CN106178873A - Waste gas processing method in the production of a kind of sodium hydrosulfite and waste gas treatment equipment - Google Patents
Waste gas processing method in the production of a kind of sodium hydrosulfite and waste gas treatment equipment Download PDFInfo
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- CN106178873A CN106178873A CN201610627553.9A CN201610627553A CN106178873A CN 106178873 A CN106178873 A CN 106178873A CN 201610627553 A CN201610627553 A CN 201610627553A CN 106178873 A CN106178873 A CN 106178873A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
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Abstract
The present invention relates to technical field of waste gas treatment, be specifically related to the waste gas processing method during a kind of sodium hydrosulfite produces and waste gas treatment equipment, waste gas processing method includes: step one, pretreatment；Step 2, alkali liquor sprays；Step 3, light oxonium ion oxidation catalysis；Step 4, oxidation spray；Step 5, absorption；Waste gas processing method can decompose the Toxic being difficult to decompose effectively, improves the efficiency that waste gas purification processes；Waste gas treatment equipment includes: what pretreatment unit was connected with pretreatment unit purifies caustic wash tower and purify the oxidizing tower that the light oxonium ion oxidation catalysis reactor that is connected of caustic wash tower is connected with light oxonium ion oxidation catalysis reactor and the strong adsorption tower of JS being connected with oxidizing tower, the most preprocessed device of waste gas, purification caustic wash tower, light oxonium ion oxidation catalysis reactor, oxidizing tower and the process of JS strong adsorption tower.This automation degree of equipment is high, has advantage easily operated, that production cost is low.
Description
Technical field
The present invention relates to technical field of waste gas treatment, be specifically related to the waste gas processing method during a kind of sodium hydrosulfite produces and give up
Gas disposal equipment.
Background technology
Sodium hydrosulfite, chemical entitled sodium dithionite (Na2S2O4), it is a kind of conventional chemical reducing agent, is commonly applied to spin
Reproducibility dyeing, reduction cleaning, stamp, decolouring and silk in weaver's industry, hair, the bleaching etc. of nylon fabrics.Sodium hydrosulfite produces
In the binder gas that is mainly derived from synthesis procedure tail gas, drying process of waste gas and incoagulable gas in vacuum process
Deng.What above waste gas all contained high concentration has corrosivity and virose sulfide, VOC type organic and inorganic matter, as
Waste gas is directly discharged in air by fruit, not only has irritating foul smell, also can cause environment and have a strong impact on so that damaging
The living environment of evil nature biotechnology.Especially with economic fast development, in production, the demand to sodium hydrosulfite increases day by day,
The waste gas being discharged in air is consequently increased.For preventing the Toxic in waste gas from poisoning environment, after waste gas purification is processed again
Discharge seems most important.
At present, the processing method of the waste gas during sodium hydrosulfite produces mainly uses sodium hydroxide liquid to absorb and oxidant oxygen
Change, but such purification dynamics still cannot effectively process the noxious substance being difficult to decompose, however it remains degree of purification inadequate
High and that purification efficiency is low problem.
Therefore, need the processing method of the waste gas improved during sodium hydrosulfite produces badly, to improve intensity and the efficiency of purified treatment,
Thus ensure the sound development of ecological environment and the sustainable development of social production.
Summary of the invention
Above-mentioned technical problem is there is, during one of the object of the invention is to provide a kind of sodium hydrosulfite to produce for prior art
Waste gas processing method, the method can be decomposed the noxious substance being difficult to decompose efficiently, be improve the efficiency that waste gas purification processes.
The two of the object of the invention are the waste gas treatment equipment in providing a kind of sodium hydrosulfite to produce, this automation degree of equipment
Height, has advantage easily operated, that production cost is low.
