Waste incineration waste heat boiler with newly-added convection bank

Abstract

The utility model relates to the technical field of waste incineration equipment, in particular to a waste incineration waste heat boiler with a newly added convection bank, which comprises a first fixing frame, a second fixing frame, a combustion boiler and a waste heat recovery mechanism, a combustion boiler is arranged in the second fixing frame; a combustion chamber and a smoke exhaust chamber are arranged at the upper part of the combustion boiler; the smoke exhaust chamber is communicated with the waste heat recovery mechanism through a fan and a first gas guide pipeline at the upper part; the waste heat recovery mechanism comprises a smoke pipeline, a sealing cover, a first convection bank, a second convection bank, a communicating pipeline and an exhaust pipeline, the smoke pipeline is of a rectangular cavity structure with one end open, and the first convection bank is communicated with the second convection bank through the communicating pipeline to form an annular flow guide structure. The waste incineration boiler is used for solving the problem that heat energy cannot be recycled and is wasted in the flue gas emission process of an existing waste incineration boiler.

Description

Technical Field

[0001] The utility model relates to the technical field of waste incineration equipment, in particular to a waste incineration waste heat boiler with an additional convection tube bundle. Background Art

[0002] With the acceleration of the urbanization process and the improvement of people's living standards, the amount of waste generated is increasing day by day. The traditional waste landfill method not only occupies a large amount of land resources, but also may cause environmental pollution and groundwater pollution and other problems. Based on this, the existing treatment equipment generally adopts the waste incineration method to treat. The waste incineration waste heat boiler, as an important part of the waste incineration power generation system, can convert the high-temperature heat energy generated by waste incineration into steam or electric energy, realizing the reduction, harmlessness and resource utilization of waste.

[0003] Although the existing waste incineration boilers can realize the function of waste incineration, there is a lot of heat in the flue gas after combustion. This direct flue gas treatment method will cause a large amount of waste of heat energy. Based on this, we designed a waste incineration boiler with a convection tube bundle structure, which can recover the heat energy in the flue gas and realize the integration of combustion, ash removal and heat energy recovery. Summary of the Utility Model

[0004] Aiming at the technical problems existing in the background art, the utility model provides a waste incineration waste heat boiler with an additional convection tube bundle, which solves the problem that the heat energy cannot be recovered during the flue gas emission of the existing waste incineration boiler, resulting in waste of heat energy.

[0005] The technical implementation scheme of the utility model is as follows:

[0006] A waste incineration waste heat boiler with an additional convection tube bundle, including a first fixing frame, a second fixing frame, a combustion boiler and a waste heat recovery mechanism. The first fixing frame is a rectangular frame structure, and the second fixing frame is arranged on the upper part of the first fixing frame. The combustion boiler is arranged inside the second fixing frame; a combustion chamber and a smoke exhaust chamber are arranged on the upper part of the combustion boiler. The smoke exhaust chamber is connected to the waste heat recovery mechanism through a fan and a first air guide pipe on the upper part; the waste heat recovery mechanism includes a flue gas pipe, a sealing cover, a first convection tube bundle, a second convection tube bundle, a connecting pipe and an exhaust pipe. The flue gas pipe is a rectangular cavity structure with one end open, and the first convection tube bundle is arranged inside the flue gas pipe. The first convection tube bundle is connected to the second convection tube bundle through a connecting pipe to form an annular diversion structure. A sealing cover and an exhaust pipe are arranged on the upper part of the flue gas pipe.

[0007] Optionally, the first air guide pipe is connected to the bottom air inlet of the flue gas pipe, and an air outlet is arranged on the upper part of the flue gas pipe, and a second air guide pipe is arranged on the air outlet.

[0008] Optionally, a water inlet and a water outlet are provided on the flue gas pipeline, and the water inlet is communicated with the first convection tube bundle through a water inlet pipeline, and the water outlet is communicated with the second convection tube bundle through a water outlet pipeline.

[0009] Optionally, a feeding support is arranged inside the first fixing frame, a conveying belt is arranged inside the feeding support, and a first driving motor is arranged at one end of the feeding support.

