Fen-flavor liquor brewing process waste heat recovery system

Abstract

The utility model relates to the technical field of waste heat recovery, in particular to a fen-flavor liquor brewing process waste heat recovery system which comprises a flue gas waste heat recovery system and a liquor cooling waste heat recovery system. The wine cooling waste heat recovery system comprises a wine tank, a biomass gasifier, a first steam boiler, a second steam boiler, a first wine steamer, a second wine steamer, an air and water cooling waste heat recoverer, a water cooling waste heat recoverer, a first high-temperature heat pump, a second high-temperature heat pump and a wine jar. The flue gas waste heat recovery system comprises a flue gas dividing wall heat exchanger, a flue gas total heat exchanger, a third high-temperature heat pump and a chimney. Compared with the prior art, the waste heat recovery system in the Fen-flavor liquor brewing process, provided by the utility model, adopts an air-water cooling / water cooling double-cooling device, so that liquor cooling waste heat can be effectively recovered, and the energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery system in the brewing process of light-fragrance liquor. Background Art

[0002] Fenjiu is a kind of fragrant liquor, which is usually brewed with pure grains by solid fermentation. The traditional solid liquor production is made of raw materials such as sorghum, rice, glutinous rice, corn, and wheat, solid saccharification and fermentation, open production, natural microbial inoculation and koji making, Zhen barrel distillation, pottery jar or wine sea storage and aging, etc. A series of unique processes and equipment are used to brew. The raw materials are moistened with water after being crushed, and this process is called moistening. After the raw materials are moistened and softened for 24 hours, they are put into the steamer and steamed for 80 minutes. This process is called steaming. After steaming, they are cooled and dispersed. After cooling to a certain temperature, the koji powder is increased in proportion, stirred evenly, and put into the ground tank for fermentation. Before fermentation, the ground tank should be cleaned with pepper water to sterilize and disinfect. After 28 days of sealed fermentation, the fermented grits have a certain viscosity, and then rice husks, husks and other auxiliary materials are added and stirred evenly to make them loose. The added auxiliary materials are also sterilized and disinfected by high-temperature steam. Then the grits with auxiliary materials are distilled in the retort. The steam that flows out after cooling is the big stubble wine. At this time, the raw materials are repeatedly added with koji, fermented and distilled to produce the second-crop liquor. The first-crop liquor and the second-crop liquor are mixed in proportion and stored in a ceramic wine cellar to produce the finished Fenjiu.

[0003] It can be seen that Fenjiu requires a lot of heat sources during the brewing process. The existing heat source for winemaking is the steam generated by gas boilers, which is sent to the bottom of the wine retort for heating and distillation. On the one hand, natural gas is a non-renewable fossil energy; on the other hand, there is a lot of waste heat in the existing Fenjiu brewing process that has not been recycled. Therefore, transforming the heat source of the winemaking process and recycling the heat energy of the winemaking process can achieve good economic, environmental and social benefits.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a waste heat recovery system for the brewing process of light-fragrance liquor, through which the heat energy of the brewing process can be recovered and utilized, and good economic benefits, environmental benefits and social benefits can be achieved.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A waste heat recovery system for the brewing process of light-fragrance liquor, including a flue gas waste heat recovery system and a liquor cooling waste heat recovery system;

[0008] The wine cooling waste heat recovery system comprises a wine tank, a biomass gasifier, a first steam boiler, a second steam boiler, a first wine sieve, a second wine sieve, an air-water cooling waste heat recovery device, a water-cooling waste heat recovery device, a first high-temperature heat pump, a second high-temperature heat pump and a wine tank;

[0009] The wine tank is connected to the biomass gasifier, the biomass gasifier is connected to the first steam boiler, the first steam boiler is connected to the air-water cooling waste heat recovery device, the air-water cooling waste heat recovery device is respectively connected to the first high-temperature heat pump and the wine tank; the second steam boiler is connected to the second wine sieve, the second wine sieve is connected to the second high-temperature heat pump and the wine tank;

[0010] The flue gas waste heat recovery system includes a flue gas inter-wall heat exchanger, a flue gas full heat exchanger, a third high-temperature heat pump and a chimney. The flue gas inter-wall heat exchanger is respectively connected to the biomass gasifier, the first steam boiler, the second steam boiler, and the flue gas full heat exchanger. The flue gas full heat exchanger is respectively connected to the chimney and the third high-temperature heat pump.