One of for achieving the above object, the present invention provides techniques below scheme:
Waste gas processing method in providing a kind of sodium hydrosulfite to produce, comprises the following steps,
Step one, pretreatment:
(1) methanol absorption: waste gas is through absorbing the methanol solution of sulfide, aldehydes, oxirane；
(2) condensation: will (1) process after gas through the condensation of deep cooling condensed fluid, thus remove can be by condensation at low temperature in gas
Material；
(3) alkali cleaning: the gas after (2) being processed rinses through alkali liquor, removes the sulfide in gas, aldehydes, epoxy further
Ethane, acidic materials and water-soluble substances, obtain the gas of pretreatment；
Step 2, alkali liquor sprays: gas step one obtained introduces and purifies caustic wash tower, purifies caustic wash tower and sprays alkali to waste gas
Liquid, thus absorb gas soluble in water the sour gas neutralizing in gas；
Step 3, light oxonium ion catalysis oxidation: gas step 2 obtained introduces light oxonium ion oxidation catalysis reactor, light oxygen
Ionic oxide formation catalytic reactor is produced from by hydroxy and Superoxide anion free radical, thus aldehydes in oxidation Decomposition gas, benzene
Class, Ammonia, nitrogen oxides and sulfide, and odorant is decomposed, obtain noxious substance degraded the gas of stink removing；
Step 4, oxidation spray: the gas that step 3 obtained introduces oxidizing tower, oxidizing tower to gas shower liquid oxidizer,
Thus the most oxidizable gas in oxidizing gas, and remove excessive ion, Superoxide anion free radical and the sulfuration in gas
Thing；
Step 5, absorption: gas step 4 obtained introduces the strong adsorption tower of JS, adsorbent filler filled by the strong adsorption tower of JS, inhales
The material can being adsorbed in attached dose of further adsorbed gas.
Preferably, in described step one, methanol temperature is-50 ~ 10 DEG C, and the temperature of condensed fluid is-60 ~ 0 DEG C, described condensation
Liquid is sulfur dioxide-methanol condensed liquid.
Preferably, the alkali liquor in described step 2 is any one in sodium hydroxide or sodium carbonate liquor.
Preferably, the light oxonium ion oxidation catalysis reactor in described step 3 includes UV fluorescent tube and nano-TiO2Catalysis
Agent.
Preferably, the liquid oxidizer in described step 4 is any one in sodium hypochlorite or hydrogen peroxide.
Preferably, the adsorbent in described step 5 is activated carbon or fiber adsorbing material.
Preferably, the flow velocity in purifying caustic wash tower of the alkali liquor in described step 2 is 1 ~ 3m/s.
Preferably, the time of staying in purifying caustic wash tower of the gas in described step 2 is 20 ~ 40s.
Two for achieving the above object, the present invention provides techniques below scheme:
Waste gas treatment equipment in providing a kind of sodium hydrosulfite to produce, including pretreatment unit, purifies caustic wash tower and described Purification of alkali
Wash the oxidizing tower that is connected with described smooth oxonium ion oxidation catalysis reactor of light oxonium ion oxidation catalysis reactor that tower connects and
Adsorption tower strong with the JS that described oxidizing tower is connected, the most preprocessed device of waste gas, purification caustic wash tower, light oxonium ion oxidation catalysis
The strong adsorption tower of reactor, oxidizing tower and JS processes.
Preferably, the strong adsorption tower of described JS is also associated with exhaust apparatus, described exhaust apparatus include air-introduced machine and and with
The smoke exhaust pipe that described air-introduced machine connects.
Beneficial effects of the present invention:
(1) waste gas processing method during a kind of sodium hydrosulfite that the present invention provides produces, has first carried out pretreatment to waste gas, has located in advance
Reason include methanol absorption, condensation and alkaline cleaning procedure, methanol absorption by the temperature of methanol is set to uniform temperature so that
Methanol can absorb the sulfide in waste gas, aldehydes, oxirane；Condensation is that the principle utilizing boiling point between material different separates
Removing the material being condensed, alkali cleaning is i.e. absorption further, neutralization, oxidizing gas, alleviates the concentration of toxic gas in waste gas, because of
This, pretreatment can significantly reduce the concentration of noxious substance in waste gas, improves the efficiency of exhaust-gas treatment.
