A water system for recycling CIP cleaning water for use in cooling towers
By designing a water system for recycling water after CIP cleaning and using it in the cooling tower, the problem of residual water in the equipment that cannot be recycled and reused was solved, realizing the recycling of water resources and the effective use of energy, and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 广州南沙珠江啤酒有限公司
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-03
AI Technical Summary
In beer production, the clean hot water left over after equipment cleaning cannot be effectively recovered and used for heat exchange in cooling towers, leading to water waste and increased pressure on wastewater treatment.
Design a water system for recycling water after CIP cleaning for use in cooling towers, including a recycling module, an external supply module, and a circulation module. The residual water in the equipment is recycled to a storage tank through a pipeline and valve system, and then its temperature is reduced by heat exchange plates before being supplied to the cooling tower.
It enables the recovery and storage of clean hot water within the equipment, reducing water waste and the pressure on sewage treatment. Furthermore, it uses heat exchange plates to heat brewing water, saving energy costs.
Smart Images
Figure CN224455481U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of water recycling, specifically relating to a water system for recycling water after CIP cleaning and using it in a cooling tower. Background Technology
[0002] Currently, in beer production, after alkaline cleaning of equipment, hot water is used for rinsing and thermal sterilization. This hot water remains inside the equipment after cleaning. When the equipment is used again, materials or deoxygenated water are used to replace this residual water. During this replacement process, the residual water is directly discharged into the drain. This water is clean water with heat energy; direct discharge into the drain not only wastes a large amount of water resources but also negatively impacts wastewater treatment. Furthermore, the residual water inside the existing equipment in the workshop is not easily recovered and used for heat exchange in cooling towers.
[0003] Therefore, a new technology is needed to solve the problem of how residual water inside the equipment can be used for heat exchange in cooling towers in existing technologies. Utility Model Content
[0004] To address the aforementioned problems in the prior art, this utility model provides a water system for recycling CIP cleaning water for use in cooling towers, which facilitates the recycling, storage, and use of residual CIP cleaning water in the equipment for cooling tower cooling.
[0005] The present invention adopts the following technical solution:
[0006] A water system for using recycled CIP cleaning water in a cooling tower includes a recycling module, an external supply module, and a circulation module. Each device is equipped with a first discharge port for CIP cleaning water, and each first discharge port is equipped with a first discharge pipe. The recycling module includes a first recycling water path and a recycling water storage tank. The recycling water storage tank is equipped with a recycling water inlet and a recycling water outlet. One end of the first recycling water path is connected to each of the first discharge pipes, and the other end is connected to the recycling water inlet.
[0007] The external supply module includes an external water supply path and a heat exchange plate. The external water supply path includes a first flow path and a second flow path. One end of the first flow path is connected to the recycled water outlet, and the other end is connected to one side of the heat exchange plate. The opposite side of the heat exchange plate is connected to the brewing water supply path. The first flow path is connected to one end of the second flow path through the heat exchange plate, and the other end of the second flow path is connected to the water system of the cooling tower and used to supply water to it.
[0008] The circulation module includes a circulation water path, the recycled water storage tank is provided with a circulation inlet, one end of the circulation water path is connected to the second flow path, and the other end is connected to the circulation inlet.
[0009] As a further improvement to the technical solution of this utility model, each of the recycling modules further includes a second recycling water path, which includes a second discharge port for cleaning water and a second discharge pipe. The second discharge pipe is connected to the recycling water storage tank, and both ends of the second discharge pipe are respectively connected to the second discharge port and the CIP cleaning system.
[0010] As a further improvement to the technical solution of this utility model, the top of the recycled water storage tank is provided with an exhaust pipe that communicates with the outside.
[0011] As a further improvement to the technical solution of this utility model, the external water supply circuit includes a first pipe and a second pipe, the first pipe forming the first flow path and the second pipe forming the second flow path; a first heat exchange pipe is provided on one side of the heat exchange plate and a second heat exchange pipe is provided on the other side; both ends of the first heat exchange pipe are respectively connected to the first pipe and the second pipe, the other end of the first pipe is connected to the recycled water outlet, and the second heat exchange pipe is connected to the brewing water supply circuit; the first pipe is provided with a recycled water external supply pipe shut-off valve, a recycled water external supply pipe conductivity meter, a recycled water external supply pump, a recycled water external supply pipe check valve, and a recycled water external supply pipe flow meter in sequence at intervals along the direction close to the heat exchange plate;
[0012] The other end of the second pipe is connected to the cooling tower, and the second pipe is equipped with a water recovery supply valve.
