Hydroisomerization catalyst and its preparation method and Fischer-Tropsch synthesis wax modification method for producing lubricating oil base oil

A technology for hydroisomerization and catalyst, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as product yield decline
CN109701612BActive Publication Date: 2020-10-27CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2020-10-27

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Abstract

The invention relates to the field of modifying Fischer-Tropsch synthetic wax and particularly relates to a hydroisomerization catalyst, a preparation method thereof, and a method of modifying Fischer-Tropsch synthetic wax for producing lubricant base oil. The catalyst comprises a supporter and an active metal component supported by the supporter. The supporter contains a ten-membered silicon-aluminum molecular sieve, of which the molar ratio of silicon oxide to aluminum oxide is 120-300. The supporter has mesoporous structure; a closed hysteresis loop exists at the position P / P0 = 0.4-0.99 ona low temperature nitrogen adsorption-desorption curve, the start position of the closed hysteresis loop being at the position P / P0 = 0.4-0.7. The hydroisomerization catalyst is used for modifying Fischer-Tropsch synthetic wax for producing lubricant base oil, wherein a target product has high viscosity index, low pour point, and high yield.
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Description

technical field

[0001] The invention relates to the field of Fischer-Tropsch synthesis wax modification, in particular to a hydroisomerization catalyst and a preparation method thereof, and a method for producing lubricating oil base oil through modification of Fischer-Tropsch synthesis wax. Background technique

[0002] Raw materials rich in long-chain alkanes mainly include hydrocracking tail oil, vegetable oil, Fischer-Tropsch synthetic wax and waste lubricating oil, etc., which have high freezing points and poor low-temperature fluidity. As the ambient temperature decreases, the fluidity of the oil will deteriorate, or even solidify, thereby blocking the container and pipeline and interrupting the oil supply to the engine. At present, there are many methods to solve various problems caused by low freezing point of waxy oil, mainly including solvent dewaxing, catalytic dewaxing and isomerization dewaxing.

[0003] Solvent dewaxing is to use the solvent properties of wax ...

Claims

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