CN102614746A - 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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- CN102614746A CN102614746A CN2012100828075A CN201210082807A CN102614746A CN 102614746 A CN102614746 A CN 102614746A CN 2012100828075 A CN2012100828075 A CN 2012100828075A CN 201210082807 A CN201210082807 A CN 201210082807A CN 102614746 A CN102614746 A CN 102614746A
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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 β-fluorine sultone treatment of waste gas method that contains.
Background technology
β-fluorine sultone is a kind of special fluorine-containing fine chemicals, because of 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 intermediates.In β-fluorine sultone production process; Inevitably there is fraction β-fluorine sultone gas to be present in the middle of the waste gas; If without administering directly discharging; Certainly will cause serious environmental to pollute, especially β-fluorine sultone gas works the mischief to the existence of surrounding environment plant, also can cause damage to human respiratory.Therefore, research β-removing of fluorine sultone waste gas is extremely important to health, ecological environment.
At present, remove the method that contains β-fluorine sultone waste gas and still do not have pertinent literature report both at home and abroad.Manufacturing enterprise adopts cryogenics that β-fluorine sultone gas is carried out condensation to remove usually in the middle of actual production process; But the chilled brine that these method needs are-15～-40 ℃ could be with β-fluorine sultone gas removal; The ice maker operating load is big, and loss is big, energy consumption is high.In addition, when the waste gas velocity ratio was big, all condensation contained β-fluorine sultone waste gas, and the on-condensible gas that exists in the middle of the waste gas also makes condensation effect undesirable, caused processing not thorough.
Summary of the invention
The present invention is directed to the weak point of prior art, provide a kind of simple and practical, energy consumption is low, processing contains β-fluorine sultone treatment of waste gas method completely.
Inscribe in order to solve between above-mentioned technology; The technical scheme that the present invention adopts is: the waste gas processing method in a kind of β-fluorine sultone production process; It is after 10%～30% metal fluoride solution and mass percentage concentration are 10%～50% alkaline hydrated oxide solution absorption, with the waste gas qualified discharge after handling that the waste gas that will contain β-fluorine sultone feeds mass percentage concentration successively with air speed 5～7m/s.
Further:
Metal fluoride solution of the present invention and alkaline hydrated oxide solution can be packed in the spray column, exist with the mode of spray liquid.
Metal fluoride of the present invention is KF, CaF
2, NaF, CsF, a kind of among the 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 that contains β-fluorine sultone, and metal fluoride and β-fluorine sultone gas reacts, and makes β-fluorine sultone gas convert FSO into
2ZCXCF
2OM (Z=F, Cl, H, CF
3X=F, H, CF
3M=K, Ca, Na, Cs, Ag), part β-fluorine sultone hydrolysis, the HF gas that reaction generates get in the alkaline hydrated oxide aqueous solution and absorb, thereby realize removing of β-fluorine sultone gas.Reaction equation is following:
(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 of the present invention is simple and practical, can thoroughly remove β-fluorine sultone gas, cuts down the consumption of energy, and non-secondary pollution, can avoid containing β-fluorine sultone waste gas ecological environment is on every side damaged, and society is very remarkable with economic benefit.
The specific embodiment
Below in conjunction with embodiment the present invention is done to describe in further detail, but the present invention not only is confined to following examples.
Embodiment 1:
With mass percentage concentration is that 20% the KF aqueous solution and mass percentage concentration are each 900L of the NaOH aqueous solution of 40%, is respectively charged into (V=3.5m in two spray columns
3Tower still: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
The waste gas of 400ppm sprays absorption through two spray columns successively with air speed 5m/s; In the spray absorption process, add the KF aqueous solution and the NaOH aqueous solution continuously; With the total amount of keeping spray liquid and change in concentration in 10%; With the waste gas qualified discharge after handling, detect, analyze in the waste gas outlet sampling, do not detect
Gas.
Embodiment 2:
With mass percentage concentration 10% CaF
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 still: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
The waste gas of 600ppm sprays absorption through two spray columns successively with air speed 7m/s, in the spray absorption process, adds CaF continuously
2The aqueous solution and the LiOH aqueous solution, with the waste gas qualified discharge after handling, detect, analyze in the waste gas outlet sampling in 10% with the total amount of keeping spray liquid and change in concentration, do not detect
Gas.
Embodiment 3:
With mass percentage concentration is that 30% the NaF aqueous solution and mass percentage concentration are each 900L of the NaOH aqueous solution of 10%, is respectively charged into (V=3.5m in two spray columns
3Tower still: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
The waste gas of 500ppm sprays absorption through two spray columns successively with air speed 6m/s; In the spray absorption process, add the NaF aqueous solution and the NaOH aqueous solution continuously; With the total amount of keeping spray liquid and change in concentration in 10%; With the waste gas qualified discharge after handling, detect, analyze in the waste gas outlet sampling, do not detect
Gas.
