水冷壁气化炉内熔渣流动特性模型

doi:10.11949/j.issn.0438-1157.20141321

化工学报 ›› 2015, Vol. 66 ›› Issue (3): 888-895.DOI: 10.11949/j.issn.0438-1157.20141321

水冷壁气化炉内熔渣流动特性模型

毕大鹏, 赵勇, 管清亮, 玄伟伟, 张建胜

清华大学热能工程系, 热科学与动力工程教育部重点实验室, 北京 100084

收稿日期:2014-08-29 修回日期:2014-10-23 出版日期:2015-03-05 发布日期:2015-03-05
通讯作者: 张建胜
基金资助:
国家高技术研究发展计划项目(2011AA05A201)。

Modeling slag behavior in membrane wall gasifier

BI Dapeng, ZHAO Yong, GUAN Qingliang, XUAN Weiwei, ZHANG Jiansheng

Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China

Received:2014-08-29 Revised:2014-10-23 Online:2015-03-05 Published:2015-03-05
Supported by:
supported by the National High Technology Research and Development Program of China (2011AA05A201).

摘要/Abstract

摘要：

通过将3D气化炉模型、熔渣一维流动传热模型和颗粒壁面捕捉模型耦合,对工业水煤浆水冷壁气化炉内的熔渣流动特性进行模型研究。重点分析了颗粒壁面行为对气化炉结渣的影响以及氧煤比变化对于渣层厚度的影响,并简要分析了水冷壁气化炉和耐火砖气化炉的差异。研究结果表明:大粒径颗粒易于被壁面捕捉,利于穹顶和直筒段渣层的形成,但不利于碳转化率的提高;小粒径颗粒具有高碳转化率,是下游细灰的主要来源,容易加剧下游受热面和灰黑水系统的负担;水冷壁气化炉内形成的固态渣层是气化炉热阻的主要组成部分,能够起到"以渣抗渣"的作用。

关键词: 熔渣, 流动, 气化, 颗粒流, 颗粒行为, 热阻

Abstract:

A slag flow model was developed for the membrane wall gasifier by coupling the 3D gasifier model, the one-dimensional slag model and the particle trap model. The influence of particle behavior and O/C (ratio of oxygen to coal) on slagging of gasifier was demonstrated. Differences between membrane wall gasifier and refractory wall gasifier were shown. The larger particle benefited the capture efficiency and formation of slag layer, while the smaller one favored high carbon conversion. The thermal resistance of solid slag layer accounted for a large proportion in the membrane wall gasifier, thus it could protect silicon carbide layer and membrane wall from thermal corrosion.

Key words: slag, flow, gasification, granular flow, particle behavior, thermal resistance

中图分类号:

TQ54

毕大鹏, 赵勇, 管清亮, 玄伟伟, 张建胜. 水冷壁气化炉内熔渣流动特性模型[J]. 化工学报, 2015, 66(3): 888-895.

BI Dapeng, ZHAO Yong, GUAN Qingliang, XUAN Weiwei, ZHANG Jiansheng. Modeling slag behavior in membrane wall gasifier[J]. CIESC Journal, 2015, 66(3): 888-895.

参考文献 20

[1]	Bi Dapeng (毕大鹏), Guan Qingliang (管清亮), Xuan Weiwei (玄伟伟), Zhang Jiansheng (张建胜), Yue Guangxi (岳光溪). Numerical simulation of GSP gasifier based on double-mixture fractions PDF model [J]. CIESC Journal (化工学报), 2014, 65 (10): 3753-3759
[2]	Gong X, Lu W X, Guo X L, Dai Z H, Liang Q F, Liu H F, Zhang H L, Guo B G. Pilot-scale comparison investigation of different entrained-flow gasification technologies and prediction on industrial-scale gasification performance [J]. Fuel, 2014, 129: 37-44
[3]	Wu Y X, Zhang J S, Smith P J, Zhang H, Charles R, Lv J F, Yue G X. Three-dimensional simulation for an entrained flow coal slurry gasifier [J]. Energy & Fuels, 2010, 24: 1156-1163
[4]	Chen C X, Masayuki H, Kojima T. Use of numerical modeling in the design and scale-up of entrained flow coal gasifier [J]. Fuel, 2001, 80: 1513-1523
[5]	Kumar M, Ghoniem A F. Multiphysics simulation of entrained flow gasification (Ⅰ): Validating the nonreacting flow solver and the particle turbulent dispersion model [J]. Energy & Fuels, 2012, 26: 451-463
[6]	Kumar M, Ghoniem A F. Multiphysics simulation of entrained flow gasification (Ⅱ): Constructing and validating the overall model [J]. Energy & Fuels, 2012, 26: 464-479
[7]	Ni J J, Guo Q H, Yu G S, Zhou Z J, Wang F C. Submodel for predicting slag deposition formation in slagging gasification systems [J]. Energy & Fuels, 2011, 25: 1004-1009
[8]	Tominaga F, Yamashita T, Ando T, Asahiro N. Simulator development of entrained flow coal gasifiers at high temperature and high pressure atmosphere [J]. IFRF Combustion Journal, 2000: Article No. 20004
[9]	Li S, Wu Y, Whitty K J. Ash deposition behavior during char-slag transition under simulated gasification conditions [J]. Fuel, 2006, 85 (2): 170-178
[10]	Seggiani M. Modeling and simulation of time varying slag flow in a Prenflo entrained-flow gasifier [J]. Fuel, 1998, 77 (14): 1611-1621
[11]	Bockelie M J, Denison M K, Chen Z M, Temi L, Senior C L, Sarofim A F. CFD modeling for entrained flow gasifiers in vision 21 system [OL]. http://www.reaction-eng.com, 2003
[12]	Yang Z W, Wang Z, Wu Y X, Wang J H, Lv J F, Li Z, Ni W D. Dynamic model for an oxygen-staged slagging entrained flow gasifier [J]. Energy & Fuels, 2011, 25: 3646-3656
[13]	Smith I W. The combustion rates if coal chars: a review//19th Symposium International on Combustion [C]. The Combustion Institute, Pittsburgh, 1982: 1045-1065
[14]	Abani N, Ghoniem A F. Large eddy simulations of coal gasification in an entrained flow gasifier [J]. Fuel, 2013, 104: 664-680
[15]	Sun B, Liu Y, Chen X, et al. Dynamic modeling and simulation of shell gasifier in IGCC[J]. Fuel Processing Technology, 2011, 92 (8): 1418-1425
[16]	Yong S Z, Gazzino M, Ghoniem A F. Modeling the layer built-up in solid fuel gasification and combustion-formation and sensitivity analysis [J]. Fuel, 2012, 92 (1): 162-170
[17]	Mills K C, Rhine J M. The measurement and estimation of the physical properties of slags formed during coal gasification (Ⅱ): Properties relevant to heat transfer [J]. Fuel, 1989, 68 (7): 904-910
[18]	Rezaei H R, Gupta R P, Bryant G W, et al. Thermal conductivity of coal ash and slags and models used [J]. Fuel, 2000, 79 (13): 1697-1710
[19]	NIST Chemistry WebBook [DB]. http://webbook.nist.gov/chemistry/ #Models
[20]	Yang Zhiwei (杨志伟). Dynamic modeling of entrained flow gasifiers [D]. Beijing: Tsinghua University, 2014

