TY - JOUR
T1 - Inception criteria for entrainment of molten slag droplet in an entrained flow coal gasifier
AU - Inumaru, Jun
AU - Watanabe, Hiroaki
AU - Ohtaka, Maromu
AU - Ashizawa, Masami
AU - Ichikawa, Kazuyoshi
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2009/8
Y1 - 2009/8
N2 - Experimental studies using 2 t/d and 200 t/d coal gasifier were carried out to investigate the inception criteria for entrainment of molten slag droplet in an entrained flow coal gasifier. It was clarified that average gas dynamic pressure Pd and liquid film Reynolds number Ref influenced strongly the phenomenon of entrainment of molten slag. The formula of the critical gas dynamic pressure Pdc and the critical Weber number Wec=1.73, which could be applied to the large-scale gasifier, were obtained as inception criteria for the phenomenon. It was clearly shown that the flow pattern in the large-scale gasifier could be different from the smaller gasifier by means of numerical simulation analysis and that the critical velocity Ugc decreases relatively along with the scaling - up of the gasifier.
AB - Experimental studies using 2 t/d and 200 t/d coal gasifier were carried out to investigate the inception criteria for entrainment of molten slag droplet in an entrained flow coal gasifier. It was clarified that average gas dynamic pressure Pd and liquid film Reynolds number Ref influenced strongly the phenomenon of entrainment of molten slag. The formula of the critical gas dynamic pressure Pdc and the critical Weber number Wec=1.73, which could be applied to the large-scale gasifier, were obtained as inception criteria for the phenomenon. It was clearly shown that the flow pattern in the large-scale gasifier could be different from the smaller gasifier by means of numerical simulation analysis and that the critical velocity Ugc decreases relatively along with the scaling - up of the gasifier.
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U2 - 10.1299/kikaib.75.756_1576
DO - 10.1299/kikaib.75.756_1576
M3 - Article
AN - SCOPUS:73349125068
SN - 0387-5016
VL - 75
SP - 1576
EP - 1583
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
IS - 756
ER -