that adopting following steps to realize:
A. utilize anti-corrosive and thermal insulation pipe 4 that the industrial waste gas heat after dedusting, desulphurization and denitration is input in waste gas heat separator 5, the waste gas after separation passes in absorption chamber 8 by anticorrosion wireway 6, and the heat after separation imports in heating cabinet 9 by anticorrosion heat pipe 7,
B. in absorption chamber 8, add reactant liquor 16, close outlet valve B12, open control valve A13, after the waste gas after separation fully reacts with reactant liquor 16, closed control valve A13 and reducing valve 20, open control valve B17 and control valve C24, waste gas is pressed into the reacted solution in absorption chamber 8 in decomposition chamber 10 by condensation pipe 19, and solution enters after decomposition chamber 10 completely, closed control valve B17, open control valve A13
C. the solution in decomposition chamber 10 decomposes under pyrolysis, generates carbon dioxide and steam, closing presure control valve 37, and cooling aspiration pump 21 is removed the steam generating in gas, and carbon dioxide is passed in gas cylinder 25 by wireway 23,
D. the present flow rate that gas flowmeter 22 is measured lower than normal discharge 10% time, closed control valve C24, opens control valve B17 and control valve A13 and reducing valve 20, and the solution in decomposition chamber 10 flows in absorption chamber 8 through condensation pipe 19 and condenser 18 under Action of Gravity Field, then closed control valve B17
E. repeat implementation step a-d, constantly produce gas,
F. according to hoisting velocity and the rotary speed of the radius of stirring vane 33 and shaft 32, curing compound transfer rate is set, by the curing compound carrier pipe 30 in foundation soil mixing plant, shaft 32 and curing compound spout 34, curing compound is sprayed into foundation soil 28 from curing compound tank 31, and pass through stirring vane 33 by curing compound and foundation soil 28 uniform stirrings
G. open pressure-control valve 37 and compression pump 26, the gas in gas cylinder 25 is imported in foundation soil 28 by high-voltage tube 36, arm 38, ingress pipe 27 and air vent 39.
Further, the waste gas after described separation comprises carbon dioxide, and described reactant liquor 16 is aqueous slkali or unsaturated carbonate salting liquid.
Further, described curing compound is active oxidation magnesium dust, quicklime powder or both mixtures.
Further, described reactant liquor 16 is the mixture of sodium hydroxide solution, potassium hydroxide solution, sodium carbonate liquor, solution of potassium carbonate or above-mentioned solution, after reactant liquor 16 reacts in absorption chamber 8, generate bicarbonate solution, and waste gas after separated is pressed in decomposition chamber 10.
Further, after the environment temperature of the shown decomposition chamber 10 of the temperature pick up 40 in described decomposition chamber 10 is not less than reactant liquor 16 reactions and be forced into the minimum temperature that the bicarbonate hot solution in decomposition chamber (10) is decomposed.
The invention has the beneficial effects as follows:
Owing to having adopted above technical scheme, a kind for the treatment of system and method for utilizing industrial waste gas thermal consolidating soft foundation of the present invention, the carbon dioxide adopting is from power plant, waste gas after the treated purification such as chemical plant or cement plant, reduce the discharge value of carbon dioxide in environment, owing to having used sodium in purifying exhaust air, the aqueous slkali of potassium or sodium, potassium carbonate solution or its mixed liquor, in decomposable process, also take full advantage of the waste heat giving off in industry, also realized sodium simultaneously, the aqueous slkali of potassium or sodium, recycling of potassium carbonate solution or its mixed liquor, save the cost of waste gas purification, ensure making full use of of waste heat, ground stabilization has been used active oxidation magnesium dust, quicklime powder or both mixtures, than common portland cement, the carbon dioxide that the activated magnesia of production equal in quality discharges with quicklime is relative less, also has significant low-carbon environment-friendly effect on raw material, carbon dioxide is passed in foundation soil, at the upper surface bedding of foundation soil diaphragm seal, in construction reinforcement process, also reduced the leakage of carbon dioxide, so also there is obvious environmental effect in the construction stage, foundation soil adopts taking activated magnesia and quicklime or both mixtures as curing compound, then passes into the carbon dioxide of certain pressure, and the carbonization of having accelerated foundation soil is solidified, and has realized the rapid growth of foundation soil strength, has higher construction reinforcement efficiency.
Brief description of the drawings
Below with reference to accompanying drawing 1, treatment system and the method for utilizing industrial waste gas thermal consolidating soft foundation of the present invention is elaborated.
