Water-saving method and device for in-situ cleaning system for beer production

Abstract

The invention discloses a water-saving method and equipment for a CIP (clean in place) system for beer production. The method comprises the steps that a first recycling water tank is arranged and used for recycling hot water generated in the cleaning process of a CIP system, and the hot water is used for pipeline cleaning of a fermentation workshop in the beer production process, yeast recycling and pipeline cleaning between an expanding culture tank and a fermentation tank; a second recycling water tank is arranged and used for recycling brewing hot water generated in beer production, and the recycled brewing hot water is used for replacing fresh water for alkali ejection and alkali flushing; condensation heat energy of steam generated by a steam heat exchanger in the beer production process is controlled to be subjected to heat exchange with circulating water of a CIP system, the steam is converted into condensate water, and heat energy of heat exchange is used as heat energy needed in beer production. According to the invention, the water consumption of the brewing CIP system is reduced.

Description

Technical Field

[0001] The present invention relates to the field of beer production, and in particular to a water-saving method and device for a Clean In Place (CIP) system in beer production. Background Art

[0002] With the acceleration of my country's urbanization process, the shortage of water resources has become more serious. Although my country has considerable total freshwater resources, the large population and uneven geographical distribution result in low per capita water resources. Especially in industrially and agriculturally developed areas, water consumption and pollution are becoming increasingly prominent. As a major water user, beer production needs to pay attention to the use of water resources and its pollution emissions in the production process, so as to promote the transformation of the industry towards water conservation and environmental protection.

[0003] Cleaning is the removal of visible and invisible impurities on the surface being cleaned by physical or chemical action. Regular cleaning of equipment is a necessary part of many production processes and is of great significance to ensure the normal operation and efficiency of equipment. In some specific industries, such as food processing and fermentation industries, equipment cleaning is a necessary measure to ensure normal production. In the current beer production industry, the water consumption of CIP system cleaning accounts for an important part of the overall water consumption.

[0004] In the related technologies, many beer production companies have begun to realize the importance of water conservation and have taken a series of measures to reduce water use and reuse. However, due to the lack of effective technical means and management measures, many companies still have problems with water waste and low treatment efficiency, resulting in insignificant water conservation effects and difficulty in adapting to the needs under different production conditions. Therefore, a systematic method is urgently needed to effectively solve the problem of excessive water consumption. Summary of the invention

[0005] The invention provides a water-saving method, device, equipment and storable medium for an in-situ cleaning system of beer production.

[0006] According to one aspect of the present invention, a water-saving method for an in-situ cleaning system in beer production is provided, comprising: providing a recovery water tank 1 for recovering hot water generated during the scrubbing process of the CIP system, the hot water being used for pipe cleaning in a fermentation workshop, yeast recovery, and pipe cleaning between an expansion tank and a fermentation tank during the beer production process; providing a recovery water tank 2 for recovering brewing hot water generated in the beer production, the recovered brewing hot water being used to replace fresh water for alkali top and alkali flushing; controlling the condensation heat energy of steam generated by a steam heat exchanger in the beer production process to exchange heat with circulating water of the CIP system, the steam being converted into condensed water, and the heat energy of the heat exchange being used for heat energy required in the beer production.

[0007] Preferably, the method further comprises: using the injection pressure of carbon dioxide to discharge the circulating water of the CIP system to a return water pipeline, and then sending the circulating water of the CIP system back to the water tank of the water station by a reuse pump of the CIP system.

[0008] Preferably, the method also includes: setting a single water outlet hardness standard of the CIP system; controlling the opening of at least one of the following devices of the CPI system according to the hardness standard: manganese sand filter, activated carbon filter and cation exchanger, and raw sodium ion exchanger.

[0009] Preferably, the method further comprises: adjusting a bottom drain valve of a condenser of the CIP system to control the concentration multiple of circulating water of the CIP system to be within a preset value range.

