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Methanation catalyst and preparation method thereof

A methanation catalyst, catalyst technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as large environmental impact, complex preparation process, long production cycle, etc., and achieve energy consumption Low, simple process, low equipment requirements

Inactive Publication Date: 2014-09-10
HUANENG CLEAN ENERGY RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of waste water will be generated during the operation, which will have a great impact on the environment
At the same time, for large-scale production of catalysts, there are problems such as complex preparation process, long production cycle, and high energy consumption.

Method used

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  • Methanation catalyst and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0027] The preparation method of the present embodiment comprises the following steps:

[0028] Step 1, take by weighing 294.3 grams of Al(NO 3 ) 3 9H 2 O, 77.6 g Ni(NO 3 ) 2 ·6H 2 O was dissolved in a small amount of deionized water, 310 g of ethylene glycol was added, mixed evenly, and dried at 80° C. for 5 h until a gel-like product was formed.

[0029] Step 2. Transfer the gel product to a crucible or a quartz boat, put it directly into a muffle furnace with a preset temperature of 500°C, and carry out a combustion reaction for 60 minutes. Take out the solid material after combustion, wash it with deionized water, and dry it. After that, the prepared catalyst is 20%NiO / γ-Al 2 o 3 (ethylene glycol A).

[0030] The composition and activity evaluation results of the catalysts are shown in Table 1.

Embodiment 2

[0032] The preparation method of the present embodiment comprises the following steps:

[0033] Step 1, take by weighing 294.3 grams of Al(NO 3 ) 3 9H 2 O, 77.6 g Ni(NO 3 ) 2 ·6H 2 O was dissolved in a small amount of deionized water, 305 g of ethanolamine was added, mixed evenly, and dried at 80° C. for 5 h until a gel-like product was formed.

[0034] Step 2. Transfer the gel product to a crucible or a quartz boat, put it directly into a muffle furnace with a preset temperature of 500°C, and carry out a combustion reaction for 60 minutes. Take out the solid material after combustion, wash it with deionized water, and dry it. After that, the prepared catalyst is 20%NiO / γ-Al 2 o 3 (ethanolamine A).

[0035] The composition and activity evaluation results of the catalysts are shown in Table 1.

Embodiment 3

[0037] The preparation method of the present embodiment comprises the following steps:

[0038] Step 1, take by weighing 294.3 grams of Al(NO 3 ) 3 9H 2 O, 77.6 g Ni(NO 3 ) 2 ·6H 2 O was dissolved in a small amount of deionized water, 250 g of hydrazine hydrate was added, mixed evenly, and dried at 80° C. for 5 h to form a gel-like product.

[0039] Step 2. Transfer the gel product to a crucible or a quartz boat, put it directly into a muffle furnace with a preset temperature of 500°C, and carry out a combustion reaction for 60 minutes. Take out the solid material after combustion, wash it with deionized water, and dry it. After that, the prepared catalyst is 20%NiO / γ-Al 2 o 3 (hydrazine hydrate A).

[0040] The composition and activity evaluation results of the catalysts are shown in Table 1.

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Abstract

The invention relates to a methanation catalyst. The methanation catalyst comprises the following components by weight percent: 5 to 60 percent of catalyst active component NiO and the balance of catalyst carrier Al2O3, and the methanation catalyst also can contain 1 to 25 percent by weight of additive M, wherein the additive M is selected from one or more of oxides of Ce, Ca, Co, La, Zr, Sm, Ba, Mn, Fe, Mo, Ti and Cu. The invention also provides a method for preparing the methanation catalyst. The method comprises the following steps: mixing a catalyst active component precursor, an additive M precursor and a catalyst carrier precursor according to the constituent ratio of the corresponding methanation catalyst, adding organic fuel to be uniformly mixed, and drying the mixture to form a gel product; burning the gel product, and washing and drying a reaction product to obtain the methanation catalyst. The methanation catalyst and the preparation method thereof are simple in operation and environment-friendly, have the advantages of low requirement on equipment, gradual changeability in manipulation, low cost, low energy consumption and the like and are particularly applicable to the industrialized mass production.

Description

technical field [0001] The invention relates to the preparation and application fields of catalysts, in particular to a methanation catalyst and a preparation method thereof. Background technique [0002] my country's energy structure is "more coal, less oil, and gas", with insufficient oil and gas resources, but relatively rich coal resources. During the combustion of coal, a large amount of sulfur oxides, nitrogen oxides and a large amount of dust are emitted, which will cause weather pollution such as acid rain and photochemical smog. Dust, especially PM2.5, will cause human respiratory diseases. Compared with technologies such as coal-to-methanol, coal-to-dimethyl ether, coal direct liquefaction, and coal indirect liquefaction, coal-to-synthetic natural gas (SNG) has high overall heat utilization efficiency (above 50%), low investment cost per unit calorific value, and CO It has the advantages of high conversion rate (close to 100%), high utilization rate of waste heat ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/83B01J37/00C07C9/04C07C1/04
Inventor 王晓龙蒋彪郜时旺肖天存许世森
Owner HUANENG CLEAN ENERGY RES INST
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