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Sulfur-resistant methanation catalyst and preparation method thereof

A sulfur-resistant methanation and sulfur-resistant methane technology, which is applied in the field of sulfur-resistant methanation catalysts and their preparation, achieves the effects of less land occupation, good CH4 selectivity, and less heat dissipation in the system

Active Publication Date: 2013-05-08
SOUTHWEST RES & DESIGN INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to realize direct methanation of coke oven gas without deep purification, the development and application of such catalysts have not been found at home and abroad, so it is necessary to study a sulfur-tolerant methanation catalyst to fill this gap

Method used

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  • Sulfur-resistant methanation catalyst and preparation method thereof
  • Sulfur-resistant methanation catalyst and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] The sulfur-tolerant methanation catalyst of this embodiment uses Mo, Co and Ni oxides as active components, and Al 2 O 3 As the carrier, with La 2 O 3 As an accelerator, a precipitation catalyst with stearate as a lubricant. Among them, the weight ratio of each component is as follows:

[0032] compositionMo 2 O 3 CoO NiOLa 2 O 3 Al 2 O 3 Stearate Ratio22102905

[0033] The preparation process of the sulfur-tolerant methanation catalyst of this embodiment is as follows figure 1 As shown, the preparation method of the sulfur-tolerant methanation catalyst of this embodiment mainly includes the following steps:

[0034] (1) Weigh the nitrate solids of the active components and accelerators in proportion and add deionized water to prepare a nitrate solution with a total mass content of each component of 15g / L. To the carrier Al 2 O 3 Add deionized water to the aluminum nitrate solid in the aluminum nitrate to prepare a nitrate solution with a mass content of 50g / L;

[003...

Embodiment 2

[0041] The sulfur-tolerant methanation catalyst of this embodiment uses Mo, Co and Ni oxides as active components, and Al 2 O 3 As the carrier, with La 2 O 3 It is a precipitation catalyst with graphite as lubricant as a promoter. Among them, the weight ratio of each component is as follows:

[0042] compositionMo 2 O 3 CoO3 NiOLa 2 O 3 Al 2 O 3 graphite Ratio55201852

[0043] The preparation process of the sulfur-tolerant methanation catalyst of this embodiment is as follows figure 1 As shown, the preparation method of the sulfur-tolerant methanation catalyst of this embodiment mainly includes the following steps:

[0044] (1) Weigh the nitrate solids of the active components and accelerators in proportion and add deionized water to prepare a nitrate solution with a total mass content of each component of 25g / L. To the carrier Al 2 O 3 Add deionized water to the aluminum nitrate solid in the aluminum nitrate to prepare a nitrate solution with a mass content of 45g / L;

[004...

Embodiment 3

[0051] The sulfur-tolerant methanation catalyst of this embodiment uses Mo, Co and Ni oxides as active components, and Al 2 O 3 As the carrier, with La 2 O 3 As an accelerator, a precipitation catalyst with paraffin as a lubricant. Among them, the weight ratio of each component is as follows:

[0052] compositionMo 2 O 3 CoO3 NiOLa 2 O 3 Al 2 O 3 paraffin Ratio44153953

[0053] The preparation process of the sulfur-tolerant methanation catalyst of this embodiment is as follows figure 1 As shown, the preparation method of the sulfur-tolerant methanation catalyst of this embodiment mainly includes the following steps:

[0054] (1) Weigh the nitrate solids of the active components and accelerators by adding deionized water to prepare a nitrate solution with a total mass content of each component of 20 g / L. To the carrier Al 2 O 3 Add deionized water to the aluminum nitrate solid in the aluminum nitrate to prepare a nitrate solution with a mass content of 55g / L;

[0055] (2) Add...

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Abstract

The invention discloses a sulfur-resistant methanation catalyst, which is used for preparing methane from coke oven gas. The catalyst is a precipitation type catalyst which mainly adopts oxides of Mo, Co and Ni as active ingredients, Al2O3 as a carrier and La2O3 as an accelerant. The catalyst can be used for realizing good methanation of coke oven gas containing 1-3 ppm of H2S at1.0-3.0 MPa and 280-450 DEG C on the premise of not deeply purifying coke oven gas, and also has good selectivity. The invention also discloses a preparation method of the sulfur-resistant methanation catalyst.

Description

technical field [0001] The invention belongs to the technical field of catalysts, in particular to a sulfur-resistant methanation catalyst and a preparation method thereof. Background technique [0002] Since the 1970s, due to the fact that the reserves of oil and natural gas are not suitable for the sharply increasing needs worldwide, people have realized that the development of new gasification processes (such as hydrogenation gasification , catalytic gasification, etc.) to produce substitute natural gas (SNG), but also to accelerate the development of methanation process, in order to use the industrialized gasification method to produce medium-calorific value coal gas, and then produce SNG through methanation. [0003] In 2010, my country's coke production reached 388 million tons, accounting for more than 60% of the world's coke production, and at the same time more than 77.6 billion cubic meters of coke oven gas was produced by-product. In recent years, through the imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889
Inventor 李玉富李泽军赵丹李启强颜智姜瑛蒙高碧
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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