SWCHEM’s CO purification technology is used to produce high-purity CO from CO-containing industrial gas mixtures using a new dedicated CO adsorbent.
The feed gas enters the PSA unit, where impurities such as H₂, N₂ and CH₄ are separated. CO is selectively adsorbed and then recovered as product gas through vacuum desorption.
This technology is suitable for CO purification from water gas, semi-water gas, gasifier gas, blast furnace gas, converter gas and other CO-containing industrial gas streams.
The feed gas is introduced into the PSA unit. Impurities such as H₂, N₂, CH₄ and other components are separated from the gas mixture, while CO is selectively adsorbed by the adsorbent.
During vacuum desorption, the adsorbed CO is released from the adsorbent and recovered as product gas. Through the cyclic operation of multiple adsorbers, the system enables continuous CO purification and recovery.
Applicable feed gases include:
| Item | Data |
|---|---|
| Pressure | 0.1-4.0 MPa(g) |
| Temperature | Ambient temperature |
| Item | Data |
|---|---|
| Product | CO |
| CO purity | 96-99.9 vol%, adjustable according to customer requirements |
| CO recovery | 60–95% |
| Main impurities | N₂, CH₄, H₂ |
| Item | Data |
|---|---|
| Product | Desorbed gas |
| CO recovery | 60-90% |
| Pressure | Atmospheric pressure to 20 kPa |
| Temperature | Ambient temperature |
Note: CO recovery depends on feed gas composition, feed pressure and required product CO purity.
The purification units are controlled by dedicated controllers and instruments. Depending on the unit scale, automation level and customer control requirements, a DCS control system consistent with the customer’s main plant may be used, or a standalone PLC control system may be selected.
In addition to conventional PSA sequence control, loop control and other control functions, SWCHEM also provides specialized control strategies for fully automatic load adjustment, fault diagnosis and fault isolation.
The system can support adaptive optimization, self-diagnosis and fault isolation, improving operational flexibility and helping ensure long-term, stable and safe operation of the unit.
SWCHEM provides:
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