CN107899403A - Chloroethene acylating acid method produces the tail gas sulphur dioxide sulfur method of chloracetyl chloride - Google Patents
Chloroethene acylating acid method produces the tail gas sulphur dioxide sulfur method of chloracetyl chloride Download PDFInfo
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- CN107899403A CN107899403A CN201711238613.9A CN201711238613A CN107899403A CN 107899403 A CN107899403 A CN 107899403A CN 201711238613 A CN201711238613 A CN 201711238613A CN 107899403 A CN107899403 A CN 107899403A
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- CN
- China
- Prior art keywords
- tail gas
- sulphur dioxide
- chloroethene
- hydrogen peroxide
- gas sulphur
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
-
- 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
- B01D53/50—Sulfur oxides
Abstract
The invention discloses a kind of tail gas sulphur dioxide sulfur method of chloroethene acylating acid method production chloracetyl chloride, sweetening process carries out after absorption by Hydrochloric Acid process, and the tail gas sulphur dioxide after absorption by Hydrochloric Acid enters desulfurizing tower, using hydrogen peroxide and oxygen synergistic oxidation sulfur dioxide.Desulfurization process is placed in the emptying link after absorption by Hydrochloric Acid by the present invention, is reduced desulfurization load, is reduced the reagent consumption in sweetening process.
Description
Technical field
The present invention relates to a kind of exhaust gas treating method, and in particular to chloroethene acylating acid method produces the tail gas dioxy of chloracetyl chloride
Change sulphur sulfur method.
Background technology
During chloroethene acylating acid production chloracetyl chloride, the tail gas of generation is mainly formed as hydrogen chloride and sulfur dioxide gas
Body, in theory, often produces 1 ton of chloracetyl chloride product, produces hydrogen chloride 323kg, produce sulfur dioxide 283kg.In the prior art,
Hydrogen chloride in tail gas is mainly recycled by absorption by Hydrochloric Acid process, and sulfur dioxide passes through oxidative absorption in aqueous, existing skill
In art, the oxidation in aqueous solution to sulfur dioxide uses Ozone, which needs powerful ozone generator, and investment is huge
Greatly, absorption by Hydrochloric Acid, desulfurization load are big again for elder generation's desulfurization when and handling tail gas in the prior art.
The content of the invention
To make up the deficiencies in the prior art, the present invention provides a kind of monoxone acyl of emptying desulfurizing and purifying after first absorption by Hydrochloric Acid
Change method produces the tail gas sulphur dioxide sulfur method of chloracetyl chloride, and desulfurization load is small, and cost is low.
The present invention is achieved through the following technical solutions：
A kind of tail gas sulphur dioxide sulfur method of chloroethene acylating acid method production chloracetyl chloride, it is characterized in that：Including with
Lower step：
（1）The sweetening process carries out after absorption by Hydrochloric Acid process；
（2）Tail gas sulphur dioxide after absorption by Hydrochloric Acid enters desulfurizing tower, using hydrogen peroxide and oxygen synergistic oxidation sulfur dioxide.
Preferably, step（2）The mole dosage ratio of middle hydrogen peroxide and oxygen is 1:1.
Further, preferably, step（2）Middle hydrogen peroxide use volume fraction for 27.5% hydrogen peroxide.
Further, preferably, desulfurizing tower absorbing liquid is according to 27.5% hydrogen peroxide：Water=1:5 prepare.
The beneficial effects of the invention are as follows：Desulfurization process is placed in the emptying link after absorption by Hydrochloric Acid by the present invention, is reduced de-
Sulphur analysis, reduces the reagent consumption in sweetening process, and cost is low, and energy consumption is small.
Brief description of the drawings
Attached drawing 1 is inventive desulfurization process schematic representation.
Embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, to help the skill of this area
Art personnel have more complete, accurate and deep understanding, protection scope of the present invention bag to inventive concept of the invention, technical solution
Include but be not limited to following embodiments, it is any to technical scheme on the premise of without departing from spirit and scope
Details and the modification made of form each fall within protection scope of the present invention.
The tail gas sulphur dioxide sulfur method of the chloroethene acylating acid method production chloracetyl chloride of the present embodiment, including following step
Suddenly：
（1）The sweetening process carries out after absorption by Hydrochloric Acid process；
（2）Tail gas sulphur dioxide after absorption by Hydrochloric Acid enters desulfurizing tower, double using hydrogen peroxide and oxygen synergistic oxidation sulfur dioxide
Oxygen water uses volume fraction, and for 27.5% hydrogen peroxide, the mole dosage ratio of hydrogen peroxide and oxygen is 1:1.
The present embodiment is on the basis of producing 60 tons of production capacities of chloracetyl chloride daily, the sweetening process such as attached drawing institute after absorption by Hydrochloric Acid process
Show：In the specific implementation, in advance according to 27.5% hydrogen peroxide in absorbing liquid circulating tank：Water=1:5（Volume ratio）Prepare absorbing liquid,
Absorbing liquid cumulative volume accounting 40%；Check simultaneously open the circulation pump, absorbing liquid is established stable liquid circulation；Check and open and follow
The chilled brine of ring cooler, 14-18 DEG C of control absorbing liquid temperature；The concentration accurately measured through flowmeter is 27.5% dioxygen
Water enters desulfurization column overhead, with from circulation fluid of the circulating tank through circulating pump, being uniformly distributed in tower top mixing, through liquid distribution trough
Downlink afterwards, with the water counter-current absorption in the sulfur dioxide and circulation fluid of bottom of towe, generates sulfurous acid.Sulfurous acid is with coming from tower top
Hydrogen peroxide and the oxygen adverse current that enters of bottom of towe metering, catalytic oxidation becomes sulfuric acid.
As hydrogen peroxide participates in oxidation reaction in absorbing liquid, hydrogen peroxide is proportionally added into from tower top, when liquid level in circulating tank
Reach 75% or so, stop adding hydrogen peroxide, continue to keep liquid circulation.Sampling detection, when hydrogen peroxide concentration drops in system
When≤0.5%, bypass discharging is opened.When liquid level drops to 10% in circulating tank, hydrogen peroxide and clear water are supplemented according to the above ratio, it is whole
The hydrogen peroxide charging rate of tower top is kept during a.
The present embodiment is to desulfurization process in the chloracetyl chloride vent gas treatment process of 90 tons of 60 tons of the daily output and the daily output in salt
Acid is contrasted before absorbing process with the processing after absorption by Hydrochloric Acid process, as a result as follows：
As it can be seen that desulfurization process carries out that the reagent consumption in sweetening process can be greatly reduced after absorption by Hydrochloric Acid process, reduce de-
Sulphur analysis.
Claims (4)
- A kind of 1. tail gas sulphur dioxide sulfur method of chloroethene acylating acid method production chloracetyl chloride, it is characterised in that：Including following Step：（1）The sweetening process carries out after absorption by Hydrochloric Acid process；（2）Tail gas sulphur dioxide after absorption by Hydrochloric Acid enters desulfurizing tower, using hydrogen peroxide and oxygen synergistic oxidation sulfur dioxide.
- 2. the tail gas sulphur dioxide sulfur method of chloroethene acylating acid method production chloracetyl chloride according to claim 1, it is special Sign is：Step（2）The mole dosage ratio of middle hydrogen peroxide and oxygen is 1:1.
- 3. the tail gas sulphur dioxide sulfur method of chloroethene acylating acid method production chloracetyl chloride according to claim 2, it is special Sign is：Step（2）Middle hydrogen peroxide use volume fraction for 27.5% hydrogen peroxide.
