文献类型：期刊文献

英文题名：Compartment modeling of coal gasification in an entrained flow gasifier: A study on the influence of operating conditions

作者：Kong, Xiangdong[1];Zhong, Weimin[1];Du, Wenli[1];Qian, Feng[1]

机构：[1]E China Univ Sci & Technol, Minist Educ, Key Lab Adv Control & Optimizat Chem Proc, Shanghai 200237, Peoples R China

年份：2014

卷号：82

起止页码：202

外文期刊名：ENERGY CONVERSION AND MANAGEMENT

收录：;EI(收录号：20141517553166);WOS:【SCI-EXPANDED(收录号:WOS:000336017800020)】；

基金：This work is supported by Major State Basic Research Development Program of China (2012CB720500), National Natural Science Foundation of China (Key Program: U1162202), National Science Fund for Outstanding Young Scholars (61222303), National Natural Science Foundation of China (61174118, 21276078 and 21376077), Shanghai Rising-Star Program (13QH1401200), Program for New Century Excellent Talents in University (NCET-10-0885) and Shanghai R&D Platform Construction Program (13DZ2295300).

语种：英文

外文关键词：Entrained flow gasifier; Compartment model; Recirculation ratio; Efficient syngas yield; Oxygen consumption

摘要：Coal gasifiers are core components of coal-based polygeneration systems for power and chemical production. To study the effects of operational parameters on the performance of entrained flow coal gasifiers, this paper presents an equivalent compartment model (CM) using the Aspen Plus process simulator. The CM blocking is established based on gasifier flow field analysis, using a number of compartments. A simple configuration of these compartments involving material recirculation should be able to simulate the main flow and provide the temperature and gas component distributions. The model predictions exhibit good agreement with industrial data in the model validation. The influences of the oxygen-to-carbon ratio (ROC) and the coal slurry concentration on the gasification performance are discussed. Within the calculation range, the increase in the coal slurry concentration enhances the yield of the effective compositions in product gas. For a given slurry concentration of 62%, the efficient gas yield is a maximum for ROC of 1.43 kg/kg, whereas the oxygen consumption is a minimum for ROC of 1.37 kg/kg. According to the intended final use, however, choosing a reasonable ROC to obtain a higher efficient syngas yield and lower oxygen consumption can be flexible. (C) 2014 Published by Elsevier Ltd.