CN102614746B - Method for treating waste gas during production process of Beta- fluorine sultone - Google Patents
Method for treating waste gas during production process of Beta- fluorine sultone Download PDFInfo
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- CN102614746B CN102614746B CN201210082807.5A CN201210082807A CN102614746B CN 102614746 B CN102614746 B CN 102614746B CN 201210082807 A CN201210082807 A CN 201210082807A CN 102614746 B CN102614746 B CN 102614746B
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- waste gas
- fluorine
- sultone
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- aqueous solution
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Abstract
The invention discloses a method for treating waste gas during production process of Beta-fluorine sultone. The method comprises the step of feeding waste gas containing Beta-fluorine sultone in metal fluoride solution with the mass percentage concentration of 10% to 30% and alkali hydroxide solution with the mass percentage concentration of 10% to 50% in sequence at the airspeed of 5 to 7 m/s for absorption, and then discharging the treated waste gas reaching the standards. The method provided by the invention is simple and practical, can completely remove gas containing Beta-fluorine sultone, reduces energy consumption, causes no secondary pollution, can prevent waste gas containing Beta-fluorine sultone from destroying the surrounding ecological environment, and is very remarkable in social and economic benefits.
Description
Technical field
The present invention relates to the processing method of waste gas containing fluoride, particularly a kind of processing method containing β-fluorine sultone waste gas.
Background technology
β-fluorine sultone is a kind of special fluorine-containing fine chemicals, because it has special heterocycle structure, can react with various alkene, cycloalkane, nucleopilic reagent etc., and the fluorochemical of synthetic various structures, is a kind of important fluoro-containing intermediate.In β-fluorine sultone production process, inevitably there is fraction β-fluorine sultone gas to be present in the middle of waste gas, if without administering directly discharge, certainly will cause serious environmental pollution, especially β-fluorine sultone gas works the mischief to the existence of surrounding environment plant, to human respiratory, also can cause damage.Therefore, removing of research β-fluorine sultone waste gas is extremely important to health, ecological environment.
At present, the method removing containing β-fluorine sultone waste gas does not still have pertinent literature report both at home and abroad.In the middle of actual production process, manufacturing enterprise adopts cryogenics to carry out condensation to β-fluorine sultone gas to remove conventionally, but the chilled brine that the method needs are-15～-40 ℃ could be by β-fluorine sultone gas removal, ice maker operating load is large, and loss is large, energy consumption is high.In addition, when waste gas streams speed ratio is larger, all condensation is containing β-fluorine sultone waste gas, and the on-condensible gas existing in the middle of waste gas also makes condensation effect undesirable, causes processing not thorough.
Summary of the invention
The present invention is directed to the deficiencies in the prior art part, provide a kind of simple and practical, energy consumption is low, processing contains the processing method of β-fluorine sultone waste gas thoroughly.
In order to solve between above-mentioned technology, inscribe, the technical solution used in the present invention is: the waste gas processing method in a kind of β-fluorine sultone production process, by take containing the waste gas of β-fluorine sultone after air speed 5～7m/s passes into successively alkaline hydrated oxide solution that metal fluoride solution that mass percentage concentration is 10%～30% and mass percentage concentration are 10%～50% and absorb, by the waste gas qualified discharge after processing.
Further:
Metal fluoride solution of the present invention and alkaline hydrated oxide solution can pack in spray column, in the mode of spray liquid, exist.
Metal fluoride of the present invention is KF, CaF
2, NaF, CsF, a kind of in AgF.
Alkaline hydrated oxide of the present invention is NaOH, LiOH, KOH, Ca (OH)
2, Ba (OH)
2in a kind of.
The present invention adopts the metal fluoride aqueous solution to absorb the waste gas containing β-fluorine sultone, and metal fluoride and β-fluorine sultone gas react, and make β-fluorine sultone gas be converted to FSO
2zCXCF
2oM (Z=F, Cl, H, CF
3; X=F, H, CF
3; M=K, Ca, Na, Cs, Ag), the hydrolysis of part β-fluorine sultone, the HF gas that reaction generates enters in the alkaline hydrated oxide aqueous solution and absorbs, thereby realizes removing of β-fluorine sultone gas.Reaction equation is as follows:
(Z＝F，Cl，H，CF
3；X＝F，H，CF
3；M＝K，Ca，Na，Cs，Ag)
(Z＝F，Cl，H，CF
3；X＝F，H，CF
3)
HF+Y(OH)
x→YF+H
2O
(Y＝Na，Li，K，Ca，Ba)
Method simple practical of the present invention, can thoroughly remove β-fluorine sultone gas, reduces energy consumption, and non-secondary pollution, can avoid containing β-fluorine sultone waste gas, ecological environment around being damaged, and society and economic benefit are very remarkable.
