Waste heat utilization device

Abstract

The utility model relates to the technical field of chemical production equipment, and discloses a waste heat utilization device which comprises a heat exchange box, one side of the heat exchange box is fixedly connected with a first liquid inlet pipe, one side of the heat exchange box is fixedly connected with a first liquid discharge pipe, the other side of the heat exchange box is provided with a second liquid inlet pipe, and one end of the second liquid inlet pipe is provided with a connector. The other end of the connecting pipe is fixedly connected with the heat exchange box, a heat exchange assembly is arranged in the heat exchange box and comprises a heat exchange pipe and a copper plate, the heat exchange pipe is rotationally connected with the other end of the connecting pipe, the heat exchange pipe is rotationally connected with the heat exchange box, the copper plate is fixedly connected with the heat exchange pipe, and desulfurization slurry enters the heat exchange pipe through one end of the connecting pipe; heat is guided into cold water in the heat exchange box through the heat exchange pipe and the copper plate, the copper plate continuously heats the cold water, meanwhile, the copper plate is stressed when internal water flows, and the copper plate and the heat exchange pipe rotate in the heat exchange box, so that the contact area of the copper plate and the cold water is increased, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical production equipment, and specifically relates to a waste heat utilization device. Background Art

[0002] In a coal-fired thermal power plant, electricity is generated by burning coal and then supplied to users. The flue gas after combustion has a high sulfur content, and direct discharge is harmful to the air, so desulfurization treatment is required. Desulfurization slurry is produced after desulfurization. The desulfurization slurry contains a large amount of heat energy, and direct discharge will cause a waste of heat energy, so the heat of the slurry needs to be recovered and utilized.

[0003] After searching, a document with publication number (CN220436622U) discloses a slurry heat exchange heater with waste heat utilization of desulfurization slurry, including a heater body, and a desulfurization slurry pipe is connected to the side of the heater body, and a water inlet is provided at the bottom of the desulfurization slurry pipe, and a defogger is provided at the top of the desulfurization slurry pipe, and the defogger is installed in the middle inner side of the heater body.

[0004] The above-mentioned device injects high-temperature desulfurization slurry into the inner bottom of the heater. The generated high-temperature flue gas can remove the white mist after passing through the defogger plate, and the high-temperature gas will heat the heat exchange tube, and the heated hot water will enter the heating network. The above-mentioned device releases and utilizes the heat of the desulfurization slurry through a simple U-shaped heat exchange tube, but the U-shaped heat exchange tube is fixed in the device and cannot be moved. The contact area between the U-shaped heat exchange tube and the heat exchange liquid is fixed, resulting in low heat exchange efficiency of the U-shaped heat exchange tube.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0007] A waste heat utilization device comprises a heat exchange box, a first liquid inlet pipe is fixedly connected to one side of the heat exchange box, a first liquid discharge pipe is fixedly connected to one side of the heat exchange box, a second liquid inlet pipe is provided on the other side of the heat exchange box, a connecting head is provided at one end of the second liquid inlet pipe, a connecting pipe is provided at the other end of the connecting head, the other end of the connecting pipe is fixedly connected to the heat exchange box, a heat exchange component is provided inside the heat exchange box, the heat exchange component comprises a heat exchange tube and a copper plate, the heat exchange tube and the other end of the connecting tube are rotatably connected, the heat exchange tube is rotatably connected to the heat exchange box, the copper plate is fixedly connected to the heat exchange tube, a sedimentation box is provided at the other end of the heat exchange tube, an acceleration component is provided in the connecting pipe, the other end of the first liquid discharge pipe is fixedly connected to an insulation box, hot water is collected through the insulation box, and a water outlet pipe is fixedly connected to one side of the insulation box.

[0008] As a preferred embodiment of the utility model, a plurality of support rings are provided on the copper plate, and the support rings are fixedly connected to the copper plate, and the copper plate is supported by the support rings in a limited position.

[0009] As a preferred embodiment of the utility model, one end of the connector is threadedly connected to the second liquid inlet pipe, the other end of the connector is provided with a filter screen, the filter screen is fixedly connected to the connector, and the other end of the connector is threadedly connected to the connecting pipe.

