Hydrothermal recycling system

Abstract

The utility model provides a water heat recycling system which comprises a pure water pipe, a washing device, a waste heat recycling mechanism and a heat exchange water tank. The waste heat recycling mechanism is arranged between the pure water pipe and the washing device. The waste heat recycling mechanism comprises a workshop condensate water tank, a waste heat exchanger and a heat exchange heating device; a pure water inlet pipe, a pure water outlet pipe, a condensate water inlet pipe and a condensate water outlet pipe are arranged on the waste heat exchanger, the pure water inlet pipe is communicated with the pure water pipe, and the pure water outlet pipe is communicated with the water inlet pipe of the heat exchange heating device; the condensate water inlet pipe is respectively communicated with water outlets of the workshop condensate water tank and the heat exchange water tank; the condensate water outlet pipe is communicated with the water inlet of the heat exchange water tank, so that the condensate water can repeatedly enter the waste heat exchanger to exchange heat with the pure water, and the waste heat in the condensate water can be more fully recycled.

Description

Technical Field

[0001] This disclosure relates to the technical field of battery production, and in particular to a hydrothermal recycling system. Background Technology

[0002] Currently, the industry mainly uses metal ion co-precipitation to prepare precursor materials such as ternary precursors, lithium iron phosphate precursors, lithium cobalt oxide precursors, and lithium manganese oxide precursors. This necessitates washing these precursor materials with pure water in the production workshop to remove metal ion impurities. During this washing process, the pure water needs to be heated with steam. However, this heating process consumes a large amount of steam, and the utilization rate of steam heat is very low, leading to condensation and the formation of a large amount of condensate carrying residual heat. To reduce the waste of residual heat in the condensate, some manufacturers typically use condensate recovery systems, such as those disclosed in Chinese patent document CN216737937U, to recover the residual heat from the condensate. However, due to structural design limitations, it is difficult to fully recover the residual heat from the condensate. Utility Model Content

[0003] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a hydrothermal reuse system with high waste heat utilization rate of condensate.

[0004] The purpose of this disclosure is achieved through the following technical solution:

[0005] A hydrothermal recycling system, comprising:

[0006] Pure water pipe, the pure water pipe being used to introduce pure water;

[0007] A washing device for washing materials;

[0008] The hydrothermal recycling system also includes a waste heat recycling mechanism and a hot water exchange tank;

[0009] The waste heat recovery mechanism is located between the pure water pipe and the washing device; the waste heat recovery mechanism includes a workshop condensate tank, a waste heat exchanger, and a heat exchange heating device; the waste heat exchanger is equipped with a pure water inlet pipe, a pure water outlet pipe, a condensate inlet pipe, and a condensate outlet pipe, the pure water inlet pipe being connected to the pure water pipe, and the pure water outlet pipe being connected to the inlet pipe of the heat exchange heating device; the condensate inlet pipe is connected to the outlet of the workshop condensate tank and the heat exchange water tank respectively, the workshop condensate tank being used to store condensate formed by steam condensation in the production workshop; the heat exchange heating device is used to heat the pure water, the condensate outlet pipe being connected to the inlet of the heat exchange water tank, and the outlet pipe of the heat exchange heating device being connected to the hot water inlet of the washing device.

[0010] In some embodiments, the waste heat exchanger includes a tank and a heat exchange assembly; the heat exchange assembly is disposed in the tank; the condensate inlet pipe, the condensate outlet pipe, the pure water inlet pipe, and the pure water outlet pipe are all disposed on the tank; the condensate inlet pipe is connected to the condensate outlet pipe through a heat-conducting pipe of the heat exchange assembly, and a heat exchange cavity is formed between the heat-conducting pipe and the inner wall of the tank; the pure water inlet pipe is connected to the pure water outlet pipe through the heat exchange cavity.

[0011] In some embodiments, the heat exchange assembly includes a first partition, a plurality of heat-conducting pipes, and a second partition connected in sequence; the first partition and the second partition are respectively connected to the inner wall of the tank, and together with the inner peripheral wall of the tank, form the heat exchange cavity; a water inlet cavity is formed between the first partition and a first end of the inner wall of the tank, and a water outlet cavity is formed between the second partition and a second end of the inner wall of the tank; the first end of each heat-conducting pipe is connected to the condensate inlet pipe through the water inlet cavity, and the second end of each heat-conducting pipe is connected to the condensate outlet pipe through the water outlet cavity.

