SU1343183A1 - Combustion apparatus - Google Patents

Abstract

The invention relates to a power system and m. used in fuel combustion at thermal power plants. EFFECT: higher efficiency. Combustion chamber (CS) 1 with separator (C) 3 and heat exchanger (TO) 6 has a common wall 8, a SCLT is a common transverse wall 9. TO 6 is communicated with windows 10 and 11 located in wall 8, with CS 1, and windows 12 walls 9 with a 5 C 3 bunker. Inside C 3, a connecting duct 2 is formed with the formation in its upper part of the sinuses 13, which have openings 4 for gas withdrawal. The output end of the duct 2 is equipped with air nozzles whose axes are directed towards its axis. C 3 is equipped with fencing partitions located under the flue 2, В V $ (L from d from 00 to 10 gz

Description

1343

wall 16 C 3 has a channel, the upper end of which communicates with COP 1 and the lower end with a bunker 5 C 3. Circulating particles and fuel, combustion, are carried away by a gas flow through gas duct 2 to C 3, in which gas is separated from particles . The flue gases are discharged through the windows A to the waste-heat boiler, and the circulating particles are poured into the bunker 5, the partitions reduce the outflow of chambers.

This invention relates to fuel combustion and can be used in thermal power plants.

The purpose of the invention is to increase efficiency.

Fig, 1 shows a firebox, a longitudinal section; in fig. 2 - the same, option; in fig. 3 - node I in figure 2; in fig. A - node II in FIG. 2; in fig. 5 shows section A-A in FIG. 2

The furnace contains a combustion chamber 1 with a circulating bed of dispersed particles, which is connected via a connecting duct 2 to a separator 3, made in the form of a vertical shaft, equipped with windows 4 for gas withdrawal and a collecting bin 5, and a heat exchanger 6 under surface separator 3 heating. The combustion chamber 1 with the separator 3 and the heat exchanger 6 has a common wall 8, and the separator 3 and the heat exchanger 6 have a common transverse wall 9. The heat exchanger 6 is connected by the bypass windows 10 and 11 located in the wall 8 with the combustion chamber 1,. and the bypass window 12, located in the wall 9 - with the bunker 5 of the separator 3. The connecting duct 2 is led inside the separator 3 with the formation in its upper part of the sinuses 13, in which the windows 4 are located for the withdrawal of gas. The output end of the duct 2 is equipped with air nozzles 14, the axes of which are directed towards its axis. The separator 3 is equipped with baffles 15, located under the flue 2. In the wall 16 of the separator 3, located

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particles with flue gases. At e and J, the air jets flowing out of the nozzles of the flue 2 contribute to such removal. From the bunker 5 through the window 12 there is a dispersion of HbDi material enters TO 6, the Cooled dispersed material 1al and the air through the bypass windows 10 and 11, respectively, enter CS 1. Circuli dispersed material provides low-temperature solid fuel combustion, 3 Cp. f-ly, 5 ill.

0

five

20

25

thirty

35

opposite wall 8, which is common with combustion chamber 1, channel 17 is made, the upper end of which is connected to combustion chamber 1, and the lower end is connected to the hopper 5 of separator 3, rail 18 is attached to the upper end of channel 17. Combustion chamber 1 and heat exchanger 6 are equipped with air distribution grids 19 and 20, under which blown ducts 21 and 22 are placed, connected to fans 23. Combustion chamber 1 is connected to feeder 25 coal via feeder 24. The walls of the combustion chamber 1, the separator 3 and the heat exchanger 6 can be cooled. Air nozzles 26 can be installed at the top of the wall B. Nozzles 14 and 26 are connected to the collectors 27.

The furnace works as follows. The circulating particles and fuel, which is metered from the bunker 25 by the feeder 24, the combustion, is carried by a high-speed gas flow through the duct 2 to the separator 3, in which the gas is separated from the particles by inertial forces. The flue gases are led out through the windows 4 to afterburning and cooling to the waste heat boiler, and the circulating particles are poured into the bunker 5. Part of the particles are trapped by the partition 18 and the channel 17 is also poured into the bunker 5. The baffle walls 15 reduce the removal of particles from the flue gases. The jets of air flowing out of the nozzles 14 also contribute to the reduction of particle removal. From the hopper 5 through the overflow valve 12

the dispersed material enters the heat exchanger 6, in which it is fluidized by air entering through the grid 20 from the box 22 and is cooled by the heating surfaces 7. The cooled dispersed material and air through the bypass ports 10 and 11, respectively, enter the combustion chamber 1. The air for combustion and fluidization enters the combustion chamber 1 through the grate 19 of the duct 21. The circulation of dispersed material provides low-temperature combustion of solid fuels.

Claims (4)

1. A furnace containing a circulating bed of dispersed particles, communicating via a connecting duct with a separator, made in the form of a vertical shaft, equipped with openings for gas withdrawal and a collecting hopper, and a boiling layer heat exchanger underneath the separator, which is connected to the bypass ports with a combustion chamber under the separator and separator bin, characterized in that, in order to increase the economical 0 five 0 5 p The combustion chamber with the separator and the heat exchanger has a common vertical wall, which also have a common transverse wall, with the heat exchanger bypass windows located in its walls, common with the combustion chamber and the separator respectively, and the connecting duct is led inside the separator to form in its upper parts of the sinuses in which the windows are located for gas output, 2. A furnace according to claim 1, characterized in that the outlet end of the connecting duct is provided with air nozzles, the axes of which are directed towards its axis, 3. A furnace according to claim 1, characterized in that the separator is equipped with fencing partitions located under the connecting duct, 4. Topka pop, 1, characterized in that in the separator wall located opposite the wall, common to the combustion chamber, a channel is made, the upper end of which communicates with the combustion chamber, and the lower end of the channel communicates with the collecting hopper. .one  , /, Yu 7 20 ;, Phi. 2 Ft / f- / 1 5