[0010] Preferably, the method further comprises: recovering wastewater discharged from all workshops of the CIP system; filtering the wastewater using a filter; and softening the filtered wastewater.

[0011] Preferably, the pH value of the acidified hot water used in the CIP system is in the range of 4 to 6.

[0012] According to another aspect of the present invention, a CIP system water-saving device for beer production is provided, which is characterized in that it includes: a recovery water tank 1, used to recover hot water generated during the scrubbing process of the CIP system, the hot water is used for pipeline cleaning in the fermentation workshop, yeast recovery, and pipeline cleaning between the expansion tank and the fermentation tank during the beer production process; a recovery water tank 2, used to recover brewing hot water generated in the beer production, the recovered brewing hot water is used to replace fresh water for alkali topping and alkali flushing; a heat exchange module, used to control the condensation heat energy of the steam generated by the steam heat exchanger in the beer production process to exchange heat with the circulating water of the CIP system, the steam is converted into condensed water, and the heat energy of the heat exchange is used for the heat energy required in the beer production.

[0013] Preferably, the device also includes: a setting module for setting the single water outlet hardness standard of the CIP system; a first controller for controlling the opening of at least one of the following devices of the CPI system according to the hardness standard: manganese sand filter, activated carbon filter and cation exchanger, original sodium ion exchanger.

[0014] Preferably, the above-mentioned equipment further comprises: a regulating module, which is used to adjust the bottom drain valve of the condenser of the CIP system to control the concentration multiple of the circulating water of the CIP system to be within a preset range.

[0015] Preferably, the pH value of the acidified hot water used in the CIP system is in the range of 4 to 6.

[0016] The water-saving method and equipment for the CIP system of beer production provided by the present invention reduce the usage of hot water in the brewing CIP system by setting recovery tanks one and two; convert the condensation heat of steam into hot water for storage and standby by exchanging it with water, and recover the energy of steam, thereby achieving the effect of energy utilization and avoiding energy waste, which is of great significance both in reducing the water consumption of the brewing CIP system and reducing the waste heat emission of the entire brewing; and improves the efficiency and effect of wastewater treatment by recycling the wastewater discharged from all workshops after treatment, ensures that the quality of recycled water reaches a high standard, and promotes the recycling of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 is a flow chart of a water-saving method for a CIP system in beer production according to an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the overall process of beer CIP according to an embodiment of the present invention;

[0020] Figure 3 is a schematic diagram of a CIP water-saving device according to an embodiment of the present invention;

[0021] Figure 4 4 is a structural block diagram of a water-saving device for a CIP system of beer production according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] This embodiment provides a water-saving method for an in-situ cleaning system in beer production. Figure 1 : is a flow chart of a water-saving method for a CIP system in beer production according to an embodiment of the present invention. Figure 1 As shown, the method includes the following steps S102 to S106.

[0024] Step S102, setting a water recovery tank 1 for recovering hot water generated during the CIP system scrubbing process, and the hot water is used for pipe cleaning in the fermentation workshop, yeast recovery, and pipe cleaning between the expansion tank and the fermentation tank during the beer production process;

[0025] Step S104, setting a second water recovery tank for recovering brewing hot water generated in beer production, and the recovered brewing hot water is used to replace fresh water for alkali top-up and alkali flushing;

[0026] Step S106, controlling the condensation heat energy of steam generated by the steam heat exchanger in the beer production process to exchange heat with the circulating water of the CIP system, the steam is converted into condensed water, and the heat energy of the heat exchange is used as the heat energy required in beer production.

[0027] In the above step S106, the CIP cleaning liquid is preheated by the heat energy of the saturated condensed water of the steam heat exchanger, and the heat energy of the supplied steam is fully utilized to save the amount of steam and reduce the input cost of production. The condensed heat energy of the steam is exchanged with water to become 90-95°C hot water for storage and standby. The recovered heat energy can be used for preheating wort, CIP hot water, saccharification heating and boiler water preheating. The ejector compression method is adopted to recycle the steam. The steam recovery device completes the steam recovery. The steam passes through a thin plate with water as the medium flowing in the middle. The water is heated from 80°C to 95°C, thereby storing most of the energy of the steam. The steam itself becomes condensed water at 100°C, and then cooled by 20°C fresh water (brew water) of the CIP station to about 40°C. The 20°C fresh water (brew water) is heated to 80°C to recover the energy of the steam.

