Waste heat recycling device based on autoclave water cooling system

Abstract

The invention discloses a waste heat recycling device based on an autoclave water cooling system, belongs to the field of autoclave waste heat recycling, and aims to solve the problem that waste heat of an autoclave cannot be fully and effectively utilized in the prior art. The waste heat recycling device comprises a hot steam recycling tank and a hot water recycling device, a hot steam outlet of a precooling heat exchanger of the autoclave is connected with a hot steam inlet of the steam recycling tank, and a hot water outlet of the steam recycling tank is connected with a hot water inlet of a lithium bromide absorption type refrigerating unit of the air conditioning system. A warm water outlet of the lithium bromide absorption type refrigerating unit is connected with a warm water inlet of the steam recovery tank; a hot water inlet of the hot water recovery device is connected with a hot water outlet of the main cold heat exchanger of the autoclave, and a hot water outlet of the hot water recovery device is connected with a hot water inlet of the heating heat exchanger of the air-conditioning system. The device can be used for waste heat utilization of the autoclave.

Description

Technical Field

[0001] This invention belongs to the field of autoclave waste heat recovery, and particularly relates to a waste heat recovery and utilization device based on an autoclave water cooling system. Background Technology

[0002] The autoclave is a key process equipment for hot pressing composite material components. The autoclave is equipped with a main cooling heat exchanger and a pre-cooling heat exchanger, both of which are supplied with water from a water tank.

[0003] The process involves using a precooling heat exchanger to reduce the temperature inside the autoclave from its highest temperature to around 120°C. After the water in the precooling heat exchanger is heated, it becomes hot steam and is then discharged into the atmosphere through the exhaust port. The main cooling heat exchanger is used to reduce the temperature inside the autoclave from 120°C to ambient temperature. The hot return water obtained after the water in the main cooling heat exchanger is cooled by the cooling tower and then returns to the water tank, forming a cycle.

[0004] It should be noted that during the cooling process of the autoclave, the heat from the generated steam is directly discharged into the surrounding environment, while the hot return water needs to be cooled using additional cooling capacity, resulting in a waste of residual heat. Summary of the Invention

[0005] Based on the above analysis, the present invention aims to provide a waste heat recovery and utilization device based on a hot autoclave water cooling system to solve the problem that the waste heat of the hot autoclave cannot be fully and effectively utilized in the prior art.

[0006] This invention provides a waste heat recovery and utilization device based on a hot autoclave water cooling system, including a hot steam recovery tank and a hot water recovery device. The hot steam outlet of the precooling heat exchanger of the autoclave is connected to the hot steam inlet of the steam recovery tank, the hot water outlet of the steam recovery tank is connected to the hot water inlet of the lithium bromide absorption chiller of the air conditioning system, and the warm water outlet of the lithium bromide absorption chiller is connected to the warm water inlet of the steam recovery tank.

[0007] The hot water inlet of the hot water recovery device is connected to the hot water outlet of the main cooling heat exchanger of the autoclave, and the hot water outlet of the hot water recovery device is connected to the hot water inlet of the heating heat exchanger of the air conditioning system.

[0008] Furthermore, the waste heat recovery and utilization device also includes a cooling tower, and the hot water outlet of the main heat exchanger is connected to the hot water inlet of the cooling tower.

[0009] Furthermore, the waste heat recovery and utilization device also includes a cooling water tank, with the cold water outlet of the cooling tower connected to the cold water inlet of the cooling water tank, and the cold water outlet of the cooling water tank connected to the cold water inlet of the preheating heat exchanger and the cold water inlet of the main cooling heat exchanger, respectively.

[0010] Furthermore, the waste heat recovery and utilization device also includes a temperature sensor installed at the hot water outlet of the main heat exchanger to detect the temperature of the hot return water flowing out of the hot water outlet of the main heat exchanger.

[0011] Furthermore, the waste heat recovery and utilization device also includes a pre-cooling water supply pump, which is located on the connecting pipeline between the cooling water tank and the pre-cooling heat exchanger.

[0012] Furthermore, the waste heat recovery and utilization device also includes a main cooling water supply pump, which is located on the connecting pipeline between the cooling water tank and the main cooling heat exchanger.

[0013] Furthermore, the steam recovery tank includes a tank body and a steam nozzle disposed within the tank body.

[0014] Furthermore, steam nozzles are opened on the side wall of the steam nozzle, the inlet of the steam nozzle is connected to the hot steam outlet of the precooling heat exchanger, and the steam nozzle is connected to the inner cavity of the tank through the steam nozzles.

