A heat recovery system for winery

Abstract

The invention relates to the technical field of heat recovery systems for wineries, and specifically to a heat recovery system for wineries; heat generated when cooling wine in a liquor distillation system is recovered through a high-temperature heat pump system and a low-temperature heat pump system, and the recovered heat is used to produce high-temperature steam of about 125°C through the high-temperature heat pump system, so that the steam can enter the wine sieve again to distill the wine sieve, and part of the high-temperature water enters the low-temperature heat pump system after passing through the high-temperature heat pump system, and enters the cooler after being processed by the low-temperature heat pump system, so as to control the temperature of the cooling process of the wine steam, thereby controlling the quality of the wine, and making full use of the waste heat generated from the cooler; the invention solves the problem that in the current process of distilling the wine sieve, the separated high-temperature water vapor is often directly discharged, thereby causing a large amount of heat energy waste, and the temperature of the wine outlet cannot be controlled, resulting in unstable wine quality.

Description

Technical Field

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

[0002] Liquor is made from grains as the main raw materials, with big qu, small qu, bran qu, enzyme preparations and yeast as saccharification and fermentation agents. It is made into distilled liquor through cooking, saccharification, fermentation, distillation, aging and blending. The main energy-consuming links in the liquor brewing process include: steaming, transportation, grain moistening, packaging, etc.; the main energy-consuming equipment includes: grinder, crane, water pump, fan, wine steamer, cleaning and packaging machine, etc. The company's traditional inefficient production methods, rough management, and backward process equipment will lead to a large amount of energy consumption in each brewing link.

[0003] Currently, in the process of distilling wine, a cooling device is used to cool the wine vapor. The high-temperature water generated after cooling is often discharged directly, resulting in a large amount of heat energy waste.

[0004] At present, in the process of distilling wine, due to the flow rate and temperature changes of the steam in the wine, it is difficult to ensure the constant temperature of the wine at the outlet using traditional liquid cooling devices, thus affecting the quality of the wine. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a heat recovery system for a winery, which solves the problem that during the current distillation process of wine, the cooled hot water is directly discharged, thereby causing a large amount of heat energy waste, and also solves the problem that the wine outlet temperature is difficult to control.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A heat recovery system for a winery includes a liquor distillation system, wherein the liquor distillation system includes a wine sieve containing fermented mash, and the wine sieve is distilled by high-temperature steam, and the wine steam generated by the distillation is cooled to obtain liquor. The system also includes:

[0008] A high-temperature heat pump system, the high-temperature heat pump system comprising a heat exchanger for exchanging heat between the water source after water treatment in the liquor distillation system and the high-temperature heat pump system, and a high-temperature heat pump host for converting the hot water output by the heat exchanger into high-temperature steam and transporting it to the liquor distillation system for distilling the liquor, and the high-temperature heat pump host is also used to cool the hot water on the water outlet side of the cooler and then transport it to the low-temperature heat pump system;

[0009] A low-temperature heat pump system, which includes several low-temperature heat pump main units for cooling part of the hot water output by the high-temperature heat pump system and transporting it to the liquor distillation system to cool the liquor vapor. The low-temperature heat pump main units are also used to transport part of the hot water after heat exchange to the pipeline between the water outlet of the liquor distillation system and the water inlet of the high-temperature heat pump system. A decoupler is also provided between the several low-temperature heat pump main units and the high-temperature heat pump system to maintain the water temperature difference and hydraulic balance between the water inlet and outlet of the low-temperature heat pump main units.

[0010] Preferably, the liquor distillation system includes a boiler for providing high-temperature steam to distill the liquor, a water tank for supplying water to the boiler and the heat exchanger, a cooler for cooling the liquor vapor generated in the liquor, a wine collecting barrel for collecting the liquor generated by the cooler, and a liquid cooling device connected to the cooler by pipelines with the high-temperature heat pump system and the low-temperature heat pump system.

[0011] Preferably, the high-temperature heat pump main unit includes a high-temperature evaporator, a high-temperature compressor, a high-temperature condenser and a high-temperature expansion valve for receiving hot water on the return water side of the cooler. The water outlet of the high-temperature evaporator is connected to the decoupler, the water inlet of the high-temperature condenser is connected to the water outlet of the refrigeration side of the heat exchanger, and the water outlet of the high-temperature condenser is connected to the wine sieve for distilling the wine sieve.

[0012] Preferably, the low-temperature heat pump main unit includes a low-temperature evaporator, a low-temperature compressor, a low-temperature condenser and a low-temperature expansion valve connected in sequence, several low-temperature evaporators are connected in sequence, several low-temperature condensers are connected in sequence, a regulating valve is connected between the water outlet of the decoupler and the high-temperature evaporator, several low-temperature condensers connected in sequence are used to supply water to the pipeline between the water outlet of the liquor distillation system and the water inlet of the high-temperature heat pump system, several low-temperature evaporators connected in sequence are used to supply water to another water inlet of the decoupler, and the other water outlet of the decoupler is connected to the water inlet pipe of the cooler.

