4.7 Article

Pd-based composite membrane and its high-pressure module for pre-combustion CO2 capture

Journal

ENERGY
Volume 51, Issue -, Pages 237-242

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2012.12.039

Keywords

Hydrogen; Pd membrane; High-pressure module; CO2 capture; Gasification

Funding

  1. Energy & Resource Technology Development Program under the Ministry of Knowledge Economy, Republic of Korea [2011201020005A]
  2. Korea Evaluation Institute of Industrial Technology (KEIT) [2011201020005A] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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This study investigates configuration of a module for withstanding high pressure and temperature for CO2 capture from a coal gasifier. In order to increase the durability of the module at high pressure and temperature, a flange-type unit-cell module was installed in a high-pressure chamber. Hydrogen permeation and N-2 leakage tests showed that H-2/N-2 selectivity remained at similar to 4000 after similar to 300 h at a pressure difference of 2000 kPa (similar to 20 bar) and 673 K. A CO2 capturing test was carried out at 673 K and a pressure difference of 2000 kPa with a 40% CO2 + 60% H-2 feed gas mixture, which is similar to the composition in a coal gasifier after shift reaction and H2O removal. It was shown that CO2 could be enriched up to 78-95% with a hydrogen recovery ratio of 82-97% when the feed flow rate was 0.05-0.17 Nm(3) h(-1) with a membrane surface area of 16.6 cm(2). (C) 2013 Elsevier Ltd. All rights reserved.

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