UHT novel energy-saving process device
By introducing a return water reuse pipeline and control valves into the UHT heat exchange system, and using the return medium of the tower water cooling heat exchanger to preheat the product, the problem of high energy consumption in the UHT heat exchange system is solved, and the energy-saving effect of rapid product heating and cooling is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN XINKANG WATER TREATMENT CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-17
AI Technical Summary
Existing UHT heat exchange systems have high energy consumption, mainly because the first few heat exchangers require high product heat exchange temperatures, resulting in high heat source energy consumption.
In the UHT heat exchange system, a return water reuse pipeline is introduced to transport the return heat exchange medium from the tower water cooling heat exchanger back to the first heat exchanger. The residual temperature is used to preheat the product to be processed, and the flow rate is adjusted by controlling the valve. Combined with the steam heat source and plate heat exchanger, the medium flow is optimized to achieve rapid heating and cooling of the product.
This reduces the heat source energy consumption of the heating heat exchanger, improves the preheating efficiency of the product, reduces the energy consumption of the cooling medium, and achieves the energy-saving effect of the UHT heat exchange system.
Smart Images
Figure CN224125158U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ultra-high temperature instantaneous processing, and in particular to a novel UHT energy-saving process device. Background Technology
[0002] Ultra-High Temperature (UHT) processing is a technology used in food and beverage processing, particularly for the sterilization of liquid foods such as milk. This technology heats products to very high temperatures (typically 130 to 140 degrees Celsius) in an extremely short time and then rapidly cools them to kill harmful microorganisms while minimizing the impact on food quality and nutritional value.
[0003] In existing UHT heat exchange systems, multiple heat exchangers are set up to heat up and cool down the product to be processed. Usually, in order to heat up the product to the predetermined temperature more quickly, the first few heat exchangers in the UHT heat exchange system need to have a high product heat exchange temperature. This requires the corresponding heat source to consume a lot of energy to continuously provide the heat exchange medium at the corresponding temperature, resulting in high energy consumption of the UHT heat exchange system. Summary of the Invention
[0004] In view of this, the present invention provides a novel UHT energy-saving process device, which at least partially solves the problems existing in the prior art.
[0005] According to one aspect of this utility model, a novel UHT energy-saving process device is provided, comprising:
[0006] The UHT heat exchange system consists of a primary heat exchanger and a return water reuse pipeline. The UHT heat exchange system includes a tower water cooling heat exchanger. The heat exchange product outlet of the primary heat exchanger is connected to the heat exchange product inlet of the UHT heat exchange system.
[0007] The water reuse pipeline includes an inlet pipeline, an outlet pipeline, an inlet control valve, an outlet control valve, and a return water control valve.
[0008] The inlet water pipe is connected to the heat exchange medium inlet of the first heat exchanger and the heat exchange medium return water pipe of the tower water cooling heat exchanger. The inlet water control valve is installed on the inlet water pipe.
[0009] The outlet water pipe is connected to the heat exchange medium outlet of the first heat exchanger and the heat exchange medium return water pipe of the tower water cooling heat exchanger. The outlet water control valve is installed on the outlet water pipe. The connection between the outlet water pipe and the heat exchange medium return water pipe of the tower water cooling heat exchanger is located downstream of the connection between the inlet water pipe and the heat exchange medium return water pipe of the tower water cooling heat exchanger.
[0010] The return water control valve is installed in the target section of the heat exchange medium return water pipeline of the tower water cooling heat exchanger. The target section is the return water pipeline section between the connection point of the outlet pipeline and the heat exchange medium return water pipeline of the tower water cooling heat exchanger and the connection point of the inlet pipeline and the heat exchange medium return water pipeline of the tower water cooling heat exchanger.
[0011] Furthermore, the UHT heat exchange system also includes:
[0012] Preheating heat exchangers, sterilization heat exchangers, precooling heat exchangers, and chilled water cooling heat exchangers.
