Co2 Capture by Absorption With Potassium Carbonate

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Description

The objective of this work is to improve the process for CO{sub 2} capture by alkanolamine absorption/stripping by developing an alternative solvent, aqueous K{sub 2}CO{sub 3} promoted by piperazine. The stripper model with Aspen Custom Modeler and careful optimization of solvent rate suggests that 7 m MEA and 5 m K+/2.5 m PZ will be practically equivalent in energy requirement and optimum solution capacity. The multipressure stripper reduces energy consumption by 15% with a maximum pressure of 5 atm. The use of vanadium as a corrosion inhibitor will carry little risk of long-term environmental or health effects liability, but the ... continued below

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43 pages

Creation Information

Rochelle, Gary T.; Chen, Eric; Lu, Jennifer; Oyenekan, Babatunde & Dugas, Ross November 8, 2004.

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Description

The objective of this work is to improve the process for CO{sub 2} capture by alkanolamine absorption/stripping by developing an alternative solvent, aqueous K{sub 2}CO{sub 3} promoted by piperazine. The stripper model with Aspen Custom Modeler and careful optimization of solvent rate suggests that 7 m MEA and 5 m K+/2.5 m PZ will be practically equivalent in energy requirement and optimum solution capacity. The multipressure stripper reduces energy consumption by 15% with a maximum pressure of 5 atm. The use of vanadium as a corrosion inhibitor will carry little risk of long-term environmental or health effects liability, but the disposal of solvent with vanadium will be subject to regulation, probably as a hazardous waste. Analysis of the pilot plant data from Campaign 1 has given values of the mass transfer coefficient consistent with the rate data from the wetted wall column. With a rich end pinch, 30% MEA should provide a capacity of 1.3-1.4 mole CO{sub 2}/kg solvent.

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43 pages

Notes

OSTI as DE00835452

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  • Other Information: PBD: 8 Nov 2004

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  • Report No.: NONE
  • Grant Number: FC26-02NT41440
  • DOI: 10.2172/835452 | External Link
  • Office of Scientific & Technical Information Report Number: 835452
  • Archival Resource Key: ark:/67531/metadc782967

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • November 8, 2004

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  • Dec. 3, 2015, 9:30 a.m.

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  • Oct. 4, 2017, 5:16 p.m.

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Rochelle, Gary T.; Chen, Eric; Lu, Jennifer; Oyenekan, Babatunde & Dugas, Ross. Co2 Capture by Absorption With Potassium Carbonate, report, November 8, 2004; Austin, Texas. (digital.library.unt.edu/ark:/67531/metadc782967/: accessed December 11, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.