CN101643656A - Coke making method by adding biomass energy to mixed coal - Google Patents
Coke making method by adding biomass energy to mixed coal Download PDFInfo
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Abstract
The invention relates to a coke making method by adding biomass energy to mixed coal, which is a technical proposal by mixing biomass fuel and mixed coal for making coke in a certain proportion. The method aims to replace coal for making coke with renewable energy sources, expand the resources of coal for making coke, reduce the independence on high-quality coal in the coke-making process and realize the optimal coke-making coal blending technology by using renewable energy sources instead of fossil energy sources. Compared with the prior traditional coal blending technique, the method has theadvantages of simple technique and low equipment cost, and does not require repetitive constructions and remodifications on technical equipment; therefore, the method can greatly reduce the coke-making cost, save large quantities of high-quality coal resources, propel the utilization of renewable energy sources to realize energy saving and emission reduction, and reduce the secondary pollution ofthe biomass energy sources to the environment. The realization of the project has obvious economic and social benefits.
Description
1. technical field
The present invention relates to a kind of method of utilizing coking in the adding biomass energy to mixed coal, particularly biomass energy is mixed the method for producing coke with mixed coal, affiliated technical field is coking chemistry and new energy field.
2. background technology
In the production and preparation process of coke, be to utilize different types of coking coal, after cooperating according to different ratios, mixed coal is added in the coking chamber of coke oven the product coke and the coke chemicals that under the secluding air condition, obtain through 1200 ℃ of high temperature carbonizations.Existing method is a kind of tradition and more ripe production technique; its shortcoming and defect is to need to consume a large amount of high-quality coals; although the coal resources in China ten minutes is abundant; but the resource-constrained of coking coal but is very limited; build up and to consume a large amount of coking coal resources every year along with some capacity coke oven in recent years; although but the resource of very big coking coal of the storage capacity of coal and rich coal is really fewer and feweri; it is exploitation time limit less than 20 years effectively; for good utilisation more and the limited high-quality coal resource of protection; iron and steel after the several years; smelter guarantees the supply of coke fuel; must seek use and dependence that a kind of alternative fuel reduces coking coal; some factories are in order reasonably to utilize coal resources now; enlarge the coking coal use range; the coal-blending coking experiment of research and utilization low-grade coal is to reduce rich coal; the cooperation ratio of coking coal.Technical solution of the present invention is to utilize to carry out coking in the adding biomass energy to mixed coal, substitutes the use that a certain proportion of mixed coal reduces coking coal.Introduce the article of some business researchs " weak cohesiveness meager coal is used in coking is produced " " fuel and chemical industry " 2008 the 39th the 04th phases of volume points out according to data of literatures, because coking coal shortage of resources, in short supply and the price of coking coal rises steadily, the profit margin of coal chemical enterprise is more and more littler, survival pressure is increasing, in order to reduce the coking cost, research substitutes the method for coking coal cleans with weak caking coal." research of coking cutting edge technology both at home and abroad " " fuel and chemical industry " 2008 the 39th the 3rd phases of volume have been introduced efficient and environmental protection development strategy of Japanese 21 century, utilize at the coking coal resources effective, the coking technology that active research is new, target are to utilize the ratio of low grade coal to bring up to 50% from 20% in the coking production process.The described method of utilizing weak caking coal or low grade coal to substitute coking coal that relates to of above-mentioned research and development reduces the use of high-quality caking coal, substitutes the high-quality coking coal with weak cohesiveness meager coal and low grade coal in the non-coking coal.
The present invention proposes the scheme of utilizing biomass energy to substitute coking coal, substitute coking coal with biomass energy with sneaking in the mixed coal, in existing coking mixed coal prescription, add a certain proportion of biological mass-energy fuel, purpose is to reduce fossil energy to use and save exhausted day by day coal resources, development and utilization renewable energy source energetically reduces the invention that coking coal enlarges the fuel of coking.According to another academic journals introductions such as " development of Jilin Province's biomass energy and prospect " " Jilin agricultural sciences " 2008.33 (2) and " research of Brazilian agriculture biomass energy and utilization " " Jilin agricultural sciences " 2008.33 (5), the present situation of the development and utilization of biomass energy, European Union is to pass through to the blending policy of the year two thousand twenty 10% biofuel bio-ethanol gasoline, reduce the fossil oil consumption, in order further to reduce dependence, require its each member states's industry must implement 10% biofuel blending target to petroleum import; The utilization of Japan's develop actively renewable energy source, advocating clean energy and renewable energy source energetically uses, point out that the year two thousand thirty will reduce greatly to the interdependency of oil, drop to 40% by present 50%, the ratio of renewable energy sources such as wind energy, sun power, biomass energy will rise to 20%; The U.S. advances the biomass energy development program as national strategy, the gasoline that proposes 2025 25% will replace with bio-ethanol, and the year two thousand thirty reaches 30% gasoline and will replace with bio-ethanol; Brazil planned 2025, made bio-ethanol output with sugarcane and reached 7,200 ten thousand tons, and far-seeing plan is 3.2 hundred million tons.
