Simulation of a Lignite‐Based Polygeneration System Coproducing Electricity and Tar with Carbon Capture

Lignite-based polygeneration systems for coproducing tar and electricity with and without carbon capture and storage (CCS) were proposed and simulated. Predried lignite was pyrolyzed into coal gas, tar, and char. Coal gas was fired in a gas turbine after the cleanup process, while char was combusted in circulating fluidized-bed (CFB) boilers. The polygeneration plant without CCS turned out to be more efficient than the conventional CFB power plant, suggesting that the former is a promising and efficient option to utilize lignite resources. Moreover, the performance and emissions of polygeneration plants with and without CCS were compared. It was shown that the more CO2 is captured, the larger energy penalty it will cost. Therefore, a trade-off should be made between low emissions and high efficiency.

[1]  R. Peltier,et al.  Regulatory risks paralyzing power industry while demand grows , 2008 .

[2]  Eric Croiset,et al.  Simulation of CO2 capture using MEA scrubbing: a flowsheet decomposition method , 2005 .

[3]  Qinghui Wang,et al.  A multi-product cogeneration system using combined coal gasification and combustion , 1998 .

[4]  Robert H. Williams,et al.  Co-production of hydrogen, electricity and CO2 from coal with commercially ready technology. Part A: Performance and emissions , 2005 .

[5]  Jon Gibbins,et al.  Retrofitting CO2 capture ready fossil plants with post-combustion capture. Part 1: Requirements for supercritical pulverized coal plants using solvent-based flue gas scrubbing , 2009 .

[6]  Tiziano Faravelli,et al.  A predictive multi-step kinetic model of coal devolatilization , 2010 .

[7]  Gary T. Rochelle,et al.  Rate-Based Process Modeling Study of CO2 Capture with Aqueous Monoethanolamine Solution , 2009 .

[8]  Hui Hong,et al.  Analysis of a feasible polygeneration system for power and methanol production taking natural gas and biomass as materials , 2010 .

[9]  Minghua Wang,et al.  Energy savings by co-production: A methanol/electricity case study , 2010 .

[10]  Stefano Freguia,et al.  Modeling of CO2 capture by aqueous monoethanolamine , 2003 .

[11]  William L. Luyben,et al.  Integrated Gasification Combined Cycle Dynamic Model: H2S Absorption/Stripping, Water−Gas Shift Reactors, and CO2 Absorption/Stripping , 2010 .

[12]  Efstratios N. Pistikopoulos,et al.  A Multi-Objective Optimization Approach to Polygeneration Energy Systems Design , 2010 .

[13]  Dieter Boer,et al.  Integrated gasification combined cycle (IGCC) process simulation and optimization , 2010, Comput. Chem. Eng..

[14]  Andrew Forbes Alexander Hoadley,et al.  Process integration analysis of a brown coal-fired power station with CO2 capture and storage and lignite drying , 2009 .

[15]  Sujit Karmakar,et al.  Thermodynamic analysis of high‐ash coal‐fired power plant with carbon dioxide capture , 2013 .

[16]  Umberto Desideri,et al.  Performance modelling of a carbon dioxide removal system for power plants , 1999 .

[17]  Nilay Shah,et al.  An overview of CO2 capture technologies , 2010 .

[18]  Hu Lin,et al.  Techno-economic evaluation of coal-based polygeneration systems of synthetic fuel and power with CO2 recovery , 2011 .

[19]  A. Mujumdar,et al.  Low-Rank Coal Drying Technologies—Current Status and New Developments , 2009 .

[20]  D. Bhattacharyya,et al.  Steady-State Simulation and Optimization of an Integrated Gasification Combined Cycle Power Plant with CO2 Capture , 2011 .

[21]  Gary T. Rochelle,et al.  Innovative Absorber/Stripper Configurations for CO2 Capture by Aqueous Monoethanolamine , 2006 .

[22]  Jie Feng,et al.  Optimization and efficiency analysis of polygeneration system with coke-oven gas and coal gasified gas by Aspen Plus , 2012 .

[23]  Qinhui Wang,et al.  Thermodynamic and economic analysis of polygeneration system integrating atmospheric pressure coal pyrolysis technology with circulating fluidized bed power plant , 2014 .

[24]  Eric Croiset,et al.  Techno-economic study of CO2 capture from an existing coal-fired power plant: MEA scrubbing vs. O2/CO2 recycle combustion , 2003 .

[25]  M. Melaaen,et al.  Aspen Plus Simulation of CO2 Removal from Coal and Gas Fired Power Plants , 2012 .

[26]  Efstratios N. Pistikopoulos,et al.  Advances in Energy Systems Engineering , 2011 .

[27]  David Merrick,et al.  Mathematical models of the thermal decomposition of coal: 2. Specific heats and heats of reaction , 1983 .

[28]  Costas Tsouris,et al.  Separation of CO2 from Flue Gas: A Review , 2005 .

[29]  Tiziano Faravelli,et al.  A predictive kinetic model of sulfur release from coal , 2012 .