Unlock instant, AI-driven research and patent intelligence for your innovation.

Reaction kettle for carbonyl synthesis of dimethyl carbonate by gas phase method

A technology of dimethyl carbonate and reactor, which is applied in the field of reactor for carbonylation of dimethyl carbonate by gas phase method, which can solve the problems of affecting reaction efficiency, short-term contact process, and increased demand, so as to increase the contact area and increase the reaction rate , the effect of improving efficiency

Pending Publication Date: 2022-07-15
上海蕙黔新材料科技有限公司
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As people pay more and more attention to environmental issues, all countries in the world have put forward higher requirements for the production of chemicals. The development of environmentally friendly green chemicals has become an inevitable trend of development. The demand for dimethyl carbonate as a substitute for phosgene is increasing. The gas-phase carbonylation of dimethyl carbonate is carried out in a reactor. The gas-phase carbonylation needs to fully mix the gas phase and liquid phase substances. However, in the existing reactor, the gas phase and the liquid phase are mainly sprayed. The contact process is short, resulting in incomplete mixing and affecting the reaction efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reaction kettle for carbonyl synthesis of dimethyl carbonate by gas phase method
  • Reaction kettle for carbonyl synthesis of dimethyl carbonate by gas phase method
  • Reaction kettle for carbonyl synthesis of dimethyl carbonate by gas phase method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] refer to Figure 1-7 , a reaction kettle for gas phase oxo synthesis of dimethyl carbonate, comprising a support 1, a kettle body 3 is fixedly installed on the top of the support 1, and a reaction kettle head 9 is fixedly installed on the top of the kettle body 3, and the reaction kettle seals A drive motor 10 is installed on the top of the head 9, a transmission rod 7 is installed in the interior of the kettle body 3, and the top of the transmission rod 7 is connected with the output shaft of the drive motor 10 in a driving manner, and a discharge pipe 17 is installed at the bottom of the kettle body 3 respectively. And the circulation pipe, and the bottom of the circulation pipe is equipped with a circulation pump 2, a reflux mechanism 11 is installed between the output shaft of the circulation pump 2 and the reaction kettle head 9, a feeding pipe 13 is installed on the side of the kettle body 3, and the reaction kettle is sealed. The inner wall of the head 9 is equip...

Embodiment 2

[0040] refer to Figure 1-6 and Figure 8 , a kind of reaction kettle for gas-phase oxo synthesis of dimethyl carbonate, this embodiment is relative to Example 1, other structures are unchanged, the stirring mechanism 16 includes a second stirring member 1621, and the second stirring member 1621 One side of the 1621 is provided with a second compression chamber 1622 with a C-shaped structure, the bottom of the other side of the second stirring member 1621 is provided with an inclined surface, and the inner wall of the second compression chamber 1622 is provided with an upper dispersion groove 1623 and The cross sections of the lower dispersion tank 1624, the upper dispersion tank 1623 and the lower dispersion tank 1624 are all trapezoidal structures. When the second stirring member 1621 moves forward, the solution is compressed by the second compression chamber 1622 and passes through the upper dispersion tank at the inclined surface. 1623 and the lower dispersion tank 1624 f...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a reaction kettle for carbonyl synthesis of dimethyl carbonate by a gas phase method, and relates to the technical field of reaction kettles. The reaction kettle specifically comprises a support, a kettle body is fixedly installed at the top of the support, a reaction kettle sealing head is fixedly installed at the top of the kettle body, a driving motor is installed at the top of the reaction kettle sealing head, a transmission rod is rotationally installed in the kettle body, and the top of the transmission rod is in transmission connection with an output shaft of the driving motor. The stirring mechanism and the turning and stirring mechanism are arranged at the bottom of the liquid phase, the stirring mechanism generates displacement when encountering the magnetic guiding mechanism during rapid rotation, the direction and density of shearing and stirring the solution are changed, and the reaction rate between the gas phase and the liquid phase is effectively increased through mutual alternate change; compressed liquid flow is generated at the tail end of the reaction kettle and impacts the bottom wall of the reaction kettle to drive a solution at the bottom to quickly move and turn, so that the contact area between a gas phase and a liquid phase is further increased, and the synthesis rate is increased.

Description

technical field [0001] The invention relates to the technical field of reaction kettles, in particular to a reaction kettle for synthesizing dimethyl carbonate by gas phase method. Background technique [0002] Dimethyl carbonate is a chemical raw material with low toxicity, excellent environmental protection performance and wide application. It is an important intermediate in organic synthesis. Its molecular structure contains functional groups such as carbonyl, methyl and methoxy, and has a variety of reactions. performance, in production, it has the characteristics of safe use, convenience, less pollution, and easy transportation. Although phosgene has high reactivity, its highly toxic and highly corrosive by-products face huge environmental pressures, so it will gradually Dimethyl carbonate has a similar nucleophilic reaction center. When the carbonyl group of dimethyl carbonate is attacked by nucleophiles, the acyl-oxygen bond is broken to form a carbonyl compound, and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/18B01J19/00B01J4/00C07C68/01C07C69/96
CPCB01J19/18B01J19/0053B01J19/0066B01J4/002C07C68/01C07C69/96Y02P20/141
Inventor 刘炎唐大川单文波肖招金汪俊倪菁华
Owner 上海蕙黔新材料科技有限公司