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A sulfur-resistant methanation catalyst and its preparation method

A sulfur-resistant methanation and catalyst technology, applied in the direction of catalyst activation/preparation, carbon compound catalyst, catalyst, etc., can solve the problems of shortening the production cycle, achieve the effect of improving activity and stability, improving interaction, and realizing clean production

Active Publication Date: 2022-02-08
XINDI ENERGY ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN105417570A discloses a preparation method of spinel composite oxide, which also uses spray drying, and believes that spray drying can complete the dehydration and granulation process at the same time in a very short time, shortening the production cycle and making the precursor The components will not segregate, and the spray drying methods used in the two patents only focus on drying

Method used

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  • A sulfur-resistant methanation catalyst and its preparation method
  • A sulfur-resistant methanation catalyst and its preparation method
  • A sulfur-resistant methanation catalyst and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The mass percentage of oxides shown in the table below is used for feeding.

[0049] MoO 3

NiO Co 3 O 4

CeO 2

ZrO2 Al 2 O 3

15％ 5％ 5％ 5％ 21％ 49％

[0050] like figure 1 Process flow shown:

[0051] 1. Preparation of additives and carrier precursors by precipitation method: Weigh 38.9g of nickel nitrate hexahydrate, 25.2g of cerium nitrate hexahydrate, 36.2g of cobalt nitrate hexahydrate, 146.3g of zirconium nitrate pentahydrate, 721.12g of nonahydrate Dissolve aluminum nitrate in deionized water to prepare solution A with a metal ion concentration of 1.5 mol / L, weigh 720 g of anhydrous sodium carbonate, configure sodium carbonate solution B with a solubility of 1.5 mol / L, and mix both solutions A and B. The water bath was heated to 75℃, and then co-precipitated. The flow rates of the two solutions A and B were 51.1ml / min and 100.7ml / min, respectively. The pH value of the precipitation was 7.5-7.8. The precipitation t...

Embodiment 2

[0055] The mass percentage of oxides shown in the table below is used for feeding.

[0056] MoO 3

NiO Co 3 O 4

CeO 2

ZrO 2

Al 2 O 3

25％ 3％ 2％ 3％ 30％ 37％

[0057] 1. Preparation of additives and carrier precursors by precipitation method: Weigh 23.4g of nickel nitrate hexahydrate, 15.1g of cerium nitrate hexahydrate, 14.5g of cobalt nitrate hexahydrate, 209.1g-, 544.5g of aluminum nitrate nonahydrate to dissolve Prepare solution A with a metal ion concentration of 1.5 mol / L in deionized water, weigh 605 g of anhydrous sodium carbonate, configure sodium carbonate solution B with a solubility of 1.5 mol / L, and heat both solutions A and B in a water bath to 65 ℃, then co-precipitate, the flow rates of A and B solutions are 49.7ml / min and 108.7ml / min respectively, the PH value of the precipitation is 8.0-8.3, the precipitation time is 35min, after the precipitation is completed, age at 65 ℃ for 2h, filter, The resulting prec...

Embodiment 3

[0061] The mass percentage of oxides shown in the table below is used for feeding.

[0062] MoO 3

WO 3

NiO Co 3 O 4

ZrO 2

Al 2 O 3

15％ 8％ 3％ 2％ 20％ 52％

[0063] 1. Preparation of additives and carrier precursors by precipitation method: Weigh 23.4g of nickel nitrate hexahydrate, 139.4g of zirconium nitrate pentahydrate, 14.5g of cobalt nitrate hexahydrate, and 765g of aluminum nitrate nonahydrate and dissolve them in deionized water. Solution A with a metal ion concentration of 1.5 mol / L, weigh 737 g of anhydrous sodium carbonate, configure sodium carbonate solution B with a solubility of 1.5 mol / L, heat both solutions A and B in a water bath to 65 ° C, and then mix Flow co-precipitation, the flow rates of the two solutions A and B are 51.5ml / min and 92.76ml / min respectively, the pH value of the precipitation is 8.5-8.7, the precipitation time is 50min, after the precipitation is completed, age at 80 °C for 2h, filter and ...

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Abstract

The invention relates to a sulfur-resistant methanation catalyst and a preparation method, specifically a preparation method using a precipitation-loading-spray drying-calcination preparation technology, and the catalyst can be applied to the sulfur-resistant methanation of synthesis gas to produce natural gas. The preparation method disclosed by the invention has the advantages of flexible and adjustable components, simple and easy-to-obtain raw materials, simple preparation process and low cost.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a sulfur-resistant methanation catalyst and a preparation method. Background technique [0002] "Rich coal, lean oil, and less gas" is my country's resource endowment. The development of coal-based natural gas is an important direction for the coal-based gaseous energy industry, which can effectively promote the clean utilization of coal and alleviate the contradiction between natural gas supply and demand. At the same time, coal-based synthesis gas SNG production is also one of the key development projects of my country's "Thirteenth Five-Year Plan". At present, there are two types of coal-based synthesis gas-to-natural gas processes. One is indirect methanation technology, which mainly includes a series of steps such as coal gasification, shift, desulfurization, decarbonization, and methanation. It is also a technology widely used in industry at present. Nickel-based cataly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/887B01J23/888B01J23/883B01J37/03B01J35/10C07C9/04C07C1/04
CPCC07C1/0435B01J23/002B01J23/883B01J23/8871B01J23/8885B01J35/002B01J35/1019B01J37/0045B01J37/031C07C2523/887C07C2523/888C07C2523/883B01J2523/00C07C9/04B01J2523/31B01J2523/3712B01J2523/48B01J2523/68B01J2523/845B01J2523/847B01J2523/69B01J2523/3706
Inventor 堵俊俊刘鹏翔张伟康张永泽冯璐瑶李晨佳史立杰常俊石
Owner XINDI ENERGY ENG TECH
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