Please wait a minute...
浙江大学学报(工学版)
机械与能源工程     
垃圾焚烧炉排炉二次风配风的CFD优化模拟
刘瑞媚, 刘玉坤, 王智化, 刘颖祖, 胡利华,邵哲如, 岑可法
1.浙江大学 能源清洁利用国家重点实验室,浙江 杭州 310027
2.光大环保技术装备(常州)有限公司,江苏 常州 213011
CFD simulation and optimization of secondary air distribution for waste combustion in grate furnace
LIU Rui-mei, LIU Yu-kun, WANG Zhi-hua, LIU Ying-zu, HU Li-hua, SHAO Zhe-ru, CEN Ke-fa
1. State Key Laboratory of Clean Energy Utilization, Zhengjiang University, Hangzhou 310027, China;
2.  Everbright Environmental Protection Technology and Equipment Co. Ltd, Changzhou 213011, China
 全文: PDF(2414 KB)   HTML
摘要:

为探究二次风配风对炉排炉中城市固体垃圾焚烧过程的影响,针对某750 t/d垃圾焚烧炉排炉,采用数值模拟的方法对炉膛焚烧过程进行热态模拟,就下二次风投、停运,上二次风布置形式和上二次风风速3个因素进行优化分析.模拟结果显示,通过在炉拱下方增加下二次风能对炉膛前、后炉拱形成包覆作用,阻挡高温烟气冲刷,有利于改善炉拱区域的结渣问题|炉膛上二次风对冲布置或适当增大二次风风速 (从45 m/s增大至65 m/s) 均能有效促进烟气混合,提高炉膛烟气的充满度,改善温度分布的均匀性|上二次风对冲布置较错列布置能进一步提高烟气停留时间,降低炉膛出口的CO体积分数,从而提高燃烧效率.

Abstract:
Waste combustion simulation with computational fluld dynamics (CFD) method in a 750 t/d grate furnace was presented to investigate the effect of secondary air distribution on municipal solid waste (MSW) combustion. An optimization analysis was employed to study the effect of lower secondary air operation condition, higher secondary air arrangement and lower secondary air velocity. The simulation results indicate that the scour by high temperature flue gas can be prevented by applying lower secondary air below arches of front and back walls, therefore the high temperature corrosion of arch area can be improved. Opposed arrangement and larger velocity (ranging from 45 m/s to 65 m/s) of higher secondary air both can promote the full mixing of flue gas, improving the furnace fullness and temperature uniformity. Compared to staggered arrangement, opposed arrangement is more favorable for prolonging gas residence time, lowering outlet concentration of CO and improving the combustion efficiency.
出版日期: 2017-03-01
CLC:  TK 224.1  
基金资助:

国家“973”重点基础研究发展规划资助项目(2012CB214906)

通讯作者: 王智化,男,教授.ORCID: 0000-0002-7521-2900.     E-mail: wangzh@zju.edu.cn
作者简介: 刘瑞媚(1992—),女,硕士生,从事垃圾焚烧炉排炉的数值模拟研究.ORCID: 0000-0002-8327-2655. E-mail: liuruimei@zju.edu.cn
服务  
把本文推荐给朋友
加入引用管理器
E-mail Alert
作者相关文章  

引用本文:

刘瑞媚, 刘玉坤, 王智化, 刘颖祖, 胡利华,邵哲如, 岑可法. 垃圾焚烧炉排炉二次风配风的CFD优化模拟[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2017.03.010.

LIU Rui-mei, LIU Yu-kun, WANG Zhi-hua, LIU Ying-zu, HU Li-hua, SHAO Zhe-ru, CEN Ke-fa. CFD simulation and optimization of secondary air distribution for waste combustion in grate furnace. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2017.03.010.

