CN106890543A - A kind of reaction end gas method of comprehensive utilization - Google Patents
A kind of reaction end gas method of comprehensive utilization Download PDFInfo
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- CN106890543A CN106890543A CN201710094578.1A CN201710094578A CN106890543A CN 106890543 A CN106890543 A CN 106890543A CN 201710094578 A CN201710094578 A CN 201710094578A CN 106890543 A CN106890543 A CN 106890543A
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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
- B01D53/14—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 by absorption
- B01D53/1406—Multiple stage absorption
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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
- B01D53/14—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 by absorption
- B01D53/1456—Removing acid components
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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
- B01D53/14—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 by absorption
- B01D53/1456—Removing acid components
- B01D53/1481—Removing sulfur dioxide or sulfur trioxide
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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
- B01D53/14—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 by absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
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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
- B01D53/73—After-treatment of removed components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/103—Water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/204—Inorganic halogen compounds
- B01D2257/2045—Hydrochloric acid
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Abstract
The present invention relates to a kind of reaction end gas method of comprehensive utilization, belong to the technical field that escaping gas is reclaimed from tail gas.Absorbed including the first order, N roads intermediate absorption and nitration mixture absorb, the described first order is absorbed using water as initial absorption agent, after tail gas absorbs through the first order, the liquid material removing SO of generation2（g）After form concentrated hydrochloric acid；Using water as absorbent, the recovered liquid of generation absorbs intermediate absorption as supplement absorbent reuse to the first order；Without HCl（g）Tail gas deliver to the nitration mixture with oxidisability in absorbed, the SO in tail gas2（g）It is converted into nitrosyl sulfuric acid.The regeneration and treatment for being applied to containing hydrogen chloride, form waste gas of sulfur dioxide will be invented, will have the advantages that removal efficiency is high, remove stabilization.
Description
Technical field
The present invention relates to a kind of reaction end gas method of comprehensive utilization, belong to the technology neck that escaping gas is reclaimed from tail gas
Domain.
Background technology
Sulfonic acid chloride is widely used in chlorination reaction as a kind of basic chemical industry raw material, is such as by alkane or aromatic hydrocarbons chlorination
Chloralkane or aromatic hydrocarbons etc., with chlorination completely, the advantages of side reaction is few, the accessory substance for obtaining is escaping gas, therefore institute
The chlorinated product for obtaining is easy to purifying.It is aborning the treatment of its reaction end gas using the greatest problem of sulfonic acid chloride, every mole just
The sulfonic acid chloride for often participating in chlorination reaction can produce one mole of hydrogen chloride and a mole of sulfur dioxide, inevitable if be not acted upon
Serious environmental pollution can be caused.
Existing conventional processing method is that classification absorbs：Most of mixed gas are absorbed with water first, hydrochloric acid and two are obtained
The mixture of sulfur oxide；Then will above be absorbed without absorbed gas buck again, obtained containing alkali, chlorate and sulfurous acid
The mixing spent lye of salt, the mixing spent lye that so treatment is obtained can only be processed as waste water, and processing cost is high；And first
Level absorbs the mixed acid that obtains cannot also be applied, generally also can only with alkali and after as wastewater treatment.Will in environmental protection
Ask under the social environment for increasingly improving, above-mentioned traditional exhaust gas treating method improves cost due to a large amount of consumption alkali, and by
Make environmental protection pressure big in a large amount of waste water containing heteroion of final generation.
In existing desulfurization technology, the calcium method based on lime, lime stone, the magnesium processes based on magnesia, with carbon
Sodium method application based on sour sodium, NaOH is relatively broad.Although those methods can make waste gas reach discharge standard, exist
The problem that equipment investment is big, operation and maintenance cost is high, and absorbent cannot realize recycling, and cause substantial amounts of resource wave
Take, and the accessory substance added value for obtaining is low, is difficult sale, easily causes the problem of secondary pollution.
Based on this, the application is made.
The content of the invention
For existing containing HCl（g）、SO2（g）Sulfonic acid chloride chlorination reaction tail gas absorption during existing processing cost
It is high, recycle the low defect of efficiency, the application provide a kind of Vapor recovery unit, be capable of achieving to recycle, to reclaim product utilization rate high
Reaction end gas method of comprehensive utilization.
