Hydrogenation method for producing low freezing point motor fuel from biological oil

A technology for bio-oil and motor fuel, which is used in the preparation of biological raw materials, liquid hydrocarbon mixtures, and the petroleum industry.

Active Publication Date: 2014-12-31
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

However, when producing low-condensing-point diesel fractions, it has the disadvantages of short catalyst operation period, etc.

Method used

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  • Hydrogenation method for producing low freezing point motor fuel from biological oil

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Embodiment Construction

[0024] The method of the present invention is specifically as follows: using one or several mixed oils in the biogrease as the raw material oil, under the hydrogenation operation condition, the raw material oil and hydrogen pass through the first stage reaction zone comprising at least two hydrogenation catalysts, The obtained hydrogenation product stream is separated in the high-pressure separator (abbreviated as high fraction) to recycle the gas obtained, and it can also go out of the system, and the obtained liquid fractionation is mixed with hydrogen and enters the second reactor containing a hydrogenation modification catalyst with isomerization performance. The reaction zone of the first stage, the gas obtained from the hydrogenation and upgrading stream separated by the high-pressure separator (referred to as high fraction) can be recycled, and it can also be discharged from the system, and the liquid fractionation can be used to obtain the following products: one of gas,...

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Abstract

The present invention relates to a hydrogenation method for producing a low freezing point motor fuel from a biological oil. The method is characterized in that a biological oil is adopted as a raw material oil; under a hydrogenation condition, the raw material oil and hydrogen are mixed, and pass through a first stage hydrogenation reaction zone; hydrogen-rich gas separated from a stream generated through hydrogenation is recycled; the separated liquid enters a second stage hydrogenation modification reaction zone; and sub-hydrogen gas separated from the oil generated through second stage hydrogenation is recycled, and the separated liquid product is subjected to fractionation to obtain naphtha and a low freezing point motor fuel. Compared with the method in the prior art, the method of the present invention has the following advantages that: a low freezing point motor fuel can be produced, activity stability of the catalyst can be ensured, and stable and long period device operation can be ensured.

Description

technical field [0001] The invention belongs to a production method of renewable energy, and relates to a hydrogenation method, in particular to a hydrogenation method for directly producing low-freezing-point motor fuel by using biological oil as raw material oil. Background technique [0002] At present, the energy on a global scale mainly comes from fossil energy, among which petroleum is the most important source of motor fuel. Petroleum is a non-renewable energy source. Not only are the resources increasingly depleted, but also the quality and inferiority are intensifying. The continuous development of the world economy and increasingly stringent environmental protection regulations require the production of a large amount of light and clean fuels, which require the existing refining technology to be improved and improved. While improving, add new petroleum substitutes to produce products that meet the requirements at the lowest cost, especially the development and util...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G3/00
CPCY02P30/20
Inventor 刘涛乔迎超李宝忠张学辉王志武
Owner CHINA PETROLEUM & CHEM CORP
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