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Gravity Dust Collector
The dust removal principle of gravity dust collector is to suddenly reduce the airflow velocity and change the flow direction, the larger particles of dust under the action of gravity and inertia force, separated from the gas, settling to the bottom part of the dust collector cone. It belongs to coarse dust removal.
Features
The dust removal principle of gravity dust collector is to suddenly reduce the airflow velocity and change the flow direction, the larger particles of dust under the action of gravity and inertia force, separated from the gas, settling to the bottom part of the dust collector cone. It belongs to coarse dust removal. The upper part of the gravity dust collector is equipped with a blocking valve, and the electric winch is opened, and the lower part of the gravity dust collector is equipped with a dust discharging device.
Gravity dust collector is the equipment to separate the dust from the gas with the help of gravity settling of the dust. The process of dust settling by gravity is that the flue gas enters the gravity settling equipment from the horizontal direction, and under the action of gravity, the dust particles gradually settle down, and the gas continues to move along the horizontal direction, so as to achieve the purpose of dust removal.
Set the horizontal flow rate of the gas is V flat, the diameter of d dust particles from the height of h at the beginning of the settlement, the settlement speed is V drop, then the dust particles fall to the horizontal distance l at the time, then the settlement speed and the ratio of the horizontal speed of the gas can be expressed in the following formula: V drop / V flat = h / l
In the gravity dust removal equipment, the lower the speed of gas flow, the more the use of settling fine dust, the more conducive to improving the dust removal efficiency. Therefore, the general control of gas flow rate of 1-2m / s, dust removal efficiency of 40% to 60%. If the speed is too low, the equipment is relatively large, high investment costs, is not desirable. In the case of gas flow rate is basically fixed, the longer the gravity dust collector design, the more conducive to improving the dust removal efficiency, but usually should not exceed 10m long.
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