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Method for selective hydrogenation of pyrolysis gasoline

A pyrolysis gasoline and selective hydrogenation technology, which is applied in the petroleum industry, refining hydrocarbon oil, etc., can solve the problems of loss of active metal components, high friction of catalyst particles, and difficult processing of metal mesh, so as to improve catalytic performance and equipment The effect of small size and easy filling

Active Publication Date: 2015-03-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the friction between the catalyst particles is large, which is easy to wear a

Method used

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  • Method for selective hydrogenation of pyrolysis gasoline
  • Method for selective hydrogenation of pyrolysis gasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The metal catalyst A was ground into a fine powder, and sieved to obtain a catalyst powder with a particle size of 100 mesh. Select a polypropylene plastic rope with a diameter of 1.5 mm and place it in the powder of the metal catalyst A, mold it with a flat vulcanizer at a temperature of 200 ° C and a pressure of 7 MPa for 10 min, take it out and cool it, and obtain a metal-polymer catalyst, called is the metal-polymer catalyst E.

[0065] The metal-polymer catalyst E is densely wound to form a ring-shaped integral catalyst inner part, and the metal-polymer catalyst is fixed on the rotor of the high-gravity rotating bed reactor. The integral catalyst inner part and the rotor are connected by bolts, and the metal-polymer Catalyst E can move together with the high-speed rotating rotor of the hypergravity reactor.

Embodiment 2

[0067]The metal catalyst B was ground into a fine powder, and sieved to obtain a catalyst powder with a particle size of 100 mesh. Select a polypropylene plastic rope with a diameter of 1.5 mm and place it in the powder of the metal catalyst B, mold it with a flat vulcanizer at a temperature of 200 ° C and a pressure of 7 MPa for 10 min, take it out and cool it, and obtain a metal-polymer catalyst, called is the metal-polymer catalyst F.

[0068] The metal-polymer catalyst F is densely wound to make a ring-shaped monolithic catalyst inner part, and the metal-polymer catalyst is fixed on the rotor of the high-gravity rotating bed reactor. The monolithic catalyst inner part and the rotor are connected by bolts, and the metal-polymer Catalyst F can move together with the high-speed rotating rotor of the hypergravity reactor.

Embodiment 3

[0070] The metal catalyst C was ground into a fine powder and sieved to obtain a catalyst powder with a particle size of 80 mesh. Select 10-mesh nylon-6 wire mesh and place it in the powder of metal catalyst C, mold it with a flat vulcanizer at a temperature of 250°C and a pressure of 7 MPa for 10 minutes, take it out and cool it, and then obtain a metal-polymer catalyst, which is called metal catalyst C. - polymer catalyst G.

[0071] The metal-polymer catalyst G is compacted to form a net-like monolithic catalyst internal, and the metal-polymer catalyst is fixed on the rotor of the high-gravity rotating bed reactor. The monolithic catalyst internal and the rotor are connected by bolts, and the metal-polymer Catalyst G can move together with the high-speed rotating rotor of the hypergravity reactor.

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Abstract

The invention discloses a method for selective hydrogenation of pyrolysis gasoline. The method comprises the following steps: fixing a metal-polymer catalyst on a rotor of a rotating packed bed reactor to form a compact catalyst bed layer; enabling pyrolysis gasoline and hydrogen to pass through the rotating catalyst bed layer in a countercurrent or co-current flow manner; and performing selective hydrogenation reaction on unsaturated hydrocarbon on a metal-polymer catalyst under a high gravity field. The catalyst disclosed by the invention is almost free of acidity on the surface, and has relatively high catalytic performance; the packed bed reactor has the advantages of good mass transfer performance and heat transfer performance, small volume, low investment cost, large processing capacity and good operation elasticity; meanwhile, the waste catalyst disclosed by the invention is relatively convenient to recycle; and a high-molecular polymer can be removed by heating a catalyst to certain temperature, thus the metal active components are recycled, and the requirements of the economic society on environmental protection are met.

Description

technical field [0001] The invention relates to the field of pyrolysis gasoline, and more particularly relates to a method for selective hydrogenation of pyrolysis gasoline. Background technique [0002] Pyrolysis gasoline is a general term for the liquid by-products C5-C9 fractions produced during the cracking of light oil to produce ethylene and propylene. The composition of pyrolysis gasoline is very complex, mainly including aromatics (including benzene, toluene, xylene), monoolefins, diolefins, linear alkanes, cycloalkanes, and organic compounds of nitrogen, sulfur, oxygen, chlorine and heavy metals. Depending on the cracking raw material and cracking depth, the output of pyrolysis gasoline accounts for more than 50wt% of the ethylene production capacity. The content of aromatics in pyrolysis gasoline is about 50-80wt%, and the content of unsaturated hydrocarbons is about 25-30%. In industrial production, it mainly cuts C6-C8 fractions, removes highly unsaturated hydr...

Claims

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Application Information

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IPC IPC(8): C10G45/66
CPCC10G45/66
Inventor 戴伟蒋海斌易水生张晓红乔金樑彭晖鲁树亮
Owner CHINA PETROLEUM & CHEM CORP
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