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Method and system for treating catalytic cracking gasoline and catalytic cracking process and device for increasing yield of xylene

A catalytic cracking and catalytic cracking technology, which is applied in the fields of hydrotreating process, hydrocarbon oil treatment, hydrocarbon oil treatment products, etc., can solve the problems of high catalyst requirements, harsh reaction conditions, complicated operation, etc.

Pending Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] From the technology disclosed in the above patent application, it can be seen that the existing heavy aromatics lightening technology mostly adopts the method of fixed bed hydrodealkylation, the reaction conditions are harsh, the operation is complicated, and the catalyst requirements are high

Method used

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  • Method and system for treating catalytic cracking gasoline and catalytic cracking process and device for increasing yield of xylene
  • Method and system for treating catalytic cracking gasoline and catalytic cracking process and device for increasing yield of xylene
  • Method and system for treating catalytic cracking gasoline and catalytic cracking process and device for increasing yield of xylene

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preparation Embodiment 1

[0088] The preparation method of C4: mix aluminum sol with kaolin, and use decationized water to prepare it into a slurry with a solid content of 10-50% by weight, stir evenly, and use inorganic salts such as hydrochloric acid, nitric acid, phosphoric acid or sulfuric acid. 1 to 4, keep the pH value, stand and age at 20 to 80°C for 0 to 2 hours, then add aluminum sol, stir for 0.5 to 1.5 hours to form a colloid, add Y-type molecular sieve (produced by Changling Catalyst Factory) to form a catalyst slurry (solid content is 35% by weight), continue to stir and then spray dry to make a microsphere catalyst, wherein Y: kaolin: aluminum sol = 40:39:21. Then the microsphere catalyst was calcined at 500° C. for 1 hour, and washed with ammonium sulfate at 60° C. (wherein, ammonium sulfate: microsphere catalyst: water=0.5:1:10) to a sodium oxide content of less than 0.25% by weight, followed by Rinse with deionized water and filter, and then dry at 110° C., which is the carrier C4 of t...

preparation Embodiment 2

[0091] Using C4 as a carrier, a presulfided catalyst H2 was prepared by a pore saturation impregnation method, wherein the weight ratio of NiS was 10% (based on the total weight of the catalyst).

preparation Embodiment 3

[0093] The preparation method of C3: mix aluminum sol with kaolin, and prepare it into a slurry with a solid content of 10-50% by weight with decationized water, stir evenly, and adjust the pH of the slurry to 1 to 4, keep the pH value, put aluminum sol at 20-80°C for 0-2 hours, then add aluminum sol, stir for 0.5-1.5 hours to form a colloid, add ZSM-5 molecular sieve and Y-type molecular sieve (produced by Changling Catalyst Factory ) to form a catalyst slurry (solid content is 35% by weight), continue to stir and spray dry to make a microsphere catalyst, wherein ZSM-5: Y: kaolin: aluminum sol=20:20:39:21. Then the microsphere catalyst was calcined at 500° C. for 1 hour, and washed with ammonium sulfate at 60° C. (wherein, ammonium sulfate: microsphere catalyst: water=0.5:1:10) to a sodium oxide content of less than 0.25% by weight, followed by Rinse with deionized water and filter, and then dry at 110° C., which is the carrier C3 of this embodiment.

[0094] Catalyst H3 was...

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Abstract

The invention relates to a method and a system for treating catalytic cracking gasoline, and a catalytic cracking process and a catalytic cracking device for increasing the yield of xylene. The method and the system provided by the invention can efficiently convert the catalytic cracking gasoline into low-carbon olefin and light aromatic hydrocarbon, produce more xylene, have the advantages of continuous reaction and continuous regeneration, good heat transfer and mass transfer effects, uniform temperature distribution during heating and cooling, low investment and the like, can maintain the property of the catalyst constant, and can ensure long-period stable operation.

Description

technical field [0001] The invention relates to a method and system for processing catalytic cracking gasoline, and a catalytic cracking process and device for producing more xylene. Background technique [0002] BTX (benzene, toluene, xylene) is an important petrochemical basic product, and is an important raw material for various chemical products such as synthetic rubber, synthetic fiber, and synthetic resin. Toluene and xylene can also be used as gasoline octane additives. Driven by the continuous pull of China's polyester, polyester and PTA industries, the growth of the global aromatics industry chain is concentrated in Northeast Asia, and the demand for triphenyl continues to rise. However, the aromatics production process is accompanied by the production of C9+ heavy aromatics. At present, the output of C9+ heavy aromatics is large, the value is low, and the utilization channels are limited, resulting in a waste of resources. It is undoubtedly a good idea to convert C...

Claims

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Application Information

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IPC IPC(8): C10G69/00C07C4/06C07C11/02C07C15/02C07C15/08
CPCC07C4/06C10G69/00C10G2300/1037C10G2300/104C10G2300/1044C10G2300/70C10G2400/02C10G2400/20C10G2400/30C07C11/02C07C15/02C07C15/08Y02P20/52Y02P20/584
Inventor 王迪魏晓丽龚剑洪于敬川张久顺
Owner CHINA PETROLEUM & CHEM CORP
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