High efficient industrial process carbon capture (CC) – Field tests

Published 2012

Citation: Martini S, Kleinhappl M, Zeisler J. High efficient industrial process carbon capture (CC) – Field tests, 20th European Biomass Conference 2012, 18th-22nd of June 2012, Milano, Italy. p 1127-1131.

Abstract

In large scale industrial processes, such as iron production, or in gasification based process chains (coal/biomass to synthesis gas, fuel, or power, etc.), the separation of CO2 (Carbon Capture-CC) can lead to ecological and procedural benefits. Chemical absorption of CO2 is a well proved technology for CC with comparatively low electrical energy demand. However, the high heat demand, absorption kinetics, CO2 capacity and sorbent degradation are limiting factors for the industrial application. Further investigation and development of sorbent-solutions in relation to specific gas conditions are necessary for optimisation. For testing different sorbent-solutions a mobile test plant was designed and built up. Focus of this work was the evaluation of process key data for CC in blast furnace gas under real conditions. The tests have been carried out continuously up to 300 hours. Aqueous monoethanol-amine (MEA), diethanol-amine (DEA) and methyl-diethanol-amine (MDEA) solutions have been investigated. Detailed analyses of the process gas, analyses of used liquids (chemical properties, degradation products) and the examination of process data lead to further development in process design, control strategies for specific applications and give routes for an efficient implementation of CC to increase the benefit in the overall process chain.