A gas demister for acetylene hydrogenation to ethylene slurry bed

A technology of acetylene hydrogenation and demister, which is applied in the direction of hydrogenation hydrocarbon production, chemical instruments and methods, separation methods, etc., can solve the problems of single function and complex structure, and achieve high defoaming efficiency, small volume and simple structure Effect

Active Publication Date: 2019-02-12
北京锦泰诚瑞科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defects of complex structure and single function in the gas demister in the prior art, the present invention provides a gas demister with catalytic function

Method used

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  • A gas demister for acetylene hydrogenation to ethylene slurry bed
  • A gas demister for acetylene hydrogenation to ethylene slurry bed

Examples

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Embodiment 1

[0030] This embodiment relates to a gas demister according to the present invention, its structure is as follows figure 2 :

[0031] The demister is a hard wire mesh with a mesh number of 20, and a catalyst layer with a thickness of 0.5 μm-20 μm is provided on the surface of the hard wire mesh;

[0032] The catalyst active ingredient in the catalyst layer is metal palladium particles;

[0033] The particle size of the active ingredient of the catalyst is 50-100nm;

[0034] The weight percent of the catalyst active ingredient in the catalyst layer is 0.05%

[0035] The carrier of the active component of the catalyst in the catalyst layer is α-Al 2 o 3 ;

[0036] The material of the hard screen is polytetrafluoroethylene;

[0037] The hard screen is composed of three screen modules.

Embodiment 2

[0039] This embodiment relates to the ethylene slurry bed comprising the gas demister of the present invention, such as figure 1 As shown, it includes a wire mesh support block 1 installed on the inner wall 5 of the reactor, and the wire mesh module 3 fixes the wire mesh on the wire mesh support block 1 through wire mesh fixing bolts 2 . The mesh number of the screen block is 15 meshes; the number of the screen modules is 3; the screen support block 1 is movably connected with the screen module 3 . The wire mesh module 3 is made of high-strength polytetrafluoroethylene.

[0040] When the gas with mist enters the upper part of the reactor from the solvent level 6 of the reactor, and rises through the screen module 3 at a certain speed, due to the inertia of the mist rising, the mist collides with the screen block and is attached on the screen surface. The diffusion of the mist on the surface of the fine mesh and the gravity settlement of the mist are the formation of larger d...

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Abstract

The invention relates to a gas demister of a slurry bed for hydrogenation of acetylene to ethylene. The demister is a hard wire mesh with the mesh number of 10-20, and a catalyst layer with the thickness of 0.5 mu m-20 mu m. By means of the catalyst layer arranged on the hard wire mesh, the demister not only prevents volatile components of solvents from evolving, but converts micro acetylene in reaction products completely, accordingly the conversion rate of catalytic reaction is greatly increased. In addition, the demister is simple in structure, small in size and high in demisting efficiency. A wire mesh block is detachable and easy to mount, operate, repair and clean. In the meantime, the wire mesh block is made of high-strength polytetrafluoroethylene, wear-resistant nylon 66 and polypropylene, thus the wire mesh is corrosion and high temperature resistant, the service life is prolonged, and costs are reduced.

Description

technical field [0001] The invention belongs to the field of chemical equipment and equipment manufacturing, in particular to a discharge gas demister for acetylene hydrogenation to ethylene slurry bed. Background technique [0002] With the depletion of petroleum resources, the development of coal chemical industry as a raw material chemical process has become an important process to replace the petrochemical route, which has attracted widespread attention and achieved rapid development. [0003] In coal chemical technology, the production of acetylene by using coal as raw material through calcium carbide process has been widely used. Using acetylene as raw material under the action of selective hydrogenation catalyst to produce ethylene products through hydrogenation can further expand the route of coal chemical industry. Moreover, in recent years, the supply of polyvinyl chloride (PVC), the main downstream product of acetylene, has exceeded demand, and the PVC industry is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/02B01D45/08C07C5/09C07C11/04
CPCB01D45/08B01J8/009B01J8/02B01J8/025B01J8/0292B01J2208/0084C07C5/09C07C11/04
Inventor 车中山史雪君吴黎阳吴道洪
Owner 北京锦泰诚瑞科技发展有限公司
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