Wine-making waste heat recovery system

Abstract

The invention discloses a wine-making waste heat recovery system in the technical field of wine-making heat energy recovery, which comprises a wine retort, a cooler, a heat storage water tank, a first pipeline and a second pipeline, the wine retort is communicated with the cooler through the first pipeline, and heated water subjected to heat exchange in the cooler is communicated with the heat storage water tank through the second pipeline; the system further comprises a cold storage water tank, a third pipeline and a fermented grain spreading bed, the first end and the second end of the third pipeline are both communicated with the cold storage water tank, part of the pipeline between the first end and the second end of the third pipeline is located in the fermented grain spreading bed, and the system further comprises a heat exchange unit which comprises a first evaporator, a first condenser, a first refrigerant pipe, a first compressor and a first throttling valve. Heat in the cold storage water tank is transmitted to the heat storage water tank through the heat exchange unit. The technical problems of incomplete energy recovery, low recovery rate and production halt caused by high-temperature environment in the prior art are solved, the energy recovery comprehensiveness and recovery rate are improved, and continuous production of Luzhou-flavor liquor in high-temperature seasons is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of heat recovery for brewing, and in particular to a waste heat recovery system for brewing. Background Art

[0002] For the brewing industry, a large amount of high-temperature steam, hot water and other energy will be generated in the process of steaming grains, distilling, and cooling high-temperature mash. The traditional operation method is to directly discharge and treat the high-temperature steam and hot water instead of using them, which results in a large amount of energy waste. In the traditional brewing process, for example:

[0003] 1. During the grain steaming process, the exhaust heat energy is directly discharged, resulting in energy waste;

[0004] 2. During the distillation process, high-temperature cooling water is directly discharged or cooled through a cooling tower, without efficient heat recovery, resulting in energy waste;

[0005] 3. During the cooling process of the fermented mash after cooking, the heat emitted is not efficiently recovered, but directly discharged into the air. The heat emitted creates a high temperature environment in the work area, especially in the hot season, which affects both the work of the staff and the activity of microorganisms. This is because in the production process of traditional Luzhou-flavor liquor, in order to ensure the fermentation quality of the fermented mash, the "low-temperature cellaring" process has been adhered to. The temperature of the fermented mash entering the cellar is generally controlled at 18℃~22℃. When the ambient temperature exceeds 28℃, the temperature of the fermented mash entering the cellar is too high, and the strains that are beneficial to fermentation, ester production and aroma production will age and degenerate rapidly, and their vitality will decrease, and the starch in the fermented mash cannot be fully utilized. For this reason, it is generally necessary to stop production for 1-2 months or adjust the production time to cope with the impact of the high temperature environment in the hot season on the production of Luzhou-flavor liquor.

[0006] After searching, it was found that in the prior art, Chinese patent CN116007420A discloses a heat recovery system for liquor brewing, including a wine retort, a closed cooler and a heat recovery water tank. The wine retort includes a retort body and a bottom pot. A part of the wine vapor in the wine retort enters the closed cooler through the first pipe, and the condensed wine enters the wine receiving pool. The heated water in the closed cooler that has undergone heat exchange enters the heat recovery water tank through the second pipe; another part of the wine vapor directly enters the heat recovery water tank and undergoes heat exchange in the steam heat exchange unit. After the two parts of the wine vapor undergo heat exchange, the cooling water in the heat recovery water tank is heated, thereby realizing heat recovery and reuse. However, this patent only recycles the circulating water in the wine distillation stage, and does not recycle the energy of the other wine brewing links mentioned above. Therefore, its energy recovery is not comprehensive and the energy recovery rate is low, resulting in a large amount of energy waste. In addition, it cannot solve the problem of shutdown caused by high temperature in the hot season. Summary of the invention

[0007] In order to solve the technical problems of incomplete energy recovery, low energy recovery rate and production suspension caused by high temperature environment in the prior art, the present invention provides a winemaking waste heat recovery system, which can effectively solve the energy waste in the mash cooling process of liquor brewing and the production suspension caused by high temperature environment.

[0008] The technical solution adopted by the present invention to solve its technical problem is:

[0009] The winemaking waste heat recovery system includes a wine retort, a cooler, a heat storage tank, a first pipeline and a second pipeline. The wine retort includes a retort body and a bottom pot. The steam generated by the wine retort is connected to the cooler through the first pipeline. The heated water in the cooler after heat exchange is connected to the heat storage tank through the second pipeline. The system also includes a cold storage water tank, a third pipeline and a mash bed. The first end and the second end of the third pipeline are both connected to the cold storage water tank. A portion of the pipeline between the first end and the second end of the third pipeline is located in the mash bed. The third pipeline is provided with a first water pump and a first valve. The system also includes a heat exchanger. The heat unit, the heat inside the cold storage water tank is transferred to the hot water storage tank through the heat exchange unit, the heat exchange unit includes a first evaporator, a first condenser, a first refrigerant pipe, a first compressor and a first throttle valve, the first evaporator has a first heat exchange cavity, the first heat exchange cavity is connected to the cold storage water tank, the first condenser has a second heat exchange cavity, the second heat exchange cavity is connected to the hot water storage tank, the first refrigerant pipe is a ring-shaped closed pipeline, part of the first refrigerant pipe is located in the first heat exchange cavity and the second heat exchange cavity, the first compressor and the first throttle valve are arranged on the first refrigerant pipe.

