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Coal-based high-density liquid fuel and its preparation method

A high-density liquid, coal-based technology, which is applied in the treatment of hydrocarbon oil, petroleum industry, hydrotreating process, etc., can solve the problems of low quality, complicated process route, low yield, etc., and achieve good low temperature fluidity and high volume Effect of specific heat capacity and high flash point

Active Publication Date: 2021-01-05
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The main purpose of the present invention is to provide a coal-based high-density liquid fuel and its preparation method to solve the technical problems of complex jet fuel process route, low quality and low yield in the production of coal liquefied oil in the prior art, so as to meet the needs of our country Real Demand for High-Quality Jet Fuel

Method used

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  • Coal-based high-density liquid fuel and its preparation method
  • Coal-based high-density liquid fuel and its preparation method
  • Coal-based high-density liquid fuel and its preparation method

Examples

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preparation example Construction

[0028] According to a typical embodiment of the present invention, a method for preparing coal-based high-density jet fuel is provided. The preparation method comprises the following steps: S1, after mixing the direct coal liquefied oil and hydrogen, contacting with a hydrofining catalyst to generate a hydrofining reaction; S2, contacting the reaction effluent in S1 with a hydrocracking catalyst to generate Hydrogenation reforming reaction; S3, the reaction effluent in S2 is separated and fractionated to obtain high-density liquid fuel, naphtha and diesel fractions.

[0029] Applying the technical scheme of the present invention, after the direct coal liquefied oil is subjected to the hydrofining reaction, hydrodeoxygenation, desulfurization, denitrogenation and aromatic hydrocarbon saturation reactions mainly occur, and heteroatoms are basically effectively removed during the reaction process, and the hydrogenated coal-based Oil can be used as a clean fuel, and most of the ar...

Embodiment 1

[0045] After the coal liquefied whole distillate oil is mixed with hydrogen, it enters the hydrofinishing reactor after preheating, and contacts with the hydrogenation protection catalyst RGC-1 and the hydrofinishing catalyst RNC-2, and the hydrofinishing reaction occurs to remove heteroatoms And the hydrogenation saturation reaction of aromatic hydrocarbons; the effluent from the hydrofinishing reactor enters the hydrogenation upgrading reactor, and contacts with the hydrogenation upgrading catalyst RCC-1 in the upgrading reactor, and the aromatic ring cracking ring-opening reaction occurs; the hydrogenation upgrading The effluent from the mass reactor is separated and fractionated to obtain naphtha fraction, high-density liquid fuel and diesel fraction.

[0046] The hydrogenation reaction (hydrofining and hydrogenation upgrading) conditions are: reaction pressure 13.7MPa, reaction temperature 370°C, volume space velocity 0.7h -1 , hydrogen oil ratio 700Nm 3 / m 3 .

Embodiment 2

[0048] The process flow of Example 2 is the same as that of Example 1, the feedstock oil is >140°C coal liquefaction distillate, and the process conditions remain unchanged.

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Abstract

The invention discloses coal-based high-density liquid fuel and a preparation method thereof. The preparation method comprises the following steps: S1, contacting coal direct liquefied oil and hydrogen with hydrorefined catalyst to perform a hydrorefining reaction; S2, contacting the reaction effluent in the S1 with a hydrogen cracking catalyst to perform a hydro-upgrading reaction; S3, separatingand fractioning the reaction effluent in the S2 to obtain coal-based high-density liquid fuel, naphtha and diesel fraction. By applying the technical scheme, the coal-based high-density liquid fuel has the yield of 55 percent or more, the density of 0.85g / cm<3> or more and volume calorific value of close to 55 percent or more, and has the characteristics of low sulfur, low nitrogen, low aromatichydrocarbon, rich cycloalkanes, high flash point, high volume specific heat capacity, high thermal stability, good low temperature mobility and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of coal direct liquefaction, in particular to a coal-based high-density liquid fuel and a preparation method thereof. Background technique [0002] High energy density fuel density is generally higher than 0.80g / cm 3 , are liquid or solid hydrocarbons with high mass density and volumetric calorific value, and are mainly used in the aerospace field. The mass calorific value of hydrocarbon fuels is roughly the same, and the volume calorific value is basically linear with the increase of density. Therefore, in the case of a certain volume of the aircraft, the greater the fuel density, the more energy it can carry, which means greater flight radius. In the 21st century, aerospace vehicles have entered a stage of hypersonic development, and future supersonic aircraft will have mass limitations and higher thermal loads. This requires that the future jet fuel should have high density, high calorific value and ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G65/12
CPCC10G65/12C10G2300/202
Inventor 高山松舒歌平杨葛灵章序文李永伦王洪学姜元博王国栋单贤根白雪梅谢晶吴剑平
Owner CHNA ENERGY INVESTMENT CORP LTD
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