Comparisons of a class of IGCC polygeneration/power plants using calcium/chemical looping combinations

Wei Wu, Fang Wen, Jhao Rong Chen, Po Chih Kuo, Bin Shi

Research output: Contribution to journalArticle

Abstract

To retrofit the traditional integrated gasification combined cycle (IGCC) plants, four plant designs using different combinations of the chemical-looping air separation (CLAS), calcium-looping (CaL), and syngas chemical-looping (SCL) are presented, where the modeling of calcium/chemical looping cycles in fast fluidized-bed and moving-bed reactors have been validated by experimental data. The IGCC polygeneration plants (Designs 1 and 2) and the IGCC power plants (Designs 3 and 4) are developed in an integration simulation platform, and their performances in terms of gross power efficiency (GPE), net thermal efficiency (NTE), carbon emission rate (CER) and water recycling rate (WRR) are evaluated. The comparison results show that (i) Design 1 possesses high thermal efficiency and low water consumption since the SCL cycle can improve NTE and increase WRR by producing the high-purity hydrogen and recovering water from exhaust gases, and (ii) Design 4 possesses high power efficiency and low CO 2 emissions since a combination of Rankine and Brayton cycles is integrated to increase GPE and CO 2 -rich gas is partially recycled in the CLAS cycle to decrease CER.

Original languageEnglish
Pages (from-to)193-204
Number of pages12
JournalJournal of the Taiwan Institute of Chemical Engineers
Volume96
DOIs
Publication statusPublished - 2019 Mar 1

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Combined cycle power plants
Gasification
Calcium
Water recycling
Carbon Monoxide
Carbon
Brayton cycle
Rankine cycle
Water
Exhaust gases
Air
Fluidized beds
Hydrogen
Gases
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

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abstract = "To retrofit the traditional integrated gasification combined cycle (IGCC) plants, four plant designs using different combinations of the chemical-looping air separation (CLAS), calcium-looping (CaL), and syngas chemical-looping (SCL) are presented, where the modeling of calcium/chemical looping cycles in fast fluidized-bed and moving-bed reactors have been validated by experimental data. The IGCC polygeneration plants (Designs 1 and 2) and the IGCC power plants (Designs 3 and 4) are developed in an integration simulation platform, and their performances in terms of gross power efficiency (GPE), net thermal efficiency (NTE), carbon emission rate (CER) and water recycling rate (WRR) are evaluated. The comparison results show that (i) Design 1 possesses high thermal efficiency and low water consumption since the SCL cycle can improve NTE and increase WRR by producing the high-purity hydrogen and recovering water from exhaust gases, and (ii) Design 4 possesses high power efficiency and low CO 2 emissions since a combination of Rankine and Brayton cycles is integrated to increase GPE and CO 2 -rich gas is partially recycled in the CLAS cycle to decrease CER.",
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Comparisons of a class of IGCC polygeneration/power plants using calcium/chemical looping combinations. / Wu, Wei; Wen, Fang; Chen, Jhao Rong; Kuo, Po Chih; Shi, Bin.

In: Journal of the Taiwan Institute of Chemical Engineers, Vol. 96, 01.03.2019, p. 193-204.

Research output: Contribution to journalArticle

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