[0010] Furthermore, it also includes a wind cabinet located at the workstation where the mash bed is located, the wind cabinet has an air outlet function, and also includes a fourth pipe, the fourth pipe is provided with a second valve, the first end of the fourth pipe is connected to the water inlet side of the third pipe, the second end of the fourth pipe is connected to the water outlet side of the third pipe, the wind cabinet has an air outlet duct inside, and part of the pipe between the first end and the second end of the fourth pipe is located in the air outlet duct.

[0011] Furthermore, a fan is provided in the mash bed, and an exhaust duct for air flow is provided in the mash bed. The fan is located in the exhaust duct, and part of the third pipe between the first end and the second end is located in the exhaust duct.

[0012] Furthermore, it also includes a steam regeneration subsystem, which includes a second refrigerant pipe, a second evaporator, a second condenser, a second compressor, a second throttle valve and a flash tank. The second evaporator has a third heat exchange chamber, the second condenser has a fourth heat exchange chamber, the second refrigerant pipe is a ring-shaped closed pipeline, part of the second refrigerant pipe is located in the third heat exchange chamber and the fourth heat exchange chamber, the second compressor and the second throttle valve are arranged on the second refrigerant pipe, and also includes a fifth pipeline, a sixth pipeline and a seventh pipeline. A second water pump is arranged on the fifth pipeline, the hot water storage tank is connected to the fourth heat exchange chamber through the fifth pipeline, the flash tank is connected to the fourth heat exchange chamber through the sixth pipeline, the flash tank is connected to the bottom pot through the seventh pipeline, and a steam compressor is arranged on the seventh pipeline.

[0013] Furthermore, the wine steamer is equipped with a boiler water supply pipe, a steam supply pipe, a steam boiler and a soft water tank. The water outlet of the soft water tank is connected to the steam boiler through the boiler water supply pipe, and the steam boiler is connected to the bottom pot through the steam supply pipe.

[0014] Furthermore, it also includes an eighth pipeline and a return pipe. The eighth pipeline is provided with a third water pump. The hot water storage tank is connected with the third heat exchange chamber through the eighth pipeline. The third heat exchange chamber is connected with the soft water tank through the return pipe.

[0015] Furthermore, it also includes a ninth pipeline and a tenth pipeline, one end of the ninth pipeline is connected to the soft water tank, the other end of the ninth pipeline is connected to the cooler, the ninth pipeline is provided with a third valve, one end of the tenth pipeline is connected to the soft water tank, the other end of the tenth pipeline is connected to the cold water tank, and the tenth pipeline is provided with a fourth valve.

[0016] Furthermore, the cooler includes a cold wine tank and a jacket, the jacket is arranged on the outside of the cold wine tank, the gap between the cold wine tank and the jacket forms a accommodating chamber, the bottom of the accommodating chamber is provided with a water inlet, the top of the accommodating chamber is provided with a drain outlet, and also includes an eleventh pipe and a twelfth pipe, the water inlet is connected to the cold water storage tank through the eleventh pipe, the eleventh pipe is provided with a fourth water pump and a fifth valve, and the drain outlet is connected to the hot water storage tank through the twelfth pipe.

[0017] Furthermore, multiple circles of spiral pipes are arranged in the accommodating cavity, and the spiral pipes are arranged around the central axis of the cold wine tank, and also include a thirteenth pipe and a fourteenth pipe. The thirteenth pipe is provided with a sixth valve. One end of the spiral pipe is connected to the eleventh pipe through the thirteenth pipe, and the other end of the spiral pipe is connected to the cold water tank through the fourteenth pipe.

[0018] Furthermore, the jacket has a three-layer structure, including an outer layer, an inner layer and a middle layer. The outer layer and the inner layer are both made of 314 stainless steel material, and the middle layer is made of aluminum-magnesium material and B1 grade rubber-plastic insulation material.

[0019] The beneficial effects of the present invention are:

[0020] 1. This scheme proposes a waste heat recovery system for brewing, which not only covers the heat recovery in the distillation process, but also adds the heat recovery in the mash cooling process. The hot water storage tank absorbs the heat from the heated water inside the cooler. In addition, the closed loop composed of the first refrigerant pipe, the first evaporator, the first compressor, the first condenser and the first throttle valve is introduced to absorb the heat of the hot water exchange inside the cold water storage tank and introduce the heat into the hot water storage tank. Through the combined use of the cold water storage tank, the third pipeline and the mash bed, the heat emitted during the mash cooling process is absorbed by the cooling water in the third pipeline, and the heat is transferred to the hot water storage tank through the cold water storage tank, realizing the effective recovery of the heat emitted during the mash cooling process. This design can significantly improve the energy utilization rate of the entire brewing process, reduce energy waste, and reduce production costs. In addition, in hot seasons with high temperatures, this solution can also cool the mash and recover the heat from the air around the spreading station to ensure that the mash's temperature entering the cellar is controlled at 18°C ​​to 22°C, thereby ensuring the fermentation quality of the mash and avoiding the problem of production stoppage caused by reduced bacterial activity due to the high temperature environment in the hot season.

