Purification
ZnO Desulfurizer
SCST-302 ZnO desulfurizer is used for removing small-molecular organic sulfur such as H2S, CS2, COS and mercaptan from coal, natural gas, coke oven gas, oilfield gas, refinery gas, synthetic gas, conversion gas and liquid raw materials such as liquid hydrocarbons, propylene and naphtha, to protect catalysts containing nickel, copper, iron and precious metals such as steam conversion, low temperature shift, methanation, methanol, synthetic ammonia, polypropylene and carbonyl synthesis.
Physical and Chemical Properties
|
Item |
SCST-302 |
|
Appearance |
Grey white or light yellow strips |
|
Size (mm) |
Φ3~5×(5~15) |
|
Strength (N/cm) |
≥40 |
Application Conditions
|
Temperature (℃) |
200~400 |
|
Pressure (MPa) |
normal~30.0 |
|
Space Velocity (h-1) |
500~3000 (gas); 0.5~3 (liquid) |
|
Inorganic Sulfur at the Outlet (ppm) |
≤0.1 |
Technical Features
1) With good water resistance, in the process of water vapor reaction, the catalyst has features of high strength, difficult pulverization and low running resistance.
2) Resistant to high pressure and high space velocity, having a longer service life under a high pressure and high space velocity operation than domestic similar catalysts.
3) Due to new production process, the catalyst has a large sulfur capacity, with the sulfur capacity higher than 30% at a certain temperature.
4) Large specific surface area, and high conversion rate, with the H2S at the catalyst outlet generally less than 0.1ppm.
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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