Heat pump energy purification furnace

Abstract

The invention discloses a heat pump energy purification furnace, which relates to the technical field of heat pumps and comprises a furnace body, a storage tank, a pressure reducer, a compressor and a first heat exchanger. A heat exchange pipeline is arranged in the furnace body; the storage tank is used for storing a heat exchange medium; the pressure reducer is used for receiving a heat exchange medium from the storage tank or the heat exchange pipeline; an inlet of the compressor is connected with the pressure reducer and is used for extracting steam in the pressure reducer and heating and pressurizing the steam, so that the heat exchange medium is evaporated and cooled in the pressure reducer; the first heat exchanger utilizes steam from an outlet of the compressor to heat a heat exchange medium from the heat exchange pipeline or in the storage tank. The production cost can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat pump, in particular to a heat pump purification furnace. BACKGROUND

[0002] The purification furnace is a device for removing impurities in materials to improve the purity. The principle is to achieve the purpose of purification by dissolving the materials and then re-crystallizing. The purification furnace can be divided into two types: crystal growth purification furnace and parent melt purification furnace. The existing purification furnace needs intermittent heating and cooling, and a large amount of heat is lost during the heating and cooling process, which is high in energy consumption and high in production cost. SUMMARY

[0003] The present application aims to solve at least one of the technical problems in the prior art. To this end, the present application provides a heat pump purification furnace which can reduce the production cost.

[0004] According to the heat pump purification furnace of the first aspect of the present application, the furnace body is provided with a heat exchange pipeline; the storage tank is used for storing the heat exchange medium; the pressure reducer is used for receiving the heat exchange medium from the storage tank or the heat exchange pipeline; the inlet of the compressor is connected with the pressure reducer, which is used for extracting the steam in the pressure reducer and heating and pressurizing the steam to evaporate and cool the heat exchange medium in the pressure reducer; and the first heat exchanger uses the steam from the outlet of the compressor to heat the heat exchange medium in the heat exchange pipeline or the storage tank.

[0005] According to the heat pump purification furnace of the present application, the heat pump principle is realized by the compressor, the heat is transferred between the furnace body and the storage tank according to the process requirement, the heat pump can generate several times of the consumed electric energy for heating and cooling, which greatly reduces the cost of providing the required heating energy. Through the heat pump principle and the heat storage of the heat exchange medium, the dependence on external cold source and external heat source and the related operating cost are reduced.

[0006] According to some embodiments of the present application, the storage tank is connected with a first storage tank outlet pipe and a first storage tank inlet pipe, the first storage tank outlet pipe is provided with a first storage tank outlet valve, the first storage tank outlet pipe is connected with the pressure reducer inlet pipe, the pressure reducer liquid outlet pipe is connected with a first water pump, the first water pump is connected with a first water pump outlet pipe, the first water pump outlet pipe is connected with the first connection port of the heat exchange pipeline through a first switching valve, the first connection port of the heat exchange pipeline is connected with the pressure reducer inlet pipe, the first bypass pipe is provided with a first bypass valve, the first water pump outlet pipe is connected with the second bypass pipe, and the second bypass pipe is provided with a second bypass valve.

[0007] According to some embodiments of the present application, the first heat exchanger is connected with a first heat exchanger water side first connecting pipe, a first heat exchanger water side second connecting pipe, a first heat exchanger steam side first connecting pipe and a first heat exchanger steam side second connecting pipe, the storage tank is connected with a second storage tank outlet pipe, a second storage tank inlet pipe and a third storage tank inlet pipe, the first heat exchanger water side first connecting pipe is connected with the second connecting port of the heat exchange pipe, the first heat exchanger water side second connecting pipe is connected with the second storage tank inlet pipe through the second storage tank inlet valve, the second storage tank inlet pipe is provided with a second water pump, the first heat exchanger steam side first connecting pipe is connected with the outlet of the compressor, the first heat exchanger steam side second connecting pipe is connected with the third storage tank inlet pipe through the third storage tank inlet valve, the third storage tank inlet pipe is connected with the outlet of the third water pump, the third water pump inlet is connected with the third storage tank inlet valve, the second storage tank outlet pipe is provided with a fourth water pump, and the outlet of the fourth water pump is provided with a third bypass pipe between the first heat exchanger water side second connecting pipe, and the third bypass pipe is provided with a third bypass valve.