[0021] 2. This plan can absorb the heat from the mash bed operation area by adding a wind cabinet and the fourth pipeline, cool down the operation environment, and thus control the temperature of the mash entering the cellar. In order to ensure the fermentation quality of the mash, the "low-temperature cellaring" process has been adhered to. The cellaring temperature is generally controlled at 18°C ​​to 22°C. When the ground temperature exceeds 28°C, the bacteria that are beneficial to fermentation, ester production and aroma production will age and degenerate rapidly, and their vitality will decrease, and the starch in the mash cannot be fully utilized. The air outlet function of the wind cabinet helps to accelerate the cooling process of the mash. At the same time, the cooling water is guided to the air outlet through the fourth pipeline, which can not only realize heat recovery, but also reduce the mash to a suitable temperature to ensure the fermentation quality.

[0022] 3. This solution sets a fan and an exhaust duct in the mash bed, which not only promotes air circulation and accelerates the cooling speed of the mash, but also guides cooling water to the exhaust duct through the third pipe, uses the water flow to take away more heat, and improves the efficiency of heat recovery.

[0023] 4. This solution introduces a steam regeneration subsystem, which converts the hot water in the heat storage tank into high-temperature steam through the second refrigerant pipe, the second evaporator, the second condenser, the second compressor, the second throttle valve and the flash tank, providing steam supplement for the wine steamer, thus realizing the secondary utilization of recovered heat. This design not only improves the overall thermal efficiency of the system, but also reduces dependence on external energy and reduces production costs.

[0024] 5. This solution ensures the high-quality and stable steam supply required in the brewing process by configuring the boiler water supply pipe, steam supply pipe, steam boiler and soft water tank.

[0025] 6. This solution adds an eighth pipe and a return pipe, so that the hot water in the heat storage tank is transported to the soft water tank after the heat is absorbed by the second evaporator and then used as normal temperature or low temperature recovered water, forming an efficient water recycling system, which not only reduces energy waste but also avoids waste of water resources.

[0026] 7. This scheme sets up the ninth pipeline and the tenth pipeline. When the ambient temperature is low, the first evaporator and the first condenser may not be started. The soft water tank directly provides cooling water to the cooler through the ninth pipeline. After the cooling water cools the cooler, it is discharged into the hot water storage tank, providing a backup heat energy recovery path and enhancing the flexibility and adaptability of the system. The soft water tank provides water for the cold water storage tank through the tenth pipeline.

[0027] 8. The design of the cooler of this scheme adopts the form of a cold wine tank plus a jacket. The gap between the jacket and the cold wine tank forms a receiving chamber for heat exchange. This design not only ensures the cooling efficiency, but also simplifies the structure and facilitates maintenance. The cooling water supplied to the receiving chamber adopts a bottom-in-top-out design. On the one hand, it ensures that the cooling water fills the receiving chamber to achieve the best cooling effect. On the other hand, the bottom of the receiving chamber is in contact with the cooling water, and the top of the receiving chamber is in contact with the heated water, so that the cold wine tank maintains a state of hot top and cold bottom.

[0028] 9. In this solution, multiple turns of spiral pipes are arranged in the accommodating chamber, and the multiple turns of spiral pipes are used to reduce the temperature of cooling water inside the accommodating chamber, and can indirectly cool the liquid in the cold wine tank.

[0029] 10. The jacket of this scheme adopts a three-layer structure, in which the outer and inner layers are made of 314 stainless steel, and the middle layer is made of aluminum-magnesium material and B1 grade rubber-plastic insulation material. This combination not only has good corrosion resistance and mechanical strength, but also has good insulation effect, which can effectively reduce heat loss and improve energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the winemaking waste heat recovery system of the present invention;

[0031] The markings in the figure are: 1-wine steamer, 101-steamer body, 102-bottom pot, 2-cooler, 201-cold wine tank, 202-jacket, 3-hot water storage tank, 4-cold water storage tank, 5-dregs bed, 6-first water pump, 7-first valve, 8-first evaporator, 9-first condenser, 10-first compressor, 11-first throttle valve, 12-wind cabinet, 13-second valve, 14-air outlet, 15-fan, 16-exhaust duct, 17-second Evaporator, 18-second condenser, 19-second compressor, 20-second throttle valve, 21-flash tank, 22-second water pump, 23-steam compressor, 24-steam boiler, 25-soft water tank, 26-third water pump, 27-third valve, 28-fourth valve, 29-water inlet, 30-drainage outlet, 31-fourth water pump, 32-fifth valve, 33-sixth valve, 34-wine barrel, 35-fifth water pump, 36-sixth water pump. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the embodiments of the present application more clearly expressed, the present invention is further described below in conjunction with the accompanying drawings.

[0033] First of all, it needs to be stated that the technical solutions of the embodiments of the present application are clearly and completely described. The described embodiments are part of the embodiments of the present application, and are not limitations of the present invention. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0034] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as “first”, “second”, “upper”, “lower”, “left”, “right”, “inner”, “outer”, “axial” or “radial” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They are not intended to indicate or imply that the device or element referred to must have a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present invention.

[0035] It should be noted that, in the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Reference Figure 1 The present invention provides a wine-making waste heat recovery system.

