RU100737U1 - CYCLONE FILTER - Google Patents

Abstract

 A cyclone filter comprising a vertical cylindrical housing provided with a nozzle for removing dust, a nozzle for supplying a dusty gas stream to the apparatus located tangentially to the housing, a cover, an exhaust pipe, characterized in that the cylindrical part of the housing is made of porous air-permeable material and is further provided a casing inside which filter material is installed.

Description

The utility model is intended for cleaning gases from dust in the field of action of centrifugal forces and forces of electrical interaction; it can be used in chemical, petrochemical, metallurgical, fuel and energy and other industries.

The problem in cleaning flue gases from dispersed dust particles is to protect the environment from pollution by dust particles. Known cyclones that solve this problem allow you to clean flue gases from large and medium dispersed particles, but do not capture particles of a fine dispersed phase.

Known cyclone TsN-15 [Kasatkin A.G. "Basic processes and apparatuses of chemical technology". Publishing house 8, re., M .: Chemistry, 1971, 241]. The cyclone contains a cylindrical body with a tangential inlet pipe and a conical bottom, an axial exhaust pipe, a dust bin.

The cyclone works as follows: the dust and gas stream through a nozzle installed tangentially to the cyclone body enters. The dusty gas stream passes around the circumference around the exhaust pipe and moves spirally downward, ensuring the separation of large particles of the dispersed phase from the dispersion medium (gas). In the lower part of the body, the flow loses speed and changes its direction, as a result of which suspended particles fall out. The purified gases move in an upward spiral towards the exhaust pipe, through which they are discharged from the cyclone. The removal of trapped particles occurs through the fitting.

Known cyclone allows you to remove large and medium dispersed particles from a dusty gas stream.

A disadvantage of the known cyclone is its low efficiency when cleaning a dusty gas stream. This is due to the fact that the particles of the fine dispersed phase have insufficient mass to remove them under the action of centrifugal force.

The closest in technical essence to the claimed solution is a filter cyclone [RF patent No. 56221, B04C 9/00, publ. 09/10/2006].

The cyclone filter contains a vertical cylindrical body with a conical bottom, equipped with a pipe for removing dust, the exhaust pipe is made in the form of a hollow cylinder, a pipe for supplying a dusty gas stream to the apparatus located tangentially to the body, a cover, a set of filters installed inside the exhaust pipe, in its upper part.

The filter cyclone operates as follows. The dust and gas stream through the pipe enters the filter cyclone body and, passing around the circumference around the exhaust pipe, moves spirally downward, ensuring the separation of large and medium particles of the dispersed phase from the dispersion medium (gas). In the lower part of the body, the flow loses speed and changes its direction, as a result of which large and medium particles of the dispersed phase fall out and are removed through the nozzle to remove dust. Gases purified from particles of large and medium dispersed phases of dust move in an upward spiral to the exhaust pipe, and passing through a set of filters, the gases are purified from the fine dispersed phase and then removed from the cyclone filter to the atmosphere.

The cyclone allows you to remove large, medium and small dispersed particles from a dusty gas stream.

The disadvantage of the cyclone is that, when dust accumulates in the filter element of the exhaust pipe of the cyclone, the hydraulic resistance of the cyclone increases, which leads to a decrease in the gas flow velocity in the cyclone element. This leads to a decrease in cleaning efficiency.

The objective of the utility model is to create a cyclone that increases the degree of purification by maintaining a high gas flow rate.

To solve the problem in a cyclone containing a vertical cylindrical housing, equipped with a pipe for removing dust, a pipe for supplying a dusty gas stream located tangentially to the body, the cover, exhaust pipe, and the cylindrical part of the body are made of porous material that allows air to pass through and is additionally equipped with a casing inside which the filter material is installed.

Signs that distinguish the claimed cyclone from the known one selected as a prototype is the implementation of the cylindrical part of the housing from a porous, air-permeable material, and supplying it with a casing, inside which is installed a filter material.

The presence of significant distinguishing features indicates the conformity of the proposed solution to the patentability criterion of "novelty."

Due to the distinguishing features of the proposed cyclone has a high degree of purification of particles of large, medium and fine dispersed composition by maintaining a high gas flow velocity. This is due to the fact that dust particles of the dust and gas stream, passing through the pipe to supply a dusty gas stream, enters the cylinder-conical housing. The dusty gas stream circles around the exhaust pipe and spirals downward. Under the action of centrifugal force, dust particles are thrown to the walls of the cyclone. Due to the pressure difference, small dust particles with air flow penetrate through the pores in the cylindrical part of the cylindrical conical body and are retained in the filter material. Due to the decrease in air volume in the cyclone, the concentration of dust particles increases, which increases the likelihood of their collision, enlargement, and increase in particle mass. Under the action of centrifugal force, large and medium dust particles are thrown to the walls of the cyclone, collide with them and flow down under the influence of gravity. In the lower part of the body, the flow loses speed and changes its direction, as a result of which the separation of medium dust particles occurs. The purified gases move in an upward spiral towards the exhaust pipe, through which they are discharged from the cyclone. The removal of trapped particles occurs through the fitting.

The proposed cyclone for gas cleaning is illustrated in the drawing. Figure 1 shows a vertical section of a cyclone.

The cyclone contains a vertical cylindrical housing 1, the cylindrical part 2 of which is made of porous, air-permeable material, a pipe 3 for removing dust, a pipe 4, for supplying a dusty gas stream to the apparatus, located tangentially to the body, a cover 5, an exhaust pipe 6, a filter material 7, casing 8.

The cyclone filter works as follows. Through the inlet pipe 4, the dust and gas stream is supplied to the cylinder-conical housing 1. The dusty gas stream passes around the circumference around the exhaust pipe and moves spirally downward. Under the action of centrifugal force, dust particles are thrown to the walls of the cyclone. Part of the dust and gas stream containing fine dust particles penetrates through the pores of the walls of the cylindrical part 2 of the cyclone body. Small particles of dust settle on the filter material 7. Due to the decrease in air volume in the cyclone, the concentration of dust particles increases, which increases the likelihood of their collision, enlargement, and increase in particle mass. Under the action of centrifugal force, large and medium dust particles are thrown to the walls of the cyclone, collide with them and flow down under the influence of gravity. In the lower part of the body, the flow loses speed and changes its direction, as a result of which the separation of medium dust particles occurs. The purified gases move in an upward spiral to the exhaust pipe 6, through which they are removed from the cyclone. The removal of trapped particles occurs through pipe 3. If the filter material is contaminated with fine dust, it is replaced.

Claims (1)

A cyclone filter containing a vertical cylindrical housing provided with a nozzle for removing dust, a nozzle for supplying a dusty gas stream to the apparatus located tangentially to the housing, a cover, an exhaust pipe, characterized in that the cylindrical part of the housing is made of porous air-permeable material and is further provided a casing inside which filter material is installed.