Velocity measurements in PFBC cyclone separator systems dip legs with thermal anemometry

Conference · Thu Jul 01 04:00:00 EDT 1999

OSTI ID:20006741

Romeo, L M; Velilla, J

In order to improve the operational behavior (efficiency and stability) of the cyclone separator system in Escatron PFBC power plant, a laboratory-scale cold model has been built. Scaling laws have been applied to simulate the hydrodynamics and performance of the systems, in order to obtain valuable and relevant results for commercial PFBC technology. It has been demonstrated that the filtration effect of the cyclones in a PFBC power plant is extended down to the dipleg. Previous studies in a laboratory-scale cold model have pointed out the importance of the vortex inside the dipleg and its influence in the separation efficiency. It is due to the fact that the cyclone effect is still active in the dipleg. These studies are based in pressure drop dipleg measurements. Thermal anemometry has been used to measure the gas velocity and turbulence of several installations. In this case it has been used in order to check the vortex activity in the upper section of the dipleg of a cyclone separator system for a PFBC power plant. This paper deals with the results and conclusions of the research about the velocity field inside the dipleg. The possibility of improving cyclone efficiency by means of extending the vortex, the study of the variables affecting the vortex (and also the cyclone efficiency) and the establishment of a flow-pattern in the dipleg are the main objectives of the research and the paper.

• Research Organization: Centro Politecnico Superior, Zaragoza (ES)
• OSTI ID: 20006741
• Report Number(s): CONF-990534--
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
CYCLONE SEPARATORS
DEASHING
EXHAUST GASES
FLOW MODELS
FLUIDIZED-BED COMBUSTORS
FOSSIL-FUEL POWER PLANTS
GAS FLOW
HYDRODYNAMICS
PERFORMANCE
PRESSURIZATION