[0013] The preheating heat exchanger, sterilization heat exchanger, precooling heat exchanger, tower water cooling heat exchanger, and ice water cooling heat exchanger are connected in series to form a heat exchange path for the product to be processed.
[0014] The product heat exchange temperature corresponding to the preheating heat exchanger is lower than that corresponding to the sterilization heat exchanger. The product heat exchange temperatures corresponding to the sterilization heat exchanger, precooling heat exchanger, tower water cooling heat exchanger, and chilled water cooling heat exchanger decrease sequentially. The heat source is used to provide the heat exchange medium for the corresponding heat exchanger.
[0015] Furthermore, it also includes a steam heat source, a first heat exchange pipeline, and a plate heat exchanger.
[0016] The steam heat source is connected to the gas phase inlet of the plate heat exchanger.
[0017] The inlet of the first heat exchange pipeline is connected to the liquid phase outlet of the plate heat exchanger, and the outlet of the first heat exchange pipeline is connected to the liquid phase inlet of the plate heat exchanger. The first heat exchange pipeline connects the heat exchange sections of the sterilization heat exchanger, the preheating heat exchanger and the precooling heat exchanger in series, and is used to sequentially input the heat exchange medium into the sterilization heat exchanger, the preheating heat exchanger and the precooling heat exchanger.
[0018] Furthermore, it also includes: a second heat exchanger and a second heat exchange pipeline.
[0019] The inlet of the second heat exchanger is connected to the outlet of the second heat exchange pipeline, and the outlet of the second heat exchanger is connected to the inlet of the second heat exchange pipeline. The second heat exchange pipeline is used to input the heat exchange medium into the second heat exchanger.
[0020] The heat exchanger inlet of the second heat exchanger is connected to the heat exchanger outlet of the first heat exchanger. The heat exchanger outlet of the second heat exchanger is connected to the heat exchanger inlet of the UHT heat exchange system.
[0021] Furthermore, both the first and second heat exchangers are tubular heat exchangers.
[0022] Furthermore, it also includes a third heat exchange pipeline.
[0023] The third heat exchange pipeline is the heat exchange medium supply pipeline for the chilled water cooling heat exchanger.
[0024] Furthermore, the inlet control valve, outlet control valve, and return control valve are all butterfly valves.
[0025] Furthermore, the heat exchange temperature of the product corresponding to the tower water cooling heat exchanger is [45℃, 55℃].
[0026] Furthermore, the heat exchange temperature of the product corresponding to the sterilization heat exchanger is [125℃, 140℃].
[0027] Furthermore, the heat exchange temperatures of the preheating heat exchanger and the precooling heat exchanger are both [80℃, 90℃].
[0028] The technical solution of this utility model has at least the following beneficial effects:
[0029] In this invention, by connecting a return water reuse pipeline to the return water pipeline of the tower water cooling heat exchanger in the UHT heat exchange system, the heat exchange medium returning from the tower water cooling heat exchanger can be transported back to the first heat exchanger for use. Simultaneously, since the first heat exchanger is connected to the heat exchange product inlet of the UHT heat exchange system, and the temperature of the heat exchange medium returning from the tower water cooling heat exchanger (typically around 50°C) is higher than the initial temperature of the product to be treated, the residual temperature of the heat exchange medium returning to the first heat exchanger can be used to preheat the initial product to be treated, increasing its initial temperature upon entering the UHT heat exchange system. This allows the heating heat exchanger to use a lower heat source temperature, achieving a rapid heating effect on the initial product to be treated, ultimately reducing the energy consumption of the corresponding heat source in the heating heat exchanger.
