Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

TEMPERATURE-DEPENDENT DESORPTION CHARACTERISTICS OF METALLIC TIN ON CORUNDUM FILTER BALL SURFACE

Get access (open in a dialog) DOI: 10.1615/IHTC16.mpf.022648
pages 6431-6438

Abstrakt

When high-temperature flue gas containing condensed dust particles is filtered through a particle bed, a filter cake is formed on the surface of the filter material that is initially contacted. The cake initially helps improve the filtration efficiency of the bed. However, with increasing thickness of the cake layer, the increase in the particle bed resistance reduces the dust removal efficiency and the dust holding capacity. ABAQUS was used for simulating the temperature and temperature desorption characteristics of dust on the filter surface to dynamically adjust the thickness of the filter cake and improve the dust holding capacity. The effects of thermal expansion coefficient, adhesion surface shape, filter material, and dust temperature on thermal stress were determined. The maximum value of the thermal stress of the filter and the dust is found at the outer edge of the contact between the dust and the filter. The thermal stress decreases gradually along the outer edge of the dust and the filter. The maximum thermal stress is higher than the desorption force measured in the experiment. The temperature of the filter can be modified through filter surface desorption to dynamically adjust the thickness of the filter cake during filter layer formation.