Shaft kiln flue gas waste heat recycling device

Abstract

The shaft kiln smoke waste heat recycling device comprises a box body and an air blower, a smoke exhaust pipe is arranged at the right end of the top of the box body, the lower end of an inner cavity of the smoke exhaust pipe is fixedly connected with an activated carbon filter screen, and a smoke conveying pipe is arranged at the left end of the top of the box body. A gas uniformizing seat is fixedly connected between the lower end of the smoke conveying pipe and the left end of the bottom of an inner cavity of the box body, gas uniformizing holes are formed in the top of the gas uniformizing seat, a first partition plate and a second partition plate are fixedly connected to the left end and the right end of the inner cavity of the box body respectively, and gas guide hoods are fixedly connected to the upper ends of the first partition plate and the second partition plate. Under the cooperation of all the structures, heat in smoke can be collected to the maximum extent, the smoke can be purified in a multi-stage mode, the situation that air is polluted after the smoke is exhausted is avoided, and the smoke purification device is simple in structure, convenient to use, excellent in performance, good in practicability and beneficial to use of people.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery of vertical kilns, in particular to a device for recycling waste heat of smoke from vertical kilns. Background Art

[0002] Vertical kiln refers to thermal equipment that continuously calcines clinker by feeding at the top and discharging at the bottom. It consists of kiln body, feeding and discharging device and ventilation equipment. It is widely used to calcine various refractory materials and lime. Its advantages are low capital investment, small floor space, high calcination efficiency, low fuel consumption and easy mechanization and automation.

[0003] At present, a large amount of high-temperature flue gas is generated during the operation of the vertical kiln. In order to avoid heat waste, a vertical kiln flue gas waste heat recovery device is needed. However, the existing vertical kiln flue gas waste heat recovery device is affected by the relatively fast flue gas flow rate in the device, resulting in a low waste heat recovery efficiency of the device and the lack of the ability to purify the flue gas. If it is directly discharged into the air, it will cause great harm. For this reason, we propose a vertical kiln flue gas waste heat recovery device. Utility Model Content

[0004] The utility model aims to provide a device for recycling waste heat of flue gas from a vertical kiln, which has the advantages of good waste heat recovery effect and the ability to purify flue gas, and solves the problem that the existing device for recycling waste heat of flue gas from a vertical kiln is affected by the relatively fast flue gas flow rate in the device, resulting in low waste heat recovery efficiency of the device and the lack of the ability to purify flue gas, and will cause great harm if it is discharged directly into the air.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for recycling waste heat of flue gas from a vertical kiln, comprising a box body and a blower, a smoke exhaust pipe is arranged at the right end of the top of the box body, an activated carbon filter is fixedly connected to the lower end of the inner cavity of the smoke exhaust pipe, a smoke delivery pipe is arranged at the left end of the top of the box body, an air equalizing seat is fixedly connected between the lower end of the smoke delivery pipe and the left end of the bottom of the inner cavity of the box body, an air equalizing hole is opened on the top of the air equalizing seat, a first partition plate and a second partition plate are fixedly connected to the left and right ends of the inner cavity of the box body respectively, an air guide hood is fixedly connected to the upper ends of the first partition plate and the second partition plate, an air guide hood is connected to the upper end thereof, an air guide pipe is connected to the right side of the air guide hood, and a heat exchange pipe is arranged at the lower end of the inner cavity of the box body.

[0006] Preferably, there are multiple air-balancing holes, and the angles between two adjacent air-balancing holes are equal.

[0007] Preferably, a blower is fixedly mounted on the left end of the top of the box body, the smoke inlet end of the blower is connected to the vertical kiln body through a pipeline, and the air outlet end of the blower is connected to the upper end of the smoke conveying pipe.

[0008] Preferably, there are multiple air guide tubes, and the distance between two adjacent air guide tubes is equal.

[0009] Preferably, the right end of the heat exchange tube is connected to a liquid inlet pipe, and the left end of the heat exchange tube is connected to a liquid discharge pipe.

[0010] Preferably, a liquid exchange pipe is provided at the lower end of the rear side of the box body, and a valve body is provided at the rear end of the liquid exchange pipe.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model can collect the heat in the smoke to the maximum extent through the cooperation between various structures, and can perform multi-stage purification on the smoke to avoid the air pollution after exhaust, and has the advantages of simple structure, convenient use, superior performance, good practicality, and is conducive to people's use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model from the first perspective;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model from a third viewing angle;

[0016] Figure 4 This is a schematic diagram of the heat exchange tube structure of the utility model.

[0017] In the figure: 1. box body; 2. vertical kiln body; 3. blower; 4. smoke exhaust pipe; 5. liquid inlet pipe; 6. liquid exchange pipe; 7. valve body; 8. liquid discharge pipe; 9. smoke conveying pipe; 10. heat exchange pipe; 11. air equalizing seat; 12. air equalizing hole; 13. first partition plate; 14. second partition plate; 15. air guide pipe; 16. activated carbon filter; 17. air guide hood. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The box body 1, vertical kiln body 2, blower 3, smoke exhaust pipe 4, liquid inlet pipe 5, liquid exchange pipe 6, valve body 7, liquid discharge pipe 8, smoke conveying pipe 9, heat exchange pipe 10, air equalizing seat 11, air equalizing hole 12, first partition plate 13, second partition plate 14, air guide pipe 15, activated carbon filter 16 and air guide cover 17 of the present application are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0022] See also Figure 1-4 A device for recycling waste heat from flue gas in a vertical kiln comprises a box body 1 and a blower 3. A smoke exhaust pipe 4 is arranged at the right end of the top of the box body 1, and an activated carbon filter 16 is fixedly connected to the lower end of the inner cavity of the smoke exhaust pipe 4. A smoke conveying pipe 9 is arranged at the left end of the top of the box body 1, and an air equalizing seat 11 is fixedly connected between the lower end of the smoke conveying pipe 9 and the left end of the bottom of the inner cavity of the box body 1. An air equalizing hole 12 is opened on the top of the air equalizing seat 11. A first partition plate 13 and a second partition plate 14 are fixedly connected to the left and right ends of the inner cavity of the box body 1, respectively, and an air guide hood 17 is fixedly connected to the upper ends of the first partition plate 13 and the second partition plate 14. The right side of the air guide hood 17 is connected to the air guide pipe 15, and a heat exchange pipe 10 is arranged at the lower end of the inner cavity of the box body 1.