2008.2 the 26th the 1st phases of volume of " renewable energy source " 2008.12 the 26th volume the 6th phase " development of biomass coal and application " " renewable energy source " " straw briquette fuel process unit with mix burn generating research ", " new forms of energy and novel material " journal of writings such as the 2nd phase in 2008 have been introduced the present situation that China's biomass energy is develop and useedd, biomass energy is more and more to obtain people's attention and attention, its reputation almost is a kind of substitute products of oil and coal, " biomass " are the various organisms that produced by photosynthesis, to be sun power be stored in a kind of form of energy in the biology with the chemical energy form to bioenergy, and it is a kind of unique reproducible carbon source; Very big and the various occurring in nature that is present in of form of the standing stock of biomass energy, comprise common fuel wood, farm-forestry crop, maize straw, agricultural and forestry oddment etc., present transformation technology is that farmings such as straw, Chai Xin, woods waste are processed into compressing grains is a kind of biomass fuel that the present invention utilizes.Have coal reserves now at 10,070 hundred million tons according to the online up-to-date China of introducing in addition, workable reserves only is 2,000 hundred million tons, wherein the coking coal reserves only account for 1/4 of total reserves, coking coal, rich coal reserves are at below 40% of coking coal reserves, China's coke production capacity had reached 400,000,000 tons/year in 2008, calculate that thus the year two thousand fifty China will face the severe problem of coking coal exhaustion, and iron and steel, metallurgy, coking industry major power consumer mainly rely on fuel is primary energy source coal and oil more than 70%, and they all belong to fossil energy is Nonrenewable energy resources.Therefore utilize the clean environment firendly biomass energy of renewable energy source to substitute the great attention that coal is subjected to people, China is a large agricultural country, nearly hundred million tons of agricultural crop straws are arranged every year, directly burnt waste in vain, in recent years Guo Jia great attention is also released relevant preferential policy and is vigorously supported and promote straw power generation, stalk gas making, straw-returning, projects such as stalk compressing grains, although good ecological and social benefit are arranged, but direct economic benefit is very not outstanding, the reason that its difficulty is big is that the disposable apparatus input is bigger, and industrial scale is little, technology content is not high, especially the stalk compressing grains project of Tui Guanging stays in cooking fuel and arcola burning substantially, and described purposes is still direct combustion method, is not only renewable energy source is wasted, thermo-efficiency is low, and also can produce secondary pollution.According to another " Jilin agricultural sciences " in May, 2008 " China biomass energy technology exploitation situation and patent analyses " literary composition introduced so-called " biomass energy ", being the energy of containing in biomass, is that green plants is that chemical energy is stored energy in vivo by chlorophyll with conversion of solar energy.Comprise timber and forest industry waste, agricultural wastes, waterplant, oilseed plant, domestic waste etc.Advantage is that quantity is many, renewable, pollution-free, cost is low.The biomass energy technical development is divided into four-stage, wherein the quadravalence section is produced alcohol, Thermochemical Liquefaction, combustion gas catalysis for biomass and is produced hydrogen, the invention belongs to biomass energy technology and develop the development and the extension of quadravalence section, the present invention is a technological revolution on the new forms of energy development history, and will obtain the support of national policy.
The present invention program proposes to utilize the scheme of coking in the adding biomass energy to mixed coal, adding the certain proportion stalk fuel in mixed coal mixes with existing mixed coal, changed the direct combustion method of stalk fuel, realize the technical transform of biomass fuel, the charring process of renewable energy source has proposed innovation scheme for biomass energy comprehensive utilization from now on, biomass energy and mixed coal mixed refining coke are technological invention innovations in coking field, make a kind of clean energy preferred plan of renewable energy conversion, the realization advantage of this programme is to have had quite complete production technique building the coke-oven plant, technical equipment does not need large-scale duplicate construction to realize.
