01 / What it is
Water-Gas Shift Catalysts
Shift catalysts support the conversion of carbon monoxide and steam to carbon dioxide and additional hydrogen. High-temperature and low-temperature shift duties use distinct catalyst families and operating envelopes.
02 / Where it is used
Application areas
- High-temperature shift service
- Low-temperature shift service
- Hydrogen and ammonia plants
- Syngas process trains requiring staged CO conversion
03 / Application context
The operating system matters.
Upstream reformer performance and downstream purification requirements define the shift duty. Startup, reduction or activation procedures, water carryover and trace contaminants can be as important as steady-state inlet conditions.
04 / Selection considerations
Inputs that shape evaluation
| Parameter | Why it matters | Typical evaluation input |
|---|---|---|
| Gas composition | CO, steam and inerts define the reaction duty. | Normal and limiting inlet analyses |
| Temperature profile | Stage selection and expected exotherm affect the catalyst. | Inlet, outlet and bed-temperature history |
| Sulfur regime | Catalyst tolerance differs by family and process design. | Sulfur analysis and upstream purification |
| Condensation risk | Liquid water exposure can damage some catalyst systems. | Dew-point control and trip records |
| Pressure drop | Bed condition can reveal loading or fouling issues. | Differential-pressure history |
05 / Technical inquiry
Useful information to include
- Stage and catalyst family
- Inlet/outlet gas analyses
- Temperature and pressure profile
- Contaminant history
- Startup and operating concerns
Related / Industries
Related / Technologies