Wort two-section cooling system
By using a two-stage wort cooling system, hot water and ice water are used to cool the wort separately, solving the problem of insufficient heat energy utilization in beer production. This enables precise control of wort temperature and recovery of heat energy, reducing energy consumption and carbon emissions.
Patent Information
- Application Number
- CN202422962738.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-03
AI Technical Summary
In beer production, excessive hot water is generated when cold ice water exchanges heat with hot wort, resulting in insufficient utilization of heat energy and energy waste during the cooling process.
A two-stage wort cooling system is adopted, including first and second plate heat exchangers, which use hot water and ice water to cool the wort separately. By controlling the combination of valves and pumps, the wort temperature can be precisely controlled and heat energy can be recovered.
This improved wort cooling, saved steam energy, reduced production energy consumption, and allowed the recovered heat energy to be used in multiple stages of beer production, thus reducing carbon emissions.
Smart Images
Figure CN223547966U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cooling technology, specifically a two-stage wort cooling system. Background Technology
[0002] The method of exchanging heat between low-temperature ice water and hot wort in beer production has certain limitations. Excessive hot water is generated during the cooling process. In addition to supplying the entire production process, there is a large surplus of heat energy, resulting in insufficient utilization of heat energy. Utility Model Content
[0003] In view of the shortcomings of the existing technology, this utility model provides a two-stage wort cooling system, which solves the technical problems mentioned above.
[0004] To achieve the above objectives, this utility model provides the following technical solution: A two-stage wort cooling system includes a distillation hot water addition tank, a clarifier wort pipeline, a wort cooler, and a fermentation tank; the wort cooler includes a first plate heat exchanger and a second plate heat exchanger; the clarifier wort pipeline is connected sequentially to the first and second plate heat exchangers via a wort delivery pipe, and the output end of the wort delivery pipe is connected to the fermentation tank via a wort relay pump; the inlet end of the wort delivery pipe is equipped with a wort delivery pump and a distillation hot water addition tank, the distillation hot water addition tank being located at the front end of the wort delivery pump and connected to the wort delivery pipe via a hot water valve installed on the pipeline; a first cooling pipe is installed on the first plate heat exchanger; a second cooling pipe is installed on the second plate heat exchanger; the cooling water in the first cooling pipe is hot water, and the cooling water in the second cooling pipe is ice water.
[0005] Furthermore, the inlet end of the first cooling pipe is connected to the hot water cooling pipeline via the first cooling power pump, and the outlet end of the first cooling pipe is connected to the thermal energy storage tank.
[0006] Furthermore, the inlet end of the second cooling pipe is connected to the ice water tank via a second cooling power pump, and the outlet end of the second cooling pipe is connected to the hot water recovery tank; the hot water recovery tank is provided with an outlet connected to the hot water cooling pipeline.
[0007] Furthermore, the first cooling pipe is sequentially provided with a first cooling switch valve, a first regulating valve, a third thermometer, and a third pressure gauge along the flow direction; the first cooling switch valve and the first regulating valve are located on the first cooling pipe before heat exchange with the first plate heat exchanger, and the third thermometer and the third pressure gauge are located on the first cooling pipe after heat exchange with the first plate heat exchanger.
[0008] Furthermore, the second cooling pipe is sequentially provided with an ice water valve, a second regulating valve, a fourth thermometer, a fourth pressure gauge, and a second cooling switch valve along the flow direction; the ice water valve and the second regulating valve are located on the second cooling pipe before heat exchange with the second plate heat exchanger; the fourth thermometer, the fourth pressure gauge, and the second cooling switch valve are located on the second cooling pipe after heat exchange with the second plate heat exchanger.
[0009] Furthermore, a first thermometer is installed on the wort delivery pipe between the first plate heat exchanger and the second plate heat exchanger; a second thermometer is installed on the output end of the wort delivery pipe; based on the temperature data from the first thermometer and the second thermometer, and the pressure data from the third pressure gauge and the fourth pressure gauge, the controller controls the opening of the first regulating valve and the second regulating valve respectively to adjust the amount of cooling water entering the pipe.
[0010] Furthermore, a first flow meter and a second pressure gauge are also provided on the output end of the wort delivery pipe. The controller controls the input flow of the wort delivery pump by using the flow rate value of the first flow meter and the pressure value of the second pressure gauge.