[0037] The optimal embodiment of the present application includes a wine picking subsystem, a heat recovery subsystem, a workstation cooling subsystem and a steam regeneration subsystem. The wine picking subsystem is a part in which the soft water tank 25 supplies water to the steam boiler 24, and the steam boiler 24 supplies steam to the bottom pot 102 of the wine retort 1. The wine vapor generated by the wine retort 1 is cooled in the cooler 2 to obtain wine liquid; the heat recovery subsystem is a part in which the heat in the cold storage water tank 4 is transferred to the hot water storage tank 3 through a heat exchanger; the workstation cooling subsystem is a part in which the third and fourth pipelines are set up to cool the mash bed 5 and the working environment with the help of the cooling water in the cold storage water tank 4, and the heat is absorbed into the cold storage water tank 4, and the heat in the cold storage water tank 4 is transferred to the hot water storage tank 3 through the heat exchanger; the steam regeneration subsystem is a part in which the hot water in the hot water storage tank 3 is further heated to generate steam to provide supplementary steam for the bottom pot 102, thus forming a complete and circulating winemaking waste heat recovery system.

[0038] 1. In high temperature seasons, when the ambient temperature is too high to meet the requirements of the brewing process and it is necessary to further control the temperature of the mash entering the cellar and the ambient temperature of the brewing operation area, start the wine picking subsystem, heat recovery subsystem, workstation cooling subsystem and steam regeneration subsystem.

[0039] (1) In the wine picking subsystem, the soft water in the soft water tank 25 enters the steam boiler 24, is heated by the steam boiler 24 to generate boiler steam, and then enters the wine retort 1 to heat the mash. The boiler steam heats the mash and forms a mixed gas with the wine molecules, which is cooled by the cooler 2 to form liquid wine, and finally flows into the wine collection barrel 34.

[0040] (2) In the heat recovery subsystem, the cooling water in the cold water storage tank 4 enters the first heat exchange chamber of the first evaporator 8 through the sixth water pump 36 to cool down and then returns to the cold water storage tank 4, so that the temperature of the cooling water is constant. A part of the cooling water in the cold water storage tank 4 enters the receiving chamber of the cooler 2 through the fourth water pump 31 and the fifth valve 32, and enters the hot water storage tank 3 after condensing the wine vapor; another part of the cooling water also enters the workstation cooling subsystem through the first water pump 6 and the first valve 7 to cool down the mash and the wine-making operation area, and transfers the heat in the wine-picking subsystem and the workstation cooling subsystem to the hot water storage tank 3.

[0041] (3) In the workstation cooling subsystem, the cooling water in the cold storage water tank is divided into two paths by the first water pump 6 and enters the mash bed 5 and the wind cabinet 12 respectively, and returns to the cold storage water tank 4 after cooling the high-temperature mash and the brewing operation area. The system uses cooling water to reduce the temperature of the mash to ensure that the mash entering the cellar meets the process requirements. At the same time, the system passes the cooling water to the wind cabinet 12 to provide cold air to the brewing operation area, thereby improving the ambient temperature of the brewing operation area.

[0042] (4) In the steam regeneration subsystem, part of the hot water in the hot water storage tank 3 enters the second evaporator 17 through the third water pump 26 to cool down and then flows into the soft water tank 25 of the wine picking subsystem. The other part of the hot water enters the second condenser 18 through the second water pump 22 to absorb heat and generate high-temperature and high-pressure hot water. The high-temperature and high-pressure hot water enters the flash tank 21 to release pressure and partially vaporizes. The other part of the hot water that absorbs heat during the vaporization process returns to the second condenser 18 through the bottom pipe of the flash tank 21 to absorb heat, and then enters the flash tank 21 to vaporize, thus circulating. The low-temperature and low-pressure steam generated by the flash tank 21 is compressed by the steam compressor 23 to generate high-temperature and high-pressure saturated steam above 130°C, and enters the wine picking subsystem to supplement the steam required for wine making.

[0043] 2. In non-high temperature seasons, when the ambient temperature can meet the requirements of the winemaking process, turn off the heat recovery subsystem and the workstation cooling subsystem, while keeping the wine picking subsystem and steam regeneration subsystem running.

[0044] (1) In the wine-collecting subsystem, part of the soft water in the soft water tank 25 enters the steam boiler 24, is heated by the steam boiler 24 to generate boiler steam, and then enters the wine retort 1 to heat the mash. The boiler steam heats the mash and forms a mixed gas with the wine molecules, which is cooled by the cooler 2 to form liquid wine, and finally flows into the wine collection barrel 34. Another part of the soft water in the soft water tank 25 enters the cooler 2 through the third valve 27, absorbs the heat of the wine steam, and then enters the hot water storage tank 3 from bottom to top.

[0045] (2) In the steam regeneration subsystem, part of the hot water in the hot water storage tank 3 enters the second evaporator 17 through the third water pump 26 to cool down and then flows into the soft water tank 25 of the wine picking subsystem. The other part of the hot water enters the second condenser 18 through the second water pump 22 to absorb heat and generate high-temperature and high-pressure hot water. The high-temperature and high-pressure hot water enters the flash tank 21 to release pressure and partially vaporizes. The other part of the hot water that absorbs heat during the vaporization process returns to the second condenser 18 through the bottom pipe of the flash tank 21 to absorb heat, and then enters the flash tank 21 to vaporize, thus circulating. The low-temperature and low-pressure steam generated by the flash tank 21 is compressed by the steam compressor 23 to generate high-temperature and high-pressure saturated steam above 130°C, and enters the wine picking subsystem to supplement the steam required for wine making.

