文献类型：期刊文献

英文题名：Experimental and numerical study on slag deposition and growth at the slag tap hole region of Shell gasifier

作者：Wang, Jian[1];Liu, Haifeng[1];Liang, Qinfeng[1];Xu, Jianliang[1]

机构：[1]E China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, Shanghai 200237, Peoples R China

年份：2013

卷号：106

起止页码：704

外文期刊名：FUEL PROCESSING TECHNOLOGY

收录：;EI(收录号：20125015778824);WOS:【SCI-EXPANDED(收录号:WOS:000314191800091)】；

基金：This work was partially supported by the National Natural Science Foundation of China (20906020, and 21106046), the National Key State Basic Research Development Program of China (2010CB227005), the High tech Research and Development Program of China (2008AA05031), and the Program for New Century Excellent Talents in University (NCET-08-0775).

语种：英文

外文关键词：Coal; Gasifier; Heat transfer; Slag

摘要：Cold model experimental and dynamic modeling studies on the slag flow and heat transfer at the slag tap hole region of Shell gasifier have been carried out. The cold model experiment was set up to observe the simulated slag deposition. The dynamic model was proposed to clarify the slag accumulation on the wall of slag screen. The results show that the simulated slag can be broken up to slender liquid filaments by the high-speed swirling gas flow, and a part of the filaments can deposit on the slag screen wall. When the surface temperature is below the critical temperature, the slag is totally solidified to solid slag layer. At equilibrium, a liquid slag layer covers the solid slag layer and its surface temperature is higher than the critical temperature. The solid slag layer thickness increases along the slag flow. In addition, the solid slag thickness can be decreased by increasing the operating load and operating temperature. (c) 2012 Elsevier B.V. All rights reserved.