Waste heat recycling system of double-circulation water cooling equipment of winery
By designing a multi-stage heat recovery system in the dual circulation water cooling equipment of the winery, the problem of low heat recovery rate in the existing technology is solved, efficient heat recovery and energy utilization are achieved, and the effect of energy conservation and emission reduction is achieved.
Patent Information
- Application Number
- CN202420805321.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-04-18
AI Technical Summary
The prior art heat recovery of the cooling water of the winery is usually a single circulation water cooling system, with a low heat recovery rate and it is difficult to achieve multi-stage heat recovery, resulting in low comprehensive energy utilization efficiency.
Design a waste heat recovery and utilization system for dual circulation water cooling equipment, including a high-temperature first-level heat exchange system, a medium-temperature second-level heat exchange system and a low-temperature third-level heat exchange system. Multi-stage heat recovery is achieved through components such as heat pumps, boiler water heat exchangers and domestic water heat exchangers.
Through multi-stage heat recovery technology, the recovery and utilization rate of heat in cooling water is significantly improved, the gas consumption in boiler room is reduced, the energy consumption of cooling water is reduced, and the effect of energy saving and emission reduction is achieved.
Smart Images
Figure CN222799754U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a waste heat recovery and utilization system for double-circulation water cooling equipment in a winemaking plant, belonging to the technical field of waste heat recovery of water cooling equipment in winemaking plants. Background Art
[0002] Wine production involves cooling needs, and the cooling system usually uses water as the cooling medium. In current industrial production, the cooling water system usually uses cooling towers to cool down and then recycle. The way to recycle the heat energy contained in the cooling water is relatively simple, and it is difficult to achieve multi-stage heat recovery to improve the comprehensive utilization efficiency of energy.
[0003] The existing technology for heat recovery of cooling water is usually a single-loop water cooling system, with few ways to recover heat from cooling water and a low heat recovery rate. The single heat recovery method does not fully recover and utilize the heat contained in the cooling water, and a large amount of heat needs to be dissipated through the cooling tower, which has high heat dissipation energy consumption, insufficient heat recovery, and does not fully tap the potential for energy saving and carbon reduction.
[0004] That is, there is a need for a double-circulation water cooling device for a winemaking plant, which can perform multi-stage waste heat recovery on cooling water and can recycle and utilize waste heat to the maximum extent, which is beneficial to energy saving. Utility Model Content
[0005] In view of this, the purpose of the utility model is to provide a waste heat recovery system for the double-circulation water cooling equipment of a winery, which can perform multi-stage waste heat recovery on the cooling water and can recycle the waste heat to the maximum extent, which is beneficial to energy saving and can overcome the shortcomings of the existing technology.
[0006] The purpose of this utility model is achieved through the following technical solutions:
[0007] The utility model discloses a waste heat recovery and utilization system of a double-circulation water cooling device in a wine making plant, which comprises a water cooling system composed of a closed cooling tower, a softening water system and a boiler system. A high-temperature cooling water inlet, a high-temperature cooling water outlet and a low-temperature cooling water inlet and outlet are arranged on the closed cooling tower. The high-temperature cooling water inlet is connected to a high-temperature cooling water inlet tank, and the high-temperature cooling water outlet is connected to a high-temperature cooling water return tank. A high-temperature section primary heat exchange system for providing steam for the wine making plant, a medium-temperature section secondary heat exchange system for preheating water for a boiler system, and a low-temperature section tertiary heat exchange system for heating domestic water are arranged between the high-temperature cooling water inlet tank and the high-temperature cooling water return tank.
[0008] The above-mentioned high-temperature section primary heat exchange system includes a heat pump, which is provided with an interface connected to a soft water heat exchanger, a steam pipe connected to the outdoor steam network of the factory area, and a circulating water inlet and outlet. The circulating water inlet and outlet form a circulation with an open cooling tower, and the soft water heat exchanger is connected to a softened water tank of a softened water system.
[0009] The above-mentioned medium-temperature section secondary heat exchange system (6) includes a boiler water heat exchanger (6-1), and the boiler water heat exchanger (6-1) forms a circulation system with a hot water tank (6-3) of the boiler system (2) through a circulation pipe. After heat exchange, the circulation pipe passes through a boiler blast air preheater (6-2).
[0010] The above-mentioned low-temperature section three-stage heat exchange system includes a domestic water heat exchanger and a domestic water tank that forms a circulation with the domestic water heat exchanger. A domestic water supply pipe and a liquid level meter are provided on the domestic water tank.
