High-temperature flue gas waste heat utilization device in industrial plant area

Abstract

The utility model discloses an industrial plant high-temperature flue gas waste heat utilization device which comprises a dust removal box, a gas inlet pipeline is fixedly arranged at the bottom of one side of the dust removal box, a gas outlet pipeline is fixedly arranged at the top of the dust removal box, a plurality of filter plates are arranged in the dust removal box, and a waste heat recovery assembly is arranged in the dust removal box. The waste heat recovery assembly comprises a heat exchange pipeline which is arranged between the multiple filter plates and is arranged in a bent mode, and a cleaning mechanism used for cleaning the multiple filter plates and the heat exchange pipeline is arranged in the dust removal box. According to the multi-stage smoke filtering device, high-temperature smoke is synchronously subjected to multi-stage filtering during heat exchange, smoke treatment procedures are reduced, use is more convenient, the reciprocating lead screw drives the movable seat to reciprocate, the cleaning brushes on the two sides can clean the surfaces of the filtering plate and the heat exchange pipeline, the filtering plate is prevented from being blocked, and the heat exchange pipeline is cleaned.

Description

Technical Field

[0001] This application relates to the field of flue gas treatment, and particularly to a high-temperature flue gas waste heat utilization device for industrial plants. Background Art

[0002] The high-temperature flue gas waste heat utilization device is mainly used to recover the waste heat in the high-temperature flue gas in industrial plants and convert it into useful heat energy for various purposes in the industrial production process, such as heating, drying, steam generation, etc. This device can not only effectively reduce the energy consumption in industrial production, improve the energy utilization efficiency, but also reduce environmental pollution and achieve sustainable development.

[0003] However, in the process of implementing the relevant technical solutions, it is found that there are at least the following technical problems: when treating high-temperature flue gas, generally, a liquid or gas is introduced into the heat exchange pipeline to exchange heat with the high-temperature flue gas and absorb the waste heat of the high-temperature flue gas. During heat exchange, it is impossible to filter the high-temperature flue gas, etc., resulting in more processes in the treatment of high-temperature flue gas and inconvenient use. Utility Model Content

[0004] This application provides a high-temperature flue gas waste heat utilization device for industrial plants, which solves the problem of more processes in the treatment of high-temperature flue gas in the prior art and realizes the effect of filtering high-temperature flue gas during waste heat treatment.

[0005] This application provides a high-temperature flue gas waste heat utilization device for industrial plants, including a dust removal box. A gas inlet pipe is fixedly arranged at the bottom on one side of the dust removal box, and a gas outlet pipe is fixedly arranged at the top of the dust removal box. A plurality of filter plates are arranged inside the dust removal box, and a waste heat recovery component is arranged inside the dust removal box. The waste heat recovery component includes: a heat exchange pipeline arranged between the plurality of filter plates, and the heat exchange pipeline is bent. A cleaning mechanism for cleaning the plurality of filter plates and the heat exchange pipeline is arranged inside the dust removal box.

[0006] Further, one end of the heat exchange pipeline is fixedly provided with an input pipe through a connecting seat, and the other end of the heat exchange pipeline is fixedly provided with an output pipe through a connecting seat. Both the input pipe and the output pipe are arranged on the front surface of the dust removal box.

[0007] Further, the cleaning mechanism includes: a plurality of reciprocating lead screws rotatably connected inside the dust removal box, and the plurality of reciprocating lead screws are respectively arranged on one side of the top of the plurality of filter plates; a movable seat sleeved and threadedly connected to the outside of the reciprocating lead screws; two cleaning brushes respectively arranged on the top and bottom of the movable seat, and the two cleaning brushes are respectively in contact connection with the filter plates and the heat exchange pipeline; a driving component arranged inside the dust removal box, and the driving component is used to drive the plurality of reciprocating lead screws to rotate.

[0008] Further, guide rails are fixedly arranged on the other sides of the tops of the plurality of filter plates, and the movable seat is sleeved and slidably connected to the outer sides of the guide rails.

[0009] Further, a cavity is formed inside the inner wall of the dust removal box, the driving assembly is arranged inside the cavity, and the driving assembly includes: a rotating shaft rotatably connected inside the cavity; a plurality of first bevel gears fixedly arranged on the rotating shaft; a plurality of second bevel gears fixedly arranged at one ends of the plurality of reciprocating lead screws extending into the cavity, and the second bevel gears are meshed with the first bevel gears; a driving motor fixedly installed on the top of the cavity, and an output shaft of the driving motor is fixedly connected to the rotating shaft.

