Study on drying and combustion process in grate-CFB incinerator

Study on drying and combustion process in grate-CFB incinerator
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炉排-CFB焚烧炉干燥燃烧过程研究

DOI:
10.1007/s11431-008-0182-x
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发表时间:
2009-05
期刊:
Science in China Series E-Technological Sciences
影响因子:
--
通讯作者:
Chen MeiQian
Chen MeiQian
中科院分区:
其他
文献类型:
--
作者:
Li QingHai;Chen ChangHe;Meng AiHong;Zhang YanGuo;Chen MeiQian

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对炉排-循环流化床组合式垃圾焚烧炉内的干燥和燃烧过程进行了实验研究和数学分析。采用恒温控制的热风炉模拟篦床干燥过程。研究了物料种类、料层厚度和温度对干燥过程的影响。实验结果表明,亲水性废弃物比疏水性废弃物更难干燥。温度越高,废物越容易干燥。较薄的废物层有利于废物的干燥。炉内热解实验表明,较高的温度水平会降低碳向一氧化碳的转化率。提出了包括床料分布子模型、挥发分释放子模型、碳粒燃烧子模型等的半经验数学模型。对一台260 t/d炉排-循环流化床焚烧炉进行了模拟计算,模型预测的堆密度与工业现场试验的实测值吻合较好。预测的烟气(例如CO2、CO)浓度与工业试验数据略有偏差。模型中的参数和变量由试验或现场实测确定。该模型可用于炉排-循环流化床焚烧炉的设计和运行指导。
The drying and combustion process in the combined grate and circulating fluidized bed (grate-CFB) municipal solid waste (MSW) incinerator was investigated experimentally and mathematically. The drying grate bed was simulated by a muffle furnace, which could be controlled at a constant temperature level. The kind of wastes, thickness of waste layer fed and temperature were chosen as the adjustable parameters to study their effect on the drying process. The experimental results indicated that the hydrophilic wastes were more difficult to be dried than the hydrophobic wastes. The higher the temperature is the easier the waste is to be dried. The thinner waste layer is favorable to drying the waste. The pyrolysis experiment in the furnace showed that the higher temperature level could reduce the conversion rate of carbon to carbon monoxide. The semi-empirical mathematical model that included the bed material distribution submodel, volatile matter release submodel, carbon particle combustion submodel and so on was proposed. A 260 t/d grate-CFB incinerator was modeled and the model predicted bulk density agreed with the measured value from industrial field test. The predicted flue gas (e.g. CO2, CO) concentration deviated slightly from the industrial test data. The parameters and variables used in the model were determined by the experiments or practical field test. This model can be used to design the grate-CFB incinerator and guide its operation.
DOI: 10.1016/s0956-053x(02)00019-3
发表时间: 2002-07
期刊: Waste management
影响因子: 8.1
作者:
Y. Yang;Y. R. Goh;Ridzuan Zakaria;V. Nasserzadeh;J. Swithenbank
通讯作者: Y. Yang;Y. R. Goh;Ridzuan Zakaria;V. Nasserzadeh;J. Swithenbank
DOI: 10.1021/es071416g
发表时间: 2007-11-01
影响因子: 11.4
作者:
Cheng, Hefa;Zhang, Yanguo;Li, Qinghai
通讯作者: Li, Qinghai
DOI: --
发表时间: 2006
期刊: Science Technology and Engineering
影响因子: --
作者:
Liu Qinghai
通讯作者: Liu Qinghai
DOI: 10.1007/s11431-007-0068-3
发表时间: 2007-10
期刊: Science in China Series E-Technological Sciences
影响因子: --
作者:
Meng, AiHong;Zhang, YanGuo;Chen, MeiQian;Li, QingHai;Chen, YunXuan
通讯作者: Chen, YunXuan
DOI: 10.1016/s0016-2361(98)00060-x
发表时间: 1998-10-01
期刊: FUEL
影响因子: 7.4
作者:
Desroches-Ducarne, E;Dolignier, JC;Delfosse, L
通讯作者: Delfosse, L