[0012] In some embodiments, the heat exchange assembly further includes a vortex-shaped baffle, which is laterally disposed within the heat exchange cavity; the two ends of the vortex-shaped baffle are respectively connected to the first baffle and the second baffle, and divide the heat exchange cavity to form a vortex flow channel; the outermost ring of the vortex flow channel is connected to the pure water inlet pipe, and the innermost ring of the vortex flow channel is connected to the pure water outlet pipe; a plurality of heat-conducting pipes are located within the vortex flow channel and are arranged at intervals along the vortex flow channel.

[0013] In some embodiments, a portion of the pure water outlet pipe is located within the water outlet chamber; the inlet end of the pure water outlet pipe penetrates the second partition and extends to the innermost circle of the vortex channel.

[0014] In some embodiments, the waste heat reuse mechanism further includes a hot pure water storage tank, which is disposed between the heat exchange heating device and the washing device; the outlet pipe of the heat exchange heating device is connected to the inlet of the hot pure water storage tank, and the outlet of the hot pure water storage tank is connected to the hot water inlet of the washing device.

[0015] In some embodiments, the hot water exchange tank is provided with an external conduit; the external conduit is connected to the outlet of the hot water exchange tank and is used to connect water-using equipment.

[0016] In some embodiments, the heat exchange heating device is a plate heat exchanger.

[0017] In some embodiments, the number of waste heat recovery mechanisms is at least two; in any one of the waste heat recovery mechanisms, a temperature sensor is provided on the pure water outlet pipe of the waste heat exchanger, a first solenoid valve is provided on the water inlet pipe of the heat exchange heating device, and a connecting pipe is provided between the temperature sensor and the first solenoid valve on the pure water outlet pipe; a second solenoid valve is provided on the connecting pipe, and the connecting pipe is connected to the pure water inlet pipe of the waste heat exchanger of at least one remaining waste heat recovery mechanism; the temperature sensor is electrically connected to the first solenoid valve and the second solenoid valve respectively.

[0018] In some embodiments, the number of waste heat recovery mechanisms is three, namely a primary waste heat recovery mechanism, a secondary waste heat recovery mechanism, and a tertiary waste heat recovery mechanism; the conductive pipe on the pure water outlet pipe of the waste heat exchanger in the primary waste heat recovery mechanism is connected to the pure water inlet pipe of the waste heat exchanger in the tertiary waste heat recovery mechanism; the conductive pipe on the pure water outlet pipe of the waste heat exchanger in the tertiary waste heat recovery mechanism is connected to the pure water inlet pipe of the waste heat exchanger in the secondary waste heat recovery mechanism; and the conductive pipe on the pure water outlet pipe of the waste heat exchanger in the secondary waste heat recovery mechanism is connected to the pure water inlet pipe of the waste heat exchanger in the primary waste heat recovery mechanism.

[0019] Compared with the prior art, this disclosure has at least the following advantages:

[0020] 1) Since the workshop condensate tank is connected to the condensate inlet pipe of the waste heat exchanger and the pure water pipe is connected to the pure water inlet pipe of the waste heat exchanger, the condensate and pure water formed by steam condensation in the precursor material production workshop can exchange heat in the waste heat exchanger, so that the waste heat energy in the condensate can be absorbed and reused by the pure water.

[0021] 2) Because the condensate outlet of the waste heat exchanger is connected to the inlet of the hot water exchange tank, and the outlet of the hot water exchange tank is connected to the condensate inlet of the waste heat exchanger, the condensate can repeatedly enter the waste heat exchanger to exchange heat with the pure water. In this way, the waste heat in the condensate can be more fully recovered into the pure water.

[0022] 3) After the pure water absorbs the residual heat from the condensate, its temperature rises to approach the temperature required by the washing device. Then, by connecting the pure water outlet pipe of the waste heat exchanger to the inlet pipe of the heat exchange heating device, the pure water, which has already reached a certain temperature, enters the heat exchange heating device for further heating. At this point, the heat exchange heating device only needs to heat the pure water slightly, and the pure water can be used by the washing device, thereby reducing the energy consumption of the washing device. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of a hydrothermal recycling system according to an embodiment of the present disclosure;

[0025] Figure 2 for Figure 1 The diagram shows the structure of the waste heat exchanger in the hydrothermal reuse system.

