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A CO2 Compression and Dehydration System Utilizing Absorption Chillers and Heat Recovery Concepts

[+] Author Affiliations
David Hasler, David Stopek, Roger Smith

Sargent & Lundy LLC, Chicago, IL

John Klumpyan

NRG Energy, Inc., Princeton, NJ

Paper No. ICONE20-POWER2012-54576, pp. 809-813; 5 pages
doi:10.1115/ICONE20-POWER2012-54576
From:
  • 2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference
  • Volume 4: Codes, Standards, Licensing, and Regulatory Issues; Fuel Cycle, Radioactive Waste Management and Decommissioning; Computational Fluid Dynamics (CFD) and Coupled Codes; Instrumentation and Controls; Fuels and Combustion, Materials Handling, Emissions; Advanced Energy Systems and Renewables (Wind, Solar, Geothermal); Performance Testing and Performance Test Codes
  • Anaheim, California, USA, July 30–August 3, 2012
  • Conference Sponsors: Nuclear Engineering Division, Power Division
  • ISBN: 978-0-7918-4498-4
  • Copyright © 2012 by ASME

abstract

On a recent project, Sargent & Lundy developed a novel system to dehydrate CO2 by utilizing heat recovered from the gas compression system and absorption chillers for applications such as Carbon Capture and Sequestration (CCS) projects on fossil fuel-fired power plants. The dehydration system is based upon recovering waste heat from the compression cycle and transferring it to absorption chillers to generate chilled water for dehydration purposes. The chilled water is used within multiple stages of the CO2 compression train. The system is capable of dehydrating the supercritical CO2 stream to a level of 29 lbm of H2O per mmSCF for transport in a carbon steel pipeline for enhanced oil recovery and sequestration purposes. The process requires the recovery of waste heat, absorption chillers and cooling water from a conventional cooling tower. The system provides a unique option to reduce compression train power requirements and emissions.

Copyright © 2012 by ASME

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