CAJ | 학술논문

污泥秸秆衍生燃料技术是一种有效的污泥无害化、资源化处理技术。研究了通过化学调质法制备的污泥秸秆衍生固体燃料的燃烧特性，为污泥衍生燃料的应用提供理论依据。在升温速率为20K／min、流量为70mL／min的空气介质中，实验研究了4种污泥秸秆衍生固体燃料的着火特性、燃尽特性及综合燃烧性能，并求出了相关动力学参数。结果表明：燃料的燃烧过程分为干燥脱水、第一类有机物分解挥发及燃烧、第二类有机物的分解挥发及燃烧和固定碳的燃烧4个阶段，其温度范围大致为295-475K、475-650K、660-840K和900-1000K，前3个阶段有相互交叉和重叠的现象；4种燃料燃烧的着火点均在490-515K内，燃尽指数Cb最小为5．10×0^-3min^-1，综合燃烧特性指数S最小为10．80×10^-10mg^2．min^-2．K^-3，1000K内可完全燃烧；第一类挥发份的燃烧是二级反应，而第二类挥发份及固定碳的燃烧为一级反应，反应的活化能最大为64．80kJ／mol，与污泥单烧及煤混烧相比，污泥固体燃料燃烧性能更好，可作替代燃料使用。
오니갈간연생연료기술시일충유효적오니무해화、자원화처리기술。연구료통과화학조질법제비적오니갈간연생고체연료적연소특성，위오니연생연료적응용제공이론의거。재승온속솔위20K／min、류량위70mL／min적공기개질중，실험연구료4충오니갈간연생고체연료적착화특성、연진특성급종합연소성능，병구출료상관동역학삼수。결과표명：연료적연소과정분위간조탈수、제일류유궤물분해휘발급연소、제이류유궤물적분해휘발급연소화고정탄적연소4개계단，기온도범위대치위295-475K、475-650K、660-840K화900-1000K，전3개계단유상호교차화중첩적현상；4충연료연소적착화점균재490-515K내，연진지수Cb최소위5．10×0^-3min^-1，종합연소특성지수S최소위10．80×10^-10mg^2．min^-2．K^-3，1000K내가완전연소；제일류휘발빈적연소시이급반응，이제이류휘발빈급고정탄적연소위일급반응，반응적활화능최대위64．80kJ／mol，여오니단소급매혼소상비，오니고체연료연소성능경호，가작체대연료사용。
The sludge-straws derived fuel technology is an effective method to realize the harmlessness and recycling of sludge. At a 70mL/min air ambient with a heating rate of 20K and a temperature range of 293-1 173 K, this study characterized the combustion behaviors （ignition characteristic, burnout behavior and the integrative combustion performance） and obtained kinetic parameters of four kinds sludge-straw fuels derived by chemical conditioning, in order to provide theoretical basis for industrial application of these fuels. The results show that the combustion process of these fuels includes four stages, which are the fuel drying, combustion of the first type volatile, combustion of the second type volatile and combustion of fixed carbon. The corresponding temperature range is about 295.-475 K, 475-650 K, 660-840 K and 900- 1 000 K respectively. The first three stages are intersected and overlapping. The ignition temperature, bum out temperature, the least burnout index Cb and integrative combustion performance index S of these four kinds of fuels is about 490- 515K, 1 000K, 5.10×10^-3min^-land 10.80×10^-1mg^2.min^-2.K^-3 respectively. The dynamic analysis results show that the second stage could be expressed by the second-order reactions together with Arrhenius equation, while the combustion reactions of the third stage and fixed carbon stages are accordance with first-order reaction. The maximum activation energy of these stages is only 64.80 kJ/mol. The studies demonstrate that sludge-derived fuel has better combustion characteristics than single sludge or mixture of sludge and coal, and could be used as substituted fuel.