[0026] Figure 3 for Figure 2 The waste heat exchanger of the hydrothermal reuse system shown is a cross-sectional view at A1-A2.

[0027] Figure 4 This is a schematic diagram of a hydrothermal reuse system according to another embodiment of the present disclosure;

[0028] Figure 5 This is a schematic diagram of a hydrothermal reuse system according to yet another embodiment of the present disclosure.

[0029] Figure label:

[0030] 100. Pure water pipe; 200. Washing device;

[0031] 310. Workshop condensate drain;

[0032] 320. Waste heat exchanger; 3210. Tank body; 3211. Pure water inlet pipe; 3212. Pure water outlet pipe; 321a. Temperature sensor; 321b. Conductor pipe; 321c. Second solenoid valve; 3213. Condensate inlet pipe; 3214. Condensate outlet pipe; 3201. Water inlet chamber; 3202. Water outlet chamber; 3220. Heat exchange assembly; 3221. First baffle; 3222. Heat conduction pipe; 3223. Second baffle; 3224. Vortex baffle; 3203. Heat exchange chamber; 3204. Vortex flow channel; 321. Primary waste heat recovery mechanism; 322. Secondary waste heat recovery mechanism; 323. Tertiary waste heat recovery mechanism;

[0033] 330, Heat exchange heating device; 3301, Water inlet pipe; 331a, First solenoid valve; 3302, Water outlet pipe;

[0034] 340. Pure water storage tank;

[0035] 400. Replace the hot water tank; 410. External pipe; 401. Water inlet; 402. Water outlet. Detailed Implementation

[0036] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0040] Please see Figure 1 An embodiment of the hydrothermal reuse system includes a pure water pipe 100, a washing device 200, a waste heat reuse mechanism, and a heat exchange tank 400. The pure water pipe 100 is used to introduce pure water; the washing device 200 is used to wash materials; the waste heat reuse mechanism is disposed between the pure water pipe 100 and the washing device 200; the waste heat reuse mechanism includes a workshop condensate tank 310, a waste heat exchanger 320, and a heat exchange heating device 330; the waste heat exchanger 320 is provided with a pure water inlet pipe 3211, a pure water outlet pipe 3212, a condensate inlet pipe 3213, and a condensate outlet pipe 3214, through which pure water enters... Pipe 3211 is connected to pure water pipe 100, and pure water outlet pipe 3212 is connected to inlet pipe 3301 of heat exchange heating device 330; condensate inlet pipe 3213 is connected to outlet 402 of workshop condensate tank 310 and heat exchange water tank 400 respectively. Workshop condensate tank 310 is used to store condensate formed by steam condensation in the production workshop; heat exchange heating device 330 is used to heat pure water, condensate outlet pipe 3214 is connected to inlet 401 of heat exchange water tank 400, and outlet pipe 3302 of heat exchange heating device 330 is connected to hot water inlet of washing device 200.

[0041] It is understandable that, since the workshop condensate tank 310 is connected to the condensate inlet pipe 3213 of the waste heat exchanger 320 and the pure water pipe 100 is connected to the pure water inlet pipe 3211 of the waste heat exchanger 320, the condensate and pure water formed by steam condensation in the precursor material production workshop can exchange heat in the waste heat exchanger 320, so that the waste heat energy in the condensate can be absorbed and reused by the pure water.

[0042] It is understandable that, since the condensate outlet pipe 3214 of the waste heat exchanger 320 is connected to the inlet 401 of the hot water exchange tank 400, and the outlet 402 of the hot water exchange tank 400 is connected to the condensate inlet pipe 3213 of the waste heat exchanger 320, the condensate can repeatedly enter the waste heat exchanger 320 to exchange heat with the pure water. In this way, the waste heat in the condensate can be more fully recovered into the pure water.

[0043] It is understandable that after the pure water absorbs the residual heat from the condensate, the temperature of the pure water will rise to approach the pure water temperature required by the washing device 200. Then, by connecting the pure water outlet pipe 3212 of the waste heat exchanger 320 to the inlet pipe 3301 of the heat exchange heating device 330, the pure water that has reached a certain temperature enters the heat exchange heating device 330 for further heating. At this time, the heat exchange heating device 330 only needs to heat the pure water slightly, and the pure water can be used by the washing device 200, thereby reducing the energy consumption of the heat exchange heating device 330.