[0015] Furthermore, a hot water outlet and a warm water inlet are provided on the side wall of the tank.

[0016] Furthermore, the steam recovery tank also includes a check valve located at the inlet of the steam nozzle.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] A) The waste heat recovery and utilization device based on the autoclave water cooling system provided by the present invention uses the waste heat of hot steam generated in the precooling heat exchanger of the autoclave to drive the operation of the lithium bromide absorption chiller, so that the lithium bromide absorption chiller produces cold water to provide a cold source for the air conditioning system, which can realize the effective utilization of hot steam waste heat and reduce the thermal impact on the surrounding environment of the autoclave.

[0019] B) The waste heat recovery and utilization device based on the autoclave water cooling system provided by the present invention directly introduces the hot return water generated in the main cold heat exchanger of the autoclave into the heating heat exchanger to provide a heat source for the air conditioning system. It can realize the effective utilization of the waste heat of the hot return water, reduce the need for cooling tower cooling, appropriately reduce the specifications of the cooling tower, and reduce the energy consumption of the cooling tower.

[0020] C) The waste heat recovery and utilization device based on the autoclave water cooling system provided by the present invention can realize the cooling and heating of the air conditioning system by utilizing the waste heat of hot steam generated in the precooling heat exchanger and the hot return water generated in the main cooling heat exchanger respectively. It can effectively improve the comprehensive utilization rate of waste heat in the autoclave, thereby reducing energy waste, ensuring long-term stable operation, and reducing the production cost of enterprises.

[0021] D) The waste heat recovery and utilization device based on the autoclave water cooling system provided by the present invention can simultaneously collect hot steam and hot return water from multiple autoclaves located in relatively concentrated positions. This not only increases the operational stability of the waste heat recovery and utilization device and reduces the fluctuations caused by the cooling start-up and shutdown process of a single autoclave, but also improves the utilization rate of the waste heat recovery and utilization device.

[0022] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0023] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0024] Figure 1 This is a schematic diagram of the waste heat recovery and utilization device based on the autoclave water cooling system provided in Embodiment 1 of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the hot steam recovery tank in the waste heat recovery and utilization device based on the autoclave water cooling system provided in Embodiment 2 of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the hot steam recovery tank in the waste heat recovery and utilization device based on the autoclave water cooling system provided in Embodiment 3 of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the hot steam recovery tank in the waste heat recovery and utilization device based on the autoclave water cooling system provided in Embodiment 4 of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the first and second warm water vortex baffles in the waste heat recovery and utilization device based on the autoclave water cooling system provided in Embodiment 4 of the present invention.

[0029] Figure label:

[0030] 1-Refrigeration heat exchanger; 2-Heating heat exchanger; 3-Lithium bromide absorption chiller; 4-Hot steam recovery tank; 401-Tank body; 402-Steam nozzle; 403-Upper baffle; 404-Lower baffle; 405-First warm water vortex baffle; 406-Second warm water vortex baffle; 5-Hot water recovery device; 6-Cooling tower; 7-Cooling water tank; 8-Recovery valve; 9-Return valve; 10-Pre-cooling water supply pump; 11-Main cooling water supply pump; 12-Pre-cooling heat exchanger; 13-Main cooling heat exchanger. Detailed Implementation

[0031] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0032] Example 1

[0033] This embodiment provides a waste heat recovery and utilization device based on a thermostatic tank water cooling system. (See [link]) Figure 1 The aforementioned waste heat recovery and utilization device includes a hot steam recovery tank 4 and a hot water recovery device 5. Correspondingly, the hot steam outlet of the precooling heat exchanger 12 of the autoclave is connected to the hot steam inlet of the steam recovery tank, the hot water outlet of the steam recovery tank is connected to the hot water inlet of the lithium bromide absorption chiller 3 of the air conditioning system, and the warm water outlet of the lithium bromide absorption chiller 3 is connected to the warm water inlet of the steam recovery tank.

[0034] The hot water inlet of the hot water recovery device 5 is connected to the hot water outlet of the main cooling heat exchanger 13 of the autoclave, and the hot water outlet of the hot water recovery device 5 is connected to the hot water inlet of the heating heat exchanger 2 of the air conditioning system.

[0035] It should be noted that the air conditioning system includes a refrigeration heat exchanger 1, a heating heat exchanger 2, and a lithium bromide absorption chiller 3. The chilled water outlet of the lithium bromide absorption chiller 3 is connected to the chilled water inlet of the refrigeration heat exchanger 1, and the warm water inlet of the lithium bromide absorption chiller 3 is connected to the hot water outlet of the refrigeration heat exchanger 1.