[0011] As mentioned above, stop valves, water pumps, pressure gauge sensors, water meters, temperature sensors and flow meters are installed on the pipelines of the water cooling system, the high-temperature stage primary heat exchange system, the medium-temperature stage secondary heat exchange system and the low-temperature stage tertiary heat exchange system.
[0012] As mentioned above, an overflow box is provided between the high-temperature cooling water inlet and the high-temperature cooling water outlet.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. The utility model is provided with a high-temperature first-stage heat exchange system for providing steam for the winery, a medium-temperature second-stage heat exchange system for preheating water for the boiler system, and a low-temperature third-stage heat exchange system for heating domestic water between the high-temperature cooling water inlet tank and the high-temperature cooling water return tank. This scheme is aimed at the double-circulation cooling water system of the winery. The high-temperature cooling water outlet temperature is about 85℃ to 90℃, and the return water, that is, the inlet cooler temperature is about 60℃; the low-temperature cooling water outlet temperature is about 40℃ to 45℃, and the return water, that is, the inlet cooler temperature is about 33℃ to 35℃. This technology uses a three-stage heat recovery method to recover the waste heat of the high-temperature cooling water according to the high-temperature cooling water temperature and the heat demand of the winery area, thereby realizing the full recovery and utilization of heat.
[0015] 2. The high-temperature stage one heat exchange system includes a heat pump, which is provided with an interface connected to the soft water heat exchanger, a steam pipe connected to the outdoor steam network of the plant area, and a circulating water inlet and outlet. The circulating water inlet and outlet form a cycle with the open cooling tower, and the soft water heat exchanger is connected to the softened water tank of the softened water system. The heat recovery principle of the high-temperature stage one heat exchange system is: the heat pump absorbs the heat of the high-temperature cooling water to heat the soft water for steam production to above 120°C, and the soft water above 120°C passes through the flash tank of the heat pump to generate saturated steam above 0.2MPa. By recovering part of the steam used for production through heat recovery, the steam supply in the boiler room can be reduced, thereby reducing gas consumption and achieving energy conservation and emission reduction.
[0016] 3. The medium-temperature section secondary heat exchange system (6) includes a boiler water heat exchanger (6-1), which forms a circulation system with the hot water tank (6-3) of the boiler system (2) through a circulation pipe. After heat exchange, the circulation pipe passes through the boiler blast air preheater (6-2). The medium-temperature section secondary heat exchange system can increase the boiler water by about 25°C through this stage of heat exchange, thereby increasing the water temperature entering the boiler room deaerator and reducing the amount of steam consumed by the boiler room deaerator. In addition, the hot water after heat recovery at this stage flows through the boiler blast air preheater, and the recovered heat can be used to increase the air temperature entering the boiler burner, thereby reducing gas consumption and achieving energy conservation and emission reduction.
[0017] 4. The low-temperature three-stage heat exchange system includes a domestic water heat exchanger and a domestic water tank that forms a cycle with the domestic water heat exchanger. A domestic water supply pipe and a liquid level gauge are provided on the domestic water tank. The low-temperature three-stage heat exchange system uses a water pump and a domestic water heat exchanger to heat the domestic hot water with the high-temperature cooling water for multiple cycles, and then transports the domestic hot water to each hot water point. The wine-making area is mostly heated by steam. The use of heat recovery to heat domestic hot water can reduce the steam consumption outside of production, thereby reducing gas consumption and achieving energy conservation and emission reduction. 5. Through the above three-stage heat recovery and utilization technology, the heat recovery rate in cooling water can be further improved, the gas consumption in the boiler room can be reduced, and unnecessary cooling water cooling energy consumption can be reduced. The cooling water heat recovery technology is highly consistent with the national policy requirements for green and low-carbon, and has obvious practical effects on achieving energy conservation and emission reduction in related industrial production. At the same time, it can reduce the heat emitted into the atmosphere, which is of certain significance to reducing the heat island effect in industrial areas.
[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings, in which:
[0020] Figure 1 It is a schematic diagram of the connection structure of the utility model.
[0021] Figure 2 It is a schematic diagram of the connection structure of the existing water cooling system.
[0022] Figure 3 This is a schematic diagram of the connection structure of the utility model after adding a high-temperature stage heat exchange system to the existing water cooling system.