[0044] In some embodiments, the washing device 200 may be a general-purpose washing machine, washing vessel, or other similar device. This is merely an example and is not intended to limit the specific application of the washing device 200 in the hydrothermal recycling system of this disclosure. The materials washed by the washing device 200 include, but are not limited to, ternary precursors, lithium iron phosphate precursors, lithium cobalt oxide precursors, lithium manganese oxide precursors, ternary cathode materials, lithium iron phosphate, lithium cobalt oxide, and lithium manganese oxide. Those skilled in the art can also apply the washing device 200 to washing other types of materials.

[0045] Please see Figure 2In some embodiments, the waste heat exchanger 320 includes a tank 3210 and a heat exchange assembly 3220; the heat exchange assembly 3220 is disposed inside the tank 3210; a condensate inlet pipe 3213, a condensate outlet pipe 3214, a pure water inlet pipe 3211, and a pure water outlet pipe 3212 are all disposed on the tank 3210; the condensate inlet pipe 3213 is connected to the condensate outlet pipe 3214 through the heat conduction pipe 3222 of the heat exchange assembly 3220, and a heat exchange cavity 3203 is formed between the heat conduction pipe 3222 and the inner wall of the tank 3210; the pure water inlet pipe 3211 is connected to the pure water outlet pipe 3212 through the heat exchange cavity 3203. It can be understood that the condensate inlet pipe 3213 is connected to the condensate outlet pipe 3214 through the heat conduction pipe 3222 of the heat exchange component 3220, so that the condensate can enter the heat conduction pipe 3222 through the condensate inlet pipe 3213. Meanwhile, the pure water inlet pipe 3211 is connected to the pure water outlet pipe 3212 through the heat exchange chamber 3203, so that the pure water can enter the heat exchange chamber 3203 through the pure water inlet pipe 3211 and contact the heat conduction pipe 3222. The heat conduction pipe 3222 conducts the waste heat in the condensate to the pure water, thereby realizing the recovery of waste heat in the condensate.

[0046] Please see Figure 2 In some embodiments, the heat exchange assembly 3220 includes a first partition 3221, a plurality of heat-conducting pipes 3222, and a second partition 3223 connected in sequence; the first partition 3221 and the second partition 3223 are respectively connected to the inner wall of the tank 3210, and together with the inner peripheral wall of the tank 3210, they form a heat exchange cavity 3203; a water inlet cavity 3201 is formed between the first partition 3221 and the first end of the inner wall of the tank 3210, and a water outlet cavity 3202 is formed between the second partition 3223 and the second end of the inner wall of the tank 3210; the first end of each heat-conducting pipe 3222 is connected to the condensate inlet pipe 3213 through the water inlet cavity 3201, and the second end of each heat-conducting pipe 3222 is connected to the condensate outlet pipe 3214 through the water outlet cavity 3202. It is understandable that, since the first end of each heat pipe 3222 is connected to the condensate inlet pipe 3213 through the water inlet chamber 3201, and the second end of each heat pipe 3222 is connected to the condensate outlet pipe 3214 through the water outlet chamber 3202, the condensate entering the water inlet chamber 3201 through the condensate inlet pipe 3213 can enter the heat pipes 3222 through the first end of each heat pipe 3222, and exchange heat more efficiently with the pure water in the heat exchange chamber 3203 through the heat pipes 3222. Finally, the condensate can also flow into the water outlet chamber 3202 and be discharged through the condensate outlet pipe 3214.

