Method for producing high-density jet fuel by virtue of hydrogenation of medium-and-low temperature coal tar

A technology of low-temperature coal tar and jet fuel, which is applied in the fields of hydrotreating process, petroleum industry, and hydrocarbon oil treatment. It can solve problems such as pollution and low yield of jet fuel, and achieve high mass density, volume calorific value, and high temperature. Pyrolytic stability and high density, effect of improving utilization value

Inactive Publication Date: 2016-06-22
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method produces certain pollution to the environment during the production process, and the yield of jet fuel is low

Method used

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  • Method for producing high-density jet fuel by virtue of hydrogenation of medium-and-low temperature coal tar
  • Method for producing high-density jet fuel by virtue of hydrogenation of medium-and-low temperature coal tar
  • Method for producing high-density jet fuel by virtue of hydrogenation of medium-and-low temperature coal tar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The method for producing high-density jet fuel by hydrogenation of the above-mentioned medium and low temperature coal tar specifically consists of the following steps:

[0029] (1) Hydrotreating of coal tar

[0030] Mix medium-low temperature coal tar and hydrogen into the hydrogenation reactor, heat it to the reaction temperature, and carry out the hydrogenation reaction through the hydrogenation protection catalyst bed and the hydrogenation refining catalyst bed in sequence. The hydrogen partial pressure is 13MPa, and the hydrogenation protection The reaction temperature of the catalyst bed is 200°C, the reaction temperature of the hydrofining catalyst bed is 375°C, the volume ratio of hydrogen to oil is 1350:1, and the average liquid volume space velocity of the hydrogenation protection catalyst bed is 1.0h -1 , the average liquid volume space velocity of the hydrofining catalyst is 0.45h -1 , gas-liquid separation after the reaction to obtain hydrogenated oil;

...

Embodiment 2

[0049] The method for producing high-density jet fuel by hydrogenation of the above-mentioned medium and low temperature coal tar specifically consists of the following steps:

[0050] (1) Hydrotreating of coal tar

[0051] Mix medium-low temperature coal tar and hydrogen into the hydrogenation reactor, heat it to the reaction temperature, and carry out the hydrogenation reaction through the hydrogenation protection catalyst bed and the hydrogenation refining catalyst bed in sequence. The hydrogen partial pressure is 12MPa, and the hydrogenation protection The reaction temperature of the catalyst bed is 180°C, the reaction temperature of the hydrofining catalyst bed is 360°C, the volume ratio of hydrogen to oil is 1200:1, and the average liquid volume space velocity of the hydrogenation protection catalyst bed is 0.8h -1 , the average liquid volume space velocity of the hydrofining catalyst is 0.4h -1 , gas-liquid separation after the reaction to obtain hydrogenated oil;

[...

Embodiment 3

[0059] The method for producing high-density jet fuel by hydrogenation of the above-mentioned medium and low temperature coal tar specifically consists of the following steps:

[0060] (1) Hydrotreating of coal tar

[0061] Mix medium-low temperature coal tar and hydrogen into the hydrogenation reactor, heat it to the reaction temperature, and carry out the hydrogenation reaction through the hydrogenation protection catalyst bed and the hydrogenation refining catalyst bed in sequence. The hydrogen partial pressure is 14MPa, and the hydrogenation protection The reaction temperature of the catalyst bed is 210°C, the reaction temperature of the hydrofining catalyst bed is 390°C, the volume ratio of hydrogen to oil is 1500:1, and the average liquid volume space velocity of the hydrogenation protection catalyst bed is 1.1h -1 , the average liquid volume space velocity of the hydrofining catalyst is 0.5h -1 , gas-liquid separation after the reaction to obtain hydrogenated oil;

[...

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Abstract

The invention relates to a method for producing a high-density jet fuel by virtue of hydrogenation of medium-and-low temperature coal tar. The method comprises the following steps of: firstly mixing and heating medium-and-low temperature coal tar and hydrogen; performing hydrogenation reactions sequentially in the presence of a hydrogenation protective catalyst and a hydrorefining catalyst, and performing fractional distillation on hydrogenation products so as to obtain naphtha, a crude jet fuel and tail oil; and performing clay refining on the crude jet fuel, so as to obtain high-density #6 jet fuel with good antioxidation stability, good demulsibility and favorable insulativity. By aiming at the characteristic that hydrogenation products of coal tar have a large amount of naphthenic hydrocarbon and aromatic hydrocarbon, a hydrogenation-clay refining combined process is utilized to process coal tar into high value-added products such as the naphtha and jet fuels under conditions of specific process parameters and specific catalysts; the method can be used for extending the coal tar hydrogenation industry chain, improving the coal tar utilization value, also expanding military fuel sources and better meeting the fuel consumption demand of novel weapons.

Description

technical field [0001] The invention belongs to the technical field of coal tar processing, in particular to a method for producing high-density jet fuel from coal tar. technical background [0002] In recent years, the contradiction between the shortage of oil and gas resources in my country and the development of the national economy has become increasingly prominent. my country has abundant coal reserves, and promoting the idea of ​​coal-based diversified energy development has become an important technical means for my country to adjust and optimize its energy structure. Among them, the use of coal pyrolysis, coking or gasification by-product coal tar to produce light fuel technology through hydrogenation upgrading can not only alleviate the energy situation of shortage of petroleum resources, but also improve the comprehensive utilization value of coal tar and solve the problem of coal Problems such as environmental pollution caused by low-value utilization of tar. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00
CPCC10G67/00C10G2300/201
Inventor 李冬裴亮军薛凤凤袁扬李稳宏
Owner NORTHWEST UNIV(CN)
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