Methanol
Medium-pressure Methanol Synthesis Catalyst
SCST-252 Medium-pressure methanol synthesis catalyst is a Cu-Zn-Al catalyst. It is suitable for methanol synthesis plant with natural gas, coke oven gas, refinery gas, naphtha, coal, and oil field gas as its feedstock. The applicable pressure of the methanol synthesis plant is 8~18Mpa.
Physical and Chemical Properties
|
Item |
SCST-252 |
|
Appearance |
Luster dark cylinder |
|
Size, mm |
Ф5×4~6 |
|
Strength, N/cm |
≥ 180 |
Operation Conditions
|
Temperature, ℃ |
210~320 |
|
Pressure, MPa |
8.0~18.0 |
|
Space Velocity of Feed Gas, h-1 |
7000~20000 |
|
CO conversion, % |
Before heat resistance: ≥81.0%, After heat resistance: ≥63.0% |
Technical Features
High strength; strong activity and thermal stability, significantly active at 180℃;
Low content of impurities, such as iron and silicon; by-products reduced significantly during use; no wax formation;
Low loss on ignition; low volume shrinkage after reduction; no sinking of catalyst after heating and 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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