CN108467347A - A method of electrolysis tetrabutyl ammonium sulfate recycles tetrabutylammonium hydroxide - Google Patents
A method of electrolysis tetrabutyl ammonium sulfate recycles tetrabutylammonium hydroxide Download PDFInfo
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- CN108467347A CN108467347A CN201810241823.1A CN201810241823A CN108467347A CN 108467347 A CN108467347 A CN 108467347A CN 201810241823 A CN201810241823 A CN 201810241823A CN 108467347 A CN108467347 A CN 108467347A
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/44—Ion-selective electrodialysis
- B01D61/445—Ion-selective electrodialysis with bipolar membranes; Water splitting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/44—Ion-selective electrodialysis
- B01D61/46—Apparatus therefor
- B01D61/48—Apparatus therefor having one or more compartments filled with ion-exchange material, e.g. electrodeionisation
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/90—Separation; Purification
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/90—Separation; Purification
- C01B17/901—Recovery from spent acids containing metallic ions, e.g. hydrolysis acids, pickling acids
- C01B17/904—Recovery from spent acids containing metallic ions, e.g. hydrolysis acids, pickling acids by ion-exchange
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/82—Purification; Separation; Stabilisation; Use of additives
- C07C209/84—Purification
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- Health & Medical Sciences (AREA)
- Urology & Nephrology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention discloses a kind of methods that electrolysis tetrabutyl ammonium sulfate recycles tetrabutylammonium hydroxide, belong to bipolar membrane electrodialysis recycling tetrabutylammonium hydroxide technical field.Technical scheme of the present invention main points are：Tetrabutyl ammonium sulfate is subjected to bipolar membrane electrodialysis in the four compartment electrodialysis plants with center liquid chamber, the four compartment electrodialysis plants with center liquid chamber include the pole fluid chamber of both sides and the electrodialysis compartment that is clipped among the pole fluid chamber of both sides, electrodialysis compartment is four cell structures, by Bipolar Membrane, cation-exchange membrane, anion-exchange membrane, the center liquid chamber that cation-exchange membrane and Bipolar Membrane alternate intervals are arranged to make up, acid solution room, feed compartment and lye chamber unit group rearrange, tetrabutylammonium hydroxide solution is obtained in lye room, acid solution obtains sulfuric acid solution in room.The present invention can significantly improve the purity and the rate of recovery of recovery product tetrabutylammonium hydroxide.
Description
Technical field
The invention belongs to bipolar membrane electrodialysis to recycle tetrabutylammonium hydroxide technical field, and in particular to a kind of four fourths of electrolysis
The method that base ammonium sulfate recycles tetrabutylammonium hydroxide.
Background technology
Tetrabutylammonium hydroxide（TBAOH）It is a kind of organic quaternary ammonium highly basic.Tetrabutylammonium hydroxide is commonly used for organic synthesis
Reagent, surfactant, phase transfer catalyst, the cleaning reagent of electronics industry, polarographic analysis reagent etc..Wherein high-purity tetrabutyl
Ammonium hydroxide is mainly used for the cleaning and corrosion of chip, yield rate of its purity and cleanliness factor to integrated circuit, electrical property
And reliability suffers from highly important influence.High-purity tetrabutylammonium hydroxide will substitute four since it is with unique effect
Ammonium hydroxide and tetraethyl hydroxide are pressed, and will be used for the following more advanced Nanometer core as third generation micro-electronics chemicals
On piece.Therefore, the method that research prepares high-purity tetrabutylammonium hydroxide has the development of promotion microelectronic industry very important
Effect.
The preparation method of tetrabutylammonium hydroxide mainly have silver oxide method, potassium hydroxide method, electrolysis, ion-exchange,
Organic acid 4-butyl ammonium Current Decomposition method, ionic membrane method etc..The patent of Publication No. CN102030665A discloses one kind and adopts
With chemical method prepare tetrabutylammonium hydroxide by method, the tetrabutylammonium hydroxide purity prepared by this method is not high, exists big
Measure anion（Exist based on bromide ion）, it is difficult to reach the requirement of microelectronics industry.It can be prepared using anion exchange method
Go out the higher tetrabutylammonium hydroxide of purity, but exchange degree generally up to 90%.The patent of Publication No. CN104278288A is public
A kind of method that continuous electrolysis prepares high-purity tetrabutylammonium hydroxide is opened, this method directly uses three compartment bipolar membrane electrodialysis
Technique causes potassium ion to generate transport phenomena, easily causes pole fluid chamber, acid solution chamber contamination, reduces tetrabutylammonium hydroxide
The rate of recovery, cause the raising of cost recovery and the waste of resource to a certain extent.
