A device for utilizing the waste heat of boiler flue gas

Abstract

The present invention provides a device for utilizing the waste heat of boiler flue gas, belonging to the technical field of flue gas treatment, which includes a support assembly, a swing assembly, a storage bin, an air inlet assembly, and a swing gas transmission assembly. The storage bin is rotatably arranged on one side of the support assembly for storing coal. The swing assembly is installed on one side of the storage bin for driving the storage bin to swing reciprocally. One end of the air inlet assembly extends into the storage bin and is movably connected to the swing gas transmission assembly. The air inlet assembly is used for conveying the boiler flue gas to the inside of the storage bin via the swing gas transmission assembly. When the flue gas flows through the swing gas transmission assembly, it can drive the swing gas transmission assembly to swing. Compared with the prior art, the embodiment of the present invention can utilize the boiler flue gas to heat and dry the external coal, realizing the full recovery and utilization of the waste heat of the flue gas, and having the advantages of good coal drying effect and good waste heat utilization effect of the flue gas.

Description

Technical Field

[0001] The present invention belongs to the technical field of flue gas treatment, and specifically relates to a device for utilizing the waste heat of boiler flue gas. Background Art

[0002] At present, in the industrial production process, coal is usually used as fuel. When coal burns, a large amount of flue gas is generated, and the flue gas contains a large amount of heat. To realize the recovery and utilization of the heat in the flue gas, usually the waste heat in the flue gas is used to heat the external coal, avoiding the waste of the heat in the flue gas and ensuring the subsequent combustion effect of the external coal.

[0003] In the prior art, when using the waste heat of boiler flue gas to heat external coal, the flue gas is mostly directly introduced into the coal storage bin. Since the coal blocks are in contact with each other during the coal storage process, the gaps between the coal blocks are small, and the flue gas cannot flow smoothly along the gaps between the coal blocks, resulting in poor heating and drying effects of the coal and unable to achieve comprehensive drying of the coal. Summary of the Invention

[0004] Aiming at the deficiencies of the above prior art, the technical problem to be solved by the embodiments of the present invention is to provide a device for utilizing the waste heat of boiler flue gas.

[0005] To solve the above technical problem, the present invention provides the following technical solutions:

[0006] A device for utilizing the waste heat of boiler flue gas includes a support assembly, a swing assembly, a storage barrel, an air inlet assembly, and a swing gas transmission assembly.

[0007] The storage barrel is rotatably arranged on one side of the support assembly for storing coal.

[0008] The swing assembly is installed on one side of the storage barrel for driving the storage barrel to swing reciprocally.

[0009] One end of the air inlet assembly extends into the storage barrel and is movably connected to the swing gas transmission assembly.

[0010] The air inlet assembly is used for conveying boiler flue gas to the inside of the storage barrel through the swing gas transmission assembly.

[0011] When the flue gas flows through the swing gas transmission assembly, it can drive the swing gas transmission assembly to swing.

[0012] As a further improvement of the present invention: the air inlet assembly includes an air transmission pipeline and a plurality of air transmission branch pipes.

[0013] The gas transmission pipeline penetrates through the storage barrel along the axial direction of the storage barrel and is fixedly connected to the storage barrel. A plurality of the gas transmission branch pipes are uniformly distributed inside the storage barrel, and one ends of the plurality of the gas transmission branch pipes are all communicated with the inner cavity of the gas transmission pipeline.

[0014] The swing gas transmission assembly includes a swing ball, a second flexible pipe, and a second elastic member.

[0015] The inside of the swing ball is hollow. The inner cavity of the swing ball is communicated with the inner cavity of the gas transmission branch pipe through the second flexible pipe. An air inlet hole is formed in the side wall of the swing ball. One end of the second elastic member is connected to the gas transmission branch pipe, and the other end is connected to the swing ball.

[0016] As a further improvement scheme of the present invention: The support assembly includes a base and two groups of brackets fixedly arranged on one side of the base and distributed oppositely.

[0017] Two ends of the gas transmission pipeline are respectively rotatably connected to the two groups of brackets.

[0018] As a further improvement scheme of the present invention: The swing assembly includes a first air inlet pipe, a first flexible pipe, a second air inlet pipe, and a first elastic member.

[0019] One end of the second air inlet pipe is communicated with the gas transmission pipeline, and the other end is communicated with the first air inlet pipe through the first flexible pipe. The first air inlet pipe and the second air inlet pipe are perpendicular to each other. One end of the first elastic member is connected to the second air inlet pipe, and the other end is connected to the bracket.