[0047] Please refer to the following: Figure 2 and Figure 3In some embodiments, the heat exchange assembly 3220 further includes a vortex-shaped partition 3224, which is laterally disposed within the heat exchange cavity 3203. The two ends of the vortex-shaped partition 3224 are respectively connected to the first partition 3221 and the second partition 3223, and divide the heat exchange cavity 3203 to form a vortex-shaped flow channel 3204. The outermost ring of the vortex-shaped flow channel 3204 is connected to the pure water inlet pipe 3211, and the innermost ring of the vortex-shaped flow channel 3204 is connected to the pure water outlet pipe 3212. A plurality of heat-conducting pipes 3222 are located within the vortex-shaped flow channel 3204 and are arranged at intervals along the vortex-shaped flow channel 3204. It is understandable that, since several heat pipes 3222 are arranged at intervals along the vortex channel 3204, the outermost ring of the vortex channel 3204 is connected to the pure water inlet pipe 3211, and the innermost ring of the vortex channel 3204 is connected to the pure water outlet pipe 3212, the pure water entering the vortex channel 3204 from the pure water inlet pipe 3211 will contact each heat pipe 3222 sequentially from the outside to the inside of the vortex channel 3204, thereby prolonging the heat exchange time between the pure water and the condensate and enhancing the heating effect on the pure water.

[0048] Please see Figure 2 In some embodiments, a portion of the pure water outlet pipe 3212 is located within the water outlet chamber 3202; the inlet end of the pure water outlet pipe 3212 penetrates the second partition 3223 and extends to the innermost ring of the vortex channel 3204. It can be understood that because the heat exchange time between the pure water and condensate is longest in the innermost ring of the vortex channel 3204, and the insulation effect is better due to the layers of vortex partitions 3224, the pure water temperature is highest in the innermost ring of the vortex channel 3204. By extending the inlet end of the pure water outlet pipe 3212 to the innermost ring of the vortex channel 3204, the highest-temperature pure water can be discharged for use by the washing device 200.

[0049] Please see Figure 1 In some embodiments, the waste heat recovery mechanism further includes a hot pure water storage tank 340, which is disposed between the heat exchange heating device 330 and the washing device 200. The outlet pipe 3302 of the heat exchange heating device 330 is connected to the inlet end of the hot pure water storage tank 340, and the outlet end of the hot pure water storage tank 340 is connected to the hot water inlet of the washing device 200. It can be understood that by providing a hot pure water storage tank 340 between the heat exchange heating device 330 and the washing device 200, the heated pure water can be temporarily stored when the demand for hot pure water in the downstream washing device 200 decreases, thereby avoiding waste of the heated pure water.

[0050] Please see Figure 1In some embodiments, an external conduit 410 is provided on the outside of the hot water exchange tank 400; the external conduit 410 is connected to the outlet 402 of the hot water exchange tank 400 and is used to connect water-using equipment. It can be understood that by providing an external conduit 410 on the hot water exchange tank 400, the condensate water that has exhausted its waste heat can be discharged to water-using equipment such as cooling towers and dust collection towers in the workshop, so as to realize the closed-loop use of condensate water.

[0051] In some embodiments, the heat exchange heating device 330 is a plate heat exchanger. In this embodiment, the plate heat exchanger mainly exchanges heat with pure water through steam, which enables the pure water to be heated to the pure water temperature required by the washing device 200 more quickly. Of course, those skilled in the art can use other heat exchangers, and there is no limitation on the specific type of heat exchange heating device 330.

[0052] Please refer to the following: Figure 1 and Figure 4 In some embodiments, the number of waste heat recovery mechanisms is at least two; in any one of the waste heat recovery mechanisms, a temperature sensor 321a is provided on the pure water outlet pipe 3212 of the waste heat exchanger 320, a first solenoid valve 331a is provided on the water inlet pipe 3301 of the heat exchange heating device 330, and a connecting pipe 321b is provided on the pure water outlet pipe 3212 between the temperature sensor 321a and the first solenoid valve 331a; a second solenoid valve 321c is provided on the connecting pipe 321b, and the pure water outlet pipe 3212 is connected to the pure water inlet pipe 3211 of the waste heat exchanger 320 of the remaining at least one waste heat recovery mechanism through the connecting pipe 321b; the temperature sensor 321a is electrically connected to the first solenoid valve 331a and the second solenoid valve 321c respectively. It is understandable that, since the conductive pipe 321b is located on the pure water outlet pipe 3212 between the temperature sensor 321a and the first solenoid valve 331a, and the temperature sensor 321a is electrically connected to the first solenoid valve 331a, the temperature of the pure water in the pure water outlet pipe 3212 of the waste heat exchanger 320 can be detected by the temperature sensor 321a. When the temperature of the pure water in the pure water outlet pipe 3212 is too low, the first solenoid valve 331a receives the signal from the temperature sensor 321a and closes the water inlet pipe 3301 of the heat exchange heating device 330. Meanwhile, since the temperature sensor 321a is also electrically connected to the second solenoid valve 321c on the conductive pipe 321b, the second solenoid valve 321c receives the signal from the temperature sensor 321a and opens the conductive pipe 321b, so that the pure water outlet pipe 3212 of any waste heat heat exchanger 320 in the waste heat recovery mechanism can be connected to the pure water inlet pipe 3211 of the waste heat heat exchanger 320 of the remaining at least one waste heat recovery mechanism. Thus, the pure water that has been heat exchanged by any waste heat heat exchanger 320 can be heat exchanged again by the waste heat heat exchanger 320 of the remaining at least one waste heat recovery mechanism, thereby improving the heating effect of the pure water.