[0010] Optionally, the combustion boiler is a rectangular cavity structure with an open upper part. A feeding baffle is arranged at the opening of the combustion boiler, a feeding port is arranged on the feeding baffle, and the feeding port is connected with the feeding mechanism.

[0011] Optionally, the feeding mechanism includes a feeding support, a feeding belt, a feeding hopper and a second driving motor. The feeding belt is arranged inside the feeding support, and a second driving motor is arranged on the feeding support; a feeding hopper is arranged on the feeding support.

[0012] Optionally, a discharge port is arranged at the bottom of the combustion boiler, and the discharge port is located directly above the feeding support. A gate is arranged on the discharge port.

[0013] Optionally, an air inlet is arranged at one end of the first fixing frame, and a blower is arranged at the air inlet.

[0014] The utility model has the following advantages:

[0015] 1. In the utility model, a second fixing frame is arranged on the upper part of the first fixing frame, and a combustion boiler is arranged inside the second fixing frame. Among them, a combustion chamber and a smoke exhaust chamber are arranged inside the combustion boiler. The combustion chamber is used for burning garbage, and the function of the smoke exhaust chamber is to connect the flue gas generated by combustion with the waste heat recovery mechanism through the blower and the first air guide pipeline above it. The waste heat recovery mechanism recovers the heat energy in the flue gas to avoid waste of heat energy.

[0016] 2. In the utility model, an independent waste heat recovery mechanism is designed. Among them, a plurality of convection tube bundles are arranged inside the flue gas pipeline, and every two convection tube bundles are connected by a communication pipeline and arranged in sequence inside the flue gas pipeline. Water source is introduced into the convection tube bundles, and the flue gas heats the water source. It can not only absorb heat energy, but also the heated water source can be used as domestic water, improving the practicability of the equipment.

[0017] 3. In the utility model, in order to discharge the remaining dust after the garbage is burned, a feeding support is arranged inside the first fixing frame, a conveying belt is arranged on its upper part, and the valve is opened when needed to export the dust in the boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the utility model.

[0019] Figure 2 This is the front view of the present utility model.

[0020] Figure 3 This is the structural schematic diagram of the waste heat recovery mechanism of the present utility model.

[0021] Figure 4 This is the internal structural schematic diagram of the flue gas pipeline of the present utility model.

[0022] Figure 5 This is the structural schematic diagram of the feeding mechanism of the present utility model.

[0023] The meanings of the reference numerals in the drawings: 1 - first fixing frame, 2 - second fixing frame, 3 - combustion boiler, 5 - waste heat recovery mechanism, 501 - flue gas pipeline, 502 - sealing cover, 503 - air outlet, 504 - exhaust pipeline, 506 - second air guiding pipeline, 507 - first convection tube bundle, 508 - second convection tube bundle, 509 - connecting pipeline, 6 - feeding support, 7 - blower, 8 - feeding mechanism, 801 - feeding support frame, 802 - feeding belt, 803 - second driving motor, 804 - feeding hopper, 9 - first air guiding pipeline, 10 - feeding baffle, 11 - feeding port, 12 - conveying belt, 13 - first driving motor, 14 - smoke exhaust chamber, 15 - fan. Specific embodiments

[0024] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the orientation terms such as up, down, left, right, front, back, inside and outside that appear or will appear in the text of the present utility model are only based on the drawings of the present utility model, and they do not specifically limit the present utility model.

[0025] Such as Figures 1-5As shown in the figure, a waste incineration waste heat boiler with an additional convection tube bundle includes a first fixing frame 1, a second fixing frame 2, a combustion boiler 3 and a waste heat recovery mechanism 5. The first fixing frame 1 is a rectangular frame structure, and the second fixing frame 2 is arranged on the upper part of the first fixing frame 1. The combustion boiler 3 is arranged inside the second fixing frame 2. A combustion chamber and a smoke exhaust chamber 14 are arranged on the upper part of the combustion boiler 3. The smoke exhaust chamber 14 is communicated with the waste heat recovery mechanism 5 through a fan 15 and a first air guiding pipe 9 on the upper part. The waste heat recovery mechanism 5 includes a flue gas pipe 501, a sealing cover 502, a first convection tube bundle 507, a second convection tube bundle 508, a connecting pipe 509 and an exhaust pipe 504. The flue gas pipe 501 is a rectangular cavity structure with one end open, and the first convection tube bundle 507 is arranged inside the flue gas pipe 501. The first convection tube bundle 507 is communicated with the second convection tube bundle 508 through the connecting pipe 509 to form an annular diversion structure. The sealing cover 502 and the exhaust pipe 504 are arranged on the upper part of the flue gas pipe 501.