The specific embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but the present invention is not only confined to following examples.
Embodiment 1:
Each 900L of the NaOH aqueous solution that the KF aqueous solution that is 20% by mass percentage concentration and mass percentage concentration are 40%, is respectively charged into (V=3.5m in two spray columns
3tower reactor: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
the waste gas of 400ppm carries out spray-absorption by two spray columns successively with air speed 5m/s, in spray-absorption process, add continuously the KF aqueous solution and the NaOH aqueous solution, to maintain the total amount of spray liquid and change in concentration in 10%, by the waste gas qualified discharge after processing, in waste gas outlet sampling, detect, analyze, do not detect
gas.
Embodiment 2:
The CaF that is 10% by mass percentage concentration
2the aqueous solution and mass percentage concentration are each 900L of the LiOH aqueous solution of 50%, are respectively charged into (V=3.5m in two spray columns
3tower reactor: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
the waste gas of 600ppm carries out spray-absorption by two spray columns successively with air speed 7m/s, adds continuously CaF in spray-absorption process
2the aqueous solution and the LiOH aqueous solution, to maintain the total amount of spray liquid and change in concentration in 10%, by the waste gas qualified discharge after processing, detect, analyze in waste gas outlet sampling, do not detect
gas.
Embodiment 3:
Each 900L of the NaOH aqueous solution that the NaF aqueous solution that is 30% by mass percentage concentration and mass percentage concentration are 10%, is respectively charged into (V=3.5m in two spray columns
3tower reactor: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
the waste gas of 500ppm carries out spray-absorption by two spray columns successively with air speed 6m/s, in spray-absorption process, add continuously the NaF aqueous solution and the NaOH aqueous solution, to maintain the total amount of spray liquid and change in concentration in 10%, by the waste gas qualified discharge after processing, in waste gas outlet sampling, detect, analyze, do not detect
gas.
Embodiment 4:
Each 900L of the KOH aqueous solution that the CsF aqueous solution that is 30% by mass percentage concentration and mass percentage concentration are 20%, is respectively charged into (V=3.5m in two spray columns
3tower reactor: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
the waste gas of 400ppm carries out spray-absorption by two spray columns successively with air speed 5m/s, in spray-absorption process, add continuously the CsF aqueous solution and the KOH aqueous solution, to maintain the total amount of spray liquid and change in concentration in 10%, by the waste gas qualified discharge after processing, in waste gas outlet sampling, detect, analyze, do not detect
gas.
Embodiment 5:
The Ca (OH) that the KF aqueous solution that is 20% by mass percentage concentration and mass percentage concentration are 30%
2each 900L of the aqueous solution, is respectively charged into (V=3.5m in two spray columns
3tower reactor: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
the waste gas of 400ppm carries out spray-absorption by two spray columns successively with air speed 5m/s, adds continuously the KF aqueous solution and Ca (OH) in spray-absorption process
2the aqueous solution, to maintain the total amount of spray liquid and change in concentration in 10%, by the waste gas qualified discharge after processing, detects, analyzes in waste gas outlet sampling, does not detect
gas.
Embodiment 6:
The Ba (OH) that the KF aqueous solution that is 30% by mass percentage concentration and mass percentage concentration are 10%
2each 900L of the aqueous solution, is respectively charged into (V=3.5m in two spray columns
3tower reactor: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
the waste gas of 500ppm carries out spray-absorption by two spray columns successively with air speed 6m/s, adds continuously the KF aqueous solution and Ba (OH) in spray-absorption process
2the aqueous solution, to maintain the total amount of spray liquid and change in concentration in 10%, by the waste gas qualified discharge after processing, detects, analyzes in waste gas outlet sampling, does not detect
gas.
