Introduction to methanation catalysts
Cas-kr-j01-k methanation catalyst is a new type of titanium-aluminum-rare-earth nickel catalyst, which is suitable for methanation device in chemical industry, to remove low concentration of carbon monoxide and carbon dioxide from hydrogen-rich feedstock gas, making it become inert gas methane and easily removed water, so as to achieve the purpose of gas purification.
The catalyst has unique performance, high strength, high pore volume, high activity and easy to handle, operating under high pressure and high airspeed is obviously superior to other catalysts, widely used in large, medium and small sized ammonia plants and natural gas manufacturing industries.
Physical properties of methanation catalyst
1. Appearance: grey-black sphere
2, specification (mm) : 4.5 ~ 5.5 Φ, Φ 3.0 ~ 4.0
3. Particle strength (N/ piece) : ≥120
4. Bulk specific gravity: 0.9±0.03
5. Specific surface area (m2/g) : ≥120
Main operating conditions of methanation catalyst
The content of S in the raw gas is required: ≤0.1 PPm
Cl- content in raw gas: ≤ 0.03PPm
Starting temperature: 210℃
Operating temperature range: 250 ~ 270℃
Operating airspeed: ≤10000h-1
How methanation catalysts work
The main function of methanation process is to convert CO and CO2, which are toxic to the catalyst in the subsequent process, into methane, so as to purify hydrogen, improve the calorific value of product gas and reduce environmental pollution. For example, methanation in the ammonia industry prevents iron catalyst poisoning by reducing CO and CO2 concentrations to below 10ppm. In addition, methanation is also used for the purification and cleaning of natural gas.
Precautions for use and maintenance of methanation catalyst
1) the content of S in raw gas is required: ≤0.1PPm
2) required Cl- content in raw gas: ≤0.03PPm
3) raw gas import CO+CO2 volume is required to be < 0.7%
4) it is important to maintain the normal operating temperature: high concentration of CO2 over temperature will cause carbon deposition reaction; The excess temperature caused by high CO concentration in the inlet deactivates the catalyst, mainly forming carbonyl nickel. During production, the temperature cannot be controlled too low. Low temperature gas conduction is the main reason for the deactivation of methanation catalyst.
Label: methanation catalyst precious metal catalyst jiangxi co., LTD