product Overview
The Cryogenic CO₂ Capture System is an industrial gas separation unit that removes CO₂ by cooling gas streams to the CO₂ condensation temperature, converting CO₂ into liquid form for separation and purification.
Key Technical Specifications
|
Item |
Specification |
|
Technology |
Cryogenic CO₂ Capture System (Physical Phase Separation + Distillation Purification) |
|
Gas Source |
Flue gas / Natural gas / Industrial off-gas |
|
CO₂ Concentration |
Typically 5% – 30% (design dependent) |
|
Solid Impurities |
≤5 μm (after pretreatment) |
|
Moisture Content |
≤10 ppm (after dehydration unit) |
|
H₂S Tolerance |
≤20 ppm (with optional desulfurization module) |
|
Processing Range |
5,000 – 300,000 Nm³/h |
|
Operating Pressure |
1.0 – 6.0 MPaG |
|
Cryogenic Temperature |
Down to -60°C |
|
Pre-cooling Temperature |
0 to -10°C |
|
CO₂ Capture Efficiency |
≥95% (standard configuration) / up to 99.5% (optimized design) |
|
CO₂ Outlet Concentration |
<1% / down to ≤0.1% |
|
CO₂ Product Purity |
≥99.0% (industrial liquid CO₂) |
|
High-Purity Option |
≥99.9% (food / electronic / specialty grade CO₂) |
|
CO₂ Phase |
Liquid CO₂ (standard) / Supercritical CO₂ (optional integration) |
|
Separation Method |
Condensation + Phase Separation + Distillation |
|
Distillation Pressure |
0.3 – 0.5 MPaG |
|
Distillation Temperature |
-50 to -55°C |
|
Cooling Method |
Multi-stage refrigeration (Propane pre-cooling + Mixed Refrigerant cycle) |
|
Refrigerant Composition |
N₂ / CH₄ / C₂H₆ / C₃H₈ mixture |
|
Liquid CO₂ Storage |
-56.6°C, 0.5 – 1.0 MPaG |
|
Storage Type |
Cryogenic insulated storage tank |
|
Energy Optimization |
10–15% lower than conventional cryogenic baseline (process-optimized design) |
|
Heat Integration |
The gas–gas heat exchange recovery system included |
|
Piping Material |
304L stainless steel |
|
Heat Exchanger |
Aluminum alloy 5083 / cryogenic-grade alloys |
|
Design Life |
≥20 years |
|
MTBF |
>12,000 hours |
|
Test Condition |
100-hour continuous full-load factory test at cryogenic conditions |
|
Standards |
ASME BPVC / ISO 14064 / EPA CO₂ measurement methodology / GB150 pressure vessel code |
|
System Configuration |
Modular skid-mounted or EPC integrated plant design |
Working principle
Gas Pretreatment
- Dust removal ≥5 μm
- Moisture reduction to ≤10 ppm
- H₂S removal at ≥20 ppm feed concentration
Pre-Cooling
- Gas cooling from 20–30°C to 0 to -10°C
- Moisture and light hydrocarbons removal
Cryogenic Cooling
- -40 to -50°C (propane refrigeration stage)
- -55 to -60°C (mixed refrigerant stage)
CO₂ Condensation & Separation
- Operating conditions: -55 to -60°C, 1.0–6.0 MPaG
- CO₂ liquefaction and phase separation from non-condensable gases
Distillation Purification
- Operating pressure: 0.3–0.5 MPaG
- Operating temperature: -50 to -55°C
CO₂ purity up to ≥99.9%
Storage & Transport
- Storage conditions: -56.6°C, 0.5–1.0 MPaG
- Liquid or supercritical CO₂ output
Advantages of Cryogenic CO₂ Capture
- CO₂ phase separation via cryogenic condensation without chemical absorbents.
- Multi-stage propane pre-cooling and mixed refrigerant refrigeration for low-temperature operation.
- Distillation for removal of residual non-condensable gases from liquid CO₂ stream.
- Heat integration between inlet and outlet streams for internal energy recovery.
- Closed-loop cryogenic refrigeration with multi-stage temperature control.
- Liquid CO₂ handling system for industrial transfer and storage conditions.
Applications
- Coal-fired and gas-fired power plant flue gas CO₂ capture
- Steel and metallurgy process gas decarbonization
- Natural gas processing: CO₂ removal and recovery
- Cement production flue gas carbon capture systems
- Chemical and petrochemical off-gas CO₂ separation
- CCUS (Carbon Capture, Utilization and Storage) projects
- EOR (Enhanced Oil Recovery) CO₂ injection systems
Manufacturing & Quality Assurance
Quality Control System:
- ASME BPVC pressure vessel standards
- ISO 9001 quality management system
- ISO 14064 carbon accounting methodology
- IEC electrical and control standards
- EAC certification requirements
- 5083 aluminum alloy heat exchangers
- Factory acceptance testing (FAT) prior to shipment
-
-60°C cryogenic performance testing
UT / RT weld inspection (NDT testing)
Material selection:
-
304L stainless steel pipelines
5083 aluminum alloy heat exchangers
FAQ
Q: What utilities are required for system operation?
A: Electrical power supply, refrigeration cooling utilities, and instrument air for control systems.
Q: Can the system be delivered as a modular unit?
A: Yes. Skid-mounted modules or fully integrated EPC plant configurations are available depending on project requirements.
Q: What support is provided during commissioning?
A: On-site commissioning support is provided for start-up, parameter adjustment, and performance stabilization.
Q: What documentation is included with delivery?
A: Engineering drawings, operation manuals, inspection reports, and quality certificates are included.
Q: Can the system be expanded in the future?
A: Yes. Modular design allows capacity expansion and integration of additional process units.
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