SU1089354A1 - Torch-swirling-type furnace - Google Patents

Abstract

A TORCH AND BLUE SURFACE, containing a vertical prismatic combustion chamber with a cold funnel, under which the lower nozzles of the secondary blowing along the slope and the bones of the secondary nozzles located in the same plane of the combustion chamber and the obliquely downward secondary dust nozzles and the upper secondary nozzles are installed. so that, in order to increase efficiency by reducing the removal of fuel into the upper part of the combustion chamber, the lower nozzles of the secondary blow t are directed along the slope of the cold funnel of the wall of the EASURES on which are arranged the upper nozzle secondary blowing, the latter being fitted above the burners and at a distance from the ash hopper, 0,45-0,9 equal distance melzdu bokoW Vym by said combustion chamber walls.

Description

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4 The invention relates to fuel combustion and can be used in power plants. . The known flare-vortex furnace contains a vertical prismatic combustion chamber with pulverized coal burners mounted obliquely on one of its walls and a funnel located in front of the last nozzles for supplying air along the funnel head adjacent to the wall of the gauge, which contains the burners l. The disadvantages of the known furnace are low: the efficiency, due to the relatively high percentage of fuel failure in the slag chest, as well as the ingress of fuel directly into the flow zone of the flue. The disadvantage is partially eliminated in a flare-vortex furnace containing a vertical prismatic combustion chamber with a cold box, under which along the slope there are lower secondary blow nozzles and irradiated coaxially on opposite side walls of the combustion chamber and obliquely-angled coal burners and upper secondary blow nozzles 2j . In this furnace, fuel delivery to the upper part of the combustion chamber is somewhat reduced, but the loss of fuel by carrying out and failure is large, which reduces efficiency. The purpose of the invention is to increase economy. This goal is achieved by that in the flare-vortex furnace, containing a vertical prismatic combustion chamber with a cold funnel, under which there are installations along the slope. lower secondary blowing nozzles, and pulverized burners and upper secondary blowing nozzles located in the same plane on opposite side walls of the combustion chamber and obliquely downwards, lower blowing nozzles, in-stream blowing, are directed along the slope of the cold funnel of the chamber wall on which the upper secondary blowing nozzles are located the latter are installed above the burners and at a distance of 0.45-0.9 from the cold funnel between said side walls of the chamber. Figure 1 shows a firebox, a longitudinal incision; figure 2 - section aa on. figure 1. The torch-vortex trpka contains a prismatic combustion chamber 1 with a cold funnel 2 located in the same plane on opposite lateral steppes 3 and 4 combustion chambers 1 and obliquely downward pulverized burners 5 and upper nozzles 6 of the secondary blowing, which are installed above the burners 5 and -this distance from the cold funnel 2, equal to 0.45-0.9 distances between the side walls 3 and 4. Under the slope 7 of the cold funnel 2 along its slope 8 of the hatch 4 of the chamber 1, the lower nozzles 9 of the secondary 5 are installed. The furnace works as follows. The fuel in the form of an air mixture is introduced into the combustion chamber 1 through the burner 5, where, moving along the slope 8 of the funnel 2, it enters the lower part of the latter and is picked up by the air flow coming out of the lower 9 secondary blowing, as a result of the interaction The air flow from the upper nozzles 6 BTOpii4Horo to blow, as well as from the air mixture from the burners 5 in the cold casing 2 and the bottom of chamber 1, forms a vortex zone in which most of the fuel is burned and unburned.dust particles are carried by the gas stream to the upper part of the combustion chamber 1, where they burn down. Placing the lower nozzles 9 of the secondary blowing along the slope 8 of the cold funnel 2 walls 4 of the chamber 1, on which the upper con / ta 6 of the secondary blowing is mounted, eliminates the failure of the fuel in the slag chest and provides intensive fuel circulation in the lower part of the chamber 1, which increases profitability. Placing the upper nozzles of the secondary blowing above the burners 5 significantly reduces the dust in the upper part of the chamber 1, which also helps to increase efficiency. The greatest effect from the point of view of reducing the dust growth in the upper part of chamber 1 and intensifying the combustion is achieved by installing the upper ones. Eoplel 6 at a distance from the cold funnel 2 equal to 0.45-0.9 spacing between walls 3 and 4,

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Claims (1)

TORCH-VORTEX FUEL containing a vertical prismatic combustion chamber with a cold funnel, under which lower secondary nozzles are installed along its ramp! blasting, and located in the same flat bones on opposite side walls of the combustion chamber and inclined downwardly pulverized coal burners and upper nozzles of the secondary, blasting, characterized in that, in order to increase efficiency by reducing the removal of fuel to the upper part of the combustion chamber, the lower nozzles of the secondary blasting directed along the ramp sloping bottom wall of the chamber, which upper secondary blast nozzles are arranged, the latter being installed above the burner and spaced from the ash hopper equal to _about 0,45-0,9 LKAU said distance ® Vym-mentioned lateral wall of the combustion chamber. z; 00 "E CaO O1 4 ^