[0053] In one embodiment, the electrical connection can take various forms, such as wired connection or wireless connection. It is understood that the wired connection can be a wire connection or a circuit board connection, etc., and the wireless connection can be a Bluetooth connection or a WIFI (Wireless Fidelity) connection, etc. The specific connection method is not limited, and those skilled in the art can also make adjustments as needed.

[0054] It should be noted that the methods by which the first solenoid valve 331a and the second solenoid valve 321c receive signals from the temperature sensor 321a are existing technologies and are not within the scope of protection of this application. This application only protects the various components of the hydrothermal reuse system and their positions and connections.

[0055] Please refer to the following: Figure 4 and Figure 5 In some embodiments, there are three waste heat recovery mechanisms, namely a primary waste heat recovery mechanism 321, a secondary waste heat recovery mechanism 322, and a tertiary waste heat recovery mechanism 323. The conductive pipe on the pure water outlet pipe of the waste heat exchanger in the primary waste heat recovery mechanism 321 is connected to the pure water inlet pipe of the waste heat exchanger in the tertiary waste heat recovery mechanism 323. The conductive pipe on the pure water outlet pipe of the waste heat exchanger in the tertiary waste heat recovery mechanism 323 is connected to the pure water inlet pipe of the waste heat exchanger in the secondary waste heat recovery mechanism 322. The conductive pipe on the pure water outlet pipe of the waste heat exchanger in the secondary waste heat recovery mechanism 322 is connected to the pure water inlet pipe of the waste heat exchanger in the primary waste heat recovery mechanism 321. It is understandable that, because the conductive pipe on the pure water outlet pipe of the waste heat exchanger in the first-stage waste heat recovery mechanism 321 is connected to the pure water inlet pipe of the waste heat exchanger in the third-stage waste heat recovery mechanism 323, the pure water after heat exchange in the first-stage waste heat recovery mechanism 321 can enter the waste heat exchanger in the third-stage waste heat recovery mechanism 323 for further heat exchange. Furthermore, by connecting the conductive pipe on the pure water outlet pipe of the waste heat exchanger in the third-stage waste heat recovery mechanism 323 to the pure water inlet pipe of the waste heat exchanger in the second-stage waste heat recovery mechanism 322, the pure water after heat exchange in the third-stage waste heat recovery mechanism 321 can enter the waste heat exchanger in the third-stage waste heat recovery mechanism 323 for further heat exchange. The pure water that has been heated by the waste heat exchanger in the primary waste heat recovery mechanism 323 can enter the waste heat exchanger in the secondary waste heat recovery mechanism 322 for another heat exchange. Since the conductor on the pure water outlet pipe of the waste heat exchanger in the secondary waste heat recovery mechanism 322 is connected to the pure water inlet pipe of the waste heat exchanger in the primary waste heat recovery mechanism 321, the pure water that has been heated by the waste heat exchanger in the secondary waste heat recovery mechanism 322 can re-enter the waste heat exchanger in the primary waste heat recovery mechanism 321 for heat exchange, so as to achieve the effect of circulating heat exchange and heating of pure water.