[0011] Furthermore, the wort delivery pipe is also equipped with a clarifier wort valve and a wort valve; the clarifier wort valve is located at the outlet end of the clarifier wort pipeline; and the wort valve is located at the outlet end of the wort delivery pump. Beneficial effects
[0012] This utility model provides a two-stage wort cooling system, which has the following advantages compared with the prior art: The two-stage wort cooling system of this application has a good cooling effect and can accurately control the temperature of the cooled wort, which can enter the fermentation tank for better fermentation; at the same time, the heat energy generated during wort cooling is fully utilized, saving a lot of steam energy, and the excess heat energy is recovered and stored in the form of hot water, which can be applied to multiple stages of beer production, thereby greatly reducing energy consumption, saving overall production energy consumption, and reducing carbon emissions. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall principle and structure of this utility model.
[0014] In the diagram: 1. Clarifying tank wort valve; 2. Hot water valve; 3. Wort transfer pump; 4. Wort valve; 5. First thermometer; 6. First flow meter; 7. Second thermometer; 8. Second pressure gauge; 9. Wort relay pump; 10. Third thermometer; 11. Third pressure gauge; 12. First regulating valve; 13. First cooling switch valve; 14. First cooling power pump; 15. Fourth thermometer; 16. Fourth pressure gauge; 17. Second cooling switch valve; 18. Second regulating valve; 19. Ice water valve; 20. Second cooling power pump; 21. Wort delivery pipe; 22. First plate heat exchanger; 23. First cooling pipe; 24. Second cooling pipe; 25. Second plate heat exchanger; 100. Distilled hot water addition tank; 200. Clarifying tank wort pipeline; 300. Fermentation tank; 400. Thermal energy storage tank; 500. Hot water cooling pipeline; 600. Hot water recovery tank; 700. Detailed Implementation
[0015] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present disclosure are shown in the accompanying drawings.
[0016] like Figure 1 As shown, a two-stage wort cooling system includes a distillation hot water addition tank 100, a clarifier wort pipeline 200, a wort cooler, and a fermentation tank 300; the wort cooler includes a first plate heat exchanger 22 and a second plate heat exchanger 25; the clarifier wort pipeline 200 is connected sequentially to the first plate heat exchanger 22 and the second plate heat exchanger 25 via a wort delivery pipe 21, and the output end of the wort delivery pipe 21 is connected to the fermentation tank 300 via a wort relay pump 9; the wort delivery pipe 21... The feed end is equipped with a wort delivery pump 3 and a distilled hot water addition tank 100. The distilled hot water addition tank 100 is located in front of the wort delivery pump 3 and is connected to the wort delivery pipe 21 via a hot water valve 2 on the pipeline. A first cooling pipe 23 is provided on the first plate heat exchanger 22; a second cooling pipe 24 is provided on the second plate heat exchanger 25. The cooling water in the first cooling pipe 23 is hot water, and the cooling water in the second cooling pipe 24 is ice water. Through the first plate heat exchanger 22, the second plate heat exchanger 25, the wort delivery pipe 21, the first cooling pipe 23, and the second cooling pipe 24, the wort from the clarifying tank reaches the temperature required by the fermentation tank 300 after passing through the cooling system. Water resources and heat energy are also reasonably recovered and utilized, saving overall production energy consumption, reducing carbon emissions, and conforming to the concept of green environmental protection.
[0017] In a preferred embodiment, the water inlet of the first cooling pipe 23 is connected to the hot water cooling pipe 500 via the first cooling power pump 14, and the water outlet of the first cooling pipe 23 is connected to the thermal energy storage tank 400.
[0018] In a preferred embodiment, the inlet end of the second cooling pipe 24 is connected to the ice water tank 700 via the second cooling power pump 20, and the outlet end of the second cooling pipe 24 is connected to the hot water recovery tank 600. The hot water recovery tank 600 is provided with an outlet connected to the hot water cooling pipe 500, which can recover and reuse the hot water in the hot water recovery tank 600, thereby reducing heat loss and saving power resources.
