Document Detail


Gasification of the char derived from distillation of granulated scrap tyres.
MedLine Citation:
PMID:  21906928     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
This work reports the effect of pressure on the steam/oxygen gasification at 1000°C of the char derived from low temperature-pressure distillation of granulated scrap tyres (GST). The study was based on the analysis of gas production, carbon conversion, cold gas efficiency and the high heating value (HHV) of the product. For comparison, similar analyses were carried out for the gasification of coals with different rank. In spite of the relatively high ash (≈12wt.%) and sulphur (≈3wt.%) contents, the char produced in GST distillation can be regarded as a reasonable solid fuel with a calorific value of 34MJkg(-1). The combustion properties of the char (E(A)≈50kJmol(-1)), its temperature of self-heating (≈264°C), ignition temperature (≈459°C) and burn-out temperature (≈676°C) were found to be similar to those of a semi-anthracite. It is observed that the yield, H(2) and CO contents and HHV of the syngas produced from char gasification increase with pressure. At 0.1MPa, 4.6Nm(3)kg(char)(-1) of syngas was produced, containing 28%v/v of H(2) and CO and with a HHV around 3.7MJNm(-3). At 1.5MPa, the syngas yield achieved 4.9Nm(3)kg(char)(-1) with 30%v/v of H(2)-CO and HHV of 4.1MJNm(-3). Carbon conversion significantly increased from 87% at 0.1MPa to 98% at 1.5MPa. It is shown that the char derived from distillation of granulated scrap tyres can be further gasified to render a gas of considerable heating value, especially when gasification proceeds at high pressure.
Authors:
Félix A López; Teresa A Centeno; Francisco José Alguacil; Belén Lobato; Aurora López-Delgado; Javier Fermoso
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-9-7
Journal Detail:
Title:  Waste management (New York, N.Y.)     Volume:  -     ISSN:  1879-2456     ISO Abbreviation:  -     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-9-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9884362     Medline TA:  Waste Manag     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
Affiliation:
Centro Nacional de Investigaciones Metalúrgicas CENIM-CSIC, Gregorio del Amo 8, 28040 Madrid, Spain.
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