[0046] It should be noted that the first condenser 9, the first evaporator 8, the second condenser 18 and the second evaporator 17 are all mature equipment in the prior art, and their specific internal structures are not repeated here. The present invention only draws on the condensers and evaporators of the prior art.

[0047] like Figure 1As shown, in some embodiments, a wine-making waste heat recovery system is provided, comprising a wine retort 1, a cooler 2, a heat storage tank 3, a first pipe and a second pipe, the wine retort 1 comprises a retort body 101 and a bottom pot 102, the steam generated by the wine retort 1 is connected to the cooler 2 through the first pipe, the cooling water in the cooler 2 is heat-exchanged with the steam generated by the wine retort 1, the heated water in the cooler 2 after heat exchange is connected to the heat storage tank 3 through the second pipe, the system also comprises a cold storage tank 4, a third pipe and a mash bed 5, the first end and the second end of the third pipe are both connected to the cold storage tank 4, and a portion of the pipe between the first end and the second end of the third pipe is located in the mash bed 5, The third pipeline is provided with a first water pump 6 and a first valve 7, and also includes a heat exchange unit. The heat inside the cold storage water tank 4 is transferred to the hot water storage tank 3 through the heat exchange unit. The heat exchange unit includes a first evaporator 8, a first condenser 9, a first refrigerant pipe, a first compressor 10 and a first throttle valve 11. The first evaporator 8 has a first heat exchange cavity, which is connected to the cold storage water tank 4. The first condenser 9 has a second heat exchange cavity, which is connected to the hot water storage tank 3. The first refrigerant pipe is a ring-shaped closed pipeline. Part of the first refrigerant pipe is located in the first heat exchange cavity and the second heat exchange cavity. The first compressor 10 and the first throttle valve 11 are arranged on the first refrigerant pipe.

[0048] In the above embodiment, for the connection relationship between the cold storage water tank 4 and the first evaporator 8, a pipeline can be set to connect the cold storage water tank 4 with the first heat exchange chamber of the first evaporator 8, and the refrigerant inside the first refrigerant pipe is used to absorb the heat of the cold storage water tank 4; two pipelines can also be set to connect the cold storage water tank 4 with the first heat exchange chamber of the first evaporator 8, so that the cold storage water tank 4, the two pipelines and the first evaporator 8 form a closed loop, and a sixth water pump 36 is set on one of the pipelines to accelerate the introduction of water flow from the cold storage water tank 4 to the first heat exchange chamber, thereby improving the heat exchange efficiency. Similarly, for the connection relationship between the hot water storage tank 3 and the first condenser 9, a pipe can be set to connect the hot water storage tank 3 with the second heat exchange chamber of the first condenser 9, and the refrigerant inside the first refrigerant pipe is used to release the heat absorbed from the cold water storage tank 4, thereby increasing the temperature of the water inside the hot water storage tank 3; two pipes can also be set to connect the hot water storage tank 3 with the second heat exchange chamber of the first condenser 9, so that the hot water storage tank 3, the two pipes and the first condenser 9 form a closed loop, and a fifth water pump 35 is set on one of the pipes to accelerate the introduction of water flow from the hot water storage tank 3 to the second heat exchange chamber, thereby improving the heat exchange efficiency.

[0049] The working principle of the first refrigerant pipe, the first evaporator 8, the first compressor 10, the first condenser 9 and the first throttle valve 11 is as follows: the first compressor 10 extracts the refrigerant of the first refrigerant pipe from the first evaporator 8 and presses it into the first refrigerant pipe in the first condenser 9. After being compressed by the first compressor 10, the refrigerant is in a high-pressure gas state. The refrigerant is liquefied in the first condenser 9 and releases heat, and then generates heat exchange with the water inside the hot water storage tank 3, which is used for heating the hot water storage tank 3. In the next stage, the high-pressure liquid refrigerant is depressurized by the throttling effect of the first throttle valve 11, and the low-pressure liquid refrigerant is vaporized in the first evaporator 8 and absorbs heat, and then generates heat exchange with the water inside the cold water storage tank 4, which is used for cooling the cold water storage tank 4. In this way, the refrigerant circulates in the first refrigerant pipe in a closed loop, and the heat in the cold water storage tank 4 is transferred to the hot water storage tank 3.

[0050] The first end and the second end of the third pipeline are both connected to the cold storage water tank 4, and part of the pipeline between the first end and the second end of the third pipeline is located in the mash bed 5. The third pipeline is provided with a first water pump 6 and a first valve 7. The third pipeline is at least partially located in the mash bed 5, and the cooling water inside the third pipeline is used to take away the heat emitted when the high-temperature mash is cooled, and transfer it to the cold storage water tank 4, and then to the hot storage water tank 3 through the heat exchange unit. The first water pump 6 and the first valve 7 are used to control the start and stop of the flow of cooling water.

[0051] The wine steamer 1 can be used for both steaming grain and distilling. In this way, the scheme realizes the heat recovery of steaming grain, distilling and cooling the fermented grains, making the energy recovery more comprehensive, improving the energy recovery rate, and reducing the energy waste in the brewing process. In addition, the heat recovery in the cooling stage of the fermented grains can also improve the fermentation quality of the fermented grains. The "low temperature into the cellar" feature of the fermentation process of the fermented grains, the cellar temperature is generally controlled at 18℃~22℃, which is beneficial to the fermentation, ester production and aroma production of yeast and other strains, and avoids the problem of production suspension caused by the reduced activity of strains due to the high temperature environment in the hot season.

