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Method for preparing coal-based light liquid paraffin from coal indirect liquefied oil product and coal-based light liquid paraffin obtained through method

A light liquid paraffin and oil technology, applied in the field of coal chemical industry, can solve the problems of products without post-processing, poor product quality and economic rationality

Inactive Publication Date: 2017-05-17
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The liquid paraffin fraction produced by this technology does not give the properties of the product, and the product has not been post-processed, and the product quality and economic rationality are poor

Method used

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  • Method for preparing coal-based light liquid paraffin from coal indirect liquefied oil product and coal-based light liquid paraffin obtained through method
  • Method for preparing coal-based light liquid paraffin from coal indirect liquefied oil product and coal-based light liquid paraffin obtained through method
  • Method for preparing coal-based light liquid paraffin from coal indirect liquefied oil product and coal-based light liquid paraffin obtained through method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1. Preparation of coal-based light liquid paraffin by indirect liquefaction of coal

[0043] This method takes coal indirect liquefied oil (i.e. Fischer-Tropsch synthetic oil) as raw material, and mainly carries out three steps of hydrofining, fractionation and dewaxing to prepare coal-based light liquid paraffin, specifically as follows:

[0044] 1. Hydrogenation process flow: Fill the catalyst inside the fixed bed reactor. In order to better control the reaction heat release, the hydrogenation catalyst with a total mass of 58t is 1:1.2:1.7 from top to bottom according to the volume ratio. Filled in three layers with a volume of 212m 3In a fixed-bed reactor with an inner diameter of 4.4m; Fischer-Tropsch synthetic oil and fresh hydrogen are heated to 270-325°C and then enter from the top of the fixed-bed reactor; hydrogen, oil materials and catalysts are fully Mixing for hydrogenation reaction, the volume ratio of hydrogen to oil is 500, the reaction temperatu...

Embodiment 2

[0053] Example 2, coal-based light liquid paraffin prepared by indirect liquefaction of coal

[0054] The raw material is the same as that used in Example 1, mainly carrying out three steps of hydrofining, fractionation and dewaxing to prepare coal-based light liquid paraffin, specifically as follows:

[0055] 1. Hydrogenation process flow: the filling of the fixed bed reactor and catalyst is the same as in Example 1; after heating the Fischer-Tropsch synthetic oil and fresh hydrogen to 350-380°C, enter from the top of the fixed bed reactor; Oil materials and catalysts are fully mixed inside the fixed bed for hydrogenation reaction, the volume ratio of hydrogen to oil is 300, the reaction temperature is controlled at 260-270°C, the reaction pressure is 6MPa, and the volume space velocity is 1.0-2.4h -1 ; The reactants after catalytic hydrogenation are separated by an oil-gas separator to obtain the oil product part, which is the hydrotreated oil product, and the hydrotreated r...

Embodiment 3

[0063] Example 3, coal-based light liquid paraffin prepared by indirect liquefaction of coal

[0064] The raw material is the same as that used in Example 1, mainly carrying out three steps of hydrofining, fractionation and dewaxing to prepare coal-based light liquid paraffin, specifically as follows:

[0065] 1. Hydrogenation process flow: the loading of the fixed bed reactor and catalyst is the same as in Example 1; after heating the Fischer-Tropsch synthetic oil and fresh hydrogen to 270-325°C, enter from the top of the fixed bed reactor; Oil materials and catalysts are fully mixed inside the fixed bed for hydrogenation reaction, the volume ratio of hydrogen to oil is 700, the reaction temperature is controlled at 380-420°C, the reaction pressure is 9MPa, and the volume space velocity is 1.0-2.4h -1 ; The reactants after catalytic hydrogenation are separated by an oil-gas separator to obtain the oil product part, which is the hydrotreated oil product, and the hydrotreated r...

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Abstract

The invention discloses a method for preparing coal-based light liquid paraffin from a coal indirect liquefied oil product and coal-based light liquid paraffin obtained through the method. The method comprises hydrorefining, fractionation and de-waxing. The light liquid paraffin obtained through the method is high in n-alkane content, free of aromatic hydrocarbons, sulfur or nitrogen and low in preparation cost and is a superior chemical industrial raw material. According to the invention, raw materials and preparation methods of light liquid paraffin applied to industries, such as chlorinated paraffin, straight-chain alkyl benzene, a plastic plasticizer and a protein concentrate, are made to be diversified.

Description

technical field [0001] The invention belongs to the field of coal chemical industry and relates to the utilization of coal indirect liquefied oil products, in particular to a method for preparing coal-based light liquid paraffin from coal indirect liquefied oil products and the prepared coal-based light liquid paraffin. Background technique [0002] As the most important fuel used in the world today, oil is facing a crisis of depletion. From a global perspective, coal reserves far exceed oil reserves. By converting coal into liquid fuels in an efficient and clean process, it will effectively alleviate the tightness of oil supply. Therefore, the indirect liquefaction technology of coal—Fischer-Tropsch synthesis technology for producing liquid fuels is getting more and more attention. Fischer-Tropsch synthesis products include light distillate oil, heavy distillate oil, heavy wax, etc. Fischer-Tropsch synthesis products are mainly linear alkanes and alkenes, free of sulfur,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/14
CPCC10G67/14
Inventor 刘素丽罗春桃谭斌袁炜黄斌王峰安良成梁雪美袁华
Owner CHNA ENERGY INVESTMENT CORP LTD
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