A HIGH TEMPERATURE TEST FACILITY FOR STUDYING ASH PARTICLE CHARACTERISTICS OF CANDLE FILTER DURING SURFACE REGENERATION

Conference · Thu Sep 19 04:00:00 EDT 2002

OSTI ID:835884

Kang, B S-J; Johnson, E K; Rincon, J

Hot gas particulate filtration is a basic component in advanced power generation systems such as Integrated Gasification Combined Cycle (IGCC) and Pressurized Fluidized Bed Combustion (PFBC). These systems require effective particulate removal to protect the downstream gas turbine and also to meet environmental emission requirements. The ceramic barrier filter is one of the options for hot gas filtration. Hot gases flow through ceramic candle filters leaving ash deposited on the outer surface of the filter. A process known as surface regeneration removes the deposited ash periodically by using a high pressure back pulse cleaning jet. After this cleaning process has been done there may be some residual ash on the filter surface. This residual ash may grow and this may lead to mechanical failure of the filter. A High Temperature Test Facility (HTTF) was built to investigate the ash characteristics during surface regeneration at high temperatures. The system is capable of conducting surface regeneration tests of a single candle filter at temperatures up to 1500 F. Details of the HTTF apparatus as well as some preliminary test results are presented in this paper. In order to obtain sequential digital images of ash particle distribution during the surface regeneration process, a high resolution, high speed image acquisition system was integrated into the HTTF system. The regeneration pressure and the transient pressure difference between the inside of the candle filter and the chamber during regeneration were measured using a high speed PC data acquisition system. The control variables for the high temperature regeneration tests were (1) face velocity, (2) pressure of the back pulse, and (3) cyclic ash built-up time.

• Research Organization: West Virginia University (US)
• Sponsoring Organization: USDOE Office of Fossil Energy (FE) (US)
• DOE Contract Number: FC26-99FT40203
• OSTI ID: 835884
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
CANDLE FILTER
CERAMICS
CLEANING
COMBINED CYCLES
DATA ACQUISITION SYSTEMS
FILTER SURFACE REGENERATION
FILTRATION
FLUIDIZED-BED COMBUSTION
GAS TURBINES
GASES
GASIFICATION
HOT GAS FILTRATION
PARTICULATES
POWER GENERATION
REGENERATION
RESOLUTION
TRANSIENTS
VELOCITY