[0008] According to some embodiments of the present application, the third bypass pipe is provided with a second heat exchanger, the second heat exchanger is used for heating the heat exchange medium flowing through the third bypass pipe, the second heat exchanger is further connected with a first connecting pipe and a second connecting pipe, the first connecting pipe is connected with the first heat exchanger steam side second connecting pipe, the first connecting pipe is provided with a first connecting valve, and the second connecting pipe is connected with the third water pump inlet, and the second connecting pipe is provided with a second connecting valve.

[0009] According to some embodiments of the present application, the second water pump and the third water pump inlet are both provided with a buffer tank, and the buffer tank is used for preventing the second water pump and the third water pump from idling.

[0010] According to some embodiments of the present application, the first water pump, the second water pump, the third water pump and the fourth water pump are all centrifugal pumps.

[0011] According to some embodiments of the present application, the first heat exchanger is a shell-and-tube heat exchanger, and the second heat exchanger is a plate heat exchanger.

[0012] According to some embodiments of the present application, the storage tank is provided with a pressure gauge.

[0013] According to some embodiments of the present application, the compression ratio of the compressor ranges from 1:1.4 to 1:2.

[0014] According to some embodiments of the present application, the heat exchange medium is water.

[0015] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in conjunction with the accompanying drawings and embodiments, in which: Figure 1 A cooling furnace body flow process schematic diagram for an embodiment of the present application; Figure 2 A heating furnace body flow process schematic diagram for an embodiment of the present application.

[0017] Reference signs: Furnace body 100; Heat exchange pipeline 200, first connecting port 201, first bypass pipeline 202, first bypass valve 203, second bypass pipeline 204, second bypass valve 205, second connecting port 206; Storage tank 300, first storage tank outlet pipeline 310, first storage tank outlet valve 311, first storage tank inlet pipeline 320, second storage tank outlet pipeline 330, fourth water pump 331, third bypass pipeline 332, third bypass valve 333, second storage tank inlet pipeline 340, second water pump 341, third storage tank inlet pipeline 350, third storage tank inlet valve 351, third water pump 352; Pressure reducer 400; Compressor 500; First heat exchanger 600, first connecting pipeline 610, first heat exchanger water side second connecting pipeline 620, second storage tank inlet valve 621, first heat exchanger steam side first connecting pipeline 630, first heat exchanger steam side second connecting pipeline 640; First water pump 700, first switching valve 701, first water pump outlet pipeline 710; Second heat exchanger 800, first connecting pipeline 810, first connecting valve 811, second connecting pipeline 820, second connecting valve 821. DETAILED DESCRIPTION

[0018] The embodiments of the present application will be described in detail below, examples of which are shown in the accompanying drawings, in which the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0019] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, etc. is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0020] In the description of the present application, plural means more than two. If there is a description of the first, second, only for the purpose of distinguishing technical features, and can not be understood as indicating or implying the relative importance or implied indicating the number of indicated technical features or implied indicating the order of the indicated technical features.

[0021] In the description of the present application, unless otherwise expressly limited, the words such as set, install, connect, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0022] Reference Figures 1 to 2As shown, the heat pump purification furnace of one embodiment of the present application comprises: a furnace body 100, a storage tank 300, a pressure reducer 400, a compressor 500, and a first heat exchanger 600. The furnace body 100 is arranged with a heat exchange pipeline 200; the storage tank 300 is used to store heat exchange medium; the pressure reducer 400 is used to receive heat exchange medium from the storage tank 300 or the heat exchange pipeline 200; the inlet of the compressor 500 is connected with the pressure reducer 400, which is used to extract steam in the pressure reducer 400 and warm and pressurize the steam to make the heat exchange medium evaporate and cool down in the pressure reducer 400; the first heat exchanger 600 uses steam from the outlet of the compressor 500 to heat heat exchange medium from the heat exchange pipeline 200 or the storage tank 300. The purification process usually needs to cool the furnace body 100 and heat the furnace body 100. The traditional method needs to consume a large amount of energy to provide cold and heat respectively. While the embodiment uses the compressor 500 to work through the heat pump cycle, when the furnace body 100 needs to be cooled, the heat exchange medium in the storage tank 300 is evaporated by pressure reduction to achieve cooling effect and remove the low-temperature heat in the furnace body 100, the evaporated heat exchange medium is compressed by the compressor 500, the compression process in the compressor 500 can be regarded as adiabatic compression, the temperature and pressure of the gaseous heat exchange medium are increased, then the gaseous heat exchange medium with increased temperature is used to heat the heat exchange medium heated by the furnace body 100, and then the heat exchange medium is sent into the storage tank 300. The storage tank 300 receives the heat exchange medium compressed and heated by the compressor 500 and the heat exchange medium heated by the furnace body 100, so the temperature in the storage tank 300 is continuously increased, the heat exchange medium cooled by the pressure reduction and heat absorption of the furnace body 100 is continuously cooled, so the furnace body 100 is continuously cooled, and the maximum temperature difference between the furnace body 100 and the heat exchange medium in the storage tank 300 is determined by the compression ratio of the compressor 500. The temperature of the high-temperature and high-pressure steam at the outlet of the compressor 500 can be adjusted by the compression ratio of the compressor 500, so as to control the heating temperature provided by the first heat exchanger 600. When the furnace body 100 needs to be heated, the heat exchange medium cooled by the furnace body 100 enters the pressure reducer 400 to be evaporated and cooled by pressure reduction, so as to achieve cooling effect. The liquid heat exchange medium cooled by evaporation enters the storage tank 300, the evaporated gaseous heat exchange medium is compressed by the compressor 500, the temperature and pressure of the gaseous heat exchange medium are increased, the gaseous heat exchange medium is sent into the first heat exchanger 600, the heat exchange medium in the storage tank 300 also enters the first heat exchanger 600 to be heated, and the heat exchange medium after being heated enters the heat exchange pipeline 200 to heat the furnace body 100. The compressor 500 can generate several times of the consumed electric energy for heating, which greatly reduces the cost of providing heating energy. Through the heat pump principle and the heat storage of the heat exchange medium itself, the dependence on external cold source and external heat source and the related operation cost are reduced.