[0010] As a preferred embodiment of the utility model, the acceleration assembly includes a protective shell and an acceleration wheel, the protective shell is fixedly connected to the connecting pipe, the protective shell is provided with a through slot, and the acceleration wheel is rotatably connected to the through slot.

[0011] As a preferred embodiment of the present utility model, the acceleration wheel is provided with a plurality of blades, and the blades are arranged as an arc-shaped blade structure with an arc.

[0012] As a preferred embodiment of the utility model, a plurality of accelerating components are installed in the connecting pipe, and the internal liquid flow rate is increased by the cooperation between the plurality of accelerating components.

[0013] As a preferred embodiment of the utility model, the other end of the heat exchange tube is rotatably connected to the second liquid discharge pipe, and the other end of the second liquid discharge pipe is fixedly connected to the sedimentation box.

[0014] As a preferred embodiment of the utility model, both ends of the heat exchange tube are provided with sealing gaskets, the sealing gaskets are rotatably connected to the heat exchange tube, and the sealing gaskets are fixedly connected to the heat exchange box.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. In this waste heat utilization device, the desulfurized slurry enters the heat exchange tube through one end of the connecting tube, and the heat is introduced into the cold water inside the heat exchange box through the heat exchange tube and the copper plate. The copper plate continuously heats the cold water. At the same time, the copper plate is acted upon by force when the internal water flows. The copper plate and the heat exchange tube rotate in the heat exchange box, and the cold water is driven to flow when the copper plate rotates, thereby increasing the contact area between the copper plate and the cold water and improving the heat exchange efficiency.

[0017] 2. This waste heat utilization device, when the desulfurization slurry passes through the acceleration wheel, it impacts the acceleration wheel blades, so that the blades drive the entire acceleration wheel to rotate, and the rotation of the acceleration wheel drives the blades to generate additional power, so that the desulfurization slurry in the connecting pipe flows faster, avoiding the desulfurization slurry flowing too slowly and staying in the connecting pipe, resulting in heat loss.

[0018] 3. In this waste heat utilization device, the desulfurized slurry after heat exchange enters the sedimentation box through the second liquid discharge pipe for natural sedimentation, and the residual impurities inside are separated from the liquid.

[0019] 4. In this waste heat utilization device, the desulfurized slurry is filtered when passing through the filter screen, so as to prevent impurities in the desulfurized slurry from entering the device and adhering and solidifying in the pipeline. When the filter screen needs to be replaced, only the connector needs to be removed from the second liquid inlet pipe and the connecting pipe, and the new filter screen needs to be reinstalled through the connector.

[0020] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In the attached picture:

[0022] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0023] Figure 2 This is a cross-sectional view of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the heat exchange tube of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure between the second liquid inlet pipe and the connecting pipe of the utility model;

[0026] Figure 5 This is a schematic diagram of the internal structure of the protective shell of the utility model.

[0027] In the figure: 1. heat exchange box; 101. first liquid inlet pipe; 102. first liquid discharge pipe; 2. second liquid inlet pipe; 201. connecting pipe; 3. insulation box; 301. outlet pipe; 4. sedimentation box; 401. second liquid discharge pipe; 5. connector; 501. filter screen; 6. protective shell; 601. acceleration wheel; 7. heat exchange tube; 701. copper plate; 702. support ring; 703. sealing gasket. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0029] See also Figure 1-5A waste heat utilization device comprises a heat exchange box 1, one side of the heat exchange box 1 is fixedly connected with a first liquid inlet pipe 101, one side of the heat exchange box 1 is fixedly connected with a first liquid discharge pipe 102, the other side of the heat exchange box 1 is provided with a second liquid inlet pipe 2, one end of the second liquid inlet pipe 2 is provided with a connector 5, the other end of the connector 5 is provided with a connecting pipe 201, the other end of the connecting pipe 201 is fixedly connected to the heat exchange box 1, a heat exchange component is provided inside the heat exchange box 1, the heat exchange component comprises a heat exchange tube 7 and a copper plate 701, the heat exchange tube 7 is rotatably connected to the other end of the connecting tube 201, the heat exchange tube 7 is rotatably connected to the heat exchange box 1, the copper plate 701 is fixedly connected to the heat exchange tube 7, and the other end of the heat exchange tube 7 is provided with a sink The down-container 4 and the connecting pipe 201 are provided with an acceleration component. The other end of the first discharge pipe 102 is fixedly connected to the insulation box 3. The hot water is collected through the insulation box 3. One side of the insulation box 3 is fixedly connected to the water outlet pipe 301. Cold water is added to the heat exchange box 1 through the first liquid inlet pipe 101. The desulfurized slurry is sent into the heat exchange tube 7 through the second liquid inlet pipe 2. The heat is introduced into the cold water inside the heat exchange box 1 through the heat exchange tube 7 and the copper plate 701. The copper plate 701 continuously heats the cold water. At the same time, the copper plate 701 is subjected to force when the internal water flows. The copper plate 701 drives the heat exchange tube 7 to rotate, thereby increasing the contact area between the copper plate 701 and the cold water, and improving the heat exchange efficiency.

