Normal olefin isomerization catalyst and its preparation method and application

An olefin isomerization and catalyst technology, which is applied in the field of normal olefin isomerization catalyst and its preparation, can solve the problems of easy performance decline, performance decline and high cost, so as to reduce other side reactions, reduce the quantity and maintain the yield Effect
CN106040293BActive Publication Date: 2018-11-16山东迅达化工集团有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
山东迅达化工集团有限公司
Publication Date
2018-11-16

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Abstract

The invention provides an n-alkene isomerization catalyst. The n-alkene isomerization catalyst comprises (by weight) 50-90% of molecular sieves and the balance aluminum oxide. The molecular sieves comprise (by weight) 75-90% of SAPO-11 and 10-25% of ZSM-5; the sizes of micro-particles of the molecular sieves in the n-alkene isomerization catalyst are 1-2 micrometers. The n-alkene isomerization catalyst has the advantages that the n-alkene isomerization catalyst is high in n-alkene isomerization activity and isoalkene yield, and the high isoalkene yield can be kept for a long time; the n-alkene isomerization catalyst is long in single-pass running period, low in repeated coke-burning regeneration performance decreasing range, suitable for procedures for preparing isobutylene from n-butene by means of isomerization reaction and procedures for preparing isopentene from n-pentene by means of isomerization reaction and particularly suitable for procedures for preparing isobutylene by means of post-ether carbon tetra-n-butene isomerization.
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Description

Technical field

[0001] The invention belongs to the field of catalysts, and relates to a normal olefin isomerization catalyst and a preparation method and application thereof. Background technique

[0002] Methyl tertiary butyl ether (MTBE) has high octane number and low vapor pressure in newly formulated gasoline and oxygenated gasoline, and has good solubility in gasoline distillate hydrocarbons, so it becomes an excellent gasoline additive group. In recent years, its demand has increased rapidly, and the output of isobutylene obtained from traditional petroleum catalytic cracking and thermal processing is far from meeting the needs of etherification plant production.

[0003] After separating methanol and ether, the export material of the etherification device for producing MTBE has a normal butene content of more than 40%. Therefore, the skeletal isomerization of the normal butene-rich material to produce isobutene can achieve the purpose of increasing the production of isobute...

Claims

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