Accompanying drawing 1 is the schematic diagram of a kind for the treatment of system of utilizing industrial waste gas thermal consolidating soft foundation of the present invention.
Wherein: 1-chimney, 2-flange, 3-outlet valve A, 4-anti-corrosive and thermal insulation pipe, 5-waste gas heat separator, the anticorrosion wireway of 6-, the anticorrosion heat pipe of 7-, 8-absorption chamber, 9-heating cabinet, 10-decomposition chamber, 11-step-down stack, 12-outlet valve B, 13-control valve A, the anticorrosion wireway of 14-, 15-exhaust collection treating apparatus, 16-reactant liquor, 17-control valve B, 18-condenser, 19-condensation pipe, 20-reducing valve, the cooling aspiration pump of 21-, 22-gas flowmeter, 23-wireway, 24-control valve C, 25-gas cylinder, 26-compression pump, 27-ingress pipe, 28-foundation soil, 29-stake frame, 30-curing compound carrier pipe, 31-curing compound tank, 32-shaft, 33-stirring vane, 34-curing compound spout, 35-diaphragm seal, 36-high-voltage tube, 37-pressure-control valve, 38-arm, 39-air vent, 40-temperature pick up.
Detailed description of the invention
A kind for the treatment of system and method for utilizing industrial waste gas thermal consolidating soft foundation, treatment system mainly pumps into device etc. by industrial waste gas heat separation device 5, waste gas purification apparatus, exhaust collection treating apparatus 15, foundation soil mixing plant, gas and forms, the waste gas directly producing in industry is carbon dioxide, nitrogen oxide, oxysulfide, nitrogen, ammonia, carbon monoxide etc., the high-temperature gas that entered into waste gas heat separator 5 is the gas of dedusting, desulphurization and denitration, is mainly carbon monoxide, carbon dioxide, nitrogen etc.Waste gas heat separator 5 is a kind of devices that absorb heat, but does not absorb gas, is absorbed and will reduce because of heat through the gas temperature of waste gas heat separator 5 by major part.One of its know-why: be analogous to radiator and solar absorber plate, but, conventional radiator be interior use be (maximum temperature can reach 98 DEG C) or taking steam as thermal medium (maximum temperature can reach 160 DEG C) taking water as thermal medium, in this waste gas heat separator 5, can conduction oil be thermal medium (maximum temperature can reach 400 DEG C).Two of its know-why: the alloying semiconductor nanocrystal technology that can use the Martin Ma Erduowa (Martin Maldovan) of the Massachusetts Institute of Technology (MIT) to research and develop, " thermal phonon (heat phonons) crystal " just can control the path of heat, heat energy is converged to (being generally used for heat energy power-generating), by with this technology, waste gas heat separator 5 also can absorb the heat that industrial waste gas is hankered greatly.Because this technology has more research relatively at energy field, therefore only do with simple declaration at this.The air inlet port of waste gas heat separator 5 is connected with the back-end sealing of anti-corrosive and thermal insulation pipe 4, anti-corrosive and thermal insulation pipe 4 front ends and chimney 1 exhaust opening top are tightly connected by flange 2, anti-corrosive and thermal insulation pipe 4 is provided with outlet valve A3, waste gas purification apparatus is made up of absorption chamber 8 and decomposition chamber 10, in absorption chamber 8, hold reactant liquor 16, reactant liquor 16 is mainly sodium, the aqueous slkali of potassium or sodium, the mixed liquor of the carbonate solution of potassium or this aqueous slkali and carbonate solution, with the bicarbonate solution that generates sodium or potassium after carbon dioxide reaction, in decomposition chamber 10, be through reacted corresponding bicarbonate solution in absorption chamber 8, after having reacted, absorption chamber 8 is pushed down in decomposition chamber 10 at gas pressure, in decomposition chamber 10, after solution pyrolysis, under Gravitative Loads, enter in absorption chamber 8.During device arranges, guarantee that the height of decomposition chamber 10 bottoms is higher than the upper liquid level in absorption chamber 8.
