SU1638463A1 - Burner - Google Patents

Abstract

The invention relates to burners and m. used for burning fuel in various heat engineering devices. The purpose of the invention is to increase efficiency by increasing the intensity of mixing. In the annular gap 5 at a distance of 0.3 (dK-dr) from the inner surface of the housing 1, in the area of the gas holes 4 a turbulizing grid 6 is installed, where oV and dT are the diameters of the housing 1 and the pipe 3, respectively. The oxidizer from the pipe 2 in the form of a drift flows into the gap 5. Gas is supplied through pipe 3 and flows out of it through the opening 4. In the zone of interaction between the jets and the flow, a high level of turbulence is generated by grid 6. At the same time, the intensity of mixing along the length, 2 or more, 1 tab.

Description

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The invention relates to burner devices and can be used for burning fuel in various thermal engineering devices.

The purpose of the invention is to increase efficiency by increasing the intensity of mixing.

FIG. 1 shows a burner, a longitudinal section; in fig. 2 - mesh element.

The burner includes a housing 1 with a nozzle 2 for introducing an oxidant and an axially located pipe 3 with gas-emitting holes

4 forming an annular gap 5 with the housing 1, in which at a distance of I 0.3 (oV-dr) from the inner surface of the housing 1 in the zone of the gas holes 4 there is a turbulizing grid 6, where dK and dT are the diameters of the housing 1 and pipes 3.

The burner works as follows. The oxidant from the pipe 2 in the form of a drift stream enters the annular cavity

5. Gas flows through pipe 3 and flows out of it through openings 4. In the zone of interaction between the jets and the flow, a high level of turbulence is generated by the turbulizing grid 6. This significantly increases the intensity of mixing along the length.

The table shows the data on the parameter Xp - the relative length required Y /

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five

for the practical completion of mass transfer processes for one set of geometrical and operating parameters (n 8 - number of holes, 5 mm - hole diameter; dK 50 mm, D1 D2 2 mm - mesh cell size; 5 0.5 mm - grid thickness, T - the relative distance of the grid from the body),

Installing a turbulizing grid 6 at a distance of I 0.3 (dK-dT) from the inner surface of the housing 1 makes it possible to increase the intensity of mixing along the length by 15% or more.

Claims (1)

Invention Formula A burner comprising a housing with an outlet for the introduction of an oxidizing agent and located along the axis there is a pipe with gas-emitting holes, which forms an annular gap with the body, characterized in that, in order to increase efficiency by increasing the mixing intensity, the burner further comprises a turbulizing net located in the annular gap at a distance of 0.3 (dK- dT) from the inner surface of the housing in the area of gas holes, where dK, dT are the diameters of the housing and pipes.