Heat recycling system for ammonia exhaust of ammonia refrigerator
By designing a heat recovery and utilization system for ammonia exhaust, a plate heat exchanger and a high-temperature heat pump are used to transfer the heat of ammonia exhaust to the water in the bottle washing machine. This solves the problems of high energy consumption for cooling high-temperature ammonia in ammonia refrigeration units and high steam costs for cleaning beer bottles, achieving efficient heat recovery and reduced energy consumption.
Patent Information
- Application Number
- CN202520290334.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-24
AI Technical Summary
In existing technologies, the high-temperature and high-pressure ammonia gas discharged from the ammonia refrigeration machine consumes a lot of cooling water and electricity, and the heat carried by the ammonia gas is not effectively utilized. The beer bottle cleaning process requires the consumption of high-cost steam.
Design a heat recovery system for ammonia exhaust gas. The system uses a plate heat exchanger and a high-temperature heat pump to transfer the heat from the ammonia exhaust gas to the water in the bottle washing machine. The heat is recovered using heat pump technology, and the water is heated in the bottle washing machine to replace steam heating.
It effectively reduces energy costs, decreases cooling water and electricity consumption, and reduces steam usage in the beer bottle cleaning process, achieving efficient heat recovery and utilization.
Smart Images
Figure CN223896310U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat recovery technology, specifically a heat recovery and utilization system for ammonia exhaust gas from an ammonia refrigeration machine. Background Technology
[0002] The beer production process requires a large amount of cooling energy for deoxygenated water cooling, ice water preparation, and fermentation tank cooling. This cooling energy is currently mainly provided by ammonia refrigeration units. After the refrigeration is completed, the high-temperature and high-pressure ammonia gas discharged from the ammonia refrigeration unit needs to be cooled to about 30°C before returning to the ammonia refrigeration system for circulation. The cooling method for high-temperature and high-pressure ammonia gas is to use water evaporation and forced air circulation to remove the condensation heat. Therefore, a large amount of cooling water is required, and the fans also consume a lot of electricity. The heat carried by the ammonia gas is wasted.
[0003] In addition, the process temperature for cleaning beer bottles is 85±3℃. Currently, steam is used for cleaning, and the steam is either purchased externally or generated by the factory boiler, resulting in high costs.
[0004] Utilizing the heat carried by ammonia in the beer bottle cleaning process is an important area for technological improvement for enterprises to reduce costs and achieve energy conservation and emission reduction. Utility Model Content
[0005] This invention provides a heat recovery and utilization system for ammonia exhaust gas from an ammonia refrigeration unit. The system recovers the heat from the high-temperature ammonia gas, and after passing through a heat exchanger, heats the water in the bottle washing machine, thereby reducing the amount of steam used at the bottle washing station.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat recovery and utilization control system for ammonia exhaust, comprising a plate heat exchanger I, a water tank, a high-temperature heat pump, a plate heat exchanger II, and a bottle washing machine;
[0007] The plate heat exchanger is provided with a hot inlet, a hot outlet, a cold inlet, and a cold outlet. The hot inlet and hot outlet are connected to the ammonia exhaust header. The cold inlet is connected to the bottom of the water tank. A circulation pump is provided between the cold inlet and the water tank. The cold outlet is connected to the top of the water tank.
[0008] The high-temperature heat pump has a heat pump hot inlet and a heat pump hot outlet on the evaporator side. The heat pump hot inlet is connected to the top of the water tank, and the heat pump hot outlet is connected to the bottom of the water tank. A second circulation pump is installed between the heat pump hot outlet and the water tank. The high-temperature heat pump has a heat pump cold inlet and a heat pump cold outlet on the condenser side.
[0009] The plate heat exchanger 2 is provided with a heat inlet, a heat outlet, a cold inlet, and a cold outlet. The heat inlet is connected to the cold outlet of the heat pump. A circulation pump 3 is provided between the heat inlet and the heat outlet. The heat outlet is connected to the cold inlet of the heat pump.
[0010] The inlet of the bottle washing machine is connected to the cold outlet of the second plate heat exchanger, and the outlet of the bottle washing machine is connected to the cold inlet of the second plate heat exchanger. A circulation pump is installed between the outlet of the bottle washing machine and the cold inlet of the second plate heat exchanger.
[0011] Furthermore, a filter is installed between the water outlet of the bottle washing machine and the circulating pump, and the filter is a backwashing filter.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. The heat recovery and utilization control system for ammonia exhaust disclosed in this utility model adopts heat pump technology to recover and utilize the heat of high-temperature ammonia gas in the refrigeration unit. The recovered heat is applied in the beer bottle cleaning process, effectively reducing energy consumption costs.
[0014] 2. The heat recovery and utilization control system for ammonia exhaust disclosed in this utility model addresses the issue that the alkaline tank water contains impurities such as pulp during bottle washing, which can easily clog the plate heat exchanger. To prevent clogging of the plate heat exchanger, an automatic backwashing filter is installed between the outlet of the bottle washing machine and the cold inlet of the plate heat exchanger, which can effectively filter out impurities. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the principle of this utility model.