[0010] The technical solution provided by the present application has at least the following technical effects or advantages:

[0011] Through the heat exchange pipes bent between the plurality of filter plates, the high-temperature flue gas is multi-stage filtered during heat exchange, reducing the flue gas treatment process and making it more convenient to use. By driving the reciprocating movement of the movable seat by the reciprocating lead screw, the cleaning brushes on both sides can clean the surfaces of the filter plates and the heat exchange pipes, preventing the filter plates from being blocked and cleaning the heat exchange pipes. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of the overall structure of the waste heat utilization device in the embodiment of the present application;

[0013] Figure 2 It is a schematic cross-sectional structure diagram of the dust removal box in the embodiment of the present application;

[0014] Figure 3 It is a schematic diagram of the structure of the cleaning mechanism in the embodiment of the present application;

[0015] Figure 4 It is a schematic diagram of the structure of the cleaning brush in the embodiment of the present application;

[0016] In the figure: 10, dust removal box; 20, intake pipe; 30, outlet pipe; 40, filter plate; 50, waste heat recovery component; 60, cleaning mechanism; 70, cavity; 51, heat exchange pipe; 52, connecting seat; 53, input pipe; 54, output pipe; 61, reciprocating lead screw; 62, movable seat; 63, cleaning brush; 64, guide rail; 65, driving assembly; 651, rotating shaft; 652, first bevel gear; 653, second bevel gear; 654, driving motor. Detailed Embodiments

[0017] The embodiment of the present application discloses a high-temperature flue gas waste heat utilization device for industrial plants. Through the bent heat exchange pipe 51 and multiple filter plates 40, the high-temperature flue gas is filtered at multiple levels during waste heat recovery, reducing the treatment process of the high-temperature flue gas. Through the reciprocating movement of the cleaning brushes 63 on both sides, the filter plates 40 and the heat exchange pipe 51 are cleaned to prevent the filter plates 40 from being blocked and to clean the heat exchange pipe 51.

[0018] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the specification drawings and specific implementation manners.

[0019] Please refer to Figure 1 and Figure 2 , this embodiment provides a high-temperature flue gas waste heat utilization device for industrial plants, including a dust removal box 10. A gas inlet pipe 20 is fixedly arranged at the bottom of one side of the dust removal box 10, and an air outlet pipe 30 is fixedly arranged at the top of the dust removal box 10. A plurality of filter plates 40 are arranged inside the dust removal box 10. The diameters of the filter holes of the plurality of filter plates 40 gradually decrease from bottom to top. A waste heat recovery assembly 50 is arranged inside the dust removal box 10. The waste heat recovery assembly 50 includes a heat exchange pipe 51, a connecting seat 52, an input pipe 53, and an output pipe 54. The heat exchange pipe 51 is arranged between the plurality of filter plates 40, and the heat exchange pipe 51 is bent. The cross-sectional shape of the heat exchange pipe 51 is U-shaped, and multiple layers of heat exchange pipes 51 are connected through connecting pipes arranged on the inner wall of the dust removal box 10. The input pipe 53 is fixedly arranged at one end of the heat exchange pipe 51 through the connecting seat 52, and the output pipe 54 is fixedly arranged at the other end of the heat exchange pipe 51 through the connecting seat 52. Both the input pipe 53 and the output pipe 54 are arranged on the front surface of the dust removal box 10. The multiple layers of bent heat exchange pipes 51 can make full use of the internal space of the dust removal box 10 to improve the heat exchange efficiency. The high-temperature flue gas can be filtered at multiple levels through the plurality of filter plates 40 to remove impurities in the high-temperature flue gas. The heat exchange material is input into the heat exchange pipe 51 through the input pipe 53. After sufficient contact between the bent heat exchange pipe 51 and the high-temperature flue gas inside the dust removal box 10, it is discharged from the output pipe 54 to recover and utilize the waste heat in the high-temperature flue gas.