Absorption chamber 8 bottoms are connected by anticorrosion wireway 6 with waste gas heat separator 5, one end of anticorrosion wireway 6 is connected with waste gas heat separator 5, the other end of anticorrosion wireway 6 extend into absorption chamber 8 inner bottom parts, the bottom of absorption chamber 8 is communicated with by condensation pipe 19 with the bottom of decomposition chamber 10, condenser 18 is housed on condensation pipe 19, condensation pipe between absorption chamber 8 and condenser 18 is provided with control valve B17, decomposition chamber 10 is placed in heating cabinet 9, waste gas heat separator 5 is connected by anticorrosion heat pipe 7 with heating cabinet 9, anticorrosion heat pipe 7 one end are connected with waste gas heat separator 5, the other end of anticorrosion heat pipe 7 extend in heating cabinet 9, exhaust collection treating apparatus 15 is connected by anticorrosion wireway 14 with absorption chamber 8 tops, anticorrosion wireway 14 is provided with control valve A13, in decomposition chamber 10, be provided with temperature pick up 40, absorption chamber 8 tops are provided with step-down stack 11, step-down stack 11 is provided with outlet valve B12, described mixing plant comprises a frame 29, shaft 32, multiple stirring vanes 33, curing compound tank 31 and curing compound carrier pipe 30, shaft 32 is vertically attached in a frame 29, shaft 32 is connected by curing compound carrier pipe 30 with curing compound tank 31, described multiple stirring vane 33 is fixed on shaft 32, described gas pumps into device and comprises reducing valve 20, cooling aspiration pump 21, gas flowmeter 22, wireway 23, control valve C24, gas cylinder 25, compression pump 26, high-voltage tube 36 and pressure-control valve 37, decomposition chamber 10 tops and gas cylinder 25 tops are tightly connected by wireway 23, direction from decomposition chamber 10 to gas cylinder 25, on wireway 23, be provided with successively reducing valve 20, cooling aspiration pump 21, gas flowmeter 22 and control valve C24, wherein reducing valve 20 is placed between decomposition chamber 10 tops and cooling aspiration pump 21, adjacent with cooling aspiration pump 21 with decomposition chamber 10 tops, cooling aspiration pump 21 is placed between reducing valve 20 and gas flowmeter 22, adjacent with gas flowmeter 22 with reducing valve 20, control valve C24 is placed between gas flowmeter 22 and gas cylinder 25 tops, adjacent with gas cylinder 25 tops with gas flowmeter 22, compression pump 26 is placed in gas cylinder 25 tops, multiple ingress pipes 27 insert in foundation soil 28, described multiple ingress pipe 27 is connected with arm 38 respectively, one end of high-voltage tube 36 is communicated with the interior top of gas cylinder 25, the other end is connected with arm 38 by pressure-control valve 37.
Absorption chamber 8, decomposition chamber 10 and heating cabinet 9 are airtight container, in absorption chamber 8, hold reactant liquor 16, decomposition chamber 10 bottom level are not less than the upper plane of reactant liquor 16 in absorption chamber 8, and absorption chamber 8 adopts anti-corrosion material to make, and decomposition chamber 10 adopts the material of anticorrosion and heat conduction to make.
Stirring vane 33 is by bolt or be welded to connect the low side at shaft 32, shaft 32 is hollow form, described multiple stirring vane 33 is symmetry arrangement, can be 2 or 3 layers, on the shaft 32 between the two-layer stirring vane 33 of shaft low side, is provided with curing compound spout 34.Ingress pipe 27 is provided with double air vent 39, and ingress pipe 27 is connected with arm 38, and foundation soil 28 surfaces of arm 38 tops are covered with diaphragm seal 35.
Utilize the detailed description of the invention of industrial waste gas thermal consolidating soft foundation:
Although the employing in following each embodiment is sodium bicarbonate solution or potassium bicarbonate solution, also can use other bicarbonate solutions, this corresponding bicarbonate is being forced in the solution in decomposition chamber 10 of obtaining after 16 reactions of carbonic acid reactant liquor.Temperature pick up 40 is in decomposition chamber 10, so the shown temperature of temperature pick up 40 is the environment temperature in decomposition chamber 10, and bicarbonate can decompose at this temperature.
