Process simulation of a dual-stage Selexol unit for pre-combustion carbon capture at an IGCC power plant

Hyungwoong Ahn, Zoe Kapetaki, Pietro Brandani, Stefano Brandani

Research output: Contribution to journalArticle

Abstract

It is aimed to simulate a dual-stage Selexol process for removing CO2 as well as H2S from the syngas typically found in the IGCC power plant with a dry-coal fed gasifier. Temperature-dependent Henry's law is employed in the process simulation to estimate the solubilities of gas components in Selexol. The operating conditions of dual-stage Selexol unit were found so as to meet simultaneously various specifications such as 99 + % H2 recovery, 90% or 95% CO2 recovery and 99 + % H2S recovery. The power consumptions for auxiliary units and CO2 compression estimated by the simulation are in good agreement with those reported in the literature [1]. It is shown that the conventional, integrated dual-stage Selexol unit can achieve 95% carbon capture rate as well as 90% by simply changing the operating conditions.
Original languageEnglish
Pages (from-to)1751–1755
JournalEnergy Procedia
Volume63
DOIs
Publication statusPublished - 1 Dec 2014

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