A kind of reaction end gas method of comprehensive utilization, including the first order absorbs, N roads intermediate absorption and nitration mixture absorb, described
The first order is absorbed and is absorbed with water or/and supplement absorbent, after tail gas absorbs through the first order, the liquid material removing of generation
SO2（g）Form concentrated hydrochloric acid；, using water as absorbent, the recovered liquid of generation is used as supplement absorbent reuse to first for intermediate absorption
Level absorbs；Without HCl（g）Tail gas deliver to the nitration mixture with oxidisability in absorbed, the SO in tail gas2（g）It is converted into Asia
Nitryl sulfuric acid.
Further, as preferred：
During described nitration mixture absorbs, nitration mixture is formed by concentrated nitric acid and concentrated sulfuric acid mixture, the mixture mass ratio of concentrated nitric acid and the concentrated sulfuric acid
It is 1.3-1.8:1, it is 10-30 DEG C to absorb temperature.It is furthermore preferred that concentrated nitric acid is 1.5-1.7 with the mixture mass ratio of the concentrated sulfuric acid:1,
It is 15-25 DEG C to absorb temperature.
In described nitration mixture, the mass concentration of concentrated nitric acid is 65-80%, and the mass concentration of the concentrated sulfuric acid is 70-98%.More preferably
, described concentrated nitric acid mass concentration is 70%, and the mass concentration of the concentrated sulfuric acid is 96%.Dense nitre using mass concentration less than 80%
Acid（Preferably 70%, now its volatilization is relatively stablized, and will not produce a large amount of HNO3Volatile matter）It is possible to prevente effectively from it is largely waved
Hair forms new impurity and is mixed into tail gas, while also having played the oxidation of concentrated nitric acid；It is dense less than 98% using mass concentration
Sulfuric acid（Preferably 96%）, facilitate it with concentrated nitric acid mixture, it is possible to effectively play its oxidisability, by the SO in tail gas2（g）Hurry up
Speed is efficiently converted into nitrosyl sulfuric acid.
Described N=1, now intermediate absorption be second level absorption, the second level is absorbed using water as absorbent, and from the
Two grades of top inputs of absorption, the tail gas after first order absorption treatment absorbs top discharge from the first order, and is absorbed by the second level
Bottom feeding, tail gas through water absorb after, the diluted acid of generation（Watery hydrochloric acid）The solution feeding first order is absorbed as supplement absorbent,
Aqueous SO after the absorption treatment of the second level2Tail gas is absorbed in being then sent directly into nitration mixture.
Described N >=2, now intermediate absorption is absorbed by the second level, the third level absorbs ..., and N grades of absorption is constituted, the second level
Absorb, the third level is absorbed using water as absorbent, the top that wherein second level absorbs is input into water, after first order absorption is processed
Tail gas from the first order absorb top discharge, and by the second level absorb bottom send into, tail gas through water absorb after, the diluted acid of generation
（Watery hydrochloric acid）The solution feeding first order is absorbed as supplement absorbent, aqueous, HCl SO after second level absorption treatment2Tail gas is passed through
The third level absorbs bottom input；Top input water is absorbed from the third level, the tail gas during the third level is absorbed carries out the absorption of the 3rd road,
The diluted acid of generation is used as supplement absorbent etc., aqueous, HClSO after treatment2Tail gas feeding next stage absorbs, successively class
Push away, the tail gas after N grades of absorption treatment is aqueous SO2Tail gas, is sent directly into nitration mixture and is absorbed.
During the described first order absorbs, the SO of liquid material removing2（g）Confuse partial removal HCl waste gas out in the lump
SO is carried out into intermediate absorption2（g）Collect, both avoid SO2（g）Direct discharge, again can be by SO2（g）It is enriched with, is united
One is converted into nitrosyl sulfuric acid in nitration mixture absorption.
In described treatment process, during every mole of vent gas treatment, the initial absorption agent that the first order absorbs addition is 100g water,
The absorbent of every grade of intermediate absorption addition is 100g water.
Described nitration mixture is enough or excessive consumption, and every mole of tail gas correspondence 350g mixed acid solution is absorbed.
Compared with conventional treatment mode, the operation principle of the application and have the beneficial effect that：
（1）The main component of tail gas is converted into recovery product, and these recovery product impurity contents are few, can be used directly.
