Study on Ash Particle Distribution Characteristics of Candle Filter Surface Regeneration at Room Temperature.

Vasudevan, V. ; Kang, B. S. ; Johnson, E. K.

Technical Information Center Oak Ridge Tennessee

关键词: Filters;    Hot gas cleanup;    Fossil-fueled power plants;    Air pollution control;    Ceramics;   

RP-ID  :  DE2005835885

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Ceramic barrier filtration is a leading technology employed in hot gas filtration. Hot gases loaded with ash particle flow through the ceramic candle filters and deposit ash on their outer surface. The deposited ash is periodically removed using back pulse cleaning jet, known as surface regeneration. The cleaning done by this technique still leaves some residual ash on the filter surface, which over a period of time sinters, forms a solid cake and leads to mechanical failure of the candle filter. A room temperature testing facility (RTTF) was built to gain more insight into the surface regeneration process before testing commenced at high temperature. RTTF was instrumented to obtain pressure histories during the surface regeneration process and a high-resolution high-speed imaging system was integrated in order to obtain pictures of the surface regeneration process. The objective of this research has been to utilize the RTTF to study the surface regeneration process at the convenience of room temperature conditions.