Intelligent caustic soda flake machine with heat energy recovery function
By using heat transfer oil as the heat exchange medium in the intelligent caustic soda flake machine, the problem of heat loss during the cooling and solidification of molten caustic soda is solved, enabling the recovery and reuse of heat energy, reducing production costs and improving system stability.
Patent Information
- Application Number
- CN202520406385.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-06
AI Technical Summary
Existing intelligent caustic soda flake machines suffer from significant heat loss during the cooling and solidification of molten caustic soda, increasing production costs and being detrimental to environmental protection.
Using heat transfer oil as the heat exchange medium to replace traditional cooling water, the drum and molten alkali are cooled by the heat transfer oil, realizing the recovery and utilization of heat energy. The heat transfer oil can work stably at high temperatures, obtain more heat energy and reuse it.
It achieves a high degree of heat recovery, saves production costs, promotes energy conservation and environmental protection, stabilizes pipeline system pressure, and makes heat management more effective.
Smart Images
Figure CN223874991U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a piece machine technical field, concretely relates to intelligent piece caustic soda machine with heat energy recycling function. BACKGROUND
[0002] The intelligent piece caustic soda machine is also called intelligent solid caustic soda forming machine or intelligent piece machine, and it is a kind of intelligent mechanical equipment specially used for cooling and preparing molten caustic soda into piece caustic soda, and it has wide application in chemical industry.
[0003] During the working process of the intelligent piece caustic soda machine, the high-temperature molten caustic soda after evaporation and concentration is sent into the caustic soda tank of the piece caustic soda machine for temporary storage, the lowest part of the rotating drum of the piece caustic soda machine is immersed in the molten caustic soda, when the rotating drum rotates, a part of the molten caustic soda is wrapped and uniformly adhered to the surface of the rotating drum to form a molten caustic soda layer, and then with the rotation of the rotating drum, the caustic soda adhered to the rotating drum is gradually cooled and solidified to form a thin solid caustic soda film, and the outer side of the rotating drum is provided with a scraper device, when the cooled solid caustic soda reaches the scraper device, the scraper device scrapes the solidified caustic soda film from the surface of the rotating drum in the form of piece, and finally forms the required piece caustic soda product.
[0004] During the above process, the temperature of the molten caustic soda after evaporation and concentration, i.e. the molten caustic soda in the caustic soda tank, is as high as more than 400 degrees, and after the high-temperature molten caustic soda is cooled and solidified on the rotating drum, the temperature of the solid caustic soda is only more than 60 degrees, so there is a great loss of heat energy in this process, and the direct loss of this part of heat energy not only greatly increases the production cost, but also is very harmful to environmental protection. UTILITY MODEL CONTENTS
[0005] The utility model intends to provide an intelligent piece caustic soda machine with heat energy recycling function to recycle and utilize the heat energy in the working process of the piece caustic soda machine, and solve the problem of great heat energy loss existing in the existing piece caustic soda machine.
[0006] To achieve the above purpose, the utility model adopts the following technical scheme: an intelligent piece caustic soda machine with heat energy recycling function, comprising a rotating drum, an oil storage tank is arranged outside the rotating drum, the oil storage tank is used for storing heat conducting oil, and the heat conducting oil is used for cooling and temperature reduction of the rotating drum; an oil supply pipeline is installed in the rotating drum, one end of the oil supply pipeline penetrates through the rotating drum and is connected with the oil storage tank, and the other end of the oil supply pipeline is located in the rotating drum and is connected with a spray head; the rotating drum is also connected with a heat conducting oil circulation pipeline, the starting end of the heat conducting oil circulation pipeline is connected with the rotating drum, and the terminal end of the heat conducting oil circulation pipeline is connected with the oil supply pipeline; a heat exchange unit is arranged on the heat conducting oil circulation pipeline.
