SU1702104A1 - Dust-and-gas divider - Google Patents

Abstract

The invention relates to pulverizing equipment of power plants and can be used in boiler houses of thermal power plants with a large location of burners when burning low-grade solid fuels. The purpose of the invention is to increase reliability and efficiency by reducing the content of coarse suspension in the lower outlet of the divider. When fuel enters with a higher content of difficult-to-grind xylito, most of the coarse dispersed flow after the separator of the mills enters the Russian burners due to the opening of the shut-off valves in the hollow insert of the swirler. 2 yl

Description

The invention relates to dust removal equipment of thermal power plants and can be used in the combustion of low-grade fuels.

The purpose of the invention is to increase reliability and efficiency by reducing the content of coarse suspension in the bottom outlet of the dust separator.

FIG. 1 shows a divider, a longitudinal section; in fig. 2 shows section A-A in FIG. one.

The dust-gas flow divider contains two or more cylindrical bodies 1 located coaxially one above the other with a decreasing cross-section in the direction of flow, a swirler 2 with six flat swivel blades 3 and a central cylindrical hollow insert located on its periphery. 4 with two rotary valves 5 installed inside the insert, and taps 6 of dust and gas mist from each case 1 of the divider.

The device works as follows.

When the fuel enters, the air mixture after the mill separator enters the first housing 1 of the divider, in which, with the valves 5 swirled 2 closed, the entire dust-gas flow passes through the blades J installed under a definite depth, which ensures that the outlets of both bodies 1 are evenly loaded . Upon receipt of fuels with a high content of xylitol significantly increases the proportion of large particles in the lower outlet 6, as the twist of the stream contributes to the release to the periphery of the coarse suspension first of all.

In this case, valves 5 are opened to a vertical position and due to the energy forces most of the large particles located in the axial zone transit into the second case 1, reducing their content in the lower outlet 6. Uniform supply of fuel through the river beds is achieved by setting a larger angle blades 3 on the periphery. Efficient redistribution of coarse suspension between branches 6 has reached

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When the ratio of the diameters of the insert 4 and the lower housing 1 of the divider is in the range of 0.5-0.6. At a smaller value, the efficiency of redistribution decreases, and at the larger one, it is not possible to distribute the fuel evenly enough to the burners.

Claims (1)

The invention The dust-gas flow divider, comprising a housing, a swirler with peripheral swivel blades and a central a cylindrical hollow insert and a mixture of aerosol, characterized in that, in order to increase reliability and efficiency by reducing the content of coarse suspension in the first in the direction of flow of the diverter flow, two locking rotary valves are installed in the hollow insert, and the diameter of the hollow insert is equal 0.5-0.6 diameter of the housing divider. /