3. summary of the invention
The present invention proposes a kind of method of utilizing coking in the adding biomass energy to mixed coal, biomass energy is mixed alternative coking coal with mixed coal, it is characterized in that, in mixed coal, add the use that biomass energy reduces coking coal, its mixed coal granularity accounts for more than 80% less than 3.0 millimeters, described biomass energy is added the method for coking in the mixed coal, it is characterized in that, the addition of described biomass energy is 3%-7%, i.e. the biomass energy of the biomass energy of 93 parts of mixed coals and 7 parts or 97 parts of mixed coals and 3 parts.Described biomass energy is added the method for coking in the mixed coal, biomass energy is meant the biomass energy compressing grains, comprise fuel wood, farm-forestry crop, maize straw etc., it is characterized in that described biomass energy is that maize straw is compressed into particle after crushed, add in the coking mixed coal in the 3%-7% ratio, biomass energy is a kind of renewable energy source, comprise fuel wood, farm-forestry crop, maize straw etc., it is characterized in that, described maize straw fuel through grinding particle size less than
Millimeter.Described mixed coal is meant the mixed coal by different ratios such as rich coal, coking coal, lean coal, 1/3 coking coal, bottle coal.Described mixed coal comprises rich coal, coking coal, lean coal, 1/3 coking coal, bottle coal, it is characterized in that, the ratio of each coal is 20%--30% rich coal, 30%--40% coking coal, 5%-10% lean coal, 25%-40%1/3 coking coal and 10%--20% bottle coal.Described biomass energy is added the method for coking in the coking mixed coal, it is characterized in that, mixed coal is to cooperate the technology of afterwards pulverizing earlier, it is characterized in that, mixed coal accounts for more than 80% for 3 millimeters through grinding particle size with the rice stalk fuel.
The present invention substitutes coking cleaned coal scheme with stalk fuel, it is few to be intended to solve the coking coal resource, coking technology for a kind of alternative coal of effectively utilizing coking coal resource research and development adds a certain amount of biomass fuel in the mixed coal process, be the optimal path that enlarges the coking coal resource.
The present invention compares with existing mixed coal and has the following advantages and effect
3.1 raw materials cost analysis
With existing coal blending scheme 20% Long Hu, 30% Kingsoft, 40% Hegang, 10% chapter estrade, price is 1286 yuan/ton of imperial lake rich coal, 1098 yuan/ton in Kingsoft coking coal, 854 yuan/ton of Hegangs, 905 yuan/ton of Zhang Taizi lean coals, 480 yuan/ton of stalk compressed fuels; Its pricing is as follows: 1286*20%+1098*30%+854*40%+905*10%=1018.7 (unit/ton) substitutes Hegang and lean coal pricing formula when adding different ratios 3%--7% biomass fuel:
1. 1286*20%+1098*30%+854*37%+905*10%+480*3%=1007.5 (unit/ton)
2. 1286*20%+1098*30%+854*33%+905*10%+480*7%=992.5 (unit/ton)
3. 1286*20%+1098*30%+854*40%+905*7%+480*3%=1005.6 (unit/ton)
4. 1286*20%+1098*30%+854*40%+905*3%+480*7%=989.0 (unit/ton):
Be reduced to 11.2-29.7 unit/ton by 1. 2. 3. 4. proving when described interpolation 3% or 7% biomass fuel when adding certain proportion stalk fuel mixed coal cost, for annual ten thousand tons of/year stalk fuels of 7-10 that consume of the enterprise that produces 1000000 tons of/year metallurgical cokes per year, the whole year can conservation coal cost nearly 30,000,000 yuan;
3.2 mixed coal mass analysis
With 3.1 existing coal blending schemes is example, and the mixed coal ash content is 9.11%, stalk fuel ash content 5.57%, and the mixed coal ash content reduces by 0.28% when adding 7% stalk fuel;
3.3 feeding system
The feeding system technical process of mixed coal is a known technology, and this programme adopts the coal blending process of pulverizing after the first coal blending, and feed coal is by coal yard → melt pit → crusher → blending bunker → pulverizer → auxiliary feed bin → coke oven; Stalk fuel is divided into granulates and on-the-spot the pulverizing: the stalk pelletization comprises raw material pulverizing, oven dry, compacting, cooling and finished product by special typing facility for granulating; With mixed coal mixing process raw material material loading → blending bunker → secondary pulverizer → blending bunker → pulverizer → auxiliary feed bin → coke oven.
