CN106938971A - A kind of methyl acrylate（MA）With methyl propionate（MP）Separation method - Google Patents
A kind of methyl acrylate（MA）With methyl propionate（MP）Separation method Download PDFInfo
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- CN106938971A CN106938971A CN201611182384.9A CN201611182384A CN106938971A CN 106938971 A CN106938971 A CN 106938971A CN 201611182384 A CN201611182384 A CN 201611182384A CN 106938971 A CN106938971 A CN 106938971A
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- Prior art keywords
- methyl acrylate
- methyl
- separation method
- tower
- small amount
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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
Abstract
Invention describes a kind of methyl acrylate（MA）With methyl propionate（MP）Separation method.It is the hydroquinone of polymerization retarder that the inside is first washed away with the aqueous solution of NaOH using method, then washes, dry afterwards, then vacuum distillation obtains product；It is selection best at present to cross pillar and remove a small amount of MP, is adsorbed using adsorption column from MA and falls a small amount of MP；Using the method for two tower alternating sorbents, a tower adsorbs tower regeneration.A kind of methyl acrylate that the present invention is provided（MA）With methyl propionate（MP）Separating process, can effectively purify the purity that methyl acrylate reaches more than 99%.
Description
Technical field
The invention discloses a kind of methyl acrylate（MA）With methyl propionate（MP）Separation method.
Background technology
Methyl acrylate（MA）Be also the monomer of synthesising macromolecule copolymer as organic synthesis intermediate, for rubber,
Medicine, leather, papermaking, adhesive etc..As one of important Elementary Chemical Industry raw material, acrylic acid applies mainly for the production of water solubility
The comonomer butyl acrylate and ethyl ester of material and adhesive, and for producing super absorbent resin.Wherein, for producing
Acrylate accounts for aggregate demand 55%.Glacial acrylic acid is used to produce super efficient water absorbent polymer（Super absorbent resin, SAP）,
Account for world demand amount about 32%, and detergent polymer.It is a small amount of be used to producing polyacrylate as thickener, dispersant and
Rheology control agent.With the abundant and development of downstream product, worldwide propylene acid production ability is also being continuously increased.
The content of the invention
A kind of methyl acrylate of the present invention（MA）With methyl propionate（MP）Separation method, be first to use hydroxide using method
The aqueous solution of sodium washes away the hydroquinone of polymerization retarder of the inside, then washes, dries afterwards, then vacuum distillation obtains product；Cross post
It is selection best at present that son, which removes a small amount of MP, is adsorbed using adsorption column from MA and falls a small amount of MP；Using two towers
The method of alternating sorbent a, tower adsorbs tower regeneration.
The methyl acrylate and methanol azeotropic mixture（62 DEG C of azeotropic point）（MA accounts for 70%, methanol 30%.
The azeotropic composition of the MA and methanol are mass ratio 53 seemingly:47.
The good effect that the present invention has is：A kind of methyl acrylate that the present invention is provided（MA）With methyl propionate（MP）
Separating process, can effectively purify the purity that methyl acrylate reaches more than 99%.
Embodiment
In order that the object of the invention, technical scheme and advantage are more clearly understood, with reference to embodiments, the present invention is entered
Row is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, limit is not used to
Fixed invention.
A kind of methyl acrylate（MA）With methyl propionate（MP）Separating process.It is first to use NaOH using method
The aqueous solution wash away the hydroquinone of polymerization retarder of the inside, then wash, dry afterwards, then vacuum distillation obtains product；Cross pillar
It is selection best at present to remove a small amount of MP, is adsorbed using adsorption column from MA and falls a small amount of MP；Handed over using two towers
For the method for absorption, a tower adsorbs tower regeneration.
The methyl acrylate and methanol azeotropic mixture（62 DEG C of azeotropic point）（MA accounts for 70%, methanol 30%.
The azeotropic composition of the MA and methanol are mass ratio 53 seemingly:47.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, all essences in the present invention
Any modification, equivalent and improvement made within refreshing and principle etc., should be included within the scope of the present invention.
Claims (3)
1. a kind of methyl acrylate（MA）With methyl propionate（MP）Separation method, it is characterised in that：It is first to use hydrogen using method
The aqueous solution of sodium oxide molybdena washes away the hydroquinone of polymerization retarder of the inside, then washes, dries afterwards, then vacuum distillation obtains product；
It is selection best at present to cross pillar and remove a small amount of MP, is adsorbed using adsorption column from MA and falls a small amount of MP；Using
The method of two tower alternating sorbents a, tower adsorbs tower regeneration.
2. a kind of methyl acrylate according to claim 1（MA）With methyl propionate（MP）Separation method, its feature exists
In the methyl acrylate and methanol azeotropic mixture（62 DEG C of azeotropic point）（MA accounts for 70%, methanol 30%.
3. a kind of methyl acrylate according to claim 1（MA）With methyl propionate（MP）Separation method, its feature exists
In the azeotropic composition of the MA and methanol are mass ratio 53 seemingly:47.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611182384.9A CN106938971A (en) | 2016-12-20 | 2016-12-20 | A kind of methyl acrylate（MA）With methyl propionate（MP）Separation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611182384.9A CN106938971A (en) | 2016-12-20 | 2016-12-20 | A kind of methyl acrylate（MA）With methyl propionate（MP）Separation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106938971A true CN106938971A (en) | 2017-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611182384.9A Pending CN106938971A (en) | 2016-12-20 | 2016-12-20 | A kind of methyl acrylate（MA）With methyl propionate（MP）Separation method |
Country Status (1)
| Country | Link |
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| CN (1) | CN106938971A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046518A (en) * | 1989-03-31 | 1990-10-31 | 三井东压化学株式会社 | The purification of methyl methacrylate and preparation method |
| CN103524345A (en) * | 2013-10-23 | 2014-01-22 | 上海浦景化工技术有限公司 | Product separation process for preparing methyl acrylate from methyl acetate |
| CN104557539A (en) * | 2014-12-23 | 2015-04-29 | 安徽助成信息科技有限公司 | Method for separating methyl acrylate (MA) from methyl propionate (MP) |
-
2016
- 2016-12-20 CN CN201611182384.9A patent/CN106938971A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046518A (en) * | 1989-03-31 | 1990-10-31 | 三井东压化学株式会社 | The purification of methyl methacrylate and preparation method |
| CN103524345A (en) * | 2013-10-23 | 2014-01-22 | 上海浦景化工技术有限公司 | Product separation process for preparing methyl acrylate from methyl acetate |
| CN104557539A (en) * | 2014-12-23 | 2015-04-29 | 安徽助成信息科技有限公司 | Method for separating methyl acrylate (MA) from methyl propionate (MP) |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170711 |