- 4. the tail gas sulphur dioxide sulfur method of chloroethene acylating acid method production chloracetyl chloride according to claim 3, it is special Sign is：Desulfurizing tower absorbing liquid is according to 27.5% hydrogen peroxide of volume ratio：Water=1:5 prepare.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711238613.9A CN107899403A (en) | 2017-11-30 | 2017-11-30 | Chloroethene acylating acid method produces the tail gas sulphur dioxide sulfur method of chloracetyl chloride |
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| CN201711238613.9A CN107899403A (en) | 2017-11-30 | 2017-11-30 | Chloroethene acylating acid method produces the tail gas sulphur dioxide sulfur method of chloracetyl chloride |
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| CN201711238613.9A Pending CN107899403A (en) | 2017-11-30 | 2017-11-30 | Chloroethene acylating acid method produces the tail gas sulphur dioxide sulfur method of chloracetyl chloride |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4874591A (en) * | 1987-07-29 | 1989-10-17 | Maschinenfabrik Andritz Actiengesellschaft | Process for the purification of waste gases containing hydrochloric acid and sulphur dioxide |
| CN101343038A (en) * | 2008-06-30 | 2009-01-14 | 常熟富士莱医药化工有限公司 | Recovery method for mix waste gas of hydrogen chloride and sulphur dioxide in lipoic acid preparation |
| CN102764572A (en) * | 2012-05-15 | 2012-11-07 | 山西三维丰海化工有限公司 | Novel method for absorbing tail gas from trichloro-acetic chloride production through chlorination process |
| CN103908870A (en) * | 2012-12-29 | 2014-07-09 | 天津市旗东化工厂 | Treatment method for acyl-chlorination reaction tail gas |
| CN104548898A (en) * | 2014-11-27 | 2015-04-29 | 南京澄天环境科学研究院有限公司 | Method and device for combining deep emission reduction of sulfur-containing tail gas |
| CN105692563A (en) * | 2016-01-27 | 2016-06-22 | 山东三维石化工程股份有限公司 | SWSR (Sunway Sulfur Recovery)-7 technology and SWSR-7 device |
| CN106219499A (en) * | 2016-07-15 | 2016-12-14 | 碧海舟（北京）节能环保装备有限公司 | Desulfurization and sulfur recovery technology |
| CN106823717A (en) * | 2017-01-23 | 2017-06-13 | 湖北蔚天环保科技有限公司 | A kind of coke oven flue gas comprehensive treatment system |
| CN206355802U (en) * | 2016-11-29 | 2017-07-28 | 临沂圣大环保工程有限公司 | A kind of hydrogen peroxide method flue gas desulfurization processing system |
| CN206676204U (en) * | 2017-04-27 | 2017-11-28 | 临沂圣大环保工程有限公司 | A kind of new sulfuric acid exhaust gas processing device using hydrogen peroxide desulfurization |
-
2017
- 2017-11-30 CN CN201711238613.9A patent/CN107899403A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4874591A (en) * | 1987-07-29 | 1989-10-17 | Maschinenfabrik Andritz Actiengesellschaft | Process for the purification of waste gases containing hydrochloric acid and sulphur dioxide |
| CN101343038A (en) * | 2008-06-30 | 2009-01-14 | 常熟富士莱医药化工有限公司 | Recovery method for mix waste gas of hydrogen chloride and sulphur dioxide in lipoic acid preparation |
| CN102764572A (en) * | 2012-05-15 | 2012-11-07 | 山西三维丰海化工有限公司 | Novel method for absorbing tail gas from trichloro-acetic chloride production through chlorination process |
| CN103908870A (en) * | 2012-12-29 | 2014-07-09 | 天津市旗东化工厂 | Treatment method for acyl-chlorination reaction tail gas |
| CN104548898A (en) * | 2014-11-27 | 2015-04-29 | 南京澄天环境科学研究院有限公司 | Method and device for combining deep emission reduction of sulfur-containing tail gas |
| CN105692563A (en) * | 2016-01-27 | 2016-06-22 | 山东三维石化工程股份有限公司 | SWSR (Sunway Sulfur Recovery)-7 technology and SWSR-7 device |
| CN106219499A (en) * | 2016-07-15 | 2016-12-14 | 碧海舟（北京）节能环保装备有限公司 | Desulfurization and sulfur recovery technology |
| CN206355802U (en) * | 2016-11-29 | 2017-07-28 | 临沂圣大环保工程有限公司 | A kind of hydrogen peroxide method flue gas desulfurization processing system |
| CN106823717A (en) * | 2017-01-23 | 2017-06-13 | 湖北蔚天环保科技有限公司 | A kind of coke oven flue gas comprehensive treatment system |
| CN206676204U (en) * | 2017-04-27 | 2017-11-28 | 临沂圣大环保工程有限公司 | A kind of new sulfuric acid exhaust gas processing device using hydrogen peroxide desulfurization |
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Application publication date: 20180413 |