[0052] like Figure 1 As shown, in some embodiments, it also includes a wind cabinet 12 located at the workstation where the mash bed 5 is located, the wind cabinet 12 has an air outlet function, and also includes a fourth pipe, a second valve 13 is provided on the fourth pipe, the first end of the fourth pipe is connected to the water inlet side of the third pipe, the second end of the fourth pipe is connected to the water outlet side of the third pipe, and the wind cabinet 12 has an air outlet duct 14 inside, and part of the pipe between the first end and the second end of the fourth pipe is located in the air outlet duct 14.

[0053] A wind cabinet 12 is arranged at the workstation where the mash bed 5 is located. The wind cabinet 12 has an air outlet 14 inside. The fourth pipe is at least partially located in the air outlet 14, so that the wind cabinet 12 blows out cool air. The cooling water in the fourth pipe absorbs heat from the environment and transfers it to the cold storage water tank 4, and then transfers it to the hot storage water tank 3 with the help of a heat exchanger. In addition, this design can also improve the working environment of the workers.

[0054] like Figure 1 As shown, in some embodiments, a fan 15 is provided in the mash bed 5 , and an exhaust duct 16 for air flow is provided in the mash bed 5 . The fan 15 is located in the exhaust duct 16 , and part of the third pipe between the first end and the second end is located in the exhaust duct 16 .

[0055] On the basis of the above-mentioned embodiment, a fan 15 is additionally provided on the mash bed 5, an exhaust duct 16 is provided inside the mash bed 5, and the third pipe is at least partially located in the exhaust duct 16, so as to further increase the heat exchange efficiency, so that the heat emitted by the high-temperature mash on the mash bed 5 is absorbed by the cooling water in the third pipe, thereby achieving the purpose of cooling the high-temperature mash.

[0056] like Figure 1 As shown, in some embodiments, a steam regeneration subsystem is also included, and the steam regeneration subsystem includes a second refrigerant pipe, a second evaporator 17, a second condenser 18, a second compressor 19, a second throttle valve 20 and a flash tank 21. The second evaporator 17 has a third heat exchange cavity, and the second condenser 18 has a fourth heat exchange cavity. The second refrigerant pipe is a ring-shaped closed pipeline, and part of the second refrigerant pipe is located in the third heat exchange cavity and the fourth heat exchange cavity. The second compressor 19 and the second throttle valve 20 are arranged on the second refrigerant pipe, and also include a fifth pipeline, a sixth pipeline and a seventh pipeline. A second water pump 22 is arranged on the fifth pipeline, the hot water storage tank 3 is connected to the fourth heat exchange cavity through the fifth pipeline, the flash tank 21 is connected to the fourth heat exchange cavity through the sixth pipeline, the flash tank 21 is connected to the bottom pot 102 through the seventh pipeline, and a steam compressor 23 is arranged on the seventh pipeline.

[0057] The working principle of the second refrigerant pipe, the second evaporator 17, the second compressor 19, the second condenser 18 and the second throttle valve 20 is the same as that of the aforementioned heat exchange unit, and will not be described in detail here. The hot water inside the heat storage tank 3 is introduced into the fourth heat exchange chamber of the second condenser 18 through the second water pump 22. The second condenser 18 releases heat and heats the hot water to form high-temperature and high-pressure hot water. The high-temperature and high-pressure hot water enters the flash tank 21 and partially vaporizes after releasing the pressure. It is then compressed by the steam compressor 23 to form high-temperature and high-pressure steam, providing additional steam supply for the wine steamer 1. Furthermore, a pipeline is set at the bottom of the flash tank 21 and connected to the second condenser 18. A part of the high-temperature and high-pressure hot water inside the flash tank 21 vaporizes and enters the steam compressor 23. The other part of the hot water that absorbs heat during the vaporization process returns to the second condenser 18 through the pipeline to absorb heat, and then enters the flash tank 21 again, so as to circulate.

[0058] like Figure 1 As shown, in some embodiments, the wine retort 1 is equipped with a boiler water supply pipe, a steam supply pipe, a steam boiler 24 and a soft water tank 25. The water outlet of the soft water tank 25 is connected to the steam boiler 24 through the boiler water supply pipe, and the steam boiler 24 is connected to the bottom pot 102 through the steam supply pipe. Here, the wine retort 1 is equipped with a steam boiler 24 and a soft water tank 25 to provide high-quality and stable steam.

[0059] like Figure 1 As shown, in some embodiments, an eighth pipe and a return pipe are also included. The eighth pipe is provided with a third water pump 26. The hot water storage tank 3 is connected with the third heat exchange chamber through the eighth pipe, and the third heat exchange chamber is connected with the soft water tank 25 through the return pipe.

[0060] An eighth pipe and a water return pipe are provided here to recover the low-temperature water inside the second evaporator 17 and connect it with the soft water tank 25 to form an efficient water cycle.

[0061] like Figure 1 As shown, in some embodiments, a ninth pipe and a tenth pipe are also included, one end of the ninth pipe is connected to the soft water tank 25, the other end of the ninth pipe is connected to the cooler 2, and the ninth pipe is provided with a third valve 27, one end of the tenth pipe is connected to the soft water tank 25, the other end of the tenth pipe is connected to the cold water tank 4, and the tenth pipe is provided with a fourth valve 28.

