KR100387605B1 - Complete extinction system of combustible waste material for energy recovery - Google Patents

Abstract

The present invention relates to a complete combustion system of combustible waste for energy recovery, comprising: separately installed incinerator and combustion apparatus, and configured to use the waste heat generated in the incinerator and combustion apparatus by exchanging in heat exchanger. It is to provide a device that protects the clean atmosphere by removing dust from the dust collector in the triple dust collector and the harmful gas generated in the incineration and combustion is completely burned by the reburn and discharged to the atmosphere.

Description

Complete extinction system of combustible waste material for energy recovery

The present invention relates to a complete combustion system of combustible waste, and in particular, to configure the heat exchanger in the incineration heat of the incinerator and to install a water-cooled heat exchanger and an air-cooled heat exchanger in the combustion device to reuse the waste heat generated after incineration of waste A system for completely burning a gas generated after incineration.

In the conventional flammable waste incinerator, the upper part of the incinerator is equipped with the combustion material, the lower part is installed the burner, the gas outlet is formed in the middle part, the discharged gas is introduced into the combustion chamber to be reburned, and the burned gas passes through the heat exchanger. Part of the dust is collected while passing through the centrifuge to exchange the dust and to separate the dust, and the dust and dust is collected to increase the weight and volume of the dust while passing through the dust collector such as the cleaning chamber. The gas is configured to remove harmful gases by secondary combustion. Such a configuration has a problem in that waste heat cannot be completely exchanged with only the primary heat exchanger.

In consideration of the above problems, the present invention installs a pipe coil in an incinerator and allows the water to pass through the coil to obtain hot water, and the high heat gas passing through the combustion chamber passes through the waste heat boiler to heat the waste heat boiler. It is an object of the present invention to provide a device capable of obtaining steam and recovering the temperature of the exhausted hot gas from the exhaust gas by exchanging heat while passing the gas passing through the waste heat boiler through an air-cooled heat exchanger.

1 is an overall device diagram of the present invention.

2 is a detailed view of a waste heat boiler

3 is a detailed view of a heat exchanger

[Explanation of symbols on the main parts of the drawings]

11: incinerator 12: burner

13: transfer conveyor 14: inlet

15 boiler 16: heat exchange coil

17: air piping 18: outlet

19: water piping 21: fuel tank

22: combustion chamber 23: preheating tube

24: waste heat boiler 25: heat exchanger

26: centrifuge 27: primary dust collection chamber

28: secondary dust collection chamber 29: spray

31: reburn chamber 32: chimney

33: gas transfer pipe 34: array piping

35: air piping

With reference to the accompanying drawings and embodiments will be described in detail with respect to the present invention.

The present invention provides an incinerator 11 for incinerated flammable waste, a heat exchange coil 16 formed in close proximity to the burner 12 in the incinerator 11, and a preheating tube 23 for preheating the gas generated in the incinerator 11; The secondary combustion chamber 22 for secondary combustion of the gas preheated in the preheating tube 23, the water-cooled waste heat boiler 24 and the waste heat boiler 24 for lowering the high temperature gas temperature in the secondary combustion chamber 22. Air-cooled heat exchanger 25 for secondaryly lowering the temperature of the gas lowered to a constant temperature) and a centrifuge 26 for lowering the moving speed of the gas lowered in the heat exchanger 25 and separating dust. When the gas passing through the accelerator blower 60 and the accelerator blower 60 is accelerated by the spray 29 to accelerate the movement speed of the gas remarkably dropped in the vortex phenomena of the centrifugal separator 26, Promote aggregation The key is agglomerated in the primary dust collecting chamber 27 and the primary dust collecting chamber 27 to remove dust, harmful gas, ammonia and sulfur by reducing the floating speed by spraying water and caustic soda. The third combustion chamber 31 which burns the gas which passed through the secondary dust collection chamber 28 and the said secondary dust collection chamber 3rd, and the chimney 32 which exhausts the gas completely burned from the said tertiary combustion chamber 31 is discharged. It is composed of

1 is a view showing the operation process as an overall view of the present invention, Figure 2 is intended to show the configuration of the waste heat boiler in detail and Figure 3 is for showing the configuration of the heat exchanger in detail.