[0023] There are multiple air balancing holes 12 , and the angles between two adjacent air balancing holes 12 are equal.

[0024] Through the above technical solution, the smoke can be evenly distributed through the provision of the gas equalizing holes 12.

[0025] A blower 3 is fixedly installed at the left end of the top of the box body 1. The smoke inlet end of the blower 3 is connected to the vertical kiln body 2 through a pipeline, and the air outlet end of the blower 3 is connected to the upper end of the smoke conveying pipe 9.

[0026] Through the above technical solution, the smoke can be pressurized and transported by setting the blower 3.

[0027] There are multiple air guide tubes 15 , and the distance between two adjacent air guide tubes 15 is equal.

[0028] Through the above technical solution, the filtered gas can be dispersed again through the arrangement of the air guide pipe 15.

[0029] The right end of the heat exchange tube 10 is connected to the liquid inlet pipe 5 , and the left end of the heat exchange tube 10 is connected to the liquid discharge pipe 8 .

[0030] Through the above technical solution, the liquid for heat exchange can be easily transported through the arrangement of the liquid inlet pipe 5 and the liquid discharge pipe 8.

[0031] A liquid exchange pipe 6 is provided at the lower end of the rear side of the box body 1 , and a valve body 7 is provided at the rear end of the liquid exchange pipe 6 .

[0032] Through the above technical solution, the liquid replacement tube 6 is provided to facilitate replacement or replenishment of the liquid in the box body 1.

[0033] During use, after the device is powered on through the external power socket, the blower 3 can input the high-temperature flue gas generated by the vertical kiln body 2 into the air equalizing seat 11 through the pipe through the smoke conveying pipe 9, and the flue gas is dispersed by the air equalizing holes 12 and discharged into the purified water body at the left end of the inner cavity of the box body 1. The purified flue gas will pass through the air guide cover 17 and the air guide pipe 15 and be sent into the water body in the inner cavity of the box body 1 separated by the first partition plate 13 and the second partition plate 14 again, so as to realize the three-time water purification of the flue gas. At the same time, the purified water body can absorb the heat in the flue gas to the greatest extent, and then purify the water body to achieve temperature increase. After the purified gas is discharged through the activated carbon filter 16 through the exhaust pipe 4, there is no need to worry about air pollution. Then, after the waste heat recovery water body is transported to the heat exchange tube 10 through the liquid inlet pipe 5, the flow path of the water body is improved, so that heat exchange can be realized with the three purified water bodies in the inner cavity of the box body 1 in turn, and finally discharged and collected by the discharge pipe 8, which is convenient for people to use.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for recycling waste heat from flue gas of a shaft kiln, comprising a housing (1) and a blower (3), characterized in that: A smoke exhaust pipe (4) is arranged at the right end of the top of the box body (1), and an activated carbon filter (16) is fixedly connected to the lower end of the inner cavity of the smoke exhaust pipe (4). A smoke delivery pipe (9) is arranged at the left end of the top of the box body (1), and an air equalization seat (11) is fixedly connected between the lower end of the smoke delivery pipe (9) and the left end of the bottom of the inner cavity of the box body (1). An air equalization hole (12) is opened on the top of the air equalization seat (11). A first partition plate (13) and a second partition plate (14) are fixedly connected to the left and right ends of the inner cavity of the box body (1), respectively. The upper ends of the first partition plate (13) and the second partition plate (14) are fixedly connected to an air guide cover (17), and the right side of the air guide cover (17) is connected to the air guide pipe (15). A heat exchange pipe (10) is arranged at the lower end of the inner cavity of the box body (1).

2. The device for recycling waste heat from flue gas from a shaft kiln according to claim 1, characterized in that: The number of the air balancing holes (12) is multiple, and the angles between two adjacent air balancing holes (12) are equal.

3. The device for recycling waste heat from flue gas from a shaft kiln according to claim 1, characterized in that: A blower (3) is fixedly mounted on the left end of the top of the box body (1); a smoke inlet end of the blower (3) is connected to the vertical kiln body (2) via a pipeline, and an air outlet end of the blower (3) is connected to the upper end of the smoke conveying pipe (9).

4. The device for recycling waste heat from flue gas from a shaft kiln according to claim 1, characterized in that: The number of the air guide tubes (15) is plural, and the distance between two adjacent air guide tubes (15) is equal.

5. The device for recycling waste heat from flue gas from a shaft kiln according to claim 1, characterized in that: The right end of the heat exchange tube (10) is connected to a liquid inlet pipe (5), and the left end of the heat exchange tube (10) is connected to a liquid discharge pipe (8).

6. The device for recycling waste heat from flue gas from a shaft kiln according to claim 1, characterized in that: A liquid exchange pipe (6) is provided at the lower end of the rear side of the box body (1), and a valve body (7) is provided at the rear end of the liquid exchange pipe (6).

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