The pending object of the application is the tail gas with hydrogen chloride gas and sulfur dioxide gas as main component, first will with water-washing method
Hydrogen chloride is converted into hydrochloric acid solution, the concentrated hydrochloric acid in the hydrochloric acid solution（It is main to be produced in first order absorption）Scrubbing CO_2
After unstable hydrogen chloride, impurity is substantially free of, can be used directly as the first recovery finished product；In tail gas after washing not
When chloride, then the sulfur dioxide gas oxidation reaction in tail gas is formed into nitrosyl sulfuric acid with nitration mixture, the nitrosyl sulfuric acid is free of
Free sulphur, therefore can be used directly as the second recovery product.
（2）Hydrogen chloride gas in tail gas are soluble in water, meet water and are converted into hydrochloric acid, and concentrated hydrochloric acid therein is used as recovery product
Use, and in absorption process be more the generation of watery hydrochloric acid, these watery hydrochloric acid are main to be formed in intermediate absorption, due to exhausted
Most hydrogen chloride is all converted into hydrochloric acid in first order absorption, and the hydrogen chloride content for bringing rear road absorption into is smaller, causes to inhale
Concentration of hydrochloric acid is relatively low in receiving the liquid material for producing, and directly discharge is obviously unfavorable for environmental protection, is used as product is reclaimed, and needs
The larger cost of input and energy consumption are concentrated and purified, the application as supplement absorbent be applied to the first order absorb or
During corresponding preceding road absorbs, directly digestion not only reduces the usage amount of pure water in the system of regeneration technology, also
Turn waste into wealth, be translated into absorbent and use, due to what is produced during the supplement absorbent inherently tail gas absorption, because
Without bringing new component into, and the enrichment of chlorine is realized in absorption process, reach energy-conserving and environment-protective, low-loss and utilization rate effect high
Really.
（3）Sulfur dioxide is absorbed by nitration mixture in this application, and sulfur dioxide is dissolved in water and forms unstable
Sulfurous acid, therefore, in the processing procedure of the application, absorbed together by the sulfur dioxide removal entered in solution and after being enriched to
In, concentrate carries out oxidation processes using the nitration mixture with oxidisability, forms the nitrosyl sulfuric acid of stabilization.In nitration mixture processing procedure
In, nitration mixture is excessive or enough is absorbed, it is ensured that the abundant thorough absorption of sulfur dioxide, makes the technique to titanium dioxide in tail gas
Sulphur net content and total amount are less demanding, content of sulfur dioxide fluctuation（Water content is just）With total amount fluctuation product shadow is reclaimed to second
Sound can be ignored, and make the Vapor recovery unit of sulfur dioxide；Meanwhile, even if containing in the second recovery product nitrosyl sulfuric acid for being formed
There is a certain amount of nitration mixture, also have no effect on the normal of nitrosyl sulfuric acid and use, and sulfur dioxide in tail gas absolutely not contains trip
From sulphur.Although industrial useful pure sulfur dioxide prepares the technology of nitrosyl sulfuric acid, to the purity of raw material sulfur dioxide
It is required that it is very high, generally more than 99%, and there is strict demand to free sulfur content contained therein（0.1% is generally less than,
Seeking naked eyes can not observe free sulphur, and finished product needs to be controlled free sulfur content）.The application is processed with nitration mixture absorption pattern
The scheme of sulfur dioxide has satisfactorily resolved the sulfur dioxide in the mixed tail gas produced by thionyl chloride, prevented routine techniques with
Industrial goods sulfur dioxide prepares the defect containing free sulphur in nitrosyl sulfuric acid method.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the application.
Specific embodiment
The initial start respectively to regeneration technology of embodiment 1 and embodiment 2 and normal operating condition carry out the elaboration of scheme；
Embodiment 3 then prepares the elaboration that technical scheme is carried out based on nitrosyl sulfuric acid with nitration mixture absorption.
Embodiment 1
The present embodiment mainly includes two steps：
（1）The absorption of sulfonic acid chloride tail gas prepares concentrated hydrochloric acid
The chlorination reaction tail gas of 1mol sulfonic acid chlorides is carried out into two stage countercurrent absorptions with water respectively, wherein, the first order is added in absorbing
100g water, its liquid product（Hydrochloric acid）It is to obtain industrial concentrated hydrochloric acid A through scrubbing CO_2；100g is added in absorbing in the second level
Water, the second level absorbs the first order absorption aqueous solution that the watery hydrochloric acid B for obtaining is used as lower batch of material；Unabsorbed gases（It is main into
Part is sulfur dioxide, containing a small amount of hydrogen chloride and water）Into step（2）.
