RU1805268C - Dust concentrator - Google Patents

Abstract

The invention relates to a power system and allows to increase efficiency. This is achieved by the fact that in the dust concentrator the housing 1 and the divider 9 are made spherical and the latter is installed in front of the cover 5 of the housing 1 with the formation of a spherical gap 11, in the lower part of which a swirl 8 is placed, while the quality of heat treatment is improved. 2 il ..

Description

The invention relates to a power system and can be used in thermal power plants in a dust-collecting system for fuel burning, mainly, low-grade coal.

The purpose of the invention is to increase profitability.

This goal is achieved by the fact that in n, an air concentrator containing a vertical housing with an inlet pipe and a discharge pipe, located coaxially in the bottom and cover of the housing, tangential pipes for the input of heat, carrier and pipe for removal of the concentrated mixture and a swirl and placed inside the housing a divider and a cylindrical nozzle, the latter being installed with the possibility of vertical movement, the housing and the divider are made spherical and the latter is installed under the housing cover with the formation a spherical gap, in the lower part of which a swirl is placed, and a branch pipe of the concentrated mixture discharge is placed in the bottom of the casing, a cylindrical nozzle is introduced into it with the formation of an annular gap, into which the said inlet pipe is in turn inserted.

The execution of the casing and the spherical divider with the installation of the latter under the cover of the casing with the formation of a spherical gap, in the lower part of which the swirl is placed, allows for thermal treatment of fuel in the fountain mode with the exception of the breakthrough of coarse dust into the discharge pipe, since for dust to pass through the spherical gap a double rotation of 180 ° is required into the discharge pipe, first at the cut of the spherical dissector, and then at the cut of the swirl blades. The spherical casing allows increasing the volume of the chamber with a minimum radiating outer surface and separating the upward and none-convergent flows inside the casing without the use of baffles. In addition, the spherical divider provides a large dust-drying surface and a smooth transition from upward to downward movement.

The installation of a cylindrical nozzle inside the branch pipe of the concentrated mixture discharge with the formation of an annular gap, and an inlet pipe introduced inside the nozzle, allows the nozzle to change the degree of dust recirculation in the case of the dust concentrator and, therefore, the degree of heat treatment, depending on the quality incoming coal. When the nozzle is lowered, the degree of recirculation increases.

and when raised upwards it decreases. Dust return to recirculation is provided by installing the nozzle and the concentrated mixture outlet pipe in the bottom of the body, where dust flows to the corpuscular wall of the body and is again thrown upstream from the nozzle.

Thus, repeatedly recirculating inside the spherical body, dust

spreads in a thin layer along the walls of the casing and is effectively dried in the gasification mode, which reduces its burning time in the furnace.

The drawing shows a dust concentrator

torus.

In FIG. 1 - longitudinal section; in FIG. 2 is a section AA in FIG. 1.

The dust concentrator comprises a vertical housing 1 with an inlet pipe 2 and

0 waste pipe 3, located coaxially, respectively, in the bottom 4 and cover 5 of the housing 1, the tangential nozzles 6 of the input of the coolant and the pipe 7 of the outlet of the concentrated mixture and placed

5 inside the housing 1, a swirler 8, a divider 9 and a cylindrical nozzle 10, the latter being mounted with the possibility of vertical movement. The housing 1 and the divider 9 are made spherical and

0 the latter is installed under the cover 5 of the housing 1 with the formation of a spherical gap 11, in the lower part of which a swirler 8 is placed, and a pipe 7 of the outlet of the concentrated mixture is placed in the bottom 4

5 of the housing 1, a cylindrical nozzle 10 is introduced into it with the formation of an annular gap 12, into which, in turn, the aforementioned inlet pipe 2 is inserted. The housing of the dust concentrator of the reactor is made of heat-resistant steel. On the nozzles b of the coolant inlet, installed in the place of the largest cross-section of the housing, slides 13 can be located, and the blades of the swirl 8 can be made

5 rotatable to control the degree of dedusting of gas discharge.

Dust concentrator works as follows.

Air mixture from the mill through the inlet

0 pipe 2 or tangential pipe 6 enters the housing 1 of the dust concentrator. If the aerosol mixture enters through the nozzles 6, then the coolant is supplied to the nozzle 2. The gate 13 controls the amount of heat transferring through the nozzles 6. Passing along the axis of the housing, the flow hits the divider 9 and returns along the walls of the divider from the housing to the bottom 4 of the dust concentrator, where it enters the annular gap 12 and is removed through the nozzle 7 of the concentrated mixture . Gases through the interscapular space of the swirler 8 and the spherical gap 11 enter the discharge pipe 3 and are removed from the housing 1. When the nozzle 10 is lowered, dust from the outlet pipe 7 is blown by the oncoming stream from the pipe 2 and again thrown to the divider 9, recirculated in the housing 1 Dust in the environment of flue gases is subjected to heat treatment, which leads to acceleration of its burning in the furnace and allows low-grade coals to be burned in the furnaces of ordinary boilers of ordinary boilers.

Claims (1)

SUMMARY OF THE INVENTION A dust concentrator comprising a vertical housing with an inlet pipe and a discharge pipe arranged coaxially respectively in the bottom and cover of the housing; tangential inlet pipes for the coolant and the outlet pipe for the concentrated mixture, and a swirl and a divider and cylindrical nozzles placed inside the housing, the latter being installed with the possibility of vertical movement, characterized in that, in order to increase efficiency, the housing and the divider are made spherical and the latter is installed under the housing cover with the formation of a spherical gap, in the lower part of which a swirl is placed, and the branch pipe of the concentrated mixture discharge is placed in the bottom of the housing, in a cylindrical nozzle is introduced with the formation of an annular gap into which, in turn, the aforementioned inlet pipe is introduced.