[0013] As a further improvement to the technical solution of this utility model, a heat exchange plate inlet valve is provided at one end of the first heat exchange pipe near the first pipe, and a heat exchange plate outlet valve is provided at one end of the first heat exchange pipe near the second pipe.
[0014] As a further improvement to the technical solution of this utility model, a heat exchange plate recovery water inlet thermometer is provided at one end of the first heat exchange pipe near the first pipe, and a heat exchange plate recovery water outlet thermometer is provided at one end of the second pipe near the first heat exchange pipe.
[0015] As a further improvement to the technical solution of this utility model, it also includes a water inlet pipe. The bottom of the recycled water storage tank is provided with a recycled water inlet pipe. The upper end of the recycled water inlet pipe extends into the recycled water storage tank, and the lower end extends out of the recycled water storage tank and is connected to the circulation inlet and the recycled water inlet respectively.
[0016] The upper end of the water inlet pipe forms the circulation inlet and the recycled water inlet, and the lower end of the water inlet pipe can be connected to the first discharge pipe and the CIP cleaning system, respectively.
[0017] The first discharge pipe is connected to the inlet pipe through a recycled water inlet valve. The first discharge pipe is also equipped with a conductivity meter. The end of the first discharge pipe away from the inlet pipe is also equipped with a first recycled water valve. The first discharge outlet is also equipped with an emptying pipe.
[0018] As a further improvement to the technical solution of this utility model, it also includes a circulation pipe, one end of which is connected to the second pipe and the other end of which is connected to the lower end of the inlet pipe. The circulation pipe is provided with a recycled water circulation pipe outlet valve and a recycled water circulation pipe inlet valve at intervals. The recycled water circulation pipe outlet valve is located close to the second pipe. The connection point between one end of the circulation pipe and the second pipe is located between the recycled water outlet thermometer of the heat exchange plate and the recycled water external supply valve. The recycled water external supply valve is located close to the inlet pipe.
[0019] A circulation discharge valve is also provided between the inlet valve and the outlet valve of the recycled water circulation pipeline.
[0020] As a further improvement to the technical solution of this utility model, the first pipeline is also provided with a sampling valve for the external supply of recycled water. The sampling valve for the external supply of recycled water is located close to the recycled water storage tank and is situated between the recycled water storage tank and the shut-off valve for the external supply of recycled water.
[0021] As a further improvement to the technical solution of this utility model, the brewing water supply circuit includes a brewing water external supply pipeline of the water treatment station and a saccharification brewing water tank. One end of the second heat exchange pipeline is connected to the brewing water external supply pipeline of the water treatment station, and the other end is connected to the saccharification brewing water tank through a connecting pipeline. The brewing water external supply pipeline of the water treatment station is equipped with a brewing water inlet valve and a heat exchange plate brewing water inlet thermometer and is connected to the water supply pipeline of the brewing water tank. The connecting pipeline is equipped with a heat exchange plate brewing water outlet thermometer, a brewing water outlet check valve, and a brewing water outlet valve.
[0022] A bypass pipe is also provided, on which a brewing water bypass valve is installed. The two ends of the bypass pipe are respectively connected to the brewing water external supply pipe of the water treatment station and the connecting pipe.
[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0024] The CIP cleaning process in this solution utilizes the recycled water from the cooling tower's water system. This allows for the recovery and storage of clean hot water within the equipment and pipes. After heat exchange with the brewing water system, the water is supplied to the external system, ensuring that both the recycling and usage systems remain clean. Attached Figure Description
[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
[0026] Figure 1 This is a diagram of the overall water system of this utility model.