3.4 coking mechanism
According to theoretical its coking principle of coking chemistry is coal and biomass fuel thermal decomposition process basically identical, the common cracking of biomass fiber matter and coal under the certain temperature condition.Difference be the stalk fuel cracking temperature when being 450-550 ℃ 95% biomass fiber matter transform and resolve into liquids and gases, a spot of solid residue is only arranged in coal; Coal decomposes and the polycondensation process temperature still has gas evolution during greater than 550 ℃, along with the rising of temperature begins to soften into semicoke, and generation coke when temperature reaches more than 1000 ℃, so biomass fuel and the common cracking carbonization process of coal product have certain difference.Especially raw material moisture, ash content, fugitive constituent, coking property etc. produce certain influence to process of coking, the bulk density that moisture increases mixed coal reduces, the material ash content hangs down and helps to reduce coke ash, high a large amount of coal gas and the tar of producing of volatile matter, caking index G value and join with coal particle size coking mechanism is had certain influence.
4. description of drawings
In conjunction with Figure of description the mixed coal technical process is described in detail, accompanying drawing is feed coal feeding system and mixed coal technical process.
Technical process is as follows:
Mixed coal: feed coal → coal yard → be subjected to coal melt pit → crusher → blending bunker → pulverizer → → auxiliary feed bin → coke oven;
Biomass fuel: raw material → pulverizing → oven dry → compacting granulating → former feed bin → blending bunker → secondary is pulverized → auxiliary feed bin → coke oven.
5. embodiment
Below in conjunction with process flow sheet and relevant analytical data, the resource situation of single kind of coking coal optimizes several groups of mixed coal schemes and specifies as follows with tabulating method;
The feeding system of mixed coal adopts the coal blending material loading process of pulverizing after the first coal blending, feed coal is by coal yard process melt pit, by travelling belt to crusher, enter in the blending bunker respectively through after the fragmentation,, be crushed to granularity through transfer point to pulverizer and deliver to auxiliary feed bin less than 3 millimeters and drop into coke furnace carbonization chamber then through shaking under material feeder and the uclear scale by blending bunker to travelling belt; The stalk particle gets off through feed bin and blending bunker, mixes with mixed coal through shaking material feeder and uclear scale, together enters auxiliary feed bin through pulverizer.This programme adds than being 3%--7% with stalk fuel, optimize several groups of experimental programs with existing coal blending scheme contrast, determine optimum mix according to different embodiments, give full play to coking coal and rich coal adhesive property skeleton function, satisfy invention and require to realize saving the high-quality coal resource.
5.1 coal resources general introduction
The coal store content of China has 10,070 hundred million tons, and workable reserves only is 2,000 hundred million tons, but its ature of coal mass discrepancy is very big, and most of coalfields ature of coal is not suitable for coking, so the resource of coking coal has not been inexhaustible.The workable reserves of verifying at present is 2,000 hundred million tons, the coal reserves that suitable coking is used account for total reserves less than 1/4., according to present be the energy consumption situation of main energy sources with coal, the trend that the coke production capacity increases year by year, the demand in downstream metallurgy, steel industry every year is in continuous increase, because what steel-making, ironmaking will be taken in the anxiety of high-quality coal resource and the continuous expansion in market from now on? therefore a kind of alternative fuel of essential searching.
5.2 preferred version
Subordinate list 1 existing several mixed coal schemes;
Subordinate list 2 raw materials quality analyses;
Subordinate list 3-1 and 3-2 are that stalk fuel substitutes Hegang or lean coal scheme.
With table 1 mixed coal " scheme one ", when table 2 analytical data adds 3%-7% during stalk fuel, calculate preferred version correlated quality index according to adding full average computation method, add the stalk fuel ratio greater than 10% o'clock, the caking index G value of mixed coal is less than 61, this mixed coal scheme is rejected, by table 1, table 2, table 3-1 and table 3-2 determine " scheme C " and " scheme C1 " and are best preferred mixed coal scheme, measuring method is carried out concerned countries standard mark, wherein the measuring method of moisture is GB GB/T211, the feed coal technical analysis, comprise ash content, fugitive constituent and fixed carbon are GB GB/T212, the sulphur content analysis determining method is GB GB/T215, feed coal plastometer indice measuring method is GB GB/T497, and the caking index measuring method of feed coal is GB GB/T5447.
