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Reaction device and process for preparing ethylene through oxidative coupling of methane

A technology of oxidative coupling and reaction device, which is applied in organic chemistry, chemical recovery, chemical instruments and methods, etc., can solve the problem of too thick catalyst bed, and achieve the effects of avoiding repeated addition, increasing reaction efficiency, and facilitating circulation

Pending Publication Date: 2022-01-28
杨凡
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  • Application Information

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Problems solved by technology

[0006] In order to make up for the deficiencies of the prior art, to solve the problems of too thick a catalyst bed in the reaction of oxidative coupling of methane to ethylene, the influence on the reaction device and reaction efficiency, and the problem of fully reacting methane and oxygen, the present invention provides an oxidative coupling of methane Ethylene reaction device and its process

Method used

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  • Reaction device and process for preparing ethylene through oxidative coupling of methane
  • Reaction device and process for preparing ethylene through oxidative coupling of methane
  • Reaction device and process for preparing ethylene through oxidative coupling of methane

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Embodiment approach

[0038] As a specific embodiment of the present invention, the first air inlet 11 is fixedly installed on the bottom of the first reaction tank 1, and the second air inlet 12 is fixedly installed on the side wall of the first reaction tank 1 and is close to bottom part.

[0039] During work, the first air inlet 11 is fixedly installed on the bottom of the first reaction tank 1, and the second air inlet 12 is fixedly installed on the side wall of the first reaction tank 1 and a position near the bottom. The bottom of the first reaction tank 1 impacts, so that the methane and oxygen are evenly mixed at the bottom of the first reaction tank 1, and then pass through the gas distributor 13 to contact with the catalyst to make the reaction more complete and obtain ethylene with higher purity.

[0040] As a specific embodiment of the present invention, a fan blade 16 is arranged below the gas distributor 13, the blade end of the fan blade 16 is curved, and the fan blade 16 is rotatabl...

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Abstract

The invention belongs to the technical field of ethylene preparation, and particularly relates to a reaction device and process for preparing ethylene through oxidative coupling of methane. The reaction device comprises a first reaction tank, a cyclone separator, a cooler and a second reaction tank. According to the invention, methane and oxygen are introduced from a first gas inlet and a second gas inlet respectively, mixed gas blows a catalyst to rise, a reaction is carried out in the process, the solid of a gas-solid mixture enters a cooler under the action of a cyclone separator and flows through a first reaction tank to complete circulation so as to prevent the catalyst from being accumulated too thick, recycle the catalyst and avoid repeated addition of the catalyst, the separated gas enters a second reaction tank for secondary reaction so as to make the reaction more sufficient, and then the gas is exhausted through an exhaust pipe.

Description

technical field [0001] The invention belongs to the technical field of preparing ethylene, in particular to a methane oxidative coupling reaction device for preparing ethylene and a process thereof. Background technique [0002] Ethylene is the basic chemical raw material for synthetic fibers, synthetic rubber, synthetic plastics (polyethylene and polyvinyl chloride), synthetic ethanol (alcohol), and is also used to manufacture vinyl chloride, styrene, ethylene oxide, acetic acid, acetaldehyde and explosives etc. It can also be used as a ripening agent for fruits and vegetables. It is a proven plant hormone; ethylene is one of the largest chemical products in the world. The ethylene industry is the core of the petrochemical industry. Ethylene products account for More than 75%, occupies an important position in the national economy, the world has taken ethylene production as one of the important symbols to measure the development level of a country's petrochemical industry. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/02B01D45/12C07C2/84C07C11/04
CPCB01J8/02B01J8/0285B01D45/12C07C2/84C07C11/04Y02P20/584
Inventor 杨凡李磊
Owner 杨凡
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