[0016] Explanation of key component symbols:
[0017] 10-Plate heat exchanger one, 20-Water tank, 21-Circulation pump one, 30-High temperature heat pump, 31-Circulation pump two, 40-Plate heat exchanger two, 41-Circulation pump three, 50-Bottle washing machine, 51-Circulation pump four, 52-Filter, 60-Ammonia exhaust header. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Please see Figure 1This utility model provides a heat recovery and utilization system for ammonia exhaust gas from an ammonia refrigeration machine, including a plate heat exchanger 10, a water tank 20, a high-temperature heat pump 30, a plate heat exchanger 40, and a bottle washing machine 50.
[0020] The plate heat exchanger 10 is equipped with a hot inlet, a hot outlet, a cold inlet, and a cold outlet. The hot inlet and hot outlet are connected to the ammonia exhaust header 60. The cold inlet is connected to the bottom of the water tank 20. A circulation pump 21 is installed between the cold inlet and the water tank 20. The cold outlet is connected to the top of the water tank 20.
[0021] The high-temperature heat pump 30 has a heat pump hot inlet and a heat pump hot outlet on the evaporator side. The heat pump hot inlet is connected to the top of the water tank, and the heat pump hot outlet is connected to the bottom of the water tank. A second circulation pump is installed between the heat pump hot outlet and the water tank. The high-temperature heat pump has a heat pump cold inlet and a heat pump cold outlet on the condenser side.
[0022] Plate heat exchanger 2 40 is provided with a heat inlet, a heat outlet, a cold inlet, and a cold outlet. The heat inlet of plate heat exchanger 2 is connected to the cold outlet of the heat pump. A circulation pump 3 41 is provided between the heat inlet of plate heat exchanger 2 and the cold outlet of the heat pump. The heat outlet of plate heat exchanger 2 is connected to the cold inlet of the heat pump.
[0023] The inlet of the bottle washing machine 50 is connected to the outlet of the second plate heat exchanger, and the outlet of the bottle washing machine 50 is connected to the inlet of the second plate heat exchanger. A circulation pump 4 51 is installed between the outlet of the bottle washing machine 50 and the inlet of the second plate heat exchanger.
[0024] As a preferred embodiment, a filter 52 is provided between the outlet of the bottle washing machine 50 and the circulating pump 51. In this embodiment, the filter 52 is a backwashing filter.
[0025] The working principle of this utility model is as follows:
[0026] The high-temperature ammonia gas in the ammonia exhaust header 60 transfers heat to the evaporator side of the high-temperature heat pump 30 via the plate heat exchanger 10 and the water tank 20, thereby cooling the high-temperature ammonia gas and heating the evaporator side of the high-temperature heat pump 30.
[0027] The high-temperature water on the condenser side of the high-temperature heat pump 30 transfers heat to the bottle washing machine 50 via the plate heat exchanger 40, raising the temperature of the water in the bottle washing machine 50. The filter 52 intercepts impurities in the bottle washing machine 50 and backwashes it periodically.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A heat recovery and utilization system for ammonia exhaust gas from an ammonia refrigeration unit, characterized in that: Includes plate heat exchanger 1, water tank, high-temperature heat pump, plate heat exchanger 2, and bottle washing machine; The plate heat exchanger is provided with a hot inlet, a hot outlet, a cold inlet, and a cold outlet. The hot inlet and hot outlet are connected to the ammonia exhaust header. The cold inlet is connected to the bottom of the water tank. A circulation pump is provided between the cold inlet and the water tank. The cold outlet is connected to the top of the water tank. The high-temperature heat pump has a heat pump hot inlet and a heat pump hot outlet on the evaporator side. The heat pump hot inlet is connected to the top of the water tank, and the heat pump hot outlet is connected to the bottom of the water tank. A second circulation pump is installed between the heat pump hot outlet and the water tank. The high-temperature heat pump has a heat pump cold inlet and a heat pump cold outlet on the condenser side. The plate heat exchanger 2 is provided with a heat inlet, a heat outlet, a cold inlet, and a cold outlet. The heat inlet is connected to the cold outlet of the heat pump. A circulation pump 3 is provided between the heat inlet and the heat outlet. The heat outlet is connected to the cold inlet of the heat pump. The inlet of the bottle washing machine is connected to the cold outlet of the second plate heat exchanger, and the outlet of the bottle washing machine is connected to the cold inlet of the second plate heat exchanger. A circulation pump is installed between the outlet of the bottle washing machine and the cold inlet of the second plate heat exchanger.
2. The heat recovery and utilization system for ammonia exhaust gas from an ammonia refrigeration unit according to claim 1, characterized in that: A filter is installed between the outlet of the bottle washing machine and the circulating pump 4. The filter is a backwashing filter.