CN101922717A - Method for burning organic silicon waste gas and recycling diluted hydrochloric acid - Google Patents
Method for burning organic silicon waste gas and recycling diluted hydrochloric acid Download PDFInfo
- Publication number
- CN101922717A CN101922717A CN2010102398937A CN201010239893A CN101922717A CN 101922717 A CN101922717 A CN 101922717A CN 2010102398937 A CN2010102398937 A CN 2010102398937A CN 201010239893 A CN201010239893 A CN 201010239893A CN 101922717 A CN101922717 A CN 101922717A
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- Prior art keywords
- hydrochloric acid
- dedusting
- diluted hydrochloric
- quench tower
- flue gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The invention discloses a method for burning organic silicon waste gas and recycling diluted hydrochloric acid. The recyclable diluted hydrochloric acid is obtained by the steps of burning at high temperature in an incinerator, recycling in a waste heat boiler, dedusting by a high-efficient deduster, cooling in a quench tower and absorbing in a falling film absorber, wherein the high-efficient deduster is a PCHD type high-efficient deduster manufactured by Tianci Dedusting Device Plant, Fujian. In the invention, a high-efficient deduster drying method is utilized for adsorption and dedusting and can be used for removing a great part of most silica granules and other impurities in gas; and then the quench tower is used for cooling smoke. The invention has good dedusting effect compared with the prior art adopting the steps of firstly cooling smoke by the quench tower, and then spraying and dedusting by utilizing a circular diluted hydrochloric acid wet method of a Venturi and a gas-liquid separator. The content of nanosilica granules in the recycled diluted hydrochloric acid granules is reduced to be lower than 10ppm, the reuse value of the recycled diluted hydrochloric acid is enhanced, and the application field of the high-efficient deduster is widened.
Description
Technical field
The present invention relates to organic silicon waste gas and handle, be specifically related to the method that a kind of burning organic silicon waste gas and watery hydrochloric acid reclaim.
Background technology
Organosilyl waste gas, waste liquid mainly comprise toxic organic compounds such as chloromethanes, methylchlorosilane monomer, must just can discharge through dedusting and recovery after burning disposal is carbon dioxide, silica and hydrogen chloride.At present the method that reclaims of burning organic silicon waste gas and watery hydrochloric acid be 1, the incinerator high temperature incineration: organosilyl waste gas high temperature (more than 1000 degree) in incinerator burned be flue gas, exhaust gas components comprises hydrogen chloride gas and nanometer grade silica particle etc.; 2, waste heat boiler reclaims: flue gas reclaims heat energy through waste heat boiler earlier, and the flue-gas temperature of coming out drops to about 250 ℃; 3, quench tower cooling: after the energy recovery,, need in quench tower, flue gas to be cooled to about 60 ℃ by the watery hydrochloric acid spray because the temperature of flue gas is still higher; 4, wet method spraying and dedusting: the flue gas that quench tower comes out is through circulation watery hydrochloric acid wet method spray, the dedusting of venturi and gas-liquid separator, and most of silica dioxide granule is separated with flue gas by aggregately stacked, and the small part hydrogen chloride gas is dissolved in the watery hydrochloric acid; 5, falling-film absorber absorbs: the flue gas after the dedusting is by falling-film absorber, further absorbs HCl in the flue gas by circulation watery hydrochloric acid, utilizes through this watery hydrochloric acid is recyclable again.Can reclaim in the organic silicon waste gas and obtain 20% (wt) watery hydrochloric acid, the temperature of flue gas is also reduced to about about 40 ℃, is the tail gas that is suitable for environmental protection standard that can discharge.But the nanometer grade silica granule content is higher in the watery hydrochloric acid that this method reclaims, and 1-5% (wt) is arranged approximately, so the watery hydrochloric acid recycle value is lower.