[0027] Figure label:
[0028] 1-First discharge port; 2-First recovered water valve; 3-Drain pipe; 4-Conductivity meter; 5-Second discharge port; 6-First recovered water inlet valve; 7-First connection port; 8-First recovered water pipeline shut-off valve; 9-Second recovered water valve; 10-Second recovered water pipeline shut-off valve; 11-Second connection port; 12-Recovered water circulation pipeline inlet valve; 13-Circulation discharge valve; 14-Third connection port; 15-Recovered water storage tank; 1501-Recovered water inlet; 1502-Recovered water outlet; 16-Exhaust pipe; 17-Recovered water inlet pipe; 18-Recovered water external supply pipeline sampling valve; 19-Recovered water external supply pipeline shut-off valve; 20-Recovered water external supply pump; 21-Recovered water external supply pipeline check valve; 22-Heat exchanger plate inlet valve; 23-Heat exchanger plate outlet valve; 24-Heat exchanger plate discharge valve; 25- 26-Conductivity meter for recycled water external supply pipeline; 27-Flow meter for recycled water external supply pipeline; 28-Recycled water inlet thermometer for heat exchanger plate; 29-Recycled water outlet thermometer for heat exchanger plate; 30-Brewing water inlet thermometer for heat exchanger plate; 31-Outlet valve for recycled water circulation pipeline; 32-Recycled water external supply valve; 33-Brewing water inlet valve; 34-Brewing water outlet check valve; 35-Brewing water outlet valve; 36-Brewing water pipeline bypass valve; 37-Brewing water external supply equipment; 38-Brewing water tank; 39-Cooling tower; 40-Heat exchange plate; 41-First discharge pipeline; 42-First pipeline; 43-Second pipeline; 44-Brewing water external supply pipeline for water treatment station; 45-Connecting pipeline; 46-Circulation pipeline; 47-Inlet pipeline; 48-Second discharge pipeline; 49-Third discharge pipeline. Detailed Implementation
[0029] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.
[0030] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.
[0031] Reference Figure 1 A water system for using recycled water from CIP cleaning in a cooling tower includes a recycling module, an external supply module, and a circulation module. Each device is equipped with a first discharge port 1 for CIP cleaning water, which is the discharge port for the cleaning water from each device undergoing CIP cleaning. Each first discharge port 1 is equipped with a first discharge pipe 41. The recycling module includes a first recycling water path 42 and a recycling water storage tank 15. The recycling water storage tank 15 is equipped with a recycling water inlet 1501 and a recycling water outlet 1502. One end of the first recycling water path is connected to each of the first discharge pipes 41, and the other end is connected to the recycling water inlet 1501.
[0032] The external supply module includes an external water supply path and a heat exchange plate 40. The external water supply path includes a first flow path and a second flow path. One end of the first flow path is connected to the recycled water outlet 1502, and the other end is connected to one side of the heat exchange plate 40. The opposite side of the heat exchange plate 40 is connected to the water supply path of the brewing process. The first flow path exchanges heat through the heat exchange plate 40 and is connected to one end of the second flow path. The other end of the second flow path is connected to the water system of the cooling tower 39 and is used to supply water to it.
[0033] The circulation module includes a circulation water path, the recycled water storage tank 15 is provided with a circulation inlet, one end of the circulation water path is connected to the second flow path, and the other end is connected to the circulation inlet.
[0034] Specifically, each of the recycling modules further includes a second recycling water path, which includes a second discharge port 5 for cleaning water and a second discharge pipe 48. The second discharge pipe 48 is connected to the recycling water storage tank 15. Both ends of the second discharge pipe 48 are connected to the second discharge port 5 and the second connection port 11 on the CIP cleaning system, respectively. The CIP cleaning system is connected to the CIP cleaning system through the second connection port 11, and the CIP cleaning system can perform subsequent processing according to the actual situation.
[0035] Specifically, the top of the recycled water storage tank 15 is equipped with an exhaust pipe 16 that communicates with the outside.
