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Dimethyl ether carbonylation method, application thereof and reaction equipment for dimethyl ether carbonylation

A dimethyl ether and carbonylation technology, which is applied in the field of dimethyl ether carbonylation and its use and reaction equipment, can solve the problems of high maintenance cost and low production efficiency, and achieve the effect of reducing maintenance cost and improving production efficiency

Inactive Publication Date: 2017-12-29
SINOPEC ENG GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The first object of the present invention is to provide a method for the carbonylation of dimethyl ether, so as to alleviate the technical problems of low production efficiency and high maintenance cost caused by regeneration of the catalyst in the carbonylation of dimethyl ether in the prior art

Method used

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  • Dimethyl ether carbonylation method, application thereof and reaction equipment for dimethyl ether carbonylation

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Embodiment 1

[0060] This embodiment is a method for the carbonylation of dimethyl ether, which includes the following steps: feed the reaction raw materials dimethyl ether, carbon monoxide and hydrogen into the reactor at a space velocity of 2000ml / (g·h), and modify the catalyst-pyridine The dimethyl ether carbonylation reaction is carried out under the action of the hierarchically porous hydrogen-type mordenite molecular sieve, the reaction temperature is 160° C., and the reaction pressure is 3.0 MPa. Among them, the molar ratio of dimethyl ether to carbon monoxide is 1:2, and the molar ratio of hydrogen to carbon monoxide is 1:1. After the reaction is finished, the catalyst is separated from the reaction product, and the separated catalyst is regenerated outside the reactor and then passed into the reactor for reaction. The separated reaction product is sequentially passed through a condenser and a gas-liquid separator to obtain methyl acetate.

Embodiment 2

[0062] The present embodiment is a method for the carbonylation of dimethyl ether. Compared with Example 1, the difference is that the space velocity of feeding dimethyl ether, carbon monoxide and hydrogen is 2500ml / (g h), and all the other are the same as those in Example 1. 1 is the same.

Embodiment 3

[0064] The present embodiment is a method for the carbonylation of dimethyl ether. Compared with Example 1, the difference is that the space velocity of feeding dimethyl ether, carbon monoxide and hydrogen is 3000ml / (g h), and the rest are the same as those in the embodiment. 1 is the same.

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Abstract

The invention provides a dimethyl ether carbonylation method, application thereof and reaction equipment for dimethyl ether carbonylation, and relates to the technical field of methyl acetate preparation from dimethyl ether. The dimethyl ether carbonylation method comprises the following steps: introducing reaction raw materials such as dimethyl ether, carbon monoxide and hydrogen into a reactor, carrying out a dimethyl ether carbonylation reaction under the action of a catalyst, then separating the catalyst from a reaction product, carrying out regeneration treatment on the separated catalyst outside the reactor, and then introducing into the reactor for reaction. By using the method, the technical problems such as low production efficiency and high maintenance cost caused by regeneration treatment of the catalyst in the dimethyl ether carbonylation reaction in the prior art can be relieved, and the technical effects of improving the production efficiency and reducing the cost are reached.

Description

technical field [0001] The invention relates to the technical field of preparing methyl acetate by utilizing dimethyl ether, in particular to a method for carbonylation of dimethyl ether and its application and reaction equipment. Background technique [0002] In view of my country's energy status of "rich coal, poor oil and little gas", and the production of ethanol by fermentation may lead to a situation of "competing with others for food", it is urgent to develop a large-scale production of ethanol technology with coal as raw material to ensure my country's energy and food security. At present, the technical route of synthesis gas → methanol → dimethyl ether → methyl acetate → ethanol has attracted the attention of many researchers. In this technical route, only the carbonylation of dimethyl ether to prepare methyl acetate has not been industrialized, and the rest of the steps It has been applied on a large scale industrially. This process is an emerging coal-to-ethanol ...

Claims

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Application Information

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IPC IPC(8): C07C69/14C07C67/37B01J29/90B01J38/06B01J38/02B01J38/08
CPCB01J29/90B01J38/02B01J38/06B01J38/08C07C67/37C07C69/14Y02P20/584
Inventor 韩海波李康刘丹禾魏小波李治郝代军
Owner SINOPEC ENG GRP CO LTD
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