[1] 中华人民共和国国家统计局. 中国统计年鉴2014 [EB/OL]. (2014-10-23)[2016-09-20]. http:∥www.stats.gov.cn/tjsj/ndsj/2014/indexch.htm
[2] 国务院办公厅.“十二五”全国城镇生活垃圾无害化处理设施建设规划[EB/OL]. (2012-05-04)[2016-09-20]. http:∥www.gov.cn/zwgk/2012-05/04/content_2129302.htm
[3] 白良成,卜亚明,刘庆丽,等.我国生活垃圾焚烧工程分析[J]. 中国环保产业,2012(2): 25-29.
BAI Liang-cheng, BU Ya-ming, LIU Qing-li, et al. Engineering analysis on China’s municipal solid waste incineration [J]. China Environmental Protection Industry, 2012(2): 25-29.
[4] 胡建民,张宾,邵哲如,等.500 t/d往复炉排垃圾焚烧锅炉炉内燃烧过程数值模拟[J].资源节约与环保,2014, 2: 11-12.
HU Jian-min, ZHANG Bin, SHAO Zhe-ru, et al.Numerical modelling of waste combustion in a 500 t/d reciprocating grate boiler [J]. Resources Economization and Environment, 2014, 2: 11-12.
[5] 马剑.基于ANSYS Fluent系统的炉排炉垃圾焚烧过程数值模拟[J].能源环境保护,2014, 28(2):  26-30.
MA Jian. Numerical simulation of the mechanical grate garbage incinerator system based on ANSYS Fluent [J]. Energy Environmental Protection, 2014, 28(2): 26-30.
[6] KEAR S K. Numerical modelling of a straw-fired grate boiler [J]. Fuel, 2004, 83(9): 1183-1190.
[7] YIN C, ROSENDAHL L, CLAUSEN S, et al. Characterizing and modeling of an 88 MW grate-fired boiler burning wheat straw: experience and lessons [J]. Energy, 2012, 41(1): 473-482.
[8] YIN C, ROSENDAHL L, KEAR S K, et al. Mathematical modeling and experimental study of biomass combustion in a thermal 108 MW grate-fired boiler [J]. Energy and Fuels, 2008, 22(2): 1380-1390.
[9] YU Z, MA X, LIAO Y. Mathematical modeling of combustion in a grate-fired boiler burning straw and effect of operating conditions under air-and oxygen-enriched atmospheres [J]. Renewable Energy, 2010,35(5): 895-903.
[10] 马晓茜,卢苇,张笑冰,等.垃圾焚烧炉热力模型研究[J].化学工程,2000,28(4): 36-40.
MA Xiao-qian, LU Wei, ZHANG Xiao-bing, et al.A study on the thermodynamic model for waste incineration [J]. Chemical Engineering, 2000, 28(4): 36-40.
[11] 赖志燚,马晓茜,余昭胜.前后拱和二次风对垃圾焚烧炉燃烧影响研究[J].锅炉技术,2011,42(4): 70-74.
LAI Zhi-yi, MA Xiao-qian, YU Zhao-sheng. Study on the influence of arch and secondary air on the combustion in a MSW incinerator [J]. Boiler Technology, 2011, 42(4): 70-74.
[12] LIANG Z, MA X. Mathematical modeling of MSW combustion and SNCR in a full-scale municipal incinerator and effects of grate speed and oxygenenriched atmospheres on operating conditions [J]. Waste Management, 2010, 30(12): 2520-2529.
[13] 胡玉梅,王传宾,朱新才,等.垃圾焚烧炉二次配风优化数值模拟[J].环境工程学报,2009, 3(5):  951-955.
HU Yu-mei, WANG Chuan-bin, ZHU Xin-cai, et al. Optimization and numerical simulation of secondary air induction into refuse incinerator [J]. Chinese Jounal of Environmental Engineering, 2009, 3(5): 951-955.
[14] 朱新才,王传宾,邵毅敏,等.垃圾焚烧炉二次燃烧的数值模拟[J].动力工程,2009,29(3): 261-264.
ZHU Xin-cai, WANG Chuan-bin, SHAO Yi-min, et al. Numerical simulation of secondary combustion in waste incinerator [J]. Chinese Journal of Power Engineering, 2009, 29(3): 261-264.
[15] YANG Y B, YAMAUCHI H, NASSERZADEH V, et al. Effects of fuel devolatilisation on the combustion of wood chips and incineration of simulated municipal solid wastes in a packed bed [J]. Fuel, 2003, 82(18): 2205-2221.
[16] RYU C K, YANG Y B, et al. Thermal reaction modeling of a large municipal solid waste incinerator [J]. Combustion Science and Technology, 2004, 176(11): 1891-1907.
[17] YANG Y B, GOH Y R, ZAKARIA R, et al. Mathematical modelling of MSW incineration on a travelling bed [J]. Waste Management, 2002, 22(4): 369-80.
[18] 唐侠.关于垃圾焚烧炉结焦问题的探讨[J].热电技术, 2009(2): 3-5.
TANG Xia. A discussion on coking problem of waste incinerator [J]. Cogeneration Power Technology,2009(2): 3-5.
[19] 李科熙.浅析垃圾发电厂余热锅炉结焦原因及解决对策[J].机电信息,2013(27): 55-56.
LI Ke-xi. Study on factors and solutions of coking problem in waste incinerators [J]. Mechanical andElectrical Information. 2013(27): 55-56.
[20] 中华人民共和国环境保护部.生活垃圾焚烧污染控制标准: GB 18485—2014[S/OL]. 北京: 中国环境科学出版社, 2014. [2016-09-20].
http:∥kjs.mep.gov.cn/hjbhbz/bzwb/gthw/gtfwwrkzbz/200201/t20020101_63051.htm
[1] 温智勇,胡敏,杨玉,莫桂源,岑可法. 联合空气分级与SNCR在300 MW锅炉上的应用[J]. J4, 2014, 48(1): 63-69.