[0030] In addition, the heat exchange medium after passing through the first heat exchanger returns to the heat exchange medium return water pipeline of the tower water cooling heat exchanger. At this time, the temperature of the heat exchange medium is lower than the initial temperature of the heat exchange medium in the heat exchange medium return water pipeline. Therefore, it is closer to the temperature of the corresponding heat source of the tower water cooling heat exchanger (usually 10℃-20℃). This can also reduce the energy consumed when cooling the temperature of the heat exchange medium in the heat exchange medium return water pipeline to the corresponding heat source temperature, further achieving the energy-saving effect. Attached Figure Description
[0031] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1This is a schematic diagram of the structure of the novel UHT energy-saving process device in one embodiment of this application when there is no second heat exchanger.
[0033] Figure 2 This is a schematic diagram of the structure of the UHT novel energy-saving process device in another embodiment of this application, when a second heat exchanger is included.
[0034] Figure Labels
[0035] 1. First heat exchanger; 10. Inlet water pipe; 101. Inlet water control valve; 11. Outlet water pipe; 111. Outlet water control valve; 2. UHT heat exchange system; 21. Preheating heat exchanger; 22. Sterilization heat exchanger; 220. First heat exchange pipe; 23. Precooling heat exchanger; 24. Tower water cooling heat exchanger; 240. Heat exchange medium return water pipe; 241. Return water control valve; 25. Chilled water cooling heat exchanger; 250. Third heat exchange pipe; 3. Second heat exchanger; 30. Second heat exchange pipe; 4. Steam heat source; 5. Plate heat exchanger. Detailed Implementation
[0036] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0037] It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. Furthermore, all other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.
[0038] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this disclosure, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.
[0039] As one embodiment of this utility model, such as Figure 1 As shown, a novel UHT energy-saving process device is provided, comprising:
[0040] UHT heat exchange system 2, first heat exchanger 1, and return water reuse pipeline. UHT heat exchange system 2 includes tower water cooling heat exchanger 24. The heat exchange product outlet of first heat exchanger 1 is connected to the heat exchange product inlet of UHT heat exchange system 2.
[0041] The water return and reuse pipeline includes an inlet pipeline 10, an outlet pipeline 11, an inlet control valve 101, an outlet control valve 111, and a return water control valve 241. Specifically, the inlet control valve 101, the outlet control valve 111, and the return water control valve 241 can all be butterfly valves.
[0042] The inlet water pipe 10 is connected to the heat exchange medium inlet of the first heat exchanger 1 and the heat exchange medium return water pipe 240 of the tower water cooling heat exchanger 24. The inlet water control valve 101 is installed on the inlet water pipe 10.
[0043] The outlet water pipe 11 is connected to the heat exchange medium outlet of the first heat exchanger 1 and the heat exchange medium return water pipe 240 of the tower water cooling heat exchanger 24. The outlet water control valve 111 is installed on the outlet water pipe 11. The connection between the outlet water pipe 11 and the heat exchange medium return water pipe 240 of the tower water cooling heat exchanger 24 is located downstream of the connection between the inlet water pipe 10 and the heat exchange medium return water pipe 240 of the tower water cooling heat exchanger 24.
[0044] In this configuration, the heat exchange medium flowing through the first heat exchanger 1 returns to the heat exchange medium return water pipeline 240 of the tower water cooling heat exchanger 24, thus allowing it to be smoothly connected with other existing structures without the need to adjust or modify the pipelines for subsequent processes.
[0045] The return water control valve 241 is installed in the target section of the heat exchange medium return water pipeline 240 of the tower water cooling heat exchanger 24. The target section is the return water pipeline section between the connection point of the outlet pipeline 11 and the heat exchange medium return water pipeline 240 of the tower water cooling heat exchanger 24, and the connection point of the inlet pipeline 10 and the heat exchange medium return water pipeline 240 of the tower water cooling heat exchanger 24.
[0046] In this embodiment, by adjusting the opening of the inlet control valve 101, outlet control valve 111, and return control valve 241, the flow rate of the heat exchange medium in the tower water cooling heat exchanger 24 and the flow rate of the heat exchange medium in the first heat exchanger 1 can be controlled. This allows for more precise control of the preheating and cooling effects on the product to be processed, and avoids mutual interference between the first heat exchanger 1 and the tower water cooling heat exchanger 24.
