Structured exergy analysis of an integrated gasification combined cycle (IGCC) plant with carbon capture

Comprehensive Exergy Analysis of Three IGCC Power Plant Configurations with CO2 Capture

“…A high-level exergy analysis of an IGCC-CCS power plant was conducted by Kunze et al [18], in which the overall plant was separated into 3 different subsystems (Gasifier Island, Syngas Treatment, and Combined Cycle.) Here, we break the IGCC-CCS power plant into a total of 10 (or 11) subsystems within the power plant.…”

“…Instead, our main focus here is conducting detailed exergy analyses of three cases in order to help build an understanding of where are the major sources of exergy destruction in the three cases. Our goal here is to present detailed, thorough, and transparent exergy analyses, which builds upon the previous work by authors who have published exergy analyses of IGCC and IGCC-CCS power plants [8,13,[18][19][20][21][22][23][24][25]. As such, this paper presents comprehensive exergy analyses on three IGCC-CCS power plants: (a) a baseline model using Selexol™ for H 2 S & CO 2 capture; (b) a modified version that incorporates a H 2 -selective PBI-membrane operating at 250 • C; and (c) a modified version that incorporates a CO 2 selective membrane.…”

Comparison of carbon capture IGCC with chemical-looping combustion and with calcium-looping process driven by coal for power generation

“…This work suggested that a CLC-based IGCC system has a low energy penalty and has an overall efficiency up to 64.1%, which is higher than an entrained flow gasifier in an IGCC, with an overall efficiency of 46.6% (Cormos, 2012a). Kunze et al conducted an exergy analysis of an IGCC plant and showed that 60% of the exergy was lost in the overall process, with 17.1% in gas treating and 11.3% in the gasifier (Kunze et al, 2011). Chen et al developed a CaO sorption-enhanced looping process that was incorporated into a coal-driven IGCC for power production with CO 2 separation.…”

A survey on current advanced IGCC power plant technologies, sensors and control systems

“…Several techno-economic, exergy and thermodynamic analyses have been performed to evaluate the commercial availability and suitability of this process for its consideration as an attractive alternative to nuclear or conventional power plants with less environmental impacts [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]. IGCC's efficiency has been mostly studied using steady-state process models, e.g., the effects of the coal type and CO 2 capture rate on the IGCC's efficiency have been studied in [36][37][38][39][40][41][42][43][44].…”