(2) waste gas processing method during a kind of sodium hydrosulfite that the present invention provides produces, uses the alkali liquor purified in caustic wash tower
Spray, alkali liquor not only can absorb toxic gas soluble in water, moreover it is possible to neutralizes the sour gas in gas, processes for subsequent gases
Alleviate load.
(3) waste gas processing method during a kind of sodium hydrosulfite that the present invention provides produces, after alkali cleaning processes, have employed light oxygen
Ionic oxide formation is catalyzed, and first arranges light oxonium ion oxidation catalysis, wherein, has UV fluorescent tube and nano-TiO in reactor2Catalyst is logical
Cross UV photon irradiation at nano-TiO2On catalyst, nano-TiO2Catalyst absorbs luminous energy and produces electronics leap and hole leap, warp
Cross further to combine and produce electron-hole pair, with the moisture content (H of waste gas surface adsorption2And oxygen (O O)2) reaction generation oxidation
Hydroxyl radical free radical (the OH of property ripple the most alive-) and Superoxide anion free radical (O2-、O-).The free hydroxy produced and superoxide ion are certainly
By base, there is the strongest redox ability, it is possible to various organic exhaust gas such as aldehydes, benzene class, Ammonia, nitrogen oxides, sulfide
And other VOC type organic and inorganic matter are reduced into carbon dioxide (CO under the effect of photochemical catalytic oxidation2), water (H2O) and
Other nontoxic material, the emission molecule after purifying is activated degraded, and stink disappears the most simultaneously, therefore, light oxygen
Ionic oxide formation catalysis produces has free hydroxy and the Superoxide anion free radical of extremely strong oxidizing force, can effectively by Toxic with
And the Toxic being difficult to degrade decomposes, improve the efficiency that waste gas purification processes, and free hydroxy and superoxide ion are freely
Base oxidability is strong, can be decomposed by Toxic at short notice, further increases the efficiency that waste gas purification processes.
(4) waste gas processing method during a kind of sodium hydrosulfite that the present invention provides produces, have employed oxidation spray, oxygen therein
The ion of agent and the excess in gas after light oxonium ion oxidation catalysis processes and ozone and a small amount of sulfide aoxidize
Absorb, and aoxidize the most oxidizable material, improve further and purify intensity.
(5) waste gas processing method during a kind of sodium hydrosulfite that the present invention provides produces, being responded all in exhaust-gas treatment
Carrying out at normal temperatures and pressures, reaction condition is gentle, it is easy to accomplish, this waste gas, after this processing method, reaches that " air Toxic is combined
Close discharge standard " secondary standard in GB16297-2012, there is good environmental effect.
(6) waste gas treatment equipment during a kind of sodium hydrosulfite that the present invention provides produces, is responded all at corresponding equipment
In complete, it is not necessary to cost of labor and management cost, have that automaticity is high, easily operated and the low advantage of production cost, and an energy
Enough it is applicable to the feature of large-scale production.
Accompanying drawing illustrates:
Pretreatment unit 1；
Purify caustic wash tower 2；
Light oxonium ion oxidation catalysis reactor 3；
Oxidizing tower 4；
The strong adsorption tower of JS 5；
Air-introduced machine 6；
Smoke exhaust pipe 7.
Detailed description of the invention
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with
Drawings and Examples, are further elaborated to the present invention.Should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Embodiment 1.
Waste gas processing method in a kind of sodium hydrosulfite production of the present embodiment, comprises the following steps:
Step one, pretreatment:
(1) methanol absorption: waste gas is passed through the methanol solution of-50 DEG C, thus absorb the sulfide in waste gas, aldehydes, epoxy second
Alkane；
(2) condensation: using the gas in condensed fluid condensation (1) of-60 DEG C, remove the material being condensed, wherein condensed fluid is two
Sulfur oxide-methanol condensed liquid；
(3) alkali cleaning: the gas in (3) is rinsed through alkali liquor, remove further the sulfide in gas, aldehydes, oxirane,
Acidic materials and water-soluble substances, obtain the gas of pretreatment；
Step 2, alkali liquor sprays: the gas of the gained of step one introduces purifying caustic wash tower, in the spray of the sodium hydroxide solution of 2%
Drench under Absorption, remove gas soluble in water and the sour gas having neutralized in gas, obtain under concentration of toxic gases
The gas of fall, in addition, it is necessary to automatically change sodium hydroxide absorbent solution according to concentration of lye change.
