Review Paper. Catalysts Analysis for Msw Pyrolysis and Gasification
Review paper. Catalysts analysis for MSW pyrolysis and gasification
Tursunov Obida, Khairuddin Md Isaa, Dr. Ong Soon Ana aSchool of Environmental Engineering, University Malaysia Perlis UniMAP, Arau 02600, Perlis, Malaysia
Abstract
MSW pyrolysis and gasification are the possible alternative to the direct use of fossil fuel energy. MSW, a CO2 neutral source of renewable fuel, can contribute to the demand for heat, electricity and synthesis gas (syngas). Nevertheless, there are inefficiencies in the technology, which at present render MSW pyrolysis and gasification economically unviable. The presence of condensable organic compounds and methane in the product gas renders the gas unsuitable for specific applications. Elimination of the condensable organic compounds and methane by a suitably cheap technology will enrich the economic viability of MSW pyrolysis and gasification. This paper contains an extensive review of the three main groups of catalysts, which have been estimated for the elimination of these hydrocarbons. These three groups of catalysts are dolomite, alkali metals and nickel.
Keywords. MSW pyrolysis and gasification; Tar; Synthetic gas (syngas); Catalysts; Reforming; Dolomite; Alkali metals and nickel
1. Introduction
Notible progress has been achieved in recent years in the design of gasifiers. Nevertheless, gas cleaning is still the bottleneck in advanced gas utilization that limits the deployment of the use of MSW for electricity generation [1]. The continual build-up of condensable organic compounds (often called to as tars) present in the produce gas can cause blockages and corrosion and also reduce overall efficiency. In addition, the presence of impurities (such as methane) can affect the end usage of the synthetic gas (syngas) and the techniques involved in the removal of the impurities in such processes are costly. Nitrogen and sulphur are present in many of the by-products and the corresponding oxides are produced during combustion
Tursunov Obida, Khairuddin Md Isaa, Dr. Ong Soon Ana aSchool of Environmental Engineering, University Malaysia Perlis UniMAP, Arau 02600, Perlis, Malaysia
Abstract
MSW pyrolysis and gasification are the possible alternative to the direct use of fossil fuel energy. MSW, a CO2 neutral source of renewable fuel, can contribute to the demand for heat, electricity and synthesis gas (syngas). Nevertheless, there are inefficiencies in the technology, which at present render MSW pyrolysis and gasification economically unviable. The presence of condensable organic compounds and methane in the product gas renders the gas unsuitable for specific applications. Elimination of the condensable organic compounds and methane by a suitably cheap technology will enrich the economic viability of MSW pyrolysis and gasification. This paper contains an extensive review of the three main groups of catalysts, which have been estimated for the elimination of these hydrocarbons. These three groups of catalysts are dolomite, alkali metals and nickel.
Keywords. MSW pyrolysis and gasification; Tar; Synthetic gas (syngas); Catalysts; Reforming; Dolomite; Alkali metals and nickel
1. Introduction
Notible progress has been achieved in recent years in the design of gasifiers. Nevertheless, gas cleaning is still the bottleneck in advanced gas utilization that limits the deployment of the use of MSW for electricity generation [1]. The continual build-up of condensable organic compounds (often called to as tars) present in the produce gas can cause blockages and corrosion and also reduce overall efficiency. In addition, the presence of impurities (such as methane) can affect the end usage of the synthetic gas (syngas) and the techniques involved in the removal of the impurities in such processes are costly. Nitrogen and sulphur are present in many of the by-products and the corresponding oxides are produced during combustion