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Method for hydrogenating and liquefying coal with high content of inert components

A hydrogenation liquefaction, high content technology, applied in the preparation of liquid hydrocarbon mixtures, petroleum industry, etc., can solve the problems of low conversion rate, difficult liquefaction of Wucaiwan coal, low liquefaction yield, etc., and achieve the effect of increasing oil yield

Inactive Publication Date: 2010-01-13
XINJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The present invention provides a method for hydrogenation liquefaction of high-content inertite coal, which overcomes the deficiencies of the prior art, solves the problem that Wucaiwan coal is difficult to liquefy, and specifically solves the problem of Wucaiwan coal due to inertite content. Higher, lower ratio of hydrogen and carbon elements, lower volatile matter, resulting in lower liquefaction yield (including oil yield, oil and gas yield, conversion rate) and higher cost

Method used

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  • Method for hydrogenating and liquefying coal with high content of inert components
  • Method for hydrogenating and liquefying coal with high content of inert components
  • Method for hydrogenating and liquefying coal with high content of inert components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: The hydrogenation liquefaction method of this high-content inert component coal is carried out according to the following steps:

[0026] The first step of swelling treatment: N-methylpyrrolidone (NMP), N,N-dimethylformamide (DMF) and carbon disulfide (CS 2 ) mixed with Wucaiwan coal at a ratio of 2:1 while stirring, sealed and left to swell for 0.5 hours at room temperature, vacuum filtered and dried to obtain swelled coal; wherein, N-methylpyrrolidone (NMP) , N, N-dimethylformamide (DMF) and carbon disulfide (CS 2 ) to form a mixed solution with a volume ratio of 1:0:1, and the ratio unit of the above mixed solution to Wucaiwan coal is ml / g;

[0027] The second step of hydrogenation liquefaction reaction: the required amount of the above-mentioned swelling coal, catalyst ferric oxide, cocatalyst elemental sulfur and hydrogen-donating solvent tetrahydronaphthalene are mixed evenly and poured into the reactor, and the reactor is sealed and poured into the...

Embodiment 2

[0029] Embodiment 2: the hydrogenation liquefaction method of this high-content inert component coal is characterized in that it is carried out according to the following steps:

[0030] The first step of swelling treatment: N-methylpyrrolidone (NMP), N,N-dimethylformamide (DMF) and carbon disulfide (CS 2 ) mixed with Wucaiwan coal at a ratio of 10:1 while stirring, sealed and left to swell for 24 hours at room temperature, vacuum filtered and dried to obtain swollen coal; wherein, N-methylpyrrolidone (NMP) , N, N-dimethylformamide (DMF) and carbon disulfide (CS 2 ) to form a mixed solution with a volume ratio of 2:0 to 1:1, and the unit of the ratio of the above mixed solution to Wucaiwan coal is ml / g;

[0031] The second step of hydrogenation liquefaction reaction: the required amount of the above-mentioned swelling coal, catalyst ferric oxide, cocatalyst elemental sulfur and hydrogen-donating solvent tetrahydronaphthalene are mixed evenly and poured into the reactor, and t...

Embodiment 3

[0033] Embodiment 3: the hydroliquefaction method of this high-content inert component coal is carried out according to the following steps:

[0034] The first step of swelling treatment: N-methylpyrrolidone (NMP), N,N-dimethylformamide (DMF) and carbon disulfide (CS 2 ) mixed with Wucaiwan coal at a ratio of 2 to 10:1 while stirring, then sealed and left to swell for 0.5 to 24 hours at room temperature, vacuum filtered and dried to obtain swollen coal; wherein, N-formazol Nylpyrrolidone (NMP), N, N-dimethylformamide (DMF) and carbon disulfide (CS 2 ) to form a mixed solution with a volume ratio of 1 to 2:0 to 1:1, and the ratio of the above mixed solution to Wucaiwan coal is in ml / g;

[0035] The second step of hydrogenation liquefaction reaction: the required amount of the above-mentioned swelling coal, catalyst ferric oxide, cocatalyst elemental sulfur and hydrogen-donating solvent tetrahydronaphthalene are mixed evenly and poured into the reactor, and the reactor is seale...

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Abstract

The invention relates to a method for hydrogenating and liquefying coal with high content of inert components, comprising the steps of swelling treatment, hydrogenation and liquefaction reaction as well as solid-liquid separation. The invention has the advantages that under the conditions of higher content of inert components, lower content of hydrogen and carbon elements and lower content of volatiles in Wucaiwan coal with consideration to the liquefaction cost, the oil yield of hydrogenation liquefaction of the Wucaiwan coal is obviously improved, thereby changing the current well-known view that only low liquefaction rate of coal can be obtained when the coal has high content of inert components and low content of hydrogen and carbon elements and volatiles.

Description

technical field [0001] The invention relates to the technical field of direct coal liquefaction, and relates to a hydrogenation liquefaction method for coal with high content of inert components. Background technique [0002] Xinjiang is very rich in coal resources, and its predicted reserves reach 2.19 trillion tons, exceeding 40% of the national total. [0003] Wucaiwan Coal is located in the Zhundong area. It is the first of the five major coal, electricity and coal chemical industry bases in Xinjiang. It is about to be built into the world's largest open-pit coal mine. The coal in this mining area has the characteristics of many coal seams, large thickness, shallow burial, high moisture, low ash and low sulfur. The coal quality analysis of Wucaiwan coal is shown in Table 1. Its coal quality characteristics can be summarized as "three highs", that is, high inertinite content, high moisture, and high calcium oxide; "three lows", that is, low hydrogen-carbon element ratio...

Claims

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Application Information

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IPC IPC(8): C10G1/06
Inventor 马凤云郭靖周岐雄
Owner XINJIANG UNIVERSITY
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