[0023] Reference Figures 1 to 2As shown, it can be understood that the storage tank 300 is connected with a first storage tank outlet pipe 310 and a first storage tank inlet pipe 320, the first storage tank outlet pipe 310 is provided with a first storage tank outlet valve 311, the first storage tank outlet pipe 310 is connected with an inlet pipe of the pressure reducer 400, a liquid outlet pipe of the pressure reducer 400 is connected with a first water pump 700, the first water pump 700 is connected with a first water pump outlet pipe 710, the first water pump outlet pipe 710 is connected with a first connecting port 201 of the heat exchange pipeline 200 through a first switching valve 701, the first connecting port 201 of the heat exchange pipeline 200 is connected with the inlet pipe of the pressure reducer 400 through a first bypass pipe 202, the first bypass pipe 202 is provided with a first bypass valve 203, the first water pump outlet pipe 710 is connected with the first storage tank inlet pipe 320 through a second bypass pipe 204, and the second bypass pipe 204 is provided with a second bypass valve 205.

[0024] Cooling furnace body 100 mode: close the second bypass valve 205 and the first bypass valve 203, open the first storage tank outlet valve 311 and the first switching valve 701, so that the liquid heat exchange medium flows from the storage tank 300 to the pressure reducer 400, the heat exchange medium evaporates in the pressure reducer 400 to absorb heat, so that the temperature of the liquid heat exchange medium is reduced, and the liquid heat exchange medium is cooled to enter the heat exchange pipeline 200 to cool the furnace body 100.

[0025] Heating furnace body 100 mode: open the second bypass valve 205 and the first bypass valve 203, close the first storage tank outlet valve 311 and the first switching valve 701, so that the liquid heat exchange medium flows from the heat exchange pipeline 200 to the pressure reducer 400, the heat exchange medium evaporates in the pressure reducer 400 to absorb heat, so that the temperature of the liquid heat exchange medium is reduced, and the liquid heat exchange medium is cooled to enter the storage tank 300 to cool the heat exchange medium in the storage tank 300.

[0026] Only by operating the first storage tank outlet valve 311, the first bypass valve 203, the second bypass valve 205 and the first switching valve 701, the system can be quickly switched from the cooling furnace body 100 mode to the heating furnace body 100 mode without changing the operation state of the compressor 500 and the pressure reducer 400, so as to meet the different cooling and heating requirements of the purification process in different stages.

