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Why choose HPC over Amines?

Comparing HPC and Amines


When deciding on final capture technology, many of our clients perform detailed comparisons of HPC vs Amines, the most mature solutions on the market. While both are proven technologies for post-combustion CO₂ capture, there are significant differences in energy efficiency, safety, cost, and operational complexity. 

Capsol’s HPC-based carbon capture solutions offer a safe, energy-efficient, and operationally simple path to full-scale CO₂ capture. They are ideally suited for industrial-scale applications and stands apart from standard HPC systems through innovations that optimize performance and reduce total cost of ownership.

The table below presents a side-by-side comparison of Capsol’s HPC solution and Amine-based systems.

Capsol Technologies' flexible CapsolEoP™ carbon capture solution

How Capsol’s HPC outperforms Amines

Solvent type

✓  Capsol HPC: Non-toxic Potassium Carbonate

✓  Amines: Hazardous amines (e.g. MEA, DEA)

 

Energy use

✓  Capsol HPC: Low, with integrated heat reuse

✓  Amines: Requires high energy regeneration

 

Water use

✓  Capsol HPC: Low water need

✓  Amines: High cooling and solvent makeup demand

 

Solvent degradation

✓  Capsol HPC: Chemically stable solvent. Less replenishment than amines

✓  Amines: Degrades quickly. Frequent replenishment

 

Operational complexity

✓  Capsol HPC: Simple, noncorrosive, easy to operate

✓  Amines: Complex, corrosive, hazardous

 

Electric operation

✓  Capsol HPC: Fully electric possible

✓  Amines: often steam-based, less flexible

 

HSE profile

✓  Capsol HPC: Non-hazardous, easier permitting

✓  Amines: Toxic, flammable, strict safety handling

 

Long-term cost (opex)

✓  Capsol HPC: Lower due to stability and energy savings

✓  Amines: Higher due to degradation and heat demand

Solvent type

✓  Capsol HPC: Non-toxic Potassium Carbonate

✓  Amines: Hazardous amines (e.g. MEA, DEA)

 

Energy Use

✓  Capsol HPC: Low, with integrated heat reuse

✓  Amines: Requires high energy regeneration

 

Water Use

✓  Capsol HPC: Low water need

✓  Amines: High cooling and solvent makeup demand

 

Solvent Degradation

✓  Capsol HPC: Chemically stable solvent. Less replenishment than amines

✓  Amines: Degrades quickly. Frequent replenishment

 

Operational Complexity

✓  Capsol HPC: Simple, noncorrosice, easy to operate

✓  Amines: Complex, corrosive, hazardous

 

Electric Operation

✓  Capsol HPC: Fully electric possible

✓  Amines: often steam-based, less flexible 

 

HSE Profile

✓  Capsol HPC: Non-hazardous, easier permitting

✓  Amines: Toxic, flammable, strict safety handling

 

Long-Term Cost (opex)

✓  Capsol HPC: Lower due to stability and energy savings

✓  Amines: Higher due to degradation and heat demand

 

What makes CapsolEoP the better choice?

Lower energy demand for higher CO₂ concentrations
Integrated heat recovery reduces operational costs per tonne of CO₂ captured.

Safer and easier to permit
Non-toxic, non-corrosive chemistry improves plant safety and simplifies regulatory approval.

Proven for scale
Ideal for continuous operation in large-scale carbon capture systems with less solvent replenishment.

Flexible integration
Can operate fully electric - easier to retrofit and run in modern industrial plants.

Real-world ready


Stockholm Exergi
 is implementing Capsol’s HPC-based system in one of Europe’s largest BECCS (Bioenergy with Carbon Capture and Storage) projects - capturing up to 800,000 tonnes of CO₂ per year.

See full project

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