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Method for producing base oil from synthetic gas

A technology for base oil and synthesis gas, which is applied in the field of diesel oil and lubricating oil base oil, hydrocarbons obtained by Fischer-Tropsch synthesis, and naphtha production. rate increases, lower capital and operating costs, and improved product composition

Active Publication Date: 2014-08-06
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0009] The purpose of this invention is to provide a kind of method that produces lubricating oil base oil and byproduct diesel oil and naphtha by hydrogen and carbon monoxide. thermal difficulties and hot spots, and provides a method for producing lube base oils that maximizes the characteristics of the hydrocarbons produced by the process

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  • Method for producing base oil from synthetic gas

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Embodiment

[0054] The preparation process of the Fischer-Tropsch synthesis catalyst used in the examples is as follows: take aluminum oxide powder, add distilled water dropwise to incipient wetness, record the volume of consumed water, and then calculate according to the Co content (oxide basis) 27% by weight, prepare the Cobalt nitrate impregnation solution. Then impregnate alumina with this solution to incipient wetness, let it stand for 8 hours, then dry it at 120°C for 4 hours, and bake it in a muffle furnace at 450°C for 4 hours to prepare the catalyst. The particle size range of the obtained cobalt-based Fischer-Tropsch synthesis catalyst is 1.2-1.6 mm.

[0055] There are 300 reaction tubes in the Fischer-Tropsch synthesis tubular fixed bed reactor. The reaction tubes are made of austenitic stainless steel pipes with an outer diameter of 38 mm and a wall thickness of 3 mm. The groove has a depth of 1.2mm, an average groove width of 0.6mm, and a helix angle of 4°.

[0056] Fischer...

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Abstract

The invention provides a method for producing base oil from synthetic gas. The method comprises the following steps: allowing synthetic gas to enter a tubular fixed bed reactor and contact with a catalyst for a Fischer-Tropsch synthesis reaction, wherein the interior surface of a reaction tube is smooth, and the exterior surface of the reaction tube has a groove; allowing heavy hydrocarbon and light hydrocarbon in a synthetic product to enter a hydrorefining reactor for reactions and separating out naphtha, diesel oil and wax-containing lubricating oil; and allowing wax-containing lubricating oil to successively enter an isomerization-visbreaking reactor and the hydrorefining reactor for reactions so as to prepare lubricant base oil. The method provided by the invention overcomes the problems of hardly controllable reaction heat and difficult heat transfer and hot spots of a reactor during the Fischer-Tropsch synthesis reaction and realizes maximum production of the base oil directed at the characteristic that hydrocarbons are produced in the process of production.

Description

technical field [0001] The present invention relates to a process for the production of lubricating oil base oils from synthesis gas (hydrogen and carbon monoxide), more specifically, a hydrocarbon obtained by a Fischer-Tropsch synthesis reaction, followed by multiple hydrotreating processes to produce naphtha Method for oil, diesel and lube base stocks. Background technique [0002] Hydrogen and carbon monoxide are used as raw materials to obtain hydrocarbon products through Fischer-Tropsch synthesis (Fischer-Tropsch synthesis), and then through hydrotreating process to obtain liquid fuels such as gasoline, aviation kerosene, diesel oil and other chemical raw materials such as naphtha, lubricating oil Oil base oil, wax, etc. Since hydrogen and carbon monoxide can be easily converted from coal, natural gas, shale gas, coal bed methane, and biomass, this technology path has attracted great attention from the world's energy and chemical industries. Many international energy co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G2/00C10G67/02
Inventor 徐润胡志海聂红吴昊李猛田鹏程
Owner CHINA PETROLEUM & CHEM CORP
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