Hydrogenation method for production of low-condensation point motor fuel from biolipid

A technology for bio-oil and motor fuel, which is applied in the preparation of bio-fuel, bio-raw material and liquid hydrocarbon mixture, etc., can solve the problem of short catalyst operation cycle and achieve the effect of lowering the freezing point

Active Publication Date: 2015-06-17
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 production of low-condensation point motor fuel from biolipid

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Embodiment Construction

[0024]The method of the present invention is specifically as follows: one or several mixed oils in the bio-grease are used as the raw material oil, and under the hydrogenation operation condition, the raw material oil and hydrogen are reacted in the first stage of hydrogenation through the low-temperature operation of loading the catalyst and the high-temperature operation zone, the obtained hydrogenated oil is recycled in the high-pressure separator (abbreviated as high fraction), and the gas obtained by separating it can also be discharged from the system, and the obtained liquid fractionation is mixed with hydrogen and enters the second hydrogenation reforming catalyst containing 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 use...

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Abstract

The invention relates to a hydrogenation method for production of a low-condensation point motor fuel from biolipid. The method comprises the following steps that: biolipid is used as raw oil, and the raw oil and hydrogen pass through a first-stage hydrogenation reaction zone under hydrogenation operation conditions, wherein the first-stage hydrogenation reaction zone comprises at least two hydrogenation reactors, and the raw oil and hydrogen pass through one reactor operated at a low temperature at first and then pass through the other reactor operated at a high temperature; a material flow generated in hydrogenation is separated, obtained hydrogen-rich gas is recycled, and obtained liquid enters into a second-stage hydro-upgrading reaction zone; and a material flow generated in hydro-upgrading is separated, obtained side hydrogen is recycled, and an obtained liquid product is subjected to fractionation so as to obtain naphtha and low-condensation point diesel oil, wherein a sulfur-containing substance is supplemented to reaction materials so as to maintain the content of hydrogen sulfide in circulation gas. Compared with the prior art, the method provided by the invention can produce the low-condensation point motor fuel while guaranteeing activity stability of a catalyst and long-period stable running of an apparatus.

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, new oil substitutes are added to produce products that meet the requirements at the lowest cost. [0003] As a renewable resource, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G3/00
CPCY02E50/10Y02P30/20
Inventor 刘涛刘继华李宝忠曾榕辉白振民关明华
Owner CHINA PETROLEUM & CHEM CORP
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