[0036] In practice, the waste heat recovery method using a waste heat recovery and utilization device based on a thermostatic tank water cooling system has the following two scenarios.

[0037] Specifically, one application is mainly for air conditioning cooling, and includes the following steps:

[0038] Step a: In the first cooling stage of the autoclave (i.e., from the highest temperature to about 120°C), the hot steam generated in the precooling heat exchanger 12 is supplied to the hot steam recovery tank 4 to exchange heat with the water in the hot steam recovery tank 4, so that the water temperature in the hot steam recovery tank 4 rises to above 85°C.

[0039] Step b: The heated water in the hot steam recovery tank 4 is supplied from the hot water outlet of the hot steam recovery tank 4 into the lithium bromide absorption chiller 3 through the hot water inlet of the lithium bromide absorption chiller 3, thereby cooling the water in the lithium bromide absorption chiller 3.

[0040] Step c: The cooled water in the lithium bromide absorption chiller 3 is supplied from the cold water outlet of the lithium bromide absorption chiller 3 to the cold water inlet of the refrigeration heat exchanger 1 to achieve air conditioning cooling.

[0041] Another application, primarily for heating in air conditioners, involves the following steps:

[0042] Step A: In the second cooling stage of the autoclave (from about 120°C to room temperature), the hot return water generated in the main heat exchanger 13 is supplied from the hot water outlet of the main heat exchanger 13 to the hot water recovery device 5 through the hot water inlet of the hot water recovery device 5.

[0043] Step B: The hot water in the hot water recovery device 5 is supplied from the hot water outlet of the hot water recovery device 5 into the heating heat exchanger 2 through the hot water inlet of the heating heat exchanger 2 to realize the heating function of the air conditioner.

[0044] Compared with the prior art, the waste heat recovery and utilization device based on the autoclave water cooling system provided in this embodiment, on the one hand, uses the waste heat of hot steam generated in the precooling heat exchanger 12 of the autoclave to drive the operation of the lithium bromide absorption chiller 3, so that the lithium bromide absorption chiller 3 produces cold water to provide a cold source for the air conditioning system, which can realize the effective utilization of hot steam waste heat and reduce the thermal impact on the environment around the autoclave.

[0045] On the other hand, the hot return water generated in the main cold heat exchanger 13 of the autoclave is directly introduced into the heating heat exchanger 2 to provide a heat source for the air conditioning system. This enables the effective utilization of the waste heat of the hot return water, reduces the need for cooling tower 6, appropriately reduces the specifications of cooling tower 6, and reduces the energy consumption of cooling tower 6.

[0046] On the other hand, by utilizing the waste heat from the hot steam generated in the precooling heat exchanger 12 and the hot return water generated in the main cooling heat exchanger 13 respectively, the cooling and heating of the air conditioning system can be realized respectively, which can effectively improve the comprehensive utilization rate of the waste heat of the autoclave, thereby reducing energy waste, ensuring long-term stable operation, and reducing the production costs of enterprises.

[0047] It should be noted that in this embodiment, the hot steam recovery tank 4 and the hot water recovery device 5 can simultaneously collect hot steam and hot return water from multiple autoclaves located in relatively concentrated positions. This not only increases the operational stability of the waste heat recovery device and reduces the fluctuations caused by the cooling start-up and shutdown process of a single autoclave, but also improves the utilization rate of the waste heat recovery device.

[0048] Understandably, in order to achieve water supply and return for the autoclave, the aforementioned waste heat recovery and utilization device based on the autoclave water cooling system also includes a cooling tower 6 and a cooling water tank 7. The hot water outlet of the main heat exchanger 13 is connected to the hot water inlet of the cooling tower 6, and the cold water outlet of the cooling tower 6 is connected to the cold water inlet of the cooling water tank 7. The cold water outlet of the cooling water tank 7 is connected to the cold water inlet of the preheating heat exchanger and the cold water inlet of the main heat exchanger 13, respectively. In this way, part of the hot water returned after heat exchange in the main heat exchanger 13 can enter the hot water recovery device 5 for air conditioning heating, and the other part enters the cooling tower 6 for cooling. The cooled water returns to the cooling water tank 7, and is then supplied to the preheating heat exchanger 12 and the main heat exchanger 13, forming a complete circulating water supply system. This structure not only ensures the smooth operation of the autoclave cooling process, but also maximizes the recovery and utilization of waste heat, improving the energy efficiency of the entire system.