[0011] Preferably, the second steam boiler is connected to a natural gas pipeline.

[0012] Preferably, the wine cooling waste heat recovery system also includes a flash tank, and the flash tank is respectively connected to the first high-temperature heat pump, the second high-temperature heat pump, and the second wine condenser.

[0013] Preferably, the wine cooling waste heat recovery system also includes a distributed photovoltaic power generation system, and the distributed photovoltaic power generation system is respectively connected to the first high-temperature heat pump, the second high-temperature heat pump, and the third high-temperature heat pump.

[0014] Preferably, the flue gas waste heat recovery system further includes a plate heat exchanger, and the plate heat exchanger is respectively connected to the third high-temperature heat pump, the grain soaking water tank, and the winery heating system;

[0015] The grain soaking water tank and the winery heating system are also connected to the first high-temperature heat pump.

[0016] Preferably, the air-water-cooled waste heat recovery device includes a cooling coil, an air inlet, an exhaust outlet, and a fan; the wine-making distillation gas in the first wine sieve enters through the wine-making steam inlet of the air-water-cooled waste heat recovery device; the fan drives the air in the air-water-cooled waste heat recovery device to enter from the air inlet and be discharged from the exhaust outlet; the flowing air of the air-water-cooled waste heat recovery device exchanges heat and mass with the cooling water of the cooling coil and the wine-making distillation gas respectively.

[0017] Preferably, the first high-temperature heat pump is also connected to a water well.

[0018] Preferably, a water distribution pipe is arranged on the top of the air-water cooling waste heat recovery device, and the spray water of the water distribution pipe is sprayed on the surface of the cooling coil.

[0019] Preferably, the flash tank is also connected to the first wine sieve.

[0020] Preferably, a non-condensable gas exhaust pipe is also provided on the top of the air-water cooling waste heat recovery device.

[0021] Compared with the prior art, the waste heat recovery system for the brewing process of light-fragrance liquor provided by the utility model has the following beneficial effects:

[0022] 1. The utility model provides a waste heat recovery system for the brewing process of light-fragrance liquor. A flue gas inter-wall heat exchanger and a flue gas full-heat heat exchanger are used to recover a large amount of sensible heat and latent heat in the flue gas, and then the temperature of the recovered hot water is further increased by a high-temperature heat pump for heating the winery or soaking grain water.

[0023] 2. In a waste heat recovery system for the brewing process of a light-fragrance liquor provided by the utility model, in terms of the cooling process of the distilled liquor, the existing air cooling process is transformed into an air-water cooling / water cooling dual cooling process, which effectively recovers the waste heat of steam in the liquor making process. In the air-water cooling process, the waste heat is used as the basic heat source, and the air heat is recovered after passing through the air-water cooling waste heat recovery device and the high-temperature heat pump. Part of it is used for soaking grain water and heating water in the brewing process, and part of it is "flashed" into steam through the hot water in the flash tank and sent to the bottom of the wine retort for heating and distillation.

[0024] 3. In the waste heat recovery system of the light-fragrance liquor brewing process provided by the utility model, in the water-cooling cooling process, after the water-cooling waste heat recovery device exchanges heat, the hot water is heated by a high-temperature heat pump, and then passes through a flash tank to become steam, which is sent to the bottom of the wine retort for heating and distillation. At the same time, the remaining lees after the wine production can be used in the biomass gasification furnace to produce biogas, and sent to the steam boiler to produce steam for wine making.

[0025] 4. In the waste heat recovery system for the brewing process of a light-fragrance liquor provided by the utility model, in terms of electricity consumption of the waste heat recovery system, distributed photovoltaic power generation can be used on the roof of the winery, and part of the surplus electricity can be supplied to high-temperature heat pumps and other equipment in the system, thereby reducing electricity costs and carbon emissions.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the planar layout structure of a waste heat recovery system for a light-fragrance liquor brewing process provided in an embodiment of the utility model.