[0047] Specifically, the UHT heat exchange system 2 also includes: a preheating heat exchanger 21, a sterilization heat exchanger 22, a precooling heat exchanger 23, and an ice water cooling heat exchanger 25.
[0048] The preheating heat exchanger 21, the sterilization heat exchanger 22, the precooling heat exchanger 23, the tower water cooling heat exchanger 24, and the ice water cooling heat exchanger 25 are connected in series to form a heat exchange path for the product to be processed.
[0049] The product heat exchange temperature corresponding to the preheating heat exchanger 21 is lower than the product heat exchange temperature corresponding to the sterilization heat exchanger 22. The product heat exchange temperatures corresponding to the sterilization heat exchanger 22, precooling heat exchanger 23, tower water cooling heat exchanger 24, and ice water cooling heat exchanger 25 decrease sequentially. The heat source is used to provide the heat exchange medium for the corresponding heat exchanger.
[0050] Specifically, in this embodiment, the product heat exchange temperature corresponding to the tower water cooling heat exchanger 24 can be [45℃, 55℃]. The product heat exchange temperature corresponding to the sterilization heat exchanger 22 can be [125℃, 140℃]. The product heat exchange temperatures corresponding to the preheating heat exchanger 21 and the precooling heat exchanger 23 can both be [80℃, 90℃]. The product heat exchange temperature mentioned in this embodiment specifically refers to the temperature of the product to be processed after heat exchange treatment in the heat exchanger. Usually, this temperature is approximately the same as the return water temperature of the heat exchange medium in the corresponding heat exchanger.
[0051] To better provide the heat exchange medium at the corresponding temperature to each heat exchanger in the UHT heat exchange system 2, this embodiment also includes a steam heat source 4, a first heat exchange pipeline 220, and a plate heat exchanger 5.
[0052] Steam heat source 4 is connected to the gas phase inlet of plate heat exchanger 5. The inlet of the first heat exchange pipeline 220 is connected to the liquid phase outlet of plate heat exchanger 5, and the outlet of the first heat exchange pipeline 220 is connected to the liquid phase inlet of plate heat exchanger 5. The first heat exchange pipeline 220 connects the heat exchange sections of sterilization heat exchanger 22, preheating heat exchanger 21 and precooling heat exchanger 23 in series, and is used to sequentially input the heat exchange medium into sterilization heat exchanger 22, preheating heat exchanger 21 and precooling heat exchanger 23.
[0053] The corresponding steam heat source 4 provides high-temperature steam, with a temperature of approximately 165°C. Then, through a plate heat exchanger 5, the high-temperature steam exchanges heat with the liquid heat exchange medium, raising the temperature of the heat exchange medium, for example, to 140°C. Then, through the first heat exchange pipe 220, the heat exchange medium is sequentially fed into the sterilization heat exchanger 22, the preheating heat exchanger 21, and the precooling heat exchanger 23. According to the flow sequence, the temperature of the heat exchange medium decreases sequentially in the sterilization heat exchanger 22, the preheating heat exchanger 21, and the precooling heat exchanger 23.
[0054] However, in the UHT heat exchange system 2, the product to be processed flows through the corresponding heat exchangers in the order of preheating heat exchanger 21, sterilization heat exchanger 22, and precooling heat exchanger 23 for heat exchange. Therefore, by adjusting the flow order of the heat exchange medium and the flow order of the product to be processed, the same heat exchange medium can be used to achieve the effects of preheating (preheating heat exchanger 21), high-temperature sterilization (sterilization heat exchanger 22), and cooling (precooling heat exchanger 23) for the three heat exchangers respectively. This eliminates the need to set up separate heat sources to provide heat exchange media at corresponding temperatures, thus achieving energy savings.
