CN102491281A - Device and process applied to hydrogen peroxide extraction - Google Patents
Device and process applied to hydrogen peroxide extraction Download PDFInfo
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- CN102491281A CN102491281A CN2011104079305A CN201110407930A CN102491281A CN 102491281 A CN102491281 A CN 102491281A CN 2011104079305 A CN2011104079305 A CN 2011104079305A CN 201110407930 A CN201110407930 A CN 201110407930A CN 102491281 A CN102491281 A CN 102491281A
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Abstract
The invention provides a device and process applied to hydrogen peroxide extraction. The device comprises a stock solution tank, a separating tank, a liquid distributor, a rectifier, a liquid drop multiplication fiber filler assembly, a special plate group separating assembly and an anti-vortex baffle plate assembly, wherein the liquid drop multiplication fiber filler assembly and the special plate group separating assembly are arranged in the separating tank; the separating tank is provided with a small dispersed phase discharge barrel for stabilizing a two-phase interface and preventing discharging inclusion of a dispersed phase; and the anti-vortex baffle plate assembly is arranged in the separating tank and is used for preventing discharging vortex, stabilizing flow field in the separating tank and enhancing a separating effect. The separating equipment can reach dozens of ppm in maximum. Due to the adoption of a rare product phase separator, separating time is shortened, equipment size is reduced, and the load of subsequent air blow-off aromatic hydrocarbon and the emission of aromatic hydrocarbon can be lowered.
Description
Technical field
The present invention relates to the device and the technological process of extraction workshop section in the ydrogen peroxide 50 production process.
Background technology
Widely-used anthraquinone technology during ydrogen peroxide 50 is produced at present, this technology are comparatively ripe, and have realized large-scale industrial production.Anthraquinone technology mainly comprises hydrogenation workshop section, oxidation section and extracting and purifying workshop section.Wherein the flow process of extracting and purifying workshop section is: the effusive raffinate of extraction cat head, divide except that after the portion water that possibly carry secretly through extraction raffinate separator, and get into the drying tower bottom then.Solution of potassium carbonate is housed in the drying tower, with remove part moisture content, in and the remaining hydrogen peroxide of acids and decomposition.Effusive working fluid gets into the alkali lye separator from the drying tower top, tells the solution of potassium carbonate drop that possibly carry secretly.Effusive extraction liquid at the bottom of the extraction tower is removed the little work liquid in the rare article of ydrogen peroxide 50 through behind the aromatic hydrocarbons extraction, gets into rare article separator, removes the aromatic hydrocarbons in the ydrogen peroxide 50, gets into rare article storage tank.
Ydrogen peroxide 50 residual has following harm in the raffinate: extract remainder is high more in the working fluid, and the ydrogen peroxide 50 loss is high more, and the extraction yield is just low more; The raffinate that exceeds standard gets into washing tower (for removing CO2), makes that alkali lye is not easily separated and brings the carclazyte bed into, increases the aftertreatment burden; Extract remainder is high, will make ydrogen peroxide 50 get into washing tower (for removing CO2), increases the weight of the washing tower (for removing CO2) load; Reduced the concentrated base life cycle; Make the salt of wormwood consumption increase, ydrogen peroxide 50 increases activated alumina consumption again, in working fluid, makes poisoning of catalyst behind alkali and the water entering hydrogenation tower; Increase catalyst consumption, these all make production cost increase.The residual load that causes follow-up air stripping aromatic hydrocarbons of working fluid increases and the increase of aromatic hydrocarbons quantity discharged in the extraction liquid.
The extraction separator and the rare article separator equipment size that use at present are bigger, and the sedimentation residence time is long; Must under 50-60 ℃, carry out because of raffinate separates again, settling process needs insulation; The precipitation apparatus that uses at present is lower at separation accuracy.
Summary of the invention
Problem to be solved by this invention is: a kind of device and technology that is applied to the ydrogen peroxide 50 extraction is provided to existing apparatus and the existing defective of technology, and the contour size of the unit(s) of solution prior art is big, the problem that separating effect is not good enough, production cost is high.
