DING Kaili;HU Chen;DENG Xianhe;

• 1:School of Chemistry and Chemical Engineering
• 2:South China University of Technology

Abstract：

In order to investigate the heat transport characteristics of activated coke particles in moving bed,heat transfer experiment has been conducted,using tube and shell heat exchanger as the main process. Heated air and activated coke particles showed in a countercurrent flow mode in the heat exchanger. According to variable-controlling approach,the temperature difference ΔT_mand heat load Q caused by heat transfer,total heat transfer coefficient K of different experimental conditions,such as different wind speedu_s,the outlet temperature of hot air when the activated coke particles began to unload T_(air)and speed of unloaded activated coke particles v_pwere determined. The results indicated thatu_smade a big difference on ΔT_m,and the greateru_s,the bigger Q and K,closely related to the power ofu_swith n =0. 64. With theu_sreaching to 16 m / s,v_pbecoming 150 kg / h and T_(air)turning into 40 ℃,the total heat transfer coefficient highly reached to 9. 32 W /( m~2·K). With the rising T_(air),There was no obvious change in ΔT_m,a smaller value in Q and K,when negligible variation in K ranged from 70 ℃ to 80 ℃. Moreover,as v_pincreased,ΔT_mslowly increased,at the same time Q and K increased linearly. Higher than7. 5 W /( m~2·K),K increased linearly by 0. 9 W/( m~2·K) with each 50 kg/h rises,which displayed an observable effect on totality.

Key Words： activated coke particles;tube and shell heat exchanger;moving bed;total heat transfer coefficient;unloading speed

Abstract:

Keywords:

Foundation: 广东省重大科技专项资助项目(2011A080804012)

Authors: DING Kaili;HU Chen;DENG Xianhe;