[0055] In this embodiment, the heat exchange medium of each heat exchanger can be selected from existing heat exchange media as needed, such as water, ice water, or a solution mixed with antifreeze such as ethylene glycol.
[0056] In addition, it also includes a third heat exchange pipeline 250, which is a heat exchange medium supply pipeline for the chilled water cooling heat exchanger 25.
[0057] In this invention, by connecting a return water reuse pipeline to the return water pipeline 240 of the tower water cooling heat exchanger 24 in the UHT heat exchange system 2, the heat exchange medium returning from the tower water cooling heat exchanger 24 can be transported back to the first heat exchanger 1 for use. Simultaneously, since the first heat exchanger 1 is connected to the heat exchange product inlet of the UHT heat exchange system 2, and the temperature of the heat exchange medium returning from the tower water cooling heat exchanger 24 (typically around 50°C) is higher than the initial temperature of the product to be treated, the residual temperature of the heat exchange medium returning to the first heat exchanger 1 can be used to preheat the initial product to be treated, increasing its initial temperature upon entering the UHT heat exchange system 2. This allows the heating heat exchanger to use a lower heat source temperature, achieving a rapid heating effect on the initial product to be treated, ultimately reducing the energy consumption of the corresponding heat source in the heating heat exchanger.
[0058] In addition, the heat exchange medium after passing through the first heat exchanger 1 returns to the heat exchange medium return water pipe 240 of the tower water cooling heat exchanger 24. At this time, the temperature of the heat exchange medium is lower than the initial temperature of the heat exchange medium in the heat exchange medium return water pipe 240. Therefore, it is closer to the temperature of the corresponding heat source of the tower water cooling heat exchanger 24 (usually 10℃-20℃). This can also reduce the energy consumed when cooling the temperature of the heat exchange medium in the heat exchange medium return water pipe 240 to the corresponding heat source temperature, further achieving the energy-saving effect.
[0059] As another possible embodiment of this utility model, such as Figure 2 As shown, it also includes: a second heat exchanger 3 and a second heat exchange pipeline 30.
[0060] The heat exchange medium inlet of the second heat exchanger 3 is connected to the outlet of the second heat exchange pipeline 30, and the heat exchange medium outlet of the second heat exchanger 3 is connected to the water inlet of the second heat exchange pipeline 30. The second heat exchange pipeline 30 is used to input the heat exchange medium into the second heat exchanger 3.
[0061] The heat exchanger product inlet of the second heat exchanger 3 is connected to the heat exchanger product outlet of the first heat exchanger 1. The heat exchanger product outlet of the second heat exchanger 3 is connected to the heat exchanger product inlet of the UHT heat exchange system 2. Specifically, both the first heat exchanger 1 and the second heat exchanger 3 are tubular heat exchangers.
[0062] In this embodiment, to further increase the preheating temperature of the product to be processed, a second heat exchanger 3 is added between the first heat exchanger 1 and the UHT heat exchange system 2. Furthermore, this second heat exchanger 3 uses independent heat exchange piping, allowing it to be connected to an independent heat source to provide a heat exchange medium at the corresponding temperature, thereby better meeting the preheating requirements of different products to be processed and improving the applicability of this invention.
[0063] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A UHT novel energy saving process plant characterized by, include: The system comprises a UHT heat exchanger system, a first heat exchanger, and a return water reuse pipeline; the UHT heat exchanger system includes a tower water cooling heat exchanger; the heat exchange product outlet of the first heat exchanger is connected to the heat exchange product inlet of the UHT heat exchanger system. The water reuse pipeline includes an inlet pipeline, an outlet pipeline, an inlet control valve, an outlet control valve, and a return water control valve; The inlet water pipeline is connected to the heat exchange medium inlet of the first heat exchanger and the heat exchange medium return water pipeline of the tower water cooling heat exchanger; the inlet water control valve is installed on the inlet water pipeline. The outlet water pipe is connected to the heat exchange medium outlet of the first heat exchanger and the heat exchange medium return water pipe of the tower water cooling heat exchanger; the outlet water control valve is installed on the outlet water pipe; the connection between the outlet water pipe and the heat exchange medium return water pipe of the tower water cooling heat exchanger is located downstream of the connection between the inlet water pipe and the heat exchange medium return water pipe of the tower water cooling heat exchanger. The return water control valve is installed in the target section of the heat exchange medium return water pipeline of the tower water cooling heat exchanger; the target section is the return water pipeline section between the connection point of the outlet pipeline and the heat exchange medium return water pipeline of the tower water cooling heat exchanger and the connection point of the inlet pipeline and the heat exchange medium return water pipeline of the tower water cooling heat exchanger.