[0029] Figure 2 A schematic structural diagram of a wind-water-cooled waste heat recovery device in a waste heat recovery system for a light-fragrance liquor brewing process provided by an embodiment of the utility model.

[0030] The diagram is as follows:

[0031] 100. Flue gas waste heat recovery system; 200. Wine cooling waste heat recovery system.

[0032] 1. Wine vat; 2. Biomass gasifier; 3. Biomass natural gas; 4. Natural gas; 5. First steam boiler; 6. Second steam boiler; 7. First wine filter; 8. Second wine filter; 9. Air-water cooled waste heat recovery device; 10. Water-cooled waste heat recovery device; 11. First high-temperature heat pump; 12. Second high-temperature heat pump; 13. Winery heating system; 14. Flash tank; 15. Wine vat; 16. Flue gas inter-wall heat exchanger; 17. Flue gas full heat exchanger; 18. Third high-temperature heat pump; 19. Plate heat exchanger; 20. Chimney; 21. Distributed photovoltaic power generation system; 22. Winery roof; 23. Well.

[0033] 91. Air inlet; 92. Exhaust outlet; 93. Fan; 94. Water distribution pipe; 95. Cooling coil. DETAILED DESCRIPTION

[0034] The technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the utility model.

[0035] like Figure 1 As shown, an embodiment of the utility model provides a waste heat recovery system for the brewing process of light-fragrance liquor, including a flue gas waste heat recovery system 100 and a liquor cooling waste heat recovery system 200.

[0036] The wine cooling waste heat recovery system 200 includes a wine tank 1, a biomass gasification furnace 2, a first steam boiler 5, a second steam boiler 6, a first wine sieve 7, a second wine sieve 8, an air-water cooling waste heat recovery device 9, a water-cooling waste heat recovery device 10, a first high-temperature heat pump 11, a second high-temperature heat pump 12 and a wine vat 15; the wine tank 1 is connected to the biomass gasification furnace 2, the biomass gasification furnace 2 is connected to the first steam boiler 5, the first steam boiler 5 is connected to the air-water cooling waste heat recovery device 9, the air-water cooling waste heat recovery device 9 is connected to the first high-temperature heat Pump 11 and wine tank 15; the second steam boiler 6 is connected to the second wine sieve 8, and the second wine sieve 8 is connected to the second high-temperature heat pump 12 and the wine tank 15; the flue gas waste heat recovery system 100 includes a flue gas inter-wall heat exchanger 16, a flue gas full heat heat exchanger 17, a third high-temperature heat pump 18 and a chimney 20, and the flue gas inter-wall heat exchanger 16 is respectively connected to the biomass gasification furnace 2, the first steam boiler 5, the second steam boiler 6, and the flue gas full heat heat exchanger 17, and the flue gas full heat heat exchanger 17 is respectively connected to the chimney 20 and the third high-temperature heat pump 18. The second steam boiler 6 is connected to the natural gas 4 pipeline. The wine cooling waste heat recovery system 200 also includes a flash tank 14, and the flash tank 14 is respectively connected to the first high-temperature heat pump 11, the second high-temperature heat pump 12, and the second wine sieve 8. The wine cooling waste heat recovery system 200 also includes a distributed photovoltaic power generation system 21, which is respectively connected to the first high-temperature heat pump 11, the second high-temperature heat pump 12, and the third high-temperature heat pump 18. The flue gas waste heat recovery system 100 also includes a plate heat exchanger 19, which is respectively connected to the third high-temperature heat pump 18, the grain soaking water tank, and the winery heating system 13; the grain soaking water tank and the winery heating system 13 are also connected to the first high-temperature heat pump 11.

