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A method for producing middle distillate oil by hydrogenation of Fischer-Tropsch synthetic oil

A technology for Fischer-Tropsch synthetic oil and middle distillate oil, which is used in hydrotreating process, treatment of hydrocarbon oil, petroleum industry, etc., can solve the problems of low yield and low selectivity of middle distillate oil, etc. Yield, reducing bed temperature rise, reducing the effect of secondary cracking

Active Publication Date: 2018-11-02
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 method for producing middle distillates by hydrotreating Fischer-Tropsch synthetic oil

Method used

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  • A method for producing middle distillate oil by hydrogenation of Fischer-Tropsch synthetic oil
  • A method for producing middle distillate oil by hydrogenation of Fischer-Tropsch synthetic oil
  • A method for producing middle distillate oil by hydrogenation of Fischer-Tropsch synthetic oil

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Effect test

Embodiment 1

[0038] The whole fraction of Fischer-Tropsch synthetic oil enters the hydrofinishing reactor and reacts with the hydrofinishing catalyst RTF-1. After the hydrofinishing reaction effluent is separated and fractionated, the first naphtha fraction, light diesel fraction and heavy oil fraction are obtained . Distillate A is added to the heavy oil fraction, and the mass fraction of the distillate A added is 3% based on the heavy oil fraction. The heavy oil fraction after adding distillate A enters the hydroisomerization cracking reactor, contacts with the hydroisomerization catalyst to carry out the hydroisomerization cracking reaction, and the effluent of the hydroisomerization cracking reactor is separated and fractionated to obtain the second The naphtha fraction, the middle distillate oil and the tail oil fraction, and the tail oil fraction are recycled back to the inlet of the hydroisomerization cracking reactor for further reaction. See Table 3 and Table 4 for specific react...

Embodiment 2

[0041] The whole fraction of Fischer-Tropsch synthetic oil enters the hydrofinishing reactor and reacts with the hydrofinishing catalyst RTF-1. After the hydrofinishing reaction effluent is separated and fractionated, the first naphtha fraction, light diesel fraction and heavy oil fraction are obtained . Distillate B is added to the heavy oil fraction, and the mass fraction of distillate B added is 1% based on the heavy oil fraction. The heavy oil fraction after adding distillate B enters the hydroisomerization cracking reactor and contacts with the hydroisomerization catalyst to carry out the hydroisomerization cracking reaction, and the effluent of the hydroisomerization cracking reactor is separated and fractionated to obtain the second The naphtha fraction, the middle distillate oil and the tail oil fraction, and the tail oil fraction are recycled back to the inlet of the hydroisomerization cracking reactor for further reaction. See Table 3 and Table 4 for specific reacti...

Embodiment 3

[0044] The whole fraction of Fischer-Tropsch synthetic oil enters the hydrofinishing reactor and reacts with the hydrofinishing catalyst RTF-1. After the hydrofinishing reaction effluent is separated and fractionated, the first naphtha fraction, light diesel fraction and heavy oil fraction are obtained . Distillate C is added to the heavy oil fraction, and the mass fraction of distillate C added is 5% based on the heavy oil fraction. The heavy oil fraction after adding distillate C enters the hydroisomerization cracking reactor, and contacts with the hydroisomerization catalyst to carry out the hydroisomerization cracking reaction, and the effluent of the hydroisomerization cracking reactor is separated and fractionated to obtain the second The naphtha fraction, the middle distillate oil and the tail oil fraction, and the tail oil fraction are recycled back to the inlet of the hydroisomerization cracking reactor for further reaction. See Table 3 and Table 4 for specific react...

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Abstract

The invention relates to a method for producing middle distillate oil through hydrogenation of Fischer-Tropsch synthesis oil. According to the method, the whole distillate of Fischer-Tropsch synthesis oil and hydrogen gas are mixed, the obtained mixture enters a hydrorefining reactor and is subjected to a contact reaction with a hydrorefining catalyst, the obtained hydrorefining reaction effluent is sequentially subjected to separation and fractionation to obtain a first naphtha distillate, a light diesel oil distillate and a heavy oil distillate, the heavy oil distillate is mixed with at least a distillate oil and hydrogen gas, the obtained mixed material enters a hydroisomerization cracking reactor and is subjected to a contact reaction with a hydroisomerization cracking catalyst, and the obtained hydroisomerization cracking reaction effluent is sequentially subjected to separation and fractionation to obtain a second naphtha distillate, a middle distillate oil and a tail oil distillate. With the method of the present invention, the selectivity and the yield of the middle distillate oil are easily improved.

Description

technical field [0001] The invention relates to a method for hydrogenation conversion of Fischer-Tropsch synthetic oil, in particular to a method for producing middle distillate oil by hydrogenation of Fischer-Tropsch synthetic oil. Background technique [0002] With the 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 fuel, impurity content and pollutant discharge 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 requirements of environmental protection and the demand for liquid fuels has become a research motiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G65/00
Inventor 李猛高晓冬吴昊董松涛
Owner CHINA PETROLEUM & CHEM CORP