CN108310914A - The purification method of methylsufonyl chloride tail gas - Google Patents
The purification method of methylsufonyl chloride tail gas Download PDFInfo
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- CN108310914A CN108310914A CN201710034075.5A CN201710034075A CN108310914A CN 108310914 A CN108310914 A CN 108310914A CN 201710034075 A CN201710034075 A CN 201710034075A CN 108310914 A CN108310914 A CN 108310914A
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- Prior art keywords
- tail gas
- absorption plant
- hydrogen peroxide
- chloride tail
- purification method
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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
- B01D53/1493—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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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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
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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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
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/106—Peroxides
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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
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The present invention relates to a kind of purification methods of methylsufonyl chloride tail gas, including following operation：Hydrogen chloride tail gas containing dimethyl disulfide is absorbed by first order absorption plant, it is absorbed by second level absorption plant in tail gas after absorption, absorbent solution is added in the first order absorption plant and the second level absorption plant, the absorbent solution is the concentrated hydrochloric acid solution containing hydrogen peroxide, a concentration of 2% the 10% of hydrogen peroxide；Wherein, the first order absorption plant and the second level absorption plant are single-stage packed tower either multistage packed tower or film-falling absorption tower.The purification method of methylsufonyl chloride tail gas provided by the invention can effectively reduce production cost, reduce environmental pollution.
Description
Technical field
The present invention relates to a kind of purification methods of methylsufonyl chloride tail gas, belong to chemical field.
Background technology
Currently, methylsufonyl chloride production method mainly carries out wet method oxychloride in water using dimethyl disulfide and chlorine
Technique.This method will produce hydrogen chloride.It is volatile due to dimethyl disulfide low boiling point, hydrogen chloride escaped from reaction system when
It waits, it can entrainment portions dimethyl disulfide.
Common processing method, or use and be passed through chlorine in tail gas.But the amount of chlorine is difficult control, it is easy to be made
Chlorine is excessive, causes chlorine excess in by-product hydrochloric acid, influences by-product hydrochloric acid quality, while also resulting in environmental pollution and being produced into
This increase.
Or by washing vapour, with the organic solvent of dimethyl disulfide can be dissolved by the dimethyl disulfide in hydrogen chloride tail gas
Melt separating treatment.But part dimethyl disulfide can only be reduced by washing vapour, it is difficult to thoroughly remove the dimethyl disulfide in hydrochloric acid,
To make by-product hydrochloric acid carry certain stink.Meanwhile organic solvent can be also entrained in hydrochloric acid, bring the dirt of bigger
Dye.
It is therefore desirable to design a kind of purification method of methylsufonyl chloride tail gas, to overcome the above problem.
Invention content
It is an object of the invention to overcome the defect of the prior art, production cost can be reduced, reduce pollution by providing one kind
Methylsufonyl chloride tail gas purification method.
The invention is realized in this way：
The present invention provides a kind of purification method of methylsufonyl chloride tail gas, including following operation：
Hydrogen chloride tail gas containing dimethyl disulfide is absorbed by first order absorption plant, is passed through in the tail gas after absorption
Second level absorption plant is absorbed, and it is molten that absorption is added in the first order absorption plant and the second level absorption plant
Liquid, the absorbent solution are the concentrated hydrochloric acid solution containing hydrogen peroxide, a concentration of 2%-10% of hydrogen peroxide；
Wherein, the first order absorption plant and the second level absorption plant be single-stage packed tower either multistage packed tower or
Film-falling absorption tower.
Further, in the concentrated hydrochloric acid solution containing hydrogen peroxide, a concentration of 4%-6% of hydrogen peroxide.
Further, in the concentrated hydrochloric acid solution containing hydrogen peroxide, a concentration of the 5% of hydrogen peroxide.