DOI: 10.13226/j.issn.1006-6772.2016.01.010

References：

• [1]郝吉明,王书恩,陆永琪.燃煤二氧化硫污染控制技术手册[M].北京:化学工业出版社,2001:359-363.Hao Jiming,Wang Shuen,Lu Yongqi.Manual of SO2pollution control in coal fired[M].Beijing:Chemical Industry Press,2001:359-363.
• [2]邢连中.应用国家政策推动火电厂烟气脱硫工作的全面实施[J].华东电力,2004,32(6):11-13.Xing Lianzhong.Promote full-scale implement of FGD environmental protection in power plants utilizing national fiscal policy[J].East China Electric Power,2004,32(6):11-13.
• [3]李艳芳.活性焦烟气联合脱硫脱硝技术[J].煤质技术,2009(1):36-39.Li Yanfang.Technology of simultaneous desulphurization and denitration using activity coke[J].Coal Quality Technology,2009(1):36-39.
• [4]张会平,钟辉,叶李艺.不同化学方法再生活性炭的对比研究[J].化工进展,1999,18(5):31-35.Zhang Huiping,Zhong Hui,Ye Liyi.The comparisons for regeneration of activated carbon by different chemical regeneration methods[J].Technology Progress,1999,18(5):31-35.
• [5]陈皓,向阳,赵建夫.超临界二氧化碳萃取再生活性炭技术研究进展[J].上海环境科学,1997,16(12):26-28.Chen Hao,Xiang Yang,Zhao Jianfu.Progress on regeneration of activated carbon by supercritical carbon dioxide extraction[J].Shanghai Environmental Sciences,1997,16(12):26-28.
• [6]傅大放,邹宗柏,曹鹏.活性炭的微波辐照再生试[J].中国给水排水,1997,13(5):7-9.Fu Dafang,Zou Zongbo,Cao Peng.A study on regeneration of activated carbon by means of microwave irradiation[J].China Water and Wastewater,1997,13(5):7-9.
• [7]张会平,叶李艺,傅志鸿,等.活性炭的电化学再生技术研究[J].化工进展,2001,20(10):17-20.Zhang Huiping,Ye Liyi,Fu Zhihong,et al.Regeneration of spent activated carbon by electrochemical method[J].Technology Progress,2001,20(10):17-20.
• [8]刘安源,刘石.流化床内颗粒碰撞传热的理论研究[J].中国电机工程学报,2003,23(3):161-165.Liu Anyuan,Liu Shi.Theoretical study on impact heat transfer between particles in fluidized bed[J].Progress of the Chinese Society for Electrical Engineering,2003,23(3):161-165.
• [9]武锦涛,陈纪忠,阳永荣.移动床中颗粒接触传热的数学模型[J].化工学报,2006,57(4):719-725.Wu Jintao,Chen Jizhong,Yang Yongrong.Model of contact heat transfer in granular moving bed[J].Journal of Chemistry Industry and Engineering(China),2006,57(4):719-725.
• [10]武锦涛.移动床中固体颗粒运动与传热的研究[D].杭州:浙江大学,2005:103-116.Wu Jintao.Research on motion and heat transfer in granular moving bed[D].Hangzhou:Zhejiang University,2005:103-116.
• [11]卜昌盛,陈晓平,刘道银,等.基于颗粒尺度的离散颗粒传热模型[J].化工学报,2012,63(3):698-704.Bu Changsheng,Chen Xiaoping,Liu Daoyin,et al.Heat transfer model for particles with discrete element method[J].Journal of Chemistry Industry and Engineering(China),2012,63(3):698-704.
• [12]朱立平,袁竹林,闫亚明,等.基于离散单元法的丝状颗粒传热数学模型[J].化工学报,2012,63(7):2051-2058.Zhu Liping,Yuan Zhulin,Yan Yaming,et al.Model of heat transfer in filamentous granular materials based on discrete element method[J].Journal of Chemistry Industry and Engineering(China),2012,63(7):2051-2058.
• [13]傅巍.移动床内颗粒物料流动的数值模拟与实验研究[M].沈阳:东北大学,2006:1-62.Fu Wei.Simulation and experiments of particles flow in moving beds[M].Shenyang:Northeastern University,2006:1-62.
• [14]Wen C Y,Chang T M.Particle to particle heat transfer in air fluidized beds[C]//Proceedings of International Symposium on Fluidization.Eindhoven:[s.n.].1967:491-506.
• [15]Sun J,Chen M M.A theoretical analysis of heat transfer due to particle impact[J].International Journal of Heat and Mass Transfer,1988,31(5):969-975.
• [16]罗贤艺,何文军,徐佩若,等.醋酸乙烯合成环柱状催化剂固定床传热参数[J].华东理工大学学报,2000,26(3):240-243.Luo Xianyi,He Wenjun,Xu Peiruo,et al.Heat transfer parameters of fixed bed of hollow cylindrical catalyst for ethylene acetoxidation to vinyl acetate reaction[J].Journal of East China University of Science and Technology,2000,26(3):240-243.
• [17]吴建民,张海涛,应卫勇,等.钴基催化剂固定床有效导热系数[J].过程工程学报,2010,10(1):29-34.Wu Jianmin,Zhang Haitao,Ying Weiyong,et al.Effective thermal conductivity of fixed packing bed of cobalt-based catalyst[J].The Chinese Journal of Progress Engineering,2010,10(1):29-34.
• [18]刘玉兰,吴勇强,朱子彬.固定床冷却的错流传热[J].化学反应工程与工艺,2004,20(3):260-264.Liu Yulan,Wu Yongqiang,Zhu Zibin.Cross flow heat transfer in acooled fixed bed[J].Chemical Reaction Engineering and Technology,2004,20(3):260-264.
• [19]唐酞峰.管内流体温度对给热系数影响的实验研究[J].攀枝花学院学报,2007,24(6):113-121.Tang Taifeng.The test and study of influence of the fluid temperature inside the tube in heat conveyance coefficient[J].Journal of Panzhihua University,2007,24(6):113-121.
• [20]傅月梅,刘静,唐夕山.活性焦传热系数的测定[J].洁净煤技术,2015,21(2):56-63.Fu Yuemei,Liu Jing,Tang Xishan.Measurement of heat transfer coefficient of activated coke[J].Clean Coal Technology,2015,21(2):56-63.