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The first experimental task was to check the feasibility of a fluidized lime bed suspended in a tall column. This was the simplest model that could be used as a lime feeder. The aim was to find the optimum upflow velocity that would mix the lime uniformly and keep it suspended without causing a great amount of undissolved lime to go out with the effluent. Upflow velocity can be calculated by dividing the flow rate by the cross sectional area of the column. Since the area is constant, upflow velocity is directly proportional to the flow rate. The equation of up flow velocity is shown below.

{latex}
\large
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$$
V_{upflow} *As_{top}  = Q_{\lim efeeder}
$$

{latex}

Vup flow: Velocity of the inlet flow.
As top: Superficial area at the top of the tube.
Qlime feeder: Flow rate employed on the experiment.
The aim of this experiment was to ascertain a range of upflow velocities to maintain a fluidized bed of lime. This was an initial experiment and hence most of the quantities were taken through approximation.

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