[0020] As a further improvement scheme of the present invention: A plurality of material pushing rods are fixedly arranged on the inner wall of the storage barrel.

[0021] As a further improvement scheme of the present invention: The side wall of the storage barrel is provided with a feed inlet and a discharge outlet, and a sealing plate is hinged inside the discharge outlet.

[0022] As a further improvement scheme of the present invention: The first elastic member and the second elastic member are springs or metal elastic sheets.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] In the embodiments of the present invention, boiler flue gas is transported to the inside of the storage cylinder through the intake assembly via the swing gas transport assembly, and the waste heat in the flue gas is used to heat the coal stored inside the storage cylinder to improve the dryness of the coal and the subsequent combustion effect of the coal. When the flue gas flows through the inside of the swing gas transport assembly, the swing gas transport assembly can be driven to swing. When the swing gas transport assembly swings, on the one hand, the coal inside the storage cylinder can be agitated, so as to disperse the coal, ensure that the flue gas can smoothly flow along the gaps between the coal, and improve the drying effect of the coal. On the other hand, the direction of the flue gas output through the swing gas transport assembly can be changed to ensure that the flue gas can fully fill the space inside the storage cylinder, thereby further improving the drying effect of the coal. The storage cylinder is driven to swing by the swing assembly, so that the coal inside the storage cylinder shakes, so as to further increase the gaps between the coal, thereby further improving the drying effect of the coal. Compared with the prior art, it can use boiler flue gas to heat and dry external coal, realize the full recovery and utilization of flue gas waste heat, and has the advantages of good coal drying effect and good flue gas waste heat utilization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of a boiler flue gas waste heat utilization device;

[0026] Figure 2 is a schematic external view of a boiler flue gas waste heat utilization device;

[0027] Figure 3 is Figure 1 an enlarged view of area A in

[0028] In the figure: 10 - base, 20 - support, 30 - swing assembly, 301 - first intake pipe, 302 - first flexible pipe, 303 - second intake pipe, 304 - first elastic member, 40 - storage cylinder, 401 - material stirring rod, 402 - feed inlet, 403 - sealing plate, 404 - discharge port, 50 - intake assembly, 501 - gas transport pipeline, 502 - gas transport branch pipe, 60 - swing gas transport assembly, 601 - second flexible pipe, 602 - second elastic member, 603 - pendulum ball, 604 - gas outlet hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The technical solutions of this patent will be further described in detail below in conjunction with the specific embodiments.

[0030] The embodiments of this patent are described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain this patent and should not be construed as a limitation to this patent.

[0031] Please refer toFigure 1 , in this embodiment, a boiler flue gas waste heat utilization device is provided, which includes a support assembly, a swing assembly 30, a storage cylinder 40, an air intake assembly 50, and a swing gas transportation assembly 60. The storage cylinder 40 is rotatably arranged on one side of the support assembly and is used for storing coal. The swing assembly 30 is installed on one side of the storage cylinder 40 and is used to drive the storage cylinder 40 to swing reciprocally. One end of the air intake assembly 50 extends into the storage cylinder 40 and is movably connected to the swing gas transportation assembly 60. The air intake assembly 50 is used to transport boiler flue gas to the inside of the storage cylinder 40 via the swing gas transportation assembly 60. When the flue gas flows through the swing gas transportation assembly 60, it can drive the swing gas transportation assembly 60 to swing.

[0032] The boiler flue gas is transported to the inside of the storage cylinder 40 via the swing gas transportation assembly 60 by the air intake assembly 50, and the waste heat in the flue gas is used to heat the coal stored inside the storage cylinder 40 to improve the drying degree of the coal and the subsequent combustion effect of the coal. When the flue gas flows through the inside of the swing gas transportation assembly 60, it can drive the swing gas transportation assembly 60 to swing. When the swing gas transportation assembly 60 swings, on the one hand, it can stir the coal inside the storage cylinder 40, thereby dispersing the coal to ensure that the flue gas can smoothly flow through the gaps between the coal, improving the drying effect of the coal. On the other hand, it can change the direction of the flue gas output from the swing gas transportation assembly 60 to ensure that the flue gas can fully fill the space inside the storage cylinder 40, thereby further improving the drying effect of the coal. The swing assembly 30 drives the storage cylinder 40 to swing, causing the coal inside the storage cylinder 40 to shake, so as to further increase the gaps between the coal, thereby further improving the drying effect of the coal.

