CIOT washers
CIOT class washers are direct-flow wet dust collectors for medium cleaning of dusty air of exhaust ventilation complexes from dust of various types, excluding contamination of cementing nature and fibrous structure.
Marking of CIOT class washer
Example of designation - «CIOT - 5», where:
- «CIOT» - developer - Sverdlovsk Institute of Labor Protection;
- «5» - washer number.
Design advantages
The CIOT class washer differs from the CVP class cyclones with a wet film in that the process of trapping dust contaminants includes not only their deposition on the wet walls of the washer due to the action of centrifugal forces, but also the cleaning of contaminated air by irrigating it with sprayed water.
Design features of the CIOT class washer:
- increasing the angle of inclination of the bottom part for more effective sludge removal;
- improving the distribution of the supplied water along the walls;
- simplifying the design of the spinner.
CIOT class washers come in three types:
- type I - the presence of a spinner to add flow coming from unit, a certain direction: vertically downwards;
- type II - presence of a "snail" type spinner;
- type III - absence of a spinner - air discharge vertically upwards.
The CIOT class washer is a housing with an inlet pipe and a spinner (except for the third type design). The inlet pipe is equipped with an inspection hatch for maintenance and inspection. There are also two holes here. The first is for controlling the movement of water when adjusting the unit's operating mode, the second is for lighting.
The capacity of CIOT class washer models varies from 2100 to 210,000 m3/h, the diameter of the cylindrical part is 750 ÷ 5722 millimeters, height - 1441 ÷ 8985 millimeters, weight - 100 ÷ 8700 kilograms. The optimum inlet velocity of the contaminated flow in the washer of the considered class is 15-21 m/s. At these speeds, the level of cleaning is approximately the same. The efficiency of separation of mineral wettable dust, where the content of particles up to ten microns is 55% -60%, reaches 95%. If the velocity drops below 14 m/s, water is not sprayed by the air flow, which leads to a decrease in cleaning efficiency.
Operating principle
The operating principle is spraying water inside the dust collector. In the CIOT class washer, dust from the air flow settles on the inner wet surface of the unit walls under the influence of inertial forces, and is also captured by the water sprayed by the air flow, directed downwards. Water is supplied to the unit through the inlet pipe and into the bottom of the water distributor located at the top of the unit. To stabilize the water pressure that washes the air, the washer is equipped with a water tank with a ball valve.
Advantages
- water saving;
- high level of cleaning;
- simplified design of the twister.
Field of application
The CIOT class washer is widely in demand where it is necessary to effectively clean the air from dust that is easily wetted by water without further physical changes.
Features of operation
Due to the fact that the main working element of CIOT class washers is water, these units effectively capture dusty hydrophilic contaminants. It is worth remembering that the presence of foreign impurities in the cleaned air (for example, fiber, cement), capable of forming solid conglomerates with water, coagulated, sharply reduces the efficiency of such an aggregate, therefore its use in such conditions is not recommended. In the presence of contaminants of this kind and a significant initial dust content, there is a risk of disruption of the washer's functioning due to the fact that sufficiently thick sludge will clog either the aggregate itself or the outlet pipes. This equipment should also not be used for cleaning from dust that can dissolve in it with the formation of difficult-to-retain particles. Additional dilution of sludge with water deprives the CIOT class washer of its main advantage - water saving. CIOT class washers should be installed on suction.