Embodiment 1
A. utilize anti-corrosive and thermal insulation pipe 4 that the industrial waste gas heat after dedusting is imported in industrial waste gas heat separation device 5, the waste gas after separation passes in absorption chamber 8 by anticorrosion wireway 6, and the heat after separation imports in heating cabinet 9 by anticorrosion heat pipe 7,
B. the reactant liquor 16 adding in absorption chamber 8 is sodium hydroxide solution, close outlet valve B12, open control valve A13, excess carbon dioxide gas fully reacts and generates after saturated sodium bicarbonate solution with solution, closed control valve A13 and reducing valve 20, open control valve B17 and control valve C24, waste gas is pressed into the saturated sodium bicarbonate solution of absorption chamber 8 in decomposition chamber 10 by condensation pipe 19, and solution enters after decomposition chamber 10 completely, closed control valve B17, open control valve A13
C. the gas that splits the carbon dioxide off under hot effect of the saturated sodium bicarbonate solution in decomposition chamber 10, wherein the temperature in decomposition chamber 10 is not less than the minimum temperature that corresponding sodium bicarbonate solution decomposes, then closing presure control valve 37, cooling aspiration pump 21 passes into carbon dioxide in gas cylinder 25 by wireway 23, wherein corresponding sodium bicarbonate solution is to obtain after reactant liquor 16 reactions, and is pressed onto in decomposition chamber 10 by waste gas.Temperature pick up 40 is in decomposition chamber 10, so the shown temperature of temperature pick up 40 is the environment temperature in decomposition chamber 10, and sodium acid carbonate can decompose at this temperature,
D. gas flowmeter 22 lower than normal discharge 10% time, closed control valve C24, opens control valve B17 and control valve A13 and reducing valve 20, and the solution in decomposition chamber 10 flows in absorption chamber 8 through condensation pipe 19 and condenser 18 under Action of Gravity Field, then closed control valve B17
E. repeat implementation step a-d, constantly produce carbon dioxide.
F. according to the hoisting velocity of the radius of stirring vane 33 and shaft 32, active oxidation magnesium dust transfer rate is set, by the curing compound carrier pipe 30 in foundation soil mixing plant, hollow form shaft 32 and curing compound spout 34, active oxidation magnesium dust is distributed in to foundation soil 28 from curing compound tank 31, and pass through stirring vane 33 by active oxidation magnesium dust and foundation soil 28 uniform stirrings
G. insert in foundation soil 28 vertical ingress pipe 27, and be connected on arm 38, open pressure-control valve 37 and compression pump 26, carbon dioxide in gas cylinder 25 is imported in foundation soil 28 by high-voltage tube 36, arm 38, ingress pipe 27 and air vent 39, and the carburizing reagent of foundation soil 28 need generate magnesium carbonate 35 times at diaphragm seal.
Embodiment 2
A. utilize anti-corrosive and thermal insulation pipe 4 that the industrial waste gas heat after dedusting is imported in industrial waste gas heat separation device 5, the waste gas after separation passes in absorption chamber 8 by anticorrosion wireway 6, and the heat after separation imports in heating cabinet 9 by anticorrosion heat pipe 7,
B. the reactant liquor 16 adding in absorption chamber 8 is sodium carbonate liquor, close outlet valve B12, open control valve A13, excess carbon dioxide gas fully reacts and generates after saturated sodium bicarbonate solution with solution, closed control valve A13 and reducing valve 20, open control valve B17 and control valve C24, waste gas is pressed into the saturated sodium bicarbonate solution of absorption chamber 8 in decomposition chamber 10 by condensation pipe 19, and solution enters after decomposition chamber 10 completely, closed control valve B17, open control valve A13
C. the gas that splits the carbon dioxide off under hot effect of the saturated sodium bicarbonate solution in decomposition chamber 10, wherein the temperature in decomposition chamber 10 is not less than the minimum temperature that corresponding sodium bicarbonate solution decomposes, then closing presure control valve 37, cooling aspiration pump 21 passes into carbon dioxide in gas cylinder 25 by wireway 23, wherein corresponding sodium bicarbonate solution is to obtain after reactant liquor 16 reactions, and is pressed onto in decomposition chamber 10 by waste gas.Temperature pick up 40 is in decomposition chamber 10, so the shown temperature of temperature pick up 40 is the environment temperature in decomposition chamber 10, and sodium bicarbonate solution can decompose at this temperature,
D. gas flowmeter 22 lower than normal discharge 10% time, closed control valve C24, opens control valve B17 and control valve A13 and reducing valve 20, and the solution in decomposition chamber 10 flows in absorption chamber 8 through condensation pipe 19 and condenser 18 under Action of Gravity Field, then closed control valve B17
E. repeat implementation step a-d, constantly produce carbon dioxide.
F. according to the hoisting velocity of the radius of stirring vane 33 and shaft 32, active oxidation magnesium dust transfer rate is set, by the curing compound carrier pipe 30 in foundation soil mixing plant, hollow form shaft 32 and curing compound spout 34, active oxidation magnesium dust is distributed in to foundation soil 28 from curing compound tank 31, and pass through stirring vane 33 by active oxidation magnesium dust and foundation soil 28 uniform stirrings
G. insert in foundation soil 28 vertical gas introduction tube 27, and be connected on arm 38, open pressure-control valve 37 and compression pump 26, carbon dioxide in gas cylinder 25 is imported in foundation soil 28 by high-voltage tube 36, arm 38, ingress pipe 27 and air vent 39, and the carburizing reagent of foundation soil 28 need generate magnesium carbonate 35 times at diaphragm seal.