Further, the temperature of solution remains 80- in the first order absorption plant and the second level absorption plant
90℃。
The invention has the advantages that：
The present invention uses hydrogen peroxide absorbing hydrogen chloride tail gas, by the strong oxidizing property of hydrogen peroxide by the dimethyl in hydrogen chloride tail gas
Two sulphur are oxidized to pyrovinic acid, at the hydrogen peroxide oxidation in the first order absorption plant and the second level absorption plant
Dimethyl disulfide is free of in hydrogen chloride after reason, is absorbed as the hydrochloric acid without dimethyl disulfide using hydrochloric acid water, is obtained in this way
By-product hydrochloric acid purity it is high, be destitute of smell.The present invention uses hydrogen peroxide oxidation dimethyl disulfide, does not increase any organic solvent
It uses and discharges, it is more environmentally friendly；Hydrogen peroxide ultimately becomes water and oxygen, will not bring adverse effect to the production of by-product hydrochloric acid；
Dimethyl disulfide in hydrogen chloride becomes pyrovinic acid or intermediary reduction product after hydrogen peroxide oxidation, pyrovinic acid or
Person's intermediary reduction product can be reduced energy consumption, can reduce cost by being distilled to recover utilization after continuing oxidation；After treatment
Hydrogen chloride can be absorbed as pure hydrochloric acid, to be effectively reduced environmental pollution.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
All other embodiment that technical staff is obtained without making creative work belongs to what the present invention protected
Range.
The embodiment of the present invention provides a kind of purification method of methylsufonyl chloride tail gas, including following operation：
Hydrogen chloride tail gas containing dimethyl disulfide is absorbed by first order absorption plant, is passed through in the tail gas after absorption
Second level absorption plant is absorbed.Wherein, the first order absorption plant and the second level absorption plant are single-stage filler
Tower either multistage packed tower or film-falling absorption tower.Initial absorption is carried out by the first order absorption plant, without inhaling completely
The tail gas of receipts then enters second level absorption plant and is thoroughly absorbed so that is finally discharged without any pollutant, effectively subtracts
Environmental pollution is lacked.
Absorbent solution is added in the first order absorption plant and the second level absorption plant, using absorbent solution
To recycle washing or absorbing hydrogen chloride tail gas.The absorbent solution is the concentrated hydrochloric acid solution containing hydrogen peroxide, hydrogen peroxide
A concentration of 2%-10%.It is in order to reduce water absorbing hydrogen chloride heat release, in other implementations using the concentrated hydrochloric acid solution containing hydrogen peroxide
In example, hydrogen peroxide can also be only used, but needs to provide temperature control device to keep the temperature of absorbent solution to be in best suction
Receive range.
In order to prevent chloration hydro-oxidation is chlorine by hydrogen peroxide, and the concentration of hydrogen peroxide is no more than 10%, but hydrogen peroxide
When content is too low, and reduce its oxidisability, cannot thorough oxidation chlorination hydrogen dimethyl disulfide.It is more by many experiments
Secondary test learns that the optimum concentration range that hydrogen peroxide uses is 2%-10%.
Further, in the concentrated hydrochloric acid solution containing hydrogen peroxide, a concentration of 4%-6% of hydrogen peroxide.In this best implementation
In example, in the concentrated hydrochloric acid solution containing hydrogen peroxide, a concentration of the 5% of hydrogen peroxide, assimilation effect is best.
In the preferred embodiment, the temperature of solution is protected in the first order absorption plant and the second level absorption plant
Hold is 80-90 DEG C so that the assimilation effect of hydrogen peroxide is in optimum state.
Wherein, the principle of hydrogen peroxide absorption dimethyl disulfide is as follows：
CH3SSCH3+5H2O2=2CH3SO2 H+4 H2O。
By the common absorption of first order absorption plant and second level absorption plant, can contain in exhaustive oxidation hydrogen chloride
Dimethyl disulfide obtains pyrovinic acid.Any organic impurities is not contained in hydrogen chloride after such oxidation processes, it is available
The prior art is absorbed, and pure hydrochloric acid is obtained.
The present invention uses hydrogen peroxide absorbing hydrogen chloride tail gas, by the strong oxidizing property of hydrogen peroxide by two in hydrogen chloride tail gas
Two sulphur of methyl is oxidized to pyrovinic acid, by the dioxygen water oxygen in the first order absorption plant and the second level absorption plant
Change and be free of dimethyl disulfide in treated hydrogen chloride, is absorbed as the hydrochloric acid without dimethyl disulfide using hydrochloric acid water, in this way
Obtained by-product hydrochloric acid purity is high, is destitute of smell.
The invention has the advantages that：
The present invention uses hydrogen peroxide oxidation dimethyl disulfide, does not increase using and discharging for any organic solvent, more environmentally friendly.
Hydrogen peroxide ultimately becomes water and oxygen, will not bring adverse effect to the production of by-product hydrochloric acid.
Dimethyl disulfide in hydrogen chloride becomes pyrovinic acid or intermediary reduction product, first after hydrogen peroxide oxidation
Base sulfonic acid or intermediary reduction product can be reduced energy consumption, can reduce cost by being distilled to recover utilization after continuing oxidation.