[0026] It should be noted that the traditional landfill method not only occupies a large amount of land resources, but also may cause environmental pollution and groundwater pollution. Therefore, the existing domestic waste is generally transported to the edge of the city and disposed of by incineration. During the existing waste incineration process, a large amount of heat is generated, which is generally used for power generation. However, there is still some heat energy in the flue gas after power generation. If it is directly discharged, it will cause heat energy loss. Based on this, we designed a waste incineration waste heat boiler with a convection tube bundle, which can further recover the residual heat energy in the flue gas. The first air guiding pipe 9 is connected to the bottom air inlet of the flue gas pipe 501, and an air outlet 503 is arranged on the upper part of the flue gas pipe 501. A second air guiding pipe 506 is arranged on the air outlet 503. An inlet and an outlet are arranged on the flue gas pipe 501. The inlet is communicated with the first convection tube bundle 507 through an inlet pipe, and the outlet is communicated with the second convection tube bundle 508 through an outlet pipe.

[0027] It should be further noted that in order to realize waste incineration, a combustion boiler 3 is arranged inside the second fixing frame 2, and a combustion chamber and a smoke exhaust chamber 14 are arranged inside it. Among them, the combustion chamber is an independent chamber for burning after waste is introduced. The two ends of the combustion chamber are communicated with the smoke exhaust chamber 14, which can introduce the smoke generated by combustion and is communicated with the waste heat recovery mechanism 5 through the fan 15 and the first air guiding pipe 9 to introduce the smoke into the waste heat recovery mechanism 5 for heat energy recovery.

[0028] It should be further noted that in order to recover the hot gas in the flue gas, we designed a waste heat recovery mechanism 5. Among them, a plurality of first convection tube bundles 507 and second convection tube bundles 508 are arranged inside the flue gas pipeline 501, and they are connected by a connecting pipeline 509 to form an annular flow structure. The bottom of the annular flow structure is connected to the water inlet pipeline, and the upper part is connected to the water outlet pipeline. With this design, when the flue gas contacts the convection tube bundles, it will heat the water source inside, thereby recovering the heat energy in the flue gas, and the heated water source can be used as domestic water, improving the practical effect of the equipment.

[0029] As Figures 1-2 shown, a feeding support 6 is arranged inside the first fixing frame 1, and a conveying belt 12 is arranged inside the feeding support 6. One end of the feeding support 6 is provided with a first driving motor 13.

[0030] It should be noted that in order to discharge the remaining dust after the garbage is burned, we arranged a feeding support inside the first fixing frame. A conveying belt 12 is arranged on its upper part. When needed, the valve is opened to export the dust in the boiler.

[0031] As Figures 1-5 shown, the combustion boiler 3 is a rectangular cavity structure with an open upper part. A feeding baffle 10 is arranged at the opening of the combustion boiler 3, and a feeding port 11 is arranged on the feeding baffle 10. The feeding port 11 is connected to the feeding mechanism 8; the feeding mechanism 8 includes a feeding support 801, a feeding belt 802, a feeding hopper 804 and a second driving motor 803. The feeding belt 802 is arranged inside the feeding support 801, and a second driving motor 803 is arranged on the feeding support 801; a feeding hopper 804 is arranged on the feeding support 801; a discharge port is arranged at the bottom of the combustion boiler 3, and the discharge port is directly above the feeding support 6, and a gate is arranged on the discharge port.

[0032] It should be noted that in order to achieve automatic feeding, we arranged a feeding mechanism 8 at the feeding port 11 at the upper part of the combustion boiler 3. The garbage is lifted by the feeding belt 802 inside the feeding support 801 to achieve the effect of automatic feeding.