[0023] Figure 4 This is a schematic diagram of the connection structure of the utility model after adding a medium-temperature section secondary heat exchange system to the existing water cooling system.
[0024] Figure 5 It is a schematic diagram of the connection structure of the utility model after the three-stage heat exchange system in the low-temperature section of the existing water cooling system.
[0025] Among them, closed cooling tower 1; boiler system 2; high-temperature cooling water inlet tank 3; high-temperature cooling water return tank 4; high-temperature section primary heat exchange system 5; heat pump 5-1; soft water heat exchanger 5-2; steam pipe 5-3; open cooling tower 5-4; medium-temperature section secondary heat exchange system 6; boiler water heat exchanger 6-1; boiler blast air preheater 6-2; hot water tank 6-3; low-temperature section tertiary heat exchange system 7; domestic water heat exchanger 7-1; domestic water tank 7-2; softened water tank 8; overflow tank 9. DETAILED DESCRIPTION
[0026] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, rather than for limiting the protection scope of the present invention.
[0027] like Figure 1-Figure 4 As shown, the utility model discloses a waste heat recovery and utilization system of a double-circulation water cooling equipment in a wine making plant, which includes a water cooling system composed of a closed cooling tower 1, a softening water system and a boiler system 2. A high-temperature cooling water inlet, a high-temperature cooling water outlet and a low-temperature cooling water inlet and outlet are provided on the closed cooling tower 1. The high-temperature cooling water inlet is connected to a high-temperature cooling water inlet tank 3, and the high-temperature cooling water outlet is connected to a high-temperature cooling water return tank 4. An overflow tank 9 is provided between the high-temperature cooling water inlet and the high-temperature cooling water outlet. A high-temperature section primary heat exchange system 5 for providing steam for the wine making plant, a medium-temperature section secondary heat exchange system 6 for preheating water for the boiler system 2, and a low-temperature section tertiary heat exchange system 7 for heating domestic water are provided between the high-temperature cooling water inlet tank 3 and the high-temperature cooling water return tank 4. The structural schematic diagram is shown in FIG. Figure 3 As shown in the figure, this scheme is aimed at the double-circulation cooling water system of the winemaking plant. The high-temperature cooling water outlet temperature is about 85℃ to 90℃, and the return water, that is, the inlet cooler temperature is about 60℃; the low-temperature cooling water outlet temperature is about 40℃ to 45℃, and the return water, that is, the inlet cooler temperature is about 33℃ to 35℃. This technology uses a three-stage heat recovery method to recover the waste heat of the high-temperature cooling water based on the high-temperature cooling water temperature and the heat demand of the winemaking plant area, thereby realizing full recovery and utilization of heat.
[0028] Furthermore, the high-temperature stage primary heat exchange system 5 includes a heat pump 5-1, which is provided with an interface connected to a soft water heat exchanger 5-2, a steam pipe 5-3 connected to the outdoor steam network of the plant area, and a circulating water inlet and outlet. The circulating water inlet and outlet form a cycle with an open cooling tower 5-4. The soft water heat exchanger 5-2 is connected to a softened water tank 8 of the softened water system. The structural diagram is shown in FIG. Figure 3 As shown, the heat recovery principle of the high-temperature stage primary heat exchange system 5 is: the heat pump 5-1 absorbs the heat of the high-temperature cooling water to heat the soft water for steam production to above 120°C, and the soft water above 120°C passes through the flash tank of the heat pump 5-1 to generate saturated steam above 0.2MPa. By recovering part of the steam used for production through heat recovery, the steam supply of the boiler room can be reduced, thereby reducing gas consumption and achieving energy conservation and emission reduction.
[0029] Furthermore, the medium temperature section secondary heat exchange system 6 includes a boiler water heat exchanger 6-1, which forms a circulation system with a hot water tank 6-3 of the boiler system 2 through a circulation pipe. After heat exchange, the circulation pipe passes through a boiler blast air preheater 6-2. The structural diagram thereof is shown in FIG. Figure 4 As shown, the medium-temperature stage secondary heat exchange system 6 can increase the boiler water by about 25°C through this stage of heat exchange, thereby increasing the water temperature entering the boiler room deaerator and reducing the amount of steam consumed by the boiler room deaerator. At the same time, the hot water after heat recovery at this stage flows through the boiler blast air preheater 6-2, and the recovered heat can be used to increase the air temperature entering the boiler burner, thereby reducing gas consumption and achieving energy conservation and emission reduction.
