CN112944750A - Energy-saving refrigerant purification system - Google Patents
Energy-saving refrigerant purification system Download PDFInfo
- Publication number
- CN112944750A CN112944750A CN202110136248.0A CN202110136248A CN112944750A CN 112944750 A CN112944750 A CN 112944750A CN 202110136248 A CN202110136248 A CN 202110136248A CN 112944750 A CN112944750 A CN 112944750A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- refrigerant
- hot water
- purification system
- condenser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/04—Heat pumps of the sorption type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention belongs to the technical field of refrigerant purification, and particularly discloses an energy-saving refrigerant purification system which comprises a first-class absorption heat pump heating system and a main purification system. The waste heat resources in industrial wastewater and waste gas, river water or underground water in a factory can be fully utilized to obtain medium-temperature hot water to heat and fractionate the refrigerant, so that a large amount of energy consumption is saved, and the operation cost is reduced; by adopting a distillation heating mode driven by industrial waste heat, the purification and regeneration rate of the refrigerant can be obviously improved while energy is saved; the oil-free compressor special for recovering the refrigerant is adopted, and various refrigerants are universal; by adopting a three-stage drying and filtering process, impurities, moisture and acidic substances contained in the polluted refrigerant are highly purified and separated, and the regenerated refrigerant can reach the standard of a new refrigerant; compared with the traditional process in which an oil separator is used, the distillation process is adopted to separate the lubricating oil, so that the separation effect is better, and residual moisture and impurities can be separated while the smooth oil is separated.
Description
Technical Field
The invention relates to the technical field of refrigerant purification, in particular to an energy-saving refrigerant purification system.
Background
The refrigerant used in the production experiment and the engineering maintenance of the refrigeration air-conditioning plant and the fluorine chemical plant is polluted, the oil content, the water content, the mechanical impurities and the like exceed the standard content and cannot be used continuously, the waste refrigerant is generally stored in a refrigerant tank, and the purification and the regeneration are carried out according to the laws and regulations. However, the existing refrigerant purification and regeneration equipment is complex in structure, the gasification energy consumption of the liquid refrigerant before entering the compressor is large, the purification rate of the equipment and the overall energy consumption are incompatible, and large and medium-sized refrigerant purification systems have large equipment and operation capital investment, so that some enterprises can directly discharge the polluted refrigerant into the atmosphere, and resource waste and environmental pollution are caused. In summary, how to reduce the energy consumption of the refrigerant purification system and reduce the operation cost of the refrigerant purification and regeneration system is a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide an energy-saving refrigerant purification system which is suitable for application scenes with large refrigerant purification and regeneration requirements, such as refrigeration air-conditioning plants, fluorination plants and the like. The invention aims to reduce the energy consumption of a refrigerant purification system in a factory, improve the purification rate of equipment, reduce the operation cost of the refrigerant purification and regeneration system and improve the economic and environmental protection benefits of enterprises.
In order to achieve the purpose, the invention provides the following technical scheme: an energy-saving refrigerant purification system comprises a first-class absorption heat pump heating system and a main purification system;
the first-class absorption heat pump heating system comprises a first heat exchanger, a first circulating pump, a second circulating pump, a third circulating pump, an absorber, a condenser, an expansion valve, an evaporator, a generator, a three-way valve, a hot water outlet pipeline, a heat exchange pipeline and a hot water inlet pipeline; the condenser and the generator are integrated in one shell, and the absorber and the evaporator are integrated in the other shell; the generator, the first heat exchanger and the absorber are sequentially communicated through a pipeline, and the absorber, the first circulating pump, the first heat exchanger and the generator are sequentially communicated through a pipeline; the condenser is communicated with the evaporator through a pipeline, and an expansion valve is arranged on the pipeline; the third circulating pump is connected with the upper end and the lower end of the evaporator in series through a pipeline to form a circulating loop; the three-way valve and the second circulating pump are sequentially connected in series with a hot water inlet pipeline, the hot water inlet pipeline sequentially passes through the absorber and the condenser and then is connected with a hot water outlet pipeline, the hot water outlet pipeline is detachably connected with the inlet of the heat exchange pipeline through a connector A1, and the hot water inlet pipeline is detachably connected with the outlet of the heat exchange pipeline through a connector A2;
the main purification system comprises a distillation chamber, an oil storage tank, a liquid storage tank, a first stop valve, an electromagnetic valve, a first drying filter, a second heat exchanger, a condenser, an electronic expansion valve, a second drying filter, a recovery tank and a compressor; the liquid storage tank, the first drying filter, the second heat exchanger and the distillation chamber are sequentially communicated through pipelines, and a first stop valve and an electromagnetic valve are installed on the pipeline connecting the liquid storage tank and the first drying filter; the improved vacuum distillation device is characterized in that a liquid level controller is arranged on the side wall surface of the distillation chamber, the heat exchange pipeline is fixed in the distillation chamber, the inlet and the outlet of the heat exchange pipeline are located on the side wall surface of the distillation chamber, a temperature sensor is arranged at the middle height position of the side wall surface of the distillation chamber, a liquid viewing mirror is arranged at the lowest part of the side wall surface of the distillation chamber, a filter screen and a pressure sensor are arranged at the top end of the inner part of the distillation chamber, the electromagnetic valve, the liquid level controller and the pressure sensor are electrically connected through a relay, the outlet at the bottom of the distillation chamber is communicated with an oil storage tank through a pipeline, a fourth stop valve is connected between the distillation chamber and the oil storage tank in series, the distillation chamber, the compressor, the second heat exchanger; a low pressure meter and a high pressure meter are respectively arranged at the air inlet and the air outlet of the compressor, and a high-low pressure controller is arranged between the high pressure meter and the low pressure meter; and a second stop valve is connected in series between the condenser and the electronic expansion valve, and a third stop valve is connected in series between the second drying filter and the recovery tank.