[0013] Compared with the prior art, the present invention provides a winery heat recovery system, which has the following beneficial effects:

[0014] 1. By setting up a high-temperature heat pump system and a low-temperature heat pump system, the waste heat of the liquor distillation system can be recovered, and the excess heat is converted into high-temperature steam of about 125°C after passing through the high-temperature heat pump system, so that it can enter the liquor distillation again to realize the distillation of the liquor, saving and making full use of heat energy.

[0015] 2. The temperature of the collected wine can be effectively adjusted by the regulating valve and low-temperature heat pump system, thereby ensuring the stability of the temperature of the collected wine, thereby ensuring the stability of the taste and quality of the wine and ensuring the quality of the wine produced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 is a schematic diagram of a heat recovery system for a winery according to the present invention;

[0018] Figure 2 It is a schematic diagram of the liquor distillation system of the present invention;

[0019] Figure 3 is a schematic diagram of a high temperature heat pump system of the present invention;

[0020] Figure 4 It is a schematic diagram of the low-temperature heat pump system of the present invention.

[0021] In the figure: 1. Liquor distillation system; 11. Liquor sieve; 12. Boiler; 13. Water tank; 14. Cooler; 15. Wine collection barrel; 16. Liquid cooling device; 2. High-temperature heat pump system; 21. Heat exchanger; 22. High-temperature heat pump host; 221. High-temperature evaporator; 222. High-temperature compressor; 223. High-temperature condenser; 224. High-temperature expansion valve; 3. Low-temperature heat pump system; 31. Low-temperature heat pump host; 311. Low-temperature evaporator; 312. Low-temperature compressor; 313. Low-temperature condenser; 314. Low-temperature expansion valve; 32. Decoupler; 33. Control valve. DETAILED DESCRIPTION

[0022] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0023] To accelerate the promotion of green and low-carbon development, the brewing industry should develop comprehensive utilization technology of brewing resources, carry out "zero-carbon factory" pilot projects, deeply promote the green ecological transformation of the brewing industry, build an ecological brewing system for the wine industry based on ecological protection, establish and improve the carbon emission standards system for the wine industry, and form a complete "zero-carbon" concept and "zero-carbon" development model.

[0024] In order to solve the problem that the separated high-temperature water vapor is often directly discharged during the distillation of the wine sieve, thus causing a large amount of heat energy waste, and the problem that the temperature of the wine outlet cannot be controlled, resulting in unstable wine quality, the present invention provides a winery heat recovery system, including a liquor distillation system 1, the liquor distillation system 1 includes a wine sieve 11 storing fermented mash, and the wine sieve 11 is distilled by high-temperature steam, and the wine vapor generated by the distillation is cooled to obtain liquor, and the system also includes:

[0025] The high-temperature heat pump system 2 includes a heat exchanger 21 for exchanging heat between the water source after water treatment and the high-temperature heat pump system, and a high-temperature heat pump host 22 for converting the hot water output by the heat exchanger 21 into high-temperature steam and transporting it to the liquor distillation system 1 to distill the liquor 11. The high-temperature heat pump host 22 is also used to cool the hot water output by the cooler 14 and then transport it to the low-temperature heat pump system 3;

[0026] The low-temperature heat pump system 3 includes a plurality of low-temperature heat pump main units 31 for cooling part of the hot water output by the high-temperature heat pump system 2 and transporting it to the liquor distillation system 1 to cool the liquor vapor. The low-temperature heat pump main unit 31 is also used to transport part of the hot water after heat exchange to the pipeline between the water outlet of the liquor distillation system 1 and the water inlet of the high-temperature heat pump system 2. A decoupler 32 for maintaining the water temperature difference and hydraulic balance between the water inlet and outlet of the low-temperature heat pump main unit 31 is also provided between the plurality of low-temperature heat pump main units 31 and the high-temperature heat pump system 2.

[0027] To further illustrate the structural composition of the liquor distillation system 1, the liquor distillation system 1 includes a boiler 12 for providing high-temperature steam to distill the liquor sieve 11, a water tank 13 for supplying water to the boiler 12 and the heat exchanger 21, and a cooler 14 for cooling the liquor vapor generated in the liquor sieve 11, a wine collecting barrel 15 for collecting the liquor generated by the cooler 14, and a liquid cooling device 16 connected to the cooler 14 and the high-temperature heat pump system 2 and the low-temperature heat pump system 3 through pipelines.

