Preparation method of thermometal methanation catalyst with high-temperature resistance
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A methanation catalyst and bimetal technology, which is applied in the field of preparation of high temperature resistant bimetal methanation catalysts to achieve the effects of improving stability, good catalytic ability, and accurate data.
Inactive Publication Date: 2012-06-27
TAIYUAN UNIV OF TECH
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At present, the preparation of high-temperature-resistant bimetallic methanation catalysts is still a scientific research blank, and further research is needed
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Embodiment 1
[0090] To prepare a high-temperature-resistant bimetallic methanation catalyst, the proportion of its chemical substances can also be as follows:
[0097] The preparation method is the same as the technical scheme.
Embodiment 2
[0099] Prepare the performance measurement of high-temperature-resistant bimetallic methanation catalyst, the method is as follows:
[0100] Analyzer: Shanghai Haixin Chromatography Co., Ltd. GC-950 gas chromatograph, thermal conductivity cell detector, chromatographic column is carbon molecular sieve TDX-01, carrier gas Ar, mainly analyzes H in reformed gas 2 , CO, CO 2 and CH 4 ; Capillary column is Agilent PLOT Al 2 o 3 , the inner diameter of the column is 0.35mm, and the column length is 50m. 2 and above higher hydrocarbons;
[0101] At a temperature of 430°C, the catalyst was reduced for 4 hours by raising the pressure to 0.5 MPa with hydrogen, and the reduction space velocity was 2000 hours. -1 ; After the reduction is completed, disconnect the hydrogen and feed the reaction gas, the total space velocity of the reaction gas is 16000h -1 , carry out methanation catalytic conversion reaction at 500°C, the catalyst load is 2.00g, the inner diameter of the reactor is ...
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Abstract
The invention relates to a preparation method of a thermometal methanation catalyst with high-temperature resistance, which comprises the following steps of: taking alumina as a vector, taking nickel oxide as a main active component, taking cobalt oxide as a second active component, taking lanthanum oxide as an adjuvant and mixing the above oxides evenly by adopting a double-hydrolyzing homogeneous-phase coprecipitation method of inorganic salt so as to prepare the methanation catalyst by filtering, washing, drying and calcining. The dispersion of each component in the catalyst is uniform, the stability and the coagulating resistance are good, the quick methanation of the catalyst can be realized by mixing with raw gas, and the catalyst can have the function of effectively resisting coagulation and accumulation in a high-temperature environment generated in the quick reaction process and has favorable catalytic capability at the temperature of 500 to 700 DEG C. The preparation method has short technological process, reasonable mixture ratio of materials and full and accurate data, is easy to operate and is a very ideal preparation method of the thermometal methanation catalyst with high-temperature resistance.
Description
technical field [0001] The invention relates to a preparation method of a high-temperature-resistant bimetallic methanation catalyst, which belongs to the technical field of preparation and application of catalysts for producing synthetic natural gas from coke oven gas and coal. Background technique [0002] Natural gas is a clean fuel with high calorific value. Its main component is methane. After burning, it only emits carbon dioxide and water vapor, and does not produce waste water and waste residue. With the rapid development of my country's economy, the demand for resources is on the rise. Natural gas The consumption of natural gas is growing at a rate of 10%. However, China is a country rich in coal, poor in oil, and low in gas. Natural gas resources are extremely scarce and cannot meet the country's demand for clean energy. The contradiction between supply and demand of natural gas is prominent. Multiple ways of supply can meet the growing market demand; using coke oven...
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