Invention content
The technical problem to be solved by the present invention is to provide a kind of electrolysis tetrabutyl ammonium sulfates to recycle tetrabutylammonium hydroxide
The method of ammonium can significantly improve the purity and the rate of recovery of recovery product tetrabutylammonium hydroxide using this method.
The present invention adopts the following technical scheme that solve above-mentioned technical problem, a kind of electrolysis tetrabutyl ammonium sulfate recycling
The method of tetrabutylammonium hydroxide, it is characterised in that：By tetrabutyl ammonium sulfate in the four compartment electric osmoses with center liquid chamber
Carry out bipolar membrane electrodialysis in analysis apparatus, the four compartment electrodialysis plants with center liquid chamber include both sides pole fluid chamber and
The electrodialysis compartment being clipped among the pole fluid chamber of both sides, electrodialysis compartment be four cell structures, by Bipolar Membrane, cation-exchange membrane,
Center liquid chamber, acid solution room, feed compartment and the alkali that anion-exchange membrane, cation-exchange membrane and Bipolar Membrane alternate intervals are arranged to make up
Liquid chamber unit group rearranges, and tetrabutylammonium hydroxide solution is obtained in lye room, and acid solution obtains sulfuric acid solution in room.
Further preferably, metabisulfite solution, sulfuric acid solution or hydrochloric acid solution are added in the center liquid chamber.
Further preferably, metabisulfite solution, the sulfuric acid that molar concentration is 0.05-1.0mol/L are added in the center liquid chamber
Solution or hydrochloric acid solution.
Further preferably, the tetrabutyl ammonium sulfate that mass concentration is 30-200g/L is added in the feed compartment.
Further preferably, the current density of the four compartment electrodialysis plant electrolytic processes with center liquid chamber is 100-
500A/m2。
Further preferably, dilution heat of sulfuric acid is separately added into the pole fluid chamber, the pole fluid chamber liquid outlet of anode-side passes through pipe
The pole fluid chamber inlet of the road and flowmeter being sequentially connected on pipeline, pole flow container and delivery pump and cathode side connects, intermediate fluid
Room liquid outlet is connected by the pipeline and flowmeter being sequentially connected on pipeline, intermediate flow container and delivery pump and center liquid chamber inlet
It connects, acid solution room liquid outlet passes through the pipeline and flowmeter being sequentially connected on pipeline, acid solution tank and delivery pump and acid solution room feed liquor
Mouth connection, feed compartment liquid outlet pass through the pipeline and flowmeter being sequentially connected on pipeline, material liquid tank and delivery pump and feed compartment
Inlet connects, and lye room liquid outlet passes through the pipeline and flowmeter being sequentially connected on pipeline, alkali liquid tank and delivery pump and alkali
Liquid chamber inlet connects.
Further preferably, the cation-exchange membrane is there is the cation of selective penetrated property to hand over tetrabutylammonium radical ion
Change film.
The four compartment bipolar membrane electrodialysis techniques with center liquid chamber that the present invention uses, which have, improves tetrabutylammonium hydroxide
The characteristics of ammonium, retrieval of sulfuric acid purity, feed compartment after processing, pole fluid chamber, acid solution room are substantially free of tetrabutylammonium radical ion,
Improve the rate of recovery of tetrabutylammonium hydroxide；The four compartment bipolar membrane electrodialysis with center liquid chamber have reduction lye simultaneously
Sulfuric acid improves the purity of tetrabutylammonium hydroxide with the effect of ion concentration in room.
Description of the drawings
Fig. 1 is electrodialysis plant connection figure of the present invention.
