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A method for Fischer-Tropsch synthetic oil hydrogenation upgrading

A Fischer-Tropsch synthetic oil and hydro-upgrading technology is applied in the field of Fischer-Tropsch synthetic oil hydro-upgrading and Fischer-Tropsch synthetic oil hydro-upgrading to produce middle distillate oil, which can solve the problem of low selectivity and yield of middle distillate oil. The problem is not high, and the effect of improving selectivity, high diesel yield and flexible product scheme can be achieved.

Active Publication Date: 2019-09-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of low selectivity and low yield of middle distillates in the prior art, and provide a new method for producing middle distillates by hydrotreating Fischer-Tropsch synthetic oil

Method used

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  • A method for Fischer-Tropsch synthetic oil hydrogenation upgrading
  • A method for Fischer-Tropsch synthetic oil hydrogenation upgrading
  • A method for Fischer-Tropsch synthetic oil hydrogenation upgrading

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Embodiment 1

[0076] This embodiment is used to illustrate the method for hydrotreating and upgrading Fischer-Tropsch synthetic oil of the present invention, specifically as follows:

[0077] The whole fraction of Fischer-Tropsch synthetic oil enters the hydrofinishing reactor, and successively contacts and reacts with the hydrogenation protection catalyst and the hydrofinishing catalyst, and the hydrofinishing reaction effluent enters the separation and fractionation system for separation and fractionation to obtain the first naphtha fraction, Light diesel fraction and heavy oil fraction. Among them, the heavy oil fraction enters the isomerization hydrocracking reactor, contacts and reacts with the isomerization hydrocracking catalyst and the post-refining catalyst, and the isomerization hydrocracking reaction effluent enters the separation and fractionation system for separation and fractionation to obtain the second naphtha Distillate, middle distillate and tail oil fraction, wherein, 4 ...

Embodiment 2

[0080] This embodiment is used to illustrate the method for hydrotreating and upgrading Fischer-Tropsch synthetic oil of the present invention, specifically as follows:

[0081] The whole fraction of Fischer-Tropsch synthetic oil enters the hydrofinishing reactor, and successively contacts and reacts with the hydrogenation protection catalyst and the hydrofinishing catalyst, and the hydrofinishing reaction effluent enters the separation and fractionation system for separation and fractionation to obtain the first naphtha fraction, Light diesel fraction and heavy oil fraction. Among them, the heavy oil fraction enters the isomerization hydrocracking reactor, contacts and reacts with the isomerization hydrocracking catalyst and the post-refining catalyst, and the isomerization hydrocracking reaction effluent enters the separation and fractionation system for separation and fractionation to obtain the second naphtha Distillate, middle distillate and tail oil fraction, wherein, 4 ...

Embodiment 3

[0084] This embodiment is used to illustrate the method for hydrotreating and upgrading Fischer-Tropsch synthetic oil of the present invention, specifically as follows:

[0085] The whole fraction of Fischer-Tropsch synthetic oil enters the hydrofinishing reactor, and successively contacts and reacts with the hydrogenation protection catalyst and the hydrofinishing catalyst, and the hydrofinishing reaction effluent enters the separation and fractionation system for separation and fractionation to obtain the first naphtha fraction, Light diesel fraction and heavy oil fraction. Among them, the heavy oil fraction enters the isomerization hydrocracking reactor, contacts and reacts with the isomerization hydrocracking catalyst and the post-refining catalyst, and the isomerization hydrocracking reaction effluent enters the separation and fractionation system for separation and fractionation to obtain the second naphtha Distillate, middle distillate and tail oil fraction, wherein, 4 ...

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Abstract

The invention relates to the field of oil refining and discloses a hydrogenation quality improving method of Fischer-Tropsch synthetic oil. The method comprises the steps as follows: Fischer-Tropsch synthetic oil and a hydrogen-containing substance flow are introduced into a hydrorefining reactor to react, then a hydrorefinng reaction effluent is separated, and a heavy oil fraction is obtained; the heavy oil fraction is introduced into an isometic hydrocracking reactor to react, an isometric hydrocracking reaction effluent is separated, and a tail oil fraction is obtained, wherein at least two catalyst bed layers are contained in the isometic hydrocracking reactor, and at least part of tail oil fraction is circulated back between the catalyst bed layers of the isometic hydrocracking reactor. With the adoption of the hydrogenation quality improving method of Fischer-Tropsch synthetic oil, the selectivity of intermediate fraction oil can be improved, and higher diesel oil yield can be obtained.

Description

technical field [0001] The invention relates to the field of oil refining, in particular to a method for hydrotreating and upgrading Fischer-Tropsch synthetic oil, and more specifically, the present invention relates to a method for producing middle distillates by hydrotreating and upgrading Fischer-Tropsch synthetic oil. Background technique [0002] With the rapid development of the national economy, my country's oil consumption presents a rapid upward trend. At the same time, with the increasingly stringent environmental protection requirements, more stringent requirements are put forward for the composition of engine fuels, impurity content and pollutant emissions during processing. However, as a non-renewable energy source, oil is facing a crisis of depletion, and the quality of oil is getting worse and worse, and the trend of inferior and heavy quality is becoming more and more obvious. Therefore, the development of new sustainable energy technologies that meet the re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02
Inventor 李猛牛传峰吴昊董松涛田鹏程
Owner CHINA PETROLEUM & CHEM CORP
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