水冷壁气化炉内熔渣流动特性模型

Modeling slag behavior in membrane wall gasifier

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献 20

相关文章 15

编辑推荐

Metrics

本文评价

[1]	周绍华, 詹飞龙, 丁国良, 张浩, 邵艳坡, 刘艳涛, 郜哲明. 短管节流阀内流动噪声的实验研究及降噪措施[J]. 化工学报, 2023, 74(S1): 113-121.
[2]	张义飞, 刘舫辰, 张双星, 杜文静. 超临界二氧化碳用印刷电路板式换热器性能分析[J]. 化工学报, 2023, 74(S1): 183-190.
[3]	申利梅, 胡博兴, 谢雨霏, 曾伟豪, 张晓屿. 超薄平板热管传热性能的实验研究[J]. 化工学报, 2023, 74(S1): 198-205.
[4]	宋瑞涛, 王派, 王云鹏, 李敏霞, 党超镔, 陈振国, 童欢, 周佳琦. 二氧化碳直接蒸发冰场排管内流动沸腾换热数值模拟分析[J]. 化工学报, 2023, 74(S1): 96-103.
[5]	王玉兵, 李杰, 詹宏波, 朱光亚, 张大林. R134a在菱形离散肋微小通道内的流动沸腾换热实验研究[J]. 化工学报, 2023, 74(9): 3797-3806.
[6]	陈哲文, 魏俊杰, 张玉明. 超临界水煤气化耦合SOFC发电系统集成及其能量转化机制[J]. 化工学报, 2023, 74(9): 3888-3902.
[7]	韩晨, 司徒友珉, 朱斌, 许建良, 郭晓镭, 刘海峰. 协同处理废液的多喷嘴粉煤气化炉内反应流动研究[J]. 化工学报, 2023, 74(8): 3266-3278.
[8]	赵健, 周兴超, 夏丹, 董航. 机械搅拌对原油储罐射流加热过程传热特性的影响规律研究[J]. 化工学报, 2023, 74(5): 1982-1999.
[9]	周必茂, 许世森, 王肖肖, 刘刚, 李小宇, 任永强, 谭厚章. 烧嘴偏转角度对气化炉渣层分布特性的影响[J]. 化工学报, 2023, 74(5): 1939-1949.
[10]	葛泽峰, 吴雨青, 曾名迅, 查振婷, 马宇娜, 侯增辉, 张会岩. 灰化学成分对生物质气化特性的影响规律[J]. 化工学报, 2023, 74(5): 2136-2146.
[11]	王倩倩, 刘明言, 马永丽. 水中超声波脱气的效应研究[J]. 化工学报, 2023, 74(4): 1693-1702.
[12]	郑书闽, 郭鹏程, 颜建国, 王帅, 李文博, 周淇. 微小通道内过冷流动沸腾阻力特性实验及预测研究[J]. 化工学报, 2023, 74(4): 1549-1560.
[13]	张浩, 徐惠斌, 高健, 刘帝宏, 周泽华. Geldart-D类湿颗粒倾斜落料行为及其强化[J]. 化工学报, 2023, 74(4): 1519-1527.
[14]	杨辉著, 兰精灵, 杨月, 梁嘉林, 吕传文, 朱永刚. 高功率平板热管传热性能的实验研究[J]. 化工学报, 2023, 74(4): 1561-1569.
[15]	张永泉, 玄伟伟. 碱金属/（FeO+CaO+MgO）对硅酸盐灰熔渣结构和黏度的影响机理[J]. 化工学报, 2023, 74(4): 1764-1771.