Technical problem to be solved by this invention is able to solve through following technical scheme:
A kind of device that is applied to the ydrogen peroxide 50 extraction; It is characterized in that: comprise original fluid container and connected separating tank; One feed distributor is set in the separating tank; Drop multiplication fibrous packing assembly is set in the separating tank and separates specific panel group formula separation assembly, described separating tank is provided with stable two-phase interface, prevents that the disperse phase that the disperse phase discharging is carried secretly from discharging little cylindrical shell, the whirlpool baffle plate of setting up defences in the said separating tank; After raw material gets into original fluid container, get into separating tank, through drop multiplication fibrous packing assembly, carry out drop multiplication sepn process through the complex method of specific panel group formula phase separator assembly again with earlier through feed distributor.
Described a kind of device and technology that is applied to the ydrogen peroxide 50 extraction; It is characterized in that: offer material inlet on the described original fluid container; The original fluid container bottom offers the original fluid container sewage draining exit; The top of separating tank offers light phase export, the TM mouth of pipe, the SV mouth of pipe, and the little cylindrical shell of separating tank bottom offers separating tank sewage draining exit, heavy out.
Described original fluid container is provided with liquid distributor.
Be provided with drop multiplication fibrous packing assembly in the described separating tank.
Be provided with specific panel group formula separation assembly in the described separating tank.
Described separating tank light phase export portion is provided with anti-whirlpool baffle plate.
Described separating tank is provided with the liquidometer mouth.
A kind of technology that is applied to the ydrogen peroxide 50 extraction, its characteristic may further comprise the steps:
A: hydrogen peroxide oxidation liquid gets into extraction tower at the bottom of the extraction Tata, and purified water gets into extraction tower from the extraction tower cat head and extracts.The working fluid that goes out from the extraction tower cat head gets into the extracting phase separator, and discharging gets into scavenging tower at the bottom of the extraction Tata.
B: the working fluid that ejects from the extracting phase separator returns the working fluid scale tank, the ydrogen peroxide 50 deallocation system work that goes out at the bottom of the extracting phase separator.The extracting phase separator improves separation efficiency, reduces disengaging time and equipment size, can reclaim more ydrogen peroxide 50.
C: contain little work liquid in the ydrogen peroxide 50 after the extraction, use aromatic hydrocarbons extraction to purify.Aromatic hydrocarbons is from purifying charging at the bottom of the Tata, and ydrogen peroxide 50 is from the scavenging tower top fed.Discharging gets into rare article phase separator at the bottom of the scavenging tower.
D: push up isolating aromatic hydrocarbons from rare article phase separator and get into the aromatic hydrocarbons storage tank, ydrogen peroxide 50 gets into rare article storage tank behind the isolation of purified at the bottom of rare article phase separator.Rare article phase separator improves separation efficiency, reduces disengaging time and equipment size, can reduce the load of follow-up air stripping aromatic hydrocarbons and the discharging that reduces aromatic hydrocarbons.
Described extraction tower cat head is provided with wire mesh demister.
A kind of device that is applied to ydrogen peroxide 50 extraction of the present invention and technology and technology compared with prior art have following beneficial effect: it is bigger to solve the extraction separator and the rare article separator equipment size that use at present; The sedimentation residence time is long, the problem that separation accuracy is lower.The extraction separator and the rare article separator that on original technology basis, change original design are extraction phase separator and rare article phase separator.Increase wire mesh demister at the extraction tower cat head; Improve the separation accuracy of extraction tower; Effectively reduce the load of subsequent technique, extraction separator and rare article separator all are settling vessels in the former technology, when in technology, technological fluctuation being arranged; Be prone to cause in the subsequent technique working fluid to carry instability secretly, novel process improves the safety control in the extraction workshop section one-level subsequent production.Novel process material residence time in equipment is short, and area of dissipation is little, aspect insulation, can reduce the insulation difficulty and reduce the required hear rate investment of insulation.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Accompanying drawing 1 the present invention relates to a kind of extracting phase separator assembly figure that is applied to the ydrogen peroxide 50 extraction.
Accompanying drawing 2 the present invention relates to a kind of rare article phase separator setting drawing that is applied to the ydrogen peroxide 50 extraction.
