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Bio-Energy with CCS (BECCS) performance evaluation: Efficiency enhancement and emissions reduction

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Title: Bio-Energy with CCS (BECCS) performance evaluation: Efficiency enhancement and emissions reduction
Authors: Bui, M
Fajardy, M
Mac Dowell, N
Item Type: Journal Article
Abstract: In this study we evaluate the feasibility of the recovery of waste heat from the power plant boiler system of a pulverised fuel power plant with amine-based CO2 capture. This recovered heat can, as a function of fuel type and solvent selection, provide up to 100% of the heat required for solvent regeneration, thus obviating the need for withdrawing steam from the power plant steam cycle and significantly reducing the efficiency penalty imposed upon the power plant by the CO2 capture process. In studying the thermochemistry of the combustion process, it was observed that co-firing with low moisture biomass achieved higher adiabatic flame temperatures (AFT) than coal alone. The formation and emission of SOX reduced as biomass co-firing proportion increased, whereas NOX emissions were observed to be a function of AFT. The power generation efficiency of a 500 MW 50% co-firing BECCS system increased from 31%HHV with a conventional MEA solvent, to 34%HHV with a high performance capture solvent. The heat recovery approach described in this paper enabled a further efficiency increase up to 38%HHV with the high performant solvent. Such a system was found to remove 0.83 MtCO2 from the atmosphere per year at 90% capacity factor.
Issue Date: 21-May-2017
Date of Acceptance: 10-Mar-2017
URI: http://hdl.handle.net/10044/1/49332
DOI: https://dx.doi.org/10.1016/j.apenergy.2017.03.063
ISSN: 0306-2619
Publisher: ELSEVIER
Start Page: 289
End Page: 302
Journal / Book Title: APPLIED ENERGY
Volume: 195
Copyright Statement: © 2017 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/M015351/1
Keywords: Science & Technology
Technology
Energy & Fuels
Engineering, Chemical
Engineering
Bio-energy
Carbon Capture and Storage (CCS)
BECCS
Greenhouse gas removal (GGR)
Negative emissions technologies (NETs)
POSTCOMBUSTION CO2 CAPTURE
PULVERIZED COAL COMBUSTION
LIFE-CYCLE ASSESSMENT
WASTE HEAT-RECOVERY
FIRED POWER-STATION
SCALE TEST FACILITY
LOW-RANK COAL
CARBON CAPTURE
NEGATIVE EMISSIONS
SULFUR RETENTION
09 Engineering
14 Economics
Energy
Publication Status: Published
Appears in Collections:Centre for Environmental Policy
Faculty of Natural Sciences



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