Deposit formation on a single cylinder during combustion of herbaceous biomass

作者: H Kaufmann , Th Nussbaumer , L Baxter , N Yang

DOI: 10.1016/S0016-2361(99)00137-4

关键词: Combustion chamberFlue gasMineralogyCombustionThermophoresisParticle sizeAerosolChemistryBoiler (power generation)Fly ash

摘要: Abstract The combustion of herbaceous biomass can lead to deposit formation on the walls chamber and boiler tubes. These deposits are being caused by fly ash. aim present investigation was identify mechanisms formation, analyse chemical morphological properties deposit, propose measures for reduction. Special attention given from flue gas having been cleaned large particles. It is typically found in boilers moving bed furnaces. Experiments were performed a turbulent flow reactor sampling depositions cooled cylinder after removed particles an obstacle. Furthermore, two furnaces collected. investigations show that similar those achieved when before sampling. identified as accumulations fine nanometer range. KCl, major compound deposit. Among different thermophoresis revealed be crucial process under investigated conditions.

参考文章(10)
Herbert F. Kraemer, H. F. Johnstone, Collection of Aerosol Particles in Presence of Electrostatic Fields Industrial & Engineering Chemistry. ,vol. 47, pp. 2426- 2434 ,(1955) , 10.1021/IE50552A020
Kurt A. Christensen, Hans Livbjerg, Formation of submicron particles from the combustion of straw Journal of Aerosol Science. ,vol. 26, pp. 691- ,(1995) , 10.1016/0021-8502(95)90180-9
Larry L. Baxter, Ash deposition during biomass and coal combustion: A mechanistic approach Biomass & Bioenergy. ,vol. 4, pp. 85- 102 ,(1993) , 10.1016/0961-9534(93)90031-X
L. Talbot, R. K. Cheng, R. W. Schefer, D. R. Willis, THERMOPHORESIS OF PARTICLES IN A HEATED BOUNDARY LAYER Journal of Fluid Mechanics. ,vol. 101, pp. 737- 758 ,(1980) , 10.1017/S0022112080001905
Irving Langmuir, Katherine. Blodgett, mathematical investigation of water droplet trajectories Distributed by Office of the Publication Board, Dept. of Commerce. ,(1946)
Thomas R Miles, Thomas R Miles Jr, Richard W Bryers, Larry L Baxter, Bryan M Jenkins, Laurance L Oden, Alkalis in alternative biofuels American Society of Mechanical Engineers, New York, NY (United States). ,(1994)
Irving Langmuir, Katherine Blodgett, A mathematical investigation of water droplet trajectories ,(1946)