CN106631721A - Polyoxymethylene dimethyl ether synthesis device - Google Patents
Polyoxymethylene dimethyl ether synthesis device Download PDFInfo
- Publication number
- CN106631721A CN106631721A CN201611007341.7A CN201611007341A CN106631721A CN 106631721 A CN106631721 A CN 106631721A CN 201611007341 A CN201611007341 A CN 201611007341A CN 106631721 A CN106631721 A CN 106631721A
- Authority
- CN
- China
- Prior art keywords
- dissolving tank
- polymer reactor
- dimethyl ether
- polymerization reactor
- communicating pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/48—Preparation of compounds having groups
- C07C41/50—Preparation of compounds having groups by reactions producing groups
- C07C41/56—Preparation of compounds having groups by reactions producing groups by condensation of aldehydes, paraformaldehyde, or ketones
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polyethers (AREA)
Abstract
The invention discloses a polyoxymethylene dimethyl ether synthesis device. The synthesis device comprises a dissolving tank A and a dissolving tank B, wherein the upper end of the dissolving tank A is provided with a methylal feed port and a first alpha-polyformaldehyde feed port, and the bottom is provided with a discharge port; one side of the dissolving tank A is provided with a first polymerization reactor and a second polymerization reactor of which the tops communicate with each other; the bottom of the first polymerization reactor communicates with the bottom of the dissolving tank A through a first communicating pipe and is provided with a first high-pressure pump; the dissolving tank B is arranged at one side of the second polymerization reactor; the bottom of the second polymerization reactor communicates with the top of the dissolving tank B; the top of the dissolving tank B is further provided with a second alpha-polyformaldehyde feed port; one side of the dissolving tank B is provided with a third polymerization reactor and a fourth polymerization reactor of which the tops communicate with each other; the bottom of the third polymerization reactor communicates with the bottom of the dissolving tank B through a second communicating pipe and is provided with a second high-pressure pump; and the bottom of the fourth polymerization reactor is provided with a polyoxymethylene dimethyl ether discharge pipeline. According to the invention, the problems of high viscosity and unideal distribution during addition of alpha-polyformaldehyde are solved, and the N value of the product is controllable.
Description
Technical field
The present invention relates to chemical industry synthesis field, is exactly a kind of synthesizer of polymethoxy dimethyl ether.
Background technology
Polymethoxy dimethyl ether, also known as polyoxymethylene dimethyl ether, polyoxymethylene dimethyl ethers, polymethoxy methylal, are one
The common name of class material, its skeleton symbol can be expressed as：CH3O(CH2O)nCH3(wherein, n >=1, general value is less than 10, with DMMn
Represent).
α-polyoxymethylene weight is big, and course of dissolution viscosity is excessive, make general stirring do cannot normal work, the product of polymerization
Abnormal, viscosity is big when in the world existing synthesizer can not meet α-polyformaldehyde synthesis polymethoxy dimethyl ether, makes product point
Cloth is unreasonable, the bad control of N values.
The content of the invention
It is an object of the invention to provide a kind of synthesizer of polymethoxy dimethyl ether, solves α-polyformaldehyde and synthesizes poly- first
Viscosity is big during epoxide dimethyl ether is distributed undesirable, the uncontrollable problem of N values.
Technical scheme is as follows：
Polymethoxy dimethyl ether synthesizer, including dissolving tank A, dissolving tank B, dissolving tank A upper ends be provided with dimethoxym ethane charging aperture, α-
Polyformaldehyde charging aperture one, bottom is provided with outlet；
Dissolving tank A sides are provided with the first polymer reactor, second polymer reactor of top mutually UNICOM, the first polymer reactor
Bottom inlet, by being connected communicating pipe one, is provided with the first high-pressure pump with dissolving tank A outlet at bottoms on communicating pipe one；
Second polymer reactor side is provided with dissolving tank B, the second polymer reactor bottom and dissolving tank B tops reactant liquor import phase
Connection, dissolving tank B tops are additionally provided with α-polyformaldehyde charging aperture two；
Dissolving tank B sides are provided with third polymerization reactor, the 4th polymer reactor that top is connected, third polymerization reactor bottom
Portion, by being connected communicating pipe two, is provided with the second high-pressure pump with dissolving tank B bottoms on communicating pipe two；
4th polymer reactor bottom is provided with polymethoxy dimethyl ether discharge pipe.
Described polymethoxy dimethyl ether synthesizer, it is characterised in that described the first polymer reactor, the second polymerization
Catalyst is filled with reactor, third polymerization reactor, the 4th polymer reactor, catalyst adopts resin cation.
Described polymethoxy dimethyl ether synthesizer, it is characterised in that the second described polymer reactor bottom with it is molten
The first safety valve is respectively equipped with the top of solution tank B on the connecting pipe of reactant liquor import, the 4th polymer reactor bottom discharge pipeline
Door, the second safety valve.