[0033] It should be further noted that in order to discharge the dust after combustion, a discharge port is arranged at the bottom of the combustion boiler 3, and a gate is arranged at the discharge port, which can be opened when needed to achieve discharging and guiding of materials.

[0034] As Figure 1 shown, an air inlet is arranged at one end of the first fixing frame 1, and a blower 7 is arranged at the air inlet.

[0035] It should be noted that the air inlet is provided to supply air to the combustion chamber. To facilitate the entry of air, a blower 7 is designed on the air inlet, which can continuously introduce air.

[0036] The embodiments of the present invention have been described in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. A waste incineration waste heat boiler with an additional convection tube bundle, comprising a first fixing frame (1), a second fixing frame (2), a combustion boiler (3) and a waste heat recovery mechanism (5), characterized in that, The first fixing frame (1) is a rectangular frame structure, and a second fixing frame (2) is arranged on the upper part of the first fixing frame (1), and a combustion boiler (3) is arranged inside the second fixing frame (2); A combustion chamber and a smoke exhaust chamber (14) are arranged on the upper part of the combustion boiler (3), and the smoke exhaust chamber (14) is communicated with a waste heat recovery mechanism (5) through a blower (15) and a first air guide pipe (9) at the upper part; The waste heat recovery mechanism (5) includes a flue gas pipe (501), a sealing cover (502), a first convection tube bundle (507), a second convection tube bundle (508), a connecting pipe (509) and an exhaust pipe (504). The flue gas pipe (501) is a rectangular cavity structure with one end open, and a first convection tube bundle (507) is arranged inside the flue gas pipe (501). The first convection tube bundle (507) is communicated with the second convection tube bundle (508) through the connecting pipe (509) to form an annular diversion structure. A sealing cover (502) and an exhaust pipe (504) are arranged on the upper part of the flue gas pipe (501).

2. The waste incineration waste heat boiler with an additional convection tube bundle according to claim 1, characterized in that, The first air guide pipe (9) is connected to the bottom air inlet of the flue gas pipe (501), and an air outlet (503) is arranged on the upper part of the flue gas pipe (501), and a second air guide pipe (506) is arranged on the air outlet (503).

3. An waste incineration waste heat boiler with a newly added convection tube bundle according to claim 1, characterized in that, An inlet and an outlet are arranged on the flue gas pipe (501), and the inlet is communicated with the first convection tube bundle (507) through a water inlet pipe, and the outlet is communicated with the second convection tube bundle (508) through a water outlet pipe.

4. The waste incineration waste heat boiler with an additional convection tube bundle according to claim 1, characterized in that, A feeding support (6) is arranged inside the first fixing frame (1), and a conveying belt (12) is arranged inside the feeding support (6), and a first driving motor (13) is arranged at one end of the feeding support (6).

5. An waste incineration waste heat boiler with a newly added convection tube bundle according to claim 1, characterized in that, The combustion boiler (3) is a rectangular cavity structure with an open upper part. A feeding baffle (10) is arranged at the opening of the combustion boiler (3), a feeding port (11) is arranged on the feeding baffle (10), and the feeding port (11) is connected with a feeding mechanism (8).

6. An waste incineration waste heat boiler with an additional convection tube bundle according to claim 5, characterized in that, The feeding mechanism (8) includes a feeding support (801), a feeding belt (802), a feeding hopper (804) and a second driving motor (803). The feeding belt (802) is arranged inside the feeding support (801), and a second driving motor (803) is arranged on the feeding support (801); A feeding hopper (804) is arranged on the feeding support (801).

7. An waste incineration waste heat boiler with an additional convection tube bundle as claimed in claim 5, characterized in that, A discharge port is arranged at the bottom of the combustion boiler (3), and the discharge port is located directly above the feeding support (6), and a gate is arranged on the discharge port.

8. An waste incineration waste heat boiler with a newly added convection tube bundle according to claim 1, characterized in that, An air inlet is arranged at one end of the first fixing frame (1), and a blower (7) is arranged at the air inlet.

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