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Method for preparing light olefin by adopting biolipid

A technology of bio-oil and low-carbon olefins, which is applied in the preparation of liquid hydrocarbon mixtures, biological raw materials, hydrocarbon cracking, etc., can solve the problems of low yield of low-carbon olefins, and achieve simple operation process, wide application range of raw materials, easy-to-achieve effects

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the low yield of low-carbon olefins in the existing method of using bio-oils to prepare low-carbon olefins. A new method for preparing low-carbon olefins using bio-oils is provided. According to the method, Obtain low carbon olefins with higher yield

Method used

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  • Method for preparing light olefin by adopting biolipid
  • Method for preparing light olefin by adopting biolipid
  • Method for preparing light olefin by adopting biolipid

Examples

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Embodiment 1

[0040] This example is used to illustrate the method for preparing low-carbon olefins from bio-oil provided by the present invention.

[0041] Such as figure 1 Shown, make palm oil (the content of unsaturated fatty acid ester and unsaturated fatty acid is 44.5% by weight) and the mixture of hydrogen with 10h -1 The volume space velocity passes through the fixed-bed reactor (the filling amount of the hydrogenation catalyst is 30g, and the nickel oxide of 3% by weight, the cobalt oxide of 0.08% by weight, the tungsten oxide of 8% by weight and the tungsten oxide of 88.92% by weight are contained in this hydrogenation catalyst Silica carrier), at a temperature of 200°C and a pressure of 2MPa, the hydrogenation reaction is carried out, and the volume ratio of hydrogen to the palm oil is 70Nm 3 / m 3 . Separate the fat phase from the reaction product, and make the fat phase with 6h -1 The volume space velocity enters the moving bed reactor (the filling capacity of the catalytic ...

Embodiment 2

[0043] This example is used to illustrate the method for preparing low-carbon olefins from bio-oil provided by the present invention.

[0044] The method according to embodiment 1 adopts biogrease to prepare light olefins, the difference is that the heavy oil separated from the reaction product of the moving bed reactor is not returned to the moving bed reactor for further catalytic cracking reaction, so The obtained ethylene yield, propylene yield, butene yield and the total yield of ethylene+propylene+butene are shown in Table 1 below.

Embodiment 3

[0050] This example is used to illustrate the method for preparing low-carbon olefins from bio-oil provided by the present invention.

[0051] Such as figure 1 Shown, make the mixture of rapeseed oil (the content of unsaturated fatty acid ester and unsaturated fatty acid is 90% by weight) and hydrogen with 5h -1 The volume space velocity passes through the fixed-bed reactor (the filling amount of hydrogenation catalyst is 30g, contains the nickel oxide of 4% by weight, the cobalt oxide of 0.1% by weight, the tungsten oxide of 5% by weight, the tungsten oxide of 5% by weight in this hydrogenation catalyst Molybdenum oxide and 85.9% by weight of alumina carrier), at a temperature of 150 ° C, a pressure of 5MPa to carry out hydrogenation reaction, the volume ratio of hydrogen to the palm oil is 50Nm 3 / m 3 . Separate the fat phase from the reaction product, and make the fat phase with 0.2h -1 The volume space velocity enters the moving bed reactor (the filling capacity of the...

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Abstract

The invention relates to a method for preparing a light olefin by adopting biolipid. The method comprises: (1) under a hydrogenation reaction condition, carrying out a reaction of a mixed material comprising biolipid and hydrogen in the presence of a hydrogenation catalyst in a hydrogenation reactor, and separating the oil phase from the reaction products; (2) under a catalytic cracking condition, carrying out a reaction of the resulting oil phase from the step (1) in the presence of a catalytic cracking catalyst in a catalytic cracking reactor, and separating the resulting reaction mixture to obtain the light olefin, light oil and heavy oil, wherein the resulting oil phase from the step (1) is adopted as the catalytic cracking raw material. The used biolipid contains an unsaturated fatty acid ester and / or an unsaturated fatty acid. With the method of the present invention, the yield of the light olefin can be significantly improved.

Description

technical field [0001] The invention relates to a method for preparing low-carbon olefins by using biological oil. Background technique [0002] At present, the production of light olefins in the world is mainly based on tube furnace steam cracking method with light petroleum hydrocarbon as raw material and catalytic cracking method with heavy petroleum hydrocarbon as raw material. Petroleum hydrocarbon is a non-renewable resource. According to statistics, according to the current exploitation level, the world's proven petroleum hydrocarbon resources can only be exploited for about 80 years. With the massive consumption of petroleum hydrocarbon resources, the reserves are decreasing day by day, and the quality of petroleum continues to deteriorate and become heavier. Using renewable bio-oil as an alternative resource for petroleum hydrocarbons to produce low-carbon olefins will be a beneficial supplement to the current production methods of low-carbon olefins. . [0003] C...

Claims

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Application Information

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IPC IPC(8): C07C11/04C07C11/06C07C11/08C07C4/06C10G3/00
CPCY02P20/52Y02P30/20
Inventor 宋宝梅谢朝钢李正张久顺杨超
Owner CHINA PETROLEUM & CHEM CORP
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