Beneficial effects of the present invention are：
Present configuration is novel in design, can by α-polyformaldehyde synthesis polymethoxy dimethyl ether when, dimethoxym ethane and α-polyformaldehyde Jing
Crossing dissolving tank A carries out mixing depolymerization, then coordinates the first polymer reactor, the second polymer reactor primary first-order equation, and dissolving tank B holds two
Secondary to add secondary α-polyformaldehyde, Jing third polymerization reactors, the 4th polymer reactor secondary response again efficiently solves α-polyformaldehyde
Plus the big distribution of fashionable viscosity is undesirable, the finished product N values of product are controllable.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Specific embodiment
Polymethoxy dimethyl ether synthesizer, including dissolving tank A, dissolving tank B, dissolving tank A upper ends are provided with dimethoxym ethane charging
Mouth 1, α-polyformaldehyde charging aperture 1, bottom is provided with outlet；
Dissolving tank A sides are provided with the first polymer reactor 3, second polymer reactor 4 of top mutually UNICOM, the first polymerisation
The bottom inlet of device 3, by being connected communicating pipe 1, is provided with the first high-pressure pump 6 with dissolving tank A outlet at bottoms on communicating pipe 1；
The side of second polymer reactor 4 is provided with dissolving tank B, the bottom of the second polymer reactor 4 and dissolving tank B top reactant liquor imports
It is connected, dissolving tank B tops are additionally provided with α-polyformaldehyde charging aperture 27；
Dissolving tank B sides are provided with third polymerization reactor 8, the 4th polymer reactor 9 that top is connected, third polymerization reactor
8 bottoms, by being connected communicating pipe 2 10, are provided with the second high-pressure pump 11 with dissolving tank B bottoms on communicating pipe 2 10；
The bottom of 4th polymer reactor 9 is provided with polymethoxy dimethyl ether discharge pipe 12.
Filling in first polymer reactor 3, the second polymer reactor 4, third polymerization reactor 8, the 4th polymer reactor 9
There is catalyst 13, catalyst adopts resin cation.
The bottom of second polymer reactor 4 and connecting pipe, the 4th polymer reactor bottom of dissolving tank B top reactant liquor imports
The first safety-valve 14, the second safety valve 15 are respectively equipped with portion's discharge pipe.
Claims (3)
1. a kind of polymethoxy dimethyl ether synthesizer, including dissolving tank A, dissolving tank B, dissolving tank A upper ends are provided with dimethoxym ethane and enter
Material mouth, α-polyformaldehyde charging aperture one, bottom is provided with outlet；
Dissolving tank A sides are provided with the first polymer reactor, second polymer reactor of top mutually UNICOM, the first polymer reactor
Bottom inlet, by being connected communicating pipe one, is provided with the first high-pressure pump with dissolving tank A outlet at bottoms on communicating pipe one；
Second polymer reactor side is provided with dissolving tank B, the second polymer reactor bottom and dissolving tank B tops reactant liquor import phase
Connection, dissolving tank B tops are additionally provided with α-polyformaldehyde charging aperture two；
Dissolving tank B sides are provided with third polymerization reactor, the 4th polymer reactor that top is connected, third polymerization reactor bottom
Portion, by being connected communicating pipe two, is provided with the second high-pressure pump with dissolving tank B bottoms on communicating pipe two；
4th polymer reactor bottom is provided with polymethoxy dimethyl ether discharge pipe.
2. polymethoxy dimethyl ether synthesizer according to claim 1, it is characterised in that the first described polymerisation
Be filled with catalyst in device, the second polymer reactor, third polymerization reactor, the 4th polymer reactor, catalyst using sun from
Subtree fat.
3. polymethoxy dimethyl ether synthesizer according to claim 1, it is characterised in that the second described polymerisation
It is respectively equipped with the connecting pipe of device bottom and dissolving tank B top reactant liquor import, the 4th polymer reactor bottom discharge pipeline
First safety-valve, the second safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611007341.7A CN106631721A (en) | 2016-11-16 | 2016-11-16 | Polyoxymethylene dimethyl ether synthesis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611007341.7A CN106631721A (en) | 2016-11-16 | 2016-11-16 | Polyoxymethylene dimethyl ether synthesis device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106631721A true CN106631721A (en) | 2017-05-10 |
Family
ID=58806965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611007341.7A Pending CN106631721A (en) | 2016-11-16 | 2016-11-16 | Polyoxymethylene dimethyl ether synthesis device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106631721A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104610026A (en) * | 2015-02-04 | 2015-05-13 | 中国科学院兰州化学物理研究所苏州研究院 | Method and system for producing polyoxymethylene dimethyl ethers (DMMn) through dual reactor |
| CN104926627A (en) * | 2014-12-26 | 2015-09-23 | 北京东方红升新能源应用技术研究院有限公司 | Continuous reaction device for synthetizing polymethoxy dimethyl ether |
| CN104974025A (en) * | 2014-04-11 | 2015-10-14 | 清华大学 | Polymethoxyl dimethyl ether production method |
-
2016
- 2016-11-16 CN CN201611007341.7A patent/CN106631721A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104974025A (en) * | 2014-04-11 | 2015-10-14 | 清华大学 | Polymethoxyl dimethyl ether production method |
| CN104926627A (en) * | 2014-12-26 | 2015-09-23 | 北京东方红升新能源应用技术研究院有限公司 | Continuous reaction device for synthetizing polymethoxy dimethyl ether |
| CN104610026A (en) * | 2015-02-04 | 2015-05-13 | 中国科学院兰州化学物理研究所苏州研究院 | Method and system for producing polyoxymethylene dimethyl ethers (DMMn) through dual reactor |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
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| RJ01 | Rejection of invention patent application after publication |