[0062] The purpose of the setting here is that when the ambient temperature is low, the heat exchange between the hot water storage tank 3 and the cold water storage tank 4, as well as the cooling process of the mash bed 5 can be turned off. The soft water tank 25 directly provides cooling water to the cooler 2 through the ninth pipeline. After the cooling water cools the cooler 2, it is discharged into the hot water storage tank 3, providing a backup heat energy recovery path, enhancing the flexibility and adaptability of the system. The soft water tank 25 provides water to the cold water storage tank 4 through the tenth pipeline.

[0063] like Figure 1 As shown, in some embodiments, the cooler 2 includes a cold wine tank 201 and a jacket 202, the jacket 202 is arranged outside the cold wine tank 201, and the gap between the cold wine tank 201 and the jacket 202 forms a accommodating cavity, a water inlet 29 is provided at the bottom of the accommodating cavity, a drain outlet 30 is provided at the top of the accommodating cavity, and also includes an eleventh pipe and a twelfth pipe, the water inlet 29 is connected to the cold water storage tank 4 through the eleventh pipe, a fourth water pump 31 and a fifth valve 32 are provided on the eleventh pipe, and the drain outlet 30 is connected to the hot water storage tank 3 through the twelfth pipe.

[0064] The cooler 2 is provided with a cold wine tank 201 and a jacket 202, and a receiving chamber is formed between the cold wine tank 201 and the jacket 202. Cooling water enters from the bottom of the receiving chamber and is discharged from the top, so that the cold wine tank 201 maintains a state of being hot on the top and cold on the bottom. When performing a distillation operation, a wine barrel 34 is connected to the bottom of the cold wine tank 201, and the cooled wine flows into the wine barrel 34. In addition to using the cooler 2 structure of this embodiment, the cooler 2 before this embodiment can also use a cooler 2 of existing mature technology.

[0065] like Figure 1 As shown, in some embodiments, a plurality of spiral pipes are arranged in the accommodating cavity, and the spiral pipes are arranged around the central axis of the cold wine tank 201, and also include a thirteenth pipe and a fourteenth pipe. The thirteenth pipe is provided with a sixth valve 33. One end of the spiral pipe is connected to the eleventh pipe through the thirteenth pipe, and the other end of the spiral pipe is connected to the cold water tank 4 through the fourteenth pipe.

[0066] In this embodiment, a plurality of spiral pipes are arranged in the accommodating chamber, and the plurality of spiral pipes are used to reduce the temperature of the cooling water inside the accommodating chamber, and can indirectly cool the liquid in the cold wine tank 201 .

[0067] In some embodiments, the jacket 202 is a three-layer structure, including an outer layer, an inner layer and an intermediate layer, the outer layer and the inner layer are made of 314 stainless steel, and the intermediate layer is made of aluminum-magnesium material and B1-grade rubber-plastic insulation material. The outer layer and the inner layer are made of 314 stainless steel material, which has good corrosion resistance and mechanical strength, and the intermediate layer is made of aluminum-magnesium material and B1-grade rubber-plastic insulation material, which has good insulation effect, can effectively reduce heat loss, and improve energy efficiency.

[0068] The first valve 7, the second valve 13, the third valve 27, the fourth valve 28, the fifth valve 32 and the sixth valve 33 of the present invention are preferably solenoid valves, and pneumatic valves, hydraulic valves or manual valves may also be used.

[0069] The winemaking waste heat recovery system of the present invention can achieve the following results:

[0070] 1. Keep the brewing cooling water temperature stable at around 20°C, reducing the brewing cooling water consumption by about 70%.

[0071] Second, it can provide saturated steam above 130°C, which supplements the steam required for brewing and reduces the steam consumption of brewing by about 47%.

[0072] 3. In high temperature seasons, when the ambient temperature reaches above 35°C, the system will control the temperature of the mash entering the cellar at around 20°C, and the ambient temperature of the brewing area at around 30°C, which can ensure continuous production of brewing and improve the working environment of workers.

[0073] After the system is applied, it can not only recycle the waste heat from the grain steaming, distillation and mash cooling brewing processes, but also convert it into the steam required for brewing, reduce the discharge of high-temperature cooling water, and realize the cooling of mash and the brewing operation area, and control the temperature of mash entering the cellar, thereby achieving the purpose of energy conservation and emission reduction in the liquor industry and continuous production of Luzhou-flavor liquor in a high-temperature environment.

Claims

1. A winemaking waste heat recovery system, comprising a wine retort (1), a cooler (2), a heat storage tank (3), a first pipe and a second pipe, wherein the wine retort (1) comprises a retort body (101) and a bottom pot (102), the steam generated by the wine retort (1) is connected to the cooler (2) through the first pipe, and the heated water in the cooler (2) after heat exchange is connected to the heat storage tank (3) through the second pipe, wherein: The invention also comprises a cold storage water tank (4), a third pipeline and a mash bed (5), wherein the first end and the second end of the third pipeline are both in communication with the cold storage water tank (4), a portion of the pipeline between the first end and the second end of the third pipeline is located in the mash bed (5), the third pipeline is provided with a first water pump (6) and a first valve (7), and further comprises a heat exchange unit, wherein the heat inside the cold storage water tank (4) is transferred to the hot storage water tank (3) via the heat exchange unit, and the heat exchange unit comprises a first evaporator (8), a first condenser (9), A first refrigerant pipe, a first compressor (10) and a first throttle valve (11), the first evaporator (8) having a first heat exchange chamber, the first heat exchange chamber being connected to a cold water storage tank (4), the first condenser (9) having a second heat exchange chamber, the second heat exchange chamber being connected to a hot water storage tank (3), the first refrigerant pipe being a ring-shaped closed pipeline, part of the first refrigerant pipe being located in the first heat exchange chamber and the second heat exchange chamber, the first compressor (10) and the first throttle valve (11) being arranged on the first refrigerant pipe.

