Combined technological process for producing lube oil base stock

A technology of lubricating base oil and combined process, which is applied in the petroleum industry, hydrotreating process, processing hydrocarbon oil, etc., can solve the problems of increasing energy consumption and operating costs, increasing equipment investment, reducing reaction efficiency, etc., and reducing construction costs. Investment and operating costs, low operating costs, the effect of simplifying the process

Active Publication Date: 2008-12-31
CHINA PETROLEUM & CHEM CORP +1
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  • Description
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Problems solved by technology

However, the hydrocracking products are not separated by distillation, and all lubricating oil components and light products enter the hydrodewaxing and supplementary refining units, which greatly reduces their reaction efficiency and increases energy consumption and operating costs.
Moreover, an adsorption unit must be added to achieve the purpose of producing lubricating oil in a process, which increases the equipment investment and makes the process more complicated

Method used

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  • Combined technological process for producing lube oil base stock

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0033] The catalysts in Table 2 were used in the hydrocracking reaction zone of Examples 1-3, and the FC-26 hydrocracking catalyst was used as the hydrocracking catalyst in Example 4. The hydroisomerization catalysts listed in Table 2 were used in the hydroisomerization reaction zones of Examples 1-4. The materials listed in Table 1 were processed. The hydrogen in the hydroisomerization dewaxing unit passes through once, and the tail hydrogen is used as supplementary hydrogen for hydrocracking. The results obtained are shown in Table 3. The hydrocracking and hydrorefining catalysts are vulcanized by conventional methods, followed by hydrocracking reactions, and the hydroisomerization and supplementary refining catalysts are reduced by conventional methods, followed by isomerization or refining reactions.

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Abstract

The invention discloses a production method of lubricating oil basic oil. The method takes distillate oil or refined oil, etc. as raw materials, and adopts the combined process of hydrogen cracking-isomerization dewaxing to produce the lubricating oil basic oil. The tail oil of a hydrogen cracking unit is directly supplied to a tail oil isomerization dewaxing unit for serving as a raw material, the new hydrogen passes through the tail oil isomerization dewaxing unit at a time, and the tail hydrogen directly returns to the hydrogen cracking unit for serving as compensation hydrogen. Only one hydrogen circulation system is arranged due to the deep combination of the two units, the construction investment of apparatus and the operating cost are obviously reduced, and the product quality is somewhat improved.

Description

technical field [0001] The invention relates to a production method of lubricating oil base oil, in particular to a method for producing lubricating oil base oil by a combined process of hydrocracking and isomerization dewaxing. Background technique [0002] The traditional production of lubricating base oils is based on the solvent process, which mainly includes two steps: 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] Due to the deterioration of crude oil worldwide, the number of paraffinic crude oil suitable for the production of high viscosity index lubricating oil base oil by traditional technology is gradually decreasing. Therefore, the technology of producing lubricating oil by hydrogenation is developing very rapidly. Hydrogenation process refers to the process of producing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/00C10G73/02
Inventor 关明华全辉姚春雷刘平
Owner CHINA PETROLEUM & CHEM CORP
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