SU708113A1 - Cyclone furnace for open-flame detoxication of waste - Google Patents

Description

one

The invention relates to a device length. waste disposal by thermal methods and can be used in the chemical petrochemical and other industries of the industry, as well as in the communal household for the incineration of industrial and household waste.

A known cyclone furnace for firing decontamination of waste containing a cylindrical chamber, burners, waste feeders and removal of decontamination products 1.

A disadvantage of the known construction is the low degree of trapping T15 in hard parts from flue gases.

The closest to the technical essence and the achieved effect is the LIA furnace for fire disposal of waste, containing a vertical cylindrical combustion chamber with a lid and bottom, a burner, a waste input device, a fairing located in the bottom of the chamber, and a slit for disposal of neutralization products (2).

The disadvantage of the furnace is the inadequate trapping of the molten mineral parts in the swirling flow of the neutralization products due to the location of the gaps on the side surface of the chamber, contributing to the destruction of the flowing film.

The purpose of the invention is to improve the capture of mineral waste cocktails, which is achieved by the fact that in a cyclone furnace for the optic disposal of waste containing a vertical cylindrical combustion chamber with a lid and bottom, a burner, a waste input device, a fairing located in the bottom of the chamber and a slit for product disposal decontamination, the fairing is made in the form of a concentric shell of a combustion chamber of a hexagon nozzle attached by bridges to the shell, and the gaps are made in the bottom of the chamber, between the inner surface of the of cylindrical shell and the outer surface of the radome. The diameter of the fairing is 0.70-- 0.85 of the internal diameter of the combustion chamber and the fairing is provided with a swirler installed in the center. In addition, jumpers can be radial or made in

the shape of curved plates - blades oriented along the twisting of the blades.

Such a congructive solution allows to obtain a high degree of separation of melted particles of mineral components into

the internal cylindrical surface of the combustion chamber due to the removal of the melt from the chamber without destroying the melt film flowing down.

The diameter of the fairing constituting 0.700, 85 of the inner diameter of the combustion chamber provides maximum trapping of mineral components, since when the diameter of the fairing is more than 0.85 of the internal diameter of the chamber, the velocity of the products becomes neutralized and a film of melt breaks in the gap, and when the diameter of the fairing is less than 0.70 the inner diameter of the chamber, the twist of the flow drops sharply which affects the separation properties of the chamber.

Jumpers connecting the cowling to the shell of the combustion chamber can be made in the form of radial or curvilinear plates, curvilinear plates being oriented along the curl of the neutralization products, which improves the conditions for separation of the melted particles and increases their trapping in the furnace volume.

The fairing can be made in the form of a cylindrical nozzle with its swirler placed in the center for feeding into the chamber its early flow of swirling air or a mixture of fuel and air, oriented along the twist of the neutralization products, which helps to maintain optimal conditions of the swirling flow and improve separation.

FIG. 1 shows a longitudinal section of a downward furnace; in fig. 2 - a cross-section of a cyclone furnace along A-A; in fig. Figure 3 shows an embodiment of the jumpers in the form of curved surfaces; on fng. 4 is a longitudinal section of a cyclone furnace with a fairing made with a diverter; in fig. 5 - cross section of a cyclone furnace according to BB.

A cyclone furnace and fire decontamination contains a cylindrical combustion chamber 1 with a lid and a bottom, a burner 2 for supplying the furnace with a mixed air, a waste supply device 3, a slit 4 for disposal of disposal products and a fairing 5 connected to the shell of the combustion chamber with jumpers 6 and equipped with swirl 7.

The cyclone furnace works as follows.

Through the burner 2, a fuel-air mixture is fed tangentially into the cyclone furnace, which forms a swirling high-temperature gas flow of the combustion. Through the waste feeding device 3, waste water is introduced into the cyclone furnace, which evaporates and decomposes in the furnace volume. The mineral components of the waste melt, under the action of centrifugal force, are separated on the walls of the cyclone furnace and flow down in the form of a bald patch.

Neutralization products through slots 4 are discharged from cyclone furnaces.

Mineral coyotent capture is 78%.

Increasing the degree of capture reduces the cost of gas installations and also increases the yield of secondary raw materials of mineral slag and salts for its industrial use.

Claims (4)

1. A cyclone furnace for firing waste disposal, containing a vertical cylindrical combustion chamber with a lid and a bottom, burners, waste entry devices, a fairing and slots for disposal of disposal products, in order to improve the recovery of mineral components of waste, the fairing is performed in the form of a condenser shell of the combustion chamber of a brush-type nozzle attached by bridges to the shell, and the slots are made in the shch {of the combustion chamber between the inner surface of the standard shell and outer surface cowl. 2. The furnace according to claim, characterized in that the diameter of the fairing is 0.7-0.85 of the internal diameter of the combustion chamber. 3. Bake pop characterized in that the jumpers are made radial. 4. Furnace according to claim I, stating that the jumpers were made of Ш1 в, е of curvilinear blade plates oriented along the twisting of the neutralization products. J. Oven stoves. 1 and 2, characterized in that the fairing is provided with a swirler mounted on the certre. Information sources, taken into account in the examination 1. USSR author's certificate No. 498453, Yu1. F 23 G 7/04, 1975. 2. Authors svdedelstvo USSR № 276303, cl. F 23 G 7/06, 1967 (prototype).