[0030] Furthermore, the low temperature stage three-stage heat exchange system 7 includes a domestic water heat exchanger 7-1 and a domestic water tank 7-2 which forms a cycle with the domestic water heat exchanger 7-1. A domestic water supply pipe and a liquid level gauge are provided on the domestic water tank 7-2. The schematic diagram of the structure is shown in FIG. Figure 5 As shown, the low temperature section three-stage heat exchange system 7 uses a water pump and a domestic water heat exchanger 7-1 to heat the domestic hot water with the high temperature cooling water in a multiple circulation cycle, and then transport the domestic hot water to each hot water point. The wine making area is mostly heated by steam. The use of heat recovery to heat domestic hot water can reduce the steam consumption outside of production, thereby reducing gas consumption and achieving energy conservation and emission reduction.
[0031] At the same time, stop valves, water pumps, pressure gauge sensors, water meters, temperature sensors and flow meters are installed on the pipelines of the water cooling system, the high-temperature section primary heat exchange system 5, the medium-temperature section secondary heat exchange system 6 and the low-temperature section tertiary heat exchange system 7. Through these devices, various parameters of the high-temperature section primary heat exchange system 5, the medium-temperature section secondary heat exchange system 6 and the low-temperature section tertiary heat exchange system 7 can be controlled. When the temperature reaches the requirement, the circulation can be stopped.
[0032] The above is only a preferred embodiment of the utility model, and does not limit the confidentiality of the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still falls within the scope of the technical solution of the utility model.
Claims
1. A waste heat recovery and utilization system of a double-circulation water cooling device in a winemaking plant, comprising a water cooling system consisting of a closed cooling tower (1), a softening water system and a boiler system (2), wherein a high-temperature cooling water inlet, a high-temperature cooling water outlet and a low-temperature cooling water inlet and outlet are provided on the closed cooling tower (1), wherein the high-temperature cooling water inlet is connected to a high-temperature cooling water inlet tank (3), and the high-temperature cooling water outlet is connected to a high-temperature cooling water return tank (4), and wherein: A high-temperature first-stage heat exchange system (5) for providing steam for the winery, a medium-temperature second-stage heat exchange system (6) for preheating water for the boiler system (2), and a low-temperature third-stage heat exchange system (7) for heating domestic water are provided between the high-temperature cooling water inlet tank (3) and the high-temperature cooling water return tank (4).
2. The waste heat recovery and utilization system of the double-circulation water cooling equipment of the winemaking plant according to claim 1 is characterized in that: The high-temperature section primary heat exchange system (5) comprises a heat pump (5-1), and the heat pump (5-1) is provided with an interface connected to a soft water heat exchanger (5-2), a steam pipe (5-3) connected to an outdoor steam network in the plant area, and a circulating water inlet and outlet, the circulating water inlet and outlet forming a circulation with an open cooling tower (5-4), and the soft water heat exchanger (5-2) is connected to a softened water tank (8) of a softened water system.
3. The waste heat recovery and utilization system of the double-circulation water cooling equipment of the winemaking plant according to claim 1 is characterized in that: The medium-temperature section secondary heat exchange system (6) comprises a boiler water heat exchanger (6-1), wherein the boiler water heat exchanger (6-1) forms a circulation system with a hot water tank (6-3) of a boiler system (2) via a circulation pipe, and the circulation pipe passes through a boiler blast air preheater (6-2) after heat exchange.
4. The waste heat recovery and utilization system of the double-circulation water cooling equipment of the winemaking plant according to claim 1 is characterized in that: The low-temperature section three-stage heat exchange system (7) comprises a domestic water heat exchanger (7-1) and a domestic water tank (7-2) forming a circulation with the domestic water heat exchanger (7-1), and a domestic water supply pipe and a liquid level gauge are provided on the domestic water tank (7-2).
5. The waste heat recovery and utilization system of the double-circulation water cooling equipment of the winemaking plant according to claim 1 is characterized in that: Stop valves, water pumps, pressure gauge sensors, water meters, temperature sensors and flow meters are provided on the pipelines of the water cooling system, the high-temperature section primary heat exchange system (5), the medium-temperature section secondary heat exchange system (6) and the low-temperature section tertiary heat exchange system (7).
6. The waste heat recovery and utilization system of the double-circulation water cooling equipment of the winemaking plant according to any one of claims 1 to 5, characterized in that: An overflow box (9) is provided between the high-temperature cooling water inlet and the high-temperature cooling water outlet.