static bed

static bed

[′stad·ik ′bed]
(chemical engineering)
A layer of solids in a process vessel (absorber, catalytic reactor, packed distillation column, or granular filter bed) in which the particles rest upon one another at essentially the settled bulk density of the solids phase; contrasted to moving-solids or fluidized-solids beds.
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List of symbols f frequency of sound(Hz) H static bed height (cm) [increment]P pressure drop across the bed (cm of water) Pressure Drop cm of water [U.
Each four-tank system includes a microscreen rotating drum filter and protein skimmer for removal of solid and suspended wastes, a moving or static bed biofilter for ammonia and nitrite removal, supplemental oxygenation that is monitored and controlled using oxygen sensors and PLCs, micro-bubble aeration diffusers, centrifugal pumps and propeller pumps for water movement, UV sterilizers for return water disinfection, and degassing columns for [CO.
Simplicity and good agreement of the predictions of this model with the experimental results perhaps encouraged subsequent researchers to use static bed models in future.
As shown in Figures 8, spout shapes were similar for different static bed heights.
Topics include the effect of static bed height on the combustion of rice husk in a fluidized bed combustor, alternative bed materials for high alkali fuels, the fouling tendency of ash from burning mixtures of biofuels, and reactivation of CFBC ash by sonic energy.
Unfortunately, vectors are typically the size of a dust particle so that, when placed onto a static bed of target cells, they obey the physical principles of random Brownian motion and do not readily settle or diffuse in solution.
Measurements of the total pressure drop in the spouted bed system as a function of gas velocity were obtained for several static bed heights for both particle diameters.
They also washed cars and held a static bed push helped by nurses from the hospital.
The general motion of powder inside a revolving system can be categorized into three types [2, 3]; avalanche bed flow, steady-state circulating bed flow, and slip-flow, or static bed flow.
Convection in the fluid flowing through the static bed.
For a particular composition of the mixture, the initial static bed height and the superficial velocity of the fluidizing medium have been altered four times.
They will replace the existing stock of static beds, which are more than 30 years old and due for the scrap-heap.