[0028] To further illustrate the structural composition of the high-temperature heat pump main unit 22, the high-temperature heat pump main unit 22 includes a high-temperature evaporator 221, a high-temperature compressor 222, a high-temperature condenser 223 and a high-temperature expansion valve 224, which are used to receive the water heated by the heat exchanger 21 and are connected in sequence. The high-temperature expansion valve 224 is connected to the other water inlet end of the high-temperature evaporator 221, the water inlet end of the cooling side of the high-temperature condenser 223 is connected to the water outlet end of the cooling side of the heat exchanger 21, and the water outlet end of the cooling side of the high-temperature condenser 223 is connected to the wine elixir 11 for distilling the wine elixir 11.

[0029] To further illustrate the structural composition of the low-temperature heat pump main unit 31, the low-temperature heat pump main unit 31 includes a low-temperature evaporator 311, a low-temperature compressor 312, a low-temperature condenser 313 and a low-temperature expansion valve 314 connected in sequence. Several low-temperature evaporators 311 are connected in sequence, and several low-temperature condensers 313 are connected in sequence. A regulating valve 33 is connected between the decoupler 32 and the water outlet of the high-temperature evaporator 221. The high-temperature evaporator 221 is also used to supply water to several low-temperature evaporators 311 connected in sequence. Several low-temperature condensers 313 connected in sequence are used to supply water to the pipeline between the water outlet of the liquor distillation system 1 and the water inlet of the high-temperature heat pump system 2. Several low-temperature evaporators 311 connected in sequence are used to supply water to another water inlet of the decoupler 32. The other water outlet of the decoupler 32 is connected to the cooler 14 and the liquid cooling device 16.

[0030] When the system is started for the first time, the liquor distillation system 1 is started normally by the boiler 12, and the liquid cooling device 16 inputs cold water to the cooler 14 for cooling. The liquor vapor of 120°C produced in the liquor sieve 11 is cooled by the cooler 14, condensed to form 40°C liquor and collected by the liquor collecting barrel 15. After the liquor vapor of 120°C is produced in the liquor sieve 11, the valve of the liquid cooling device 16 is closed, and the high-temperature heat pump system 2 is switched to match the low-temperature heat pump system 3 for operation. After the cooler 14 initially cools the liquor vapor, 95°C hot water is generated. The 95°C hot water is heat exchanged by the heat exchanger 21 to obtain a water temperature of 85°C and enters the high-temperature evaporator 221. At this time, the high-temperature heat pump system 2 and the low-temperature heat pump system 3 are started at the same time, and enter the high-temperature evaporator 221 driven by the water pump. After evaporation, the temperature is reduced to 75°C and then enters the low-temperature heat pump system 3. At the same time, the water tank 13 supplies water to the heat exchanger 21. After heat exchange, 85°C water is formed and enters the high-temperature condenser 223. After condensation, it finally becomes 12 5℃ steam is sent back to the wine precipitator 11 for use in the white wine distillation system 1. In addition, the 75℃ water at the end of the high-temperature evaporator 221 is divided into two after being adjusted by the regulating valve 33. One part enters the decoupler 32 for heat exchange. After the heat exchange, the final cold water enters the cooler 14 to cool the wine vapor. The hot water after cooling the wine continues to enter the high-temperature heat pump system 2 to form a cycle, and the other part enters several low-temperature condensers 313 in turn. After heat exchange in the low-temperature condenser 313, the water with 85℃ is sucked into the high-temperature heat pump system 2 by the water pump to form a cycle. The flow path on the other side of the decoupler 32 is connected to the low-temperature heat pump evaporator for evaporator heat exchange. The decoupler 32 is connected to the low-temperature evaporator 311, and the circulation heat exchange is driven by a fixed-flow water pump. When the wine precipitator 11 stops running (when heat recovery of high-temperature steam is no longer needed), it switches to the liquid cooling device 16 again, and the high-temperature heat pump system 2 stops the steam supply. After the final cooling is completed, all systems are shut down.

[0031] In addition, the system can adjust the flow distribution through the regulating valve 33 according to the needs (such as the flow change of the wine vapor passing through the cooler 14, etc.), adjust the water temperature entering the cooler 14, and adjust the wine temperature at the wine outlet at any time to ensure the quality of the wine produced. The specific adjustment method is: if the target temperature of the wine at the wine outlet is 40°C, but there are changes in the white wine distillation system 1, the flow and temperature of the wine vapor will change. At this time, the cooling process in the cooler 14 is unstable, and the temperature of the wine outlet will deviate from the target temperature, affecting the quality of the wine. When the temperature of the wine at the wine outlet is 40°C, the temperature of the wine outlet will deviate from the target temperature, affecting the quality of the wine. When the temperature is higher than 40°C, the regulating valve 33 starts to increase the flow from the evaporation side to the decoupler 32, which increases the flow in the cooler 14, increases the cooling capacity, and reduces the temperature of the wine outlet until the target temperature is reached. The low-temperature compressor 312 of the low-temperature heat pump system 3 increases the frequency, which reduces the temperature of the water delivered to the cooler 14 by the low-temperature heat pump system 3. During this process, the inlet water temperature of the high-temperature evaporator 221 in the high-temperature heat pump system 2 will decrease, and the water temperature on the condensation side will increase to supplement the water temperature of the high-temperature evaporator 221, thereby maintaining the normal operation and heat recovery of the high-temperature heat pump system 2.