[0049] Considering that the hot water recovery device 5 and the cooling tower 6 are arranged in parallel, in order to determine whether the hot return water in the main heat exchanger 13 flows into the cooling tower 6 or the hot water recovery device 5, the above-mentioned waste heat recovery and utilization device based on the autoclave water cooling system also includes a temperature sensor installed at the hot water outlet of the main heat exchanger 13 to detect the temperature of the hot return water flowing out of the hot water outlet of the main heat exchanger 13.

[0050] In order to enable the switching between the hot water recovery device 5 and the cooling tower 6, the waste heat recovery and utilization device based on the autoclave water cooling system also includes a hot water return controller, a recovery valve 8 located on the pipeline connecting the main heat exchanger 13 and the hot water recovery device 5, and a return valve 9 located on the pipeline connecting the main heat exchanger 13 and the cooling tower 6.

[0051] Combined with a temperature sensor, the hot water return controller receives temperature data collected by the temperature sensor at the hot water outlet of the main cooling heat exchanger 13, and determines whether the temperature data is above a temperature threshold, for example, above 60°C. If so, the hot water return controller controls the recovery valve 8 to open and the return valve 9 to close, and the hot water returns to the hot water recovery device 5 for heating in the air conditioner. If not, the hot water return controller controls the return valve 9 to open and the recovery valve 8 to close, and the hot water returns to the cooling tower 6. After cooling, it circulates to the cooling water tank 7 for cooling the main cooling heat exchanger 13 and the pre-cooling heat exchanger 12.

[0052] In this way, through the coordinated operation of temperature sensors and hot water controllers, the flow direction of the hot water can be precisely determined based on its temperature, thereby achieving intelligent distribution of the hot water. When the hot water temperature is high, reaching the set temperature threshold (e.g., above 60°C), the hot water flows into the hot water recovery device 5, thus providing a heat source for the air conditioning system and effectively utilizing the waste heat of the hot water. When the hot water temperature is low, below the set temperature threshold, the hot water flows into the cooling tower 6 for cooling. The cooled water is then circulated back to the cooling water tank 7, providing the necessary water source for cooling the main cooling heat exchanger 13 and the pre-cooling heat exchanger 12. This intelligent hot water distribution method not only improves the comprehensive utilization rate of waste heat from the autoclave but also ensures the stable operation of the entire system.

[0053] In order to facilitate the smooth supply of cold water from the cooling water tank 7 to the precooling heat exchanger 12 and the main cooling heat exchanger 13, the waste heat recovery and utilization device based on the autoclave water cooling system also includes a precooling water supply pump 10 and a main cooling water supply pump 11. The precooling water supply pump 10 is located on the connecting pipeline between the cooling water tank 7 and the precooling heat exchanger 12, and pressurizes the cold water to provide the flow power for the cold water to be supplied into the precooling heat exchanger 12. The main cooling water supply pump 11 is located on the connecting pipeline between the cooling water tank 7 and the main cooling heat exchanger 13, and provides the flow power for the cold water to be supplied into the main cooling heat exchanger 13.

[0054] Example 2

[0055] This embodiment provides a waste heat recovery and utilization device based on a thermostatic tank water cooling system. Its structure is basically the same as that of the waste heat recovery and utilization device based on a thermostatic tank water cooling system provided in Embodiment 1, with the difference being:

[0056] For the structure of the steam recovery tank, see [link / reference]. Figure 2 Specifically, it includes a tank body 401 and a steam nozzle 402. Steam nozzles are provided on the side wall of the steam nozzle 402. The air inlet of the steam nozzle 402 is connected to the hot steam outlet of the precooling heat exchanger 12. The steam nozzle 402 is connected to the inner cavity of the tank body 401 through the steam nozzles. A hot water outlet and a warm water inlet are provided on the side wall of the tank body 401.

[0057] In order to prevent water in the tank 401 from flowing back into the steam nozzle 402, the steam recovery tank also includes a check valve located at the air inlet of the steam nozzle 402.

[0058] In this way, when the hot steam generated by the precooling heat exchanger 12 enters the tank 401 through the steam nozzle 402, the check valve ensures that the water in the tank 401 will not flow back into the steam nozzle 402 due to pressure changes or other reasons, thus ensuring the stable operation of the entire device. At the same time, the steam nozzles on the side wall of the steam nozzle 402 enable the hot steam to exchange heat evenly with the water in the tank 401, improving the heat exchange efficiency and allowing the water in the tank 401 to quickly heat up to the required temperature, providing a stable hot water supply for the subsequent lithium bromide absorption chiller unit 3.

