垃圾燃料在上升气流气化炉中的气化模拟与实验研究

T. Nguyen-Thi, Thi Minh Tu Bui, V. G. Bui
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引用次数: 2

摘要

由木材和松散稻壳的混合物制成的垃圾衍生燃料(RDF)增加了炉中燃料的孔隙率,以促进气化过程。模拟结果表明,CO主要集中在未完全燃烧区,CO2主要在完全燃烧区形成;CH4在还原区域中形成,而H2在熔炉的高温区域中形成。当混合物组成为f=0.3时,合成气中的CO浓度达到约21%,H2浓度达到约2%,CH4浓度太低而不能忽略。当混合物组成增加到f=0.5时,CO浓度达到约26%,H2浓度几乎保持不变,CH4含量增加到6%。当f=0.5并且还原区的温度在900K至1200K的范围内时,合成气的热值达到最大值。空气湿度影响CO浓度,但对CH4和H2浓度以及合成气热值影响不大。模拟结果和实验结果之间的差异对于CH4浓度不超过10%,对于CO2浓度不超过14%。与使用汽油时相比,使用合成气时火花点火式发动机的功率降低了30%。
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Simulation and experimental study of refuse-derived fuel gasification in an updraft gasifier
Refuse-derived fuel (RDF) made from the mixture of wood and loose rice husk increases the porosity of the fuel in the furnace to facilitate the gasification process. Simulation results show that CO is concentrated in the incomplete combustion zone and CO2 forms mainly in the fully burned area; CH4 forms in the reduction region, while H2 forms in the region of high temperature of the furnace. When the mixture composition was f=0.3, the CO concentration in the syngas reached about 21%, the H2 concentration reached about 2% and the CH4 concentration was too low to be ignored. When the mixture composition increased to f = 0.5, the CO concentration reached about 26%, the H2 concentration remained almost unchanged and the CH4 content increased to 6%. The calorific value of the syngas reached a maximum when f = 0.5 and the temperature of the reduction zone is in the range of 900K to 1200K. Air humidity affects CO concentration but not much on CH4 and H2 concentration as well as the syngas calorific value. The difference between simulation and experimental results is not more than 10% for CH4 concentration and not more than 14% for CO2 concentration. The power of the spark ignition engine is reduced by 30% when running on syngas compared to when running on gasoline.
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来源期刊
CiteScore
4.50
自引率
16.00%
发文量
83
审稿时长
8 weeks
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