Secondary Reforming Catalyst
SCST-211/213 Secondary reforming catalyst is used in the air, oxygen-rich or pure oxygen reforming process with the natural gas, coke oven gas and oilfield associated gas as raw materials. The operation temperature of the converter is high, so the secondary reforming catalyst needs to be paired with SCST-212 thermal protection catalyst to avoid deactivation due to the high temperature impact.
Physical and Chemical Properties
|
Item |
SCST-211 |
SCST-213 |
SCST-212 |
|
Appearance |
Grey black raschig rings |
Grey black raschig rings |
Grey black raschig rings |
|
Production Process |
Co-precipitation |
Sintering impregnation |
|
|
Size (mm) |
Φ19×9×19 |
Φ19×9×19 |
Φ25×10×15 |
|
Strength (N/particle) |
≥450 |
≥450 |
≥500 |
Application Conditions
|
Temperature (℃) |
650~1400 |
|
Pressure (MPa) |
≤5.0 |
|
C Space Velocity of the Feedstock Gas (h-1) |
≤2500 |
|
Ratio of H2O/C |
0.5~3.5 |
Technical Features
Less impurity, stronger heat resistance and no sintering under long running at 1300℃.
Higher conversion than the domestic similar catalyst at the same water/carbon ratio and the same temperature.
Good bed stability and uniform air distribution
Long service life at high temperature atmosphere.
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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