SU1064987A2 - Vortex dust collector for cleaning dust-laden gases - Google Patents

Abstract

1. VORTEX DUST COLLECTOR FOR CLEANING DUSTED GASES at author. St. 731993, characterized in that, in order to increase the efficiency of dust collection, the dust collector is equipped with a cone with a cylindrical tube attached to it, mounted on the washer. 2. Dust collector according to claim 1, characterized in that the pipe diameter is determined from the ratio. . where d is the diameter of the pipe, D is the diameter of the dust catcher case.

Description

The invention relates to devices for the dry cleaning of dusty gases and can be used in the chemical, metallurgical, energy, and other industries.

According to the main author. St. No. 731993 a dust collector is known that contains a cylindrical body with a conical base, a cyclone coaxially mounted in i oTopoM; connected to the dust-inlet gas inlet pipe; a secondary gas inlet pipe is installed above the cyclone;

The disadvantage of this dust collector is that the dusty gas introduced into the cyclone moves at a constantly decreasing speed. This leads to a decrease in centrifugal forces and, consequently, to a decrease in the efficiency of dust collection.

The purpose of the invention is to increase the efficiency of dust collection.

The goal is achieved by the fact that a dust collector containing a cylindrical body with a conical base, in which a cyclone is mounted coaxially, connected to a dusty gases inlet, with a secondary gas inlet located above the cyclone, and a fender plate is located under the cyclone a cone with a cylindrical tube attached to it, mounted on the washer.

The diameter of the pipe is determined from the ratio

Ua 7

where "is the diameter of the pipe;

Da is the diameter of the dust collector case.

FIG. 1 schematically shows the proposed dust collector with “concentrated input of the secondary flow; in fig. 2 - dust collector with “distributed input of the secondary flow.

The dust collector includes a housing 1, in which a cyclone 2 is disposed, having a nozzle 3 of the inlet. A branch pipe 4 for introducing a secondary stream is located above the cyclone, and a shut-off washer 5 with an axial movement mechanism 6 is installed below the cyclone. A cone 7 is mounted on the washer, the vertical extension of which is the pipe 8, which does not have a diametrical displacement from the axis of the apparatus due to the presence of a ring 9 located on the nozzle 10 of the clean gas outlet.

Dust collector works as follows.

Dusty gas in two streams (primary and secondary) is introduced through the corresponding nozzles into the apparatus. The primary stream is introduced tangentially into the cyclone 2 through the inlet 3. The secondary gas flow is introduced tangentially into the upper part of the body through the nozzle 4. The primary flow moves to the exit from the cyclone, where there is an end slot 6, having an axial movement mechanism 6. In this case, the gas passes through a constantly decreasing cross section of the channel between the wall of the cyclone and the surface of the cone 7.

When reaching the breaker washer, dust particles enter the gap, controlled by the axial movement mechanism, and the cleaned gas is directed upwards along the surface of the cone, leaves through the hole in the cyclone lid and continues upward movement, twisting along pipe 8. In this way, it meets in the same direction by the secondary gas stream. Dust separation occurs at the interface of two opposing streams. The cleaned gas leaves the apparatus through the nozzle 10. A ring 9 attached to the nozzle 10 prevents the tube from moving away from the axis of the apparatus.

In order to reduce the weight of the apparatus itself and for convenience, the propellant (cone 7 and tube 8) is made of sheet steel and is hollow inside.

To determine the optimal ratio of the dimensions of the casing and the pipe, experimental studies were carried out, which showed that the specified dimensions, in the case of using air or water as the working medium, should be chosen from

,

where Da is the diameter of the dust collector case; d is the diameter of the pipe.

Bullet Design 5 Proposed | allows the angular velocity of the gas flow to be kept constant over the entire height of the cyclone. This is ensured by a uniform narrowing of the longitudinal section of the cyclone channel through which the gas flow moves as it approaches the fender, which in turn leads to stabilization of the centrifugal forces acting on the dust particles and contributes to an increase in the efficiency of bullet trapping.

Compared to the base object 1, the proposed dust collector allows for an increase in dust collection efficiency of 1.5-2.5%.

Claims (2)

1. Vortex dust collector for cleaning dusty gases by ed. St. No. 731993, characterized in that, in order to increase the efficiency of dust collection, the dust collector is equipped with a cone with a cylindrical pipe attached to it, mounted on the washer. 2. Dust collector in π. 1, characterized in that the diameter of the pipe is determined from the relation where d is the diameter of the pipe, D * is the diameter of the dust collector body.