Coal-based Pressurized Chemical Looping Combustion Combined Cycle (PCLC-CC) is the second generation of coal-fueled CLC plant, which possesses much higher plant efficiency and lower-CO2 capture cost compared to the first generation - Coal-based CLC combined solely with steam cycle. PCLC-CC has a similar plant configuration to the Pressurized Fluidized Bed Combined Cycle (PFBC), and is composed of a PCLC Island, gas turbine, Heat Recovery Steam Generator (HRSG) and steam cycle. In the fuel reactor of PCLC Island, the metal-based oxygen carrier (OC) supplies oxygen for coal combustion and in-situ CO2 capture. The air reactor of PCLC Island, where the OC is re-oxidized by air, serves as a combustion reactor to produce oxygen-depleted air of high temperature and high pressure to drive the gas turbine and the following steam cycle for large-scale power generation. This research provides an initial understanding of the complex reactions in the fuel reactor of the solid-fueled PCLC Island in the pressures range of 1–6 bars. Experiments conducted in the TGA apparatus and the fixed- and fluidized-bed reactors demonstrated the effects of operational pressure, coal char reactivity and different iron-based OCs behavior on the performance of PCLC.
|Number of pages||11|
|State||Published - 2017|
Bibliographical noteFunding Information:
The authors thank the U.S. Department of Energy (US-DOE) for its financial support (DE-FE0025098) as well as the Kentucky Energy and Environment Cabinet Department for Energy Development and Independence, and the Carbon Management Research Group consortium at the University of Kentucky Center for Applied Energy (UKy-CAER), including Duke Energy, Electric Power Research Institute, Louisville Gas & Electric (LG&E) and Kentucky Utilities (KU).
- Combustion efficiency
- Gasification rate
- Iron-based oxygen carrier
- Pressurized chemical looping combustion
- Solid fuel
ASJC Scopus subject areas
- Building and Construction
- Energy (all)
- Mechanical Engineering
- Management, Monitoring, Policy and Law