The reactor geometry effect on gasification of isooctane in supercritical water

Title
The reactor geometry effect on gasification of isooctane in supercritical water
Authors
수산티김재훈김재덕이윤우
Keywords
Hydrogen; Supercritical; Isooctane; gasification
Issue Date
2009-04
Publisher
한국화학공학회 2009 봄 학술대회
Citation
, 216-216
Abstract
Gasification of isooctane, a model compound of gasoline, into hydrogen was investigated in a continuous tubular reactor under supercritical water conditions without using catalysts. The influences of reactor temperature, residence time, oxidant concentration were examined in different reactor geometrical configuration at a fixed pressure of 25MPa. In downdraft type, the reactor was set vertically where thefeeds flowed from the top and effluent flowed from the bottom while in down-up type, the reactor was tilte at inclination of 75⁰normal to surface and down up introducing the feeds to the reactor system. The najor components of the produced gas were hydrogen(H2), methane (CH4), carbon dioxide (CO2) and the minor components were carbon monoxide (CO) and ethane (C2H6). The down-up configuration gave better flow rate stability of gas-liquid and hydrogen yield at almost 4 times higher compare to downdraft type. The experimental results showed that H2 yield was increased by applying higher reaction temperature, longer residence time and small amount of oxidant concentration. On the basis of this study, gasoline or heavy oil can be gasified with satisfying hydrogen yields using a compact SCW gasification system.
URI
http://pubs.kist.re.kr/handle/201004/35088
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KIST Publication > Conference Paper
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