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Received August 9, 2015
Accepted March 6, 2016
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Dynamic modeling and simulation of reaction, slag ehavior, and heat transfer to water-cooling wall of shell entrained-flow gasifier
Senior Researcher, Energy Technology Team, GS Engineering & Construction Co., Ltd., Seoul 03159, Korea 1Senior Researcher, PosCC (Clean Coal), Research Institute of Industrial Science & Technology, Pohang 37673, Korea 2School of Mechanical Engineering, Pusan Clean Coal Center, Pusan National University, Busan 46241, Korea
chjeon@pusan.ac.kr
Korean Journal of Chemical Engineering, June 2016, 33(6), 1767-1776(10), 10.1007/s11814-016-0074-x
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Abstract
A mathematical model is developed to simulate a pilot Shell entrained-flow coal gasifier. Submodels of specific structures of the gasifier are established to simulate the complicated gasification process. The model includes the total energy conservation equation and mass conservation equations for the gas components, solid flow, and gas flow. It simulates the influence of the gasifier structure and dimensions and can calculate the effects of changing almost every important operation parameter, e.g., the syngas composition, gasification temperature, carbon conversion ratio, walllayer temperature, and slag mass flow rate. The model can predict the syngas composition under a limited residence time condition. Furthermore, it considers the heat transfer coefficient of each layer of the water wall to calculate its heat loss and temperature. Thus, the model also reflects the influence of performance parameters of the gasifier’s water wall. The slag mass flow rate on the wall is calculated using a slag submodel.
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References
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