Summary of the invention
It is lower that problem to be solved by this invention provides in a kind of watery hydrochloric acid of recovery the nanometer grade silica granule content, the method that burning organic silicon waste gas that the watery hydrochloric acid recycle value is higher and watery hydrochloric acid reclaim.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: the method that a kind of burning organic silicon waste gas and watery hydrochloric acid reclaim, comprise the incinerator high temperature incineration, waste heat boiler reclaims, the quench tower cooling, the falling-film absorber absorption step, between waste heat boiler recovery and quench tower cooling step, be provided with the high-efficiency dust remover dust removal step, i.e. flue gas after waste heat boiler reclaims heat energy, earlier by high-efficiency dust remover dedusting 3-5 minute, allow the silica dioxide granule in the flue gas be adsorbed by dry method, separate with flue gas, flue gas enters quench tower cooling again, and described high-efficiency dust remover is the Fujian PCHD type high-efficiency dust remover that cleaner factory produces of being bestowed by heaven; This high-efficiency dust remover is generally used for dedusting in the chemical industry of lower temperature, but our creativeness is applied to 250 ℃ of left and right sides flue gas ash removals among the present invention, and is not only fine with the test dust removing effects of long period through many times, and this equipment also can tolerate this temperature.
Compared with prior art, the invention has the advantages that the method that a kind of burning organic silicon waste gas and watery hydrochloric acid reclaim, by incinerator high temperature incineration, waste heat boiler recovery, high-efficiency dust remover dedusting, quench tower cooling, falling-film absorber absorption step, obtain callable watery hydrochloric acid, wherein high-efficiency dust remover is the Fujian PCHD type high-efficiency dust remover that cleaner factory produces of being bestowed by heaven; Method of the present invention is to utilize high-efficiency dust remover dry method absorption dedusting earlier, can remove the impurity such as exhausted most silica dioxide granule in the flue gas, use the quench tower cooled flue gas again, this is than the first quench tower cooled flue gas of prior art, use circulation watery hydrochloric acid wet method spray, the dedusting of venturi and gas-liquid separator again, good dedusting effect, the nanometer grade silica granule content is reduced to below the 10ppm in the watery hydrochloric acid of recovery; Before the present invention, those skilled in the art only reclaims burning organic silicon waste gas and watery hydrochloric acid by prior art, the chemical industry dry method dust that also only PCHD type high-efficiency dust remover is used for lower temperature, have only the inventor to pass through research, analyze and test, creatively allow the flue gas of higher temperature utilize above-mentioned high-efficiency dust remover dry method absorption dedusting earlier, thereby reach preferable dust removing effects, heat energy is reclaimed in the quench tower cooling again, silicon oxide particle content is very low in the watery hydrochloric acid that reclaims, so not only promote the recycle value that reclaims watery hydrochloric acid, also widened the application of above-mentioned high-efficiency dust remover.
The specific embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment
The method that a kind of burning organic silicon waste gas and watery hydrochloric acid reclaim, it is flue gas that organosilyl waste gas high temperature (more than 1000 degree) in incinerator is burned, the flue gas that burns reclaims heat energy through waste heat boiler earlier, the flue-gas temperature of coming out drops to about 250 ℃, again about 250 ℃ flue gas is passed through high-efficiency dust remover, allow the silica dioxide granule in the flue gas adsorb through 3-5 minute dry method, the better dust removal effect of flue gas, impurity such as exhausted most silica dioxide granule separate with flue gas, live about 250 ℃ temperature through test of many times high-efficiency dust remover ability; Heat energy is reclaimed in the quench tower cooling then, circulation watery hydrochloric acid absorbs the HCl in the flue gas in the falling-film absorber, hydrogen chloride just is absorbed as recycling recovery watery hydrochloric acid by watery hydrochloric acid, the nanometer grade silica granule content that reclaims watery hydrochloric acid is below 10ppm, reclaiming the watery hydrochloric acid recycle value like this can be higher, prevent waste, reduced environmental pollution.