Several mixed coal coal blending of table 1 scheme
| The coal blending test scheme | Dragon lake rich coal | Kingsoft coking coal | Hegang 1/3 | Chapter platform lean coal | Woods wins rich coal | Iron east coking coal | Gulf ditch coking coal | Stalk powder | The mixed coal cost |
| Coal blending scheme one | ??20％ | ??30％ | ??40％ | ??10％ | ??1018.7 | ||||
| Coal blending scheme two | ??40％ | ??10％ | ??20％ | ??30％ | |||||
| Coal blending scheme three | ??30％ | ??40％ | ??10％ | ??20％ | |||||
| Coal blending scheme four | ??20％ | ??40％ | ??10％ | ??30％ | |||||
| Coal blending scheme five | ??20％ | ??40％ | ??10％ | ??30％ | |||||
| Cost of material (unit/ton) | ??1286 | ??1098 | ??854 | ??905 | ??1085 | ??1089 | ??950 | ??480 |
The analysis of table 2 raw materials quality
Table 3-1 stalk fuel substitutes the coal blending scheme of 1/3 coking coal
| Embodiment | Dragon lake rich coal | Kingsoft coking coal | Hegang 1/3 Jiao | Chapter platform lean coal | Stalk powder | Coordinated scheme cost (unit/ton) | |
| The coal blending option A | ??20％ | ??30％ | ??37％ | ??10％ | ??3％ | ??1007.48 | |
| The coal blending option b | ??20％ | ??30％ | ??35％ | ??10％ | ??5％ | ??1000.0 | |
| Coal blending scheme C | ??20％ | ??30％ | ??33％ | ??10％ | ??7％ | ??992.52 | |
| Coal blending scheme D | ??20％ | ??30％ | ??30％ | ??10％ | ??10％ | ??981.3 | |
| Coal blending scheme E | ??20％ | ??30％ | ??25％ | ??10％ | ??15％ | ??962.6 |
Table 3-2 stalk fuel substitutes lean coal, 1/3 coking coal coal blending scheme
| Embodiment | Dragon lake rich coal | Kingsoft coking coal | Hegang 1/3 Jiao | Chapter platform lean coal | Stalk powder | Coordinated scheme cost (unit/ton) | |
| Coal blending option A 1 | ??20％ | ??30％ | ??40％ | ??7％ | ??3％ | ??1005.95 | |
| Coal blending option b 1 | ??20％ | ??30％ | ??40％ | ??5％ | ??5％ | ??997.45 | |
| Coal blending scheme C1 | ??20％ | ??30％ | ??40％ | ??3％ | ??7％ | ??988.95 | |
| Coal blending scheme D1 | ??20％ | ??30％ | ??40％ | ??10％ | ??976.2 | ||
| Coal blending scheme E1 | ??20％ | ??30％ | ??35％ | ??5％ | ??10％ | ??978.75 |
Concrete preferred coal blending scheme
One of real row: referring to table 3-1 coal blending option A 20% Long Hu, 30% Kingsoft, 37% Hegang, 10% lean coal and 3% stalk fuel, wherein cost is 1007.5 yuan/ton, reduce by 11.2 yuan/ton with existing production coal blending scheme comparative costs, quality index is ash content 9.11%, fugitive constituent 27.31%, caking index G value 71; Concrete implementation step: 1. go up coal and Coal Blending System and adopt the Production Flow Chart of pulverizing after the first coal blending, feed coal is through coal yard → melt pit → crusher → blending bunker, blending bunker coalings to distribute: 1# storehouse rich coal, 2# storehouse coking coal, 3# storehouse 1/3 coking coal, 4# storehouse lean coal, 5# storehouse stalk fuel, respectively is 20% Long Hu, 30% Kingsoft, 37% Hegang, 10% lean coal and 3% stalk fuel with Different Weight than coal blending by material feeder, i.e. 97 parts of feed coals and 3 parts of stalk powders.2. the stalk fuel production and the course of processing, stalk through pulverize pulverizings → oven dry → compacting granulating → secondary drying → pulverizing → blending bunker → secondary pulverizing → assist feed bin →.3. mixed coal and stalk powder are together pulverized through the pulverizer secondary, mix grinding particle size and account for more than 80% less than 3.0 millimeters.