[0036] Specifically, the external water supply path includes a first pipe 42 and a second pipe 43. The first pipe 42 forms the first flow path, and the second pipe 43 forms the second flow path. A first heat exchange pipe is provided on one side of the heat exchange plate 40, and a second heat exchange pipe is provided on the other side. The water in the two heat exchange pipes can exchange heat. The heat exchange plate 40 can adopt a conventional heat exchange plate structure. The two ends of the first heat exchange pipe are connected to the first pipe 42 and the second pipe 43, respectively. The other end of the first pipe 42, away from the heat exchange plate 40, is connected to the recycled water outlet 1502. The second heat exchange pipe is connected to the brewing water supply path. The first pipe 42 is sequentially and intermittently equipped with a recycled water external supply pipe shut-off valve 19, a recycled water external supply pipe conductivity meter 25, a recycled water external supply pump 20, a recycled water external supply pipe check valve 21, and a recycled water external supply pipe flow meter 26 along the direction close to the heat exchange plate 40. The other end of the second pipe 43 is connected to the cooling tower 39, and a recycled water external supply valve 32 is provided on the second pipe 43. The one-way valve 21 of the external supply pipeline for recycled water is used to ensure that the recycled water in the heat exchange plate 40 and the second pipeline 43 does not flow back from the recycled water outlet 1502 to the recycled water storage tank 15.
[0037] Specifically, a heat exchange plate inlet valve 22 is provided at one end of the first heat exchange pipe near the first pipe 42, and the heat exchange plate inlet valve 22 can be installed on the first pipe 42 near the end of the heat exchange plate 40. A heat exchange plate outlet valve 23 is provided at one end of the first heat exchange pipe near the second pipe 43, and the heat exchange plate outlet valve 23 can be installed on the second pipe 43 near the end of the heat exchange plate 40. A heat exchange plate drain valve 24 is also installed between the heat exchange plate outlet valve 23 and the heat exchange plate 40, which is opened when necessary to drain the recycled water in the heat exchange plate 40.
[0038] Specifically, the first heat exchange pipe is provided with a heat exchange plate recovery water inlet thermometer 27 at one end near the first pipe 42, and the second pipe 43 is provided with a heat exchange plate recovery water outlet thermometer 28 at one end near the first heat exchange pipe.
[0039] Specifically, the water system for the cooling tower using recycled water after CIP cleaning in this solution also includes an inlet pipe 47. The bottom of the recycled water storage tank 15 is equipped with a recycled water inlet pipe 17. The upper end of the recycled water inlet pipe 17 extends into the recycled water storage tank 15, and the lower end extends out of the recycled water storage tank 15, connecting to the circulation inlet and the recycled water inlet 1501 respectively. The circulation inlet and the recycled water inlet 1501 can be integrated at the lower end of the recycled water inlet pipe 17 or separately located at different positions at the lower end of the recycled water inlet pipe 17, ultimately connecting to the recycled water storage tank 15 through the upper end of the recycled water inlet pipe 17. The upper end of the inlet pipe 47 forms the circulation inlet and the recycled water inlet 1501. The end of the inlet pipe 47 furthest from the recycled water storage tank 15 can connect to the first discharge pipe 41 and the circulation pipe 46 respectively. The first discharge pipe 41 is connected to the water inlet pipe 47 through the first recycled water inlet valve 6. The first discharge pipe 41 is also equipped with a conductivity meter 4. The end of the first discharge pipe 41 away from the water inlet pipe is also equipped with a first recycled water valve 2. The first discharge port 1 is also equipped with an emptying pipe 3.
[0040] Specifically, the water system for the cooling tower using recycled water after CIP cleaning in this solution also includes a circulation pipe 46. One end of the circulation pipe 46 is connected to the second pipe 43, and the other end is connected to the lower end of the inlet pipe 47. The circulation pipe 46 is equipped with a recycled water circulation pipe outlet valve 31 and a recycled water circulation pipe inlet valve 12 at intervals. The recycled water circulation pipe outlet valve 31 is located near the second pipe 43. The connection point between one end of the circulation pipe 46 and the second pipe 43 is located between the heat exchange plate recycled water outlet thermometer 28 and the recycled water external supply valve 32. The recycled water external supply valve 32 is located near the inlet pipe. A discharge valve is also provided between the recycled water circulation pipe inlet valve 12 and the recycled water circulation pipe outlet valve 31. The circulation pipe can also be connected to the third connection port 14 on the CIP cleaning system via a third discharge pipe 49 or a water pipe. A switch valve can be installed on the third discharge pipe 49 according to actual conditions. In addition, a circulation discharge valve 13 is also provided on the circulation pipe 46. When the inlet valve 12 and outlet valve 31 of the recycled water circulation pipeline are opened, the cleaning recycled water flowing out of the recycled water storage tank 15 is heated by the heat exchange plate 40 and then flows into the circulation pipeline 46 through the outlet valve 31 of the recycled water circulation pipeline. The water in the circulation pipeline 46 can flow into the inlet pipe 47 and then into the recycled water storage tank 15 through the recycled water inlet pipe 17.