Wherein: 1, liquid distributor; 2, original fluid container; 3, original fluid container sewage draining exit; 4, drop multiplication filler separation assembly; 5, specific panel group formula separation assembly; 6, sewage draining exit; 7, heavy out; 8, prevent the whirlpool baffle plate; 9, light phase export; 10, the TM mouth of pipe; 11, relief valve port; 12, separating tank; 13, RF; 14, import; 15, liquidometer.
The former artwork of accompanying drawing 3 ydrogen peroxide 50 extraction plants.
A kind of artwork that is applied to the device of ydrogen peroxide 50 extraction that accompanying drawing 4 the present invention relates to.
Embodiment
A kind of device and technology that is applied to the ydrogen peroxide 50 extraction is characterized in that: its structure comprises original fluid container 2, separating tank 12, liquid distributor 1, RF 13, drop multiplication fibrous packing assembly 4, specific panel group formula separation assembly 5, anti-whirlpool baffle plate assembly 8.Drop multiplication fibrous packing assembly 4 with separate specific panel group formula separation assembly 5 and be arranged in the separating tank.Described separating tank 12 is divided into disperse phase and is discharged little cylindrical shell, stablizes two-phase interface, prevents that alkali lye from carrying material secretly; The whirlpool baffle plate 8 of setting up defences in the said separating tank is stablized the separating tank flow field, strengthens separating effect.After raw material gets into original fluid container 2, get into separating tank 12, through 4 of drop multiplication filler discrete group, carry out drop multiplication sepn process through the complex method of specific panel group formula phase separator assembly 5 again with earlier through RF 13.
Described a kind of device and technology that is applied to the ydrogen peroxide 50 extraction; It is characterized in that: offer material inlet 14 on the described original fluid container; The original fluid container bottom offers original fluid container sewage draining exit 3; The top of separating tank offers light phase export 9, the TM mouth of pipe 10, the SV mouth of pipe 11, and the little cylindrical shell of separating tank bottom offers separating tank sewage draining exit 6, heavy out 7.
Described original fluid container 2 is provided with liquid distributor 1.
Be provided with RF 13 in the described separating tank 12.
Be provided with drop multiplication fibrous packing assembly 4 in the described separating tank 12.
Be provided with specific panel group formula separation assembly 5 in the described separating tank 12.
Described separating tank 12 light phase export portions are provided with anti-whirlpool baffle plate 8.
Described separating tank is provided with liquidometer mouth 15.
Described a kind of technology that is applied to the ydrogen peroxide 50 extraction, its characteristic may further comprise the steps:
A: hydrogen peroxide oxidation liquid gets into extraction tower at the bottom of the extraction Tata, and purified water gets into extraction tower from the extraction tower cat head and extracts.The working fluid that goes out from the extraction tower cat head gets into the extracting phase separator, and discharging gets into scavenging tower at the bottom of the extraction Tata.
B: the working fluid that ejects from the extracting phase separator returns the working fluid scale tank, the ydrogen peroxide 50 deallocation system work that goes out at the bottom of the extracting phase separator.The extracting phase separator improves separation efficiency, reduces disengaging time and equipment size, can reclaim more ydrogen peroxide 50.
C: contain little work liquid in the ydrogen peroxide 50 after the extraction, use aromatic hydrocarbons extraction to purify.Aromatic hydrocarbons is from purifying charging at the bottom of the Tata, and ydrogen peroxide 50 is from the scavenging tower top fed.Discharging gets into rare article phase separator at the bottom of the scavenging tower.
D: push up isolating aromatic hydrocarbons from rare article phase separator and get into the aromatic hydrocarbons storage tank, ydrogen peroxide 50 gets into rare article storage tank behind the isolation of purified at the bottom of rare article phase separator.Rare article phase separator improves separation efficiency, reduces disengaging time and equipment size, can reduce the load of follow-up air stripping aromatic hydrocarbons and the discharging that reduces aromatic hydrocarbons.
Described extraction tower cat head is provided with wire mesh demister.
