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Sulfur tolerant methanation catalyst and preparation method thereof

A technology for sulfur-resistant methanation and catalyst, which is applied in catalyst activation/preparation, carbon compound catalysts, catalysts, etc., can solve problems such as shortening production cycle, and achieve the effect of improving interaction

Active Publication Date: 2019-03-08
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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  • Sulfur tolerant methanation catalyst and preparation method thereof
  • Sulfur tolerant methanation catalyst and preparation method thereof
  • Sulfur tolerant methanation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Feeding is carried out according to the mass percentage of oxides shown in the table below.

[0049] MoO 3

NiO

co 3 o 4

CeO 2

ZrO2

al 2 o 3

15％

5％

5％

5％

21％

49％

[0050] Such as figure 1 Process flow shown:

[0051] 1. Prepare additives and carrier precursors by precipitation method: Weigh 38.9g nickel nitrate hexahydrate, 25.2g cerium nitrate hexahydrate, 36.2g cobalt nitrate hexahydrate, 146.3g zirconium nitrate pentahydrate, 721.12g nonahydrate Aluminum nitrate is dissolved in deionized water and the configuration metal ion concentration is the solution A of 1.5mol / L, takes by weighing 720g anhydrous sodium carbonate, and the configuration solubility is the sodium carbonate solution B of 1.5mol / L, mix A, B two kinds of solutions Heated in a water bath to 75°C, then co-precipitated in parallel, the flow rates of the two solutions of A and B were 51.1ml / min and 100.7ml / min respectively, the pH value o...

Embodiment 2

[0055] Feeding is carried out according to the mass percentage of oxides shown in the table below.

[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 and dissolve It is the solution A of 1.5mol / L that configuration metal ion concentration is 1.5mol / L in deionized water, takes by weighing 605g anhydrous sodium carbonate, configuration solubility is the sodium carbonate solution B of 1.5mol / L, with A, B two kinds of solutions are all water-bath heated to 65°C, then co-precipitate in parallel, 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, and the precipitation takes 35...

Embodiment 3

[0061] Feeding is carried out according to the mass percentage of oxides shown in the table below.

[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 for configuration For solution A with a metal ion concentration of 1.5mol / L, weigh 737g of anhydrous sodium carbonate, configure sodium carbonate solution B with a solubility of 1.5mol / L, heat both solutions A and B to 65°C in a water bath, and then Flow co-sedimentation, the flow rates of A and B solutions are 51.5ml / min and 92.76ml / min respectively, the pH value of the precipitate is 8.5-8.7, and the precipitation takes 50min. After the precipitation is completed, ...

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Abstract

The invention relates to a sulfur tolerant methanation catalyst and a preparation method thereof. A preparation method using a precipitation-load-spray drying-roasting preparation technology is concretely used. The catalyst can be applied to synthesis gas sulfur tolerance methanation for producing natural gas. The preparation method disclosed by the invention has the advantages that the ingredients are flexible and adjustable; the raw materials can be simply, conveniently and easily obtained; the preparation process is simple; the cost is low.

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 in coal, poor in oil, and low in gas" is my country's resource endowment. The development of coal-based natural gas is an important direction of the coal-based gaseous energy industry, which can effectively promote the clean utilization of coal and alleviate the contradiction between supply and demand of natural gas. The production of SNG is also one of the key development projects of my country's "13th 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, conversion, desulfurization, decarbonization, and methanation. It is also a technology widely used in industry at present. Methanation Nickel-based catalysts are general...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/887B01J23/888B01J23/883B01J37/03B01J35/10C07C9/04C07C1/04
CPCC07C1/0435B01J23/002B01J23/883B01J23/8871B01J23/8885B01J37/0045B01J37/031C07C2523/887C07C2523/888C07C2523/883B01J2523/00B01J35/30B01J35/615C07C9/04B01J2523/31B01J2523/3712B01J2523/48B01J2523/68B01J2523/845B01J2523/847B01J2523/69B01J2523/3706
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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