[0028] In this embodiment, by setting up recovery water tank 1 and recovery water tank 2, the usage of hot water in the brewing CIP system is reduced; by exchanging the condensation heat of steam with water to convert it into hot water for storage and standby, the energy of steam is recovered, the effect of energy utilization is achieved, the waste of energy is avoided, the water consumption of the brewing CIP system is reduced, and to a certain extent, the waste heat discharge of the entire brewing process is reduced, thereby realizing the recovery and utilization of heat energy.

[0029] It should be noted that the top alkali and flushing alkali in this application are technical means in the field of beer manufacturing. In the beer industry, top alkali and flushing alkali are two important concepts related to water quality regulation and malt saccharification process. The following is a detailed explanation:

[0030] 1. Top alkali. Top alkali usually refers to the alkaline substance added during the beer production process, especially when adjusting the water quality. Its main function is to adjust the pH value of beer and keep it within an appropriate range to promote enzyme activity and ensure the effective conversion of malt starch into sugar, thereby improving the efficiency of fermentation. The main ingredients used in top alkali: Commonly used chemicals for top alkali include sodium hydroxide (NaOH), calcium hydroxide (Ca(OH)2), etc. These substances can increase the pH value of water, thereby increasing its alkalinity. The appropriate top alkali concentration can improve the saccharification process of malt, making it easier for starch to be converted into fermentable sugars, which helps to increase the final alcohol content and flavor of the beer.

[0031] 2. Alkali flushing. Alkali flushing is mainly used in the flushing process after malt saccharification. Usually after the concentrated wort (malt saccharification liquid) is extracted, an alkaline solution is used to flush the remaining malt in order to extract as much sugar and other soluble substances as possible. The purpose of alkali flushing is to improve the efficiency of extraction and ensure that the remaining starch and sugar in the malt are fully utilized, thereby improving the economy of production and the consistency of the product. Alkali flushing can be done in the following way: warm water or water containing a small amount of alkaline substances can be used for flushing, and more soluble substances can be washed out by soaking and flushing.

[0032] refer to Figure 2 , the process can include 6 steps:

[0033] Step 1, pre-rinsing, water comes from recovery water tank 1.

[0034] Step 2, alkali top water.

[0035] Step 3, alkaline cycle.

[0036] Step 4, recovering the top alkali of the water in the water tank 2.

[0037] Step 5, flushing with the recycled water in the recycled water tank 2.

[0038] Step 6, rinse with fresh water.

[0039] In this figure, it can be seen that the circulation of water in the recovery tank achieves CIP water saving.

[0040] refer to Figure 3 , showing the positional relationship of the recovery water tank in the beer production equipment.

[0041] Preferably, during the implementation process, the circulating water of the CIP system can also be discharged to the return water pipeline by the injection pressure of carbon dioxide, and then sent back to the water tank of the tap water station by the reuse pump of the CIP system. This preferred embodiment avoids the need to fill the entire tank with a large amount of sterile purified water in order to replace the air in the tank with CO2 after the CIP clear wine tank is completed. It is achieved to replenish tap water to the circulating water tank and use the wastewater of the circulating system as daily flushing and sanitary water.

[0042] Preferably, a single water outlet hardness standard of the CIP system can be set; and the opening of at least one of the following devices of the CPI system is controlled according to the hardness standard: manganese sand filter, activated carbon filter and cation exchanger, and original sodium ion exchanger.

