Hydrogenation method for producing lubricant basic oil with low pour point and high viscosity index

A lubricating oil base oil, high viscosity technology, applied in lubricating composition, hydrotreating process, petroleum industry, etc., can solve the problems of high raw material requirements and high wax content of raw materials

Active Publication Date: 2014-03-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method has high requirements on raw materials and high wax content in raw materials, and is

Method used

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  • Hydrogenation method for producing lubricant basic oil with low pour point and high viscosity index
  • Hydrogenation method for producing lubricant basic oil with low pour point and high viscosity index
  • Hydrogenation method for producing lubricant basic oil with low pour point and high viscosity index

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Embodiment 1

[0084] The feed oil A is mixed with hydrogen and passes through the first hydrogenation reaction zone and the second hydrogenation reaction zone in sequence, the first hydrogenation reaction zone is filled with a hydrofinishing catalyst, and the second hydrogenation reaction zone is filled with a hydrocracking catalyst A. At a hydrogen partial pressure of 14.0MPa, the reaction temperature in the first hydrogenation reaction zone is 382°C, and the volume space velocity is 1.1h -1 , the reaction temperature in the second hydrogenation reaction zone is 390°C, and the volume space velocity is 1.4h -1 The reaction is carried out under certain conditions, and the reaction effluent in the second hydrogenation reaction zone is separated and fractionated to obtain hydrogen-rich gas I, naphtha fraction, kerosene fraction, diesel fraction, tail oil fraction and heavy tail oil fraction, and the obtained> The 510°C heavy tail oil fraction is all recycled back to the first hydrogenation rea...

Embodiment 2

[0087] The feed oil A is mixed with hydrogen and passes through the first hydrogenation reaction zone and the second hydrogenation reaction zone in sequence, the first hydrogenation reaction zone is filled with a hydrofinishing catalyst, and the second hydrogenation reaction zone is filled with a hydrocracking catalyst B. At a hydrogen partial pressure of 15.0MPa, the reaction temperature of the first hydrogenation reaction zone is 380°C, and the volume space velocity is 1.2h -1 , the reaction temperature in the second hydrogenation reaction zone is 392°C, and the volume space velocity is 1.5h -1 The reaction is carried out under certain conditions, and the reaction effluent in the second hydrogenation reaction zone is separated and fractionated to obtain hydrogen-rich gas I, naphtha fraction, kerosene fraction, diesel fraction, tail oil fraction and heavy tail oil fraction, and the obtained> The heavy tail oil fraction at 530°C is all recycled back to the first hydrogenation ...

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Abstract

The invention discloses a hydrogenation method for producing lubricant basic oil with a low pour point and a high viscosity index. The hydrogenation method comprises the following steps: mixing raw material oil with hydrogen gas, then transporting the mixing to a hydro-cracking reaction unit, subjecting the reaction product which flows out from the hydro-cracking reaction unit to processes of separation and fractionation, recycling the obtained heavy tail oil fraction, then adding the heavy tail oil fraction into the hydro-cracking reaction unit, mixing the obtained tail oil fraction with hydrogen gas, and then transporting the mixture to a hydro-isomerization and pour-point reducing reaction unit to carry out hydro-isomerization reactions, pouring point reducing reactions, and hydrogenation saturation reactions so as to obtain the lubricant basic oil. The invention solves the problem that the quality of the lubricant basic oil cannot stay stable because the raw material quality turns bad, provides a hydrogenation method which can stably produce lubricant basic oil with an ultrahigh viscosity index; the obtained product has a high tail oil viscosity index, which can reach 140 or more, furthermore, the product is rich in chain alkane and mono-cyclic alkane and is a lubricant basic oil with a high viscosity index.

Description

technical field [0001] The invention belongs to a method for obtaining lubricating oil base oil in the presence of hydrogen, more specifically, a hydrogenation method for producing high viscosity index lubricating oil base oil from inferior raw materials such as vacuum wax oil. Background technique [0002] Due to the replacement of engines, the requirements for the viscosity index and low-temperature fluidity of lubricating base oils are becoming more and more stringent. High-grade lubricating oils require base oils with better viscosity-temperature properties, more excellent oxidation stability and low-temperature fluidity. [0003] Viscosity index is an indicator of the viscosity of lubricating base oil changing with temperature. It is a value calculated by standard method through the kinematic viscosity of base oil at 40°C and 100°C. It is used to indicate the change of base oil viscosity with temperature. Performance, that is, viscosity-temperature performance. The vi...

Claims

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Application Information

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IPC IPC(8): C10G65/12C10M177/00
Inventor 董建伟王鲁强赵阳董松涛陈元君赵广乐蒋东红胡志海聂红
Owner CHINA PETROLEUM & CHEM CORP
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