[0033] Please refer to Figure 1 and Figure 3 , in one embodiment, the air intake assembly 50 includes an air transportation pipeline 501 and a plurality of air transportation branch pipes 502. The air transportation pipeline 501 penetrates through the storage cylinder 40 along the axial direction of the storage cylinder 40 and is fixedly connected to the storage cylinder 40. The plurality of air transportation branch pipes 502 are evenly distributed inside the storage cylinder 40, and one ends of the plurality of air transportation branch pipes 502 are all communicated with the inner cavity of the air transportation pipeline 501. The swing gas transportation assembly 60 includes a swing ball 603, a second flexible pipe 601, and a second elastic member 602. The inside of the swing ball 603 is hollow, and the inner cavity of the swing ball 603 is communicated with the inner cavity of the air transportation branch pipe 502 through the second flexible pipe 601. An air outlet hole 604 is opened on the side wall of the swing ball 603. One end of the second elastic member 602 is connected to the air transportation branch pipe 502, and the other end is connected to the swing ball 603.

[0034] The boiler flue gas is transported to the inside of the gas transmission branch pipe 502 through the gas transmission pipeline 501, and then transported to the inner cavity of the pendulum ball 603 through the second flexible pipe 601, and then transported to the inside of the storage bin 40 through the gas transmission hole 604 to heat and dry the coal; when the flue gas enters the inner cavity of the pendulum ball 603 from the second flexible pipe 601, with the support of the second elastic member 602, the pendulum ball 603 can be pushed to swing on the side of the gas transmission branch pipe 502 to stir the coal, so as to increase the gap between the coals, ensure the smooth flow of the flue gas along the coals, and at the same time, when the pendulum ball 603 swings, the direction of the output hole 604 changes continuously, so as to change the output range of the flue gas to ensure that the flue gas fully fills the inside of the storage bin 40, thereby further improving the drying effect of the coal.

[0035] Please refer to Figure 1 and Figure 2 , in one embodiment, the support assembly includes a base 10 and two sets of brackets 20 fixedly arranged on one side of the base 10 in a relative distribution, and both ends of the gas transmission pipeline 501 are rotatably connected to the two sets of brackets 20 respectively.

[0036] Please refer to Figure 1 and Figure 2 , in one embodiment, the swing assembly 30 includes a first intake pipe 301, a first flexible pipe 302, a second intake pipe 303 and a first elastic member 304. One end of the second intake pipe 303 is communicated with the gas transmission pipeline 501, and the other end is communicated with the first intake pipe 301 through the first flexible pipe 302. The first intake pipe 301 and the second intake pipe 303 are perpendicular to each other. One end of the first elastic member 304 is connected to the second intake pipe 303, and the other end is connected to the bracket 20.

[0037] By pumping the boiler flue gas into the first intake pipe 301, then into the inside of the first flexible pipe 302, the second intake pipe 303, the gas transmission pipeline 501 and the gas transmission branch pipe 502, and then into the inside of the pendulum ball 603 through the second flexible pipe 601 and output through the gas transmission hole 604, the heating and drying of the coal are realized; when the boiler flue gas enters the second intake pipe 303 from the first intake pipe 301, since the first intake pipe 301 and the second intake pipe 303 are perpendicular to each other, the boiler flue gas can push the second intake pipe 303, and the second intake pipe 303 drives the gas transmission pipeline 501 to rotate along the bracket 20. With the elastic support of the first elastic member 304, the gas transmission pipeline 501 can drive the storage bin 40 to rotate in the opposite direction, so as to realize the reciprocating swing of the storage bin 40, so that the coal inside the storage bin 40 shakes, so as to increase the gap between the coal particles or coal blocks, and ensure the comprehensive heating and drying of the coal by the boiler flue gas; through the setting of the first flexible pipe 302, the first flexible pipe 302 can adaptively expand and contract during the swing of the second intake pipe 303.

[0038] Please refer to Figure 1 , in one embodiment, a plurality of coal pushing rods 401 are fixedly arranged on the inner wall of the storage barrel 40. During the swinging process of the storage barrel 40, the coal can be further dispersed by the coal pushing rods 401.

[0039] Please refer to Figure 1 , in one embodiment, a feed inlet 402 and a discharge outlet 404 are formed on the side wall of the storage barrel 40, and a sealing plate 403 is hingedly arranged inside the discharge outlet 404.

