Experimental studies of 1 ton/day coal slurry feed type oxygen blown, entrained flow gasifier

Citation
Yc. Choi et al., Experimental studies of 1 ton/day coal slurry feed type oxygen blown, entrained flow gasifier, KOR J CHEM, 18(4), 2001, pp. 493-498
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemical Engineering
Journal title
KOREAN JOURNAL OF CHEMICAL ENGINEERING
ISSN journal
0256-1115 → ACNP
Volume
18
Issue
4
Year of publication
2001
Pages
493 - 498
Database
ISI
SICI code
0256-1115(200107)18:4<493:ESO1TC>2.0.ZU;2-I
Abstract
Experimental Studies of a 1 Ton/Day coal slurry feed type oxygen blown, ent rained flow gasifier have been performed with the slurry concentration and gasifier temperature at 65% and above 1,300 degreesC, respectively. The cha racteristics of ash fusion temperature with addition of CaO as a flux were investigated to maintain the proper slag tapping condition in the range of reaction temperature. As the flux addition increased, ash fusion temperatur e showed a eutectic effect with the eutectic at around 20-30% CaO. In order to analyze the gasification characteristics, the effects of O-2/coal feed ratio on the product gas composition, heating value, gasifier temperature a nd cold gas efficiency were evaluated. From the results, it was shown in th e case of Kideco coal that the cold gas efficiency was 44-60% and the heati ng value was 1,700-2,200 kcal/Nm(3), while Drayton coal showed a cold gas e fficiency of 55-62% and a heating value of 1,800-2,200 kcal/Nm(3). In the c ase of Datong coal, the cold gas efficiency was 38-65%, and the heating val ue was 2,000-2,300 kcal/Nm(3). Also, the results showed that the optimal op erating condition of O-2/coal ratio for the three different coals was 0.9.