刘润哲,朱诗杰,钟欣,孟德喜,陆海峰,陈雪莉

• 1:华东理工大学煤气化及能源化工教育部重点实验室

摘要(Abstract)：

为获得细颗粒在水蒸气冷凝过程中的长大规律,借助自行搭建的细颗粒生长管实验平台,研究了不同过饱和度、细颗粒长大时间、初始数浓度和初始粒径分布对不同润湿性细颗粒在蒸汽冷凝相变过程中长大特性的影响。结果表明:过饱和度和颗粒长大时间对不同润湿性细颗粒尤其是亲水性颗粒的长大影响显著;当过饱和度和颗粒长大时间相同时,初始粒径分布相近的颗粒长大率均随其接触角的增大而减小,并且亲水性颗粒长大率的减小趋势更显著。亲水性细颗粒初始数浓度的增加不利于蒸汽在细颗粒表面凝结;亲水性细颗粒初始粒径越小,长大效果越好,当过饱和度为1.49、长大时间为1 s时,长大率可以达到144%。

关键词(KeyWords)： 细颗粒;饱和蒸汽;异相凝结;过饱和度;润湿性;长大特性

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2017YFB0602601);; 中央高校基本科研业务费专项资金(222201718003)

作者(Author): 刘润哲,朱诗杰,钟欣,孟德喜,陆海峰,陈雪莉

参考文献(References)：

• [1]吕建燚,李定凯.可吸入颗粒物研究现状及发展综述[J].环境保护科学,2005(2):5-8.LU J Y,LI D K.Review of study on inhalable particulate matter[J].Journal of Environmental Protection Science,2005(2):5-8.
• [2]荔军.干式除尘与湿式除尘优缺点分析[J].煤矿机械,2017,38(3):4-5.LI J.Analysis of advantage and disadvantage between dry dusting and wet dusting[J].Coal Mine Machinery,2017,38(3):4-5.
• [3]吴忠标.大气污染控制工程[M].北京:科学出版社,2002.WU Z B.Air pollution control project[M].Beijing:Science Press,2002.
• [4]JI J H,HWANG J,BAE G N,et al.Particle charging and agglomeration in DC and AC electric fields[J].Journal of Electrostatics,2004,61(1):57-68.
• [5]颜金培,陈立奇,杨林军.燃煤细颗粒在过饱和氛围下声波团聚脱除的实验研究[J].化工学报,2014,65(8):3243-3249.YAN J P,CHEN L Q,YANG L J.Agglomeration removal of fine particles at super-saturation steam by using acoustic wave[J].Journal of Chemical Industry and Engineering,2014,65(8):3243-3249.
• [6]刘勇,赵汶,刘瑞,等.化学团聚促进电除尘脱除PM2.5的实验研究[J].化工学报,2014,65(9):3609-3616.LIU Y,ZHAO W,LIU R,et al.Improving removal of PM2.5by electrostatic precipitator with chemical agglomeration[J].CIESCJournal,2014,65(9):3609-3616.
• [7]徐俊超,张军,周璐璐,等.蒸汽凝结促进PM2.5长大的研究现状[J].现代化工,2014,34(3):20-24XU J C,ZHANG J,ZHOU L L,et al.Prospect in vapor condensation for PM2.5abatement[J].Modern Chemical Industry,2014,34(3):20-24
• [8]SCHAUER P J.Removal of submicron aerosol particles from moving gas stream[J].Industrial&Engineering Chemistry,1951,43(7).
• [9]YOSHIDA T,KOUSAKA Y,OKUYAMA K.Growth of aerosol particles by condensation[J].Industrial&Engineering Chemistry Fundamentals,1976,15(1):37-41.
• [10]ANAND S,LEE J Y,VEETTIL D,et al.Distribution of vapor inside a cylindrical minichannel with evaporative walls and its effect on droplet growth by heterogeneous nucleation[J],2016,3(1):011008.
• [11]OKUYAMA K,KOUSAKA Y,MOTOUCHI T.Condensational growth of ultrafine aerosol particles in a new particle size magnifier[J].Aerosol Science and Technology,1984,3(4):353-366.
• [12]JOANNON M D,COZZOLINO G,CAVALIERE A,et al.Heterogeneous nucleation activation in a condensational scrubber for particulate abatement[J].Fuel Processing Technology,2013,107(107):113-118.
• [13]HEIDENREICH S,VOGT U,BUTTNER H,et a1.A novel process to separate submicron particles from gases-A cascade of packed columns[J].Chemical Engineering Science,2000,55(15):2895-2905.
• [14]张霞,杨林军,孙露娟,等.应用蒸汽相变机理脱除燃烧源PM2.5试验研究[J].东南大学学报(自然科学版),2008(1):81-85.ZHANG X,YANG L J,SUN L J,et al.Experimental study on removal of PM2.5from combustion by vapor heterogeneous condensation[J].Journal of Southeast University(Natural Science Edition),2008(1):81-85.
• [15]周璐璐.燃煤细颗粒水汽相变长大特性实验研究[D].南京:东南大学,2015.ZHOU L L.Experimental research on the characteristic of growth by vapor condensation of coal ash particles[D].Nanjing:Southeast University,2015.
• [16]杨林军,颜金培,沈湘林,等.蒸汽相变促进燃烧源PM2.5凝并长大的研究现状及展望[J].现代化工,2005,25(11):22-24.YANG L J,YAN J P,SHEN X L,et al.Status quo and prospects of the research of the coalescence and growth of combustion sources at PM2.5 promoted by the phase change of steam[J].Modern Chemical Industry,2005,25(11):22-24.
• [17]李春红,赵之彬,陈玉清.溶胶-凝胶法制备疏水型SiO2薄膜的研究[J].化工科技,2005,13(5):26-29.LI C H,ZHAO Z B,CHEN Y Q.Research of hydrophobic SiO2 thin film prepared by sol-gel method[J].Science&Technology In Chemical Industry,2005,13(5):26-29.
• [18]HERING S,STOLZENBURG M.A method for particle size amplification by water condensation in a laminar,thermally diffusive flow[J].Aerosol Science&Technology,2005,39(5):428-436.
• [19]HEIDENREICH S,EBERT F.Condensational droplet growth as a preconditioning technique for the separation of submicron particles from gases[J].Chemical Engineering&Processing,1995,34(3):235-244.
• [20]XU J,YU Y,ZHANG J.Heterogeneous condensation on fine particles of water vapor in a moderated growth tube[J].Energy Procedia,2017,118(C):201-209.
• [21]KULMALA M.Condensational growth and evaporation in the transition regime[J].Aerosol Science&Technology,1993,19(3):381-388.