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification sheets just explains principle of the present invention; The present invention also has various changes and modifications under the prerequisite that does not break away from spirit and scope of the invention, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (6)
1. one kind is applied to the device that ydrogen peroxide 50 extracts; It is characterized in that: comprise original fluid container and connected separating tank; One feed distributor is set in the separating tank; Drop multiplication fibrous packing assembly is set in the separating tank and separates specific panel group formula separation assembly, described separating tank is provided with stable two-phase interface, prevents that the disperse phase that the disperse phase discharging is carried secretly from discharging little cylindrical shell, the whirlpool baffle plate of setting up defences in the said separating tank; After raw material gets into original fluid container, get into separating tank, through drop multiplication fibrous packing assembly, carry out drop multiplication sepn process through the complex method of specific panel group formula phase separator assembly again with earlier through feed distributor.
2. a kind of device that is applied to the ydrogen peroxide 50 extraction according to claim 1; It is characterized in that: offer material inlet on the described original fluid container; The original fluid container bottom offers the original fluid container sewage draining exit; The top of separating tank offers light phase export, the TM mouth of pipe, the SV mouth of pipe, and the little cylindrical shell of separating tank bottom offers separating tank sewage draining exit, heavy out.
3. a kind of device and technology that is applied to the ydrogen peroxide 50 extraction according to claim 1 and 2, it is characterized in that: described original fluid container is provided with liquid distributor.
4. a kind of device and technology that is applied to the ydrogen peroxide 50 extraction according to claim 1 and 2, it is characterized in that: described separating tank is provided with the liquidometer mouth.
5. one kind is applied to the technology that ydrogen peroxide 50 extracts, and its characteristic may further comprise the steps:
A: hydrogen peroxide oxidation liquid gets into extraction tower at the bottom of the extraction Tata, and purified water gets into extraction tower from the extraction tower cat head and extracts.The working fluid that goes out from the extraction tower cat head gets into the extracting phase separator, and discharging gets into scavenging tower at the bottom of the extraction Tata.
B: the working fluid that ejects from the extracting phase separator returns the working fluid scale tank, the ydrogen peroxide 50 deallocation system work that goes out at the bottom of the extracting phase separator.The extracting phase separator improves separation efficiency, reduces disengaging time and equipment size, can reclaim more ydrogen peroxide 50.
C: contain little work liquid in the ydrogen peroxide 50 after the extraction, use aromatic hydrocarbons extraction to purify.Aromatic hydrocarbons is from purifying charging at the bottom of the Tata, and ydrogen peroxide 50 is from the scavenging tower top fed.Discharging gets into rare article phase separator at the bottom of the scavenging tower.
D: push up isolating aromatic hydrocarbons from rare article phase separator and get into the aromatic hydrocarbons storage tank, ydrogen peroxide 50 gets into rare article storage tank behind the isolation of purified at the bottom of rare article phase separator.Rare article phase separator improves separation efficiency, reduces disengaging time and equipment size, can reduce the load of follow-up air stripping aromatic hydrocarbons and the discharging that reduces aromatic hydrocarbons.
6. a kind of device and technology that is applied to the ydrogen peroxide 50 extraction according to claim 5, it is characterized in that: described extraction tower cat head is provided with wire mesh demister.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110407930 CN102491281B (en) | 2011-12-09 | 2011-12-09 | Device and process applied to hydrogen peroxide extraction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110407930 CN102491281B (en) | 2011-12-09 | 2011-12-09 | Device and process applied to hydrogen peroxide extraction |
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| CN102491281A true CN102491281A (en) | 2012-06-13 |