Embodiment 3
A. utilize anti-corrosive and thermal insulation pipe 4 that the industrial waste gas heat after dedusting is imported in industrial waste gas heat separation device 5, the waste gas after separation passes in absorption chamber 8 by anticorrosion wireway 6, and the heat after separation imports in heating cabinet 9 by anticorrosion heat pipe 7,
B. the reactant liquor 16 adding in absorption chamber 8 is potassium hydroxide solution, close outlet valve B12, open control valve A13, excess carbon dioxide gas fully reacts and generates after saturated potassium hydrogen carbonate solution with solution, closed control valve A13 and reducing valve 20, open control valve B17 and control valve C24, waste gas is pressed into the saturated potassium hydrogen carbonate solution of absorption chamber 8 in decomposition chamber 10 by condensation pipe 19, and solution enters after decomposition chamber 10 completely, closed control valve B17, open control valve A13
C. the gas that splits the carbon dioxide off under hot effect of the saturated potassium hydrogen carbonate solution in decomposition chamber 10, wherein the temperature in decomposition chamber 10 is not less than the minimum temperature that corresponding potassium bicarbonate solution decomposes, then closing presure control valve 37, cooling aspiration pump 21 passes into carbon dioxide in gas cylinder 25 by wireway 23, wherein corresponding potassium bicarbonate solution is that reactant liquor 16 obtains with waste gas reaction later, and is pressed onto in decomposition chamber 10 by waste gas.Temperature pick up 40 is in decomposition chamber 10, so the shown temperature of temperature pick up 40 is the environment temperature in decomposition chamber 10, and potassium bicarbonate solution can decompose at this temperature,
D. gas flowmeter 22 lower than normal discharge 10% time, closed control valve C24, opens control valve B17 and control valve A13 and reducing valve 20, and the solution in decomposition chamber 10 flows in absorption chamber 8 through condensation pipe 19 and condenser 18 under Action of Gravity Field, then closed control valve B17
E. repeat implementation step a-d, constantly produce carbon dioxide.
F. according to the hoisting velocity of the radius of stirring vane 33 and shaft 32, quicklime transfer rate is set, by the curing compound carrier pipe 30 in foundation soil mixing plant, hollow form shaft 32 and curing compound spout 34, quicklime is distributed in to foundation soil 28 from curing compound tank 31, and pass through stirring vane 33 by quicklime and foundation soil 28 uniform stirrings
G. insert in foundation soil 28 vertical gas introduction tube 27, and be connected on arm 38, open pressure-control valve 37 and compression pump 26, carbon dioxide in gas cylinder 25 is imported in foundation soil 28 by high-voltage tube 36, arm 38, ingress pipe 27 and air vent 39, and the carburizing reagent of foundation soil 28 need generate calcium silicates and calcium carbonate 35 times at diaphragm seal.
