CN104557539A - Method for separating methyl acrylate (MA) from methyl propionate (MP) - Google Patents
Method for separating methyl acrylate (MA) from methyl propionate (MP) Download PDFInfo
- Publication number
- CN104557539A CN104557539A CN201410807542.XA CN201410807542A CN104557539A CN 104557539 A CN104557539 A CN 104557539A CN 201410807542 A CN201410807542 A CN 201410807542A CN 104557539 A CN104557539 A CN 104557539A
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- Prior art keywords
- methyl
- methyl acrylate
- tower
- small amount
- propionate
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- 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
- C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a method for separating methyl acrylate (MA) from methyl propionate (MP). The method comprises the following steps: washing a polymerization inhibitor hydroquinone by using an aqueous solution of sodium hydroxide, washing, drying, and performing reduced pressure distillation, thereby obtaining a product. The best choice is to remove a small amount of MP on a column at present, and a small amount of MP is adsorbed from MA by adopting an adsorption column. A two-tower alternative adsorption method is adopted, one tower is used for adsorbing, and the other tower is used for regenerating. According to the process method for separating methyl acrylate (MA) from methyl propionate (MP) provided by the invention, the methyl acrylate can be effectively purified, so that the purity of over 99 percent is achieved.
Description
Technical field
The invention discloses the separation method of a kind of methyl acrylate (MA) and methyl propionate (MP).
Background technology
Methyl acrylate (MA), as organic synthesis intermediate, is also the monomer of synthesising macromolecule copolymer, for rubber, medicine, leather, papermaking, tackiness agent etc.As one of important Elementary Chemical Industry raw material, vinylformic acid mainly for the production of the comonomer butyl acrylate of water soluble paint and tackiness agent and ethyl ester, and for the production of super absorbent resin.Wherein, aggregate demand 55% is accounted for for the production of acrylate.Glacial acrylic acid, for the production of super efficient water absorbent polymkeric substance (super absorbent resin, SAP), accounts for world demand amount about 32%, and washing composition polymkeric substance.Thickening material, dispersion agent and rheology control agent is used as on a small quantity for the production of polyacrylic ester.Along with the abundant of derived product and development, worldwide vinylformic acid throughput is also in continuous increase.
Summary of the invention
The separation method of a kind of methyl acrylate (MA) of the present invention and methyl propionate (MP), employing method is the hydroquinone of polymerization retarder first washing away the inside with the aqueous solution of sodium hydroxide, then washes, dry afterwards, then underpressure distillation obtains product; Crossing pillar, to remove a small amount of MP be selection best at present, adopts adsorption column to adsorb from MA and fall a small amount of MP; Adopt the method for two tower alternating sorbent, a tower adsorbs a tower regeneration.
(MA accounts for 70%, methyl alcohol 30% for described methyl acrylate and methanol azeotropic mixture (azeotropic point 62 DEG C).
It is mass ratio 53:47 seemingly that the azeotropic of described MA and methyl alcohol forms.
The positively effect that the present invention has is:
The separating process of a kind of methyl acrylate (MA) provided by the invention and methyl propionate (MP), methyl acrylate of can effectively purifying makes it reach the purity of more than 99%.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and be not used in restriction invention.
The separating process of a kind of methyl acrylate (MA) and methyl propionate (MP).Employing method is the hydroquinone of polymerization retarder first washing away the inside with the aqueous solution of sodium hydroxide, then washes, dry afterwards, then underpressure distillation obtains product; Crossing pillar, to remove a small amount of MP be selection best at present, adopts adsorption column to adsorb from MA and fall a small amount of MP; Adopt the method for two tower alternating sorbent, a tower adsorbs a tower regeneration.
(MA accounts for 70%, methyl alcohol 30% for described methyl acrylate and methanol azeotropic mixture (azeotropic point 62 DEG C).
It is mass ratio 53:47 seemingly that the azeotropic of described MA and methyl alcohol forms.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. methyl acrylate (MA) and a separation method for methyl propionate (MP), is characterized in that: employing method is the hydroquinone of polymerization retarder first washing away the inside with the aqueous solution of sodium hydroxide, then washes, dry afterwards, then underpressure distillation obtains product; Crossing pillar, to remove a small amount of MP be selection best at present, adopts adsorption column to adsorb from MA and fall a small amount of MP; Adopt the method for two tower alternating sorbent, a tower adsorbs a tower regeneration.
2. the separation method of a kind of methyl acrylate (MA) and methyl propionate (MP) according to claim 1, it is characterized in that, (MA accounts for 70%, methyl alcohol 30% for described methyl acrylate and methanol azeotropic mixture (azeotropic point 62 DEG C).
3. the separation method of a kind of methyl acrylate (MA) and methyl propionate (MP) according to claim 1, it is characterized in that, it is mass ratio 53:47 seemingly that the azeotropic of described MA and methyl alcohol forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410807542.XA CN104557539A (en) | 2014-12-23 | 2014-12-23 | Method for separating methyl acrylate (MA) from methyl propionate (MP) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410807542.XA CN104557539A (en) | 2014-12-23 | 2014-12-23 | Method for separating methyl acrylate (MA) from methyl propionate (MP) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104557539A true CN104557539A (en) | 2015-04-29 |
Family
ID=53074721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410807542.XA Pending CN104557539A (en) | 2014-12-23 | 2014-12-23 | Method for separating methyl acrylate (MA) from methyl propionate (MP) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104557539A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106699560A (en) * | 2015-11-18 | 2017-05-24 | 上海浦景化工技术股份有限公司 | Separation device and separation method of material flow containing methyl methacrylate |
| CN106938971A (en) * | 2016-12-20 | 2017-07-11 | 江苏常州酞青新材料科技有限公司 | A kind of methyl acrylate（MA）With methyl propionate（MP）Separation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996006066A1 (en) * | 1994-08-18 | 1996-02-29 | Shell Internationale Research Maatschappij B.V. | Process for preparing refined acrylic esters |
| CN1733687A (en) * | 2005-08-29 | 2006-02-15 | 上海华谊丙烯酸有限公司 | A (methyl) higher aliphatic acrylate preparation method |
| CN102796000A (en) * | 2011-05-26 | 2012-11-28 | 中国石油化工股份有限公司 | Method for preparing acrylate and/or methacrylate |
-
2014
- 2014-12-23 CN CN201410807542.XA patent/CN104557539A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996006066A1 (en) * | 1994-08-18 | 1996-02-29 | Shell Internationale Research Maatschappij B.V. | Process for preparing refined acrylic esters |
| CN1733687A (en) * | 2005-08-29 | 2006-02-15 | 上海华谊丙烯酸有限公司 | A (methyl) higher aliphatic acrylate preparation method |
| CN102796000A (en) * | 2011-05-26 | 2012-11-28 | 中国石油化工股份有限公司 | Method for preparing acrylate and/or methacrylate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106699560A (en) * | 2015-11-18 | 2017-05-24 | 上海浦景化工技术股份有限公司 | Separation device and separation method of material flow containing methyl methacrylate |
| CN106699560B (en) * | 2015-11-18 | 2020-08-14 | 上海浦景化工技术股份有限公司 | Separation equipment and separation method for methyl methacrylate-containing material flow |
| CN106938971A (en) * | 2016-12-20 | 2017-07-11 | 江苏常州酞青新材料科技有限公司 | A kind of methyl acrylate（MA）With methyl propionate（MP）Separation method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |