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Production method for high-viscosity index lubricant base oil

A technology for lubricating base oil and production method, which is applied in the directions of lubricating composition, petroleum industry, treatment of hydrocarbon oil, etc., can solve the problems of increasing investment in equipment construction, unqualified products, increasing the difficulty of operation of equipment, etc., so as to reduce unqualified products. the number, the reduction of construction investment and the effect of

Inactive Publication Date: 2013-05-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0007] Using narrow fraction waxy oil as the feed method of hydroisomerization dewaxing can solve the method of producing light and heavy high viscosity index lubricating oil base oil, but it needs to set up multiple raw material tanks and increase the construction investment of the device; Moreover, in actual production, it is necessary to frequently switch raw materials and frequently adjust process parameters, which greatly increases the difficulty of device operation and produces a large number of substandard products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~3

[0033] Examples 1 to 5, the raw materials are respectively 2 kinds of raw materials listed in Table 1; the raw materials are respectively added with 5 kinds of wax substances in Table 2 and then directly carry out the hydroisomerization dewaxing reaction, and the product is fractionated to obtain a light base oil product and heavy base oil products. The catalysts listed in Table 2 were used for hydroisomerization dewaxing, and the results obtained are shown in Table 4. The hydroisomerization catalyst is reduced by a conventional method and then implemented. The vacuum distillation tower after the hydroisomerization dewaxing reaction is provided with two side lines to produce No. 4 and No. 6 base oils, and No. 10 base oil products are produced at the bottom of the tower. The split point of light lubricating oil base oil and heavy lubricating oil base oil is controlled at 420°C and 470°C.

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Abstract

The invention relates to a production method for high-viscosity index lubricant base oil. According to the method, wax-bearing oil needing no pre-fractionation is used as a feed for hydrogenation isodewaxing, a viscosity index of the feed is increased by adding wax substance into the feed, so the purpose of producing APIIII lubricant base oil with a viscosity index of more than 120 and of a variety of viscosity grades is achieved. Compared with the prior art, the method provided by the invention has the following advantages: lubricant base oil with a high viscosity index and of a variety of viscosity grades can be obtained, and the method is simple and easily practicable.

Description

technical field [0001] The invention relates to a production method of high viscosity index lubricating oil base oil. Specifically, a wide-cut waxy oil is directly used as a feedstock for hydroisomerization dewaxing to produce high-quality API III lubricating oil base oil. Background technique [0002] Traditional lubricating base oil production is based on solvent refining process, the two main steps are to use solvent refining to remove non-ideal components such as aromatics and solvent dewaxing to ensure the low temperature fluidity of the base oil. In addition, white clay or hydrogenation supplementary refining is generally carried out. [0003] The increasingly stringent environmental regulations and the rapid development of the machinery industry have put forward higher and higher requirements on the performance of lubricating base oils. At the same time, due to the deterioration of crude oil worldwide, the amount of crude oil suitable for lubricating oil production ...

Claims

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Application Information

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IPC IPC(8): C10G67/02C10M177/00
Inventor 关明华全辉张志银赵威林振发
Owner CHINA PETROLEUM & CHEM CORP
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