SU1218246A1 - Vertical prism furnace - Google Patents

Description

1218246 .2

The invention relates to the field. The furnace works as follows, combusting fuel and can be used. Through burners 1 fuel is introduced into thermal power plants. An air mixture that, in the light of the invention, increases the heat transferred

the efficiency of mixing of gases with a recir-screen furnace. Combustion products,

kultsii with flue gases. formed by burning fuel.

FIG. 1 shows schematically a lift to the top of the furnace,

the proposed furnace, longitudinal -fitted with tangential nozzles 2 rez; in fig. 2 - raresez AA in figure 1;

ten

on

in fig. 3 shows a section BB in FIG. one; FIG. 4 shows a section B-B in FIG. one; nD) 5 — node 1 in FIG. one.

recycle.

Entering recirculation gases reduces, along with: the average level, the maximum temperatures in the combustion products, and with them eliminates negative slag processes. Vertical screened prismatic furnace with burners 1 and tangential nozzles located above them 2 recirculation gases, two channels 3 and 4 of rectangular cross section. The lower channel 3 of the nozzle 2 is placed horizontally to the conditional circle with a diameter equal to (0.1-0.2) L, and the upper channel 4 is placed vertically and directed tangentially to the conditional circle with a diameter (O, 35-0.4) L, where L is the width of the firebox.

Equipped with tangential nozzles 2

recycle.

The introduction of recirculation gases reduces, along with: the average level, the level of maximum temperatures in the combustion products, and with them eliminates the negative slagging processes at the top of the furnace. Making the nozzles 2 two-channel allows organizing a more complete filling of the cross section of the cooling chamber with cold gases. By doing

furnaces with tangential burners (Fig. 1), tangential nozzles 2 are oriented towards rotation of the flue gas stream in the furnace, which allows more intensive mixing of the combustion products with cold recirculation gases.

In b

(pu9.41 / L

extra

Circulation 515

Order 1122/49 Subscription

ffut.S

Branch PPP Patent,

Uzhgorod, st. Project, 4

Claims (1)

VERTICAL PRISMATIC A HEATER with burners and tangential nozzles of recirculation gases located above them, characterized in that, in order to increase the efficiency of mixing recirculation gases with flue gases, each gas recirculation nozzle is made of two channels with a rectangular cross-section of the channels, and the lower channel is placed horizontally to conditionally surround guests with a diameter equal to (0.1-0.2) L, and the upper one is vertical and tangentially directed to a conditional circle with a diameter of (0.35-0.4) 1, where L is the width of the furnace. fig}