[0037] Specifically, the flue gas generated by the combustion of the first steam boiler 5, the second steam boiler 6 and the biomass gasifier 2 enters the flue gas inter-wall heat exchanger 16, and the circulating water is preheated before entering the boiler to recover the sensible heat of the flue gas. After that, it enters the flue gas total heat exchanger 17, and the cold water produced by the third high-temperature heat pump 18 is used to deeply recover the condensation latent heat of water vapor in the flue gas, and the flue gas temperature is reduced to below the dew point, and discharged from the chimney 20. The third high-temperature heat pump 18 recovers heat at the same time, and the high-temperature water flowing out of its condenser enters the plate heat exchanger 19, and the heat is further introduced into the grain soaking water tank or the winery heating system 13.

[0038] The wine lees are used as biomass raw materials to supply the biomass gasifier 2 to produce biomass natural gas 3, which is sent to the first steam boiler 5 to produce steam and supply the first wine steamer for steam distillation. The liquor steam coming out of the first wine steamer is condensed into low-temperature original wine after passing through the wind and water cooling waste heat recovery device 9, and enters the wine tank 15 for storage. The hot air at the outlet of the air-cooled equipment is heat exchanged through the wind and water cooling waste heat recovery device 9. The water side outlet water temperature of the wind and water cooling waste heat recovery device 9 is raised to 20°C and then sent to the first high-temperature heat pump 11 evaporation side to release heat. The water temperature drops to 15°C and returns to the wind and water cooling waste heat recovery device 9. The 115°C inlet water on the condensation side of the first high-temperature heat pump 11 is heated to 120°C and enters the flash tank 14. The flashed 120°C saturated steam is supplied to the wine industry production of each brewing workshop through the existing boiler room sub-cylinder, or the heat is further introduced into the hot water through the first high-temperature heat pump 11 for use in the grain soaking water tank or the winery heating system 13, thereby improving the waste heat utilization rate.

[0039] The steam generated by the second steam boiler 6 supplied by the natural gas 4 is supplied to the second wine retort for distillation. The liquor steam coming out of the second wine retort is condensed into low-temperature original liquor after passing through the water-cooled waste heat recovery device 10 and enters the wine tank 15 for storage. The hot water exchanged by the water-cooled waste heat recovery device 10 has a temperature of 25°C and is sent to the second high-temperature heat pump 12 to be heated to 120°C and enter the flash tank 14. After flashing out 120°C saturated steam, it is sent to the bottom of the second wine retort for heating and distillation, thereby reducing the amount of natural gas 4 and forming a waste heat recycling mode.

[0040] The distributed photovoltaic power generation system 21 is arranged on the winery roof 22, and the photovoltaic energy storage is fully utilized to supply the surplus electricity to the first high-temperature heat pump 11, the second high-temperature heat pump 12 and the third high-temperature heat pump 18 and other equipment, so as to realize the electric drive of the high-temperature heat pump to produce steam and use renewable electricity to reduce carbon emissions and operating costs.

[0041] like Figure 2 As shown, in a waste heat recovery system for the brewing process of a light-flavor liquor provided by an embodiment of the utility model, the wind-water cooling waste heat recovery device 9 includes a cooling coil 95, an air inlet 91, an exhaust outlet 92, and a fan 93; the wine distillation gas in the first wine sieve 7 enters through the wine steam inlet of the wind-water cooling waste heat recovery device 9; the fan 93 drives the air in the wind-water cooling waste heat recovery device 9 to enter from the air inlet 91 and is discharged from the exhaust outlet 92; the flowing air of the wind-water cooling waste heat recovery device 9 exchanges heat and mass with the cooling water of the cooling coil 95 and the wine distillation gas. The first high-temperature heat pump 11 is also connected to a well 23. A water distribution pipe 94 is also arranged at the top of the wind-water cooling waste heat recovery device 9, and the spray water of the water distribution pipe 94 is sprayed on the surface of the cooling coil 95. The flash tank 14 is also connected to the first wine sieve 7. A non-condensable gas exhaust pipe is also arranged at the top of the wind-water cooling waste heat recovery device 9.