[0041] Specifically, the first pipeline 42 is also equipped with a recycled water external supply pipeline sampling valve 18, which is located near the recycled water storage tank 15 and between the recycled water storage tank 15 and the recycled water external supply pipeline shut-off valve 19. The recycled water can be sampled and tested through the recycled water external supply pipeline sampling valve 18 to ensure that there is no recycled water contamination and to maintain a clean state for both the recycling and usage systems. If contamination occurs, the recycled water in the water system can be drained promptly through the drain valve in the water system, and the water system can be cleaned.
[0042] Specifically, the brewing water supply circuit includes a brewing water external supply pipeline 44 of the water treatment station and a saccharification brewing water tank 38. One end of the second heat exchange pipeline is connected to the brewing water external supply pipeline 44 of the water treatment station or the brewing water external supply equipment 37, or connected to the brewing water external supply equipment 37 through the brewing water external supply pipeline 44 of the water treatment station. The other end is connected to the saccharification brewing water tank 38 through a connecting pipeline 45 or a water pipe. The brewing water external supply pipeline 44 of the water treatment station is equipped with a brewing water inlet valve 33 and a heat exchange plate brewing water inlet thermometer 29, and is connected to the water inlet pipeline of the brewing water tank 38. The water inlet pipeline of the brewing water tank 38 is the connecting pipeline 45. The connecting pipeline 45 is equipped with a heat exchange plate brewing water outlet thermometer 30, a brewing water outlet check valve 34, and a brewing water outlet valve 35.
[0043] During equipment cleaning and residual water recovery, the residual water after CIP cleaning will be used to push out the long-top equipment and drain it during equipment use with deoxygenated water or materials. This solution adds a recovery water pipeline to the water system to recover this water. During cleaning, the equipment or the first recovery water valve 2 on the first discharge pipe 41 is opened, and the program is closed. Deoxygenated water or materials are used to push out the residual water in the equipment or pipe, and the recovered residual water is pushed into the inlet pipe 47 through the recovery pipeline and enters the recovery water storage tank 15. The second discharge port 5 on other equipment or pipelines for discharging cleaning water can also be connected to the water system of this solution to recover the recycled water. A second discharge pipe 48 is installed at the second discharge port 5, with both ends connected to the second discharge port 5 and the CIP cleaning system, respectively. A second recovery water valve 9 and a second recovery water pipeline shut-off valve 10 are sequentially and intermittently installed on the second discharge pipe 48 along the direction closest to the CIP cleaning system. The second discharge pipe 48 is connected to the inlet pipe 47 through the second recovery water valve 9. Opening the second recovery water valve 9 and closing the second recovery water pipeline shut-off valve 10 allows water to be recovered into the recovery water storage tank 15. Each discharge pipe can be cascaded through CIP cleaning using the cleaning equipment. After cleaning the equipment or pipes, the first recovery water valve 2 and the first recovery water pipeline shut-off valve 8 installed on the first discharge pipe 41 can be opened, allowing the cleaning water to flow directly back to the corresponding pipe and back to the CIP cleaning system, effectively ensuring the cleanliness of the pipes. Each of the first discharge pipes 41 has its two ends connected to a first discharge port 1 and a first connection port 7 of the CIP cleaning system, respectively. Along the direction closest to the CIP cleaning system, the first discharge pipe 41 is sequentially equipped with a first recovery water valve 2, a conductivity meter 4, and a first recovery water pipe shut-off valve 8. A first recovery water inlet valve 6 is located between the conductivity meter 4 and the first recovery water pipe shut-off valve 8. The first discharge pipe 41 is connected to an inlet pipe 47 via the first recovery water inlet valve 6, and the other end of the inlet pipe 47 is connected to a recovery water inlet pipe 17 on the recovery water storage tank 15. When the first recovery water inlet valve 6 is closed, cleaning water can flow into the CIP cleaning system from the first connection port 7.
