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Hydrogenation method for producing high-quality diesel oil

A diesel, high-quality technology, applied in the field of renewable energy processing, can solve the problem of short operation cycle and achieve the effect of reducing the freezing point

Active Publication Date: 2013-10-30
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

At the same time, when producing low-condensing-point diesel fractions, there are also disadvantages such as short operating periods due to the impact of catalyst activity.

Method used

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  • Hydrogenation method for producing high-quality diesel oil

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Embodiment Construction

[0027] The method of the present invention is specifically as follows: using one or several mixed oils in the bio-grease as the raw material oil, under the hydrogenation operation conditions, the raw material oil and hydrogen pass through the first reaction zone containing at least two hydrogenation catalysts to obtain The hydrogenation product stream is recycled in the gas separated by the high-pressure separator, and the liquid fraction obtained from the system can also be used; the liquid fraction in the first reaction zone, diesel feedstock and hydrogen are mixed into the second reaction zone containing hydrofining , the obtained hydrorefining product stream continues to pass through the third reaction zone containing a hydrogenation-upgrading catalyst with isomerization performance, and the obtained hydro-upgrading product stream is separated in the high-pressure separator for recycling, and can also be discharged from the system , Liquid fractionation to obtain the follow...

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Abstract

The invention relates to a hydrogenation method for producing high-quality diesel oil. The hydrogenation method comprises the steps that firstly, under the condition of hydrogenation, biolipid and recycle hydrogen are mixed and pass through a hydrotreating reaction zone, the gas obtained by separating a hydrotreating generated material flow is recycled, the liquid obtained by separation, the raw diesel oil and the recycle hydrogen are mixed and pass through a hydrofining reaction zone and then enter a hydro-upgrading reaction zone at least comprising hydrogenation catalysts with isomerization performance, and the liquid obtained by separating a hydro-upgrading generated material flow is continuously fractionated, thus obtaining naphtha and low-condensation-point diesel oil products, wherein in the reaction state, the hydrogenation active components of the hydrogenation catalysts used in the hydrotreating reaction zone are Pt and / or Pd in the reduction state. Compared with the prior art, the method has the advantages that not only can the storage stability of the biolipid as fuel oil be effectively improved but also the high-quality low-condensation-point clean diesel oil can be directly produced.

Description

technical field [0001] The invention belongs to a processing method of renewable energy, and relates to a hydrogenation method, in particular to a hydrogenation method for directly producing high-quality low-condensation-point diesel oil by using bio-oil and diesel fractions as raw material oil. Background technique [0002] At present, the world's energy mainly comes from fossil energy, mainly including coal and petroleum, and the fuel for motors used in vehicles mainly comes from petroleum. Fossil energy is a non-renewable energy source, and its resources are becoming increasingly depleted, while oil is becoming more and more heavy and inferior. With the continuous development of the world's economy, increasingly stringent environmental protection regulations, and higher and higher emission standards, the demand for light and clean fuels in various countries is very strong, all of which require oil companies and scientific research units to improve and improve the existing...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/02
Inventor 刘涛李宝忠单广波白振民韩照明曾榕辉
Owner CHINA PETROLEUM & CHEM CORP
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