包装垃圾添加脱氯半焦制备SRF的燃烧特性及动力学分析
|
摘要
利用热重分析仪对添加了不同比例混合含氯塑料经微波低温脱氯后的脱氯半焦制备而成的固体衍生燃料(SRF)的燃烧特性及热反应动力学进行了实验研究,考察了脱氯半焦不同添加比例制备的SRF的着火点、燃尽温度、最大燃烧速率、燃尽特征指数和综合燃烧指数等燃烧特征参数。并用Coats-Redfern积分法对其进行了燃烧动力学分析,确定了燃烧动力学方程,求出了反应活化能和指前因子。结果表明:随着脱氯半焦的添加比例从5%增加至20%,TG曲线向低温区移动,着火点降低,燃尽温度降低,燃尽性能提升,综合燃烧特性指数S均高于不添加脱氯半焦的燃料,综合燃烧性能更好;当脱氯半焦添加比例为10%,综合燃烧特征参数最佳;在第三燃烧阶段,添加了脱氯半焦的燃料的活化能显著低于未添加脱氯半焦的燃料,指前因子降低了4~5个数量级。混合含氯废塑料,经过微波低温脱氯处理形成半焦作为添加剂制备SRF,不仅降低了SRF燃烧过程中氯化氢的产生量,同时提高了燃料的燃烧性能,是含氯塑料废弃物利用的一种新的方向和途径。
Experimental research on combustion characteristics and thermal reaction dynamics kinetics of solid recovered fuel( SRF) making of package waste with dechlorinated char was conducted on thermo-gravimetric analyzer. The dechlorinated char was formed from mixture chlorinated waste by low temperature microwave irradiation dechlorination The combustion characteristic parameters such as ignition temperature,burnout temperature,maximum combustion rate and burnout ratio of SRFs were investigated. Besides,the Coats-Redfern integral method was used to determine the combustion dynamics equations,activation energy and pre-exponential factor.The results indicated that with the dosage of dechlorinated char increased from 5% to 20%,the thermo-gravimetric curve gradually shifted to low temperature zone,the ignition temperature and burnout temperature declined,the burnout ratio increased,the comprehensive combustion index were higher and the comprehensive combustion performance were much better. Moreover,the SRF with dechlorinated char dosage of 10% had the best combustion features. In the third combustion stage,the activation energy of the fuel with the addition of the dechlorinated char was significantly lower than that of the fuel with non dechlorinated char added and the pre exponential factor decreased by 4 ~ 5 orders of magnitude. Hence,the dechlorinated char used as an additive for preparingSRF is not only reducing the amount of HCl in the SRF combustion process but also improving the combustion performance of the fuel. It is a new direction and way of chlorine plastic waste utilization.
Experimental research on combustion characteristics and thermal reaction dynamics kinetics of solid recovered fuel( SRF) making of package waste with dechlorinated char was conducted on thermo-gravimetric analyzer. The dechlorinated char was formed from mixture chlorinated waste by low temperature microwave irradiation dechlorination The combustion characteristic parameters such as ignition temperature,burnout temperature,maximum combustion rate and burnout ratio of SRFs were investigated. Besides,the Coats-Redfern integral method was used to determine the combustion dynamics equations,activation energy and pre-exponential factor.The results indicated that with the dosage of dechlorinated char increased from 5% to 20%,the thermo-gravimetric curve gradually shifted to low temperature zone,the ignition temperature and burnout temperature declined,the burnout ratio increased,the comprehensive combustion index were higher and the comprehensive combustion performance were much better. Moreover,the SRF with dechlorinated char dosage of 10% had the best combustion features. In the third combustion stage,the activation energy of the fuel with the addition of the dechlorinated char was significantly lower than that of the fuel with non dechlorinated char added and the pre exponential factor decreased by 4 ~ 5 orders of magnitude. Hence,the dechlorinated char used as an additive for preparingSRF is not only reducing the amount of HCl in the SRF combustion process but also improving the combustion performance of the fuel. It is a new direction and way of chlorine plastic waste utilization.