In figure：1- pole fluid chambers, 2- center liquid chambers, 3- acid solutions room, 4- feed compartments, 5- lye room, 6- Bipolar Membranes, 7- anion
Exchange membrane, 8- cation-exchange membranes, the centres 9- flow container, 10- material liquid tanks, the poles 11- flow container, 12- acid solution tanks, 13- alkali liquid tanks.
Specific implementation mode
The above of the present invention is described in further details by the following examples, but this should not be interpreted as to this
The range for inventing above-mentioned theme is only limitted to embodiment below, and all technologies realized based on the above of the present invention belong to this hair
Bright range.
As shown in Figure 1, the four compartment electrodialysis plants with center liquid chamber include the pole fluid chamber 1 of both sides and are clipped in two side poles
Electrodialysis compartment among liquid chamber 1, electrodialysis compartment are four cell structures, are handed over by Bipolar Membrane 6, cation-exchange membrane 8, anion
Change center liquid chamber 2, acid solution room 3, feed compartment 4 and lye that film 7, cation-exchange membrane 8 and 6 alternate intervals of Bipolar Membrane are arranged to make up
5 unit group of room rearranges, and acid sodium solution, sulfuric acid solution or hydrochloric acid solution are added in center liquid chamber 2, four are added in feed compartment 4
Butyl ammonium sulfate, is separately added into dilution heat of sulfuric acid in pole fluid chamber 1,1 liquid outlet of pole fluid chamber of anode-side by pipeline and according to
1 inlet of pole fluid chamber of the secondary flowmeter being connected on pipeline, pole flow container 11 and delivery pump and cathode side connects, center liquid chamber 2
Liquid outlet is connected by the pipeline and flowmeter being sequentially connected on pipeline, intermediate flow container 9 and delivery pump and 2 inlet of center liquid chamber
It connects, 3 liquid outlet of acid solution room passes through the pipeline and flowmeter being sequentially connected on pipeline, acid solution tank 12 and delivery pump and acid solution room 3
Inlet connect, 4 liquid outlet of feed compartment by the pipeline and flowmeter being sequentially connected on pipeline, material liquid tank 10 and delivery pump with
4 inlet of feed compartment connects, and 5 liquid outlet of lye room passes through pipeline and the flowmeter being sequentially connected on pipeline, 13 and of alkali liquid tank
Delivery pump is connect with 5 inlet of lye room, and the cation-exchange membrane 8 is to have selective penetrated property to tetrabutylammonium radical ion
Cation-exchange membrane.
Embodiment 1
By (TBA) containing 30g/L2SO4Solution carries out the four compartment bipolar membrane electrodialysis with center liquid chamber, and equipment uses day
This Bipolar Membrane and Japanese cation-exchange membrane and German anion-exchange membrane, center liquid chamber are the sulfuric acid solution of 0.05mol/L, electricity
The current density of solution preocess is 200A/m2, feed compartment flow is 0.2L/h, electrodialysis 1.5h, at the end of solution electricity in feed compartment
Conductance is 835 μ s, and electrical conductivity of solution is 7.3ms in lye room, generates the tetrabutylammonium hydroxide of 0.15mol, tetrabutyl hydrogen-oxygen
Change the rate of recovery of ammonium>99%, purity is concentrated into sulfate radical in the tetrabutylammonium hydroxide solution that mass fraction is 40% up to 98.9%
Ion concentration is less than 1500ppm.
Embodiment 2
By (TBA) containing 70g/L2SO4Solution carries out the four compartment bipolar membrane electrodialysis with center liquid chamber, and equipment uses day
This Bipolar Membrane and Japanese cation-exchange membrane and German anion-exchange membrane, center liquid chamber are the sulfuric acid solution of 0.1mol/L, electricity
The current density of solution preocess is 200A/m2, feed compartment flow is 0.2L/h, electrodialysis 3h, at the end of solution conductivity in feed compartment
Rate is 1068 μ s, and electrical conductivity of solution is 11.2ms in lye room, generates the tetrabutylammonium hydroxide of 0.38mol, tetrabutyl hydrogen-oxygen
Change the rate of recovery of ammonium>99%, purity is concentrated into sulfate radical in the tetrabutylammonium hydroxide solution that mass fraction is 40% up to 98.2%
Ion concentration is less than 2800ppm.