[0007] The principle behind this solution is as follows: During the production of caustic soda flakes, the temperature of the molten caustic soda entering the caustic soda tank reaches over 400 degrees Celsius. During the cooling and solidification process of the molten caustic soda in the drum, cooling water is typically used as the heat exchange medium to cool the inner surface of the drum, both to ensure sufficient cooling and solidification and to prevent cracking and deformation due to temperature differences. However, during this cooling process, the heat energy released by the molten caustic soda is directly lost, which wastes production costs and is detrimental to energy conservation and environmental protection. Currently, no one in the field has conducted research on the recovery of the heat energy released during the cooling and solidification of molten caustic soda in caustic soda flake machines. This is mainly because the cooling water acquires relatively little heat energy during the cooling of the drum and molten caustic soda, resulting in a low temperature after heat exchange, making it unsuitable for recycling.
[0008] This solution innovatively uses heat transfer oil instead of traditional cooling water as the heat exchange medium for cooling the drum and molten caustic soda. Compared to traditional cooling water, heat transfer oil can withstand temperatures exceeding 300°C or even higher without decomposition or deterioration, thus enabling stable operation in high-temperature environments. This is particularly suitable for handling temperatures as high as approximately 400°C transferred from the surface of the caustic soda flake machine drum. Cooling the drum and molten caustic soda with heat transfer oil allows the heat exchange medium to acquire more heat energy, thereby achieving a greater degree of heat recovery. The heat exchange medium, having acquired more heat energy, flows to the heat exchange unit for heat exchange with other equipment or substances, thus realizing the reuse of recovered heat energy and giving the caustic soda flake machine a heat recovery function.
[0009] Furthermore, when using traditional cooling water as the heat exchange medium, it is easy to evaporate into steam under high temperature conditions, leading to system pressure fluctuations and energy loss. However, this situation does not occur when using heat transfer oil as the heat exchange medium in this solution. Therefore, it can be transferred more stably in the pipeline and heat can be managed more effectively.
[0010] The advantages of this solution are:
[0011] 1. Using heat transfer oil as the heat exchange medium, compared with traditional cooling water, it can absorb more heat energy, thereby realizing the recovery and utilization of the heat energy lost by the caustic soda machine to a greater extent, which not only greatly saves production costs, but also promotes energy conservation and environmental protection.
[0012] 2. Using heat transfer oil as the heat exchange medium results in more stable pipeline system pressure compared to cooling water, enabling more effective heat management.
[0013] Preferably, as an improvement, the oil supply pipeline comprises a high-temperature oil supply pipeline, the heat-conducting oil circulation pipeline comprises a high-temperature circulation pipeline, a high-temperature area is arranged on the rotating drum, the high-temperature oil supply pipeline is arranged in a region corresponding to the high-temperature area, a starting end of the high-temperature circulation pipeline is connected to the rotating drum and a terminal end of the high-temperature circulation pipeline is connected to the high-temperature oil supply pipeline and is used for circulating the heat-conducting oil in the high-temperature area, and the heat exchange unit comprises a high-temperature heat exchange unit arranged on the high-temperature circulation pipeline.
[0014] Through the above scheme, when the rotating drum entrains the molten alkali from the alkali tank, the molten alkali on the rotating drum still has a high temperature in the initial stage, and the temperature of the molten alkali continuously decreases and solidifies with the continuous rotation of the rotating drum, so the temperature of the surface of the rotating drum and the molten alkali on the rotating drum changes in stages. The high-temperature area in the present scheme corresponds to a region corresponding to the initial stage when the rotating drum entrains the molten alkali from the alkali tank. Since the temperature of the rotating drum and the molten alkali in this region is relatively high, it has more value for heat energy recycling. The high-temperature oil supply pipeline exchanges heat with the region corresponding to the high-temperature area, and the heat-conducting oil with more heat is flowed to the high-temperature heat exchange unit through the high-temperature circulation pipeline and is used for heat exchange of other substances in the high-temperature heat exchange unit, thereby realizing recycling and reuse of the heat energy of the high-temperature area.
[0015] Preferably, as an improvement, a high-temperature oil pump is further arranged on the high-temperature circulation pipeline, and the high-temperature oil pump is located between the flake caustic soda machine and the high-temperature heat exchange unit.
[0016] Through the above scheme, the high-temperature oil pump is used for pumping the heat-conducting oil, ensuring the flow pressure of the heat-conducting oil, so that the heat-conducting oil can flow smoothly in the high-temperature circulation pipeline and enter the high-temperature heat exchange unit.