2. The winemaking waste heat recovery system according to claim 1, characterized in that: It also includes a wind cabinet (12) located at the workstation where the mash bed (5) is located, the wind cabinet (12) has an air outlet function, and also includes a fourth pipe, the fourth pipe is provided with a second valve (13), the first end of the fourth pipe is connected to the water inlet side of the third pipe, the second end of the fourth pipe is connected to the water outlet side of the third pipe, the wind cabinet (12) has an air outlet duct (14) inside, and a portion of the fourth pipe between the first end and the second end is located in the air outlet duct (14).

3. The winemaking waste heat recovery system according to claim 1, characterized in that: A fan (15) is arranged in the mash bed (5), and an exhaust duct (16) for air flow is arranged in the mash bed (5). The fan (15) is located in the exhaust duct (16), and a portion of the third duct between the first end and the second end is located in the exhaust duct (16).

4. The winemaking waste heat recovery system according to any one of claims 1 to 3, characterized in that: The invention also includes a steam regeneration subsystem, which includes a second refrigerant pipe, a second evaporator (17), a second condenser (18), a second compressor (19), a second throttle valve (20) and a flash tank (21). The second evaporator (17) has a third heat exchange chamber, the second condenser (18) has a fourth heat exchange chamber, the second refrigerant pipe is a ring-shaped closed pipeline, part of the second refrigerant pipe is located in the third heat exchange chamber and the fourth heat exchange chamber, the second compressor (19) and the second throttle valve (20) are arranged on the second refrigerant pipe, and also includes a fifth pipeline, a sixth pipeline and a seventh pipeline. The fifth pipeline is provided with a second water pump (22), the hot water storage tank (3) is connected to the fourth heat exchange chamber through the fifth pipeline, the flash tank (21) is connected to the fourth heat exchange chamber through the sixth pipeline, the flash tank (21) is connected to the bottom pot (102) through the seventh pipeline, and the seventh pipeline is provided with a steam compressor (23).

5. The winemaking waste heat recovery system according to claim 4, characterized in that: The wine steamer (1) is equipped with a boiler water supply pipe, a steam supply pipe, a steam boiler (24) and a soft water tank (25); the water outlet of the soft water tank (25) is connected to the steam boiler (24) through the boiler water supply pipe, and the steam boiler (24) is connected to the bottom pot (102) through the steam supply pipe.

6. The winemaking waste heat recovery system according to claim 5, characterized in that: It also includes an eighth pipeline and a return pipe. The eighth pipeline is provided with a third water pump (26). The hot water storage tank (3) is connected to the third heat exchange chamber through the eighth pipeline. The third heat exchange chamber is connected to the soft water tank (25) through the return pipe.

7. The winemaking waste heat recovery system according to claim 5, characterized in that: The system further comprises a ninth pipeline and a tenth pipeline, wherein one end of the ninth pipeline is connected to the soft water tank (25), and the other end of the ninth pipeline is connected to the cooler (2), and the ninth pipeline is provided with a third valve (27); one end of the tenth pipeline is connected to the soft water tank (25), and the other end of the tenth pipeline is connected to the cold water storage tank (4), and the tenth pipeline is provided with a fourth valve (28).

8. The winemaking waste heat recovery system according to claim 1, 2, 3, 5, 6 or 7, characterized in that: The cooler (2) comprises a cold wine tank (201) and a jacket (202), wherein the jacket (202) is arranged outside the cold wine tank (201), and a gap between the cold wine tank (201) and the jacket (202) forms a receiving chamber, a water inlet (29) is arranged at the bottom of the receiving chamber, and a water outlet (30) is arranged at the top of the receiving chamber, and further comprises an eleventh pipe and a twelfth pipe, wherein the water inlet (29) is connected to the cold water storage tank (4) through the eleventh pipe, a fourth water pump (31) and a fifth valve (32) are arranged on the eleventh pipe, and the water outlet (30) is connected to the hot water storage tank (3) through the twelfth pipe.

9. The winemaking waste heat recovery system according to claim 8, characterized in that: A plurality of spiral pipes are arranged in the accommodating chamber, the spiral pipes are arranged around the central axis of the cold wine tank (201), and also include a thirteenth pipe and a fourteenth pipe. The thirteenth pipe is provided with a sixth valve (33). One end of the spiral pipe is connected to the eleventh pipe through the thirteenth pipe, and the other end of the spiral pipe is connected to the cold water storage tank (4) through the fourteenth pipe.

10. The winemaking waste heat recovery system according to claim 8, characterized in that: The jacket (202) is a three-layer structure, including an outer layer, an inner layer and a middle layer. The outer layer and the inner layer are both made of 314 stainless steel material, and the middle layer is made of aluminum-magnesium material and B1 grade rubber-plastic insulation material.

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