[0044] When the recycled water is supplied externally, since the temperature of the recycled water is approximately 60℃, while the water used in cooling tower 39 requires a temperature of approximately 30℃, the recycled water needs to be cooled to 30℃ through heat exchange before it can be supplied externally. The recycled water temperature in the recycled water storage tank 15 is approximately 60℃, which generates a large amount of water vapor. Therefore, the top of the recycled water storage tank 15 is equipped with a top vent pipe to prevent excessive pressure inside the tank. To ensure uniform temperature distribution within the tank, the upper end of the recycled water inlet pipe 17 needs to extend into the tank to reduce short-circuiting of the circulating water.
[0045] The recycled water in the recycled water storage tank 15 needs to undergo heat exchange before being supplied externally. By opening the recycled water external supply pipeline shut-off valve 19, the heat exchange plate inlet valve 22, the heat exchange plate outlet valve 23, the recycled water external supply valve 32, and the recycled water external supply pump 20, the recycled water can be directly supplied to the cooling tower 39. Simultaneously, the brewing water inlet valve 33 and the brewing water outlet valve 35 need to be opened so that the supplied recycled water undergoes heat exchange through the heat exchange plate 40. That is, the brewing water exchanges heat with the recycled water, causing the temperature of the recycled water to drop to meet the operating standards of the cooling tower 39. The recycled water in the recycled water storage tank 15 enters the first pipeline 42 from the recycled water outlet 1502. The recycled water in the first pipeline 42 enters through the heat exchange plate inlet valve 22, and after being cooled by heat exchange through the heat exchange plate 40, it flows into the second pipeline 43 from the heat exchange plate outlet valve 23. The cooled recycled water in the second pipeline 43 can then be transported to the cooling tower 39 for use.
[0046] The first pipeline 42, along the direction towards the heat exchange plate 40, is sequentially and intermittently equipped with a sampling valve 18 for the recycled water external supply pipeline, a shut-off valve 19 for the recycled water external supply pipeline, a conductivity meter 25 for the recycled water external supply pipeline, a recycled water external supply pump 20, a check valve 21 for the recycled water external supply pipeline, a flow meter 26 for the recycled water external supply pipeline, a recycled water inlet thermometer 27 for the heat exchange plate, and an inlet valve 22 for the heat exchange plate. The connecting pipeline 45, along the direction towards the brewing water tank 38, is sequentially and intermittently equipped with a brewing water outlet thermometer 30 for the heat exchange plate, a brewing water outlet check valve 34, and a brewing water outlet valve 35. The brewing water external supply pipeline 44 of the water treatment station, along the direction towards the heat exchange plate 40, is sequentially and intermittently equipped with a brewing water inlet valve 33 and a brewing water inlet thermometer 29 for the heat exchange plate. The second pipe 43 is provided with a heat exchange plate outlet valve 23, a heat exchange plate recovery water outlet thermometer 28, and a recovery water external supply valve 32 in sequence at intervals along the direction toward the cooling tower 39.
[0047] In addition, the water system using CIP cleaning water for cooling tower cooling in this scheme also includes a bypass pipe. This bypass pipe is equipped with a brewing water bypass valve 36, and both ends of the bypass pipe are connected to the brewing water external supply pipe of the water treatment station and the connecting pipe, respectively. When the recycled water is not supplied to the cooling tower 39, the brewing water inlet valve 33, brewing water outlet valve 35, and other valves can be closed, and the brewing water bypass valve 36 can be opened to supply water to the brewing water tank 38 through the bypass pipe. That is, the brewing water external supply device 37 directly supplies water to the brewing water tank 38. The connection nodes between the bypass pipe and the brewing water external supply pipe 44 and the connecting pipe 45 of the water treatment station can be referred to the appendix. Figure 1 .