[0040] Through the arrangement of the feed inlet 402, coal can be put into the storage barrel 40. When the boiler flue gas enters the storage barrel 40 to heat and dry the coal, the flue gas can be discharged from the feed inlet 402. When the coal needs to be used after being heated and dried, the sealing plate 403 can be opened, and the coal located inside the storage barrel 40 can be discharged from the discharge outlet 404.

[0041] In one embodiment, the first elastic member 304 and the second elastic member 602 can be springs or metal shrapnel, and there is no limitation here.

[0042] In the embodiment of the present invention, the boiler flue gas is conveyed to the inside of the storage barrel 40 through the air inlet assembly 50 via the swinging gas conveying assembly 60, and the waste heat in the flue gas is used to heat the coal stored inside the storage barrel 40 to improve the drying degree of the coal and the subsequent combustion effect of the coal; when the flue gas flows through the inside of the swinging gas conveying assembly 60, the swinging gas conveying assembly 60 can be driven to swing. When the swinging gas conveying assembly 60 swings, on the one hand, the coal inside the storage barrel 40 can be stirred, so as to disperse the coal, ensure that the flue gas can smoothly flow along the gaps between the coal, and improve the drying effect of the coal. On the other hand, the direction of the flue gas output through the swinging gas conveying assembly 60 can be changed to ensure that the flue gas can fully fill the space inside the storage barrel 40, thereby further improving the drying effect of the coal; the storage barrel 40 is driven to swing by the swinging assembly 30, so that the coal inside the storage barrel 40 shakes, further increasing the gaps between the coal, thereby further improving the drying effect of the coal. Compared with the prior art, it can use the boiler flue gas to heat and dry the external coal, realizing the full recovery and utilization of the waste heat of the flue gas, and having the advantages of good coal drying effect and good waste heat utilization effect of the flue gas.

[0043] The above has described the preferred embodiments of this patent in detail, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can also be made without departing from the gist of this patent.

Claims

1. A boiler flue gas waste heat utilization device, characterized in that It includes a support component, a swing component, a storage cylinder, an air intake component, and a swing air delivery component. The storage cylinder is rotatably arranged on one side of the support component and is used for storing coal. The swing component is installed on one side of the storage cylinder and is used to drive the storage cylinder to swing reciprocally. One end of the air intake component extends into the storage cylinder and is movably connected to the swing air delivery component. The air intake component is used to convey boiler flue gas to the inside of the storage cylinder via the swing air delivery component. When the flue gas flows through the swing air delivery component, it can drive the swing air delivery component to swing. The air intake component includes an air delivery pipeline and a number of air delivery branch pipes. The air delivery pipeline penetrates through the storage cylinder along the axial direction of the storage cylinder and is fixedly connected to the storage cylinder. A number of the air delivery branch pipes are evenly distributed inside the storage cylinder, and one end of each of the air delivery branch pipes is communicated with the inner cavity of the air delivery pipeline. The swing air delivery component includes a swing ball, a second flexible pipe, and a second elastic member. The inside of the swing ball is hollow. The inner cavity of the swing ball is communicated with the inner cavity of the air delivery branch pipe through the second flexible pipe. Air outlet holes are formed in the side wall of the swing ball. One end of the second elastic member is connected to the air delivery branch pipe, and the other end is connected to the swing ball. The support component includes a base and two groups of brackets fixedly arranged on one side of the base and distributed oppositely. Both ends of the air delivery pipeline are rotatably connected to the two groups of brackets respectively. The swing component includes a first air inlet pipe, a first flexible pipe, a second air inlet pipe, and a first elastic member. One end of the second air inlet pipe is communicated with the air delivery pipeline, and the other end is communicated with the first air inlet pipe through the first flexible pipe. The first air inlet pipe and the second air inlet pipe are perpendicular to each other. One end of the first elastic member is connected to the second air inlet pipe, and the other end is connected to the bracket.

2. The boiler flue gas waste heat utilization device according to claim 1, characterized in that, A number of material stirring rods are fixedly arranged on the inner wall of the storage cylinder.

3. A boiler flue gas waste heat utilization device according to claim 1, characterized in that, A feed inlet and a discharge outlet are formed in the side wall of the storage cylinder. A sealing plate is hingedly arranged inside the discharge outlet.

4. A boiler flue gas waste heat utilization device according to claim 1, characterized in that, The first elastic member and the second elastic member are springs or metal elastic sheets.

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