[0043] In this preferred embodiment, the manganese sand filter, activated carbon filter and cation exchanger, the original sodium ion exchanger controls the single water hardness standard to be less than 0.3. In this step, the sampling port is controlled, and when the hardness is greater than 0.3, the second one is turned on at the same time, and each one can be extended for 2 hours. When the hardness is greater than 0.5, regeneration is selected.

[0044] When implemented, for example, during the off-season, if the activated carbon filter is regenerated every 2 days, the number of regenerations per year can be reduced by 60.

[0045] For example, during the off-season, the manganese sand filter can be regenerated once every two days, which reduces the number of regenerations by 60 times per year.

[0046] During implementation, the high temperature area of ​​the sterilizer is prone to scaling, which affects the heat transfer efficiency. Therefore, it needs to be frequently shut down for cleaning. The high frequency of cleaning leads to increased water consumption. Adding anti-scaling and bactericides in the sterilizer water tank and the spray nozzle circulation pipeline can achieve water-saving effects to a certain extent.

[0047] Preferably, the bottom drain valve of the condenser of the CIP system can also be adjusted to control the concentration multiple of the circulating water of the CIP system within a preset value range. For example, the conductivity is tested and the discharge volume is adjusted twice a day on the roof. In this embodiment, controlling the concentration multiple can effectively ensure the safe operation of the equipment, extend the service life of the equipment, and maintain the effectiveness of the cleaning water.

[0048] As another preferred implementation, wastewater discharged from all workshops of the CIP system may be recycled; the wastewater may be filtered using a filter; and the filtered wastewater may be softened.

[0049] For example, the wastewater discharged from all workshops is treated and recycled, and the wastewater is filtered using a precision filter to remove tiny particles and microorganisms in the water. Ion exchangers are added to remove or replace ions in the wastewater to soften the water quality, and magnesium and calcium ions in the water are removed to reduce the hardness of the water. Membrane filtration technology, such as reverse osmosis (RO) and nanofiltration (NF), can be used to remove dissolved salts, organic matter, and microorganisms in the water. In this embodiment, the recycled wastewater is subjected to physical and chemical dual treatment to ensure that the effluent water quality meets national standards and to recycle water resources.

[0050] Preferably, the pH value of the acidified hot water used in the CIP system ranges from 4 to 6. In this embodiment, the use of acidified hot water can effectively remove alkaline residues, reduce the risk of water pollution, and reduce the amount of water required for subsequent cleaning, thereby improving water saving effects.

[0051] This embodiment provides a CIP water-saving method for beer. In this embodiment, through an in-depth understanding of the water usage and drainage conditions of each device unit in the brewing workshop, on the basis of the above work, the production process water, CIP washing water and various auxiliary water are calculated in detail, and water-saving measures are established for each process.

[0052] In this embodiment, the water-saving method includes the following steps S1 to S7.

[0053] Step S1: Set up a recovery water tank 1, and use the hot water in the CIP scrubbing to be used for the pipeline from fermentation to wine filtration, yeast recovery, adding pipeline and pipeline from expansion tank to fermentation tank in the fermentation room. According to the scrubbing regulations, yeast recovery and addition are once a day, expanded to fermentation once every 20 days, and fermentation to wine filtration once a day. Scrub before and after each use, and the hot water rinsing time is 15 minutes.

[0054] During the implementation process, the hot water usage time for flushing the entire pipeline can be 922 minutes. If the hot water pump flow rate is 40 cubic meters per hour, the total water consumption is 615 cubic meters.

[0055] Step S2: a second recycling water tank is set up, and the recycled brewing hot water is stored in the second recycling water tank, which is used to replace fresh water for alkali top and alkali flushing to reduce the use of fresh water.

