SU1430674A1 - Furnace - Google Patents

Abstract

The invention may be used in thermal power plants. The aim of the invention is to increase the efficiency of the firebox by (. Low burning). In the corners of the vertical Ka.ibHoii square combustion chamber 1 with a volley relative to its walls are placed. air nozzles 5 and nozzles 6 air mixtures, located around the height and relative to each other. Nozzles 5 pa.meuieHiji in camera 1 yr / iax and directed along screens 3, and seat 6 and i angled I but the other side of I OH.i is 5 appropriate screens and directions. along the bisector of the angle between the screens and chambers 2. Separate input of fuel and and) zduukha prevents the formation of nitrogen oxides, 1ОЗ- before oxygen supply, to transfer coal into semi-coke, burning of which is more efficient. The tangential position of the screens excludes the coating of the chamber, and the achmatical position of the nozzles creates favorable conditions for hot flue gases in (jiaKC. Ia. 3 and h. S СО 05

Description

The invention relates to the combustion technology: 11 and only can be used on solid power plants.

The purpose of the invention is to increase eco-humism by reducing underburning.

FIG. I depicts a firebox, longitudinal, and incision; FIG. 2 is a section A-L in FIG. I; in fig. 3 shows a section BB in FIG. 2

The furnace contains a square (with bevelled corners for installing nozzles) vertical combustion chamber 1 with shielded walls 2 and double-sided screens 3 placed in each corner of chamber I tangentially to the conventional circumference and with a gap 4 relative to wall 2 the entire height of the firebox. Two-color screens 3 1 are installed between the air nozzles 5 | and the nozzles 6 of the air mixture. The nozzles 5 are installed along the screens 3 on one side, on the other side between the walls 2 of the chamber 1 and the screens 3, the nozzles 6 of the aero-mirrors are installed, directed along the bisector of the angle between the walls 2 and the screens 3. Son l a 5 and 6 are located along the river bed and shifted in height | relative to each other. Between the ends 1: | of the screens 3 and the edges of the adjacent screens 3 |, vertical aisles 8 are made to the whole | height of the camera 1. The angle between the screens 3 and the walls 2 can be 10-30 °, which contributes to the placement of the torch with an opening angle of 10-30 In this space, no pressure is applied to the walls 2 of the firebox, as a result of which the slab-free operation of the chamber 1 C1 0rani is ensured.

The furnace works as follows.

The fuel in the form of dust after a dust collector (not shown) is fed without air into the combustion chamber 1 through the nozzles 6 of the air mixture. Due to the ejection, flue gases and part of the air from neighboring nozzles 5, which are located in one yr.iy of the combustion chamber, are sucked into the torch root. The fuel (moving between the walls 2 and double-colored screens 3) is subjected to heat treatment, as a result of which 1-basics are extracted from the fuel. When the edges of the opposite screen 3 are reached, the fuel is converted to char.

which erupts into the air jet coming from the nozzles 5, oh.shzh. fusing the edges of the screen 3. The transverse air curtain turns the torch into the central zone of the combustion chamber (1i, where the fuel starts

rotate in a horizontal vortex, which is initiated by jets of air from the nozzles 5, tangential to the vortex. Koksik particles burn out in an upward vortex motion, and underburning is dropped at the top.

parts of chamber 1 into aisles 8 and falls again on. nozzles 5. Thus, the drying is a vertical circulation of underburning. Separate injection of fuel and air prevents the formation of nitrogen oxides, allows for up to

coal course in semi-coke whose combustion

 More effective in many ways. Spreading screens 3 from cTei KH 2 under the condition (tangential positioning of screens 3) makes it possible to exclude cracking of windows 2.

Chess arrangement of nozzles b and b

creates favorable for the ejection of hot flue gas beams with the root of the torch, and the tangential passages 8 between the screens provide a horizontal twist in the center of the combustion chamber 1 П П Я.

Claims (1)

Invention Formula The firebox containing a vertical square combustion chamber with Rus of the rear nozzles and two-light aero mix nozzles screens placed in the corners of the chamber with a gap relative to its walls, and the EOZ-duct nozzles are located at the corners of the chamber and directed along the screens, which in order to economize the number of burns, the screens are installed tangentially to the conditional circle, and the air mixture nozzles are placed and the corners of the combustion chamber on the other side of the air nozzles of the respective screens li are directed along the bisector of the angle between these screens and the walls of the chamber, and the Russ of the nozzles of the mixture of the mixture is height in relation to the Rus soi.p. fa.2