[0042] Specifically, there is a circulating cooling system in the air-water cooling waste heat recovery device 9. The wine-making distillation gas enters the cylinder from the wine-making steam inlet, and the cooling water enters the cooling coil 95 through the cooling water upper water pipe through the first high-temperature heat pump 11. The cooling water in the pipe path in the cylinder exchanges heat with the wine vapor in the cylinder for cooling. At the same time, the outdoor circulating air enters the cylinder, and the air flow in the cylinder is driven by the fan 93. Heat and mass exchange is carried out between the outdoor air and the cooling water and the wine vapor. At the same time, spray water is used as an auxiliary heat dissipation. It is sprayed on the surface of the cooling water pipe through the water distribution pipe 94 to complete the heat exchange with the cooling water in the pipe. The cooling water heated by heat exchange enters the first high-temperature heat pump 11 through the cooling water outlet pipe. After the wine-making steam is cooled, it is condensed into white wine and enters the wine tank 15 from the wine outlet. The non-condensable gas is discharged through the non-condensable gas exhaust pipe on the top of the upper head.

[0043] In the present invention, the existing gas-fired boiler for brewing has a large amount of water vapor in the exhaust gas and a high exhaust temperature. Because it fails to reduce the flue gas to below the dew point temperature, it cannot effectively recover the latent heat of water vapor condensation, which leads to low efficiency and energy waste. It is proposed to use flue gas inter-wall heat exchangers, flue gas full heat exchangers and high-temperature heat pumps to reduce the flue gas temperature to below the dew point temperature, fully recover the sensible heat and latent heat in the flue gas, and transfer the waste heat to hot water for soaking grain water or heating in the winery. The exhaust temperature is reduced from 90°C to about 30°C, the flue gas whitening effect is obvious, and the thermal efficiency of the boiler is improved.

[0044] In addition, in order to solve the problem of heat dissipation in the air-cooling process of distilled liquor, an air-water cooling / water-cooling dual cooling device is used to effectively recover the waste heat from liquor cooling and reduce energy consumption. The present invention proposes an air-water cooling / water-cooling dual cooling recovery process, a part of the distilled liquor passes through an air-water cooling waste heat recovery device, and the hot air at the outlet of the air-cooling equipment is exchanged with heat through an air-cooling waste heat recovery heat exchanger, in the air-water cooling waste heat recovery device, there is a circulating cooling system, the wine-making distillation gas enters the cylinder from the wine-making steam inlet, the cooling water passes through the high-temperature heat pump and enters the cooling coil via the cooling water upper water pipe, the cooling water in the cylinder exchanges heat and cools the wine steam in the cylinder, at the same time, the outdoor circulating air enters the cylinder, the air flow in the cylinder is driven by the fan, and heat and mass are exchanged between the outdoor air and the cooling water and the wine steam, the spray water is sprayed on the surface of the cooling water pipe through the water distribution system as auxiliary heat dissipation to complete the heat exchange with the cooling water in the pipe, the cooling water heated by heat exchange enters the high-temperature heat pump through the cooling water outlet pipe, at the same time, the wine-making steam is cooled and condensed into white wine and enters the wine tank from the wine outlet, and the non-condensable gas is discharged through the non-condensable gas exhaust pipe on the top of the upper head. After the outlet temperature of the cooling water rises to 20°C, it is pressurized by a booster pump and sent to the evaporation side of the high-temperature water source heat pump for heat release. The water temperature drops to 15°C and returns to the wind-water cooling waste heat recovery device. The 115°C inlet water on the condensing side of the high-temperature heat pump is heated to 120°C and enters the flash tank. The flashed 120°C saturated steam is supplied to the wine industry production of each brewing workshop through the existing boiler room cylinder, or the heat is further introduced into hot water for soaking grain water and heating in the winery. Another part of the distilled wine is recovered by the water-cooled waste heat recovery device while refrigerating, and the quality of the heat source is improved by the high-temperature heat pump. The hot water is then evaporated by the flash tank to form low-pressure steam, which is sent to the bottom of the wine retort for heating and distillation, realizing the recycling of waste heat. In addition, almost all the lees produced by the current winery are sold as feed for beef cattle breeding, with low utilization rate. In view of this, the present invention utilizes part of the lees, comprehensively adopts thermochemical conversion and biological conversion technology, produces biomass natural gas through a biomass gasifier, and sends it to the steam boiler as fuel for steam supply, realizing the recycling of waste heat. To address the electricity consumption issue of the waste heat recovery system, distributed photovoltaic power generation can be used on the roof of the winery, and the surplus photovoltaic power can be used for equipment such as high-temperature heat pumps to meet the basic load of electricity demand and reduce carbon emissions and electricity costs.

