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Catalyst used for coal hydrogenation catalytic gasification, and preparation method and use thereof

A catalyst and coal hydrogenation technology, applied in the field of catalysis, can solve the problems of low methanation yield and weakened catalyst effect, and achieve the effects of increasing H2 content, promoting methanation reaction, high conversion rate and methane generation amount

Inactive Publication Date: 2017-01-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the gasification process, alkali metal catalysts are easily passivated by minerals, which weakens the catalytic effect and leads to low methanation yield.

Method used

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  • Catalyst used for coal hydrogenation catalytic gasification, and preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 0.25 g Ni(NO 3 ) 2 , 0.16 g Mn(Ac) 2 and 3.79 g C 18 h 29 NaO 3 Dissolve S in 40 ml of deionized water, then add 5 g of bituminous coal to the above solution, stir well to make it evenly mixed, add the above solution into a high-pressure reactor, and conduct a hydrothermal treatment at 3.5MP, 180°C for 5 hours, and the high-pressure reaction The materials in the kettle were taken out, washed and dried, pressed into tablets, ground and sieved, marked as Sample 1, and set aside. The change curve of the conversion rate of coal to gaseous products on the catalyst with time and the CH 4 The production quantities are shown in Table 1.

Embodiment 2

[0020] 0.25 g Ni(NO 3 ) 2 , 0.16 g Mn(Ac) 2 and 3.48 g C 18 h 33 o 2 Na was dissolved in 40 ml of deionized water, then 5 g of bituminous coal was added to the above solution, stirred thoroughly to make it evenly mixed, and the above solution was added to a high-pressure reaction kettle, and hydrothermally treated at 3.5MP, 180°C for 5 hours, and the high-pressure reaction The materials in the kettle are taken out, washed, dried, pressed into tablets, ground and sieved, marked as Sample 2, and set aside. The change curve of the conversion rate of coal to gaseous products on the catalyst with time and the CH 4 The production quantities are shown in Table 1.

Embodiment 3

[0022] 0.25g Ni(NO 3 ) 2 , 0.16g Mn(Ac) 2 and 3.28g C 18 h 33 o 2 K was dissolved in 40 ml of deionized water, then 5 g of bituminous coal was added to the above solution, fully stirred to make it evenly mixed, the above solution was added to the autoclave, and hydrothermally treated at 3.5MP, 180°C for 5 hours, the The materials in the kettle are taken out, washed, dried, pressed into tablets, ground and sieved, marked as Sample3, and set aside. The change curve of the conversion rate of coal to gaseous products on the catalyst with time and the CH 4 The production quantities are shown in Table 1.

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Abstract

The invention belongs to the technical field of coal hydrogenation catalytic gasification catalysts, and provides a high-efficiency catalyst used for coal hydrogenation catalytic gasification, and a preparation method thereof. The above ternary composite catalyst is obtained through depositing a ternary active component of the catalyst on a coal-based material by adopting a simple and effective precipitation technology, and surface function groups on the coal-based material have strong interaction with the catalyst components. Compared with a unitary component and a binary component, the ternary component applied in the reaction for preparing natural gas through coal hydrogenation catalytic gasification has a low melting point, easily becomes a liquid rapidly penetrating apertures in the coal-based material in order to improve the gasification efficiency of the coal, can be easily combined with the coal in the presence of organic potassium or sodium salt, and generates a large amount of apertures in the high temperature reaction process. A result of active test shows that the prepared Fe-Ca-Na catalyst allows the rate of conversion of the coal into a gaseous product to reach 75.2% and the methane generation amount to be 3.7 mmol.g<-1> when the reaction time is 300 min.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and relates to a high-efficiency catalytic gasification catalyst for coal hydrogenation and a preparation method thereof. Background technique [0002] The utilization of coal in my country is dominated by direct combustion, which not only has a low energy utilization rate, but also causes dust, acid rain, and a large amount of greenhouse gas CO 2 For pollution problems such as emissions, coal gasification technology plays an important role in efficient and clean utilization of coal resources. However, the traditional coal gasification process has high reaction temperature, difficult purification of generated gas, high energy consumption, and high requirements for equipment. [0003] Various new coal gasification technologies that are in the laboratory research stage are called the third generation coal gasification technology, including catalytic coal gasification technology. Conventional coa...

Claims

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Application Information

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IPC IPC(8): B01J31/32B01J31/28B01J31/30C10L3/08
Inventor 朱艳芳吴琳蔡进张杰吴学其黄先亮徐本刚魏士新王金利
Owner CHINA PETROLEUM & CHEM CORP
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