Performance Comparison Of Steam And Air-Steam Gasification Reactor

Renewable energy sources are being used more frequently as a result of rising energy demand and environmental concerns. A growing source of sustainable energy is biomass. Thermochemical and biological processes are the most common for turning biomass to energy. When a gasifying agent is used, the so...

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Main Author: Munisuaran, Kishen
Format: Monograph
Language:English
Published: Universiti Sains Malaysia 2022
Subjects:
Online Access:http://eprints.usm.my/55689/1/Performance%20Comparison%20Of%20Steam%20And%20Air-Steam%20Gasification%20Reactor_Kishen%20Munisuaran.pdf
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author Munisuaran, Kishen
author_facet Munisuaran, Kishen
author_sort Munisuaran, Kishen
collection USM
description Renewable energy sources are being used more frequently as a result of rising energy demand and environmental concerns. A growing source of sustainable energy is biomass. Thermochemical and biological processes are the most common for turning biomass to energy. When a gasifying agent is used, the solid fuel is converted into the gaseous fuel known as PG by a thermochemical process called gasification. High hydrogen production cannot be attained when air is used as the gasifying agent. To solve this issue, a gasifying agent will be used because steam can improve hydrogen production. A self-sustained steam biomass gasifier was modified and fabricated to enable proper and fully supply of steam to the reactions. Thus, the use of steam alone and steam incorporated with air as gasification agents was explored in this research. Steam was generated using an electric steam boiler. The gasifier performance and gasification processes were characterized based on various parameters such as gasifier outlet and grate temperature, steam flow rate, steam-to-biomass ratio, heating values and producer gas composition at the top. The steam flow rates used are in the range of 11.24 to 40 ml/min for steam gasification of wood pellets and optimum steam flow rate is used for steam gasification of different biomass fuels and air-steam gasification of wood pellets. As for the gasifier characterization, the highest temperature recorded at the grate was 545 ºC and 510 ° C at the outlet for steam gasification of wood pellets. The optimum S/B ratio for producing the desired gas quality and compositions was found to be 1.9 having the highest HHV of 15.1 MJ/Nm³ in steam gasification of wood pellets. In steam gasification of different biomass fuels, wood pellets were found to yield the highest hydrogen and methane concentrations and HHV followed by PKS. As for air-steam gasification, the highest temperature recorded at the grate was 975 ºC and 905 ° C at the outlet. In this study, the optimum S/B ratio for producing the desired gas quality and compositions was found to be 1.7 at air flow rate of 50 LPM and optimum steam flow rate having the highest HHV of 5.27 MJ/Nm³.
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spelling usm.eprints-556892022-11-17T04:08:14Z http://eprints.usm.my/55689/ Performance Comparison Of Steam And Air-Steam Gasification Reactor Munisuaran, Kishen T Technology TJ Mechanical engineering and machinery Renewable energy sources are being used more frequently as a result of rising energy demand and environmental concerns. A growing source of sustainable energy is biomass. Thermochemical and biological processes are the most common for turning biomass to energy. When a gasifying agent is used, the solid fuel is converted into the gaseous fuel known as PG by a thermochemical process called gasification. High hydrogen production cannot be attained when air is used as the gasifying agent. To solve this issue, a gasifying agent will be used because steam can improve hydrogen production. A self-sustained steam biomass gasifier was modified and fabricated to enable proper and fully supply of steam to the reactions. Thus, the use of steam alone and steam incorporated with air as gasification agents was explored in this research. Steam was generated using an electric steam boiler. The gasifier performance and gasification processes were characterized based on various parameters such as gasifier outlet and grate temperature, steam flow rate, steam-to-biomass ratio, heating values and producer gas composition at the top. The steam flow rates used are in the range of 11.24 to 40 ml/min for steam gasification of wood pellets and optimum steam flow rate is used for steam gasification of different biomass fuels and air-steam gasification of wood pellets. As for the gasifier characterization, the highest temperature recorded at the grate was 545 ºC and 510 ° C at the outlet for steam gasification of wood pellets. The optimum S/B ratio for producing the desired gas quality and compositions was found to be 1.9 having the highest HHV of 15.1 MJ/Nm³ in steam gasification of wood pellets. In steam gasification of different biomass fuels, wood pellets were found to yield the highest hydrogen and methane concentrations and HHV followed by PKS. As for air-steam gasification, the highest temperature recorded at the grate was 975 ºC and 905 ° C at the outlet. In this study, the optimum S/B ratio for producing the desired gas quality and compositions was found to be 1.7 at air flow rate of 50 LPM and optimum steam flow rate having the highest HHV of 5.27 MJ/Nm³. Universiti Sains Malaysia 2022-07-24 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/55689/1/Performance%20Comparison%20Of%20Steam%20And%20Air-Steam%20Gasification%20Reactor_Kishen%20Munisuaran.pdf Munisuaran, Kishen (2022) Performance Comparison Of Steam And Air-Steam Gasification Reactor. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Mekanikal. (Submitted)
spellingShingle T Technology
TJ Mechanical engineering and machinery
Munisuaran, Kishen
Performance Comparison Of Steam And Air-Steam Gasification Reactor
title Performance Comparison Of Steam And Air-Steam Gasification Reactor
title_full Performance Comparison Of Steam And Air-Steam Gasification Reactor
title_fullStr Performance Comparison Of Steam And Air-Steam Gasification Reactor
title_full_unstemmed Performance Comparison Of Steam And Air-Steam Gasification Reactor
title_short Performance Comparison Of Steam And Air-Steam Gasification Reactor
title_sort performance comparison of steam and air steam gasification reactor
topic T Technology
TJ Mechanical engineering and machinery
url http://eprints.usm.my/55689/1/Performance%20Comparison%20Of%20Steam%20And%20Air-Steam%20Gasification%20Reactor_Kishen%20Munisuaran.pdf
work_keys_str_mv AT munisuarankishen performancecomparisonofsteamandairsteamgasificationreactor