The behaviour of L-valves with granular powders

Solid circulation and loop-seal characteristics of a dual circulating fluidized bed: Experiments and CFD simulation

“…(1) and (2) [18,30]. The negative value means the upward flow of U g up to the bubbling fluidized bed, while the positive value indicates the downward flow of U g .…”

Techno‐Economic Comparison of a 7‐MWth Biomass Chemical Looping Gasification Unit with Conventional Systems

“…The solid circulation rate between gasifier and oxidizer is controlled by a pneumatic L-valve as it is simple to design, easy to operate and to maintain, and performs efficiently in solid flow control. Solid flow can be adjusted by varying the gas flow rate in the horizontal section of the L-valve for Geldart group B particles [22]. The solid circulation rate imposes the particle velocity in the oxidizer by: …”

Hydrodynamics of Dual Fluidized Beds

“…This correlation has been used in the present study because the input operating parameters match with those of (Geldart & Jones, 1991). They carried out measurements of valve pressure drops between the aeration and the solids discharge taking silica sand materials with diameters 68-341 µm with density 2550 kg/m 3 and showed that the values estimated by eqn.…”