[0020] Please refer to Figures 1 - 4, a cleaning mechanism 60 for cleaning a plurality of filter plates 40 and heat exchange pipes 51 is arranged inside the dust removal box 10. The cleaning mechanism 60 includes a reciprocating lead screw 61, a movable seat 62, a cleaning brush 63, a guide rail 64, and a driving assembly 65. A plurality of reciprocating lead screws 61 are rotatably connected inside the dust removal box 10, and the plurality of reciprocating lead screws 61 are respectively arranged on one side of the tops of the plurality of filter plates 40. One end of the movable seat 62 is sleeved and threadedly connected to the outside of the reciprocating lead screw 61. Two cleaning brushes 63 are respectively arranged on the top and bottom of the movable seat 62, and the two cleaning brushes 63 are respectively in contact connection with the filter plate 40 and the heat exchange pipe 51. The guide rail 64 is fixedly arranged on the other side of the tops of the plurality of filter plates 40. The other end of the movable seat 62 is sleeved and slidably connected to the outside of the guide rail 64. The guide rail 64 limits the sliding of the movable seat 62 to prevent the movable seat 62 from rotating with the reciprocating lead screw 61. The driving assembly 65 is arranged inside the dust removal box 10, and the driving assembly 65 is used to drive the plurality of reciprocating lead screws 61 to rotate. A spraying component is arranged inside the dust removal box 10. A sewage discharge pipe is arranged on one side of the dust removal box 10. The driving assembly 65 can be a plurality of motors. The reciprocating lead screw 61 is driven to rotate by the motor, so that the reciprocating lead screw 61 drives the movable seat 62 threadedly connected thereto to reciprocate, so that the cleaning brushes 63 on both sides clean the filter plate 40 and the heat exchange pipe 51. When cleaning the filter plate 40, water can be sprayed through the nozzle of the spraying component to clean the filter plate 40 and the heat exchange pipe 51 more cleanly. The sewage generated during cleaning can be directly discharged from the sewage discharge pipe.

[0021] Please refer to Figures 1 - 4 , a cavity 70 is opened inside the inner wall of the dust removal box 10. The driving assembly 65 is arranged inside the cavity 70. The driving assembly 65 includes a rotating shaft 651, a first bevel gear 652, a second bevel gear 653, and a driving motor 654. The rotating shaft 651 is rotatably connected inside the cavity 70. A plurality of first bevel gears 652 are fixedly arranged on the rotating shaft 651. A plurality of second bevel gears 653 are fixedly arranged at one end of the plurality of reciprocating lead screws 61 extending into the cavity 70, and the second bevel gear 653 is meshed and connected with the first bevel gear 652. The driving motor 654 is fixedly installed on the top of the cavity 70, and the output shaft of the driving motor 654 is fixedly connected with the rotating shaft 651. The rotating shaft 651 is driven to rotate by the output shaft of the driving motor 654, so that the plurality of first bevel gears 652 on the rotating shaft 651 rotate accordingly, so that the first bevel gear 652 drives the rotating shaft 651 meshed with it to rotate, so that the plurality of rotating shafts 651 respectively drive the reciprocating lead screws 61 at the tops of the plurality of filter plates 40 to rotate, so that the cleaning brush 63 can clean the filter plate 40 and the heat exchange pipe 51.

[0022] The functional principle of the present application can be described through the following operation modes:

[0023] In use, high-temperature flue gas is introduced into the dust removal box 10 through the intake pipe 20, and the heat-exchanged material is introduced into the interior of the heat exchange pipe 51 through the input pipe 53. The high-temperature flue gas passes through multiple filter plates 40 and contacts the heat exchange pipe 51 arranged in a bent manner, and is discharged from the outlet pipe 30 at the top of the dust removal box 10. The high-temperature flue gas is filtered by the filter plates 40 with the pore sizes of multiple filter holes decreasing step by step from bottom to top, removing impurities in the high-temperature flue gas. The multi-layer heat exchange pipes 51 arranged in a U-shaped bend are in full contact with the high-temperature flue gas, enabling the heat exchange pipes 51 to fully absorb the heat in the high-temperature flue gas and recover the waste heat in the high-temperature flue gas. The heat-exchanged material inside the heat exchange pipe 51 is discharged from the output pipe 54 and transported to the required position for the utilization of waste heat. When it is necessary to clean the interior of the dust removal box 10, the introduction of high-temperature flue gas is stopped, and the spraying component inside the dust removal box 10 is started, so that the spray head sprays water on the filter plates 40 and the heat exchange pipes 51 inside the dust removal box 10. The drive motor 654 inside the cavity 70 is started, so that the output shaft of the drive motor 654 drives the rotating shaft 651 and multiple first bevel gears 652 to rotate, so that multiple second bevel gears 653 meshing with the multiple first bevel gears 652 respectively drive the reciprocating lead screws 61 at the tops of the multiple filter plates 40 to rotate, so that the reciprocating lead screws 61 drive the movable seats 62 threadedly connected thereto to reciprocate. One end of the movable seat 62 slides along the guide rail 64, and the guide rail 64 limits the sliding of the reciprocating lead screw 61. The reciprocating movement of the movable seat 62 can enable the cleaning brushes 63 on both sides to clean the filter plates 40 and the heat exchange pipes 51, and cooperate with the sprayed water to clean the filter plates 40 and the heat exchange pipes 51. The sewage after cleaning is directly discharged from the sewage pipe, completing the cleaning work inside the dust removal box 10.