[0056] Step S3: The CIP cleaning liquid is preheated by the heat energy of the saturated condensed water of the steam heat exchanger, and the heat energy of the supplied steam is fully utilized to save the amount of steam and reduce the input cost of production. The condensed heat energy of the steam is exchanged with water to convert 80°C water into 90-95°C hot water for storage. The recovered heat energy can be used for preheating wort, CIP hot water, saccharification heating and boiler water preheating. The steam is recycled by the ejection compression method. The steam recovery device completes the steam recovery. The steam passes through a thin plate with water as the medium flowing in the middle. The water is heated from 80°C to 95°C, thereby storing most of the energy of the steam. The steam itself becomes condensed water at 100°C, and then cooled by 20°C fresh water (brew water) of the CIP station to about 40°C. The 20°C fresh water (brew water) is heated to 80°C to recover the energy of the steam.

[0057] It should be noted that the technical solutions of step S1 to step S3 can achieve CIP water saving. Step S4 to step S7 are preferred supplementary implementation methods.

[0058] Step S4: Refill the circulating water tank with tap water, and use the wastewater from the circulating system as daily flushing and sanitary water.

[0059] In this step, carbon dioxide (CO2) is used to fill the water with pressure to discharge it into the recovery pipe, and then it is sent back to the water station tank by the reuse pump. This avoids the need to fill the entire tank with a large amount of sterile purified water in order to replace the air in the tank with CO2 after the CIP beer tank is completed.

[0060] Step S5: manganese sand filter, activated carbon filter and cation exchanger, the original sodium ion exchanger controls the single water hardness standard to be less than 0.3. In this step, the sampling port is controlled, and when the hardness is greater than 0.3, the second one is turned on at the same time, and each one can be extended for 2 hours. When the hardness is greater than 0.5, it is regenerated.

[0061] When implemented, for example, during the off-season, if the activated carbon filter is regenerated every 2 days, the number of regenerations per year can be reduced by 60.

[0062] For example, during the off-season, if the manganese sand filter is regenerated once every two days, the number of regenerations can be reduced by 60 times per year.

[0063] During implementation, the high temperature area of ​​the sterilizer is prone to scaling, which affects the heat transfer efficiency. Therefore, it needs to be frequently shut down for cleaning. The high frequency of cleaning leads to increased water consumption. Adding anti-scaling and bactericides in the sterilizer water tank and the spray nozzle circulation pipeline can achieve water-saving effects to a certain extent.

[0064] Step S6: Adjust the cooling tap water.

[0065] In this step, the concentration multiple of the circulating water can be controlled by adjusting the drain valve at the bottom of the condenser to drain the waste.

[0066] For example, take samples from the roof to test conductivity and set and adjust the sewage discharge twice a day;

[0067] Step S7: Treat the wastewater discharged from all workshops and recycle it. Use precision filters to filter the wastewater to remove tiny particles and microorganisms in the water. Add ion exchangers to remove or replace ions in the wastewater to soften the water quality. Remove magnesium ions and calcium ions in the water to reduce the hardness of the water. Use membrane filtration technology, such as reverse osmosis (RO) and nanofiltration (NF), to remove dissolved salts, organic matter, and microorganisms in the water.

[0068] Preferably, various liquid and semi-solid emissions produced daily in the saccharification workshop, fermentation workshop and wine filtration workshop are discharged into the ditch through pipes, and various measures to prevent leakage can be used to achieve a dry ground environment.

[0069] Preferably, through the heavy water pipeline modification, the heavy water tank can be used for cleaning the entire workshop after it is full, and can also be used for centrifuge slag flushing.

[0070] It should be noted that the hardness of CIP water is relatively high. Directly flushing with neutral hot water after alkali washing will produce a large amount of white powder. Acidified hot water is needed to eliminate this effect. Acidified hot water is prepared by adding nitric acid to hot water and controlling the pH value between 4 and 6. Acidified hot water can not only eliminate the effect of white powder, but also reduce the amount of hot water flushing after alkali washing. After alkali washing of pipes and equipment, flushing with acidified hot water can save more water than flushing with neutral hot water. Each time the pipe is cleaned, about 2 cubic meters of water is saved, and each time the PVPP (cross-linked polyvinylpyrrolidone) filter is flushed, about 20 cubic meters of water is saved.