Embodiment 4
A. utilize anti-corrosive and thermal insulation pipe 4 that the industrial waste gas heat after dedusting is imported in industrial waste gas heat separation device 5, the waste gas after separation passes in absorption chamber 8 by anticorrosion wireway 6, and the heat after separation imports in heating cabinet 9 by anticorrosion heat pipe 7,
B. the equal proportion mixed liquor that the reactant liquor 16 adding in absorption chamber 8 is sodium hydroxide solution and sodium carbonate liquor, close outlet valve B12, open control valve A13, excess carbon dioxide gas fully reacts and generates after saturated sodium bicarbonate solution with solution, closed control valve A13 and reducing valve 20, open control valve 17 and control valve C24, waste gas is pressed into the saturated sodium bicarbonate solution of absorption chamber 8 in decomposition chamber 10 by condensation pipe 19, solution enters after decomposition chamber 10 completely, closed control valve B17, open control valve A13
C. the gas that splits the carbon dioxide off under hot effect of the saturated sodium bicarbonate solution in decomposition chamber 10, wherein the temperature in decomposition chamber 10 is not less than the minimum temperature that corresponding sodium bicarbonate solution decomposes, then closing presure control valve 37, cooling aspiration pump 21 passes into carbon dioxide in gas cylinder 25 by wireway 23, wherein corresponding sodium bicarbonate solution is to obtain after reactant liquor 16 reactions, and is pressed onto in decomposition chamber 10 by waste gas.Temperature pick up 40 is in decomposition chamber 10, so the shown temperature of temperature pick up 40 is the environment temperature in decomposition chamber 10, and sodium bicarbonate solution can decompose at this temperature,
D. gas flowmeter 22 lower than normal discharge 10% time, closed control valve C24, opens control valve B17 and control valve A13 and reducing valve 20, and the solution in decomposition chamber 10 flows in absorption chamber 8 through condensation pipe 19 and condenser 18 under Action of Gravity Field, then closed control valve B17
E. repeat implementation step a-d, constantly produce carbon dioxide.
F. according to the hoisting velocity of the radius of stirring vane 33 and shaft 32, active oxidation magnesium dust and quicklime equal proportion mixture transfer rate are set, by the curing compound carrier pipe 30 in foundation soil mixing plant, hollow form shaft 32 and curing compound spout 34, active oxidation magnesium dust and quicklime equal proportion mixture are distributed in to foundation soil 28 from curing compound tank 31, and pass through stirring vane 33 by the mixture of active oxidation magnesium dust and quicklime equal proportion and foundation soil 28 uniform stirrings
G. insert in foundation soil 28 vertical gas introduction tube 27, and be connected on arm 38, open pressure-control valve 37 and compression pump 26, carbon dioxide in gas cylinder 25 is imported in foundation soil 28 by high-voltage tube 36, arm 38, ingress pipe 27 and air vent 39, and the carburizing reagent of foundation soil 28 need generate calcium silicates, calcium carbonate and magnesium carbonate 35 times at diaphragm seal.
Embodiment 5
A. utilize anti-corrosive and thermal insulation pipe 4 that the industrial waste gas heat after dedusting is imported in industrial waste gas heat separation device 5, the waste gas after separation passes in absorption chamber 8 by anticorrosion wireway 6, and the heat after separation imports in heating cabinet 9 by anticorrosion heat pipe 7,
B. the 1:3 mixed liquor that the reactant liquor 16 adding in absorption chamber 8 is sodium hydroxide solution and sodium carbonate liquor, close outlet valve B12, open control valve A13, excess carbon dioxide gas fully reacts and generates after saturated sodium bicarbonate solution with solution, closed control valve A13 and reducing valve 20, open control valve B17 and control valve C24, waste gas is pressed into the saturated sodium bicarbonate solution of absorption chamber 8 in decomposition chamber 10 by condensation pipe 19, solution enters after decomposition chamber 10 completely, closed control valve B17, open control valve A13
C. the gas that splits the carbon dioxide off under hot effect of the saturated sodium bicarbonate solution in decomposition chamber 10, wherein the temperature in decomposition chamber 10 is not less than the minimum temperature that corresponding sodium bicarbonate solution decomposes, then closing presure control valve 37, cooling aspiration pump 21 passes into carbon dioxide in gas cylinder 25 by wireway 23, wherein corresponding sodium bicarbonate solution is to obtain after reactant liquor 16 reactions, and is pressed onto in decomposition chamber 10 by waste gas.Temperature pick up 40 is in decomposition chamber 10, so the shown temperature of temperature pick up 40 is the environment temperature in decomposition chamber 10, and sodium bicarbonate solution can decompose at this temperature,
D. gas flowmeter 22 lower than normal discharge 10% time, closed control valve C24, opens control valve B17 and control valve A13 and reducing valve 20, and the solution in decomposition chamber 10 flows in absorption chamber 8 through condensation pipe 19 and condenser 18 under Action of Gravity Field, then closed control valve B17
E. repeat implementation step a-d, constantly produce carbon dioxide.
F. according to the hoisting velocity of the radius of stirring vane 33 and shaft 32, active oxidation magnesium dust transfer rate is set, by the curing compound carrier pipe 30 in foundation soil mixing plant, hollow form shaft 32 and curing compound spout 34, active oxidation magnesium dust is distributed in to foundation soil 28 from curing compound tank 31, and pass through stirring vane 33 by active oxidation magnesium dust and foundation soil 28 uniform stirrings
G. insert in foundation soil 28 vertical gas introduction tube 27, and be connected on arm 38, open pressure-control valve 37 and compression pump 26, carbon dioxide in gas cylinder 25 is imported in foundation soil 28 by high-voltage tube 36, arm 38, ingress pipe 27 and air vent 39, and the carburizing reagent of foundation soil 28 need generate magnesium carbonate 35 times at diaphragm seal.