[0056] In one embodiment, for better understanding, the hydrothermal reuse system of the above embodiment will now be described as follows:

[0057] The condensate formed by steam condensation in the production workshop, which stores precursor materials, is stored in the workshop condensate tank 310. The condensate carries a large amount of waste heat. The condensate enters the waste heat exchanger 320 through the condensate inlet pipe 3213. The pure water in the pure water pipe 100 enters the waste heat exchanger 320 through the pure water inlet pipe 3211. The condensate and pure water exchange heat in the waste heat exchanger 320 to heat the pure water. The condensate after heat exchange enters the hot water exchange tank 400 for buffering through the condensate outlet pipe 3214. The condensate in the hot water exchange tank 400 continues to enter the waste heat exchanger 320 through the condensate inlet pipe 3213 to exchange heat with the pure water, thereby improving the utilization rate of waste heat in the condensate.

[0058] Compared with the prior art, this disclosure has at least the following advantages:

[0059] 1) Since the workshop condensate tank 310 is connected to the condensate inlet pipe 3213 of the waste heat exchanger 320 and the pure water pipe 100 is connected to the pure water inlet pipe 3211 of the waste heat exchanger 320, the condensate and pure water formed by steam condensation in the precursor material production workshop can exchange heat in the waste heat exchanger 320, so that the waste heat energy in the condensate can be absorbed and reused by the pure water.

[0060] 2) Because the condensate outlet pipe 3214 of the waste heat exchanger 320 is connected to the inlet 401 of the hot water exchange tank 400, and the outlet 402 of the hot water exchange tank 400 is connected to the condensate inlet pipe 3213 of the waste heat exchanger 320, the condensate can repeatedly enter the waste heat exchanger 320 to exchange heat with the pure water. In this way, the waste heat in the condensate can be more fully recovered into the pure water.

[0061] 3) After the pure water absorbs the residual heat from the condensate, its temperature rises to approach the temperature required by the washing device 200. Then, by connecting the pure water outlet pipe 3212 of the waste heat exchanger 320 to the inlet pipe 3301 of the heat exchange heating device 330, the pure water, which has already reached a certain temperature, enters the heat exchange heating device 330 for further heating. At this point, the heat exchange heating device 330 only needs to heat the pure water slightly, and the pure water can be used by the washing device 200, thereby reducing the energy consumption of the washing device 200.

[0062] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A hydrothermal recycling system, comprising: A pure water pipe (100) is used to introduce pure water; A washing device (200) for washing materials; The system is characterized in that it further includes a waste heat recovery mechanism and a hot water exchange tank (400); The waste heat recovery mechanism is located between the pure water pipe (100) and the washing device (200); the waste heat recovery mechanism includes a workshop condensate tank (310), a waste heat exchanger (320), and a heat exchange heating device (330); the waste heat exchanger (320) is provided with a pure water inlet pipe (3211), a pure water outlet pipe (3212), a condensate inlet pipe (3213), and a condensate outlet pipe (3214), the pure water inlet pipe (3211) being connected to the pure water pipe (100), and the pure water outlet pipe (3212) being connected to the heat exchange heating device (330). Water inlet pipe (3301); the condensate inlet pipe (3213) is connected to the outlet (402) of the workshop condensate tank (310) and the hot water exchange tank (400), respectively. The workshop condensate tank (310) is used to store condensate formed by steam condensation in the production workshop. The heat exchange heating device (330) is used to heat the pure water. The condensate outlet pipe (3214) is connected to the inlet (401) of the hot water exchange tank (400). The outlet pipe (3302) of the heat exchange heating device (330) is connected to the hot water inlet of the washing device (200).

2. The hydrothermal reuse system according to claim 1, characterized in that, The waste heat exchanger (320) includes a tank (3210) and a heat exchange assembly (3220); the heat exchange assembly (3220) is disposed inside the tank (3210); the condensate inlet pipe (3213), the condensate outlet pipe (3214), the pure water inlet pipe (3211), and the pure water outlet pipe (3212) are all disposed on the tank (3210); the condensate inlet pipe (3213) is connected to the condensate outlet pipe (3214) through the heat-conducting pipe (3222) of the heat exchange assembly (3220), and a heat exchange cavity (3203) is formed between the heat-conducting pipe (3222) and the inner wall of the tank (3210); the pure water inlet pipe (3211) is connected to the pure water outlet pipe (3212) through the heat exchange cavity (3203).

