Title: Process simulation and energy consumption for CO₂ capture with different flowsheets

Authors: Boyang Xue; Yanmei Yu; Jian Chen

Addresses: State Key Laboratory of Chemical Engineering, Tsinghua University, Beijing 100084, China ' State Key Laboratory of Chemical Engineering, Tsinghua University, Beijing 100084, China ' State Key Laboratory of Chemical Engineering, Tsinghua University, Beijing 100084, China

Abstract: In this work, a systematic simulation study of post-combustion CO₂ capture process is presented. Including six individual process modifications and six combinations of process modifications, 13 different process configurations are simulated using aqueous monoethanolamine (MEA) and diethanolamine (DEA) solutions. Process modifications presented a good performance with respect to the reduction of energy consumption. It is carried out with 3.45% to 13.45% of reduction for MEA and 2.36% to 14.10% for DEA. Furthermore, a detailed analysis is presented to study the effect of three significant parameters in capture process, i.e., CO₂ loading of lean amine solvent, pinch of heat exchanger and stripper pressure. This work presents the influence of the combination of solvent and process, as well as the combination of different processes on energy consumption, which are essential in post-combustion process design to make optimisation strategy.

Keywords: CO₂ capture; absorption; process simulation; flowsheets; energy consumption.

DOI: 10.1504/IJGW.2017.084514

International Journal of Global Warming, 2017 Vol.12 No.2, pp.207 - 227

Received: 25 Apr 2015
Accepted: 05 Nov 2015
Published online: 12 Jun 2017 *

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