Embodiment 4:
With mass percentage concentration is that 30% the CsF aqueous solution and mass percentage concentration are each 900L of the KOH aqueous solution of 20%, is respectively charged into (V=3.5m in two spray columns
3Tower still: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
The waste gas of 400ppm sprays absorption through two spray columns successively with air speed 5m/s; In the spray absorption process, add the CsF aqueous solution and the KOH aqueous solution continuously; With the total amount of keeping spray liquid and change in concentration in 10%; With the waste gas qualified discharge after handling, detect, analyze in the waste gas outlet sampling, do not detect
Gas.
Embodiment 5:
With mass percentage concentration is that 20% the KF aqueous solution and mass percentage concentration are 30% Ca (OH)
2Each 900L of the aqueous solution is respectively charged into (V=3.5m in two spray columns
3Tower still: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
The waste gas of 400ppm sprays absorption through two spray columns successively with air speed 5m/s, in the spray absorption process, adds the KF aqueous solution and Ca (OH) continuously
2The aqueous solution, with the waste gas qualified discharge after handling, detects, analyzes in the waste gas outlet sampling in 10% with the total amount of keeping spray liquid and change in concentration, does not detect
Gas.
Embodiment 6:
With mass percentage concentration is that 30% the KF aqueous solution and mass percentage concentration are 10% Ba (OH)
2Each 900L of the aqueous solution is respectively charged into (V=3.5m in two spray columns
3Tower still: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
The waste gas of 500ppm sprays absorption through two spray columns successively with air speed 6m/s, in the spray absorption process, adds the KF aqueous solution and Ba (OH) continuously
2The aqueous solution, with the waste gas qualified discharge after handling, detects, analyzes in the waste gas outlet sampling in 10% with the total amount of keeping spray liquid and change in concentration, does not detect
Gas.
Embodiment 7:
With mass percentage concentration is that 20% the AgF aqueous solution and mass percentage concentration are each 900L of the KOH aqueous solution of 50%, is respectively charged into (V=3.5m in two spray columns
3Tower still: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
The waste gas of 600ppm sprays absorption through two spray columns successively with air speed 7m/s; In the spray absorption process, add the AgF aqueous solution and the KOH aqueous solution continuously; With the total amount of keeping spray liquid and change in concentration in 10%; With the waste gas qualified discharge after handling, detect, analyze in the waste gas outlet sampling, do not detect
Gas.
Embodiment 8:
With mass percentage concentration is that 10% the KF aqueous solution and mass percentage concentration are 30% Ca (OH)
2Each 900L of the aqueous solution is respectively charged into (V=3.5m in two spray columns
3Tower still: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
The waste gas of 400ppm sprays absorption through two spray columns successively with air speed 5m/s, in the spray absorption process, adds the KF aqueous solution and Ca (OH) continuously
2The aqueous solution, with the waste gas qualified discharge after handling, detects, analyzes in the waste gas outlet sampling in 10% with the total amount of keeping spray liquid and change in concentration, does not detect
Gas.
Embodiment 9:
With mass percentage concentration is that 30% the KF aqueous solution and mass percentage concentration are each 900L of the NaOH aqueous solution of 20%, is respectively charged into (V=3.5m in two spray columns
3Tower still: Φ 900 * 1500, tower body: Φ 900 * 5000) spray, will contain simultaneously
The waste gas of 400ppm sprays absorption through two spray columns successively with air speed 5m/s; In the spray absorption process, add the KF aqueous solution and the NaOH aqueous solution continuously; With the total amount of keeping spray liquid and change in concentration in 10%; With the waste gas qualified discharge after handling, detect, analyze in the waste gas outlet sampling, do not detect
Gas.
Claims (4)
1. the waste gas processing method in β-fluorine sultone production process; It is after 10%～30% metal fluoride solution and mass percentage concentration are 10%～50% alkaline hydrated oxide solution absorption, with the waste gas qualified discharge after handling that the waste gas that it is characterized in that containing β-fluorine sultone feeds mass percentage concentration successively with air speed 5～7m/s.
2. the waste gas processing method in a kind of β according to claim 1-fluorine sultone production process is characterized in that described metal fluoride solution and alkaline hydrated oxide solution are packed in the spray column, exists with the mode of spray liquid.
3. the waste gas processing method in a kind of β according to claim 1-fluorine sultone production process is characterized in that described metal fluoride is KF, CaF
2, NaF, CsF, a kind of among the AgF.
4. the waste gas processing method in a kind of β according to claim 1-fluorine sultone production process is characterized in that described alkaline hydrated oxide is NaOH, LiOH, KOH, Ca (OH)
2, Ba (OH)
2In a kind of.
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| Application Number | Priority Date | Filing Date | Title |
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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 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》", 31 January 1989 * |
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