Claims (1)
1. the method that reclaims of burning organic silicon waste gas and watery hydrochloric acid, comprise the incinerator high temperature incineration, waste heat boiler reclaims, the quench tower cooling, the falling-film absorber absorption step, it is characterized in that between waste heat boiler recovery and quench tower cooling step, being provided with the high-efficiency dust remover dust removal step, i.e. flue gas after waste heat boiler reclaims heat energy, earlier by high-efficiency dust remover dedusting 3-5 minute, allow the silica dioxide granule in the flue gas be adsorbed by dry method, separate with flue gas, flue gas enters quench tower cooling again, and described high-efficiency dust remover is the Fujian PCHD type high-efficiency dust remover that cleaner factory produces of being bestowed by heaven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102398937A CN101922717A (en) | 2010-07-26 | 2010-07-26 | Method for burning organic silicon waste gas and recycling diluted hydrochloric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102398937A CN101922717A (en) | 2010-07-26 | 2010-07-26 | Method for burning organic silicon waste gas and recycling diluted hydrochloric acid |
Publications (1)
| Publication Number | Publication Date |
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| CN101922717A true CN101922717A (en) | 2010-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102398937A Pending CN101922717A (en) | 2010-07-26 | 2010-07-26 | Method for burning organic silicon waste gas and recycling diluted hydrochloric acid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410543A (en) * | 2011-03-18 | 2012-04-11 | 江苏宏图洁环保工程设备有限公司 | Incinerator special for organosilicon waste residue slurry |
| CN102992267A (en) * | 2011-09-10 | 2013-03-27 | 赤峰盛森硅业科技发展有限公司 | Process and equipment for recycling HCl in fumed silica production |
| CN104876224A (en) * | 2015-05-11 | 2015-09-02 | 山东博润工业技术股份有限公司 | Organosilicon waste recovery treatment device and treatment method thereof |
| CN106478384A (en) * | 2016-08-31 | 2017-03-08 | 河北诚信有限责任公司 | A kind of method that malonate produces the advanced treating coproduction ethers of tail gas |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201246751Y (en) * | 2008-04-29 | 2009-05-27 | 北京航天石化技术装备工程公司 | Waste liquid and waste gas containing chlorine non-pollution processing device |
| CN101634453A (en) * | 2009-08-31 | 2010-01-27 | 北京航天动力研究所 | Quenching process and quenching device of incineration smoke of waste liquid and waste gas containing chlorine |
| CN101694298A (en) * | 2009-11-03 | 2010-04-14 | 北京航天动力研究所 | Chlorine-and-silicon-contained waste liquid and gas pollution-free treating method and recycling system thereof |
-
2010
- 2010-07-26 CN CN2010102398937A patent/CN101922717A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201246751Y (en) * | 2008-04-29 | 2009-05-27 | 北京航天石化技术装备工程公司 | Waste liquid and waste gas containing chlorine non-pollution processing device |
| CN101634453A (en) * | 2009-08-31 | 2010-01-27 | 北京航天动力研究所 | Quenching process and quenching device of incineration smoke of waste liquid and waste gas containing chlorine |
| CN101694298A (en) * | 2009-11-03 | 2010-04-14 | 北京航天动力研究所 | Chlorine-and-silicon-contained waste liquid and gas pollution-free treating method and recycling system thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410543A (en) * | 2011-03-18 | 2012-04-11 | 江苏宏图洁环保工程设备有限公司 | Incinerator special for organosilicon waste residue slurry |
| CN102992267A (en) * | 2011-09-10 | 2013-03-27 | 赤峰盛森硅业科技发展有限公司 | Process and equipment for recycling HCl in fumed silica production |
| CN104876224A (en) * | 2015-05-11 | 2015-09-02 | 山东博润工业技术股份有限公司 | Organosilicon waste recovery treatment device and treatment method thereof |
| CN104876224B (en) * | 2015-05-11 | 2017-04-12 | 山东博润工业技术股份有限公司 | Organosilicon waste recovery treatment device and treatment method thereof |
| CN106478384A (en) * | 2016-08-31 | 2017-03-08 | 河北诚信有限责任公司 | A kind of method that malonate produces the advanced treating coproduction ethers of tail gas |
| CN106478384B (en) * | 2016-08-31 | 2019-03-12 | 河北诚信集团有限公司 | A kind of method of the advanced treating coproduction ethers of malonate production tail gas |
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Open date: 20101222 |