[0017] Preferably, as an improvement, the high-temperature heat exchange unit is a steam boiler, and the heat-conducting oil introduced into the steam boiler from the high-temperature circulation pipeline is used for heating the steam boiler and generating steam.
[0018] Through the above scheme, after the heat-conducting oil absorbs the heat released by the rotating drum and the molten alkali, the heat-conducting oil is used for heating the steam boiler, so that the steam boiler generates steam and supplies the steam to the alkali production system, thereby reducing the energy consumption of the alkali production system and saving production cost.
[0019] Preferably, as an improvement, the oil supply pipeline further comprises a low-temperature oil supply pipeline, the heat-conducting oil circulation pipeline further comprises a low-temperature circulation pipeline, a low-temperature area is further arranged on the rotating drum, the low-temperature oil supply pipeline is arranged in a region corresponding to the low-temperature area, a starting end of the low-temperature circulation pipeline is connected to the rotating drum and a terminal end of the low-temperature circulation pipeline is connected to the low-temperature oil supply pipeline and is used for circulating the heat-conducting oil in the low-temperature area, and the heat exchange unit further comprises a low-temperature heat exchange unit arranged on the low-temperature circulation pipeline.
[0020] Through the above scheme, when the rotating drum entrains the molten alkali from the alkali tank, the molten alkali on the rotating drum still has a high temperature in the initial stage, and the temperature of the molten alkali continuously decreases and finally solidifies with the continuous rotation of the rotating drum, so the temperature of the surface of the rotating drum and the molten alkali on the rotating drum changes in stages, and the low-temperature area in the scheme corresponds to the area corresponding to the later stage when the rotating drum entrains the molten alkali from the alkali tank, that is, the area close to the scraper of the rotating drum, and the temperature of this area is still more than 150 degrees, which still has a certain heat energy recycling value. The low-temperature oil supply pipeline exchanges heat with the area corresponding to the low-temperature area, and the heat of the heat-conducting oil after heat exchange flows to the low-temperature heat exchange unit through the low-temperature circulating pipeline, and is used for heat exchange of other substances in the low-temperature heat exchange unit, so as to realize recycling of the heat energy of the low-temperature area. Through the two recycling paths for the high-temperature area and the low-temperature area respectively, heat recovery is carried out at the same time, so that the heat energy recycling of the flake alkali machine is more targeted, the heat energy recycling effect is better, and the recycling degree is larger, and the production cost is further saved.
[0021] Preferably, as an improvement, a low-temperature oil pump is further arranged on the low-temperature circulating pipeline, and the low-temperature oil pump is located between the flake alkali machine and the low-temperature heat exchange unit.
[0022] Through the above scheme, the low-temperature oil pump is used for pumping the heat-conducting oil, ensuring the pressure of the heat-conducting oil, so that the heat-conducting oil can flow smoothly in the low-temperature circulating pipeline and enter the low-temperature heat exchange unit.
[0023] Preferably, as an improvement, the low-temperature heat exchange unit is a circulating water cooler, and the heat-conducting oil introduced into the circulating water cooler by the low-temperature circulating pipeline is used for heat exchange of circulating water in the circulating water cooler.
[0024] Through the above scheme, after the heat-conducting oil absorbs the heat released by the low-temperature area of the rotating drum, the heat-conducting oil enters the circulating water cooler and is used for heat exchange of the circulating water, so that the circulating water can be used in circulation at a predetermined temperature, thereby reducing the energy consumption of the alkali production system and saving production cost. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 It is a structure schematic view of the embodiment 1 of the utility model.
[0026] Figure 2 It is a longitudinal section view of the rotating drum in the embodiment 1 of the utility model.
[0027] Figure 3 It is a structure schematic view of the embodiment 2 of the utility model. DETAILED DESCRIPTION
[0028] The embodiments of the present application will be further described in details below with specific embodiments, but the embodiments of the present application are not limited to this. If not specifically indicated, the technical means used in the following embodiments are the conventional means known to those skilled in the art; the experimental methods used are conventional methods; the materials, reagents, etc. used can be obtained from commercial channels.