Claims (9)
1. one kind is utilized the treatment system of industrial waste gas thermal consolidating soft foundation, it is characterized in that: comprise waste gas heat separator (5), waste gas purification apparatus, exhaust collection treating apparatus (15), mixing plant, gas pumps into device, the air inlet port of described waste gas heat separator (5) is connected with the back-end sealing of anti-corrosive and thermal insulation pipe (4), the exhaust opening top of anti-corrosive and thermal insulation pipe (4) front end and chimney (1) is tightly connected by flange (2), anti-corrosive and thermal insulation pipe (4) is provided with outlet valve A (3), described waste gas purification apparatus comprises absorption chamber (8) and decomposition chamber (10), absorption chamber (8) bottom is connected by anticorrosion wireway (6) with waste gas heat separator (5), one end of anticorrosion wireway (6) is connected with waste gas heat separator (5), the other end of anticorrosion wireway (6) extend into absorption chamber (8) inner bottom part, the bottom of absorption chamber (8) is communicated with by condensation pipe (19) with the bottom of decomposition chamber (10), condenser (18) is housed on condensation pipe (19), condensation pipe between absorption chamber (8) and condenser (18) is provided with control valve B (17), decomposition chamber (10) is placed in heating cabinet (9), waste gas heat separator (5) is connected by anticorrosion heat pipe (7) with heating cabinet (9), anticorrosion heat pipe (7) one end is connected with waste gas heat separator (5), the other end of anticorrosion heat pipe (7) extend in heating cabinet (9), exhaust collection treating apparatus (15) is connected by anticorrosion wireway (14) with the interior top of absorption chamber (8), anticorrosion wireway (14) is provided with control valve A (13), in decomposition chamber (10), be provided with temperature pick up (40), absorption chamber (8) top is provided with step-down stack (11), step-down stack (11) is provided with outlet valve B (12), described mixing plant comprises a frame (29), shaft (32), multiple stirring vanes (33), curing compound tank (31) and curing compound carrier pipe (30), shaft (32) is vertically attached in a frame (29), shaft (32) is connected by curing compound carrier pipe (30) with curing compound tank (31), described multiple stirring vane (33) is fixed on shaft (32), described gas pumps into device and comprises reducing valve (20), cooling aspiration pump (21), gas flowmeter (22), wireway (23), control valve C (24), gas cylinder (25), compression pump (26), high-voltage tube (36) and pressure-control valve (37), the interior top of decomposition chamber (10) and the interior top of gas cylinder (25) are tightly connected by wireway (23), from decomposition chamber (10) the direction of gas cylinder (25), on wireway (23), be provided with successively reducing valve (20), cooling aspiration pump (21), gas flowmeter (22) and control valve C (24), wherein reducing valve (20) is placed between decomposition chamber (10) top and cooling aspiration pump (21), adjacent with cooling aspiration pump (21) with decomposition chamber (10) top, cooling aspiration pump (21) is placed between reducing valve (20) and gas flowmeter (22), adjacent with gas flowmeter (22) with reducing valve (20), control valve C (24) is placed between gas flowmeter (22) and gas cylinder (25) top, adjacent with gas cylinder (25) top with gas flowmeter (22), compression pump (26) is placed in gas cylinder (25) top, multiple ingress pipes (27) insert in foundation soil (28), described multiple ingress pipe (27) is connected with arm (38) respectively, one end of high-voltage tube (36) is communicated with the interior top of gas cylinder (25), the other end is connected with arm (38) by pressure-control valve (37).
2. a kind for the treatment of system of utilizing industrial waste gas thermal consolidating soft foundation according to claim 1, it is characterized in that: absorption chamber (8), decomposition chamber (10) and heating cabinet (9) are airtight container, in absorption chamber (8), hold reactant liquor (16), decomposition chamber (10) bottom level is not less than the upper plane of reactant liquor (16) in absorption chamber (8), absorption chamber (8) adopts anti-corrosion material to make, and decomposition chamber (10) adopts the material of anticorrosion and heat conduction to make.
