Analysis of Combined Cycle Power Plants with Chemical Looping Reforming of Natural Gas and Pre-Combustion CO 2 Capture

Shareq Mohd Nazir, Olav Bolland and Shahriar Amini
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Shareq Mohd Nazir: Department of Energy and Process Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway
Olav Bolland: Department of Energy and Process Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway
Shahriar Amini: Department of Energy and Process Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway

Energies, 2018, vol. 11, issue 1, 1-13

Abstract: In this paper, a gas-fired combined cycle power plant subjected to a pre-combustion CO 2 capture method has been analysed under different design conditions and different heat integration options. The power plant configuration includes the chemical looping reforming (CLR) of natural gas (NG), water gas shift (WGS) process, CO 2 capture and compression, and a hydrogen fuelled combined cycle to produce power. The process is denoted as a CLR-CC process. One of the main parameters that affects the performance of the process is the pressure for the CLR. The process is analysed at different design pressures for the CLR, i.e., 5, 10, 15, 18, 25 and 30 bar. It is observed that the net electrical efficiency increases with an increase in the design pressure in the CLR. Secondly, the type of steam generated from the cooling of process streams also effects the net electrical efficiency of the process. Out of the five different cases including the base case presented in this study, it is observed that the net electrical efficiency of CLR-CCs can be improved to 46.5% (lower heating value of NG basis) by producing high-pressure steam through heat recovery from the pre-combustion process streams and sending it to the Heat Recovery Steam Generator in the power plant.

Keywords: pre-combustion CO 2 capture method; chemical looping reforming (CLR); combined cycle power plants; thermodynamic analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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