3. The hydrothermal reuse system according to claim 2, characterized in that, The heat exchange assembly (3220) includes a first partition (3221), a plurality of heat-conducting pipes (3222), and a second partition (3223) connected in sequence; the first partition (3221) and the second partition (3223) are respectively connected to the inner wall of the tank (3210), and together with the inner peripheral wall of the tank (3210), they form the heat exchange cavity (3203); the first partition (3221) and the inner wall of the tank (3210) A water inlet cavity (3201) is formed between the first ends of the wall, and a water outlet cavity (3202) is formed between the second partition (3223) and the second end of the inner wall of the tank (3210); the first end of each heat-conducting pipe (3222) is connected to the condensate inlet pipe (3213) through the water inlet cavity (3201), and the second end of each heat-conducting pipe (3222) is connected to the condensate outlet pipe (3214) through the water outlet cavity (3202).

4. The hydrothermal reuse system according to claim 3, characterized in that, The heat exchange assembly (3220) further includes a vortex-shaped partition (3224), which is laterally arranged in the heat exchange cavity (3203). The two ends of the vortex-shaped partition (3224) are respectively connected to the first partition (3221) and the second partition (3223), and the heat exchange cavity (3203) is divided to form a vortex flow channel (3204). The outermost ring of the vortex flow channel (3204) is connected to the pure water inlet pipe (3211), and the innermost ring of the vortex flow channel (3204) is connected to the pure water outlet pipe (3212). A plurality of heat-conducting pipes (3222) are located in the vortex flow channel (3204) and are arranged at intervals along the vortex flow channel (3204).

5. The hydrothermal reuse system according to claim 4, characterized in that, A portion of the pure water outlet pipe (3212) is located inside the water outlet chamber (3202); the water inlet end of the pure water outlet pipe (3212) passes through the second partition (3223) and extends to the innermost circle of the vortex channel (3204).

6. The hydrothermal reuse system according to claim 1, characterized in that, The waste heat reuse mechanism also includes a hot pure water storage tank (340), which is located between the heat exchange heating device (330) and the washing device (200); the outlet pipe (3302) of the heat exchange heating device (330) is connected to the inlet end of the hot pure water storage tank (340), and the outlet end of the hot pure water storage tank (340) is connected to the hot water inlet of the washing device (200).

7. The hydrothermal reuse system according to claim 1, characterized in that, The hot water exchange tank (400) is provided with an external conduit (410); the external conduit (410) is connected to the water outlet (402) of the hot water exchange tank (400), and the external conduit (410) is used to connect water-using equipment.

8. The hydrothermal reuse system according to claim 1, characterized in that, The heat exchange heating device (330) is a plate heat exchanger.

9. The hydrothermal reuse system according to claim 1, characterized in that, The number of waste heat recovery mechanisms is at least two; in any one of the waste heat recovery mechanisms, a temperature sensor (321a) is provided on the pure water outlet pipe (3212) of the waste heat exchanger (320), a first solenoid valve (331a) is provided on the water inlet pipe (3301) of the heat exchange heating device (330), and a connecting pipe (321b) is provided on the pure water outlet pipe (3212) between the temperature sensor (321a) and the first solenoid valve (331a); a second solenoid valve (321c) is provided on the connecting pipe (321b), and the pure water outlet pipe (3212) is connected to the pure water inlet pipe (3211) of the waste heat exchanger (320) of the remaining at least one waste heat recovery mechanism through the connecting pipe (321b); the temperature sensor (321a) is electrically connected to the first solenoid valve (331a) and the second solenoid valve (321c) respectively.

10. The hydrothermal reuse system according to claim 9, characterized in that, The waste heat recovery mechanism consists of three parts: a primary waste heat recovery mechanism (321), a secondary waste heat recovery mechanism (322), and a tertiary waste heat recovery mechanism (323). The conductive pipe on the pure water outlet pipe of the waste heat exchanger in the primary waste heat recovery mechanism (321) is connected to the pure water inlet pipe of the waste heat exchanger in the tertiary waste heat recovery mechanism (323). The conductive pipe on the pure water outlet pipe of the waste heat exchanger in the tertiary waste heat recovery mechanism (323) is connected to the pure water inlet pipe of the waste heat exchanger in the secondary waste heat recovery mechanism (322). The conductive pipe on the pure water outlet pipe of the waste heat exchanger in the secondary waste heat recovery mechanism (322) is connected to the pure water inlet pipe of the waste heat exchanger in the primary waste heat recovery mechanism (321).

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