[0027] Reference Figures 1 to 2As shown, it can be understood that the first heat exchanger 600 is connected with the first heat exchanger water side first connecting pipe 610, the first heat exchanger water side second connecting pipe 620, the first heat exchanger steam side first connecting pipe 630 and the first heat exchanger steam side second connecting pipe 640, the storage tank 300 is connected with the second storage tank outlet pipe 330, the second storage tank inlet pipe 340 and the third storage tank inlet pipe 350, the first heat exchanger water side first connecting pipe 610 is connected with the second connecting port 206 of the heat exchange pipeline 200, the first heat exchanger water side second connecting pipe 620 is connected with the second storage tank inlet pipe 340 through the second storage tank inlet valve 621, the second storage tank inlet pipe 340 is provided with the second water pump 341, the first heat exchanger steam side first connecting pipe 630 is connected with the outlet of the compressor 500, the first heat exchanger steam side second connecting pipe 640 is connected with the third storage tank inlet pipe 350 through the third storage tank inlet valve 351, the third storage tank inlet pipe 350 is connected with the outlet of the third water pump 352, the inlet of the third water pump 352 is connected with the third storage tank inlet valve 351, the second storage tank outlet pipe 330 is provided with the fourth water pump 331, the third bypass pipe 332 is arranged between the outlet of the fourth water pump 331 and the first heat exchanger water side second connecting pipe 620, and the third bypass valve 333 is arranged on the third bypass pipe 332.

[0028] Cooling furnace body 100 mode: close the third bypass valve 333, open the third storage tank inlet valve 351 and the second storage tank inlet valve 621, and make the liquid heat exchange medium flow from the second connecting port 206 of the heat exchange pipeline 200 to the first heat exchanger 600 to be heated, and the heated heat exchange medium is pressurized by the second water pump 341 and sent into the storage tank 300; Heating furnace body 100 mode: open the third bypass valve 333 and the third storage tank inlet valve 351, and close the second storage tank inlet valve 621, the fourth water pump 331 sends the heat exchange medium in the storage tank 300 into the first heat exchanger 600 to be heated, and then enters the second connecting port 206 of the heat exchange pipeline 200 to heat the furnace body 100.

[0029] Reference Figure 1 and Figure 2As shown, it can be understood that the third bypass pipe 332 is provided with a second heat exchanger 800 for heating the heat exchange medium flowing through the third bypass pipe 332, and the second heat exchanger 800 is further connected with a first connecting pipe 810 and a second connecting pipe 820. The first connecting pipe 810 is connected with the second connecting pipe 640 of the first heat exchanger steam side, and the first connecting pipe 810 is provided with a first connecting valve 811. The second connecting pipe 820 is connected with the inlet of the third water pump 352, and the second connecting pipe 820 is provided with a second connecting valve 821. The purpose of the second heat exchanger 800 is to use the condensed heat exchange medium in the first heat exchanger 600 to preheat the heat exchange medium entering the first heat exchanger 600 from the storage tank 300, so as to improve the heat efficiency. It can be predicted that when the continuous operation makes the temperature of the heat exchange medium in the storage tank 300 too high, part of the steam at the outlet of the compressor 500 can be discharged to the atmosphere to achieve the purpose of cooling. When the first connecting valve 811 and the second connecting valve 821 are opened, the third storage tank inlet valve 351 is closed. When the first connecting valve 811 and the second connecting valve 821 are closed, the third storage tank inlet valve 351 is opened. Whether to use the second heat exchanger 800 can be selected according to the actual process needs. The first connecting pipe 810 and the second connecting pipe 820 are communicated through the second heat exchanger 800.

[0030] Referring to Figure 1 and Figure 2 As shown, it can be understood that the second water pump 341 and the third water pump 352 are provided with buffer tanks at the inlets, and the buffer tanks are used to prevent the second water pump 341 and the third water pump 352 from idling. The heat exchange medium at the inlet of the second water pump 341 comes from the first heat exchanger 600 and is close to the saturation temperature. The third water pump 352 delivers the just-condensed heat exchange medium in the first heat exchanger 600. Once the pipeline pressure fluctuates or the temperature fluctuates, the liquid heat exchange medium is easy to cavitate, which causes damage to the second water pump 341 and the third water pump 352. The height of the buffer tank is more than 10m higher than that of the second water pump 341 and the third water pump 352. The static pressure generated by the height difference is used to suppress the generation of cavitation, thereby improving the service life of the second water pump 341 and the third water pump 352. A part of air is left in the buffer tank. By using the compressibility of air, the pressure fluctuation is absorbed, and the working state of the second water pump 341 and the third water pump 352 is stabilized.

[0031] Referring to Figure 1 and Figure 2 As shown, it can be understood that the first water pump 700, the second water pump 341, the third water pump 352 and the fourth water pump 331 are all centrifugal pumps. The centrifugal pump has the advantages of convenient adjustment, wide application range and convenient installation and maintenance. It can be predicted that the first water pump 700, the second water pump 341, the third water pump 352 and the fourth water pump 331 can select single-stage or multi-stage centrifugal pumps according to the pressure demand.