[0030] Among them, a plurality of support rings 702 are provided on the copper plate 701, and the support rings 702 are fixedly connected to the copper plate 701. The copper plate 701 is limitedly supported by the support rings 702 to prevent the copper plate 701 from deforming due to thermal expansion and contraction, thereby affecting the operation of the device.

[0031] Among them, one end of the connector 5 is threadedly connected to the second liquid inlet pipe 2, and the other end of the connector 5 is provided with a filter screen 501. The filter screen 501 is fixedly connected to the connector 5, and the other end of the connector 5 is threadedly connected to the connecting pipe 201. The desulfurization slurry is filtered when passing through the filter screen 501 to prevent impurities in the desulfurization slurry from entering the device and adhering to and solidifying in the pipeline. When the filter screen 501 needs to be replaced, it is only necessary to remove the connector 5 from the second liquid inlet pipe 2 and the connecting pipe 201, and reinstall the new filter screen 501 through the connector 5.

[0032] Among them, the acceleration component includes a protective shell 6 and an acceleration wheel 601. The protective shell 6 is fixedly connected to the connecting pipe 201. The protective shell 6 is provided with a through groove. The acceleration wheel 601 is rotatably connected to the through groove. When the desulfurization slurry passes through the acceleration wheel 601, it impacts the blades of the acceleration wheel 601, so that the blades drive the entire acceleration wheel 601 to rotate. After the acceleration wheel 601 rotates, it drives the blades to generate additional power, so that the desulfurization slurry in the connecting pipe 201 is accelerated to flow, thereby preventing the desulfurization slurry from staying in the connecting pipe 201 due to too slow flow rate and causing heat loss.

[0033] Among them, the acceleration wheel 601 is provided with a plurality of blades, and the blades are arranged as an arc-shaped blade structure with an arc, and the desulfurization slurry is drained by the arc-shaped blades to reduce the power loss of the desulfurization slurry.

[0034] Among them, multiple groups of acceleration components are installed in the connecting pipe 201, and the internal liquid flow rate is increased by the cooperation between the multiple acceleration components, thereby avoiding the desulfurization slurry flow rate being too slow and staying in the connecting pipe 201 to cause heat loss.

[0035] Among them, the other end of the heat exchange tube 7 is rotatably connected to the second drainage pipe 401, and the other end of the second drainage pipe 401 is fixedly connected to the sedimentation tank 4. After heat exchange, the desulfurized slurry enters the sedimentation tank 4 through the second drainage pipe 401 for natural sedimentation to separate the residual impurities inside from the liquid.

[0036] Among them, both ends of the heat exchange tube 7 are provided with sealing gaskets 703, the sealing gaskets 703 are rotatably connected to the heat exchange tube 7, and the sealing gaskets 703 are fixedly connected to the heat exchange box 1. The sealing gaskets 703 ensure the sealing of the device to avoid leakage of desulfurization slurry and pollution to the environment.