Embodiment 3
By (TBA) containing 200g/L2SO4Solution carries out the four compartment bipolar membrane electrodialysis with center liquid chamber, and equipment uses
Japanese Bipolar Membrane and Japanese cation-exchange membrane and German anion-exchange membrane, center liquid chamber are the sulfuric acid solution of 0.1mol/L,
The current density of electrolytic process is 200A/m2, feed compartment flow is 0.2L/h, electrodialysis 8.5h, at the end of solution in feed compartment
Conductivity is 1.3ms, and electrical conductivity of solution is 32.5ms in lye room, generates the tetrabutylammonium hydroxide of 0.93mol, tetrabutylammonium hydrogen
The rate of recovery of amine-oxides>99%, purity is concentrated into sulfuric acid in the tetrabutylammonium hydroxide solution that mass fraction is 40% up to 98.6%
Radical ion content is less than 4500ppm.
The above description is merely a specific embodiment, it is not limited to this, any skill for being familiar with the art
Art personnel in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover the protection model in the present invention
Within enclosing.
Claims (7)
1. a kind of method of electrolysis tetrabutyl ammonium sulfate recycling tetrabutylammonium hydroxide, it is characterised in that：By tetrabutyl sulphur
Acid ammonium solution carries out bipolar membrane electrodialysis in the four compartment electrodialysis plants with center liquid chamber, described with center liquid chamber
Four compartment electrodialysis plants include the pole fluid chamber of both sides and the electrodialysis compartment that is clipped among the pole fluid chamber of both sides, and electrodialysis compartment is
Four cell structures are arranged by Bipolar Membrane, cation-exchange membrane, anion-exchange membrane, cation-exchange membrane and Bipolar Membrane alternate intervals
Center liquid chamber, acid solution room, feed compartment and the lye chamber unit group that row are constituted rearrange, and lye obtains tetrabutylammonium hydroxide in room
Ammonium salt solution, acid solution obtain sulfuric acid solution in room.
2. the method for electrolysis tetrabutyl ammonium sulfate recycling tetrabutylammonium hydroxide according to claim 1, feature
It is：Metabisulfite solution, sulfuric acid solution or hydrochloric acid solution are added in the center liquid chamber.
3. the method for electrolysis tetrabutyl ammonium sulfate recycling tetrabutylammonium hydroxide according to claim 1, feature
It is：It is molten that metabisulfite solution, sulfuric acid solution or hydrochloric acid that molar concentration is 0.05-1.0mol/L are added in the center liquid chamber
Liquid.
4. the method for electrolysis tetrabutyl ammonium sulfate recycling tetrabutylammonium hydroxide according to claim 1, feature
It is：The tetrabutyl ammonium sulfate that mass concentration is 30-200g/L is added in the feed compartment.
5. the method for electrolysis tetrabutyl ammonium sulfate recycling tetrabutylammonium hydroxide according to claim 1, feature
It is：The current density of the four compartment electrodialysis plant electrolytic processes with center liquid chamber is 100-500A/m2。
6. the method for electrolysis tetrabutyl ammonium sulfate recycling tetrabutylammonium hydroxide according to claim 1, feature
It is：Dilution heat of sulfuric acid is separately added into the pole fluid chamber, the pole fluid chamber liquid outlet of anode-side by pipeline and is sequentially connected to
Flowmeter, pole flow container and the connection of the pole fluid chamber inlet of delivery pump and cathode side, center liquid chamber liquid outlet on pipeline pass through pipe
The road and flowmeter being sequentially connected on pipeline, intermediate flow container and delivery pump are connect with center liquid chamber inlet, and acid solution room goes out liquid
Mouth is connect by the pipeline and flowmeter being sequentially connected on pipeline, acid solution tank and delivery pump with acid solution room inlet, feed compartment
Liquid outlet is connect by the pipeline and flowmeter being sequentially connected on pipeline, material liquid tank and delivery pump with feed compartment inlet, alkali
Liquid chamber liquid outlet is connected by the pipeline and flowmeter being sequentially connected on pipeline, alkali liquid tank and delivery pump and lye room inlet
It connects.
