SU920320A1 - Vertical squared fire box - Google Patents

Description

(5) VERTICAL RECTANGULAR FOOTH

one

The invention relates to power engineering machinery and can be used in steam boilers when burning fuels with high and moderate reactivity.

A well-known vertical rectangular firebox with installed rusami on its vertical walls with burners directed tangentially to the conventional circle Щ.

A disadvantage of the known furnace is low combustion efficiency due to poor filling of the furnace volume.

Also known is a vertical rectangular stove with installed rusa on its vertical walls inclined downward by burners directed tangentially to the conventional circle 121.

However, the small angle of inclination of the burners with respect to the horizontal plane and the insufficient distance between the burners of the lower Rus

And the lower edge of the vertical walls do not provide good mixing of fuel with air in the lower part of the furnace, which reduces the efficiency of combustion of fuel.

The aim of the invention is to improve the efficiency of combustion of fuel,

This goal is achieved by setting the burners to an angle

10 inclination relative to the horizontal plane within 20-60 °. . In this case, it is advisable that the distance between the low light of the burners and the lower edge of the vertical

The 15 walls were 0,, 8 of the half-sum of the width and depth of the firebox.

Fig. 1 shows a vertical rectangular firebox, a common view; in fig. 2 shows section A-A in FIG. one.

20

The vertical rectangular furnace contains burners 3 and 4 inclined downward on its vertical walls 1 and 2 and directed tangentially to the conventional circle. The burners 3 are also installed with an angle of inclination dl relative to the horizontal plane of 20-60. Lower Russian burners TS. placed from the bottom edge of the vertical walls 1 and 2 at a distance L of 0.3-0.8 of the half-sum of the width and depth of the firebox. The furnace works as follows. The fuel-air mixture through the burners 3 and is introduced into the furnace, forming a vertical vortex in it, in which the fuel burns. Studies show that the installation of the burners 3 and with a downward tilt at an angle d. with respect to the horizontal plane within 20-60 °, and also the implementation of the distance L between the burners of the lower tusk and the lower edge of the vertical walls 1 and 2 8 within 0.3-0.3 of the half-sum of the width and depth of the firebox leads to the best using the bottom of the firebox. In this case, the movement of burning jets is provided below the level of the burners 3 and from the corresponding tusk. As a result, the tail volumes of the torches of the burners 4 and 3, at the exit to the upper part of the furnace, interact with fresh streams, turbulize them and partially entrain syowa at the lower part of the furnace. This helps to improve the burning of fuel, as well as reducing the formation of harmful oxides in the plume. Invention 1, Vertical rectangular firebox with installed rusami on its vertical walls inclined down with warmers directed tangentially to the conventional circle, which is that, in order to increase the combustion efficiency of the burners, the angle of inclination of the burners relative to the horizontal plane is 20 60 °. 2. Top pop, 1, characterized in that the lower rushes of the burners are located from the lower edge of the vertical walls at a distance of 0.3-0.8 from the half-sum of the width and depth of the furnace. Sources of information taken into account in the examination 1.US Patent N 2216117, cl. 110-28, published. 1971. 2.Sotnikov I.A. et al. Basic design and design solutions for the steam boiler P-67 at the Kakskachach brown coal for 800 MW power units. - Thermal Power Engineering, 1978, no. 8, p. 2-8.

Claims (2)

Claim 1. A vertical rectangular firebox with installed tiers on its 10 vertical walls with inclined panels. The air-fuel mixture through the burners 3 and 4 is introduced into the furnace, forming a vertical vortex in it, in which the combustion of fuel occurs. Studies show that the installation of burners 3 and 4 with an inclination downward at an angle of 8. with respect to the horizontal plane within 20-60 °, as well as the implementation of the distance L between the burners 4 of the lower tier and the lower edge of the vertical walls 1 and 2 within 0, 30.8 from half the width and depth of the furnace leads to better use of the lower part of the furnace volume. This ensures the movement of the burning jets below the location of the burners 3 and 4 of the corresponding tier. As a result, the tail volumes of the torches of burners 4 and 3, when entering the upper part of the furnace, interact with fresh jets, are turbulized by them and are partially carried away to the lower part of the furnace. down by heaters directed tangentially to the conditional circumference, characterized in that, in order to increase the efficiency of fuel combustion, the angle of inclination of the burners relative to the horizontal plane is 20-60 °. 2. Firebox pop. 1, I distinguish it by the fact that the lower tier of the mount · 20 lock is placed from the lower edge of the vertical walls at a distance of 0.3 ^_ 0.8 from half the width and depth of the furnace.