[0037] Working principle: add cold water into the heat exchange box 1 through the first liquid inlet pipe 101, and send the desulfurized slurry into the heat exchange tube 7 through the second liquid inlet pipe 2. The desulfurized slurry is filtered when passing through the filter 501 to prevent impurities in the desulfurized slurry from entering the device and adhering to and solidifying in the pipeline. When the filter 501 needs to be replaced, just remove the connector 5 from the second liquid inlet pipe 2 and the connecting pipe 201, and reinstall the new filter 501 through the connector 5. When the desulfurized slurry passes through the acceleration wheel 601, it impacts the blades of the acceleration wheel 601, so that the blades drive the entire acceleration wheel 601 to rotate, and the acceleration wheel 601 rotates and drives the blades to generate additional power, so that the desulfurized slurry in the connecting pipe 201 is accelerated to flow, and the desulfurized slurry flow rate is too slow to stay in the connecting pipe 201. The heat loss is caused. The desulfurization slurry enters the heat exchange tube 7 through one end of the connecting pipe 201. The heat is introduced into the cold water inside the heat exchange box 1 through the heat exchange tube 7 and the copper plate 701. The copper plate 701 continuously heats the cold water. At the same time, the copper plate 701 is acted upon by force when the internal water flows. The copper plate 701 drives the heat exchange tube 7 to rotate, thereby increasing the contact area between the copper plate 701 and the cold water and improving the heat exchange efficiency. After heating, the liquid flows into the insulation box 3. The outlet pipe 301 can release the hot water inside the insulation box 3 for utilization. This design can utilize the desulfurization slurry while reducing the temperature of the desulfurization slurry and accelerating the sedimentation reaction of the desulfurization slurry. After heat exchange, the desulfurization slurry enters the sedimentation box 4 through the second drain pipe 401 for natural sedimentation to separate the residual impurities inside from the liquid.

[0038] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A waste heat utilization device, comprising a heat exchange box (1), wherein a first liquid inlet pipe (101) is fixedly connected to one side of the heat exchange box (1), a first liquid discharge pipe (102) is fixedly connected to one side of the heat exchange box (1), and a second liquid inlet pipe (2) is provided on the other side of the heat exchange box (1), characterized in that: A connector (5) is provided at one end of the second liquid inlet pipe (2), a connecting pipe (201) is provided at the other end of the connecting pipe (5), the other end of the connecting pipe (201) is fixedly connected to the heat exchange box (1), a heat exchange component is provided inside the heat exchange box (1), the heat exchange component comprises a heat exchange tube (7) and a copper plate (701), the heat exchange tube (7) is rotatably connected to the other end of the connecting pipe (201), the heat exchange tube (7) is rotatably connected to the heat exchange box (1), the copper plate (701) is fixedly connected to the heat exchange tube (7), and an acceleration component is provided inside the connecting pipe (201).

2. The waste heat utilization device according to claim 1, characterized in that: A plurality of support rings (702) are provided on the copper plate (701), and the support rings (702) are fixedly connected to the copper plate (701), and the copper plate (701) is supported in a limited position by the support rings (702).

3. The waste heat utilization device according to claim 1, characterized in that: One end of the connector (5) is threadedly connected to the second liquid inlet pipe (2), the other end of the connector (5) is provided with a filter screen (501), the filter screen (501) is fixedly connected to the connector (5), and the other end of the connector (5) is threadedly connected to the connecting pipe (201).

4. The waste heat utilization device according to claim 1, characterized in that: The acceleration assembly comprises a protective shell (6) and an acceleration wheel (601); the protective shell (6) is fixedly connected to the connecting pipe (201); a through slot is provided in the protective shell (6); and the acceleration wheel (601) is rotatably connected to the through slot.

5. The waste heat utilization device according to claim 4, characterized in that: The acceleration wheel (601) is provided with a plurality of blades, and the blades are arranged as an arc-shaped blade structure with an arc.

6. The waste heat utilization device according to claim 1, characterized in that: The other end of the heat exchange tube (7) is provided with a sedimentation box (4), and the other end of the first liquid discharge pipe (102) is fixedly connected to a heat preservation box (3), through which hot water is collected, and one side of the heat preservation box (3) is fixedly connected to a water outlet pipe (301).

7. The waste heat utilization device according to claim 1, characterized in that: The other end of the heat exchange tube (7) is rotatably connected to the second liquid discharge pipe (401), and the other end of the second liquid discharge pipe (401) is fixedly connected to the sedimentation box (4).

8. The waste heat utilization device according to claim 1, characterized in that: Both ends of the heat exchange tube (7) are provided with sealing gaskets (703); the sealing gaskets (703) are rotatably connected to the heat exchange tube (7); and the sealing gaskets (703) are fixedly connected to the heat exchange box (1).

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