A furnace for burning liquid fuel waste

 

(57) Abstract:

The invention relates to a thermal treatment of liquid waste fuels and can be used for neutralization in different areas of the economy. Combustible liquid waste is gasified in the gasification chamber with a lack of air. The furnace is further provided with an outer casing forming with the annular gas supply chamber gap. In the gasification chamber and the annular gap to form a twist in the opposite side eddies that occur in the afterburning chamber, when through the radial holes there takes the tertiary air. The products of combustion are removed through the exhaust tube. 4 C. p. F.-ly, 2 Il.

The invention relates to a thermal treatment of liquid waste fuels and can be used in the design of furnaces for waste treatment for the different sectors of the economy.

Known furnace for burning liquid combustible wastes containing placed centrally in the gasification chamber from the front wall and the secondary combustion chamber of gasification products, nozzles tangential admission of air to the chambers gasification and combustion chamber, a pipe for supplying liquid fuel waste that is connected axially of the Sabbath.

The disadvantages of the known solutions, similar to the above, are reduced reliability, effectiveness and the degree of neutralization of waste.

The technical result, i.e. the aim of the present invention is to improve the reliability, efficiency and degree of neutralization of waste.

The technical result is achieved by the fact that the furnace for burning combustible liquid waste containing placed centrally in the gasification chamber from the front wall and the secondary combustion chamber of gasification products, nozzles tangential admission of air to the chambers gasification and combustion chamber, a pipe for supplying liquid fuel waste, axially connected to the gasification chamber through the end wall, and an exhaust pipe connected to the afterburner, according to the invention, provided with an outer set coaxial with the gasification chamber of the casing forming with the latter an annular gap, attached to the open end to the burning chamber and closed by the wall of the other end of the casing tangentially connected additional nozzles supplying air, moreover, the nozzles tangential admission of air to the gasification chamber and the casing opposite direction.

In addition, Calavera gasification, and this aperture may be placed in the open end of the annular gap. The nozzles supplying air to the casing and the afterburning chamber may be spaced along the longitudinal axis of the furnace, while the inner side walls of the afterburner by butt joining of the housing are made of at least one row of radial holes. Additionally, the annulus can be installed swirler vanes.

The swirling wash of air gasification chamber will provide reliable cooling, while at the same time will be heated secondary air. Spin air into the gasification chamber and the casing in opposite directions, will provide reliable mixing products of the gasification chamber with secondary air from the annular gap, and most importantly, this creates a reverse current of hot gases from the afterburner to the gasification chamber. Aperture setting intensifies the process of mixing the products of gasification and secondary air. Afterburner performed with the inner and outer side walls, between which a gap for the passage of air. The air cools the burning chamber, then through a series of radial holes into the chamber, which also contributes uvelichu; in Fig. 2 is a view along arrow a in Fig. 1.

Furnace for incineration of combustible waste liquid contains the camera 1 post-combustion gasification products from the front 2 and rear 3 end walls. From the rear end wall 3 to the afterburning chamber 1 posted by the gasification chamber 4. To the cameras gasification 4 and the combustion chamber 1 is attached tangentially to the nozzles supplying air, respectively 5 and 6. Through the end wall 7 of the gasification chamber is connected axially to the gasification chamber 4, the supply pipe 8 liquid combustible waste. By the end wall 3 afterburners 1 attached to the exhaust pipe 9. Coaxial with the gasification chamber 4 has an outer casing 10, forming a side wall of the chamber 4 the annular gap 11 with the closed end face wall 12. To the casing 10 tangentially connected to the pipe 13 for supplying air. In the annular gap 11 is additionally placed aperture 14 installed in an internal radial clearance 15 to the gasification chamber 4. The furnace also includes inner and outer side walls 16 and 17 respectively afterburners, and in the inner wall 16 adjacent to the front wall 2 has a series of radial holes 18 for supplying tertiary air from the gap 19, formed the La burning combustible liquid waste is as follows.

Combustible liquid waste pipe 8 is fed to the gasification chamber 4 in which raspisyvayutsya vortex air flow tangentially through the nozzles 5. With the ignition device 20 mixture of waste and air is ignited. Under the action of heat combustible liquid waste is gasified by partial combustion of waste. Moreover, the coefficient of excess air in the gasification chamber 4 is made of 0.3-0.7 depending on the type of waste. Secondary air through the nozzles 13 are served in the annular gap 11, and the nozzle 13 is connected to the casing 10 so that the twist of the vortex in the gap was the opposite direction to the twist of the vortex in the chamber 4. Passing in the gap 11, the air cools the wall of the chamber 4 gasification and heated at the same time. In the afterburning chamber 1 is twisted in the opposite side, the vortices from the gasification chamber 4 and out of the gap 11 intensively mixed, on the border of these vortices formed by the flame front, this creates a reverse current of hot gases from the afterburner 1 to the exit of the gasification chamber.

Setting the aperture 14 with a radial gap 15 creates favorable conditions for further turbulence in the flow after the diaphragm 14. In addition, the gap 15 can be placed updat the walls 16 and 17 of the camera 1 afterburning. The air cools the chamber wall 1 of the combustion chamber, in this heat and through the radial holes 18 is fed into the burning chamber.

Intensive mixing of combustible waste and air into the gasification chamber 4, the organization of a three-stage supply air at a high degree of turbulence in the flow allows, on the one hand, to reduce the formation of oxides of nitrogen, and on the other provides a complete neutralization of liquid waste.

The coefficient of excess air at the outlet from the chamber 1, the combustion chamber is about 1.3 to 1.5. The combustion products are removed from the chamber 1 through the pipe 9.

The invention improves the reliability, efficiency and degree of neutralization of waste by intensive mixing of waste and air and cooling elements air furnace design.

1. A FURNACE FOR BURNING LIQUID COMBUSTIBLE WASTES containing placed centrally in the gasification chamber from the front wall and the secondary combustion chamber of gasification products, nozzles tangential admission of air to the chambers gasification and combustion chamber, a pipe for supplying liquid waste, axially connected to the gasification chamber through the end wall, and an exhaust pipe connected to the afterburner, osim with the latter an annular gap, attached to the open end to the burning chamber and closed by the wall of the other end of the casing tangentially connected additional nozzles supplying air, and the nozzles tangential admission of air into the gasification chamber and the casing opposite direction.

2. Oven under item 1, characterized in that the annular gap further a diaphragm installed in an internal radial clearance to the gasification chamber.

3. Oven PP. 1 and 2, characterized in that the diaphragm is placed in an open ring end gap.

4. Oven PP. 1 to 3, characterized in that the nozzles supplying air to the casing and the afterburning chamber spaced along the longitudinal axis of the furnace.

5. Oven PP. 1 to 4, characterized in that the inner side walls of the afterburner by butt joining of the housing are made of at least one row of radial holes.

 

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