引文
[1]2016年全国大、中城市固体废物污染环境防治年报[J].中国资源综合利用,2016,34(11):14-20
[2]中国环境保护产业协会城市生活垃圾处理专业委员会.城市生活垃圾处理行业2014年发展综述[J].中国环保产业,2015(11):15-23
[3]WAGLAND S T,KILGALLON P,COVENEY R.Comparison of coal/solid recovered fuel(SRF)with coal/refuse derived fuel(RDF)in a fluidized bed reactor[J].Waste Management,2011,31(6):1176-1183
[4]HO K,DOANE E P.Current evidence concerning coal chlorine content and fire side corrosion in coal-fired PC and fluidized bed boilers[J].Fuel and Energy Abstracts,2002,43(3):203-204
[5]郭小汾,杨雪莲,陈勇,等.垃圾衍生燃料(RDF)的燃烧特性研究[J].太阳能学报,2001,22(3):286-290
[6]LIU Zhen,WANG Hanqing ZHANG Xiaodong et al.Dechlorination of organochloride waste mixture by microwave irradiation before forming solid recovered fuel[J].Waste Management,2016,62:118-124
[7]包向军,蔡九菊,刘汉桥,等.垃圾混煤热解特性的实验研究[J].工程热物理学报,2004,25(4):691-694
[8]解海卫,张艳,张于峰.生物质与城市生活垃圾混烧特性的实验研究[J].热能动力工程,2010,25(3):340-343
[9]EDO M,BUDARIN V,ARACIL I,et al.The combined effect of plastics and food waste accelerated the thermal decomposition of refuse-derived fuels and fuel blends[J].Fuel,2016,180:424-432
[10]吕清刚,那永洁,包绍麟,等.城市垃圾与煤在CFBC试验台上的混烧试验[J].工程热物理学报,2003,24(2):347-350
[11]刘建华,蔡飞.生活阿拉基掺烧无烟煤燃烧特性热重实验分析[J].集美大学学报(自然科学版),2009,14(4):394-398
[12]刘晶晶,吴奇,李倦生.生活垃圾与煤混合燃烧特性及动力学分析[J].环境工程学报,2016,10(2):915-921
[13]陈正华,王雪茜,孙军.城市垃圾与煤混合燃烧特性分析[J].节能技术,2015,33(6):522-525
[14]FANG Shiwen,YU Zhaosheng,LIN Yan,et al.A study on experimental characteristic of co-pyrolysis of municipal solid waste and paper mill sludge with additives[J].Applied Thermal Engineering,2017,111(25):292-300
[15]宋志伟,吕一波,梁洋,等.新型复合垃圾衍生燃料的制备及性能分析[J].环境工程学报,2007,1(6):114-117
[16]THUNMAN H,LECKNER B.Ignition and propagation of a reaction front in cross-Current bed combustion of wet biofuels[J].Fuel,2001,80:473-481
[17]闵凡飞,张明旭.生物质燃烧模式及燃烧特性的研究[J].煤炭学报,2005,30(1):104-108
[18]秦成,田文栋,肖云汉.垃圾衍生燃料热重法的燃烧特性[J].燃烧科学与技术,2004,10(3):232-236.
[19]朱明,祝慰,王发洲,等.城市生活垃圾制备的RDF的热工性能研究[J].可再生能源,2014,32(12):1928-1932
[20]范杜平.基于Kooij定律新型燃烧指标在湛江电厂的应用[D].武汉:华中科技大学,2006
[21]LIN Y,MA X,PENG X,et al.Effect of hydrothermal carbonization temperature on combustion behavior of hydrochar fuel from paper sludge[J].Applied Thermal Engineering,2015,91:574-582
[22]卢洪波,戴惠玉,马玉鑫.生物质三组分燃烧特性及动力学分析[J].农业工程学报,2012,28(17):186-191
[23]王春波,雷鸣,阎维平,等.煤粉的增压富氧燃烧特性及煤灰矿物演变[J].燃料化学学报,2012,40(7):790-794
[24]张超群,于立军,崔志刚,等.超细与常规煤粉燃烧动力学特性及计算分析[J].化工学报,2005,56(11):2189-2194
[25]姜秀民,李巨斌,邱健荣,等.超细化煤粉燃烧特性的研究[J].中国电机工程学报,2000,20(6):71-74
[26]MUTHURAMAN Marisamy,NAMIOKA Tomoaki,YOSHIKAWA Kunio.A comparison of co-combustion characteristics of coal with wood and hydrothermally treated municipal solid waste[J].Bioresource Technology,2010(101):2477-2482
[27]SUN Rui,TAMER M I,REN Xiaohan,et al.Effect of ash content on the combustion process of simulated MSW in the fixed bed[J].Waste Management,2016,48:236-249
[28]YAO Zhongliang,MA Xiaoqian,WANG Zihuan et al.Characteristics of co-combustion and kinetic study on hydrochar with oil shale:A thermogravimetric analysis[J].Applied Thermal Engineering,2017,110:1420-1427
[29]LAI Z,MA X,TANG Y,et al.Thermogravimetric analyses of combustion of lignocellulosic materials in N2/O2and CO2/O2atmospheres[J].Bioresoure Technology,2012,107:444-450
[30]蒋绍坚,王涛,彭好义,等.木质和玉米秸秆成型燃料热重分析与燃烧动力学[J].中南大学学报(自然科学版),2013,44(10):4312-4318
[31]胡荣祖,高胜利,赵凤起,等.热分析动力学[M].2版.北京:科学出版社,2008:20-21/54-55
[32]SAIT H H,HUSSAIN A,SALEMA A A,et al.Pyrolysis and combustion kinetics of date palm biomass using ther-mogravimetric analysis[J].Bioresource Technology,2012,118:382-389