（2）Nitration mixture absorption prepares nitrosyl sulfuric acid
By step（1）In do not absorb gas（Main Ingredients and Appearance is sulfur dioxide, containing a small amount of hydrogen chloride and water）, then by 100 grams
Water absorbs（That is the third level in Fig. 1 absorbs）Afterwards, content of sulfur dioxide 95% after testing, water content 5%, with 350 grams by the concentrated sulfuric acid
The mixed acid solution prepared with concentrated nitric acid（Prepared by 140 gram of 70% concentrated nitric acid and 210 gram of 96% concentrated sulfuric acid）Absorb, absorb temperature control
In 15-20 degree, about need absorbed within 1 hour.
Content with permanganimetric method detection nitrosyl sulfuric acid is 41%, without chlorion.
Embodiment 2
（1）The absorption of sulfonic acid chloride tail gas prepares concentrated hydrochloric acid
The chlorination reaction tail gas of 1mol sulfonic acid chlorides is carried out into two stage countercurrent absorptions, wherein：The first order is absorbed with the in embodiment 1
Used as absorbent, resulting concentrated hydrochloric acid is to obtain industrial concentrated hydrochloric acid through scrubbing CO_2 to watery hydrochloric acid B obtained by two grades of absorptions,
Supplement 100g water is absorbed when the second level absorbs, and the watery hydrochloric acid for obtaining is used as the first order absorption aqueous solution of lower batch of material.Do not inhaled
The gas of receipts（Main Ingredients and Appearance is sulfur dioxide, containing a small amount of hydrogen chloride and water）Absorbed into next stage.
（2）Nitration mixture absorption prepares nitrosyl sulfuric acid
By step（1）In do not absorb gas（Main Ingredients and Appearance is sulfur dioxide, containing a small amount of hydrogen chloride and water）, then by 100 grams
After water absorbs（Content of sulfur dioxide 96%, water content 4% after testing）, it is molten with 350 grams of nitration mixture by the concentrated sulfuric acid and concentrated nitric acid preparation
Liquid（Prepared by 130 gram of 70% concentrated nitric acid and 220 gram of 96% concentrated sulfuric acid）Absorb, absorb temperature control between 15-20 DEG C, about need 1
Hour absorbs and finishes, and the content of permanganimetric method detection nitrosyl sulfuric acid is 39%, is detected without chlorion.
Embodiment 3：The determination of nitration mixture absorption technique
（1）Influence of the difference composition nitration mixture to absorbing：In the present embodiment, the absorption of hydrogen chloride is same as Example 1, then with 100
Gram water absorbs a small amount of hydrogen chloride of residual, is absorbed with 350 grams of mixed acid solutions prepared by the concentrated sulfuric acid and concentrated nitric acid afterwards, wherein mixing
During acid is constituted, concentrated nitric acid（By taking the concentrated nitric acid that mass concentration is 70% as an example）With the concentrated sulfuric acid（With the concentrated sulfuric acid that mass concentration is 96%
As a example by）According to mass ratio 1:0.5、1:0.8、1:1、1:1.2、1:1.3、1:1.4、1:1.5、1:1.6、1:1.7、1:1.8、1:2、
1:2.2, temperature control is absorbed at 15-25 DEG C, absorption is finished, and permanganimetric method detects the content of nitrosyl sulfuric acid.
Test result indicate that, concentrated nitric acid is more than 1 with concentrated sulfuric acid mass ratio:When 1.2, as nitric acid ratio increases, part is dense
Nitric acid is evaporate into tail gas, causes to contain micro nitrous acid in tail gas, is unfavorable for production；And work as concentrated nitric acid and concentrated sulfuric acid quality
Than less than 1:When 1.2, with the reduction of concentrated nitric acid and concentrated sulfuric acid mass ratio（That is concentrated sulfuric acid proportion increase）, nitrous in finished product
The content of acyl sulfate gradually increases, but domain of walker is in 22-25%；When concentrated nitric acid and concentrated sulfuric acid mass ratio continue to be decreased to 1:1.3
When, the content of nitrosyl sulfuric acid directly rises to 40% in finished product；Continue the ratio of the increase concentrated sulfuric acid, nitrosyl sulfuric acid content increases
Amplitude long is larger, especially when concentrated nitric acid and concentrated sulfuric acid mass ratio are adjusted to 1:During 1.5-1.7, increase most fast, but continue to increase
The ratio of the concentrated sulfuric acid, amplification is successively decreased and is tended towards stability, especially when concentrated nitric acid and concentrated sulfuric acid mass ratio are adjusted to 1:It is sub- after 1.8
The content of nitryl sulfuric acid does not increase anti-drop；Continue to adjust concentrated nitric acid and concentrated sulfuric acid mass ratio is adjusted to less than 1:1.8, nitrosyl sulfuric acid
Content reduction, be unfavorable for the treatment of tail gas.
