Catalytic coal gasification catalyst and preparation method thereof

A coal catalytic gasification and catalyst technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc. Complicated conditions and other problems, to achieve excellent methanation ability, increase methane content, and reduce gasification temperature

Inactive Publication Date: 2014-02-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gu Junjie et al reported in the patent CN101497821A that supercritical water was used to efficiently disperse the catalyst on the coal powder, but the technical process conditions are complicated, the operation is difficult, and it is difficult to realize industrialization

Method used

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  • Catalytic coal gasification catalyst and preparation method thereof
  • Catalytic coal gasification catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 : Prepare sample Sample1

[0021] In this application example, the high-efficiency coal catalytic gasification to natural gas catalyst is prepared according to the following steps:

[0022] (1) Weigh 50 g NiCO respectively 3 2Ni(OH) 2 4H 2 O, 60 g (NH 4 ) 2 CO 3 and 80 g of 29% ammonia water were placed in a round-bottomed flask, 200 ml of distilled water was added to the above mixture, and the temperature was 60 °C and fully stirred for 1 h to prepare the complex Ni(NH 3 ) 6 CO 3 ,

[0023] (2) Weigh 50 g lignite and add to Ni(NH 3 ) 6 CO 3 In the aqueous solution, wherein the quality of Ni is 5% of lignite quality, carry out sufficient stirring to exchange Ni ion on lignite,

[0024] (3) After the obtained precipitate was washed and dried, it was pressed into tablets, crushed and sieved to 60-100 mesh, and marked as Sample1.

Embodiment 2

[0025] Example 2 : Prepare sample Sample2

[0026](1) Weigh 50 g Ni(OH) respectively 2 with NiCO 3 Mixture, 60 g NH 4 HCO 3 and 80 g of 29% ammonia water were placed in a round-bottomed flask, 200 ml of distilled water was added to the above mixture, and the temperature was 60 °C and fully stirred for 1 h to prepare the complex Ni(NH 3 ) 6 CO 3 ,

[0027] (2) Weigh 50 g of bituminous coal and add it to Ni(NH 3 ) 6 CO 3 In the aqueous solution, wherein the mass of Ni is 5% of the mass of bituminous coal, fully stirred to exchange Ni ion onto the bituminous coal,

[0028] (3) After the obtained precipitate was washed and dried, it was pressed into tablets, crushed and sieved to 60-100 mesh, marked as Sample2.

Embodiment 3

[0029] Example 3 : Prepare sample Sample3

[0030] (1) Weigh 50 g Ni(NO 3 ) 2 , 60 g (NH 4 ) 2 CO 3 and 80 g of 29% ammonia water were placed in a round-bottomed flask, 200 ml of distilled water was added to the above mixture, and the temperature was 60 °C and fully stirred for 1 h to prepare the complex Ni(NH 3 ) 6 CO 3 ,

[0031] (2) Weigh 50 g of anthracite and add to Ni(NH 3 ) 6 CO 3 In the aqueous solution, wherein the mass of Ni is 5% of the mass of anthracite, fully stirred to exchange Ni ion on the anthracite,

[0032] (3) After the obtained precipitate is washed and dried, it is crushed and sieved to a size of 60 mesh to 100 mesh, and marked as Sample3.

[0033] Catalyst sample Ni content and the sample particle size that embodiment 1-3 makes are shown in Table 1

[0034] Table 1

[0035] Catalyst sample Nickel content, wt% (daf) Particle size (mm) Sample1 4.8 0.15 - 0.3 Sample2 4.8 0.15 - 0.3 Sample3 4.7 0.15 - 0.3 ...

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Abstract

The invention belongs to the technical field of catalytic coal gasification catalysts and provides a high-efficiency catalytic coal gasification catalyst and a preparation method thereof. The high-efficiency catalytic coal gasification catalyst takes a complex Ni(NH3)6CO3 as a catalyst precursor, active ingredients are uniformly dispersed on a coal base by adopting an ion exchange technique, and loading capacity of the active ingredients is 2-8%. When the prepared catalytic coal gasification catalyst is applied in a catalytic coal gasification fixed bed reactor, rate of gasification of coal can be effectively improved, and components of coal gas can be improved, so that methane content is increased and utilization rate of the coal is greatly increased.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a high-efficiency coal catalytic gasification catalyst for producing natural gas and a preparation process thereof. Background technique [0002] As one of the efficient and clean utilization methods of coal, the coal gasification process is favored by people because of its wide range of applications, the ability to obtain product gases of different compositions according to needs, and the use of various types of reactors. A large number of laboratory studies have reached the level of industrial application, but how to further improve the efficiency of coal gasification and optimize the composition of product gas has always been the goal pursued by coal gasification researchers. In order to further improve the efficiency of coal gasification and reduce the gasification temperature, people began to consider coal catalytic gasification more than one hundred years ago. More th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J27/20B01J37/30C10J3/46
CPCY02P20/52
Inventor 刘俊郝爱香李海涛赵华
Owner CHINA PETROLEUM & CHEM CORP
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