Methanation
Methanation Catalyst
SCST-241 Methanation catalyst is used to remove the low concentration CO and CO2 from hydrogen-rich feed gas of synthetic ammonia plant or other hydrogen production equipment, making it become inert gas methane and easily removed water. At present, more than 200 sets are used in China.
Physical and Chemical Properties
|
Item |
SCST-241 |
|
Appearance |
Gray-black sphere |
|
Size, mm |
Φ3~4, Φ4~6 |
|
Strength, N/nr. |
≥100, ≥120 |
Operation Conditions
|
Content of Sulfur (S) and Chlorine (Cl) in Feed Gas, ppm |
S≤0.1, Cl≤0.03 |
|
Temperature, ℃ |
230~430 |
|
Pressure, MPa |
0.5~32.0 |
|
Space Velocity, h-1 |
≤15000 |
|
CO+CO2 Outlet, ppm |
≤10 |
Features
Short reduction time; saving reduction time and reducing energy consumption as gas entry into the synthesis system within 22 hours;
New auxiliary added; high conversion; high activity at low temperature; trace at the outlet generally less than 5ppm;
No physical water; low volume shrinkage; low strength reduction rate after reduction.
Natural gas to hydrogen technology
After pre-treatment, natural gas or other light hydrocarbon raw materials are mixed with steam and enter a special conversion furnace. Under the action of nickel catalyst SCST-20X, steam reforming reaction occurs to generate conversion gas containing H2, CO2, CO and other components. After recovering heat from the conversion gas, the conversion gas containing CO2 and H2 is obtained through water vapor shift reaction, and then purified by PSA to obtain high-purity H2. The PSA tail gas is returned to the conversion furnace for combustion and heat recovery.
Conventional Methanol-to-Hydrogen Technology
1. Methanol-to-hydrogen technology has certain advantages among various hydrogen production technologies due to its wide availability of raw materials, technological maturity, ease of operation, economic efficiency, and environmental friendliness.
2. Process Flow: Methanol and steam, under specific pressure and temperature conditions, pass through a methanol-steam reforming catalyst bed to generate reformed gas, whose main products are carbon dioxide and hydrogen. This reformed gas is then subjected to pressure swing adsorption to obtain product hydrogen with a purity of 99.0%~99.999%.
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