[0029] The reference signs in the drawings of the specification include: a rotating drum 1, an alkali tank 2, a scraper 3, a high-temperature oil supply pipeline 4, a spray head 5, a high-temperature circulation pipeline 6, a starting end 7, a terminal end 8, a high-temperature zone 9, a high-temperature heat exchange unit 10, a high-temperature oil pump 11, a low-temperature zone 12, a low-temperature circulation pipeline 13, a low-temperature heat exchange unit 14, and a low-temperature oil pump 15.
[0030] Embodiment 1
[0031] The intelligent flake caustic soda machine with heat energy recovery function in the embodiment, as shown in Figure 1 and Figure 2 together, includes the rotating drum 1, the alkali tank 2 is arranged below the rotating drum 1, the scraper 3 is arranged on the left side of the rotating drum 1, and the oil storage tank is arranged outside the rotating drum 1, the oil storage tank is used for storing heat-conducting oil, and the heat-conducting oil is used for cooling and cooling the rotating drum 1; the oil supply pipeline is installed in the rotating drum 1, one end of the oil supply pipeline penetrates through the rotating drum 1 and is connected with the oil storage tank, and the end of the oil supply pipeline located in the rotating drum 1 is connected with the spray head 5; the rotating drum 1 is also connected with the heat-conducting oil circulation pipeline, the starting end 7 of the heat-conducting oil circulation pipeline is connected with the rotating drum 1, and the terminal end 8 is connected with the oil supply pipeline; and the heat-conducting oil circulation pipeline is provided with the heat exchange unit.
[0032] The oil supply pipeline in the embodiment includes a high-temperature oil supply pipeline 4, the heat-conducting oil circulation pipeline includes a high-temperature circulation pipeline 6, and a high-temperature zone 9 is arranged on the rotating drum 1, the rotating drum 1 in the embodiment rotates in the counterclockwise direction indicated by the arrow during work, Figure 1 the high-temperature zone 9 is located on the side of the rotating drum 1 away from the scraper 3, the high-temperature oil supply pipeline 4 is arranged in the region corresponding to the high-temperature zone 9, the starting end 7 of the high-temperature circulation pipeline 6 is connected with the rotating drum 1, the terminal end 8 is connected with the high-temperature oil supply pipeline 4, and is used for circulating the heat-conducting oil in the high-temperature zone 9, and the heat exchange unit includes a high-temperature heat exchange unit 10, the high-temperature heat exchange unit 10 is arranged on the high-temperature circulation pipeline 6, the high-temperature heat exchange unit 10 in the embodiment is a steam boiler, and in actual application, it can also be other heat exchange equipment, and the heat-conducting oil introduced into the steam boiler from the high-temperature circulation pipeline 6 is used for heating the steam boiler and making it generate steam.
[0033] The high-temperature oil pump 11 is also arranged on the high-temperature circulation pipeline 6, and the high-temperature oil pump 11 is located between the rotating drum 1 and the high-temperature heat exchange unit 10.
[0034] In the specific implementation of the embodiment, the rotating drum 1 of the flake caustic soda machine works and rotates in the counterclockwise direction indicated by the arrow, Figure 1The rotating direction is counterclockwise, so that the molten alkali in the alkali tank 2 is wrapped and covered on the surface of the rotating drum 1. Then the rotating drum 1 rotates counterclockwise. During the rotation of the rotating drum 1, the high-temperature oil supply pipeline 4 and the high-temperature circulation pipeline 6 are fixed, that is, the rotating drum 1 can rotate relative to the high-temperature oil supply pipeline 4 and the high-temperature circulation pipeline 6, and the high-temperature oil supply pipeline 4 and the high-temperature circulation pipeline 6 do not rotate with the rotating drum 1. In order to avoid the high-temperature oil supply pipeline 4 and the high-temperature circulation pipeline 6 hindering the rotation of the rotating drum 1, in actual application, the high-temperature oil supply pipeline 4 and the high-temperature circulation pipeline 6 can be designed to pass through or exit the rotating drum 1 through the rotation center of the rotating drum 1, which is within the design or selection ability of those skilled in the art, and will not be described here. Figure 2 As shown, the high-temperature oil supply pipeline 4 and the high-temperature circulation pipeline 6 pass through or exit the rotating drum 1 through the rotation center of the rotating drum 1, which is within the design or selection ability of those skilled in the art, and will not be described here.