Step 3, light oxonium ion oxidation catalysis: the gas of the gained of step 2 is introduced the reaction of light oxonium ion oxidation catalysis
Device, the free hydroxy extremely strong by the oxidability that wherein produces and Superoxide anion free radical, free hydroxy and super oxygen from
Aldehydes in sub-free-radical oxidation decomposition gas, benzene class, Ammonia, nitrogen oxides, sulfide, and the Toxic being difficult to decompose and
Odorant molecular breakdown, obtains noxious substance degraded and gas that stink removes, wherein, during waste gas stop in the reactor
Between be 15s, Superoxide anion free radical concentration is 2mg/m3, the energy of UV photon is 600KJ/mol.
Step 4, oxidation spray: gas step 3 obtained introduces the bottom of oxidizing tower, the solution bottom oxidizing tower
Case is placed 2%(W/W) liquor natrii hypochloritis of concentration, submerged pump it is promoted to the spray equipment at oxidizing tower top, downward time
Sodium chlorate solution and exhaust contra-flow upwards are fully contacted reaction, and wherein, liquor natrii hypochloritis's flow velocity in tower is 1m/s, useless
The gas time of staying in tower is 20s, thus the most oxidizable gas in Strong oxdiative gas, and removes excess in gas
Ion and Superoxide anion free radical and a small amount of sulfide, obtain the gas of further oxidation Decomposition noxious substance, solvable in gas
Harmful gas be washed with water and wash to water, from flowing in liquor box, such cyclic oxidation washs, and every day is by the liquid in liquor box
It is emitted into water treatment facilities, then supplements new a collection of solution to liquor box.
Step 5, adsorbent: gas step 4 obtained introduces the strong adsorption tower of JS, the strong adsorption tower of JS uses activity
Carbon adsorbent, gas processes through activated carbon adsorbent, the gas being purified, and wherein, the strong adsorption tower of JS connects air-introduced machine, draws
Blower fan is extracted the gas purified out and discharges from smoke exhaust pipe.
Waste gas Toxic clearance after above process is more than 99.2%.
Embodiment 2.
Waste gas processing method in a kind of sodium hydrosulfite production of the present embodiment, comprises the following steps:
Step one, pretreatment:
(1) methanol absorption: waste gas is passed through the methanol solution of 10 DEG C, thus absorb the sulfide in waste gas, aldehydes, epoxy second
Alkane；
(2) condensation: using the gas in condensed fluid condensation (1) of-30 DEG C, remove the material being condensed, wherein condensed fluid is two
Sulfur oxide-methanol condensed liquid；
(3) alkali cleaning: rinsed through alkali liquor by the gas in (3), removes the sulfide in gas, aldehydes, oxirane further,
Obtain the gas of pretreatment；
Step 2, alkali liquor sprays: the gas of the gained of step one introduces purifying caustic wash tower, at the spray-absorption of sodium carbonate liquor
Under effect, remove gas soluble in water and the sour gas having neutralized in gas, obtain the gas that concentration of toxic gases declines
Body, in addition, it is necessary to automatically change sodium carbonate absorbent solution according to concentration of lye change.
Step 3, light oxonium ion oxidation catalysis: the gas of the gained of step 2 is introduced the reaction of light oxonium ion oxidation catalysis
Device, the free hydroxy extremely strong by the oxidability that wherein produces and Superoxide anion free radical, free hydroxy and super oxygen from
Aldehydes in sub-free-radical oxidation decomposition gas, benzene class, Ammonia, nitrogen oxides, sulfide, and the Toxic being difficult to decompose and
Odorant molecular breakdown, obtains noxious substance degraded and gas that stink removes, wherein, during waste gas stop in the reactor
Between be 15s, Superoxide anion free radical concentration is 10mg/m3, the energy of UV photon is 800KJ/mol.