[0071] Preferably, check for leaks regularly, and repair raw water pipes and tap water pipes in a timely manner to reduce losses caused by leakage due to aging of pipes.

[0072] Preferably, additional switch monitoring is provided for each CIP saccharification hot water valve, and the water consumption of each period in the workshop is counted daily.

[0073] In addition, the use process of saccharification hot water can be optimized and the use requirements of saccharification hot water can be standardized. The principle of using saccharification hot water should give priority to ensuring water for saccharification production, and set high and low alarm levels of saccharification hot water according to actual needs. When the low-level alarm of saccharification hot water is triggered, water is prohibited from being used at other water points except for saccharification production. When there is no level alarm of saccharification hot water, each water point can use water normally; when the high-level alarm of saccharification hot water is triggered, the use of saccharification hot water at each water point should be increased or the saccharification hot water should be transferred to the CIP tank for storage to avoid direct discharge of waste heat.

[0074] Do a good job in supervising and tracking the daily use of saccharification hot water, and cultivate the team's habit of consciously using saccharification hot water. Install a flow meter on the main water supply line of saccharification hot water to count the amount of saccharification hot water used. Combined with the saccharification hot water level curve, focus on checking the valve switch records and water use records of each water point when the saccharification hot water is at high and low levels, and urge the team to use saccharification hot water as required.

[0075] Implement saccharification hot water quality monitoring to ensure the quality of CIP water. Since saccharification hot water is mainly made by ice water absorbing heat when wort is cooled, aging of the cooling plate seal or excessive working pressure will cause wort to mix into the saccharification hot water and pollute the saccharification hot water system. The COD value of saccharification hot water needs to be tested regularly to ensure that the quality of saccharification hot water meets the CIP water requirements.

[0076] Check for leaks regularly, and repair raw water pipes and tap water pipes in a timely manner to reduce losses caused by leakage due to aging pipes.

[0077] Add switch monitoring for each CIP hot water valve and collect statistics on the water consumption of the workshop in each period on a daily basis.

[0078] This embodiment and its preferred embodiment reduce the use of hot water in the brewing CIP system by setting up a water recovery tank; by exchanging the condensed heat of steam with water to store hot water for standby use, and then recovering the energy of the steam, the effect of energy utilization is achieved, and energy waste is reduced. It is of great significance both in reducing the water consumption of the brewing CIP system and reducing the waste heat emission of the entire brewing; by treating and recycling the wastewater discharged from all workshops, tiny particles and microorganisms in the water can be removed, and magnesium ions and calcium ions in the water can be removed to reduce the hardness of the water, and dissolved salts, organic matter, and microorganisms in the water can also be removed.

[0079] This embodiment provides a water-saving device for a CIP system in beer production. Figure 4 : is a structural block diagram of a water-saving device for a CIP system for beer production according to an embodiment of the present invention. Figure 4 As shown, the device includes: a recovery water tank 1 72, a recovery water tank 2 74, and a heat exchange module 76, which will be described in detail below.

[0080] A water recovery tank 72 is used to recover hot water generated during the CIP system scrubbing process. The hot water is used for pipe cleaning in the fermentation workshop, yeast recovery, and pipe cleaning between the expansion tank and the fermentation tank during the beer production process.

[0081] The second water recovery tank 74 is used to recover the brewing hot water generated in the beer production, and the recovered brewing hot water is used to replace fresh water for alkali top and alkali flushing;

[0082] The heat exchange module 76 is used to control the condensation heat energy of steam generated by the steam heat exchanger in the beer production process to exchange heat with the circulating water of the CIP system, and the steam is converted into condensed water. The heat energy of the heat exchange is used as the heat energy required in the beer production.

[0083] Preferably, the above-mentioned equipment may also include: a setting module for setting the single water outlet hardness standard of the CIP system; a first controller for controlling the opening of at least one of the following devices of the CPI system according to the hardness standard: manganese sand filter, activated carbon filter and cation exchanger, original sodium ion exchanger.