[0059] Example 3

[0060] This embodiment provides a waste heat recovery and utilization device based on a thermostatic tank water cooling system. Its structure is basically the same as that of the waste heat recovery and utilization device based on a thermostatic tank water cooling system provided in Embodiment 2, except that:

[0061] It is worth noting that since the hot water outlet and the warm water inlet are both located in the same tank 401, the direct mixing of warm water and hot water may cause the hot water temperature to drop, making it impossible to achieve the cooling effect of the lithium bromide absorption chiller unit 3.

[0062] Therefore, the aforementioned steam recovery tank also includes an upper baffle 403 and a lower baffle 404 disposed within the tank body 401, see [link / reference]. Figure 3 The upper end of the upper partition 403 is fixedly connected to the top surface of the tank 401, and the lower end of the upper partition 403 is suspended. The lower end of the lower partition 404 is fixedly connected to the bottom surface of the tank 401, and the upper end of the lower partition 404 is suspended. Along the radial direction of the tank 401, the projections of the upper partition 403 and the lower partition 404 overlap. The hot water outlet is located on one side of the tank 401, and the warm water inlet is located on the other side of the tank 401.

[0063] Accordingly, there are multiple steam nozzles 402, and steam nozzles 402 are provided between two adjacent upper partitions 403 and between two adjacent lower partitions 404.

[0064] In this way, inside the tank 401, the upper baffle 403 and the lower baffle 404 divide the internal space of the tank 401 into multiple relatively independent areas. Hot steam is evenly injected into different areas of the tank 401 through the steam nozzles on multiple steam pipes 402 to exchange heat with water. The hot water outlet and the warm water inlet are located on both sides of the tank 401, respectively. Due to the special design of the upper baffle 403 and the lower baffle 404, the warm water gradually turns into hot water without being directly mixed. This ensures that the water temperature flowing out of the hot water outlet remains stable at a high level, meeting the requirements of the lithium bromide absorption chiller unit 3 for hot water temperature and providing a reliable cold source for the air conditioning system.

[0065] Example 4

[0066] This embodiment provides a waste heat recovery and utilization device based on a thermostatic tank water cooling system. Its structure is basically the same as that of the waste heat recovery and utilization device based on a thermostatic tank water cooling system provided in Embodiment 2, except that:

[0067] It is worth noting that, since both the hot water outlet and the warm water inlet are located in the same tank 401, direct mixing of warm and hot water may cause the hot water temperature to drop, thus preventing the lithium bromide absorption chiller unit 3 from achieving its cooling function.

[0068] Therefore, the steam recovery tank also includes a first warm water vortex baffle 405 and a second warm water vortex baffle 406 located at the bottom of the tank body 401, see [link / reference] Figures 4 to 5 The lower ends of the first warm water vortex baffle 405 and the second warm water vortex baffle 406 are both sealed and fixedly connected to the bottom of the tank body 401. The first warm water vortex baffle 405 and the second warm water vortex baffle 406 have the same structure and shape. The first warm water vortex baffle 405 and the second warm water vortex baffle 406 are fitted together layer by layer with gaps, forming two vortex channels that converge on the axis of the tank body 401. The gap between the outermost layer of the first warm water vortex baffle 405 and the second warm water vortex baffle 406 is the first warm water inlet, and the gap between the outermost layer of the second warm water vortex baffle 406 and the first warm water vortex baffle 405 is the second warm water inlet.

[0069] Correspondingly, the steam nozzle 402 is arc-shaped with an arc of 90°, and is located in the gap between the outermost layer of the first warm water vortex baffle 405 and the second warm water vortex baffle 406.

[0070] The hot water outlet is located at the top of tank 401.

[0071] In this way, warm water enters the chain vortex channel through the gap between the outermost layer of the first warm water vortex baffle 405 and the second warm water vortex baffle 406, and the gap between the outermost layer of the second warm water vortex baffle 406 and the first warm water vortex baffle 405. The warm water flowing in the gap between the outermost layer of the first warm water vortex baffle 405 and the second warm water vortex baffle 406 exchanges heat with the hot steam ejected from the steam nozzle 402 to obtain swirling hot water. The warm water flowing in the gap between the outermost layer of the second warm water vortex baffle 406 and the first warm water vortex baffle 405 forms swirling warm water. The swirling hot water and the swirling warm water gradually mix in the tank 401, above the first warm water vortex baffle 405 and the second warm water vortex baffle 406, to obtain hot water with a uniform temperature after mixing, and then flows out from the hot water outlet.

