Aromatization catalyst and applications thereof

Abstract

The invention discloses an aromatization catalyst and applications thereof, and aims at solving the problems such as low yield of benzene and mixed xylene in the liquid outcomes and the like during the existing hydrocarbon aromatization reaction. The catalyst comprises the following components by weight percentage of 30-90wt% of molecular sieves, 0-60wt% of carriers and 10-20 wt% of adhesives, wherein the molecular sieves are mixtures of a molecular sieve I, a molecular sieve II, a molecular sieve III and a molecular sieve IV; the molecular sieve I is at least one modified HZSM-5 molecular sieve out of modified elements zinc, gallium and lanthanum; the molecular sieve II is at least one modified HZSM-5 molecular sieve out of modified elements bismuth, molybdenum, silver, copper, zirconiumand rhenium; the molecular sieve III is the HZSM-5 molecular sieve formed by modifying polysiloxane; and the molecular sieve IV is a modified hydrogenated mercerization type molecular sieve, a modified hydrogenated Beta-type molecular sieve, a hydrogenated ZSM-11 molecular sieve and a hydrogenated MCM-22 molecular or mixtures thereof.

Description

technical field [0001] The invention relates to a catalyst for the production of high-quality aromatic products by aromatization of hydrocarbons, especially suitable for C in liquefied gas 3 ~C 5 The process of aromatizing olefins at a lower temperature to produce high-quality aromatics and high-octane gasoline rich in non-benzene aromatics. [0002] The invention also relates to the application of the above-mentioned catalyst in producing aromatic hydrocarbons and high-octane gasoline by aromatization of hydrocarbons. Background technique [0003] With the implementation of my country's "West-to-East Gas Transmission" plan and civil natural gas pipeline projects, the already surplus liquefied gas LPG in refineries has been further backlogged, especially the amount of carbon tetraolefins contained in it is less than 50%, and refineries The existence of high content of olefins in liquefied gas affects the production of liquefied gas for vehicles (the QJ / DSH712-1999 standard ...

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to provide an aromatization catalyst to solve the problems in the prior art that the yield of benzene and mixed xylenes in the aromatization product is low, especially the low yield of mixed xylenes, etc.

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