Effect of condensable species on particulate fouling

K.K. Sathyanarayanarao Subbarao, C.C.M. Rindt, A.A. Steenhoven, van

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

94 Downloads (Pure)

Samenvatting

The flue gases emanating from the combustion of fuels or gasification process invariably comprises particulate matter and many chemical species in vapor form. The temperature of the flue gases gradually reduces when passing through different sections of heat exchanger like superheater, evaporator etc. If the temperature of the heat exchanger tube surface and the gas phase are favorable for condensation, the chemical species in the vapor form will condense on the particles and on the tube surface. The particle deposition behavior under these conditions is drastically different from the one observed in dry particulate fouling. In order to model the particle deposition under such circumstances, it is important to evaluate the criteria for particle adhesion to the surface. Impaction experiments of particles impacting a surface coated with a thin liquid film and particles which are coated with a liquid film impacting over a dry surface are performed to evaluate the limiting parameters under which a particle sticks to the surface without rebounding. The effects of liquid viscosity, liquid film thickness and interacting material properties are evaluated. The experimental results are compared to the results of existing models and a simple modeling approach for fouling is proposed. Controlled fouling experiments are performed for varying liquid films coated over a deposition tube under various process conditions to mimic the condensation effects on fouling. The results are compared with the detailed impaction experiments.
Originele taal-2Engels
TitelProceedings of the International Conference on Heat Exchanger Fouling and Cleaning, 5-10 June 2011, Crete Island, Greece
RedacteurenM.R. Malayeri, H. Muller-Steinhagen, A.P. Watkinson
Pagina's201-209
StatusGepubliceerd - 2011
Evenementconference; International Conference on Heat Exchanger Fouling and Cleaning IX; 2011-06-05; 2011-06-10 -
Duur: 5 jun 201110 jun 2011

Congres

Congresconference; International Conference on Heat Exchanger Fouling and Cleaning IX; 2011-06-05; 2011-06-10
Periode5/06/1110/06/11
AnderInternational Conference on Heat Exchanger Fouling and Cleaning IX

Vingerafdruk Duik in de onderzoeksthema's van 'Effect of condensable species on particulate fouling'. Samen vormen ze een unieke vingerafdruk.

  • Citeer dit

    Sathyanarayanarao Subbarao, K. K., Rindt, C. C. M., & Steenhoven, van, A. A. (2011). Effect of condensable species on particulate fouling. In M. R. Malayeri, H. Muller-Steinhagen, & A. P. Watkinson (editors), Proceedings of the International Conference on Heat Exchanger Fouling and Cleaning, 5-10 June 2011, Crete Island, Greece (blz. 201-209)