[2]中国环境保护产业协会城市生活垃圾处理专业委员会.城市生活垃圾处理行业2014年发展综述[J].中国环保产业,2015(11):15-23
[3]WAGLAND S T,KILGALLON P,COVENEY R.Comparison of coal/solid recovered fuel(SRF)with coal/refuse derived fuel(RDF)in a fluidized bed reactor[J].Waste Management,2011,31(6):1176-1183
[4]HO K,DOANE E P.Current evidence concerning coal chlorine content and fire side corrosion in coal-fired PC and fluidized bed boilers[J].Fuel and Energy Abstracts,2002,43(3):203-204
[5]郭小汾,杨雪莲,陈勇,等.垃圾衍生燃料(RDF)的燃烧特性研究[J].太阳能学报,2001,22(3):286-290
[6]LIU Zhen,WANG Hanqing ZHANG Xiaodong et al.Dechlorination of organochloride waste mixture by microwave irradiation before forming solid recovered fuel[J].Waste Management,2016,62:118-124
[7]包向军,蔡九菊,刘汉桥,等.垃圾混煤热解特性的实验研究[J].工程热物理学报,2004,25(4):691-694
[8]解海卫,张艳,张于峰.生物质与城市生活垃圾混烧特性的实验研究[J].热能动力工程,2010,25(3):340-343
[9]EDO M,BUDARIN V,ARACIL I,et al.The combined effect of plastics and food waste accelerated the thermal decomposition of refuse-derived fuels and fuel blends[J].Fuel,2016,180:424-432
[10]吕清刚,那永洁,包绍麟,等.城市垃圾与煤在CFBC试验台上的混烧试验[J].工程热物理学报,2003,24(2):347-350
[11]刘建华,蔡飞.生活阿拉基掺烧无烟煤燃烧特性热重实验分析[J].集美大学学报(自然科学版),2009,14(4):394-398
[12]刘晶晶,吴奇,李倦生.生活垃圾与煤混合燃烧特性及动力学分析[J].环境工程学报,2016,10(2):915-921
[13]陈正华,王雪茜,孙军.城市垃圾与煤混合燃烧特性分析[J].节能技术,2015,33(6):522-525
[14]FANG Shiwen,YU Zhaosheng,LIN Yan,et al.A study on experimental characteristic of co-pyrolysis of municipal solid waste and paper mill sludge with additives[J].Applied Thermal Engineering,2017,111(25):292-300
[15]宋志伟,吕一波,梁洋,等.新型复合垃圾衍生燃料的制备及性能分析[J].环境工程学报,2007,1(6):114-117
[16]THUNMAN H,LECKNER B.Ignition and propagation of a reaction front in cross-Current bed combustion of wet biofuels[J].Fuel,2001,80:473-481
[17]闵凡飞,张明旭.生物质燃烧模式及燃烧特性的研究[J].煤炭学报,2005,30(1):104-108
[18]秦成,田文栋,肖云汉.垃圾衍生燃料热重法的燃烧特性[J].燃烧科学与技术,2004,10(3):232-236.
[19]朱明,祝慰,王发洲,等.城市生活垃圾制备的RDF的热工性能研究[J].可再生能源,2014,32(12):1928-1932
[20]范杜平.基于Kooij定律新型燃烧指标在湛江电厂的应用[D].武汉:华中科技大学,2006
[21]LIN Y,MA X,PENG X,et al.Effect of hydrothermal carbonization temperature on combustion behavior of hydrochar fuel from paper sludge[J].Applied Thermal Engineering,2015,91:574-582
[22]卢洪波,戴惠玉,马玉鑫.生物质三组分燃烧特性及动力学分析[J].农业工程学报,2012,28(17):186-191
[23]王春波,雷鸣,阎维平,等.煤粉的增压富氧燃烧特性及煤灰矿物演变[J].燃料化学学报,2012,40(7):790-794
[24]张超群,于立军,崔志刚,等.超细与常规煤粉燃烧动力学特性及计算分析[J].化工学报,2005,56(11):2189-2194
[25]姜秀民,李巨斌,邱健荣,等.超细化煤粉燃烧特性的研究[J].中国电机工程学报,2000,20(6):71-74
[26]MUTHURAMAN Marisamy,NAMIOKA Tomoaki,YOSHIKAWA Kunio.A comparison of co-combustion characteristics of coal with wood and hydrothermally treated municipal solid waste[J].Bioresource Technology,2010(101):2477-2482
[27]SUN Rui,TAMER M I,REN Xiaohan,et al.Effect of ash content on the combustion process of simulated MSW in the fixed bed[J].Waste Management,2016,48:236-249
[28]YAO Zhongliang,MA Xiaoqian,WANG Zihuan et al.Characteristics of co-combustion and kinetic study on hydrochar with oil shale:A thermogravimetric analysis[J].Applied Thermal Engineering,2017,110:1420-1427
[29]LAI Z,MA X,TANG Y,et al.Thermogravimetric analyses of combustion of lignocellulosic materials in N2/O2and CO2/O2atmospheres[J].Bioresoure Technology,2012,107:444-450
[30]蒋绍坚,王涛,彭好义,等.木质和玉米秸秆成型燃料热重分析与燃烧动力学[J].中南大学学报(自然科学版),2013,44(10):4312-4318
[31]胡荣祖,高胜利,赵凤起,等.热分析动力学[M].2版.北京:科学出版社,2008:20-21/54-55
[32]SAIT H H,HUSSAIN A,SALEMA A A,et al.Pyrolysis and combustion kinetics of date palm biomass using ther-mogravimetric analysis[J].Bioresource Technology,2012,118:382-389