The incinerator 11 of a predetermined size is installed starting from the front of the space in which the incinerator is secured. The outlet 45 is formed in the lower portion of the incinerator 11 to discharge the ash of the burned waste, and the mesh 44 is formed just above the outlet 45, and an air pipe 17 is connected to one side thereof and the other. A heat exchange coil 16 is formed at one side, and a burner 12 for burning fuel supplied from the fuel tank 21 is formed as shown in FIG. 1, and an upper portion of the incinerator 11 is a screw conveyor 13. The waste inlet 14 is formed, and as shown in FIG. 1, the inlet 18 of the combustion gas is formed in the upper portion of the incinerator 11.

One side of the incinerator 11 is formed with a boiler 15 for using high temperature hot water by heat exchange in the heat exchange coil 16 in the incinerator 11.

The combustion gas outlet 18 is connected to the secondary combustion chamber 22, the air pipe 17 for injecting air into the combustion chamber 22 inlet is linked, and the fuel pipe 46 for injecting fuel is linked. In order to preheat the fuel by mixing a portion of the gas combusted in the combustion chamber 22 with the fuel in the fuel pipe 46, the preheating pipe 23 is connected to the fuel pipe 46 in association with the rear gas pipe 33. The preheater 23 is provided with a blower 47 for forcibly blowing preheating gas. The hot gas burned at a high temperature in the secondary combustion chamber 22 passes through the waste heat boiler 24 via the gas transfer pipe 33, and a plurality of pipes are arranged in the waste heat boiler 24 at regular intervals in FIG. 2. As shown in the drawing, an array pipe 34 is arranged closely, and the array pipe 34 is connected to the water tank 80 so that water is embedded, so that heat of hot gas passes through the array pipe 34. It is conducted to the array pipe 34 to generate steam.

As described above, the gas dropped to a constant temperature by water cooling of the waste heat boiler 24 passes through the heat exchanger 25.

The inside of the heat exchanger 25 is a plurality of pipes are closely arranged as shown in Figure 3 at regular intervals to form an air pipe (35) and the gas pipe 33 is the arranged air pipe (35) Is associated with.

As described above, the hot gas passing through the plurality of array air pipes 35 is radiated from the array air pipes 35. When air is injected into the heat exchanger 25 to be radiated, the temperature of the air rises and high temperature air can be used.

Since the hot gas passing through the heat exchanger 25 is deprived of a lot of heat while passing through the waste heat boiler 24 and the heat exchanger 25, the gas moving the gas pipe 33 maintains a lowered temperature. As the gas passes through the centrifuge 26, the gas moving speed decreases, and the gas rotates, so that the dust in the gas hits the inner wall of the centrifuge 26 by the centrifugal force.

As described above, the dust hit the wall of the centrifuge 26 is collected in the dust collector (90). As the gas rotated in the centrifuge 26 as described above, the movement speed is significantly lowered so that the exhaust speed of the gas is lowered, so that an accelerated blower 60 is formed in the gas moving tube 33 linked to the centrifuge 26. This increases the speed of gas movement. As described above, the gas passing through the blower 60 passes through the primary dust collector 27, and the gas moving tube 33 is coupled to the lower portion of the primary dust collector 27 and discharged as shown in FIG. 1. 33 is coupled to the upper portion of the primary dust collector 27, the liquid spray 29 to clean the dust surface of the gas inside the primary dust collector 27 to promote the aggregation of dust particles to remove dust and harmful gas (29) Is formed.

The secondary dust collector 28 is formed in association with the primary dust collector 27, and the secondary dust collector 28 is also formed in the same shape as the primary dust collector 27, and is formed by the liquid of the spray 29 inside thereof. The dust collector 27 is configured to remove the dust and harmful gas that could not be removed.