Step 4, oxidation spray: gas step 3 obtained introduces the bottom of oxidizing tower, the solution bottom oxidizing tower
Case is placed 25%(W/W) hydrogen peroxide solution of concentration, submerged pump it is promoted to the spray equipment at oxidizing tower top, downward is double
Oxygen aqueous solution and exhaust contra-flow upwards are fully contacted reaction, and wherein, hydrogen peroxide solution flow velocity in tower is 3m/s, and waste gas exists
The time of staying in tower is 40s, thus the most oxidizable gas in Strong oxdiative gas, and remove the excessive ion in gas
With Superoxide anion free radical and a small amount of sulfide, obtain the gas of further oxidation Decomposition noxious substance, solvable having in gas
Evil gas is washed with water to be washed to water, and from flowing in liquor box, such cyclic oxidation washs, and the liquid in liquor box is discharged by every day
To water treatment facilities, then supplement new a collection of solution to liquor box.
Step 5, adsorbent: gas step 4 obtained introduces the strong adsorption tower of JS, the strong adsorption tower of JS uses activity
Carbon adsorbent, gas processes through activated carbon adsorbent, the gas being purified, and wherein, the strong adsorption tower of JS connects air-introduced machine, draws
Blower fan is extracted the gas purified out and discharges from smoke exhaust pipe.
Waste gas Toxic clearance after above process is more than 99.9%.
Embodiment 3.
Waste gas processing method in a kind of sodium hydrosulfite production of the present embodiment, comprises the following steps:
Step one, pretreatment:
(1) methanol absorption: waste gas is passed through the methanol solution of-20 DEG C, thus absorb the sulfide in waste gas, aldehydes, epoxy second
Alkane；
(2) condensation: using the gas in condensed fluid condensation (1) of 0 DEG C, remove the material being condensed, wherein condensed fluid is dioxy
Change sulfur-methanol condensed liquid；
(3) alkali cleaning: rinsed through alkali liquor by the gas in (3), removes the sulfide in gas, aldehydes, oxirane further,
Obtain the gas of pretreatment；
Step 2, alkali liquor sprays: the gas of the gained of step one introduces purifying caustic wash tower, in the spray of the sodium hydroxide solution of 2%
Drench under Absorption, remove gas soluble in water and the sour gas having neutralized in gas, obtain under concentration of toxic gases
The gas of fall, in addition, it is necessary to automatically change sodium hydroxide absorbent solution according to concentration of lye change.
Step 3, light oxonium ion oxidation catalysis: the gas of the gained of step 2 is introduced the reaction of light oxonium ion oxidation catalysis
Device, the free hydroxy extremely strong by the oxidability that wherein produces and Superoxide anion free radical, free hydroxy and super oxygen from
Aldehydes in sub-free-radical oxidation decomposition gas, benzene class, Ammonia, nitrogen oxides, sulfide, and the Toxic being difficult to decompose and
Odorant molecular breakdown, obtains noxious substance degraded and gas that stink removes, wherein, during waste gas stop in the reactor
Between be 20s, Superoxide anion free radical concentration is 8mg/m3, the energy of UV photon is 704KJ/mol.
Step 4, oxidation spray: gas step 3 obtained introduces the bottom of oxidizing tower, the solution bottom oxidizing tower
Case is placed 3%(W/W) liquor natrii hypochloritis of concentration, submerged pump it is promoted to the spray equipment at oxidizing tower top, downward time
Sodium chlorate solution and exhaust contra-flow upwards are fully contacted reaction, and wherein, liquor natrii hypochloritis's flow velocity in tower is 2m/s, useless
The gas time of staying in tower is 30s, thus the most oxidizable gas in Strong oxdiative gas, and removes excess in gas
Ion and Superoxide anion free radical and a small amount of sulfide, obtain the gas of further oxidation Decomposition noxious substance, solvable in gas
Harmful gas be washed with water and wash to water, from flowing in liquor box, such cyclic oxidation washs, and every day is by the liquid in liquor box
It is emitted into water treatment facilities, then supplements new a collection of solution to liquor box.
