WO2005082831A1 - (メタ)アクリル酸エステル含有液の取り扱い方法 - Google Patents
(メタ)アクリル酸エステル含有液の取り扱い方法 Download PDFInfo
- Publication number
- WO2005082831A1 WO2005082831A1 PCT/JP2004/014932 JP2004014932W WO2005082831A1 WO 2005082831 A1 WO2005082831 A1 WO 2005082831A1 JP 2004014932 W JP2004014932 W JP 2004014932W WO 2005082831 A1 WO2005082831 A1 WO 2005082831A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- meth
- liquid
- extraction
- acrylate
- wastewater
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
- B01D11/0488—Flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
- B01D11/0492—Applications, solvents used
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/56—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/58—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/26—Treatment of water, waste water, or sewage by extraction
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
Definitions
- the present invention relates to a method for handling a (meth) acrylate-containing liquid, and more specifically, a (meth) acrylate-containing liquid that is treated by one or more processes of washing, neutralization, and extraction.
- the acid catalyst and unreacted (meth) acrylic acid are separated and removed from the reaction product by Z or neutralization. Further, even when a heterogeneous solid acid catalyst is used, unreacted alcohol ⁇ ⁇ (meth) acrylic acid is separated and removed from the reaction product by performing an extraction treatment with water or an aqueous solution of an inorganic salt after the reaction. Then, the treatment mixture in each treatment generally contains an organic layer containing a (meth) acrylate and an organic acid salt, an inorganic acid salt, an inorganic salt and Z or alcohol by a liquid-liquid extraction operation. Separated from the aqueous layer.
- the recovery of the active ingredient from the aqueous layer is performed by distillation, and the wastewater or wastewater obtained by recovering the active ingredient is used as it is for the water of each of the above-described treatments and the aqueous solution of alkali metal. It is recycled as an aqueous solution of an inorganic salt.
- Patent Document 1 JP-A-8-10508
- Patent Document 2 JP 2003-231665 A
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a (meth) acrylic acid ester-containing solution in one or more processes of washing, neutralization, and extraction.
- the wastewater or wastewater obtained by collecting the active ingredient after the treatment in one or more of the above processes is circulated to the preceding process In use, sludge generation is suppressed and liquid-liquid separation efficiency is poor.
- the present invention has been completed as a result of further studies based on the above findings, and the gist of the present invention is to wash, neutralize, or extract the (meth) acrylic acid ester-containing liquid with any of the following methods:
- wastewater or wastewater solution obtained in One aspect of the present invention resides in a method and a method for handling a (meth) acrylate-containing liquid, which comprises removing a solid content after cooling to a temperature of 50 ° C.
- the (meth) acrylate-containing liquid is subjected to one or more processes of washing, neutralization, and / or extraction of the (meth) acrylate-containing liquid.
- Handle! / ⁇ The wastewater or wastewater obtained by recovering the active ingredient after the treatment in one or more of the above processes is recycled and used in the preceding process, thereby suppressing sludge generation and liquid-liquid separation. Long-term continuous and stable operation without deterioration in efficiency or reduction in distillation efficiency in the post-process can be achieved.
- FIG. 1 is a flowchart showing an embodiment of the present invention, taking an extraction process as an example.
- the (meth) acrylic acid ester-containing liquid in the present invention is a reaction liquid obtained by subjecting (meth) acrylic acid and alcohol to an esterification reaction in the presence of an acid catalyst.
- the reaction product (meth) acrylate is not particularly limited, but methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, ( Examples thereof include cyclohexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, and methoxyethyl (meth) acrylate.
- the alcohol used as the raw material of the (meth) acrylate may be used as the alcohol to be used.
- Examples of the acid catalyst include a homogeneous acid catalyst and a heterogeneous solid acid catalyst.
- Examples of the homogeneous acid catalyst include sulfuric acid, p-toluenesulfonic acid, and methanesulfonic acid.
- the homogeneous acid catalyst is generally contained in the aqueous layer after one or more of washing, neutralization and extraction using water and an aqueous solution of Z or alkali.
- Examples of the heterogeneous solid acid catalyst include strongly acidic cation exchange resin, activated clay, and acidic zeolite.
- Unreacted (meth) acrylic acid and unreacted alcohol in the esterification reaction product are subjected to at least one of washing, neutralization and extraction using water and Z or an aqueous alkali solution. After that, it is generally contained on the aqueous layer side.
- the esterification reaction can be performed by a conventionally known method, and is not particularly limited.
- the industrial production method may be a batch type or a continuous type.
- the molar ratio of the raw materials in the esterification reaction, the type and amount of the catalyst used in the reaction, the reaction method, the reaction conditions and the like may be appropriately selected depending on the type of the alcohol used.