[0048] During the cooling process of the recycled water circulation, specifically the process of lowering the temperature of the recycled water in the recycling unit before external supply is required, the recycled water storage tank 15 needs to lower the water temperature to the process requirement temperature of the cooling tower 39 when external supply is not needed or before external supply. This is achieved by closing the recycled water external supply valve 32 and opening the recycled water external supply pipeline shut-off valve 19, the heat exchange plate inlet valve 22, the heat exchange plate outlet valve 23, the recycled water circulation pipeline outlet valve 31, and the recycled water circulation pipeline inlet valve 12. The recycled water can circulate within the pipeline. The recycled water external supply pump 20 is then activated, allowing the recycled water to circulate within the system. Simultaneously, the brewing water inlet valve 33 and the brewing water outlet valve 35 are opened, allowing the recycled water to exchange heat through the heat exchange plate 40. The recycled water external supply pump 20 is adjusted according to the recycled water outlet thermometer 28 on the heat exchange plate to allow heat exchange between the brewing water and the recycled water, thus lowering the recycled water outlet temperature to the process requirement temperature of the cooling tower 39, meeting the external supply requirements. Once the external supply requirements are met, the cooling tower 39 can be supplied externally, effectively utilizing the recycled water. The recycled water in the recycled water storage tank 15 flows sequentially through the first pipe 42, heat exchange plate 40, second pipe 43, circulation pipe 46, and inlet pipe 47, and then returns to the recycled water storage tank 15 through the recycled water inlet pipe 17.
[0049] This solution utilizes a CIP cleaning water system for cooling tower cooling, achieving cost savings. Approximately 28,965 tons of 60°C warm water are recycled annually, with the heat energy used to heat brewing water for saccharification production, and the water used in the cooling tower.
[0050] (1) Amount saved on steam:
[0051] Based on the steam calorific value of 2756.4 KJ / kg at a pressure of 6 bar and a temperature of 158°C, the amount of steam that can be saved is:
[0052] 4.2*28965*(60-30) / 2756.4=1412.37 tons.
[0053] Based on a steam price of 300 yuan / ton, the savings would be 1412.37 * 300 = 423693.51 yuan.
[0054] (2) Amount saved on water:
[0055] If water costs 3.6 yuan per ton, the savings would be 28965 * 3.6 = 97074 yuan.
[0056] (3) In total, about 520,000 yuan can be saved per year, that is, 423,693 + 97,094 = 520,767.51 yuan.
[0057] Other aspects of the water system for cooling towers using recycled water after CIP cleaning described in this utility model are found in the prior art and will not be repeated here.
[0058] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.
Claims
1. A water recovery system for a cooling tower after CIP cleaning, characterized in that: It includes a recycling module, an external supply module, and a circulation module. Each device is equipped with a first discharge port for CIP cleaning water, and each first discharge port is equipped with a first discharge pipe. The recycling module includes a first recycling water path and a recycling water storage tank. The recycling water storage tank is equipped with a recycling water inlet and a recycling water outlet. One end of the first recycling water path is connected to each of the first discharge pipes, and the other end is connected to the recycling water inlet. The external supply module includes an external water supply path and a heat exchange plate. The external water supply path includes a first flow path and a second flow path. One end of the first flow path is connected to the recycled water outlet, and the other end is connected to one side of the heat exchange plate. The opposite side of the heat exchange plate is connected to the brewing water supply path. The first flow path is connected to one end of the second flow path through the heat exchange plate, and the other end of the second flow path is connected to the water system of the cooling tower and used to supply water to it. The circulation module includes a circulation water path, the recycled water storage tank is provided with a circulation inlet, one end of the circulation water path is connected to the second flow path, and the other end is connected to the circulation inlet.
2. The use of recovered water after CIP cleaning for the water circuit of a cooling tower according to claim 1, characterized in that: Each of the recycling modules further includes a second recycling water path, which includes a second discharge port for cleaning water and a second discharge pipe. The second discharge pipe is connected to the recycling water storage tank, and both ends of the second discharge pipe are connected to the second discharge port and the CIP cleaning system, respectively.
3. The use of recovered water after CIP cleaning for the water circuit of a cooling tower according to claim 1, characterized in that: The top of the recycled water storage tank is equipped with an exhaust pipe that connects to the outside.