3. a kind for the treatment of system of utilizing industrial waste gas thermal consolidating soft foundation according to claim 1 and 2, it is characterized in that: described multiple stirring vanes (33) are by bolt or be welded to connect the low side in shaft (32), shaft (32) is hollow form, described multiple stirring vane (33) is symmetry arrangement, can be 2 or 3 layers, on the shaft (32) between the two-layer stirring vane (33) of shaft low side, be provided with curing compound spout (34).
4. a kind for the treatment of system of utilizing industrial waste gas thermal consolidating soft foundation according to claim 1 and 2, it is characterized in that: ingress pipe (27) is provided with double air vent (39), ingress pipe (27) is connected with arm (38), and foundation soil (28) surface of arm (38) top is covered with diaphragm seal (35).
5. utilize a method for industrial waste gas thermal consolidating soft foundation, it is characterized in that adopting following steps to realize:
A. utilize anti-corrosive and thermal insulation pipe (4) that the industrial waste gas heat after dedusting, desulphurization and denitration is input in waste gas heat separator (5), waste gas after separation passes in absorption chamber (8) by anticorrosion wireway (6), heat after separation imports in heating cabinet (9) by anticorrosion heat pipe (7)
B. in absorption chamber (8), add reactant liquor (16), close outlet valve B (12), open control valve A (13), after waste gas after separation fully reacts with reactant liquor (16), closed control valve A (13) and reducing valve (20), open control valve B (17) and control valve C (24), waste gas is pressed into the reacted solution in absorption chamber (8) in decomposition chamber (10) by condensation pipe (19), solution enters after decomposition chamber (10) completely, closed control valve B (17), open control valve A (13)
C. the solution in decomposition chamber (10) decomposes under pyrolysis, generate carbon dioxide and steam, closing presure control valve (37), cooling aspiration pump (21) is removed the steam generating in gas, and carbon dioxide is passed in gas cylinder (25) by wireway (23)
D. gas flowmeter (22) measure present flow rate lower than normal discharge 10% time, closed control valve C (24), open control valve B (17) and control valve A (13) and reducing valve (20), solution in decomposition chamber (10) flows in absorption chamber (8) through condensation pipe (19) and condenser (18) under Action of Gravity Field, then closed control valve B (17)
E. repeat implementation step a-d, constantly produce gas,
F. according to hoisting velocity and the rotary speed of the radius of stirring vane (33) and shaft (32), curing compound transfer rate is set, by the curing compound carrier pipe (30) in foundation soil mixing plant, shaft (32) and curing compound spout (34), curing compound is sprayed into foundation soil (28) from curing compound tank (31), and pass through stirring vane (33) by curing compound and foundation soil (28) uniform stirring
G. open pressure-control valve (37) and compression pump (26), the gas in gas cylinder (25) is imported in foundation soil (28) by high-voltage tube (36), arm (38), ingress pipe (27) and air vent (39).
6. a kind of method of utilizing industrial waste gas thermal consolidating soft foundation according to claim 5, is characterized in that: the waste gas after described separation comprises carbon dioxide, and described reactant liquor (16) is aqueous slkali or unsaturated carbonate salting liquid.
7. a kind of method of utilizing industrial waste gas thermal consolidating soft foundation according to claim 5, is characterized in that: described curing compound is active oxidation magnesium dust, quicklime powder or both mixtures.
8. a kind of method of utilizing industrial waste gas thermal consolidating soft foundation according to claim 6, it is characterized in that: described reactant liquor (16) is the mixture of sodium hydroxide solution, potassium hydroxide solution, sodium carbonate liquor, solution of potassium carbonate or above-mentioned solution, after reactant liquor (16) reacts in absorption chamber (8), generate bicarbonate solution, and waste gas after separated is pressed in decomposition chamber (10).
9. a kind of method of utilizing industrial waste gas thermal consolidating soft foundation according to claim 5, is characterized in that: the shown interior environment temperature of decomposition chamber (10) of temperature pick up (40) in described decomposition chamber (10) is not less than reactant liquor (16) reaction later and is forced into the minimum temperature of the bicarbonate solution thermal decomposition in decomposition chamber (10).
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| CN110512589B (en) * | 2019-09-02 | 2021-06-29 | 南京林业大学 | Vacuum drainage-reducing and magnesium oxide carbonization combined shallow ultra-soft foundation curing method |
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