Embodiment 7:
Each 900L of the KOH aqueous solution that the AgF aqueous solution that is 20% by mass percentage concentration and mass percentage concentration are 50%, is respectively charged into (V=3.5m in two spray columns
3tower reactor: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
the waste gas of 600ppm carries out spray-absorption by two spray columns successively with air speed 7m/s, in spray-absorption process, add continuously the AgF aqueous solution and the KOH aqueous solution, to maintain the total amount of spray liquid and change in concentration in 10%, by the waste gas qualified discharge after processing, in waste gas outlet sampling, detect, analyze, do not detect
gas.
Embodiment 8:
The Ca (OH) that the KF aqueous solution that is 10% by mass percentage concentration and mass percentage concentration are 30%
2each 900L of the aqueous solution, is respectively charged into (V=3.5m in two spray columns
3tower reactor: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
the waste gas of 400ppm carries out spray-absorption by two spray columns successively with air speed 5m/s, adds continuously the KF aqueous solution and Ca (OH) in spray-absorption process
2the aqueous solution, to maintain the total amount of spray liquid and change in concentration in 10%, by the waste gas qualified discharge after processing, detects, analyzes in waste gas outlet sampling, does not detect
gas.
Embodiment 9:
Each 900L of the NaOH aqueous solution that the KF aqueous solution that is 30% by mass percentage concentration and mass percentage concentration are 20%, is respectively charged into (V=3.5m in two spray columns
3tower reactor: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
the waste gas of 400ppm carries out spray-absorption by two spray columns successively with air speed 5m/s, in spray-absorption process, add continuously the KF aqueous solution and the NaOH aqueous solution, to maintain the total amount of spray liquid and change in concentration in 10%, by the waste gas qualified discharge after processing, in waste gas outlet sampling, detect, analyze, do not detect
gas.
Claims (2)
1. the waste gas processing method in β-fluorine sultone production process, it is characterized in that containing the waste gas of β-fluorine sultone, take after air speed 5～7m/s passes into successively alkaline hydrated oxide solution that metal fluoride solution that mass percentage concentration is 10%～30% and mass percentage concentration are 10%～50% and absorb, by the waste gas qualified discharge after processing, described metal fluoride is KF, CaF
2, NaF, CsF, a kind of in AgF, described alkaline hydrated oxide is NaOH, LiOH, KOH, Ca(OH)
2, Ba(OH)
2in a kind of.
2. the waste gas processing method in a kind of β-fluorine sultone production process according to claim 1, is characterized in that described metal fluoride solution and alkaline hydrated oxide solution to pack in spray column, in the mode of spray liquid, exists.
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| CN201210082807.5A CN102614746B (en) | 2012-03-27 | 2012-03-27 | Method for treating waste gas during production process of Beta- fluorine sultone |
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|---|---|---|---|
| CN201210082807.5A CN102614746B (en) | 2012-03-27 | 2012-03-27 | Method for treating waste gas during production process of Beta- fluorine sultone |
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| CN102614746B true CN102614746B (en) | 2014-11-05 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5170725A (en) * | 1991-04-17 | 1992-12-15 | Smg Sommer Metallwerke Gmbh | Method and system of pyroprocessing waste products, particularly scrap metal, adulterated by organic components |
| CN101648104A (en) * | 2008-08-13 | 2010-02-17 | 北京格瑞华阳科技发展有限公司 | Technology for reclaiming hydrogen chloride tail gas in chemical production |
| CN101712639A (en) * | 2009-11-13 | 2010-05-26 | 山东东岳神舟新材料有限公司 | Method for preparing functional fluorine-bearing monomer by vertical-tube type catalytic reaction |
-
2012
- 2012-03-27 CN CN201210082807.5A patent/CN102614746B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5170725A (en) * | 1991-04-17 | 1992-12-15 | Smg Sommer Metallwerke Gmbh | Method and system of pyroprocessing waste products, particularly scrap metal, adulterated by organic components |
| CN101648104A (en) * | 2008-08-13 | 2010-02-17 | 北京格瑞华阳科技发展有限公司 | Technology for reclaiming hydrogen chloride tail gas in chemical production |
| CN101712639A (en) * | 2009-11-13 | 2010-05-26 | 山东东岳神舟新材料有限公司 | Method for preparing functional fluorine-bearing monomer by vertical-tube type catalytic reaction |
Non-Patent Citations (1)
| Title |
|---|
| 童志权，陈焕钦.工业废气污染控制与利用.《工业废气污染控制与利用》.1989,第612页. * |
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