[0019] In a preferred embodiment, the first cooling pipe 23 is provided with a first cooling switch valve 13, a first regulating valve 12, a third thermometer 10 and a third pressure gauge 11 in sequence along the flow direction; the first cooling switch valve 13 and the first regulating valve 12 are located on the first cooling pipe 23 before heat exchange with the first plate heat exchanger 22, and the third thermometer 10 and the third pressure gauge 11 are located on the first cooling pipe 23 after heat exchange with the first plate heat exchanger 22.
[0020] In a preferred embodiment, the second cooling pipe 24 is sequentially provided with an ice water valve 19, a second regulating valve 18, a fourth thermometer 15, a fourth pressure gauge 16, and a second cooling switch valve 17 along the flow direction; the ice water valve 19 and the second regulating valve 18 are located on the second cooling pipe 24 before heat exchange with the second plate heat exchanger 25; the fourth thermometer 15, the fourth pressure gauge 16, and the second cooling switch valve 17 are located on the second cooling pipe 24 after heat exchange with the second plate heat exchanger 25.
[0021] In a preferred embodiment, a first thermometer 5 is provided on the wort delivery pipe 21 between the first plate heat exchanger 22 and the second plate heat exchanger 25; a second thermometer 7 is provided on the output end of the wort delivery pipe 21; based on the temperature data of the first thermometer 5 and the second thermometer 7, and the pressure data of the third pressure gauge 11 and the fourth pressure gauge 16, the controller controls the opening degree of the first regulating valve 12 and the second regulating valve 18 respectively to adjust the amount of cooling water entering.
[0022] In a preferred embodiment, a first flow meter 6 and a second pressure gauge 8 are also provided on the output end of the wort delivery pipe 21. The controller controls the input flow of the wort delivery pump 3 by using the flow rate value of the first flow meter 6 and the pressure value of the second pressure gauge 8.
[0023] In a preferred embodiment, the wort delivery pipe 21 is further provided with a clarifier wort valve 1 and a wort valve 4; the clarifier wort valve 1 is located at the outlet end of the clarifier wort pipe 200; and the wort valve 4 is located at the outlet end of the wort delivery pump 3.
[0024] The specific operating process is as follows: Pre-cooling is performed on the first plate heat exchanger 22, the second plate heat exchanger 25, and the wort delivery pipe 21. Then, the hot water valve 2, wort valve 4, second cooling switch valve 17, second regulating valve 18, and ice water valve 19 are opened. The second cooling power pump 20 is started, and after a 3-second delay, the wort delivery pump 3 is started. When the wort-side temperature (as indicated by the second thermometer 7) drops to 8°C, the wort delivery pump 3 and the second cooling power pump 20 are stopped, and the hot water valve 2 is closed. The clarifier wort valve 1, wort valve 4, second cooling switch valve 17, second regulating valve 18, and ice water valve 19 are opened. The second cooling power pump 20 is started, and after a 3-second delay, the wort delivery pump 3 is started, initiating wort cooling. When the wort-side pressure (as indicated by the second pressure gauge 8) reaches 2 bar, the wort relay pump 9 is activated. The first regulating valve 12 and the first cooling switch valve 13 are opened, and the first cooling power pump 14 is started, initiating cooling of the wort delivery pipe 21. Simultaneously, the heat energy from the heat exchange is recovered. The wort delivery pump 3 is controlled by constant flow via the first flow meter 6, and the wort relay pump 9 is controlled by constant pressure via the second pressure gauge 8, generally at 2 bar, to prevent vacuum from occurring in the plate heat exchanger during the cooling process and damaging the wort cooler. The first thermometer 5, the second thermometer 7, the third pressure gauge 11, and the fourth pressure gauge 16, under the control of the controller, control the opening of the first regulating valve 12 and the second regulating valve 18 respectively, to regulate the inflow of cooling water, thereby maintaining the wort temperature at 88℃ after passing through the first plate heat exchanger 22; ensuring that the subsequent fourth thermometer 15 is at ≥80℃, without disrupting the original system's water and heat balance, and achieving the goal of ensuring that the wort from the clarifying tank reaches the temperature required by the fermentation tank 300 after passing through the cooling system, while also achieving reasonable recovery and utilization of water resources and heat energy. After calculation, based on a wort volume of 75 m³ per batch, a wort cooling flow rate of 110 m³ / h, and a total cooling time of 0.68 hours; the wort inlet temperature is 99℃, the wort side temperature is 88℃, and the specific heat capacity of the wort is 3.96 kJ / (kg·℃); the heat that a single batch of wort can provide through the heat exchanger is Q = 110 × 1000 × 3.96 × (99 - 88) × 0.68 = 3258288 kJ. All of this heat is transferred to the heat exchanger through the wort cooler, resulting in a steam saving of m = Q1 / 2100 = 1551.6 kg per batch (2100 kJ / kg is the sensible heat of steam). Based on an annual production of 300 batches of saccharification, the total steam saving is 300 × 1551.6 kg = 465469.7 kg. With a steam price of 0.3 yuan / kg, the annual savings would be 465469.7 kg × 0.3 yuan / kg = 139640.9 yuan.