[0032] Referring to Figure 1and Figure 2 As shown in FIG. 1, it can be understood that the first heat exchanger 600 is a shell-and-tube heat exchanger, and the first heat exchanger 600 releases heat by condensing the high-temperature and high-pressure steam from the outlet of the compressor 500, so a shell-and-tube heat exchanger suitable for phase change heat exchange of the working medium is selected. The second heat exchanger 800 is a plate heat exchanger, and both the cold fluid and the hot fluid in the second heat exchanger 800 are liquid, and the plate heat exchanger can be used to improve the heat exchange efficiency as much as possible.

[0033] Referring to FIG. 1, Figure 1 and Figure 2 As shown in FIG. 1, it can be understood that the storage tank 300 is provided with a pressure gauge. The higher the pressure in the storage tank 300, the higher the boiling point of the heat exchange medium, and the higher temperature heat exchange medium can be stored. The pressure in the storage tank 300 is monitored by the pressure gauge to ensure that the pressure does not exceed the design pressure of the storage tank 300.

[0034] Referring to FIG. 1, Figure 1 and Figure 2 As shown in FIG. 1, it can be understood that the compressor 500 is a single-stage centrifugal compressor 500, and the compression ratio of the compressor 500 is in the range of 1:1.4 to 1:2. The single-stage centrifugal compressor 500 has a high volume flow rate and high working efficiency in the compression ratio range of 1:1.4 to 1:2.

[0035] Referring to FIG. 1, Figure 1 and Figure 2 Figure 1 Figure 2 As shown in FIG. 1, it can be understood that the heat exchange medium is water. Water has a high specific heat capacity, can store more heat, and has a low operating cost.

[0036] Working principle: cooling furnace body 100 mode: close first interface valve 811, second interface valve 821, third bypass valve 333, second bypass valve 205 and first bypass valve 203, open third storage tank inlet valve 351, second storage tank inlet valve 621, first storage tank outlet valve 311 and first switching valve 701, start first water pump 700, second water pump 341 and third water pump 352, and close fourth water pump 331. Liquid heat exchange medium flows from the storage tank 300 to the pressure reducer 400, and the heat exchange medium evaporates and absorbs heat in the pressure reducer 400, so that the temperature of the liquid heat exchange medium is reduced. The cooled liquid heat exchange medium enters the heat exchange pipeline 200 to cool the furnace body 100. The evaporated gaseous heat exchange medium is extracted and compressed by the compressor 500, and the temperature and pressure of the gaseous heat exchange medium are increased. The liquid heat exchange medium heated by the furnace body 100 flows from the second connection port 206 of the heat exchange pipeline 200 to the first heat exchanger 600 and is heated again, and then is pressurized by the second water pump 341 and sent into the storage tank 300.

[0037] The heating furnace body 100 mode: open the second bypass valve 205, the first bypass valve 203, the third bypass valve 333, the first joint valve 811 and the second joint valve 821, close the first tank outlet valve 311, the first switch valve 701, the second tank inlet valve 621, the third tank inlet valve 351, start the first water pump 700, the third water pump 352 and the fourth water pump 331, and close the second water pump 341. Make the liquid heat exchange medium flow from the heat exchange pipeline 200 to the pressure reducer 400, and the heat exchange medium evaporates in the pressure reducer 400 to absorb heat, so that the temperature of the liquid heat exchange medium is reduced, and the cooled liquid heat exchange medium enters the tank 300 to cool the heat exchange medium in the tank 300. The fourth water pump 331 sends the heat exchange medium in the tank 300 into the second heat exchanger 800 to preheat, and then into the first heat exchanger 600 to be heated twice, and then into the second connecting port 206 of the heat exchange pipeline 200 to heat the furnace body 100.

[0038] The above describes the embodiments of the present application in detail in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application.

Claims

1. A heat pump energy purification furnace, characterized in that: include: A furnace body (100), wherein a heat exchange pipeline (200) is arranged in the furnace body (100); A storage tank (300) for storing a heat exchange medium; a pressure reducer (400), the pressure reducer (400) being used to receive the heat exchange medium from the storage tank (300) or the heat exchange pipeline (200); A compressor (500), the inlet of which is connected to the pressure reducer (400), for extracting steam from the pressure reducer (400) and heating and pressurizing the steam so that the heat exchange medium evaporates and cools down in the pressure reducer (400); The first heat exchanger (600) utilizes steam from the outlet of the compressor (500) to heat the heat exchange medium from the heat exchange pipeline (200) or the storage tank (300).