- oxygen-containing gas as a polymerization inhibitor or polymerization inhibitor is added to the reactor or distillation tower. It is preferred to add
- the (meth) acrylate-containing liquid obtained by the esterification reaction is subjected to catalyst separation, concentration and purification.
- Unit operations include processes such as washing, neutralization, extraction, evaporation, and distillation.
- water or aqueous solution used for washing, neutralization, and extraction processing in addition to the above-mentioned water and Z or alkaline aqueous solution, alcohol can be more efficiently extracted to the aqueous layer side, or the organic layer can be provided with a specific gravity difference.
- an aqueous solution in which an inorganic salt such as sodium ammonium sulfate is dissolved, or the catalyst used for the esterification reaction or salts of (meth) acrylic acid is used.
- an apparatus for performing washing, neutralization, and extraction processing various apparatuses such as a mixer Z settler type, an extraction tower type, and a stirring tank type can be used.
- an extraction column As the type of the extraction column, a packed column type, a stage column type, a rotating disk type and the like can be used.
- the treatment mixture in each treatment is generally subjected to a liquid-liquid extraction operation to combine an organic layer containing a (meth) acrylic acid ester with an organic acid salt, an inorganic acid salt, an inorganic salt, and / or an alcohol.
- the extraction efficiency and the separation efficiency are higher when the liquid-liquid extraction operation is performed at low temperature. Further, since (meth) acrylic acid ester is susceptible to hydrolysis reaction, it is preferable to carry out a liquid-liquid extraction operation at a low temperature.
- the liquid-liquid extraction operation is usually performed at a temperature of 10-50 ° C.
- the (meth) acrylic ester-containing liquid to be subjected to the above-mentioned washing, neutralization, and extraction treatments includes, in addition to the esterification reaction product itself, a catalyst and Z Or a liquid from which most of (meth) acrylic acid is removed is included.
- the temperature of the wastewater or wastewater solution is cooled to 10 to 50 ° C, preferably 10 to 40 ° C, and solid content is precipitated. It is important to remove the solids that are precipitated in the process.
- the above temperature range corresponds to the temperature range at the time of liquid-liquid extraction, and by cooling the wastewater or wastewater solution to the above temperature range, the solubility of the dissolved components contained therein is reduced to precipitate. I can do it. Therefore, if the wastewater or wastewater solution subjected to such treatment is reused, solids do not precipitate during liquid-liquid extraction, and the liquid-liquid separation efficiency is not deteriorated, and the distillation efficiency in the subsequent process is not reduced due to long-term continuous operation. Stable operation can be achieved.
- the solids removed from the wastewater or wastewater solution include the process for producing (meth) acrylic esters such as poly (meth) acrylic acid, poly (meth) acrylate, and Michael-added high-molecular-weight polyester. And the above-mentioned various salts to be added for the purpose of facilitating liquid-liquid extraction. In addition, sludges such as iron, slime, scum, etc. Also included are solids such as
- Removal of the precipitated solids is separated from the wastewater or wastewater solution using filtration or sedimentation separation means.
- a strainer, a filter or the like can be used, and in the sedimentation separation, a stationary separation tank, a centrifuge, or the like can be used, but it is not particularly limited to these. From the viewpoint of separation effect, installation cost, ease of operation, and the like, it is preferable to perform separation using a filter having a permeation particle diameter of 11 O / zm.
- the temperature at which solids are separated for example, when the filter is passed through a stationary separation tank and through a filter, is also in the range of 10 to 50 ° C, the same as the temperature at which solids are cooled and precipitated.
- a liquid containing methyl acrylate is continuously supplied from the lower part of the extraction column (1) through a line (L1).
- the waste aqueous solution of the pre-process power used for the extraction treatment is continuously supplied to the upper part of the extraction tower (1) through the pipe (L2) after the solid content is removed by the filter (6).
- the organic layer which is mainly a raffinate from which methanol has been extracted, is also withdrawn from the upper part of the extraction tower (1) through the pipe (L3) and passed through a heat exchanger (3) to separate light-boiling components (not shown).
- the aqueous layer which is mainly extratato from which methanol has been extracted, is withdrawn from the lower part of the extraction tower (1) through a pipe (L4) and continuously supplied to the alcohol recovery tower (2).
- methanol is recovered from the top of the tower, and is recycled to the reaction step (not shown) through the line (L5).
- the waste aqueous solution containing a small amount of organic matter (polymer, etc.) and inorganic matter (iron, etc.) at the bottom of the tower is cooled by heat exchange (3) and (4) and temporarily stored in the buffer drum (5). Solids precipitate in the waste aqueous solution, but light precipitated solids such as polymers float on the liquid surface and aggregate.