| CN102491281B CN102491281B (en) | 2013-07-24 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291274A (en) * | 2014-09-16 | 2015-01-21 | 上海安赐机械设备有限公司 | Reaction-filtration integrated device for hydrogen peroxide hydrogenation section and hydrogen peroxide hydrogenation process |
| CN104291273A (en) * | 2014-09-25 | 2015-01-21 | 上海安赐机械设备有限公司 | Aromatic hydrocarbon extracting device applied behind hydrogen peroxide extraction column and aromatic hydrocarbon extracting technology |
| CN105460902A (en) * | 2015-12-27 | 2016-04-06 | 安徽淮化股份有限公司 | Discharging and separating system applicable to production of hydrogen peroxide |
| CN105731385A (en) * | 2016-03-29 | 2016-07-06 | 福建永荣科技有限公司 | Hydrogen peroxide oxidization extracting tower and method |
| CN109908626A (en) * | 2019-04-26 | 2019-06-21 | 北京凯迪森科技有限公司 | A kind of strengthening extraction device and efficient extracting system and extraction process including it |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1153430A (en) * | 1965-07-21 | 1969-05-29 | Laporte Chemical | Improvements in or relating to a Process and Apparatus for the Production of Hydrogen Peroxide |
| CN1147799A (en) * | 1995-02-28 | 1997-04-16 | 凯默夏尔公司 | Method and plant for producing hydrogen peroxide |
| CN2761580Y (en) * | 2005-01-31 | 2006-03-01 | 黎明化工研究院 | Extraction tower for preducing hydrogen peroxide |
| CN201686491U (en) * | 2010-04-29 | 2010-12-29 | 扬州惠通化工技术有限公司 | Oxidizing system for preparing hydrogen peroxide |
| CN202415156U (en) * | 2011-12-09 | 2012-09-05 | 上海安赐机械设备有限公司 | Device for hydrogen peroxide extraction |
-
2011
- 2011-12-09 CN CN 201110407930 patent/CN102491281B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1153430A (en) * | 1965-07-21 | 1969-05-29 | Laporte Chemical | Improvements in or relating to a Process and Apparatus for the Production of Hydrogen Peroxide |
| CN1147799A (en) * | 1995-02-28 | 1997-04-16 | 凯默夏尔公司 | Method and plant for producing hydrogen peroxide |
| CN2761580Y (en) * | 2005-01-31 | 2006-03-01 | 黎明化工研究院 | Extraction tower for preducing hydrogen peroxide |
| CN201686491U (en) * | 2010-04-29 | 2010-12-29 | 扬州惠通化工技术有限公司 | Oxidizing system for preparing hydrogen peroxide |
| CN202415156U (en) * | 2011-12-09 | 2012-09-05 | 上海安赐机械设备有限公司 | Device for hydrogen peroxide extraction |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291274A (en) * | 2014-09-16 | 2015-01-21 | 上海安赐机械设备有限公司 | Reaction-filtration integrated device for hydrogen peroxide hydrogenation section and hydrogen peroxide hydrogenation process |
| CN104291274B (en) * | 2014-09-16 | 2017-02-15 | 上海安赐环保科技股份有限公司 | Reaction-filtration integrated device for hydrogen peroxide hydrogenation section and hydrogen peroxide hydrogenation process |
| CN104291273A (en) * | 2014-09-25 | 2015-01-21 | 上海安赐机械设备有限公司 | Aromatic hydrocarbon extracting device applied behind hydrogen peroxide extraction column and aromatic hydrocarbon extracting technology |
| CN104291273B (en) * | 2014-09-25 | 2017-09-29 | 上海安赐环保科技股份有限公司 | One kind is applied to aromatic hydrocarbons abjection device and its technique after extraction column of hydrogen peroxide |
| CN105460902A (en) * | 2015-12-27 | 2016-04-06 | 安徽淮化股份有限公司 | Discharging and separating system applicable to production of hydrogen peroxide |
| CN105731385A (en) * | 2016-03-29 | 2016-07-06 | 福建永荣科技有限公司 | Hydrogen peroxide oxidization extracting tower and method |
| CN109908626A (en) * | 2019-04-26 | 2019-06-21 | 北京凯迪森科技有限公司 | A kind of strengthening extraction device and efficient extracting system and extraction process including it |
| CN109908626B (en) * | 2019-04-26 | 2023-10-20 | 北京凯迪森科技有限公司 | Intensified extractor, high-efficiency extraction system comprising same and extraction process |
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| CN102491281B (en) | 2013-07-24 |
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Address after: 201201 Shanghai, Pudong New Area Jin Tang Road, No. 2, block B, 145 Patentee after: SHANGHAI ANHORN ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Address before: 201201 Shanghai, Pudong New Area Jin Tang Road, No. 2, block B, 145 Patentee before: SHANGHAI ANHORN MECHANICAL EQUIPMENT Co.,Ltd. |
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Denomination of invention: A device and process for hydrogen peroxide extraction Effective date of registration: 20220929 Granted publication date: 20130724 Pledgee: Industrial and Commercial Bank of China Limited Shanghai pilot Free Trade Zone Branch Pledgor: SHANGHAI ANHORN ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Registration number: Y2022310000270 |
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