CN201368451Y - Cooled combustion equipment for forced ventilation of wall body - Google Patents

Abstract

The utility model relates to a wall forced ventilation cooling combustion equipment. The device has a cylindrical combustion chamber, and the inner wall of the combustion chamber is covered with refractory materials and leaves gaps; the entrance of the combustion chamber communicates with one end of the air distribution device, and one end is equipped with a blower, from the entrance of the blower to the entrance of the combustion chamber , respectively isolate the central area, the middle area and the peripheral area. The central area is equipped with an air distributor and a fuel nozzle, and the air outlets in the central area and the middle area are all connected with the combustion chamber. The device can be A strong combustion flame is generated through strong mixing, so that the fuel can be fully burned, and at the same time reduce the radiation of the heat preservation flame to the inner wall of the combustion chamber, and the emission of NOx and other pollutants is less, not only can reduce the thickness of the refractory material to save a lot of refractory material, And can reduce the refractoriness of the refractory material.

Description

Wall forced air cooling combustion equipment

technical field

The utility model relates to wall forced ventilation cooling combustion equipment in the technical fields of fuel combustion, graded air distribution, furnace heating, material preheating, refractory heat preservation materials, and air isolation cooling.

Background technique

The current starting heating devices of circulating fluidized bed boilers, incinerators and heating furnaces rely on oil guns (or gas spray guns) to spray fuel into the combustion chamber for combustion, and the combustion air is sent in from around the burner spray gun, and strong mixed combustion produces Very high flame temperature, in order to reduce the temperature of the outer wall of the combustion chamber, a thick refractory insulation material is generally laid on the inner wall of the combustion chamber. Such a combustion chamber needs to use a large amount of refractory insulation materials, and the initial equipment investment is very large; and because the edge of the flame may scour the inner wall of the combustion chamber, the service life of the refractory materials is usually very short.

Contents of the invention

In order to overcome the problems existing in the combustion of the combustion chamber, the utility model provides a wall forced ventilation cooling combustion equipment. The device can generate a strong combustion flame through strong mixing, so that the fuel can be fully burned, and at the same time reduce the radiation of the heat preservation flame to the inner wall of the combustion chamber, and the emission of pollutants such as NOx is less, not only can reduce the thickness of the refractory material to save a lot Refractory materials, and can reduce the refractoriness of refractory materials.

The technical scheme of the utility model to solve the technical problem is: the device has a cylindrical combustion chamber surrounded by steel plates, and the inner wall of the combustion chamber is laid with refractory materials with gaps; the inlet end of the combustion chamber and one end of the air distribution device The air distribution device has an over-closed shell, and the other end is equipped with a blower. From the entrance of the blower to the entrance of the combustion chamber, two circles of isolation steel plates are used to isolate the central area, the middle area and the peripheral area. In the isolated area, the central area is equipped with an air distribution device and a fuel nozzle. The axial periphery of the central area is the middle area. The air outlets in the peripheral area are respectively connected with the refractory gap and the combustion chamber, and the air is supplied through the air distribution area of the air distribution device.

The beneficial effects of the utility model are: the device can generate a strong combustion flame through strong mixing, so that the fuel can be fully burned, and at the same time reduce the radiation of the heat preservation flame to the inner wall of the combustion chamber, and the discharge of pollutants such as NOx is less, not only can Reduce the thickness of the refractory material to save a lot of refractory material, and can reduce the refractoriness of the refractory material.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Accompanying drawing is the structural representation of the utility model.

In the figure 1. Fan, 2. Air volume adjustment plate, 3. Central area, 4. Air distribution device, 5. Fuel nozzle, 6. Refractory material, 7. Combustion chamber, 8. Gap, 9. Combustion chamber, 10. Distribution Wind device, 11. middle zone, 12. peripheral zone.

Detailed ways

In the figure, the device has a cylindrical combustion chamber 7,9 surrounded by a steel plate, and the inner wall of the combustion chamber 7,9 is covered with a refractory material 6 with a gap 8; One end of the device 10 is connected. The air distribution device 10 has a closed shell, and the other end is equipped with a blower 1. From the entrance of the blower 1 to the entrances of the combustion chambers 7 and 9, two rings of isolation plates are used to isolate the center respectively. District 3, three isolation areas of middle area 11 and peripheral area 12, its central area 3 is equipped with air distribution device 4 and fuel nozzle 5, and the periphery of its central area 3 axial direction is intermediate area 11, and its central area 3 and middle The air outlets of the district 11 are all connected with the combustion chambers 7, 9, and the periphery of the middle area 11 is a peripheral area 12, and the air outlets of the peripheral area 12 are respectively connected with the refractory material slit 8 and the combustion chambers 7, 9, and pass through the air distribution device 10 The air distribution zone supplies air. Among them, the combustion chamber is in the center of the combustion chamber, and the flame is stabilized by the recirculation zone generated by the air distribution device, and the mixed air is diverted by the isolation plate of the burner on the periphery to form a stable annular airflow to maintain the shape of the flame and burn The outermost cooling air in chambers 7 and 9 wraps the high-temperature flame inside to isolate the radiation of high-temperature flue gas to the inner wall of combustion chamber 6. At the same time, the peripheral wind passes through the gap to form an isolation layer to prevent heat transfer to the outer shell of the combustion chamber .

Claims (1)

1. Wall forced ventilation cooling combustion equipment, the device is mainly composed of fan (1), air volume adjustment plate (2), air distribution device (4), combustion nozzle (5), refractory material (6), combustion chamber (7) , 9), the air distribution device (10) is composed of; it is characterized in that: the device has a cylindrical combustion chamber (7,9) surrounded by steel plates, and the combustion chamber (7,9) inner wall is laid with gaps (8 ) refractory material (6); the inlet port of the combustion chamber (7, 9) communicates with one end of the air distribution device (10), the air distribution device (10) has a closed shell, and the other end is equipped with a blower (1), from the entrance of the blower (1) to the entrance of the combustion chamber (7, 9), two circles of isolation steel plates are used to isolate the central area (3), the middle area (11) and the peripheral area (12) respectively. Isolation area, its central area (3) is equipped with air distribution device (4) and fuel nozzle (5), the axial periphery of its central area (3) is the middle area (11), its central area (3) and the middle The air outlets of the district (11) are all connected with the combustion chambers (7, 9), and the periphery of the middle district (11) is the peripheral district (12), and the air outlets of the peripheral districts (12) are connected with the refractory material slit (8) respectively. It communicates with the combustion chamber (7, 9), and sends air through the air distribution zone of the air distribution device (10).

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