- Example 1 In the acrylic acid methyl ester production process, a continuous fraction was removed from the esterification reaction product by distilling and removing heavy components such as acrylic acid.
- a liquid containing methyl acrylate was continuously supplied from the lower part of the packed column type extraction column (1) through a pipe line (L1).
- the average composition of the feed material to the extraction tower (1) was 13% by weight of water, 10% by weight of methanol, 75% by weight of methyl acrylate, and 2% by weight of others, and the average flow rate was 2.8.
- T was Z hours.
- the extraction operation was performed at 25 ° C.
- the aqueous layer which is an extratato from which methanol was mainly extracted, was withdrawn from the lower part of the extraction column (1) through a line (L4) and continuously supplied to an alcohol recovery column (2) operated at normal pressure.
- methanol was recovered from the top of the tower, and circulated and reused in a reaction step (not shown) through a line (L5).
- the waste aqueous solution containing a small amount of organic substances (polymers, etc.) and inorganic substances (iron, etc.) at the bottom of the tower is cooled by heat exchange (3) and (4) and cooled to a temperature of 98 ° C and 25 ° C. It was once stored in a buffer drum (5).
- the waste aqueous solution in which the solid content is precipitated is removed from the line (L7) to remove light solids, and further passed through the line (L6) to a filter (6) (a cartridge filter having a permeation particle diameter of 3 ⁇ m). After the remaining solid content was separated and removed, it was recycled to the upper part of the extraction column (1).
- the organic layer which is mainly a raffinate from which methanol has been extracted, is extracted from the upper part of the extraction column (1) through a pipe (L3), passed through a heat exchanger (3), and subjected to a light-boiling-point component separation step (shown in the drawing). Without).
- Example 1 a feed material having an average composition of 13% by weight of water, 10% by weight of methanol, 75% by weight of methyl acrylate, and 2% by weight of others was used, and the average flow rate was 3.0 tons.
- the continuous operation was performed by the same operation as in Example 1 except that the extraction operation temperature was changed to 20 ° C during the Z hour.
- the methanol concentration in the organic layer above the extraction tower (1) was stable between 0.2-0.3% by weight, and continuous stable operation was achieved. Comparative Example 1:
- Example 1 the same equipment, raw materials and operation as in Example 1 were performed except that cooling and filtering were not performed on the waste aqueous solution discharged from the bottom of the alcohol recovery tower (2). Continuous operation was performed under the conditions. As a result, the methanol concentration in the upper organic layer of the recovery tower (2) exceeded 0.2% by weight after 200 days. In addition, the liquid-liquid interface became unstable due to the start of accumulation of precipitated solids in the extraction tower (1), and ethanol and water increased in the liquid in line (L3), and the liquid after line (L3) The operation of the equipment became impossible. On the other hand, in the alcohol recovery tower (2), the pressure difference between the top and bottom started to rise, and the temperature of the bottom rose, so the supply of steam, which is the heat source of the alcohol recovery tower (2), decreased, and operation was impossible. Noh.
- Example 2 continuous operation was carried out using exactly the same equipment, raw materials and operating conditions as in Example 2, except that the waste aqueous solution discharged from the bottom of the alcohol recovery tower (2) was not cooled or filtered. did.
- the methanol concentration in the upper organic layer of the recovery tower (2) exceeded 0.3% by weight after 150 days.
- the liquid-liquid interface became unstable due to the start of accumulation of precipitated solids in the extraction tower (1), and ethanol and water increased in the liquid in line (L3), and the liquid after line (L3) The operation of the equipment became impossible.
