Process integration of chemical looping combustion with oxygen uncoupling in a biomass-fired combined heat and power plant

Petteri Peltola (Corresponding Author), Jussi Saari, Tero Tynjälä, Timo Hyppänen

Research output: Contribution to journalArticleScientificpeer-review

31 Citations (Scopus)

Abstract

Bioenergy with CO 2 capture and storage (BECCS) has been introduced as a promising negative emission technology (NET) that opens up the possibility of producing power and heat with negative CO 2 emissions. By combining 1.5D reactor modelling with flowsheet simulation of a complete full-scale cogeneration plant, this study assesses the applicability and potential of an advanced CO 2 capture technology, namely chemical looping with oxygen uncoupling (CLOU), for CO 2 capture from a biomass-fired combined heat and power (CHP) plant generating electricity, district heat (DH) at 75–90 °C supply and 45 °C return temperatures, and process steam at 10 and 4.5 bar(a) pressures. Nordic wood (50% wet-basis moisture) is used as fuel. The key performance indicators of the CLOU-integrated CHP plant were quantified and compared with those of a non-CCS reference plant. Part-load operation at reduced DH loads was considered. At 100% fuel load, the CLOU plant captured 99.0% of the CO 2 from the combustion of biomass and still achieved a net efficiency of 80.1% LHV, a value very close to that of the reference plant without CO 2 capture or flue gas condensation (81.1% LHV). Depending on the fuel load, the specific negative CO 2 emissions from the CLOU plant ranged from 439 to 504 kg CO2/MWh.

Original languageEnglish
Article number118550
JournalEnergy
Volume210
DOIs
Publication statusPublished - 1 Nov 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • Bioenergy with carbon capture and storage
  • Chemical looping combustion
  • Chemical looping with oxygen uncoupling
  • Combined heat and power
  • Process integration
  • Simulation

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