污泥-花生壳共热解气相产物研究
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摘要
采用外热式反应釜,以CH_3COOK为催化剂进行污泥-花生壳共热解气相产物的研究。考察花生壳添加量、热解温度、催化剂添加量、热解时间对共热解气相产物的产率、组成和热值的影响。研究结果表明:随着花生壳添加量的增加,气相产物的产率和热值均先增大后减小,花生壳添加量为80%时,气体热值达到最大,CH_4体积百分数达到10.57%;随着热解温度的升高,气相产物的产率和热值均先增大后减小,H_2体积百分数呈增大趋势,热解温度为600℃时,气体热值达到最大,CH_4体积百分数达到21.86%;随着催化剂添加量的增加,气相产物的产率和热值均先增大后减小,催化剂添加量为6%时气体热值达到最大;随着热解时间的延长,气相产率迅速增大后趋于平缓,气体热值缓慢增大后减小,热解时间为150 min时,气体热值达到最大值27.92MJ/m3,CH_4体积百分数达到28.33%。
The gas phase product of sludge-peanut shells co-pyrolysis was studied, by using CH3 COOK as catalyst in external heated reactor. The effects of peanut shells weight percent,pyrolysis temperature, the catalyst weight percent and pyrolysis time on the yield, the composition and calorific value of co-pyrolysis gas phase product were studied. The results showed that with the increase of peanut shells weight percent, the yield and calorific value of gas phase product were firstly increased and then decreased. When it was 80%, gas calorific value was maximum, the volume percentage of CH_4 was 10.57%.With the increase of pyrolysis temperature, the yield and calorific value of gas phase product were firstly increased and then decreased, the volume percentage of H_2 showed a trend of increase. When it was 600 ℃, gas calorific value was maximum,the volume percentage of CH_4 was 21.86%. With the increase of the catalyst weight percent, the yield and calorific value of gas phase product were firstly increased and then decreased. When it was 6%, gas calorific value was maximum. With the increase of pyrolysis time, the yield of gas phase product was increased rapidly then leveling off, the calorific value of gas was increasing slowly and then decreasing, which can reach the maximum value over 27.92 MJ/m3 and the volume percentage of CH_4 was 28.33% at 150 min.
The gas phase product of sludge-peanut shells co-pyrolysis was studied, by using CH3 COOK as catalyst in external heated reactor. The effects of peanut shells weight percent,pyrolysis temperature, the catalyst weight percent and pyrolysis time on the yield, the composition and calorific value of co-pyrolysis gas phase product were studied. The results showed that with the increase of peanut shells weight percent, the yield and calorific value of gas phase product were firstly increased and then decreased. When it was 80%, gas calorific value was maximum, the volume percentage of CH_4 was 10.57%.With the increase of pyrolysis temperature, the yield and calorific value of gas phase product were firstly increased and then decreased, the volume percentage of H_2 showed a trend of increase. When it was 600 ℃, gas calorific value was maximum,the volume percentage of CH_4 was 21.86%. With the increase of the catalyst weight percent, the yield and calorific value of gas phase product were firstly increased and then decreased. When it was 6%, gas calorific value was maximum. With the increase of pyrolysis time, the yield of gas phase product was increased rapidly then leveling off, the calorific value of gas was increasing slowly and then decreasing, which can reach the maximum value over 27.92 MJ/m3 and the volume percentage of CH_4 was 28.33% at 150 min.
引文
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[11]焦李.脱水污泥/生物质共热解特性研究[D].武汉:华中科技大学,2013.[11]Jiao Li.Study of the co-pyrolysis of dewatered sewage sludge and biomass[D].Wuhan:Huazhong University of Science and Technology,2013.
[12]张艳丽,肖波,胡智泉,等.污泥热解残渣水蒸气气化制取富氢燃气[J].可再生能源,2012,30(1):67-71.[12]Zhang Yanli,Xiao Bo,Hu Zhiquan,et al.Preparation of hydrogen-rich gas from steam gasification of sludge pyrolysis residues[J].Renewable Energy Resources,2012,30(1):67-71.