As described above, the movement speed of the gas is changed at a low speed by the spray 29 of the primary and secondary dust collectors 27 and 28, and the gas is moved to the tertiary combustion chamber 31.

The gas transferred to the tertiary combustion chamber 31 is completely burned by the combustion of the burner 70 and exhausted to the chimney 32.

In an embodiment,

Injecting flammable waste into the inlet 14 and operating the screw conveyor 13 puts the waste into the incinerator 11.

When the waste is injected into the incinerator 11, the valve of the fuel tank 21 and the air valve of the air pipe 17 are opened to operate the burner 12. A lower portion of the incinerator 11 forms a mesh 44 supporting the waste to be injected, and the mesh 4 is connected to the air pipe 17.

The heat exchange coil 16 is formed on one side of the mesh 44 and is connected to the boiler 15 by the water pipe 19 and connected to the water tank 80.

The purpose of the heat exchange coil 16 as described above is that the heat radiated or conducted under the waste as the waste is burned in the incineration chamber 11 corresponds to the waste heat, so that the heat of the heat exchange coil 16 increases the temperature of the water to the boiler 15. The product was stored in the oven and warmed as needed. When the combustion of waste incinerator occurs, when unstable combustion occurs and the combustion time elapses for a predetermined time, the pressure in the incinerator 11 is increased, and the gas moves to the secondary combustion chamber 22 through the outlet 18. At the inlet of the secondary combustion chamber 22, the mixed fuel pipe 48 and the air pipe 17 are connected to the secondary combustion chamber 22 and supplied to the secondary combustion chamber 22, and the mixed fuel pipe 48 is a rear gas moving tube of the secondary combustion chamber 22. The preheating tube 23 linked at 33 is combined with the fuel tube 46 to raise the temperature of the fuel so that the fuel is completely burned. The preheating tube 23 is supplied with the hot gas by the blower 47. Forced transfer, and preheating is stopped when the temperature of the mixed fuel pipe 48 rises to a certain temperature, that is, 500 ℃ or more.

In the secondary combustion chamber 22, hot gas passes through the waste heat boiler 24 via the gas pipe 33.

As shown in FIG. 2, the waste heat boiler 24 has a plurality of array pipes 34 formed therein and water flows through the array pipes 34.

As the hot gas passes through the array pipe 34 formed as described above, the heat is exchanged, and since the steam of high heat is generated in the array pipe 34, it is used for heating. When the pressure above the proper pressure is generated, the steam is automatically exhausted to maintain a constant internal pressure, and the exhaust steam is injected back into the waste heat boiler 24 by using the strong blower (49). The calories were not discarded.

The water used for the waste heat boiler 24 used the water of the water tank (80).

In the waste heat boiler 24, the gas temperature is lowered to a constant temperature by heat exchange, thereby passing through the heat exchanger 25.

As shown in FIG. 3, the heat exchanger 25 has a multi-row air pipe 17 formed therein, and the hot gas introduced into the heat exchanger 25 is introduced into the air pipe 17. In the lower portion of the machine 25, the outside air flows through the air pipe 17, passes through the dense air pipe 17, exchanges heat, and is discharged to the air discharge pipe 50 to be used for heating.

As described above, since the gas passing through the heat exchanger 25 exchanges a large amount of heat, the gas temperature decreases and flows into the centrifuge 26.

The gas flowing into the centrifuge 26 is rotated and the rotating gas is collected by the dust collector 90 while the dust contained in the gas strikes the inner wall of the centrifuge 26 by centrifugal force.

Since the gas passing through the centrifuge 26 is rotated in the centrifuge 26, the traveling speed is significantly reduced.

In order to accelerate the speed of the reduced gas, an acceleration blower 60 is installed in the gas pipe 33 between the centrifuge 26 and the primary dust collecting chamber 27 to accelerate the gas moving speed.

