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Alternative TitleEffect of particle density on combustion characteristics of refuse derived fuel
黎涛; 熊祖鸿; 房科靖; 鲁敏; 谢森; 熊培培
Source Publication农业工程学报
Abstract垃圾衍生燃料(RDF,refuse derived fuel)是垃圾焚烧发电的原料,该文研究RDF预加工的形态对其燃烧释放能量过程的影响。将RDF制备成不同密度等级的成型颗粒,通过热重、热值、灰分分析,同时参比与非成型的RDF和生物质秸秆燃料,观察RDF成型颗粒燃烧特性。研究结果表明,该组非成型RDF的着火点为234.0℃,3个最大失质量速率分别为6.30,2.21,0.53%min;高密度RDF的着火点为238.2℃,3个最大失质量速率分别为5.70,3.11,0.61%/min,表明较高密度RDF颗粒在燃烧过程中,着火点较高,燃烧速率较为均衡。该组高密度RDF比非成型RDF燃烧后的灰渣少6.7%,表明高密度RDF燃烧较为充分。在热值方面,方差显著性分析表明,RDF颗粒密度值对其燃烧产生的热值无明显影响。
Other AbstractWaste to energy(WTE)plants have been built more and more worldwide nowadays.It is one of the most successful types to resolve the impact of city rubbish on environment.Refuse derived fuel(RDF)is the fuel of WTE plant,which is made of combustible refuse such us cardboard,paper,various plastics,textile and wood.According to literature,the incineration process has the advantage of reducing waste weight by80%and volume by70%,and around25%-30%energy within RDF can be obtained through conversion of power facilities.Combustible refuse can be processed into pellets with physical density of more than0.3g/cm3through extrusion forming after separating,crushing,and drying procedure.In this paper,pelleted RDF with different densities of0.51,0.42,and0.31g/cm3was adopted in this experiment,and their combustion characteristics from30to900℃were investigated by means of thermogravimetric(TG),calorific value,and ash content analysis.Meanwhile,pelleted RDF was compared with non-pelleted RDF and straw which represented biomass fuel.By comparing TG of pelleted RDF and non-pelleted RDF,the results indicated that non-pelleted RDF was faster in burning,showing pelleted RDF can release energy slower,which is good for boiler equipment to absorb energy more efficiently.By comparing DTG of pelleted RDF and non-pelleted RDF,the ignition point of the non-pelleted RDF(0.10g/cm3)was234.0℃,and3maximum mass loss rates were6.30,2.21and0.53percentage points per minute,respectively;While for the highest density of pelleted RDF(0.51g/cm3),the ignition point was238.2℃,and3maximum mass loss rates were5.70,3.11,and0.61percentage points per minute,respectively,showing that the higher density,the higher ignition point,and the higher burning rate got more balance.DTG data also show that pelleted RDF is more suitable for the boiler to absorb heat efficiently.After finishing burning,the content of combustion ash coming from the highest density pelleted RDF sample in this experiment was6.7%less than that of the non-pelleted one,showing that procession of extrusion forming will help to reduce weight and volume of RDF ash,thus relieving the pressure of landfill,which is the most serious problem to our environment.For the burning calorific value,and the data from pelleted RDF and non-pelleted RDF checked by calorimeter,each sample was checked3times.By calculating all sample values with the method of variance analysis,F value was0.25,while df values between groups and within group were3and8,respectively,the final F0.05(3,8)value was4.07,and F0.01(3,8)value was7.59,thus F
Keyword垃圾 燃烧 生物质 RDF 密度 灰分 wastes combustion biomass refuse derived fuel RDF density ash
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Document Type期刊论文
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
黎涛,熊祖鸿,房科靖,等. 颗粒密度对垃圾衍生燃料燃烧特性的影响[J]. 农业工程学报,2017,33(23):241-245.
APA 黎涛,熊祖鸿,房科靖,鲁敏,谢森,&熊培培.(2017).颗粒密度对垃圾衍生燃料燃烧特性的影响.农业工程学报,33(23),241-245.
MLA 黎涛,et al."颗粒密度对垃圾衍生燃料燃烧特性的影响".农业工程学报 33.23(2017):241-245.
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