2. The heat pump energy purification furnace according to claim 1, characterized in that: The storage tank (300) is connected to a first storage tank outlet pipe (310) and a first storage tank inlet pipe (320). A first storage tank outlet valve (311) is provided on the first storage tank outlet pipe (310). The first storage tank outlet pipe (310) is connected to the inlet pipe of the pressure reducer (400). The liquid outlet pipe of the pressure reducer (400) is connected to the first water pump (700). The first water pump (700) is connected to the first water pump outlet pipe (710). The first water pump outlet pipe (710) is connected to the first switching valve (711). 01) is connected to the first connection port (201) of the heat exchange pipeline (200), a first bypass pipe (202) is connected between the first connection port (201) of the heat exchange pipeline (200) and the inlet pipe of the pressure reducer (400), a first bypass valve (203) is provided on the first bypass pipe (202), a second bypass pipe (204) is connected between the first water pump outlet pipe (710) and the first storage tank inlet pipe (320), and a second bypass valve (205) is provided on the second bypass pipe (204).

3. The heat pump energy purification furnace according to claim 2, characterized in that: The first heat exchanger (600) is connected to a first connecting pipe (610) on the water side of the first heat exchanger, a second connecting pipe (620) on the water side of the first heat exchanger, a first connecting pipe (630) on the steam side of the first heat exchanger, and a second connecting pipe (640) on the steam side of the first heat exchanger. The storage tank (300) is connected to a second storage tank outlet pipe (330), a second storage tank inlet pipe (340), and a third storage tank inlet pipe (350). The first connecting pipe (610) on the water side of the first heat exchanger is connected to the second connection port (206) of the heat exchange pipeline (200). The second connecting pipe (620) on the water side of the first heat exchanger is connected to the second storage tank inlet pipe (340) via a second storage tank inlet valve (621). The second storage tank inlet pipe (340) is provided with a valve. A second water pump (341) is provided. The first connecting pipe (630) on the steam side of the first heat exchanger is connected to the outlet of the compressor (500). The second connecting pipe (640) on the steam side of the first heat exchanger is connected to the third storage tank inlet pipe (350) through the third storage tank inlet valve (351). The third storage tank inlet pipe (350) is connected to the outlet of the third water pump (352). The inlet of the third water pump (352) is connected to the third storage tank inlet valve (351). A fourth water pump (331) is provided on the second storage tank outlet pipe (330). A third bypass pipe (332) is provided between the outlet of the fourth water pump (331) and the second connecting pipe (620) on the water side of the first heat exchanger. The third bypass pipe (332) is provided with a third bypass valve (333).

4. The heat pump energy purification furnace according to claim 3, characterized in that: The third bypass pipe (332) is provided with a second heat exchanger (800), and the second heat exchanger (800) is used to heat the heat exchange medium flowing through the third bypass pipe (332). The second heat exchanger (800) is further connected to a first connecting pipe (810) and a second connecting pipe (820). The first connecting pipe (810) is connected to the second connecting pipe (640) on the steam side of the first heat exchanger, and a first connecting valve (811) is provided on the first connecting pipe (810). The second connecting pipe (820) is connected to the inlet of the third water pump (352), and a second connecting valve (821) is provided on the second connecting pipe (820).

5. The heat pump energy purification furnace according to claim 4, characterized in that: Buffer tanks are provided at the inlets of the second water pump (341) and the third water pump (352), and the buffer tanks are used to prevent the second water pump (341) and the third water pump (352) from idling.

6. The heat pump energy purification furnace according to claim 4, characterized in that: The first water pump (700), the second water pump (341), the third water pump (352), and the fourth water pump (331) are all centrifugal pumps.

7. The heat pump energy purification furnace according to claim 4, characterized in that: The first heat exchanger (600) is a shell and tube heat exchanger, and the second heat exchanger (800) is a plate heat exchanger.

8. The heat pump energy purification furnace according to claim 1, characterized in that: The storage tank (300) is provided with a pressure gauge.

9. The heat pump energy purification furnace according to claim 1, characterized in that: The compression ratio of the compressor (500) ranges from 1:1.4 to 1:

2.

10. The heat pump energy purification furnace according to claim 1, characterized in that: The heat exchange medium is water.

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