Gas passing through the accelerated blower 60 flows into the primary dust collecting chamber 27. The inflow gas moving tube 33 coupled to the primary dust collecting chamber 27 is coupled to the lower portion of the primary dust collecting chamber 27 and the gas moving tube 33 through which the gas is discharged from the primary dust collecting chamber 27 is the primary. It is coupled to the upper part of the dust collecting chamber 27 and the spray 29 is formed in the upper part of the primary dust collecting chamber 27. The spray 29 forms a liquid film and bubbles and cleans the gas containing dust to aggregate the particles. To promote the removal of dust, HCL and SO from the gas.

The gas passing through the primary dust collecting chamber 27 is introduced in the same manner as the second dust collecting chamber 28 into the primary dust collecting chamber 27 and aggregated in the primary dust collecting chamber 27, but is removed. Water and caustic soda can be sprayed on the dust and harmful gas, HCL and SO, which are not used to increase the surface area, and the gas moving speed is enhanced to sufficiently remove the dust, harmful gas, HCL and SO.

Dust, harmful gas, HCL removed in the primary dust collecting chamber 27 and the secondary dust collecting chamber 27 as described above. Fillings such as SO were treated in the wastewater treatment plant 51.

As described above, the gas passing through the primary and secondary dust collection chambers 27 and 28 is completely combusted by the gas combustion of the burner 70 while passing through the tertiary combustion chamber 31 and exhausted to the chimney 32. Does not pollute the atmosphere.

The flammable waste complete combustion system for energy recovery according to the present invention is configured to fully utilize the waste heat generated after combustion of the waste as well as the complete combustion of the combustible waste as energy, and under the waste heat generated from the incinerator first, that is, under the burner The amount of heat generated can be used as energy, and the energy can be recovered throughout the third stage by recovering the energy of the high temperature generated after combustion of the combustion chamber. can do.

Claims (3)

(correction) In a complete combustion system for incineration of combustible waste, a heat exchange coil 16 formed under the burner 12 to heat the waste heat generated under the burner 12 of the incinerator 11 and store it in the boiler 15; And a waste heat boiler (24) formed at the rear of the combustion chamber (22) and configured to heat-exchange hot gas heat in a water-cooled manner , and to recover steam exhausted at a high temperature and high pressure to the blower (49). A heat exchanger 25 formed so as to heat-exchange the high-temperature gas heat passing through the air 24 by air cooling, and a centrifuge 26 in which the gas passed through the heat exchanger 25 may fall out and be collected by centrifugal force. ), A blower (60) formed to accelerate the gas movement speed lowered in the centrifuge (26), and the gas passing through the blower (60) by spraying bubbles and liquid phase, and cleaning the dust particles, Cohesion The primary dust collector 27 to apply and collect the dust, the secondary dust collector 28 to increase the amount of dust by increasing the surface of the dust particles and the flow rate of the dust particles by spraying water and caustic soda, and the gas is collected Combustible waste complete combustion system for energy recovery, characterized in that consisting of a tertiary combustion chamber 31 to remove the harmful gas by burning. According to claim 1, the waste heat boiler 24 is composed of an array pipe 34 is densely arranged therein, the array pipe 34 is connected to the water tank 80, the water is circulated and the heat pipe by hot gas ( When steam is generated at 34 and the internal pressure of the array pipe 34 rises, steam is discharged by the automatic valve, and the discharged steam is reflowed into the waste heat boiler 24 by the powerful blower 49. Flammable waste complete combustion system for recovery. The heat exchanger (25) according to claim 1, wherein the heat exchanger (25) is formed of an air pipe (35) that is a multi-row pipe that is densely arranged therein, and the air pipe (35) is connected to the gas pipe (33). Complete combustion of flammable waste for recovery, characterized in that the external air is introduced into the air pipe 17 formed on the lower side and the air introduced to the upper side of the heat exchanger 25 is discharged to the air discharge pipe 50 at a high temperature. system.