Preliminary results on the ash behavior of peach stones during fluidized bed gasification: evaluation of fractionation and leaching as pre-treatments

Arvelakis, S; Gehrmann, H; Beckmann, M; Koukios, EG

dc.contributor.author	Arvelakis, S	en
dc.contributor.author	Gehrmann, H	en
dc.contributor.author	Beckmann, M	en
dc.contributor.author	Koukios, EG	en
dc.date.accessioned	2014-03-01T01:22:58Z
dc.date.available	2014-03-01T01:22:58Z
dc.date.issued	2005	en
dc.identifier.issn	0961-9534	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16748
dc.subject	peach stones	en
dc.subject	ash	en
dc.subject	gasification	en
dc.subject	sintering	en
dc.subject	deposition	en
dc.subject	fractionation	en
dc.subject	leaching	en
dc.subject	Prunus persica	en
dc.subject.classification	Agricultural Engineering	en
dc.subject.classification	Biotechnology & Applied Microbiology	en
dc.subject.classification	Energy & Fuels	en
dc.subject.other	COMBUSTION	en
dc.subject.other	STRAW	en
dc.subject.other	FEEDSTOCKS	en
dc.subject.other	BIOMASS	en
dc.title	Preliminary results on the ash behavior of peach stones during fluidized bed gasification: evaluation of fractionation and leaching as pre-treatments	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.biombioe.2004.08.016	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.biombioe.2004.08.016	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	Peach stones comprise a valuable agroindustrial by-product that is available in many countries of the World and especially in the Mediterranean region. A number of important advantages such as its high energy value, the low ash content in combination with the absence of transportation costs due to the fact that is produced in agro-industries, make peach stones an ideal fuel for energy production via gasification. Gasification tests were performed in a lab-scale fluidized bed gasifier in order to study the behavior of peach stones and especially its ash during the gasification process. Apart from the tests with the initial peach stone samples, gasification tests were performed using peach stones that had been pre-treated using two different methods fractionation and leaching. Pre-treatments used in order to study their effect on the beneficiation of the materials ash and on the avoidance of ash-related problems such as deposition, agglomeration and corrosion during the gasification process. A water-cooled steel tube placed vertical to the flow of the gasification gases was used in order to collect samples of ash deposits that were analyzed using SEM-EDX analysis techniques in order to assess the effect of the pre-treatment techniques on the peach stones ash behavior. The produced results showed that peach stones can be used as gasification feedstock without significant ash problems. Fractionation resulted in a deterioration of the ash behavior of the material, increasing the amounts of alkali metals and chlorine included in its ash, while leaching showed a positive effect but to a moderate extent. (C) 2004 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	BIOMASS & BIOENERGY	en
dc.identifier.doi	10.1016/j.biombioe.2004.08.016	en
dc.identifier.isi	ISI:000226802200006	en
dc.identifier.volume	28	en
dc.identifier.issue	3	en
dc.identifier.spage	331	en
dc.identifier.epage	338	en