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A coal-based mixed high energy density fuel and its preparation method

A high-energy-density, coal-based technology, applied in the field of coal chemical industry, can solve the problems of not realizing the maximum utilization of the full fraction of coal-based derived oil, low yield of high-energy-density fuel products, low density and energy density, etc. A wide range of applications, the effect of improving mobility and penetration capability, large mass density and volumetric calorific value

Active Publication Date: 2020-05-12
CCTEG CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These existing technologies have problems such as low utilization rate of raw materials, low yield of high-energy-density fuel products, low density and low energy density, and failure to maximize the utilization of the full fraction of coal-based derived oil.

Method used

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  • A coal-based mixed high energy density fuel and its preparation method
  • A coal-based mixed high energy density fuel and its preparation method
  • A coal-based mixed high energy density fuel and its preparation method

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preparation example Construction

[0044] Such as figure 1 Shown, the preparation method of a kind of coal-based mixed high energy density fuel that one embodiment of the present invention proposes, it comprises:

[0045] Distillation separation: the coal-based derived oil 1 enters the distillation separation unit 2 and undergoes distillation separation to obtain the first naphtha fraction 3, diesel fraction 4 and heavy oil fraction 5;

[0046] Hydrocracking: The heavy oil fraction 5 and hydrogen are mixed and sent to the hydrocracking unit 6 through a high-pressure pump, and hydrogen-rich gas and liquid phase oil are obtained through oil slurry preparation, hydrocracking reaction, and gas-liquid separation; hydrogen-rich The gas is used as circulating hydrogen; the liquid phase oil is distilled to obtain cracked naphtha fraction 7 and cracked diesel fraction 8;

[0047] Hydrogenation and upgrading: the diesel oil fraction 4 and the cracked diesel oil fraction 8 are mixed and then mixed with hydrogen to enter ...

Embodiment 1

[0077] One embodiment of the present invention proposes a method for preparing a coal-based mixed high-energy-density fuel, which includes:

[0078] Distillation and separation: using black mountain bituminous coal direct liquefaction oil as raw material oil, through distillation separation, the first naphtha fraction at 350°C are obtained; the properties of the raw oil are shown in Table 1 shown;

[0079] Hydrocracking: prepare heavy oil fractions through oil slurry preparation, hydrocracking reaction, and gas-liquid separation to obtain hydrogen-rich gas and liquid phase oils; distill the liquid phase oils to obtain cracked naphtha fractions and Cracked diesel fraction; the scale of the hydrocracking unit is 0.01t / d, and the hydrocracking unit adopts two suspended bed reactors connected in series;

[0080] Hydrogenation and upgrading: hydrogenation and upgrading of diesel fraction and cracked diesel fraction to obtain hydrogenation and upgrading oil; the hydrogenation and u...

Embodiment 2

[0086] One embodiment of the present invention proposes a method for preparing a coal-based mixed high-energy-density fuel, which includes:

[0087] Distillation and separation: The kerosene co-refined oil obtained by the co-hydrogenation of lignite and catalytic cracking oil slurry is used as the raw material oil, through distillation and separation, the first naphtha fraction of 370°C are obtained. Quality oil fraction; The properties of raw material oil are as shown in table 1;

[0088] Hydrocracking: prepare heavy oil fractions through oil slurry preparation, hydrocracking reaction, and gas-liquid separation to obtain hydrogen-rich gas and liquid phase oils; distill the liquid phase oils to obtain cracked naphtha fractions and Cracked diesel fraction; the scale of the hydrocracking unit is 0.01t / d, and the hydrocracking unit adopts two suspended bed reactors connected in series;

[0089] Hydrogenation and upgrading: Hydrogenation and upgrading of diesel fraction and crack...

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Abstract

The invention relates to a coal-based mixed high energy density fuel and a preparation method thereof. The preparation method comprises the following steps of using coal-based derived oil as a raw material; firstly, distilling and separating into a naphtha fraction, a diesel fraction and a heavy oil fraction; performing hydrogenation and cracking weight reduction treatment on the heavy oil fraction, so as to obtain the cracked naphtha fraction and the cracked diesel fraction; enriching the aromatic hydrocarbon, and chemically synthesizing the mixed naphtha fraction, so as to prepare the high energy density fuel component with a stereo molecule structure; performing hydrogenation and upgrading on the mixed diesel fraction, so as to obtain the large-specific gravity aviation kerosene component; finally, mixing the high energy density fuel component, the large-specific gravity aviation kerosene component and an additive, so as to obtain the coal-based mixed high energy density fuel. The preparation method has the advantages that the purpose of maximization production of high energy density fuel by the coal-based derived oil is realized, and the source of the coal-based high energy density fuel is expanded; compared with the single coal-based high energy density fuel and No.3 air jet fuel, the physical and chemical properties of the prepared coal-based mixed high energy density fuel are better.

Description

technical field [0001] The invention belongs to the field of coal chemical industry, and relates to a high-value utilization method of coal-based oil, in particular to a coal-based mixed high-energy-density fuel produced by using coal-based oil and a preparation method thereof. Background technique [0002] my country's energy structure is characterized by "coal-rich, oil-deficient, and gas-poor". In recent years, the gap between my country's oil supply and demand has been expanding year by year, and the degree of dependence on foreign oil has increased year by year. In 2017, the degree of dependence on foreign oil reached 67.4%, and it is expected to reach About 70%. Fluctuations and changes in the international oil market will directly affect the security and stability of our country's economy and politics. The preparation of liquid fuel through the coal-based oil route not only meets the national strategic security requirements, but also plays an important role in promoti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/02
CPCC10G69/02
Inventor 毛学锋胡发亭曲思建李文博李军芳赵鹏钟金龙朱肖曼刘敏常秋连颜丙峰赵渊李伟林马博文陈来夫
Owner CCTEG CHINA COAL RES INST
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