SU1523840A1 - Vertical furnace - Google Patents

Abstract

The invention relates to a device for burning fuel, can be used in industrial boiler rooms and allows to increase the economy by reducing underburning. The vertical furnace contains a combustion chamber 1 connected by a bypass window 4 and a cooling chamber 2 shielded by pipes 3. The combustion chamber 1 is equipped with tangential burners 8 and a grate 10. Walls 6 of the combustion chamber 1 and walls 7 of the roof are covered with a perforated screen 5, burners 8 are located away from the grid 10 at a distance of 1-8.5D _g , and from window 4 at a distance of 3-18D _g , where D _g is the diameter of the burner 8. Window 4 is made of an area equal to 0.12-0.83 of the area of the combustion chamber 1, and the walls 7 of the dome are located at an angle of 50-140 ° to the walls 6 of the combustion chamber 1. 8 Il.

Description

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lattice Yu at a distance of 1-8.5 d,., and from window A at a distance of 3-18 d., where dp is the diameter of the burner 8. Window 4 is made with an area of 0.12-0.83

The invention relates to a device for burning fuel and can be used in industrial and heating boilers.

The aim of the invention is to improve the economy by reducing the rain.

Figure 1 shows a vertical furnace, a longitudinal section; figure 2 is a section of the LA in figure 1 (option t); on fig.Z - section BB in figure 1; FIG. 4 shows the section L-A in FIG. 1 (option 2)} in FIG. 5 is the section A-A on (| “D.1 (option 3); FIG. 6 - the node B in FIG. 1 (option 1); in fig. 7 - node B in figure 1 (option 2); in figure 8 - node B in figure 1 (option 3)

The vertical furnace contains a combustion chamber 1, a cooling chamber 2, shielded pipes 3 with a working medium (in particular, water), an overflow window 4 connecting the chambers 1 and 2 between the outer perforated metal screen 5, the firing side walls 6 of the combustion chamber 1 and the walls 7 of the chamber arch forming a window 4.

The combustion chamber 1 is equipped with tangential burners 3 of solid fuel, which are equipped with nozzles

9 angular slurry and an x-grate grate 10 fitted with an air duct 11. On the grate G: 10 siedeli zolovshkovy channel 12. The burners 8 are installed at a distance (II), rap (1-8.5) dr from the surface of the grate

10 and at a distance (H) equal to (3-18) dj. from the bypass window 4, dd, d is the diameter of the burner 8. The bypass window 4 is made with an area of the passage section, and a rapha 0.12-0.83 plots of the sections of the combustion chamber 1, and the walls 7 of the roof forming window 4, installed at an angle of t to the side walls 6 of the chamber 1, equal to 50-140. The cooling chamber 2 is provided with an exit window 13.

The operation of the vertical furnace is as follows.

area of the combustion chamber 1, and the walls

The 7s are located at an angle of 50-140 to the walls 6 of the combustion chamber 1.

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The water coal suspension is through nozzles 9 and the air through the burners 8 is introduced into the volume of the combustion chamber 1. Under the influence of high temperatures, the sprayed drops of the coal-water slurry ignite and burn to release heat.

Due to the resulting interaction of the air-fuel jets, the torch rotates relative to the conventional circle in the center of the furnace and moves to the exit window 13 of the cooling chamber 2. Part of the heat of the torch is spent on heating the additional screen 5, and the other part is transferred to the pipes 3 to heat the working medium. By installing an additional screen 5 along the walls of the combustion chamber 1, a reduction in the degree of heat removal to the pipes 3 is achieved, which contributes to the improvement of the ignition conditions in the combustion chamber 1. The choice of parameters H (1-8,5) d f .; (3-18) d, the cross section of window 4, equal to (0.12-0.83) F, hail, ensured the minimum degree of underburning of the water-carbon suspension at the minimum input air flow rates. By introducing a part of the air chera box 11 under the working sheet of the mechanical grate 10, additional burning of the largest particles separating from the main plume is achieved. The presence of smoldering (hot) particles of the suspension on the Lattice contributes to the additional stabilization of the ignition of the torch of the burners 8 and nozzles 9.

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Fore Pool Invention

A vertical firebox containing shielded cooling and combustion chambers located one above the other, the latter of which is equipped with solid fuel burners and a mechanical grate, the chambers communicating with each other by means of a bypass window formed by the walls of the arch of the combustion chamber, characterized in that

5 15238AO6

in order to increase efficiency by equal (3-18) dr from the bypass window,

reduction of underburning, side walls and the latter is performed with an area

combustion chambers and its arch are equipped with a passage section of 0.12-0 83

an additional perforated metal-sectional area of the combustion chamber, and a lyric screen, and the burners are set tangentially and at a distance.

equal to (1-8.5) d from the surface of the grate and at a distance,

the walls of the vault, forming a window, are set at an angle to the side walls of the combustion chamber, equal to 50-140 °, where dp is the diameter of the burner.

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6.33J

FIG. 2

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the cross-sectional area of the combustion chamber, and

the walls of the vault, forming a window, are set at an angle to the side walls of the combustion chamber, 50-140 °, where dp is the diameter of the burner.

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Claims (1)

Claim 50 A vertical firebox containing shielded cooling and combustion chambers located one above the other, the last of which is equipped with solid fuel burners and a mechanical grate, the chambers being interconnected by a bypass window formed by the walls of the roof of the combustion chamber, characterized in that, with 5 '1523840 in order to increase efficiency by reducing the underburning, the side walls of the combustion chamber and its arch are provided with an additional perforated metal screen, and the burners are installed tangentially and at a distance equal to (1-8.5) d _r from the surface of the grate and at a distance equal to (3-18) d _r from the bypass window, the latter being made with the passage area equal to 0.12-0.83 of the combustion chamber cross-sectional area, and the arch walls forming the window are installed at an angle to the side walls of the combustion chamber equal to 50-140 °, where d _r - diameter orelki. FIG. 2 FIG. 5 if Fig. B S FZ / g. 7 ϊ