Therefore, under the conditions of same treatment, concentrated nitric acid is controlled 1 with concentrated sulfuric acid mass ratio:During 1.3-1.8, nitrosyl sulfuric acid
Content can ensure more than 41%, especially when concentrated nitric acid and concentrated sulfuric acid mass ratio are controlled 1:During 1.5-1.7, nitrosyl sulphur
The content of acid increases most fast, and can reach 45% or so.
（2）The influence that different temperatures absorbs to nitration mixture：Temperature can influence the volatility of concentrated nitric acid, meanwhile, the concentrated sulfuric acid is anti-
Meeting heat release during answering, when temperature control is below 30 DEG C, can be very good to play the concentrated sulfuric acid, the oxidation of concentrated nitric acid,
And avoiding the too high concentrated nitric acid for causing of temperature from volatilizing, when temperature is too low, reactivity is inadequate, therefore by less than 10 DEG C, 10-30
DEG C, after the experiment of 30 DEG C of three above different phase temperature, test result indicate that：Effect is absorbed when temperature control is at 10-30 DEG C
Fruit is best, when temperature control is at 15-25 DEG C, absorption efficiency highest.
（3）Nitration mixture is constituted and the compound action for absorbing temperature：The absorption of hydrogen chloride above is same as Example 1, then uses
100 grams of water absorb a small amount of hydrogen chloride of residual, afterwards with 350 grams of mixed acid solutions prepared by the concentrated sulfuric acid and concentrated nitric acid（Respectively by
The concentrated sulfuric acid of 70% concentrated nitric acid 96% is according to mass ratio 1:1.3、1:1.4、1:1.5、1:1.6、1:1.7、1:1.8 prepare）Absorb, absorb
Temperature controls, at 10-15 DEG C, 15-20 DEG C, 20-25 DEG C, 20-25 DEG C, 25-30 DEG C, 10-20 DEG C, about to need absorbed within 1 hour respectively
Finish, permanganimetric method detects the content of nitrosyl sulfuric acid, content is respectively 41%, 42%, 45%, 45%, 40%, 41%, detection
Without chlorion.
Industrial useful pure sulfur dioxide prepares the technology of nitrosyl sulfuric acid, but purity to raw material sulfur dioxide will
Ask very high, generally more than 99%, and have strict demand to free sulfur content contained therein（Generally it is less than 0.1%, it is desirable to
Naked eyes can not observe free sulphur, and finished product needs to be controlled free sulfur content）.The application processes titanium dioxide in nitration mixture mode
The scheme of sulphur has satisfactorily resolved the sulfur dioxide in the mixed tail gas produced by thionyl chloride, has the characteristics that：A. to tail gas
In sulfur dioxide net content and total amount it is less demanding, the fluctuation of content of sulfur dioxide（The height of water content）With the fluctuation of total amount
It is little on product influence；B. the sulfur dioxide in tail gas absolutely not contains free sulphur, and this exactly original industry law cannot be solved
Technical barrier.
Claims (10)
1. a kind of reaction end gas method of comprehensive utilization, it is characterised in that：Absorbed including the first order, N roads intermediate absorption and nitration mixture are inhaled
Receive, the described first order is absorbed and absorbed with water or/and supplement absorbent, after tail gas absorbs through the first order, the liquid of generation
Material removes SO2（g）Form concentrated hydrochloric acid；Using water as absorbent, the recovered liquid of generation is returned intermediate absorption as supplement absorbent
Absorbed with to the first order；Without HCl（g）Tail gas deliver to the nitration mixture with oxidisability in absorbed, the SO in tail gas2（g）
Nitrosyl sulfuric acid is converted into, tail gas is then directly discharged.