2. A UHT novel energy saving process plant as claimed in claim 1, wherein, The UHT heat exchange system also includes: Preheating heat exchangers, sterilization heat exchangers, precooling heat exchangers, and chilled water cooling heat exchangers; The preheating heat exchanger, sterilization heat exchanger, precooling heat exchanger, tower water cooling heat exchanger and ice water cooling heat exchanger are connected in series to form a heat exchange path for the product to be processed. The product heat exchange temperature corresponding to the preheating heat exchanger is lower than that corresponding to the sterilization heat exchanger; the product heat exchange temperatures corresponding to the sterilization heat exchanger, precooling heat exchanger, tower water cooling heat exchanger, and ice water cooling heat exchanger decrease sequentially; the heat source is used to provide heat exchange medium for the corresponding heat exchanger.
3. A UHT novel energy saving process plant as claimed in claim 2, wherein, It also includes a steam heat source, a first heat exchange pipeline, and a plate heat exchanger; The steam heat source is connected to the gas phase inlet of the plate heat exchanger; The inlet of the first heat exchange pipeline is connected to the liquid phase outlet of the plate heat exchanger, and the outlet of the first heat exchange pipeline is connected to the liquid phase inlet of the plate heat exchanger. The first heat exchange pipeline connects the heat exchange sections of the sterilization heat exchanger, the preheating heat exchanger and the precooling heat exchanger in series, and is used to sequentially input the heat exchange medium into the sterilization heat exchanger, the preheating heat exchanger and the precooling heat exchanger.
4. A UHT novel energy saving process plant as claimed in claim 1, wherein, Also includes: Second heat exchanger and second heat exchange piping; The heat exchange medium inlet of the second heat exchanger is connected to the outlet of the second heat exchange pipeline, and the heat exchange medium outlet of the second heat exchanger is connected to the water inlet of the second heat exchange pipeline; the second heat exchange pipeline is used to input the heat exchange medium into the second heat exchanger. The heat exchange product inlet of the second heat exchanger is connected to the heat exchange product outlet of the first heat exchanger; the heat exchange product outlet of the second heat exchanger is connected to the heat exchange product inlet of the UHT heat exchange system.
5. A UHT novel energy saving process plant as claimed in claim 4, wherein, Both the first heat exchanger and the second heat exchanger are tubular heat exchangers.
6. A UHT novel energy saving process plant as claimed in claim 4, wherein, It also includes a third heat exchange pipeline. The third heat exchange pipeline is the heat exchange medium supply pipeline for the chilled water cooling heat exchanger.
7. A UHT novel energy saving process plant as claimed in claim 1, wherein, The inlet control valve, outlet control valve, and return control valve are all butterfly valves.
8. A UHT novel energy saving process plant as claimed in claim 2, wherein, The heat exchange temperature of the tower water cooling heat exchanger is [45℃, 55℃].
9. A UHT novel energy saving process plant as claimed in claim 2, wherein, The product heat exchange temperature corresponding to the sterilization heat exchanger is [125℃, 140℃].
10. A UHT novel energy saving process plant as claimed in claim 2, wherein, The heat exchange temperatures of the preheating heat exchanger and the precooling heat exchanger are both [80℃, 90℃].