Step 5, adsorbent: gas step 4 obtained introduces the strong adsorption tower of JS, the strong adsorption tower of JS uses activity
Carbon adsorbent, gas processes through activated carbon adsorbent, the gas being purified, and wherein, the strong adsorption tower of JS connects air-introduced machine, draws
Blower fan is extracted the gas purified out and discharges from smoke exhaust pipe.
Waste gas Toxic clearance after above process is more than 99.9%.
Waste gas processing method during a kind of sodium hydrosulfite that the present invention provides produces can decompose be difficult to decompose poisonous effectively
Thing, improves the efficiency that waste gas purification processes, has the advantage that automaticity is high, easily operated and equipment investment is few, waste gas
After this processing method, reach the secondary standard in " air Toxic comprehensive discharge standard " GB16297-2012, have good
Environmental effect.
Embodiment 4.
A kind of sodium hydrosulfite of the present embodiment produce in waste gas treatment equipment, as it is shown in figure 1, include pretreatment unit 1, clean
Change caustic wash tower 2 and purify light oxonium ion oxidation catalysis reactor 3 and the light oxonium ion oxidation catalysis reactor that caustic wash tower 2 is connected
3 connect oxidizing towers 4 and with oxidizing tower 4 and process the strong adsorption tower of JS 5, the most preprocessed device of waste gas 1, purification caustic wash tower
2, light oxonium ion oxidation catalysis reactor 3, oxidizing tower 4 and process the strong adsorption tower of JS 5, wherein, JS strong adsorption tower 5 row of being also associated with
Device of air, described exhaust apparatus includes air-introduced machine 6 and and the smoke exhaust pipe 7 for aerofluxus that is connected with air-introduced machine 6, whole equipment
Automaticity is high, has easily operated and that production cost is low advantage, and can be applicable to the feature of large-scale production.
Last it should be noted that, above example is only in order to illustrate technical scheme, rather than the present invention is protected
Protecting the restriction of scope, although having made to explain to the present invention with reference to preferred embodiment, those of ordinary skill in the art should
Work as understanding, technical scheme can be modified or equivalent, without deviating from the reality of technical solution of the present invention
Matter and scope.
Claims (10)
1. the waste gas processing method during a sodium hydrosulfite produces, it is characterised in that: comprise the following steps,
Step one, pretreatment:
(1) methanol absorption: waste gas is through absorbing the methanol solution of sulfide, aldehydes, oxirane；
(2) condensation: will (1) process after gas through the condensation of deep cooling condensed fluid, thus remove can be by condensation at low temperature in gas
Material；
(3) alkali cleaning: the gas after (2) being processed rinses through alkali liquor, removes the sulfide in gas, aldehydes, epoxy further
Ethane, acidic materials and water-soluble substances, obtain the gas of pretreatment；
Step 2, alkali liquor sprays: gas step one obtained introduces and purifies caustic wash tower, purifies caustic wash tower and sprays alkali to waste gas
Liquid, thus absorb gas soluble in water the sour gas neutralizing in gas；
Step 3, light oxonium ion catalysis oxidation: gas step 2 obtained introduces light oxonium ion oxidation catalysis reactor, light oxygen
Ionic oxide formation catalytic reactor is produced from by hydroxy and Superoxide anion free radical, thus aldehydes in oxidation Decomposition gas, benzene
Class, Ammonia, nitrogen oxides and sulfide, and odorant is decomposed, obtain noxious substance degraded the gas of stink removing；
Step 4, oxidation spray: the gas that step 3 obtained introduces oxidizing tower, oxidizing tower to gas shower liquid oxidizer,
Thus the most oxidizable gas in oxidizing gas, and remove excessive ion, Superoxide anion free radical and the sulfuration in gas
Thing；
Step 5, absorption: gas step 4 obtained introduces the strong adsorption tower of JS, adsorbent filler filled by the strong adsorption tower of JS, inhales
The material can being adsorbed in attached dose of further adsorbed gas.
