Coal direct liquefaction catalyst and coal direct liquefaction method

A technology for direct liquefaction of coal and catalyst, which can be used in the preparation of liquid hydrocarbon mixtures, petroleum industry and other directions, and can solve problems such as reduced catalytic activity.

Inactive Publication Date: 2021-01-22
CHINA SHENHUA COAL TO LIQUID & CHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a direct coal liquefaction catalyst and a direct coal liquefaction method in order to overcome the problem that the catalyst is wrapped ...

Method used

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  • Coal direct liquefaction catalyst and coal direct liquefaction method
  • Coal direct liquefaction catalyst and coal direct liquefaction method
  • Coal direct liquefaction catalyst and coal direct liquefaction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Preparation of coal direct liquefaction catalyst:

[0050] 5.7 parts by weight of FeSO 4 ·7H 2 O dissolved in 46.88 parts by weight of water to obtain FeSO 4 solution, in FeSO 4 Add 15.78 parts by weight of carrier coal (coal sample 2) to the solution and stir evenly to obtain FeSO 4 coal slurry; and

[0051] Dilute 1.27 parts by weight of concentrated ammonia water with 17.38 parts by weight of water to obtain aqueous ammonia solution;

[0052] Under stirring, the above ammonia solution was added to the above FeSO 4 In the coal slurry, adjust the pH to 7.8, continue to stir for 10s after the addition, and then put the above reaction product at 40°C, 3m 3 Oxidation was carried out for 100 min at an air flow rate of / h, and the oxidation product was centrifugally filtered and dried to obtain direct coal liquefaction catalyst A1, whose physical parameters are shown in Table 2.

[0053] Coal direct liquefaction reaction:

[0054] The direct coal liquefaction reacti...

Embodiment 2

[0070] According to the method of Example 1, the difference is: coal sample 3 is used as carrier coal to obtain direct coal liquefaction catalyst A2, and its physical parameters are as shown in Table 2;

[0071] Coal sample 1 is adopted as raw material coal, and the coal direct liquefaction reaction method is the same as embodiment 1;

[0072] The analysis method of coal direct liquefaction products is the same as that in Example 1, and the results are shown in Table 3.

Embodiment 3

[0078] According to the method of embodiment 1, the difference is that ammonium molybdate is added in the preparation process of the direct coal liquefaction catalyst, and the concrete steps are as follows:

[0079] 5.7 parts by weight of FeSO 4 ·7H 2 O and be dissolved in 46.88 parts by weight water to obtain mixed solution, add 15.78 parts by weight carrier coal (coal sample 2) in mixed solution, stir and make coal slurry;

[0080] Dilute 1.27 parts by weight of concentrated ammonia water with 17.38 parts by weight of water to obtain aqueous ammonia solution;

[0081] Under stirring, the above ammonia solution was added to the above FeSO 4 In the coal slurry, adjust the pH to 7.8, continue to stir for 10s after the addition, and then put the above reaction product at 40°C, 3m 3 Oxidation for 100min under the air flow rate per hour, the oxidation product was subjected to centrifugal filtration, impregnated in 2.5 parts by weight of 15% (NH 4 ) 6 Mo 7 o 24 Aqueous solut...

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Abstract

The present invention belongs to the technical field of direct coal liquefaction and relates to a direct coal liquefaction catalyst and a direct coal liquefaction method. The coal direct liquefactioncatalyst comprises carrier coal and an active metal element loaded on the carrier coal; the vitrinite content of the carrier coal is more than or equal to 70 wt%; the active metal element contains iron. According to the coal direct liquefaction catalyst provided by the invention, the high vitrinite and low-ash coal is adopted as the carrier coal; a vitrinite structural unit is easy to break in a coal direct liquefaction process to generate small-fragment free radicals, and catalyst active components loaded on the carrier coal are uniformly dispersed in a coal liquefaction system along with cracking of the carrier coal, and therefore, good catalytic conditions are provided for hydrogen activation, coal pyrolysis free radical fragment hydrogenation and coal free radical cracking hydrogenation, and the coal liquefaction conversion rate and the oil yield can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of direct coal liquefaction, in particular to a catalyst for direct coal liquefaction and a method for direct coal liquefaction. Background technique [0002] Coal direct liquefaction is a new type of coal chemical clean coal technology that converts coal into liquid products through thermochemical and catalytic reactions under the conditions of high temperature and high pressure in the presence of hydrogen, under the dual action of hydrogen-donating solvent and catalyst. The coal direct liquefaction oil produced by this technology has high density, high heat capacity, high thermal stability, high calorific value, low freezing point, low sulfur, low nitrogen, low aromatics, and high naphthenes, which are different from conventional petroleum-based oils. It can provide a new source of military oil and special fuel in the aerospace field. Therefore, the direct coal liquefaction technology has always been a ho...

Claims

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Application Information

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IPC IPC(8): C10G1/00C10G1/06C10G1/08
CPCC10G1/008C10G1/06C10G1/086
Inventor 王洪学谢晶李导舒歌平杨葛灵单贤根辛凡文吴剑平
Owner CHINA SHENHUA COAL TO LIQUID & CHEM CO LTD
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