Hydrogen chloride after treatment can be absorbed as pure hydrochloric acid, to be effectively reduced environmental pollution.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (4)
1. a kind of purification method of methylsufonyl chloride tail gas, which is characterized in that including following operation：
Hydrogen chloride tail gas containing dimethyl disulfide is absorbed by first order absorption plant, is passed through in the tail gas after absorption
Second level absorption plant is absorbed, and it is molten that absorption is added in the first order absorption plant and the second level absorption plant
Liquid, the absorbent solution are the concentrated hydrochloric acid solution containing hydrogen peroxide, a concentration of 2%-10% of hydrogen peroxide；
Wherein, the first order absorption plant and the second level absorption plant be single-stage packed tower either multistage packed tower or
Film-falling absorption tower.
2. the purification method of methylsufonyl chloride tail gas as described in claim 1, it is characterised in that：In the dense salt containing hydrogen peroxide
In acid solution, a concentration of 4%-6% of hydrogen peroxide.
3. the purification method of methylsufonyl chloride tail gas as claimed in claim 1 or 2, it is characterised in that：Containing hydrogen peroxide
In concentrated hydrochloric acid solution, a concentration of the 5% of hydrogen peroxide.
4. the purification method of methylsufonyl chloride tail gas as claimed in claim 1 or 2, it is characterised in that：The first order absorbs
The temperature of solution remains 80-90 DEG C in device and the second level absorption plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710034075.5A CN108310914A (en) | 2017-01-18 | 2017-01-18 | The purification method of methylsufonyl chloride tail gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710034075.5A CN108310914A (en) | 2017-01-18 | 2017-01-18 | The purification method of methylsufonyl chloride tail gas |
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| Publication Number | Publication Date |
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| CN108310914A true CN108310914A (en) | 2018-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710034075.5A Pending CN108310914A (en) | 2017-01-18 | 2017-01-18 | The purification method of methylsufonyl chloride tail gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109453615A (en) * | 2018-12-19 | 2019-03-12 | 湖北星火化工有限公司 | A kind of processing method of methylsufonyl chloride production tail gas |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1218040A (en) * | 1997-10-04 | 1999-06-02 | 格里罗工厂股份公司 | Process for preparation of methanesulfonic acid |
| DE69800560D1 (en) * | 1997-07-31 | 2001-04-12 | Atofina | Purification of hydrochloric acid, by-product of methanesulfonic acid production |
| CN1465564A (en) * | 2002-07-04 | 2004-01-07 | 河北亚诺化工有限公司 | Interrupter method for producing high-purity methyl sulfonyl chloride |
| CN101538480A (en) * | 2009-05-12 | 2009-09-23 | 大连理工大学 | Method for removing dimethyl disulfide through oxidation |
| CN101863803A (en) * | 2010-06-10 | 2010-10-20 | 湖北星火化工有限公司 | Purification method of byproduct hydrochloric acid |
| CN103641748A (en) * | 2013-11-29 | 2014-03-19 | 湖北星火化工有限公司 | Method for preparing methanesulfonic acid by recycling byproduct, namely hydrochloric acid |
-
2017
- 2017-01-18 CN CN201710034075.5A patent/CN108310914A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69800560D1 (en) * | 1997-07-31 | 2001-04-12 | Atofina | Purification of hydrochloric acid, by-product of methanesulfonic acid production |
| CN1218040A (en) * | 1997-10-04 | 1999-06-02 | 格里罗工厂股份公司 | Process for preparation of methanesulfonic acid |
| CN1465564A (en) * | 2002-07-04 | 2004-01-07 | 河北亚诺化工有限公司 | Interrupter method for producing high-purity methyl sulfonyl chloride |
| CN101538480A (en) * | 2009-05-12 | 2009-09-23 | 大连理工大学 | Method for removing dimethyl disulfide through oxidation |
| CN101863803A (en) * | 2010-06-10 | 2010-10-20 | 湖北星火化工有限公司 | Purification method of byproduct hydrochloric acid |
| CN103641748A (en) * | 2013-11-29 | 2014-03-19 | 湖北星火化工有限公司 | Method for preparing methanesulfonic acid by recycling byproduct, namely hydrochloric acid |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109453615A (en) * | 2018-12-19 | 2019-03-12 | 湖北星火化工有限公司 | A kind of processing method of methylsufonyl chloride production tail gas |
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Application publication date: 20180724 |