Carbon Capture, Natural Gas and Energy Integration
We screen separation technologies, build mass and energy balances, quantify energy penalties and connect gas processing to the power systems it can supply.
An Important Distinction
There Are Two CO₂ Streams, and They Need Different Engineering
Upstream CO₂ in Produced Gas
Reservoir gas can contain CO₂ and H₂S that must be removed to meet fuel or pipeline specification. It is separated in gas-treatment plant and leaves as a concentrated acid-gas stream suitable for conditioning and storage.
Downstream Combustion CO₂
Burning the treated gas creates new CO₂, diluted in flue gas. Capturing it is a separate post-combustion problem, with different equipment, energy penalty and cost.
Technology Screening
Separation Options We Evaluate
Selection depends on CO₂ partial pressure, H₂S content, product specification, scale, energy availability and the CO₂ destination.
| Technology Family | Typically Suited To | Key Engineering Considerations |
|---|---|---|
| Chemical Solvents (Amines) | Low-to-moderate CO₂ content, tight product specifications, post-combustion capture | Regeneration heat duty, solvent degradation, corrosion, H₂S selectivity |
| Physical Solvents | High CO₂ partial pressure feeds | Hydrocarbon co-absorption, refrigeration and pressure-swing requirements |
| Membranes | Bulk CO₂ removal, high CO₂ content, modular or remote sites | Methane slip, pretreatment, often hybridised with solvents |
| Cryogenic & Fractionation | Very high CO₂ content gas | Freeze-out management, refrigeration energy, NGL integration |
| Adsorption | Polishing duties and smaller streams | Cycle design, adsorbent life, water management |
Services
What We Deliver
Gas Resource & Composition Assessment
Treating duty, CO₂ volumes and their variability over field life.
Preliminary Process Engineering
Process concepts, heat and material balances and preliminary equipment sizing.
Capture Technology Screening
Structured comparison of separation routes on specification, energy, footprint and cost.
CO₂ Conditioning & Pathways
Dehydration, compression to dense phase, impurity limits and transport, storage or utilisation options.
Gas-to-Power Integration
Treated gas linked to turbines, engines or fuel cells, with power, heat and emissions balanced together.
Techno-Economic Feasibility
Capital and operating cost screening, energy penalty, sensitivity and risk analysis.
Built in Saskatchewan
Saskatchewan hosts operating carbon-capture infrastructure, a commercial-scale capture test facility and long-running geological storage research. PQEA builds engineering capability here that applies anywhere.
Evaluating CO₂ Separation or Gas-to-Power?
We can scope a first piece of engineering under NDA.