Integrated gasification combined cycle (IGCC) process simulation and optimization(全英文版)

本资料包含pdf文件1个，下载需要20积分

Integrated gasification combined cycle (IGCC) process simulation and optimizationThe integrated gasification combined cycle (IGCC) is an electrical power generation system which offers
efficient generation from coal with lower effect on the environment than conventional coal power plants.
However， further improvement of its efficiency and thereby lowering emissions are important tasks to
achieve a more sustainable energy production. In this paper， a process simulation tool is proposed for
simulation of IGCC. This tool is used to improve IGCCs efficiency and the environmental performance
through an analysis of the operating conditions， together with process integration studies. Pinch anal-ysis principles and process integration insights are then employed to make topological changes to the
flowsheet to improve the energy efficiency and minimize the operation costs. Process data of the Tex-aco gasifier and the associated plants (coal preparation， air separation unit， gas cleaning， sulfur recovery，
gas turbine， steam turbine and the heat recovery steam generator) are considered as a base case， and
simulated using Aspen Plus
®
. The results of parameter analysis and heat integration studies indicate
that thermal efficiency of 45% can be reached， while a significant decrease in CO2 and SOx emissions
is observed. The CO2and SOx emission levels reached are 698 kg/MWh and 0.15 kg/MWh， respectively.
Application of pinch analysis determines energy targets， and also identifies potential modifications for
further improvement to overall energy efficiency. Benefits of energy integration and steam production
possibilities can further be quantified. Overall benefits can be translated to minimum operation costs and
atmospheric emissions.
© 2009 Elsevier Ltd. All rights reserved