SU660695A1 - Centrifugal apparatus for cleaning gas from suspended particles - Google Patents

Description

one

This invention relates to a technique for cleaning heterogeneous gas systems from solid or liquid particles suspended in them and may find application in an area of industry that requires cleaning gases from solid or liquid particles suspended in them, for example, in the chemical industry, metallurgical, pharmaceutical, and so on. .d

Centrifugal apparatuses for gas purification from suspended particles are known, comprising a housing with a central inlet nozzle connected to a cylinder coaxially located in the housing, inside which a fairing with a twisting device is installed with a gap, a clean gas outlet located under the cylinder, and a nozzle for removal of trapped dust.

However, these devices have significant drawbacks.

First, the gas flow coming out of the annular gap between the fairing and the cylinder is weak and unregulated; secondly, the gas flow captured by the main stream from the upper part of the body squeezes the suspended particles to the central part

mainstream, reducing separation efficiency; thirdly, when the main gas flow is separated from the cylindrical insert between the insert and the exhaust pipe, a secondary vortex appears, which prevents particles from moving into the cavity between the exhaust pipe and the housing.

Also known is a centrifugal apparatus for purifying gas from particulate particles, comprising a housing with a central inlet nozzle connected to a cylinder coaxially located in the housing, inside of which is installed a fairing with a twisting device, a clean gas outlet located under the cylinder, and withdrawal of the caught py-1 3.

This device is the closest to the technical essence and the achieved result to the proposed one.

The disadvantage of it is the low gas cleaning efficiency, due to the small amount of centrifugal forces developed by the machine.

The aim of the invention is to increase the degree of gas purification by increasing the centrifugal forces.

This goal is achieved by the fact that the apparatus is equipped with an ejector installed inside the skirt and guide vanes connected to it, and the cylinder is made with radial channels.

It is also advisable to provide the apparatus with conical rings arranged between the cylinder and the exhaust pipe, which are made with diameters that decrease in the direction from the cylinder to the exhaust pipe.

The drawing shows the proposed device.

The centrifugal apparatus consists of a housing 1 with a central inlet nozzle 2 connected to a cylinder 3 coaxially located in the housing, inside which there is a fairing 4 with a swirling device 5, a nozzle 6 for the release of clean gas placed under the cylinder, and a nozzle 7 for trapping dust. An ejector 8, having a reduced pressure chamber connected to the cavity between the coaxial cylinder and the housing by means of radial nozzles 9, and an increased pressure chamber connected to the cavity between the fairing and the coaxial cylinder using an annular gap is built into the fairing. In the slot, guide vanes 10 are installed, giving a tangential direction to the gas flowing out of it. Between the cylinder and the exhaust pipe are installed conical rings, 11, the diameter of which decreases from the cylinder to the exhaust pipe.

The device works as follows.

The dust-laden gas, having passed the swirling device 5, enters the cavity between the cylinder 3 and the fairing 4. An ejecting gas flows through the nozzle through the nozzle, which, after passing through the ejector, is ejected through the annular gap into the cavity between the fairing and the cylinder, facilitating the movement of suspended particles to the periphery. main thread. Replaced on the wall of the cylinder dust moves down and through the gaps between the conical rings enters the settling part of the cavity between the cylinder and the housing. Due to the vacuum created by the ejector in the upper part of the body, a part of the gas along with the dust also passes gaps between the conical rings, facilitating the movement of particles into the settling part of the apparatus. The velocity of the gas in the gaps between the rings and in the annular gap of the fairing is regulated by the amount of gas supplied to the ejector through the nozzle 12. The gas thus purified through the nozzle 7 is sent further into production or released into the atmosphere.

Claims (3)

1. A centrifugal gas cleaning apparatus for visited particles, comprising a housing with a central inlet nozzle connected to a coaxially arranged in the housing there is a cylinder inside which there is a fairing with a swirling device, a nozzle for clean gas outlet located under the cylinder, and a nozzle for removal of collected dust, characterized in that, in order to increase the degree of gas purification by increasing centrifugal forces, it is equipped the ejector and guide vanes connected to it, and the cylinder is made with radial channels. 2. The apparatus according to claim 1, characterized in that it is provided with conical rings arranged between the cylinder and the exhaust pipe, made with diameters decreasing in the direction from the cylinder to the exhaust pipe. Sources of information taken into account in the examination 1.Patent of France No. 1563990, cl. B 01 D 45/00, 1969. 2. The patent of Germany No. 923523, kl.Ob 3/20, 1955. 3. USSR author's certificate number 450582, cl. On 01 D 45/12, 1973.