RU1774132C - Separator-dust concentrator - Google Patents

Abstract

Use for preparing solid fuel before burning. SUMMARY OF THE INVENTION: shell covers are screw-shaped, and the concentrated mixture outlet pipe is connected to the cap at its end, the mixture mixture inlet pipe is connected to the cylindrical insert along its entire length, is slit-like and placed perpendicular to the concentrated mixture discharge pipes. In this case, the inlet ends of the discharge pipes are located at the junction of the shells with the conical transition, and the total cross section of the branch pipes for the concentrated mixture and the waste pipes does not exceed the cross section for the air mixture inlet pipe. 3 ill.

Description

The invention relates to a power system and can be used in thermal power plants in dust preparation systems.

A ring-shaped dust concentrator is known. comprising a housing with end caps and tangential nozzles for admitting and discharging the air mixture with an angle of rotation of the flow of at least 180 °, having a dust separation degree of -0.9 and a minimum hydraulic resistance of the exhaust outlet without spatial bends 1.

The disadvantage of this dust concentrator is the low degree of dust separation and the absence of recirculation.

Known pylekon centralizer, containing a cylindrical body with an end cap and a waste pipe installed in the cover, tangential nozzles for entering the mixture, made in the form of flat with; sang 2.

The disadvantage of such a dust concentrator is the significant hydraulic resistance due to the presence of a swirl.

Known deligel-dust concentrator in a boiler unit, containing a multi-section housing, each section of which is made in the form of two coaxial cylindrical shells equipped with end caps and connected by conical transitions to a cylindrical insert, waste pipes located in the end caps, tangential branch pipes of the concentrated mixture, connected to the shells, and the tangential nozzle for introducing the air mixture 3.

A disadvantage of the known separator-concentrator is a decrease in efficiency due to the hydraulic resistance of the swirler installed in the duct.

The purpose of the invention is to increase profitability.

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This goal is achieved by the fact that in a divider-hub containing a housing in the form of two coaxial cylindrical shells equipped with end caps and connected by conical transitions to the cylindrical insert, waste pipes located in the end caps, tangential branch pipes of the concentrated mixture, connected to the shells, and a tangential nozzle for introducing the air mixture, the covers of the shells are screw-shaped, and the nozzle for withdrawing the concentrated mixture is connected to the cap at its end, the nozzle for introducing aerosol mixtures are connected to the cylindrical insert along its entire length, is slit-like and placed perpendicular to the branch pipes of the concentrated mixture, the input ends of the waste pipes being placed at the junction of the shells with the conical transition, and the total cross section of the branch pipes of the concentrated mixture and the waste pipes does not exceed the section of the input pipe aerosol mixtures

The implementation of screw-shaped shell covers makes it possible to translate the translational movement of dust to the branch pipes into rotational, which does not reduce the rotation speed of the air mixture at the outlet and contributes to additional separation of dust from gas. The connection of the nozzle of the inlet of the air mixture to the cylindrical insert along its entire length makes it possible to increase the twist moment by increasing the twist radius, pressure and supplying a significant mass of dust to the peripheral zone of the cylindrical insert due to the slotted inlet. The implementation of the inlet ends of the waste pipes at the junction of the shells with the conical transition allows you to remove dust from the waste pipes, since the dust slides along the conical transitions away from the waste pipes, which improves separation. In addition, dust falls through the shells due to an increase in the cross section from a stream that also promotes separation. The total cross-section of the branch pipes of the concentrated mixture and waste pipes not exceeding the cross section of the branch pipe of the air mixture allows you to create a pressure head in the burners without a drop in speed with minimal resistance. The placement of pipes of the pipe of the concentrated mixture perpendicular to the pipe of the mixture is made for reasons of explosion safety, to prevent dust accumulation in the lower portions of the nozzles The connection of the outlet pipe of the concentrated mixture with the cap at its end is made for reasons of economy alla and twist dust

lids that support the rotation of the mixture from the entrance and its exit.

In FIG. 1 shows a proposed split-dust concentrator, side view

end caps; in FIG. 2 is a view A in FIG. 1; in FIG. 3-divider - dust concentrator in a perspective view.

The divider dust collector contains a housing 1 in the form of two gzozny cylindrical

0 shells 2 and 3, equipped with end caps 4 and 5 and connected via conical transitions 6 and 7 to the cylindrical insert 8, waste pipes 9 and 10 located in the end caps 4 and 5,

5 tangential nozzles 11 and 12 of the outlet of the concentrated mixture, connected to the shells 2 and 3, and the tangential nozzle 13 of the input mixture, connected to the cylindrical insert 8 along its entire length,

0 made slit-like and placed perpendicular to the nozzles 11 and 12 of the outlet of the concentrated mixture. The covers 4 and 5 of the shells 2 and 3 are screw-shaped, and the inlet ends 14 and 15 are waste

5 pipes 9 and 10 are located at the joints of the shells 2 and 3 with conical transitions b and 7. The total cross-section of the pipes 11 and 12 "of the concentrated mixture and the waste pipes 9 and 10 does not exceed the cross-section of the pat0 cutting 13 of the air mixture. The nozzles 11 and 12 of the outlet of the concentrated mixture are connected to the caps 4 and 5 at their ends. A nozzle 16 can also be tangentially connected to the cylindrical insert 8

5 of the coolant inlet made slit-like and connected to the entire length of the insert 8 from the diametrically opposite side to enhance the twisting of the gas mixture and heat treatment of the dust. The housing 1 of the divider 0 of the dust concentrator is installed horizontally and is made of heat-resistant steel. The divider dust concentrator operates as follows.

Aerosol mixture from a mill-fan torus

5 enters the inlet pipe 13 of the housing 1 of the splitter-dust concentrator. Hot flue gases can also be fed into the housing 1 through the nozzle 16. In the cylindrical insert 8 of the housing 1, the aerosol mix spins for 0 s, delaminates and enters the shells 2 and 3, where it exfoliates even further and is additionally twisted on screw caps 4 and 5 that promotes separation. Through nozzles 11

5 and 12, concentrated dry dust is discharged, and a gas with some fine dust is discharged through the waste pipes 9 and 10. As a result of a powerful tangential swirl of the flow due to the pressure of the mill-fan in the housing 1 of the splitter-dust concentrator occurs

separation of aerosol mixtures into dust and gas without installing a cone generator in the tract, which reduces resistance.

Claims (1)

Claims A dust-concentrator divider containing a housing in the form of two coaxial cylindrical shells equipped with end caps and connected by conical transitions to the cylindrical insert, waste pipes located in the end caps, tangential discharge pipes of the concentrated mixture connected to the shells, and a tangential nozzle for introducing the air mixture - u and the fact that, in order to increase efficiency, the shell covers are screw-shaped, and the outlet pipe for the concentrated mixture is connected to the cover at its end, the mixture inlet port is connected to the cylindrical insert along its entire length, is slotted and placed perpendicular to the outlet pipes concentrated mixture, and the inlet ends of the waste pipes are placed at the junction of the shells with a conical transition, and the total cross-section of the discharge pipes of the concentrated mixture and waste pipes does not exceed the cross section of the inlet and fuel mixture. TO Figl 46 FIG 2