Two of real row: substitute the Hegang scheme with 5% stalk powder referring to table 3-1 coal blending option b, 20% Long Hu, 30% Kingsoft, 35% Hegang, 10% lean coal and 5% stalk fuel, i.e. 95 parts of mixed coals and 5 parts of stalk fuels, wherein cost is 1000.0 yuan/ton, relatively reduce by 18.7 yuan/ton with existing production coal blending scheme, wherein mixed coal ash content 8.99%, fugitive constituent 28.18%, caking index G value 68 are concrete with one of real row implementation step.
Three of real row: C substitutes the Hegang embodiment with 7% stalk fuel by table 3-1 coal blending scheme, 20% Long Hu, 30% Kingsoft, 33% Hegang, 10% lean coal and 7% stalk fuel, promptly 93 parts of coking coals add 7 parts of stalk fuels, wherein cost is 992.52 yuan/ton, reduce by 26.2 yuan/ton with existing production blending ratio, mixed coal ash content 9.00%, fugitive constituent 29.05%, caking index G value 64 are concrete with one of real row.
Four of real row: D substitutes Hegang coal embodiment with 10% stalk fuel by table 3-1 coal blending scheme, 20% Long Hu, 30% Kingsoft, 30% Hegang, 10% lean coal and 10% stalk fuel, i.e. 90 parts of coking coals and 10 parts of stalk fuels, wherein cost is 981.3 yuan/ton, reduce by 37.4 yuan/ton with existing production blending ratio, mixed coal ash content 8.92%, fugitive constituent 30.35%, caking index G value 61, wherein fugitive constituent and caking index do not meet the requirement of preferred plan quality index, reject this scheme.
Five of real row: by table 3-2 coal blending option b
2Substitute the lean coal embodiment with 5% stalk fuel, i.e. 95 parts of coking mixed coals and 5 parts of stalk fuels, wherein cost is 997.45 yuan/ton, and existing production blending ratio reduces by 21.2 yuan/ton, ash content 8.98%, fugitive constituent 29.07%, caking index G value 70 are concrete with one of real row.
Six of real row: by table 3-1 option b and table 3-2 option b 2 is B+B2: the embodiment that substitutes lean coal with alternative Hegang coal of 5% stalk fuel and 5% stalk fuel, 20% Long Hu, 30% Kingsoft, 35% Hegang, 5% lean coal and 10% stalk fuel, i.e. 90 parts of coking mixed coals and 10 parts of stalk fuels, wherein cost is 978.0 yuan/ton, existing production blending ratio reduces by 41.0 yuan/ton, mixed coal ash content 8.84%, fugitive constituent 31.24%, caking index G value 59, because fugitive constituent and caking index do not meet the requirement of preferred plan quality index, this scheme is rejected.The result of described six groups of real row schemes shows, when adding the 3%-7% stalk fuel in the mixed coal, and mixed coal quality index preferred plan, priority scheme is option b, C and B
2, adding the stalk fuel adding proportion greater than 10% o'clock, the mixed coal fugitive constituent is higher, and mixed coal caking index G value does not meet the requirement of coal blending scheme less than 60.
5.3 prediction of quality
Subordinate list 4 preferred mixed coal mass analyses
Subordinate list 5 preferred version predictions of quality
The real row of described enforcement show with the subordinate list data analysis, utilize analytical data and calculate correlation formula establishment correlation table 4,5, adding the stalk fuel ratio by table 4 increases, the ash content of coke is on a declining curve, the increase of fugitive constituent increases gas production rate, when add the stalk fuel ratio greater than 10% the time its caking index G value less than 60, table 5 shows that coke ash is 11.94%, relatively reduce by 0.31% with existing coal blending scheme one, the check analysis method: the proximate analysis of coke method is carried out GB GB/T2001, physical strength measuring method GB GB/T2006, coke total sulphur content measuring method is GB GB/T2286, and coke reactivity and post-reaction strength test method are GB GB/T4000.