- the pressure difference between the top and bottom started to rise, and the temperature of the bottom rose, so the supply of steam, which is the heat source of the alcohol recovery tower (2), decreased, and operation was impossible. Noh.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
- Extraction Or Liquid Replacement (AREA)
- Physical Water Treatments (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04792201A EP1721886B1 (en) | 2004-03-01 | 2004-10-08 | Method of processing methacrylic-ester-containing solution |
BRPI0405628-0A BRPI0405628B1 (pt) | 2004-03-01 | 2004-10-08 | Método para manipulação de solução contendo éster (met) acrílico |
CN2004800003907A CN1697823B (zh) | 2004-03-01 | 2004-10-08 | 处理含(甲基)丙烯酸酯溶液的方法 |
US11/015,744 US20050189296A1 (en) | 2004-03-01 | 2004-12-20 | Method for handling (meth) acrylic ester-containing solution |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-056333 | 2004-03-01 | ||
JP2004056333A JP4654584B2 (ja) | 2004-03-01 | 2004-03-01 | (メタ)アクリル酸エステル含有液の取り扱い方法 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/015,744 Continuation US20050189296A1 (en) | 2004-03-01 | 2004-12-20 | Method for handling (meth) acrylic ester-containing solution |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005082831A1 true WO2005082831A1 (ja) | 2005-09-09 |
Family
ID=34908909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/014932 WO2005082831A1 (ja) | 2004-03-01 | 2004-10-08 | (メタ)アクリル酸エステル含有液の取り扱い方法 |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1721886B1 (ja) |
JP (1) | JP4654584B2 (ja) |
CN (1) | CN1697823B (ja) |
AU (1) | AU2004235633A1 (ja) |
BR (1) | BRPI0405628B1 (ja) |
ES (1) | ES2358194T3 (ja) |
RU (1) | RU2004137684A (ja) |
WO (1) | WO2005082831A1 (ja) |
ZA (1) | ZA200409853B (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006058251A1 (de) * | 2006-12-08 | 2008-06-12 | Evonik Röhm Gmbh | Verfahren und Vorrichtung zur Herstellung von Methacrylsäurealkylestern |
JP2009167374A (ja) * | 2007-07-10 | 2009-07-30 | Sekisui Chem Co Ltd | 高分子量のヒドロキシ安息香酸エステル類の製造方法 |
CN101343223B (zh) * | 2008-08-20 | 2011-03-16 | 山东齐鲁石化开泰实业股份有限公司 | 连续酯化法丙烯酸甲/乙酯生产系统可调节装置 |
JP5720528B2 (ja) * | 2011-10-19 | 2015-05-20 | 東亞合成株式会社 | アクリレートの製造方法及びアクリル酸の回収方法 |
FR3010998B1 (fr) * | 2013-09-23 | 2016-11-25 | Arkema France | Procede d'extraction liquide - liquide pour la production d'esters acryliques |
CN105084608B (zh) * | 2015-09-17 | 2017-05-31 | 博天环境集团股份有限公司 | 一种丙烯酸酯废水生化处理的预处理方法 |
CN106117014A (zh) * | 2016-06-20 | 2016-11-16 | 山东广浦生物科技有限公司 | 从甲基丙烯酸甲酯‑甲醇混合液中萃取甲醇的方法 |
KR20220125361A (ko) * | 2020-02-26 | 2022-09-14 | 미쯔비시 케미컬 주식회사 | 물을 포함하는 결정의 분리 방법, 메타크릴산의 제조 방법, 및 메타크릴산 에스터의 제조 방법 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6299345A (ja) * | 1985-10-24 | 1987-05-08 | Nippon Kayaku Co Ltd | アクリル酸エステル又はメタクリル酸エステルの回収法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3346822B2 (ja) * | 1993-03-31 | 2002-11-18 | 三菱化学株式会社 | アクリル酸エステル又はメタクリル酸エステルの製造法 |
DE10144490A1 (de) * | 2001-09-10 | 2003-03-27 | Basf Ag | Verfahren zur Herstellung von (Meth)acrylsäureestern |
-
2004
- 2004-03-01 JP JP2004056333A patent/JP4654584B2/ja not_active Expired - Lifetime
- 2004-10-08 ES ES04792201T patent/ES2358194T3/es active Active
- 2004-10-08 AU AU2004235633A patent/AU2004235633A1/en not_active Abandoned
- 2004-10-08 CN CN2004800003907A patent/CN1697823B/zh active Active
- 2004-10-08 ZA ZA200409853A patent/ZA200409853B/en unknown
- 2004-10-08 EP EP04792201A patent/EP1721886B1/en active Active
- 2004-10-08 RU RU2004137684/15A patent/RU2004137684A/ru not_active Application Discontinuation
- 2004-10-08 WO PCT/JP2004/014932 patent/WO2005082831A1/ja not_active Application Discontinuation
- 2004-10-08 BR BRPI0405628-0A patent/BRPI0405628B1/pt active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6299345A (ja) * | 1985-10-24 | 1987-05-08 | Nippon Kayaku Co Ltd | アクリル酸エステル又はメタクリル酸エステルの回収法 |
Also Published As
Publication number | Publication date |
---|---|
EP1721886A1 (en) | 2006-11-15 |
EP1721886A4 (en) | 2007-05-09 |
ZA200409853B (en) | 2007-04-25 |
BRPI0405628A (pt) | 2006-02-21 |
JP2005246132A (ja) | 2005-09-15 |
JP4654584B2 (ja) | 2011-03-23 |
CN1697823A (zh) | 2005-11-16 |
BRPI0405628B1 (pt) | 2014-02-18 |
RU2004137684A (ru) | 2006-03-20 |
ES2358194T3 (es) | 2011-05-06 |
CN1697823B (zh) | 2010-11-10 |
EP1721886B1 (en) | 2011-03-09 |
AU2004235633A1 (en) | 2005-09-15 |
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