[0035] In the initial stage of the rotation of the rotating drum 1, the part of the rotating drum 1 rotating into the high-temperature zone 9 and the molten alkali are relatively high in temperature. At this time, the heat-conducting oil in the oil storage tank enters the rotating drum 1 corresponding to the high-temperature zone 9 through the high-temperature oil supply pipeline 4. The nozzle 5 sprays the heat-conducting oil onto the inner wall of the rotating drum 1, so as to cool and cool the rotating drum 1 and the molten alkali on the outer surface of the rotating drum 1. The heat-conducting oil can absorb the heat released by the rotating drum 1 and the molten alkali. The heat-conducting oil flowing into the rotating drum 1 is pumped into the high-temperature circulation pipeline 6 by the high-temperature oil pump 11, and flows along the high-temperature circulation pipeline 6 to the high-temperature heat exchange unit 10. The high-temperature heat exchange unit 10 in the embodiment is a steam boiler. The heat-conducting oil enters the steam boiler to heat and generate steam. The generated steam can be used for the production system or the work and life of the factory. The heat of the heat-conducting oil is fully utilized in the steam boiler, so that the heat-conducting oil can be cooled. Then the heat-conducting oil flows out of the steam boiler and flows back to the high-temperature oil supply pipeline 4 along the high-temperature circulation pipeline 6, so as to be used for cooling the rotating drum 1 and the molten alkali again.
[0036] Embodiment 2
[0037] Based on the embodiment 1, as shown in the figure, Figure 3As shown, the oil supply pipeline further comprises a low-temperature oil supply pipeline, which has the same structure as the high-temperature oil supply pipeline 4. The heat-conducting oil circulation pipeline further comprises a low-temperature circulation pipeline 13. A low-temperature zone 12 is further arranged on the rotating drum 1. In this embodiment, the low-temperature zone 12 is arranged on the side of the rotating drum 1 close to the scraper 3. After the rotating drum 1 entrains the molten alkali from the alkali tank 2, it rotates counterclockwise, so that the molten alkali first passes through the high-temperature zone 9, then passes through the low-temperature zone 12, and finally reaches the scraper 3. The low-temperature oil supply pipeline is arranged in the area corresponding to the low-temperature zone 12. The starting end of the low-temperature circulation pipeline 13 is connected to the rotating drum 1, and the terminal end is connected to the low-temperature oil supply pipeline and is used to circulate the heat-conducting oil in the low-temperature zone 12. The heat exchange unit further comprises a low-temperature heat exchange unit 14, which is arranged on the low-temperature circulation pipeline 13. In this embodiment, the low-temperature heat exchange unit 14 is a circulating water cooler. The heat-conducting oil introduced into the circulating water cooler by the low-temperature circulation pipeline 13 is used for heat exchange with the circulating water in the circulating water cooler.
[0038] A low-temperature oil pump 15 is further arranged on the low-temperature circulation pipeline 13, between the rotating drum 1 and the low-temperature heat exchange unit 14.
[0039] The implementation process of this embodiment is basically the same as that of Embodiment 1. As the rotating drum 1 continuously rotates, the molten alkali on the outer surface of the rotating drum 1 gradually cools and solidifies, and the temperature continuously decreases. When the molten alkali enters the low-temperature zone 12 from the high-temperature zone 9, the temperature of the molten alkali is lower than that in the high-temperature zone 9. The heat-conducting oil in the oil tank enters the rotating drum 1 corresponding to the low-temperature zone 12 through the low-temperature oil supply pipeline. The heat-conducting oil is sprayed to the inner surface of the rotating drum 1 through the spray head 5, thereby cooling and cooling the rotating drum 1 and the molten alkali on the surface of the rotating drum 1. After absorbing the heat released by the flake alkali machine, the heat-conducting oil is sent into the low-temperature circulation pipeline 13 by the low-temperature oil pump 15, and flows to the low-temperature heat exchange unit 14 along the low-temperature circulation pipeline 13. In this embodiment, the low-temperature heat exchange unit 14 is a circulating water cooler. The heat-conducting oil enters the circulating water cooler to exchange heat with the circulating water, so that the circulating water is heated for use in the alkali production system. After heat exchange, the heat-conducting oil is cooled and flows back to the low-temperature oil supply pipeline through the low-temperature circulation pipeline 13, for use in cooling the flake alkali machine.
