Catalyst for yield increases of BTX (benzene, toluene and xylol) aromatic hydrocarbons and trimethylbenzene through hydrocracking heavy aromatic hydrocarbons

A technology for BTX aromatics and hydrocracking, which is applied in the direction of molecular sieve catalysts, physical/chemical process catalysts, hydrocarbons, etc., and can solve the problems of long trimethylbenzene monomer flow, difficult separation, and insufficient removal capacity.
CN102744098AActive Publication Date: 2012-10-24CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2012-10-24

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Abstract

The invention relates to a catalyst for the yield increases of BTX aromatic hydrocarbons and trimethylbenzene through hydrocracking heavy aromatic hydrocarbons to mainly solve technical problems of insufficient capability of present hydrotreatment catalysts for removing C9 aromatic hydrocarbons except the trimethylbenzene from the heavy aromatic hydrocarbons with low added values, and long flow, difficult separation and high cost in rectification separation of trimethylbenzene monomers from products. According to the invention, hydrogen type binder-free ten-membered ring zeolite loading 0.005-0.5 parts by mass of Pt or Pd is adopted as the catalyst, so the catalyst well solves the problems, and can be used for the industrial production for the yield increases of the BTX aromatic hydrocarbons and the trimethylbenzene with a high added value through hydrocracking the heavy aromatic hydrocarbons.
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Description

technical field

[0001] The invention relates to a catalyst for increasing the production of BTX aromatics and trimethylbenzene by hydrocracking heavy aromatics. Background technique

[0002] Heavy aromatics include by-products of carbon nine and above aromatics in steam cracking units and refinery continuous reforming units, which are valuable petrochemical resources, especially reforming heavy aromatics. With the successive production of continuous reforming units in large petrochemical enterprises in my country in recent years, the output of reformed heavy aromatics has increased rapidly. In the production of xylene (PX), a considerable part of it enters the production plant for the comprehensive utilization of heavy aromatics for processing and application, and is used to extract components such as mesitylene, p-trimethylbenzene, para-trimethylbenzene, and methylethylbenzene.

[0003] Foreign countries have started to use this part of resources to produce fine chemical pr...

Claims

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