CCUS

Heat exchangers for carbon capture, purification and liquefaction

Application-specific equipment for amine regeneration, overhead condensation, process-gas cooling and low-temperature CO₂ liquefaction.

Typical CCUS positions

Heat-transfer duties throughout the capture train

Recovers heat between regenerated lean amine and CO₂-rich solution.

Steam heating and partial evaporation of lean amine solution.

Condenses water and cools desorbed CO₂-rich gas leaving the stripper.

Recovers or rejects heat from hot steam condensate.

Cools compressed or purified CO₂ before drying and downstream treatment.

Condenses and subcools CO₂ against low-temperature refrigerant.

Design considerations

Amine service	Corrosion, foaming, fouling and temperature approach must be reviewed.
Reboiler	Stable two-phase distribution and vapor disengagement are essential.
Overhead condenser	Gas composition, water condensation and non-condensables determine area and pressure drop.
CO₂ cooling	High pressure, variable physical properties and low-temperature material requirements apply.
Liquefaction	Refrigerant boiling and CO₂ condensation must be allocated across the exchanger.

Representative project

REGENERATION REBOILER

Steam 130/120°C; lean amine 90/105°C with partial evaporation; 10 barG design pressure; 316L plates.

OVERHEAD CONDENSER

Desorbed gas 95/40°C; cooling water 36/42°C; 10 barG; 316L plates and lined shell.

CONDENSATE COOLER

Condensate 120/40°C against cooling water; 16 barG design pressure.

CO₂ LIQUEFIER

Crude CO₂ 40/−18°C against R507A at −24°C; 30 barG; low-temperature carbon-steel shell.