4. The water system for recycling CIP cleaning water for use in cooling towers according to claim 1, characterized in that: The external water supply circuit includes a first pipe and a second pipe. The first pipe forms the first flow path, and the second pipe forms the second flow path. A first heat exchange pipe is provided on one side of the heat exchange plate, and a second heat exchange pipe is provided on the other side. The two ends of the first heat exchange pipe are respectively connected to the first pipe and the second pipe, and the other end of the first pipe is connected to the recycled water outlet. The second heat exchange pipe is connected to the brewing water supply circuit. A recycled water external supply pipe shut-off valve, a recycled water external supply pipe conductivity meter, a recycled water external supply pump, a recycled water external supply pipe check valve, and a recycled water external supply pipe flow meter are sequentially and spaced apart along the direction close to the heat exchange plate on the first pipe. The other end of the second pipe is connected to the cooling tower, and the second pipe is equipped with a water recovery supply valve.
5. The water recovery system for cooling tower after CIP cleaning according to claim 4, wherein: The first heat exchange pipe is provided with a heat exchange plate inlet valve at one end near the first pipe, and a heat exchange plate outlet valve is provided at one end near the second pipe.
6. The water recovery system for cooling tower after CIP cleaning according to claim 5, wherein: The first heat exchange pipe is also equipped with a heat exchange plate recovery water inlet thermometer at one end near the first pipe, and the second pipe is also equipped with a heat exchange plate recovery water outlet thermometer at one end near the first heat exchange pipe.
7. The CIP cleaned water recovery system for waterway system of cooling tower according to claim 6, characterized in that: It also includes a water inlet pipe. The bottom of the recycled water storage tank is provided with a recycled water inlet pipe. The upper end of the recycled water inlet pipe extends into the recycled water storage tank, and the lower end extends out of the recycled water storage tank and is connected to the circulation inlet and the recycled water inlet, respectively. The upper end of the water inlet pipe forms the circulation inlet and the recycled water inlet, and the lower end of the water inlet pipe can be connected to the first discharge pipe and the CIP cleaning system, respectively. The first discharge pipe is connected to the inlet pipe through a recycled water inlet valve. The first discharge pipe is also equipped with a conductivity meter. The end of the first discharge pipe away from the inlet pipe is also equipped with a first recycled water valve. The first discharge outlet is also equipped with an emptying pipe.
8. The CIP cleaned water recovery system for waterway system of cooling tower according to claim 7, characterized in that: It also includes a circulation pipe, one end of which is connected to the second pipe and the other end of which is connected to the lower end of the inlet pipe. The circulation pipe is provided with a recycled water circulation pipe outlet valve and a recycled water circulation pipe inlet valve at intervals. The recycled water circulation pipe outlet valve is located near the second pipe. The connection point between one end of the circulation pipe and the second pipe is located between the recycled water outlet thermometer of the heat exchange plate and the recycled water external supply valve. The recycled water external supply valve is located near the inlet pipe. A circulation discharge valve is also provided between the inlet valve and the outlet valve of the recycled water circulation pipeline.
9. The CIP cleaned water recovery system for waterway system of cooling tower according to claim 8, characterized in that: The first pipeline is also equipped with a sampling valve for the external supply of recycled water. The sampling valve for the external supply of recycled water is located close to the recycled water storage tank and is situated between the recycled water storage tank and the shut-off valve for the external supply of recycled water.
10. The CIP cleaned water recovery system for waterway system of cooling tower according to claim 4, wherein: The brewing water supply circuit includes an external brewing water supply pipeline from the water treatment station and a saccharification brewing water tank. One end of the second heat exchange pipeline is connected to the external brewing water supply pipeline from the water treatment station, and the other end is connected to the saccharification brewing water tank via a connecting pipeline. The external brewing water supply pipeline from the water treatment station is equipped with a brewing water inlet valve and a heat exchange plate brewing water inlet thermometer, and is connected to the water supply pipeline of the brewing water tank. The connecting pipeline is equipped with a heat exchange plate brewing water outlet thermometer, a brewing water outlet check valve, and a brewing water outlet valve. A bypass pipe is also provided, on which a brewing water bypass valve is installed. The two ends of the bypass pipe are respectively connected to the brewing water external supply pipe of the water treatment station and the connecting pipe.