[0072] In this way, through the special design of the first warm water vortex baffle 405 and the second warm water vortex baffle 406, as well as the reasonable arrangement of the arc-shaped steam nozzle 402, the warm water can form an orderly vortex after entering the tank 401, and fully exchange heat with the hot steam, avoiding direct mixing of warm water and hot water. This ensures that the temperature of the hot water flowing out of the hot water outlet is uniform and stable, meeting the strict requirements of the lithium bromide absorption chiller unit 3 for hot water temperature, and providing a reliable cold source guarantee for the air conditioning system.

[0073] Furthermore, the hot water flows out layer by layer from the gap between the first warm water vortex baffle 405 and the second warm water vortex baffle 406, which can reduce the resistance of the first warm water vortex baffle 405 and the second warm water vortex baffle 406 to the flow of warm water while ensuring the uniformity of mixing. This ensures that the warm water can smoothly enter the tank 401 to exchange heat with the hot steam. At the same time, the hot water and warm water can flow in layers from the gaps between the multiple hot water vortex baffles and warm water vortex baffles, and flow out evenly from the center and edges of the vortex channel. Even with swirling flow, a low-pressure area will not be formed in the center of the tank 401, thereby reducing the flow resistance of the hot water and warm water.

[0074] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A waste heat recovery and utilization device based on a thermostatic tank water cooling system, characterized in that, The waste heat recovery and utilization device includes a hot steam recovery tank and a hot water recovery device. The hot steam outlet of the precooling heat exchanger of the autoclave is connected to the hot steam inlet of the steam recovery tank. The hot water outlet of the steam recovery tank is connected to the hot water inlet of the lithium bromide absorption chiller unit of the air conditioning system. The warm water outlet of the lithium bromide absorption chiller unit is connected to the warm water inlet of the steam recovery tank. The hot water inlet of the hot water recovery device is connected to the hot water outlet of the main cooling heat exchanger of the autoclave, and the hot water outlet of the hot water recovery device is connected to the hot water inlet of the heating heat exchanger of the air conditioning system.

2. The waste heat recovery and utilization device based on the autoclave water cooling system according to claim 1, characterized in that, The waste heat recovery and utilization device also includes a cooling tower, and the hot water outlet of the main heat exchanger is connected to the hot water inlet of the cooling tower.

3. The waste heat recovery and utilization device based on the autoclave water cooling system according to claim 2, characterized in that, The waste heat recovery and utilization device also includes a cooling water tank. The cold water outlet of the cooling tower is connected to the cold water inlet of the cooling water tank. The cold water outlet of the cooling water tank is connected to the cold water inlet of the preheating heat exchanger and the cold water inlet of the main cooling heat exchanger, respectively.

4. The waste heat recovery and utilization device based on the autoclave water cooling system according to claim 2, characterized in that, The waste heat recovery and utilization device also includes a temperature sensor installed at the hot water outlet of the main heat exchanger to detect the temperature of the hot return water flowing out of the hot water outlet of the main heat exchanger.

5. The waste heat recovery and utilization device based on the autoclave water cooling system according to claim 2, characterized in that, The waste heat recovery and utilization device also includes a pre-cooling water supply pump, which is located on the connecting pipeline between the cooling water tank and the pre-cooling heat exchanger.

6. The waste heat recovery and utilization device based on the autoclave water cooling system according to claim 2, characterized in that, The waste heat recovery and utilization device also includes a main cooling water supply pump, which is located on the connecting pipeline between the cooling water tank and the main cooling heat exchanger.

7. The waste heat recovery and utilization device based on a thermostatic tank water cooling system according to any one of claims 6, characterized in that, The steam recovery tank includes a tank body and a steam nozzle disposed within the tank body.

8. The waste heat recovery and utilization device based on the autoclave water cooling system according to claim 7, characterized in that, The side wall of the steam nozzle has a steam nozzle hole, the inlet of the steam nozzle is connected to the hot steam outlet of the precooling heat exchanger, and the steam nozzle is connected to the inner cavity of the tank through the steam nozzle hole.

9. The waste heat recovery and utilization device based on the autoclave water cooling system according to claim 8, characterized in that, The tank has a hot water outlet and a warm water inlet on its side wall.

10. The waste heat recovery and utilization device based on the autoclave water cooling system according to claim 7, characterized in that, The steam recovery tank also includes a check valve located at the inlet of the steam nozzle.

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