[0045] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0046] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0047] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A waste heat recovery system for the brewing process of light-fragrance liquor, characterized in that: Including flue gas waste heat recovery system and wine cooling waste heat recovery system; The wine cooling waste heat recovery system comprises a wine tank, a biomass gasifier, a first steam boiler, a second steam boiler, a first wine sieve, a second wine sieve, an air-water cooling waste heat recovery device, a water-cooling waste heat recovery device, a first high-temperature heat pump, a second high-temperature heat pump and a wine tank; The wine tank is connected to the biomass gasifier, the biomass gasifier is connected to the first steam boiler, the first steam boiler is connected to the air-water cooling waste heat recovery device, the air-water cooling waste heat recovery device is respectively connected to the first high-temperature heat pump and the wine tank; the second steam boiler is connected to the second wine sieve, the second wine sieve is connected to the second high-temperature heat pump and the wine tank; The flue gas waste heat recovery system includes a flue gas inter-wall heat exchanger, a flue gas full heat exchanger, a third high-temperature heat pump and a chimney. The flue gas inter-wall heat exchanger is respectively connected to the biomass gasifier, the first steam boiler, the second steam boiler, and the flue gas full heat exchanger. The flue gas full heat exchanger is respectively connected to the chimney and the third high-temperature heat pump.

2. A waste heat recovery system for the brewing process of light-flavor liquor according to claim 1, characterized in that: The second steam boiler is connected to a natural gas pipeline.

3. A waste heat recovery system for the brewing process of light-flavor liquor according to claim 2, characterized in that: The wine cooling waste heat recovery system also includes a flash tank, which is respectively connected to the first high-temperature heat pump, the second high-temperature heat pump, and the second wine condenser.

4. A waste heat recovery system for the brewing process of light-flavor liquor according to claim 3, characterized in that: The wine cooling waste heat recovery system also includes a distributed photovoltaic power generation system, which is respectively connected to the first high-temperature heat pump, the second high-temperature heat pump, and the third high-temperature heat pump.

5. A waste heat recovery system for the brewing process of light-flavor liquor according to claim 4, characterized in that: The flue gas waste heat recovery system also includes a plate heat exchanger, which is respectively connected to the third high-temperature heat pump, the grain soaking water tank, and the winery heating system; The grain soaking water tank and the winery heating system are also connected to the first high-temperature heat pump.

6. A waste heat recovery system for the brewing process of light-flavor liquor according to claim 5, characterized in that: The air-water-cooled waste heat recovery device includes a cooling coil, an air inlet, an exhaust outlet, and a fan; the wine-making distillation gas in the first wine sieve enters through the wine-making steam inlet of the air-water-cooled waste heat recovery device; the fan drives the air in the air-water-cooled waste heat recovery device to enter from the air inlet and be discharged from the exhaust outlet; the flowing air of the air-water-cooled waste heat recovery device exchanges heat and mass with the cooling water of the cooling coil and the wine-making distillation gas respectively.

7. A waste heat recovery system for the brewing process of light-flavor liquor according to claim 6, characterized in that: The first high-temperature heat pump is also connected to a water well.

8. The waste heat recovery system for the brewing process of light-flavor liquor according to claim 7 is characterized in that: A water distribution pipe is also arranged on the top of the air-water cooling waste heat recovery device, and the spray water of the water distribution pipe is sprayed on the surface of the cooling coil.

9. A waste heat recovery system for the brewing process of light-flavor liquor according to claim 8, characterized in that: The flash tank is also connected to the first wine sieve.

10. A waste heat recovery system for the brewing process of light-flavor liquor according to claim 9, characterized in that: A non-condensable gas exhaust pipe is also arranged on the top of the air-water cooling waste heat recovery device.

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