[0032] When the temperature of the wine at the wine outlet is lower than 40°C, the low-temperature compressor 312 of the low-temperature heat pump system 3 reduces its frequency, thereby increasing the water temperature at the outlet of the decoupler 32 and reducing the cooling capacity of the cooler 14 until the target temperature is reached. The low-temperature compressor 312 preferably adopts a variable frequency compressor, which can control the evaporation and condensation amount, and adjust and ensure that the inlet water temperature of the high-temperature heat pump system 2 is within a safe range. The inlet water temperature safety range of the high-temperature heat pump system 2 is: 70-95°C. When the temperature is higher than the range: the frequency of the low-temperature compressor 312 is reduced, and at the same time, the regulating valve 33 adjusts the flow rate to maintain the temperature of the wine outlet.

[0033] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat recovery system for a winery, comprising a liquor distillation system (1), wherein the liquor distillation system (1) comprises a liquor sieve (11) storing fermented mash, and distilling the liquor sieve (11) by high-temperature steam, and cooling the liquor vapor generated by the distillation to obtain liquor, characterized in that: The system also includes: A high-temperature heat pump system (2), the high-temperature heat pump system (2) comprising a heat exchanger (21) for exchanging heat between a water source after water treatment in a liquor distillation system (1) and the high-temperature heat pump system (2), and a high-temperature heat pump main unit (22) for converting hot water outputted from the heat exchanger (21) into high-temperature steam and transporting the steam to the liquor distillation system (1) to distill liquor (11), the high-temperature heat pump main unit (22) also being used to cool the hot water on the water outlet side of the cooler (14) and transport the hot water to the low-temperature heat pump system (3); A low-temperature heat pump system (3), the low-temperature heat pump system (3) comprising a plurality of low-temperature heat pump main units (31) for cooling part of the hot water outputted from the high-temperature heat pump system (2) and transporting it to the liquor distillation system (1) to cool the liquor vapor; the low-temperature heat pump main unit (31) is also used to transport part of the hot water after heat exchange to a pipeline between the water outlet of the liquor distillation system (1) and the water inlet of the high-temperature heat pump system (2); a decoupler (32) is also provided between the plurality of low-temperature heat pump main units (31) and the high-temperature heat pump system (2) for maintaining the water temperature difference and hydraulic balance between the water inlet and water outlet of the low-temperature heat pump main unit (31).

2. A winery heat recovery system according to claim 1, characterized in that: The liquor distillation system (1) comprises a boiler (12) for providing high-temperature steam to distill a liquor sieve (11), a water tank (13) for supplying water to the boiler (12) and a heat exchanger (21), and a cooler (14) for cooling liquor vapor generated in the liquor sieve (11), a liquor collecting barrel (15) for collecting liquor generated by the cooler (14), and a liquid cooling device (16) connected to the cooler (14) and the high-temperature heat pump system (2) and the low-temperature heat pump system (3) through pipelines.

3. A winery heat recovery system according to claim 1, characterized in that: The high-temperature heat pump main unit (22) includes a high-temperature evaporator (221) for receiving hot water on the return water side of the cooler (14), a high-temperature compressor (222), a high-temperature condenser (223) and a high-temperature expansion valve (224); the water outlet of the high-temperature evaporator (221) is connected to the decoupler (32); the water inlet of the high-temperature condenser (223) is connected to the water outlet of the refrigeration side of the heat exchanger (21); and the water outlet of the high-temperature condenser (223) is connected to the wine sieve (11) for distilling the wine sieve (11).

4. A winery heat recovery system according to claim 1, characterized in that: The low-temperature heat pump main unit (31) comprises a low-temperature evaporator (311), a low-temperature compressor (312), a low-temperature condenser (313) and a low-temperature expansion valve (314) connected in sequence. A plurality of low-temperature evaporators (311) are connected in sequence. A plurality of low-temperature condensers (313) are connected in sequence. A regulating valve (33) is connected between the water outlet of the decoupler (32) and the high-temperature evaporator (221). The plurality of low-temperature condensers (313) connected in sequence are used to supply water to the pipeline between the water outlet of the liquor distillation system (1) and the water inlet of the high-temperature heat pump system (2). The plurality of low-temperature evaporators (311) connected in sequence have another water inlet for supplying water to the decoupler (32). The other water outlet of the decoupler (32) is connected to the water inlet pipeline of the cooler (14).

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