Decarbonisation Technology May 2022 Issue

CO 2 to compression

Treated ue gas

Sludge euent


Thermal reclaimer

Reux accumulator

Wash water cooler

Wash water section


CO stripper

Lean amine cooler

Main absorption section

Reux pumps

Wash water pumps

Lean amine feed pumps

CO MVR compressor

Lean amine tank

Main absorption section


Steam from OSBL


Flue gas from pre- scrubber

Lean rich exchanger

Steam condensate level pot

Intercooled section

Intercooler pumps

CO absorber

Steam condensate ash pot

Lean amine pumps

Condensate to OSBL

Rich amine pumps

Figure 1 Cansolv CO 2 - simplified PFD

to continuously enhance CC solutions to make projects affordable. Technip Energies and Shell have a team for project delivery and integration of a joint axis of R&D efforts, enabling us to deliver both capital and operating cost reductions in our combined offerings for CC plants. The Cansolv CO₂ capture technology, integrated into the Shell technology portfolio through the acquisition by Shell of Cansolv Technologies Inc. in 2008, is positioned among the leading technologies for CO₂ removal (Shell, 2022). Through projects like SaskPower’s Boundary Dam, the technology has been deployed at the large scale (1 MT/y and above) that

characterises many CCUS projects and also at the much smaller scale expected to characterise many CO₂ capture applications in the future. The Cansolv CO₂ capture system is an amine- based technology using Shell’s proprietary Cansolv DC-103 absorbent. The process line- up is shown in Figure 1 , and relies on standard equipment (vessels, pumps, exchangers) and mass transfer internals (structured packing). The CO₂ is captured from the cooled gas by contact with the aqueous (lean) amine absorbent in the absorber, where multiple structured packing beds are used to promote mass transfer while keeping pressure drop low. Capture efficiencies of up to 99% can be achieved (depending on the application),

Figure 2 SaskPower Boundary Dam Capture Project in Canada

Courtesy of Shell


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