Premium
Pressurized drop tube furnace tests of global coal gasification characteristics
Author(s) -
Shin Yongseung,
Choi Sangmin,
Ahn DalHong
Publication year - 2000
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/1099-114x(200007)24:9<749::aid-er614>3.0.co;2-i
Subject(s) - coal gasification , coal , nuclear engineering , materials science , waste management , tube (container) , environmental science , tube furnace , pulverized coal fired boiler , drop (telecommunication) , metallurgy , engineering , mechanical engineering , chemical engineering
Pressurized drop tube furnace (PDTF) tests were performed with an Indonesian sub‐bituminous coal while temperature, oxygen/coal ratio, steam/coal ratio and pressure were systematically varied. The tests were designed to investigate the effects of these experimental parameters on the pulverized coal gasification characteristics at elevated pressure. The results showed that the gasification at elevated pressure is more productive than that at atmospheric pressure, considering the carbon conversion and cold gas efficiency. The oxygen/coal ratio at the maximum cold gas efficiency ranged between 0.5 and 0.7 g/g. Only when the temperature was sufficiently high, did the increase of steam/coal ratio result in the improvement of cold gas efficiency. As the pressure increased, the contribution of carbon conversion by heterogeneous reactions increased while the conversion by pyrolysis decreased. Copyright © 2000 John Wiley & Sons, Ltd.