[0084] Preferably, the above-mentioned device may further include: a regulating module, which is used to adjust the bottom drain valve of the condenser of the CIP system to control the concentration multiple of the circulating water of the CIP system to be within a preset range.

[0085] Preferably, the pH value of the acidified hot water used in the CIP system is in the range of 4 to 6.

[0086] In summary, through the above embodiments and their preferred implementations, a water-saving method and device for the CIP system in beer production is provided, a water recovery tank is set to reduce the use of hot water in the brewing CIP system; by exchanging the condensation heat of steam with water to store hot water for standby use, and then recovering the energy of steam, the effect of energy utilization is achieved, and energy waste is reduced. The water consumption of the brewing CIP system is reduced and the waste heat emission of the entire brewing is reduced to a certain extent, heat recovery is achieved, and the heat cycle efficiency is improved.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A water-saving method for a CIP system in beer production, characterized in that: include: A recovery water tank 1 is provided to recover the hot water generated during the scrubbing process of the CIP system, and the hot water is used for pipeline cleaning, yeast recovery, and pipeline cleaning between the expansion tank and the fermentation tank in the fermentation workshop during the beer production process; A second water recovery tank is provided for recovering the brewing hot water generated in the beer production, and the recovered brewing hot water is used to replace fresh water for alkali top-up and alkali flushing; The condensation heat energy of the steam generated by the steam heat exchanger in the beer production process is controlled to exchange heat with the circulating water of the CIP system, the steam is converted into condensed water, and the heat energy of the heat exchange is used for the heat energy required in the beer production.

2. The method according to claim 1, characterized in that The method further comprises: The circulating water of the CIP system is discharged to the return water pipeline by using the injection pressure of carbon dioxide, and then sent back to the water tank of the water station by the reuse pump of the CIP system.

3. The method according to claim 1, characterized in that The method further comprises: Setting a single outlet water hardness standard for the CIP system; Controlling the activation of at least one of the following devices of the CPI system according to the hardness standard: Manganese sand filter, activated carbon filter and cation exchanger, raw sodium ion exchanger.

4. The method according to claim 1, characterized in that: The method further comprises: The bottom drain valve of the condenser of the CIP system is adjusted to control the concentration multiple of the circulating water of the CIP system to be within a preset value range.

5. The method according to any one of claims 1 to 4, characterized in that The method further comprises: Recycle wastewater discharged from all workshops of the CIP system; filtering the wastewater using a filter; The filtered wastewater is softened.

6. The method according to any one of claims 1 to 4, characterized in that The pH value of the acidified hot water used in the CIP system ranges from 4 to 6.

7. A water-saving device for a CIP system in beer production, characterized in that: include: A water recovery tank 1 is used to recover the hot water generated during the CIP system scrubbing process. The hot water is used for pipeline cleaning, yeast recovery, and pipeline cleaning between the expansion tank and the fermentation tank in the beer production process in the fermentation workshop; A second water recovery tank is used to recover the brewing hot water generated in the beer production, and the recovered brewing hot water is used to replace fresh water for alkali top and alkali flushing; The heat exchange module is used to control the condensation heat energy of the steam generated by the steam heat exchanger in the beer production process to exchange heat with the circulating water of the CIP system, the steam is converted into condensed water, and the heat energy of the heat exchange is used for the heat energy required in the beer production.

8. The device according to claim 7, characterized in that The device also includes: A setting module, used to set the single outlet water hardness standard of the CIP system; A first controller is used to control the activation of at least one of the following devices of the CPI system according to the hardness standard: Manganese sand filter, activated carbon filter and cation exchanger, raw sodium ion exchanger.

9. The device according to claim 7, characterized in that Also includes: The regulating module is used to regulate the bottom drain valve of the condenser of the CIP system to control the concentration multiple of the circulating water of the CIP system to be within a preset range.

10. The device according to any one of claims 7 to 9, characterized in that The pH value of the acidified hot water used in the CIP system ranges from 4 to 6.

Images