Waste gas processing method in a kind of sodium hydrosulfite the most according to claim 1 production, it is characterised in that: described step one
Middle methanol temperature is-50 ~ 10 DEG C, and the temperature of condensed fluid is-60 ~ 0 DEG C, and described condensed fluid is sulfur dioxide-methanol condensed liquid.
Waste gas processing method in a kind of sodium hydrosulfite the most according to claim 1 production, it is characterised in that: described step 2
In alkali liquor be any one in sodium hydroxide or sodium carbonate liquor.
Waste gas processing method in a kind of sodium hydrosulfite the most according to claim 1 production, it is characterised in that: described step 3
In light oxonium ion oxidation catalysis reactor include UV fluorescent tube and nano-TiO2Catalyst.
Waste gas processing method in a kind of sodium hydrosulfite the most according to claim 1 production, it is characterised in that: described step 4
In liquid oxidizer be any one in sodium hypochlorite or hydrogen peroxide.
Waste gas processing method in a kind of sodium hydrosulfite the most according to claim 1 production, it is characterised in that: described step 5
In adsorbent be activated carbon or fiber adsorbing material.
Waste gas processing method in a kind of sodium hydrosulfite the most according to claim 1 production, it is characterised in that: described step 2
In alkali liquor be 1 ~ 3m/s at the flow velocity purified in caustic wash tower.
Waste gas processing method in a kind of sodium hydrosulfite the most according to claim 1 production, it is characterised in that: described step 2
In gas be 20 ~ 40s in the time of staying purified in caustic wash tower.
9. the waste gas treatment equipment during a sodium hydrosulfite produces, it is characterised in that: include pretreatment unit, purify caustic wash tower and
The light oxonium ion oxidation catalysis reactor that described purification caustic wash tower connects is connected with described smooth oxonium ion oxidation catalysis reactor
Oxidizing tower and adsorption tower strong with the JS that described oxidizing tower is connected, the most preprocessed device of waste gas, purify caustic wash tower, light oxygen from
Sub-oxidation catalysis reactor, oxidizing tower and the strong adsorption tower of JS process.
Waste gas treatment equipment in a kind of sodium hydrosulfite the most according to claim 9 production, it is characterised in that: described JS is strong
Adsorption tower is also associated with exhaust apparatus, described exhaust apparatus include air-introduced machine and be connected with described air-introduced machine for aerofluxus
Smoke exhaust pipe.
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| CN108380014A (en) * | 2018-03-13 | 2018-08-10 | 成都大祺智科节能环保设备有限公司 | A kind of organic exhaust gas and offensive odor treatment device and technology |
| CN108469356A (en) * | 2018-04-09 | 2018-08-31 | 柳州化工股份有限公司 | A kind of sodium hydrosulfite with exhaust-gas treatment is synthetically produced analytical sampling device |
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| CN108211686A (en) * | 2017-12-05 | 2018-06-29 | 青岛科技大学 | A kind of tail gas photooxidation cracking purification method |
| CN108380014A (en) * | 2018-03-13 | 2018-08-10 | 成都大祺智科节能环保设备有限公司 | A kind of organic exhaust gas and offensive odor treatment device and technology |
| CN108380014B (en) * | 2018-03-13 | 2023-12-19 | 成都大祺智科节能环保设备有限公司 | Organic waste gas and malodor treatment method |
| CN108469356A (en) * | 2018-04-09 | 2018-08-31 | 柳州化工股份有限公司 | A kind of sodium hydrosulfite with exhaust-gas treatment is synthetically produced analytical sampling device |
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| CN110813016A (en) * | 2019-12-04 | 2020-02-21 | 武汉三立鼎兴科技有限公司 | Treatment process for methanol waste gas produced by coking |
| CN111821804A (en) * | 2020-07-06 | 2020-10-27 | 中船澄西船舶修造有限公司 | Ship flue gas purification device |
| CN117180962A (en) * | 2023-09-07 | 2023-12-08 | 苏州绿朗环境科技有限公司 | Malodorous waste gas treatment method for high-concentration sewage station |
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