SU879142A1 - Fire box - Google Patents

Description

The invention relates to a device for burning fuel and can be used in the boiler room of thermal power plants.

Fireboxes containing pre-furnaces are known, which are connected to the lower part of the rectangular vertical combustion chamber through its opposite side walls 1.

The disadvantage of these devices I | is the reduced efficiency due to the large unevenness of temperatures at the exit from the combustion chamber, which leads to overheating of the heating surfaces of their slagging.

The aim of the invention is to increase the efficiency of work by reducing the unevenness of the temperature in the outlet of the combustion chamber.

This goal is achieved by the fact that the combustion chamber C1a: bzhena dbntraln 1m bottom protrusion, equidistant and parallel relative to the side walls of the chamber and having a width of 0.4-0.8 from the depth of the latter.

FIG. 1 shows the proposed furnace, a longitudinal section; in fig. 2 shows section A-A in FIG. one.

The firebox contains predioikm 1 with burners 2, connected to the lower part of the direct 1X) vertical combustion chamber 3.

(54) TOPKA

Its opposite side walls are 4. The combustion chamber 3 is provided with a central bottom protrusion 5 and heating surfaces 6. The bottom one is a protrusion 5. Equivalent to

5 and is parallel to the side walls 4 of the chamber 3. And has a width (B) corresponding to 0.4-0.8 of the depth C of the chamber 3. The furnace works as follows. Air / fuel mixture through burners

10 2 enters the furnace 1, where the mixture burns. The partially burned out combustion products are sent to the combustion chamber 3, where fuel is burned out and the combustion products are cooled by heating surfaces 6. The combustion products, when entering chamber 3, are initially divided into two symmetric streams at the top portions of chamber 1 are mixed.

20

Studies have shown that the execution of the under-protrusion 5 with a width of 0.4-0.8 from the depth of the combustion chamber 3 contributes to the occurrence of transverse flows, which ensure efficient rotation of the combustion products in the upper part of chamber 3, which leads to , to a decrease in the nonuniformity of the temperature at the outlet of the latter. At the same time, the efficiency of tosh is increased due to a decrease in slag slag and burnout of heating surfaces 6.

Formula | Invention "and

A furnace containing pre-furnaces connected to the lower part of the rectangular vertical combustion chamber –qeipes has its opposite side walls, which is so that, in order to increase the efficiency of operation, to reduce temperature irregularities at the exit of the combustion chamber, the latter a central bottom protrusion equidistant and parallel to the side walls of the kaider and having a width of 0.4-0.8 of the depth of the latter. /

The source of information taken into account in the examination:

1. Marshak Yu. L. Furnace devices with vertical cyclone furnaces, M.-L., “Energie, 1966, p. 21, Fig. eleven.

Claims (1)

Claim A furnace containing pre-furnaces connected to the bottom of a rectangular vertical combustion chamber through its opposite side walls, characterized in that, in order to increase efficiency (work by reducing temperature unevenness at the exit of the combustion chamber, the latter is equipped with a central hearth protrusion, equidistant and parallel to the side walls of the chamber and having a width of 0.4-0.8 of the depth of the latter. 5 / Source of information taken into account during the examination: 1. Marshak Yu. L. Furnace devices with vertical cyclone central furnaces, 10 M. — L., “Energy”, 1966, p. 21, fig. eleven.