Title: Clean-up treatments for syngas obtained by gasification of coal, lignocellulosic biomass or municipal residues

Authors: Octávio Alves; Eliseu Monteiro; Paulo Brito; Maria Gonçalves

Addresses: Research Centre for Endogenous Resource Valorization (VALORIZA), Polytechnic Institute of Portalegre, 7300-555 Portalegre, Portugal ' Research Centre for Endogenous Resource Valorization (VALORIZA), Polytechnic Institute of Portalegre, 7300-555 Portalegre, Portugal ' Research Centre for Endogenous Resource Valorization (VALORIZA), Polytechnic Institute of Portalegre, 7300-555 Portalegre, Portugal ' Mechanical Engineering and Resource Sustainability Center (MEtRICs), Department of Science and Technology of Biomass, Faculty of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal

Abstract: This work provides a brief overview on methodologies for the decontamination of product gas originated from the gasification of coal, lignocellulosic biomass wastes and municipal wastes. Both conventional and emerging decontamination methods are addressed and evaluated in terms of performance and costs. Several gas decontamination strategies were identified and ranged from pre-treatments (adjustment of gasification parameters) to post-treatments (cyclones, filters, scrubbers and catalysts, for instance). A significant effort was devoted to the development of new catalyst and sorbent-based technologies, as well as of new chemical and thermal reactors, which were able to optimise process costs, material lifetime, or the removal of a wide range of gaseous contaminants. Further investigations were recommended to be conducted in gas preparation for fuel cells, plasma converters and co-gasification with new waste mixtures. Therefore, product gas decontamination assumes a relevant role in compliance with legislation, environmental equilibrium and gasification efficiency.

Keywords: synthesis gas; syngas; product gas; pollutant; decontamination; gasification.

DOI: 10.1504/PIE.2022.125579

Progress in Industrial Ecology, An International Journal, 2022 Vol.15 No.2/3/4, pp.128 - 161

Received: 15 Apr 2020
Accepted: 05 Nov 2020
Published online: 16 Sep 2022 *

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