[0024] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

[0025] The above-mentioned is only the preferred specific implementation manner of the embodiments of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application, according to the technical solution and its concept of this application, makes equivalent substitutions or changes, and should be covered by the protection scope of this application.

Claims

1. A device for utilizing waste heat from high-temperature flue gas in an industrial plant, comprising a dust removal box (10), characterized in that: An air inlet duct (20) is fixedly arranged at the bottom of one side of the dust removal box (10), an air outlet duct (30) is fixedly arranged at the top of the dust removal box (10), a plurality of filter plates (40) are arranged inside the dust removal box (10), and a waste heat recovery component (50) is arranged inside the dust removal box (10), and the waste heat recovery component (50) comprises: The heat exchange pipe (51) is arranged between the plurality of filter plates (40), and the heat exchange pipe (51) is arranged in a curved manner. A cleaning mechanism (60) for cleaning the plurality of filter plates (40) and the heat exchange pipe (51) is arranged inside the dust removal box (10).

2. The device for utilizing waste heat from high-temperature flue gas in an industrial plant as claimed in claim 1, characterized in that: An input pipe (53) is fixedly provided at one end of the heat exchange pipe (51) via a connection seat (52), and an output pipe (54) is fixedly provided at the other end of the heat exchange pipe (51) via a connection seat (52); the input pipe (53) and the output pipe (54) are both arranged on the front side of the dust removal box (10).

3. The device for utilizing waste heat from high-temperature flue gas in an industrial plant as claimed in claim 1, characterized in that: The cleaning mechanism (60) comprises: A plurality of reciprocating screws (61) are rotatably connected to the interior of the dust removal box (10), and the plurality of reciprocating screws (61) are respectively arranged on one side of the top of the plurality of filter plates (40); A movable seat (62) is sleeved and threadedly connected to the outer side of the reciprocating screw (61); Two cleaning brushes (63) are respectively arranged on the top and bottom of the movable seat (62), and the two cleaning brushes (63) are respectively in contact with and connected to the filter plate (40) and the heat exchange pipe (51); A driving assembly (65) is arranged inside the dust removal box (10), and the driving assembly (65) is used to drive the plurality of reciprocating screws (61) to rotate.

4. The device for utilizing waste heat from high-temperature flue gas in an industrial plant as claimed in claim 3, characterized in that: A guide rail (64) is fixedly arranged on the other side of the top of the plurality of filter plates (40), and the movable seat (62) is sleeved and slidably connected to the outer side of the guide rail (64).

5. The device for utilizing waste heat from high-temperature flue gas in an industrial plant as claimed in claim 3, characterized in that: A cavity (70) is provided inside the inner wall of the dust removal box (10), and the driving component (65) is arranged inside the cavity (70). The driving component (65) comprises: A rotating shaft (651) rotatably connected to the interior of the cavity (70); A plurality of first bevel gears (652) are fixedly disposed on the rotating shaft (651); A plurality of second bevel gears (653) are fixedly arranged on one end of the plurality of reciprocating screws (61) extending into the cavity (70), and the second bevel gears (653) are meshingly connected with the first bevel gears (652); The driving motor (654) is fixedly mounted on the top of the cavity (70), and the output shaft of the driving motor (654) is fixedly connected to the rotating shaft (651).

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