RU223762U1 - Cyclone for gas purification - Google Patents

Abstract

The utility model relates to devices for cleaning flue gases from solid particles and can be used in the metallurgical, oil and gas and thermal power industries. A cyclone for gas purification contains a vertical cylindrical body with a conical bottom equipped with a fitting for removing dust, a fitting for supplying a dusty gas flow located tangentially to the body, a cover, and an exhaust pipe that performs the function of removing purified gas. The exhaust pipe is made in the form of a cylinder, gradually decreasing in diameter along with height. The technical problem to be solved by the claimed utility model is to increase the environmental efficiency of the cyclone by capturing particles of the medium and fine dispersed phase and thereby reducing atmospheric air pollution. 1 ill.

Description

The utility model relates to devices for cleaning flue gases from solid particles (dust, soot, ash) and can be used in the heat and power, oil and gas and metallurgical industries.

The problem that exists in the field of cleaning a dusty gas stream is that all known cyclones allow for the separation of only large particles of the dispersed phase from the dispersion medium (gas) with their subsequent removal, and medium and small particles of the dispersed phase, due to their small size and lightness, enter the atmosphere, resulting in air pollution and environmental deterioration.

A known cyclone type TsN-15 (Handbook of dust and ash collection. Edited by A.A. Rusanov. - M.: Energia, 1975), which contains a vertical cylindrical body with a conical bottom, equipped with a fitting for removing dust, a fitting for supplying into a dusty gas flow apparatus located tangentially to the body, a cover, an exhaust pipe made in the form of a hollow cylinder.

The cyclone works as follows: the dust and gas flow through a fitting installed tangentially to the cyclone body enters inside. The dusty gas flow passes in a circle around the exhaust pipe and moves spirally downwards, ensuring the separation of large particles of the housing; the flow loses speed and changes its direction, as a result of which suspended particles fall out. Purified gases from large particles move in an upward spiral to the exhaust pipe, through which they are removed from the cyclone. Collected particles are removed through a fitting.

Cyclone TsN-15 allows you to effectively remove suspended particles of only the large dispersed phase from a dust and gas flow.

A significant disadvantage of this cyclone is the low efficiency of removing suspended particles of the medium and fine dispersed phase from the dust and gas flow. This is due to the fact that the mass of suspended particles of the medium and small dispersed phase is too small, as a result of which they will not be separated from the gas flow. Therefore, the fine and medium dispersed phase, together with purified gas from the large dispersed phase, enters the atmosphere in sufficient quantities.

The technical problem to be solved by the claimed utility model is to increase the environmental efficiency of the cyclone by capturing particles of the medium and fine dispersed phase and thereby reducing atmospheric air pollution.

The task is achieved by the fact that a cyclone for gas purification containing a vertical cylindrical body with a conical bottom equipped with a fitting for removing dust, a fitting for supplying a dusty gas flow located tangentially to the body, a cover, an exhaust pipe that performs the function of removing purified gas, according to the useful model, the exhaust pipe is made in the form of a cylinder, gradually decreasing in diameter along with height.

A feature that distinguishes the claimed cyclone from the known one, chosen as a prototype, is the execution of the exhaust pipe in the form of a cylinder, stepwise decreasing in diameter along with height.

Thanks to this distinctive feature, the proposed cyclone increases the degree of purification of dust and gas flows. This is due to the fact that the dust and gas flow, entering inside, passes in a circle 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 housing, the flow loses speed and changes its direction, as a result of which large dust particles fall out. The flue gases, purified from large particles of the dispersed phase, move in a spiral to the exhaust pipe, passing sequentially through cylinders that stepwise decrease in diameter in height, thereby being purified from the middle and fine dispersed phases and then ejected from the cyclone. Thus, thanks to the new design of the exhaust pipe, the dust and gas flow is cleared not only of large particles, but also of the middle dispersed phase and the fine dispersed phase.

The proposed cyclone filter for gas purification is illustrated by a figure that shows a vertical section of the cyclone. The cyclone contains a vertical cylindrical body 1 with a conical bottom 3, equipped with a fitting for removing dust 3, a fitting for supplying a dust-laden gas flow 5 to the apparatus, located tangentially to the body, a cover 6, an exhaust pipe 4, made in the form of a cylinder, stepwise decreasing in diameter along height.

The cyclone works as follows.

The dust and gas flow through fitting 5 enters the cyclone body 1 and, passing in a circle around the exhaust pipe 4, moves spirally downwards, ensuring the separation of large particles of the dispersed phase from the dispersion medium (gas). In the lower part of the housing, the flow loses speed and changes its direction, as a result of which large particles of the dispersion phase fall out and are removed through the dust removal fitting 3. The gases, cleared of dust particles of the large and medium dispersed phase, move in an ascending spiral to the exhaust pipe 4, and, passing sequentially through cylinders, stepwise decreasing in diameter with height, the gases are purified from the middle and fine dispersed phases, and then released from the cyclone into the atmosphere.

Thus, this useful model can significantly increase the degree of purification of the dust and gas flow from solid particles and thereby improve the environmental situation.

Claims (1)

A cyclone for gas purification, containing a vertical cylindrical body with a conical bottom equipped with a fitting for removing dust, a fitting for supplying a dusty gas flow located tangentially to the body, a cover, an exhaust pipe that performs the function of removing purified gas, characterized in that the exhaust pipe is made in in the form of a cylinder, gradually decreasing in diameter along with height.

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