[0025] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.
Claims
1. A two-stage wort cooling system, comprising a distillation hot water addition tank, wort piping for a clarifier, a wort cooler, and a fermentation tank; characterized in that, The wort cooler includes a first plate heat exchanger and a second plate heat exchanger; the wort pipeline of the clarifying tank is connected to the first and second plate heat exchangers in sequence through a wort delivery pipe, and the output end of the wort delivery pipe is connected to the fermentation tank through a wort relay pump; the feed end of the wort delivery pipe is equipped with a wort delivery pump and a distilled hot water addition tank, the distilled hot water addition tank is located at the front end of the wort delivery pump, and the distilled hot water addition tank is connected to the wort delivery pipe through a hot water valve installed on the pipeline; a first cooling pipe is provided on the first plate heat exchanger; a second cooling pipe is provided on the second plate heat exchanger; the cooling water in the first cooling pipe is hot water, and the cooling water in the second cooling pipe is ice water.
2. The two-stage wort cooling system according to claim 1, characterized in that, The inlet end of the first cooling pipe is connected to the hot water cooling pipeline via the first cooling power pump, and the outlet end of the first cooling pipe is connected to the thermal energy storage tank.
3. The two-stage wort cooling system according to claim 1, characterized in that, The inlet end of the second cooling pipe is connected to the ice water tank via the second cooling power pump, and the outlet end of the second cooling pipe is connected to the hot water recovery tank; the hot water recovery tank is provided with an outlet connected to the hot water cooling pipeline.
4. The two-stage wort cooling system according to claim 1, characterized in that, The first cooling pipe is provided with a first cooling switch valve, a first regulating valve, a third thermometer, and a third pressure gauge in sequence along the flow direction; the first cooling switch valve and the first regulating valve are located on the first cooling pipe before heat exchange with the first plate heat exchanger, and the third thermometer and the third pressure gauge are located on the first cooling pipe after heat exchange with the first plate heat exchanger.
5. The two-stage wort cooling system according to claim 4, characterized in that, The second cooling pipe is provided with an ice water valve, a second regulating valve, a fourth thermometer, a fourth pressure gauge, and a second cooling switch valve in sequence along the flow direction; the ice water valve and the second regulating valve are located on the second cooling pipe before heat exchange with the second plate heat exchanger; the fourth thermometer, the fourth pressure gauge, and the second cooling switch valve are located on the second cooling pipe after heat exchange with the second plate heat exchanger.
6. The two-stage wort cooling system according to claim 5, characterized in that, A first thermometer is installed on the wort delivery pipe between the first plate heat exchanger and the second plate heat exchanger; a second thermometer is installed on the output end of the wort delivery pipe; based on the temperature data from the first thermometer and the second thermometer, and the pressure data from the third pressure gauge and the fourth pressure gauge, the controller controls the opening of the first regulating valve and the second regulating valve respectively to adjust the amount of cooling water entering the pipe.
7. The two-stage wort cooling system according to claim 1, characterized in that, The wort delivery pipe is also equipped with a first flow meter and a second pressure gauge at its output end. The controller controls the input flow rate of the wort delivery pump by using the flow rate value of the first flow meter and the pressure value of the second pressure gauge.
8. The two-stage wort cooling system according to claim 1, characterized in that, The wort delivery pipe is also equipped with a clarifier wort valve and a wort valve; the clarifier wort valve is located at the outlet end of the clarifier wort pipeline; the wort valve is located at the outlet end of the wort delivery pump.