[13]王志远,徐宏,栾小建,等.Si O2/S涂层与乙酸钾抗结焦性能的对比[J].石油学报(石油加工),2012,28(1):149-154.[13]Wang Zhiyuan,Xu Hong,Luan Xiaojian,et al.Comparision between the anti-coking properties of Si O2/S coating and potassium acetate[J].Acta Petrolei Sinica(Petroleum Processing Section),2012,28(1):149-154.
[2]戴晓虎.我国城镇污泥处理处置现状及思考[J].给水排水,2012,38(2):1-5.[2]Dai Xiaohu.Our country's urban sludge of processing status and thinking[J].Water Supply and Drainage,2012,38(2):1-5.
[3]何品晶,顾国维,李笃中.城市污泥处理与利用[M].北京:科学出版社,2003.300-308.[3]He Pinjing,Gu Guowei,Li Duzhong.Urban Sludge of Treatment and Utilization[M].Beijing:Science Press,2003.300-308.
[4]金正宇,张国臣,王凯军.热解技术资源化处理城市污泥的研究进展[J].化工进展,2012,31(1):1-9.[4]Jin Zhengyu,Zhang Guochen,Wang Kai jun.Research advance in resource recovery treatment of sewage sludge by pyrolysis[J].Chemical Industry and Engineering Progress,2012,31(1):1-9.
[5]李刚,王格格,陆江银,等.不同热解因素对污泥热解生成气相产物的影响[J].现代化工,2016,36(3):71-74.[5]Li Gang,Wang Gege,Lu Jiangyin,et al.Effect of different pyrolysis factors on gas phase products generated from sludge pyrolysis[J].Modern Chemical Industry,2016,36(3):71-74.
[6]李海英,张书廷,赵新华,等.城市污水污泥热解实验及产物特性[J].天津大学学报,2006,39(6):739-744.[6]Li Haiying,Zhang Shuting,Zhao Xinhua,et al.Pyrolysis experiment of municipal sewage sludge and characteristics of fractions[J].Journal of Tianjin University,2006,39(6):739-744.
[7]尹龙晓,周兴求,伍健东,等.污泥与秸秆掺烧的燃烧特性研究及应用[J].可再生能源,2013,31(1):71-75.[7]Yin Longxiao,Zhou Xingqiu,Wu Jiandong,et al.The combustion characteristics and application of sludge mixed with straw[J].Renewable Energy Resources,2013,31(1):71-75.
[8]Demirbas A,Arin G.An overview of biomass pyrolysis[J].Energy Sources,2002,24(5):471-482.
[9]Bernhard P.Prediction of pyrolysis of pistachio shells based on its components hemicellulose,cellulose and lignin[J].Fuel Processing Technology,2011,92(10):1993-1998.
[10]姚锡文,许开立,闫放,等.花生壳的热重-质谱分析及其反应动力学[J].东北大学学报(自然科学版),2015,36(12):1761-1765.[10]Yao Xiwen,Xu Kaili,Yan Fang,et al.Thermogravimetricmass spectrometry analysis and pyrolysis kinetic of peanut shell[J].Journal of Northeastern University(Natural Science),2015,36(12):1761-1765.
[11]焦李.脱水污泥/生物质共热解特性研究[D].武汉:华中科技大学,2013.[11]Jiao Li.Study of the co-pyrolysis of dewatered sewage sludge and biomass[D].Wuhan:Huazhong University of Science and Technology,2013.
[12]张艳丽,肖波,胡智泉,等.污泥热解残渣水蒸气气化制取富氢燃气[J].可再生能源,2012,30(1):67-71.[12]Zhang Yanli,Xiao Bo,Hu Zhiquan,et al.Preparation of hydrogen-rich gas from steam gasification of sludge pyrolysis residues[J].Renewable Energy Resources,2012,30(1):67-71.
[13]王志远,徐宏,栾小建,等.Si O2/S涂层与乙酸钾抗结焦性能的对比[J].石油学报(石油加工),2012,28(1):149-154.[13]Wang Zhiyuan,Xu Hong,Luan Xiaojian,et al.Comparision between the anti-coking properties of Si O2/S coating and potassium acetate[J].Acta Petrolei Sinica(Petroleum Processing Section),2012,28(1):149-154.
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