SU1674920A1 - Device for cleaning gases and air - Google Patents

Abstract

The invention relates to the field of dust cleaning of air gases and can be used in the petrochemical, gas processing, rubber and other industries. Its use will reduce the energy consumption for the rotation of the filter drum. In the gas and air purification device, the aerosol inlet connection is installed tangentially to the filter drum over its upper part so that the direction of the incoming flow of aerosol coincides with the direction of rotation of the filter drum in the zone of their contact. 2 Il.

Description

The invention relates to the cleaning of gases and air from dust and can be used in the petrochemical / aroprocessing, rubber and other industries.

The aim of the invention is to reduce the energy consumption for rotating the filter drum: FIG. 1 shows a filter, a longitudinal section; in fig. 2 shows section A-A in FIG. one.

The filter includes a housing 1 with a rotating filtering drum 2 placed inside it and a collector 3 for blowing back the filtering corrugated surface of the drum. The collector 3 is located above the receiving hopper 4 of the dispersed phase and the device 5 (auger) dp moving it out of the housing

filter. The aerosol inlet 6 is located in the upper part of the body tangentially with respect to the filter drum, the direction of the incoming aerosol flow coinciding with the direction of rotation of the drum at the point of contact of the aerosol stream with the filter surface. A nozzle 7 for removing the dust-free gas is located on one of the end walls of the filter housing opposite to the place of entry into the filter drum housing. Seals 8 and 9 are installed to seal the filter between filter drum 2 and housing 1. Rotation of drum 2 is performed by an adjustable electric drive 10.

The filter works as follows.

The dusty stream enters the inside of the housing 1 through the inlet pipe 6 through

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 mouse flows on i ofirovanovnuk / PPG-phnost filter drum 2

The dispersed phase is deposited on the surface of the filter drum 2, forming an additional filter layer. The purified gas (air) is filtered through the surface of the drum and the branch pipe 7 is removed from the drum to remove dust-free gas (air).

Removal of the dispersed phase from the filtering surface of the rotating drum, moving the layer of the dispersed phase with a real / 1 meter compressed dedusted gas (in spirit) through the reverse purge collector 3

Peeling of the dispersed phase from the filter pushes through the hopper 4 under the action of three forces of pressure of the gas stream that coincide with the sign of the reverse purge of the test power and gravity forces. The dispersed phase enters the bunker 4 and the device 5 (for example, a screw) outputs from the filter casing, the backwash gas stating a layer of dust is filtered through the surface of the drum 2, mixed with the dust-free gas stream and discharged through the nozzle 7, which is connected to the dust-free gas extraction line

Depending on the performance of the filter and the resistance of the filtering surface, the minimum rotational speed of the drum can be set (adjusted) by varying the rotational speed of the regulating electric drive 10 The change in the gas flow rate (air) of the reverse filter purge is made by the regulator c, zpspl (not shown)

The tangential placement of the inlet pipe 6 with respect to the filter drum 2 and the coincidence of the direction of the incoming flow of aerosol with the direction of rotation of the drum 2 in the zone of contact of the jet of aerosol with the surface of the drum allows you to use the kinetic energy of the incoming stream to prevent the deposition of the dispersed phase on the walls of the body due to eliminate stagnant zones and reduce energy costs for rotating the filter drum

When the flow rate of dusty gas increases, its speed increases, and with constant resistance on the shaft, the rotational speed of the filter drum increases. When the flow rate of the filtered flow decreases, the drum rotation speed decreases, and the drum speed automatically adjusts.

Thus, the invention allows

use the energy of the incoming stream of dusty gas (air) to overcome the inertial forces arising from an increase in filter performance and a corresponding increase in speed

rotation of the filter drum, and thereby reduce the power of the drum electric drive and energy costs for its rotation

Auto speed control

filtering drum, due to the use of the energy of the incoming aerosol flow, allows providing a virtually constant filtration rate (load on the filtering surface) and efficiently filtering the dusty stream in the whole range of filter performance and thereby avoiding the use of the second internal drum

In addition, due to autoregulation

drum rotation speed can be greatly simplified and cheaper system of automatic control of the filter operation in case of refusal to use the unit

sensors, transducers, secondary devices and regulators, re (determining the rotational speed of the filter drums depending on the flow rate of the dusty flow,

Claims (1)

Invention Formula A filter for the purification of gases and air, comprising a housing with nozzles for supplying an aerosol and a purge of purified gas, a rotatable drum with a corrugated filtering surface, a collector pipe for reverse blowing and devices for collecting, removing the dispersed phase and moving the drum, characterized in that in order to reduce energy consumption for the rotation of the filter drum, the spout supply pipe is set tangentially to the drum its upper part, while the direction of rotation of the drum coincides with the direction of the incoming flow   cL ± 3 ed H X FIG. 2