CO Shift
Sulfur-Tolerant Shift Catalyst
SCST-233 sulfur-tolerant shift catalyst, with active components of cobalt and molybdenum, is applicable to large, medium or small-sized synthetic ammonia plants that use coal and heavy oil as raw materials. It can be used in cuprammonia washing process after medium temperature shift to reduce the cuprammonia washing load, as well as used in full low temperature shift process replacing the Fe-Cr catalyst to reduce the quantity of steam. The SCST-233 usualy works with SCST-233K anti-toxic agent.
Physical and Chemical Properties
|
Item |
SCST-233 |
SCST-233K |
|
Appearance |
Pink or gray white sphere |
|
|
Size, mm |
Φ4~6 |
|
|
Strength, N/nr. |
≥40 |
≥50 |
Operation Conditions
|
Item |
SCST-233 |
SCST-233K |
|
Inlet Temperature of Shift Converter, ℃ |
180~260 |
205~250 |
|
Operating Temperature, ℃ |
180~450 |
210~280 |
|
Space Velocity, h-1 |
500~3000 |
4000~6000 |
|
Pressure, MPa |
≤3.0 |
|
|
Ratio of Steam/Feed Gas |
0.06 ~ 0.8 |
|
Technical Features
Wide active temperature range; high activity at low temperature; available at a low steam/feed gas ratio.
High strength; no pulverization in water; strength to be increased by more than 50% after vulcanization;
High sulfur resistance and anti-toxicity; good organic sulfur conversion and antioxidant properties;
Re-vulcanizable; partially reactivable by re-vulcanization after partial deactivation to extend service life.
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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