Hydrothermal And Vapothermal Carbonization Of Agricultural Wastes To Produce Solid Fuels

An investigation was carried out to study the effects of hydrothermal a carbonization on various agricultural wastes. A dual chamber reactor was designed to carry out the hydrothermal and vapothermal carbonization processes.From the experiments, the highest energy densification achieved was 1.280 in...

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Main Author:	Yeoh, Keat Hor
Format:	Thesis
Language:	English
Published:	2016
Subjects:	T Technology
Online Access:	http://eprints.usm.my/45768/1/Hydrothermal%20And%20Vapothermal%20Carbonization%20Of%20Agricultural%20Wastes%20To%20Produce%20Solid%20Fuels.pdf
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spelling	my-usm-ep.457682021-11-17T03:42:18Z Hydrothermal And Vapothermal Carbonization Of Agricultural Wastes To Produce Solid Fuels 2016-10 Yeoh, Keat Hor T Technology TA349-359 Mechanics of engineering. Applied mechanics An investigation was carried out to study the effects of hydrothermal a carbonization on various agricultural wastes. A dual chamber reactor was designed to carry out the hydrothermal and vapothermal carbonization processes.From the experiments, the highest energy densification achieved was 1.280 invapothermal carbonization and 1.145 in hydrothermal carbonization for oil palm empty fruit bunches. Comparison of the hydrochar produced from both processes shows that vapothermal carbonized materials have higher heating values and higher fixed carbon contents as compared to those from hydrothermal carbonization process. Volatile matter of vapothermal carbonized materials have drops about 20% while their fixed carbon content are increased by 70-95% compare to the raw feedstock. With the supports of the SEM pictures and DTG curves of the products, it was concluded that the reaction mechanism during the hydrothermal and vapothermal carbonization are different. Devolatization was found to be the main reason that increases the overall energy content in vapothermal carbonization, while formation of 2,5-HMF which gives a sharp peak at around 340°C in the DTG curves was suggested as the reason that led to the increase in energy content in hydrothermal carbonized materials. Other than that, this project also showed that lower water to biomass ratio led to higher energy densification. A comparison of torrefaction, hydrothermal and vapothermal carbonization processes also showed that hydrothermal and vapothermal carbonization are capable to suppress the deposition of tar on the reactor wall during the carbonization process 2016-10 Thesis http://eprints.usm.my/45768/ http://eprints.usm.my/45768/1/Hydrothermal%20And%20Vapothermal%20Carbonization%20Of%20Agricultural%20Wastes%20To%20Produce%20Solid%20Fuels.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Mekanik
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	T Technology T Technology
spellingShingle	T Technology T Technology Yeoh, Keat Hor Hydrothermal And Vapothermal Carbonization Of Agricultural Wastes To Produce Solid Fuels
description	An investigation was carried out to study the effects of hydrothermal a carbonization on various agricultural wastes. A dual chamber reactor was designed to carry out the hydrothermal and vapothermal carbonization processes.From the experiments, the highest energy densification achieved was 1.280 invapothermal carbonization and 1.145 in hydrothermal carbonization for oil palm empty fruit bunches. Comparison of the hydrochar produced from both processes shows that vapothermal carbonized materials have higher heating values and higher fixed carbon contents as compared to those from hydrothermal carbonization process. Volatile matter of vapothermal carbonized materials have drops about 20% while their fixed carbon content are increased by 70-95% compare to the raw feedstock. With the supports of the SEM pictures and DTG curves of the products, it was concluded that the reaction mechanism during the hydrothermal and vapothermal carbonization are different. Devolatization was found to be the main reason that increases the overall energy content in vapothermal carbonization, while formation of 2,5-HMF which gives a sharp peak at around 340°C in the DTG curves was suggested as the reason that led to the increase in energy content in hydrothermal carbonized materials. Other than that, this project also showed that lower water to biomass ratio led to higher energy densification. A comparison of torrefaction, hydrothermal and vapothermal carbonization processes also showed that hydrothermal and vapothermal carbonization are capable to suppress the deposition of tar on the reactor wall during the carbonization process
format	Thesis
qualification_level	Master's degree
author	Yeoh, Keat Hor
author_facet	Yeoh, Keat Hor
author_sort	Yeoh, Keat Hor
title	Hydrothermal And Vapothermal Carbonization Of Agricultural Wastes To Produce Solid Fuels
title_short	Hydrothermal And Vapothermal Carbonization Of Agricultural Wastes To Produce Solid Fuels
title_full	Hydrothermal And Vapothermal Carbonization Of Agricultural Wastes To Produce Solid Fuels
title_fullStr	Hydrothermal And Vapothermal Carbonization Of Agricultural Wastes To Produce Solid Fuels
title_full_unstemmed	Hydrothermal And Vapothermal Carbonization Of Agricultural Wastes To Produce Solid Fuels
title_sort	hydrothermal and vapothermal carbonization of agricultural wastes to produce solid fuels
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Mekanik
publishDate	2016
url	http://eprints.usm.my/45768/1/Hydrothermal%20And%20Vapothermal%20Carbonization%20Of%20Agricultural%20Wastes%20To%20Produce%20Solid%20Fuels.pdf
_version_	1747821561717456896

Hydrothermal And Vapothermal Carbonization Of Agricultural Wastes To Produce Solid Fuels

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