The preferred mixed coal mass analysis of table 4
Table 5 preferred version prediction of coke quality
Embodiment of the present invention is with test and breadboard analytical data on a kind of JN4.3--80II Formed Coke Furnace, by contrasting with joining of existing mixed coal with scheme, determine best preferred mixed coal scheme, the mixed coal proportioning is an option b: 20% Long Hu, 30% Kingsoft, 35% Hegang, 10% lean coal and 5% stalk fuel, scheme C:20% Long Hu, 30% Kingsoft, 33% Hegang, 10% lean coal and 7% stalk fuel and option b
2: 95 parts of coking mixed coals and 5 parts of stalk fuels, the fugitive constituent 24.0-28.0% of mixed coal, caking index G value 〉=64, add scheme in the mixed coal with stalk fuel, being to realize new technology of coke making and coal blending diversification, is to realize energy-saving and emission-reduction, reduces environmental pollution and falls, meet the important measures of Clean Development Mechanism energy-saving and emission-reduction, help coking industrial adjustment from now on and optimize energy structure.Described summary of the invention and existing mixed coal coking process relatively add in the sub-mixed coal of stalk fuel to substitute the coking high-quality coal, have very than remarkable economic efficiency, environmental benefit and social benefit.
Claims (7)
1. method of utilizing biomass energy to add coking in the mixed coal, biomass energy is mixed alternative coking coal with mixed coal, it is characterized in that, in mixed coal, add the use that biomass energy reduces coking coal, adding proportion is 3%-7%, and the mixed coal grinding particle size accounts for more than 80% less than 3 millimeters.
2. biomass energy according to claim 1 is added the method for coking in the mixed coal, it is characterized in that the addition of described biomass energy is 3%-7%, i.e. the biomass energy of the biomass energy of 97 parts of mixed coals and 3 parts or 93 parts of mixed coals and 7 parts.
3. method that is used for realizing that the described biomass energy of claim 1 is added mixed coal coking, biomass energy is meant a kind of compressing grains of renewable energy source biomass energy, comprise fuel wood, farm-forestry crop, maize straw etc., it is characterized in that, described biomass energy is that stalk is compressed into particle, add in the mixed coal in the 3%-7% ratio after crushed, wherein said mixed coal is to comprise that rich coal, coking coal, lean coal, 1/3 coking coal, bottle coal etc. cooperate by different ratios.
4. substitute the method for coking coal according to the described biomass energy of claim 3, the biomass energy of interpolation is a stalk fuel, it is characterized in that, described stalk grinding particle size less than
Millimeter.
5. according to the method for coking in the described biomass energy interpolation of claim 3 mixed coal, mixed coal mixes with stalk, it is characterized in that, the grinding particle size of described mixed coal and stalk is 3 millimeters and accounts for more than 80%.
6. add the method for coking in the mixed coal according to the described biomass energy of claim 3, described mixed coal has comprised rich coal, coking coal, lean coal, 1/3 coking coal, bottle coal, it is characterized in that each coal accounts for different ratios: 20%--30% rich coal, 30%--40% coking coal, 5%-10% lean coal, 25%-40%1/3 coking coal, 10%--20% bottle coal.
7. the method for adding coking in the coking mixed coal according to claim 4,5 described biomass energies is characterized in that, mixed coal is to adopt to join the coal blending technology that does not have the back to pulverize earlier.
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| ZA743325B (en) * | 1974-05-24 | 1976-02-25 | South African Coal Oil Gas | Improvements relating to a carbonaceous material |
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| CN106929041A (en) * | 2015-12-30 | 2017-07-07 | 北京三聚环保新材料股份有限公司 | A kind of process for upgrading of the moulded coal raw material for being coated with low-order coal and biological particles |
| CN106929045A (en) * | 2015-12-30 | 2017-07-07 | 北京三聚环保新材料股份有限公司 | A kind of coking process of biomass |
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| CN107338066A (en) * | 2017-08-29 | 2017-11-10 | 太原理工大学 | A kind of civilian clean coke and its production method |
| CN113174272A (en) * | 2021-04-07 | 2021-07-27 | 徐州工业职业技术学院 | Preparation method of bamboo charcoal powder used as coke preparation thinning agent and coke thinning process |
| CN114214082A (en) * | 2021-11-29 | 2022-03-22 | 山东钢铁股份有限公司 | Method for efficiently recycling fallen leaves |
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