[0040] It should be noted that the high-temperature zone 9 and the low-temperature zone 12 in the above embodiments are not a fixed part or area on the rotating drum 1, but a position or area corresponding to the relative change of the temperature of the molten alkali during rotation. Figure 1 or Figure 3 As shown, when the rotating drum 1 rotates, the temperature of the molten alkali in the early stage is relatively high, and the corresponding area is the high-temperature zone 9. In the later stage, the temperature is relatively low, and the corresponding area is the low-temperature zone 12. Finally, the molten alkali reaches the scraper 3.
[0041] The above only is the embodiment of the present application, and the well-known specific technical solutions and / or common knowledge in the scheme are not described in detail. It should be pointed out that, for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.
Claims
1. A smart flaker caustic machine with heat energy recovery function, comprising a rotating drum, characterized in that: The drum is externally provided with an oil storage tank, the oil storage tank is used for storing heat conducting oil, the heat conducting oil is used for cooling and temperature reduction of the drum, an oil supply pipeline is installed in the drum, one end of the oil supply pipeline penetrates through the drum and is connected with the oil storage tank, the other end of the oil supply pipeline is located in the drum and is connected with a spray head, the drum is further connected with a heat conducting oil circulation pipeline, a starting end of the heat conducting oil circulation pipeline is connected with the drum, and a terminal end of the heat conducting oil circulation pipeline is connected with the oil supply pipeline, and a heat exchange unit is arranged on the heat conducting oil circulation pipeline.
2. The sheet alkali machine with heat energy recovery function according to claim 1, characterized in that: The oil supply pipeline comprises a high-temperature oil supply pipeline, the heat conducting oil circulation pipeline comprises a high-temperature circulation pipeline, a high-temperature area is arranged on the drum, the high-temperature oil supply pipeline is arranged in a region corresponding to the high-temperature area, a starting end of the high-temperature circulation pipeline is connected with the drum, a terminal end of the high-temperature circulation pipeline is connected with the high-temperature oil supply pipeline, and the high-temperature circulation pipeline is used for circulating heat conducting oil in the high-temperature area, and the heat exchange unit comprises a high-temperature heat exchange unit, and the high-temperature heat exchange unit is arranged on the high-temperature circulation pipeline. 3.The sheet-fed thermal energy recovery intelligent alkali machine according to claim 2, characterized in that: A high-temperature oil pump is further arranged on the high-temperature circulation pipeline, and the high-temperature oil pump is located between the drum and the high-temperature heat exchange unit.
4. The sheet-fed automatic washing machine with heat energy recovery function according to claim 3, characterized in that: The high-temperature heat exchange unit is a steam boiler, and heat conducting oil introduced into the steam boiler from the high-temperature circulation pipeline is used for heating the steam boiler and generating steam.
5. The intelligent sheet alkali machine with heat energy recovery function according to any one of claims 2-4, characterized in that: The oil supply pipeline further comprises a low-temperature oil supply pipeline, the heat conducting oil circulation pipeline further comprises a low-temperature circulation pipeline, a low-temperature area is further arranged on the drum, the low-temperature oil supply pipeline is arranged in a region corresponding to the low-temperature area, a starting end of the low-temperature circulation pipeline is connected with the drum, a terminal end of the low-temperature circulation pipeline is connected with the low-temperature oil supply pipeline, and the low-temperature circulation pipeline is used for circulating heat conducting oil in the low-temperature area, and the heat exchange unit further comprises a low-temperature heat exchange unit, and the low-temperature heat exchange unit is arranged on the low-temperature circulation pipeline. 6.The sheet-fed thermal energy recovery intelligent sheet alkali machine according to claim 5, characterized in that: A low-temperature oil pump is further arranged on the low-temperature circulation pipeline, and the low-temperature oil pump is located between the drum and the low-temperature heat exchange unit. 7.The sheet-fed thermal energy recovery intelligent alkali machine according to claim 6, characterized in that: The low-temperature heat exchange unit is a circulating water cooler, and heat conducting oil introduced into the circulating water cooler from the low-temperature circulation pipeline is used for heat exchange of circulating water in the circulating water cooler.