RU2256488C1 - Droplet separator - Google Patents

Abstract

FIELD: separating dispersed particles from gases or vapors.

SUBSTANCE: separator comprises housing with inlet, outlet, and drain branch pipes, perforated cylindrical sleeve mounted inside the housing and provided with a trancated housing at its top section, separation chamber which underlies the lid of the housing, rotor provided with the deflector and blades mounted inside the separation chamber whose working surfaces are covered with a belt made of a filtering material, deflecting plate secured to the housing lid inside the separation chamber under the blades, and droplet deflecting member interposed between the deflecting plate and housing and made of a ring made of a filtering material. Between the housing and sleeve is the ring chamber.

EFFECT: reduced hydraulic resistance.

1 dwg

Description

The invention relates to a gas purification technique for separating liquid droplets from a gas stream being cleaned in wet dust collectors, and can be used in the metallurgical, mining, chemical, and building materials industries.

A drop catcher is known for separating liquid droplets from a gas stream, comprising a housing with inlet and outlet nozzles and a nozzle for draining the liquid, a perforated cylindrical cup located inside the housing and tangentially connected to the inlet nozzle, a separation chamber located under the housing cover, and blades mounted in separation chamber (USSR Author's Certificate No. 631215, class B 04 C 9/00, 1972).

A disadvantage of the known droplet eliminator is its high hydraulic resistance due to the presence in it of an additional separator with a granular layer.

Known droplet eliminator for separating liquid droplets from a gas stream, taken as a prototype, comprising a housing with inlet and outlet nozzles and a nozzle for draining liquid, a perforated cylindrical cup located inside the housing, tangentially connected to the inlet nozzle and provided with a truncated cone in the upper part, a chamber separation located under the housing cover, blades installed in the separation chamber, a reflective plate mounted on the housing cover in the separation chamber under the blades, louvres a fabric installed over a reflective plate (USSR Author's Certificate No. 874208, class B 04 C 9/00, 1981).

A disadvantage of the known droplet eliminator is that it is dimensioned (with increased height and diameter), which increases the hydraulic resistance, as well as the fact that it allows the passage of fine droplets into the pipe for exhaust gas.

The problem to which the invention is directed is to increase the efficiency of separating liquid droplets from a gas stream, achieved by reducing hydraulic resistance and more fully capturing finely dispersed drops of liquid and material.

This problem is solved in that in a droplet eliminator containing a housing with an inlet, outlet and drain pipes, a perforated cylindrical cup located inside the housing, tangentially connected to the inlet pipe and provided with a truncated cone in the upper part, a separation chamber located under the housing cover, a rotor blade installed in the separation chamber, a reflective plate mounted on the housing cover in the separation chamber above the blades, a drop-off element installed in the gap between the plate and the housing m, the rotor is equipped with a fairing, the working surface of each of the blades is covered with a strip of filter material, the droplet-breaker element is made in the form of a ring of filter material, the perforated cylindrical glass is equipped with an annular chamber from the outside.

Providing the rotor with a cowl reduces hydraulic flow resistance.

Coating the working surface of each of the blades with a strip of filter material promotes coagulation of small drops into large ones.

The implementation of the drop-off element in the form of a ring makes it possible without a significant increase in hydraulic resistance to catch the droplets, enlarge them and contribute to a breakdown in the annular gap between the glass and the body.

The supply of the perforated cylindrical glass outside the annular chamber allows you to isolate the glass between him and the body and thereby not affect the distribution of pressure between these cavities.

The drawing shows the proposed droplet eliminator, General view.

The droplet eliminator is made in the form of a vertical cylindrical body 1 with a tangential inlet pipe 2 located in the lower part of the body, and an outlet pipe 3 located in the upper part of the body. At the bottom of the housing there is a drain pipe 4. The upper part of the housing is made collapsible and is assembled from the bottom using flanges. An electric drive 6 of a rotor 7 is mounted on the cover 5 of the housing 1. On the inside, a reflective cone-shaped plate 8 is attached to the cover of the housing, the cylindrical skirt of which borders on the drop-off element 9. A cup 10 is coaxially mounted inside the housing, the lower part of which is made with perforation. The upper conical part 11 of the glass, the reflecting plate 8, the drop-off element 9 and the cover 5 of the housing form a separation chamber in which the rotating blade rotor 7 is centrally mounted. For the even distribution of hydraulic resistance along the height of the apparatus, the upper part of the housing has a diameter larger than the diameter of the lower part. Removing the trapped liquid from the cup 10 is carried out through the drain pipe 4 in the bottom of the housing, and from the annular chamber 13 of the space between the glass and the housing through the drain pipe 12.

Drop eliminator works as follows.

The gas-liquid mixture enters the housing 1 through a tangential inlet 2. The dropping liquid, thrown from the gas stream due to centrifugal forces to the perforated wall of the glass 10, coagulates on this wall, and part of it flows down the inner surface of the glass and moves down between the wall of the glass and the glass . Part of the liquid, which was not caught at this stage, is carried away by the gas flow into the separation chamber, where it is twisted by the rotor 7 and thrown at a high speed onto the wall of the reflective plate 8, coagulates on it and on the drop-off element 9 and flows down the wall between the glass 10 under the action of gravity and the housing 1 into the drain pipe 12. Next, the gas purified from the dropping liquid through the pipe 3 by means of traction stimulators (not shown) is discharged into the atmosphere.

Thus, in the proposed droplet eliminator, liquid droplets are separated from the gas stream three times, which allows to obtain a high degree of gas purification.

The proposed droplet eliminator can be used in wet gas cleaning systems to trap liquid droplets after venturi scrubbers, rotoclones, foam machines and other wet dust collectors.

Claims (1)

A droplet eliminator comprising a housing with inlet, outlet and drain pipes, a perforated cylindrical cup located inside the housing and provided with a truncated cone in the upper part, a separation chamber located under the housing cover, a rotor blade mounted in the separation chamber, a reflective plate mounted on the housing cover in the separation chamber above the blades, and a drop-off element installed in the gap between the reflective plate and the housing, characterized in that the rotor is equipped with a fairing, working rot The fineness of each of the blades is covered with a strip of filter material, the drop-off element is made in the form of a ring of filter material, and an annular chamber is formed between the housing and the glass.