2. a kind of reaction end gas method of comprehensive utilization as claimed in claim 1, it is characterised in that：Described N=1, it is now middle
Absorb and be second level absorption, the second level is absorbed using water as absorbent, and from the top input of second level absorption, the first order is inhaled
Tail gas after receipts treatment absorbs top discharge from the first order, and is sent into by the bottom that the second level absorbs, and after tail gas absorbs through water, produces
The raw dilute acid soln feeding first order is absorbed as supplement absorbent, the aqueous SO after second level absorption treatment2Tail gas is then direct
Absorbed in feeding nitration mixture.
3. a kind of reaction end gas method of comprehensive utilization as claimed in claim 1, it is characterised in that：Described N >=2, now in
Between absorb by the second level absorb, the third level absorb ... N grade absorption is constituted, the second level absorption, the third level absorption using water as
The top input water that absorbent, the wherein second level absorb, tail gas after first order absorption is processed absorbs top row from the first order
Go out, and the bottom feeding absorbed by the second level, after tail gas absorbs through water, the dilute acid soln feeding first order of generation is absorbed as benefit
Fill absorbent, aqueous, HCl SO after second level absorption treatment2Tail gas absorbs bottom and is input into through the third level；Absorbed from the third level and pushed up
Portion is input into water, and the tail gas during the third level is absorbed carries out the absorption of the 3rd road, and the diluted acid of generation is used as supplement absorbent etc., located
Aqueous, HClSO after reason2Tail gas feeding next stage absorbs, the like, the tail gas after N grades of absorption treatment is aqueous SO2Tail
Gas, is sent directly into nitration mixture and is absorbed.
4. a kind of reaction end gas method of comprehensive utilization as claimed in claim 1, it is characterised in that：The described first order absorbs
In, the SO of liquid material removing2（g）Partial removal HCl waste gas out is confused in the lump into carrying out SO in intermediate absorption2（g）Converge
Collection.
5. a kind of reaction end gas method of comprehensive utilization as described in claim any one of 1-4, it is characterised in that：Described nitration mixture
In absorption, nitration mixture is formed by concentrated nitric acid and concentrated sulfuric acid mixture, and concentrated nitric acid is 1.3-1.8 with the mixture mass ratio of the concentrated sulfuric acid:1, inhale
Shrinkage temperature is 10-30 DEG C.
6. a kind of reaction end gas method of comprehensive utilization as claimed in claim 5, it is characterised in that：Described concentrated nitric acid and dense sulphur
The mixture mass ratio of acid is 1.5-1.7:1, it is 15-25 DEG C to absorb temperature.
7. a kind of reaction end gas method of comprehensive utilization as described in claim any one of 1-4, it is characterised in that：Described nitration mixture
In, nitration mixture is formed by concentrated nitric acid and concentrated sulfuric acid mixture, and the mass concentration of concentrated nitric acid is 65-80%, and the mass concentration of the concentrated sulfuric acid is
70-98%。
8. a kind of reaction end gas method of comprehensive utilization as claimed in claim 7, it is characterised in that：Described concentrated nitric acid quality is dense
It is 70% to spend, and the mass concentration of the concentrated sulfuric acid is 96%.
9. a kind of reaction end gas method of comprehensive utilization as claimed in claim 8, it is characterised in that：In described treatment process,
During every mole of vent gas treatment, the initial absorption agent that the first order absorbs addition is 100g water, every grade of absorbent of intermediate absorption addition
It is 100g water.
10. a kind of reaction end gas method of comprehensive utilization as described in claim 1,8 or 9, it is characterised in that：Described nitration mixture foot
Amount or excessive consumption.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113019070A (en) * | 2021-03-02 | 2021-06-25 | 华侨大学 | Resource treatment method for sulfonated waste gas and nitrated waste gas generated in dye production |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101121094A (en) * | 2007-07-17 | 2008-02-13 | 高邮市有机化工厂 | Method for treating tail gas of thionyl chloride chlorination |
-
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101121094A (en) * | 2007-07-17 | 2008-02-13 | 高邮市有机化工厂 | Method for treating tail gas of thionyl chloride chlorination |
Non-Patent Citations (1)
| Title |
|---|
| 谭凤娇: "无盐亚硝酰硫酸合成工艺研究", 《湘潭师范学院学报（自然科学版）》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113019070A (en) * | 2021-03-02 | 2021-06-25 | 华侨大学 | Resource treatment method for sulfonated waste gas and nitrated waste gas generated in dye production |
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