Sorbents for sorption-enhaced water gas shift process for pre-combustion CO2 capture

Yongqi Lu, Hong Lu, Massoud R. Rostam-Abadi, Maryam Sayyah, Kenneth Suslick, William A. Steen, Carl Richardson, Joseph Hirschi, Meghan Napoli

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The University of Illinois at Urbana-Champaign and URS Group, Inc. are developing, characterizing, and testing CO2 sorbents that can be used in a sorption-enhanced water-gas-shift (SEWGS) process for coal gasification plants. The SEWSG process combines the WGS and CO2 capture in one single process unit and would improve the plant's overall efficiency. In this study, thermodn. modeling studies were performed to identify the compns. of sorbents and operating conditions suitable for the SEWGS application. Various sorbents were prepd. using mech. alloying (MA), ultra-sonic spray pyrolysis (USP), and flame spray pyrolysis (FSP) approaches. Carbonation and recarbonation performances of the sorbents were evaluated over fifteen cycles using an atm. thermogravimetric analyzer (TGA). The sorbents exhibited higher capacities and better stabilities than several selected com. CaCO3 materials at temp. swings between 650°C and 900°C. Doping of the sorbents with magnesium, aluminum and zirconium further improved their stability. on SciFinder(R)]
Original languageEnglish (US)
Title of host publicationInternational Technical Conference on Clean Coal and Fuel Systems
PublisherCoal Technology Association
Pages549--560
Volume37
StatePublished - 2012

Keywords

  • ISGS

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