7. the method for electrolysis tetrabutyl ammonium sulfate recycling tetrabutylammonium hydroxide according to claim 1, feature
It is：The cation-exchange membrane is the cation-exchange membrane for having selective penetrated property to tetrabutylammonium radical ion.
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| CN201810241823.1A CN108467347A (en) | 2018-03-22 | 2018-03-22 | A method of electrolysis tetrabutyl ammonium sulfate recycles tetrabutylammonium hydroxide |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109331663A (en) * | 2018-11-13 | 2019-02-15 | 北京廷润膜技术开发股份有限公司 | Bipolar membrane displacement electrodialysis plant and the method that lithium hydroxide is prepared using bipolar membrane displacement electrodialysis plant |
| CN110158114A (en) * | 2019-05-31 | 2019-08-23 | 中触媒新材料股份有限公司 | A kind of three films, the four Room electrolysis system preparing tetra-alkyl ammonium hydroxide and method |
| CN110772997A (en) * | 2019-10-30 | 2020-02-11 | 雅邦绿色过程与新材料研究院南京有限公司 | Organic phase electromagnetic field dialysis process for upgrading purity of semiconductor chemicals |
| CN113101808A (en) * | 2020-01-09 | 2021-07-13 | 国家能源投资集团有限责任公司 | CO (carbon monoxide)2Electrodialysis regeneration device and method for trapping amine liquid |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1334796A (en) * | 1998-12-07 | 2002-02-06 | Basf公司 | Method for producing or purifying onium hydroxides by means of electrodialysis |
| CN104278288A (en) * | 2014-09-30 | 2015-01-14 | 赵文洲 | Method for preparing high-purity tetrabutyl ammonium hydroxide by continuous electrolysis |
| CN105833729A (en) * | 2016-05-12 | 2016-08-10 | 浙江赛特膜技术有限公司 | Bipolar membrane electrodialysis system and method for preparing high-purity tetramethylammonium hydroxide through system |
| CN107118105A (en) * | 2017-07-03 | 2017-09-01 | 杭州龙智科技有限公司 | The method that coupling bipolar membrane electrodialysis and membrane distillation prepare methyl triethylammonium hydroxide |
-
2018
- 2018-03-22 CN CN201810241823.1A patent/CN108467347A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1334796A (en) * | 1998-12-07 | 2002-02-06 | Basf公司 | Method for producing or purifying onium hydroxides by means of electrodialysis |
| CN104278288A (en) * | 2014-09-30 | 2015-01-14 | 赵文洲 | Method for preparing high-purity tetrabutyl ammonium hydroxide by continuous electrolysis |
| CN105833729A (en) * | 2016-05-12 | 2016-08-10 | 浙江赛特膜技术有限公司 | Bipolar membrane electrodialysis system and method for preparing high-purity tetramethylammonium hydroxide through system |
| CN107118105A (en) * | 2017-07-03 | 2017-09-01 | 杭州龙智科技有限公司 | The method that coupling bipolar membrane electrodialysis and membrane distillation prepare methyl triethylammonium hydroxide |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109331663A (en) * | 2018-11-13 | 2019-02-15 | 北京廷润膜技术开发股份有限公司 | Bipolar membrane displacement electrodialysis plant and the method that lithium hydroxide is prepared using bipolar membrane displacement electrodialysis plant |
| CN110158114A (en) * | 2019-05-31 | 2019-08-23 | 中触媒新材料股份有限公司 | A kind of three films, the four Room electrolysis system preparing tetra-alkyl ammonium hydroxide and method |
| CN110772997A (en) * | 2019-10-30 | 2020-02-11 | 雅邦绿色过程与新材料研究院南京有限公司 | Organic phase electromagnetic field dialysis process for upgrading purity of semiconductor chemicals |
| CN113101808A (en) * | 2020-01-09 | 2021-07-13 | 国家能源投资集团有限责任公司 | CO (carbon monoxide)2Electrodialysis regeneration device and method for trapping amine liquid |
| CN113101808B (en) * | 2020-01-09 | 2022-09-23 | 国家能源投资集团有限责任公司 | CO (carbon monoxide) 2 Electrodialysis regeneration device and method for trapping amine liquid |
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