Preferably, the heating heat source of the generator is selected from medium-pressure steam, high-temperature hot water or flue gas of a factory, and the low-temperature heat source of the evaporator is selected from industrial wastewater, factory cooling water, river water or underground hot spring water at the temperature of 30-50 ℃.
Preferably, the high position and the low position of the detection height of the liquid level controller are respectively set to be correspondingly consistent with the height of an inlet and an outlet of the heat exchange pipeline 35, the outlet of the heat exchange pipeline is positioned at the lowest part of the side wall surface of the distillation chamber, and the inlet is positioned at the 4/5 position of the vertical height of the side wall surface of the distillation chamber.
Preferably, the compressor is an oil-free lubrication type compressor.
Preferably, the filter screen is a stainless steel filter screen.
Preferably, the drying agent in the first drying filter and the second drying filter is selected from molecular sieve, silica gel, activated alumina, activated carbon and any mixture thereof.
Preferably, the first dry filter and the second dry filter are filled with materials such as ceramics, glass fibers, resins and any mixture thereof, and have the deacidification function.
Preferably, the hot water outlet pipeline and the hot water inlet pipeline are detachably connected with the inlet and the outlet of the heat exchange pipeline through flanges respectively, or are directly connected through thread matching.
Preferably, the first-type absorption heat pump heating system selects a Li-Br solution working medium pair, wherein water is a refrigerant, and lithium bromide is an absorbent, and also can select other novel working medium pairs with excellent physical and chemical properties.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention can fully utilize the industrial wastewater and waste gas in a factory, river water or waste heat resources in underground water to obtain medium-temperature hot water to heat and fractionate the refrigerant, saves a large amount of energy consumption compared with the traditional electric heating mode, and reduces the operation cost of a refrigerant purification and regeneration system.
2. By adopting the distillation heating mode driven by industrial waste heat, the purification and regeneration rate of the refrigerant can be obviously improved while the energy is saved.
3. The oil-free compressor special for refrigerant recovery is adopted, various refrigerants are commonly used, and refrigerants such as R22, R134a, R410a and R407c can be recovered.
4. By adopting a three-stage drying and filtering process, impurities, moisture and acidic substances contained in the polluted refrigerant are highly purified and separated, and the regenerated refrigerant can reach the standard of a new refrigerant.
5. Compared with the traditional process in which an oil separator is used, the distillation process is adopted to separate the lubricating oil, so that the separation effect is better, and residual moisture and impurities can be separated while the smooth oil is separated.
Drawings
Fig. 1 is a schematic view of the overall connection structure of the present invention.
In the figure: 1-high-low pressure controller, 2-first heat exchanger, 3-first circulation pump, 4-second circulation pump, 5-third circulation pump, 6-absorber, 7-condenser, 8-expansion valve, 9-evaporator, 10-generator, 11-three-way valve, 12-liquid level controller, 13-distillation chamber, 14-sight glass, 15-temperature sensor, 16-filter screen, 17-pressure sensor, 18-low pressure gauge, 19-fourth stop valve, 20-oil storage tank, 21-liquid storage tank, 22-first stop valve, 23-solenoid valve, 24-first dry filter, 25-second heat exchanger, 26-high pressure gauge, 27-condenser, 28-second stop valve, 29-electronic expansion valve, 30-second drier-filter, 31-third stop valve, 32-recovery tank, 33-compressor, 34-hot water outlet pipe, 35-heat exchange pipe, 36-hot water inlet pipe, a1, a 2-interface.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, the present invention provides a technical solution: an energy-saving refrigerant purification system comprises a first-class absorption heat pump heating system and a main purification system;
the first-class absorption heat pump heating system comprises a first heat exchanger 2, a first circulating pump 3, a second circulating pump 4, a third circulating pump 5, an absorber 6, a condenser 7, an expansion valve 8, an evaporator 9, a generator 10, a three-way valve 11, a hot water outlet pipeline 34, a heat exchange pipeline 35 and a hot water inlet pipeline 36; the condenser 7 and the generator 10 are integrated in one housing, and the absorber 6 and the evaporator 9 are integrated in the other housing; the generator 10, the first heat exchanger 2 and the absorber 6 are sequentially communicated through a pipeline, and the absorber 6, the first circulating pump 3, the first heat exchanger 2 and the generator 10 are sequentially communicated through a pipeline; the condenser 7 is communicated with the evaporator 9 through a pipeline, and an expansion valve 8 is arranged on the pipeline; the third circulating pump 5 is connected with the upper end and the lower end of the evaporator 9 in series through pipelines to form a circulating loop; the three-way valve 11 and the second circulating pump 4 are sequentially connected in series to a hot water inlet pipeline 36, the hot water inlet pipeline 36 sequentially passes through an absorber 6 and a condenser 7 and then is connected to a hot water outlet pipeline 34, the hot water outlet pipeline 34 is detachably connected with an inlet of a heat exchange pipeline 35 through a connector A1, and the hot water inlet pipeline 36 is detachably connected with an outlet of the heat exchange pipeline 35 through a connector A2;
the main purification system comprises a distillation chamber 13, an oil storage tank 20, a liquid storage tank 21, a first stop valve 22, an electromagnetic valve 23, a first drying filter 24, a second heat exchanger 25, a condenser 27, an electronic expansion valve 29, a second drying filter 30, a recovery tank 32 and a compressor 33; the liquid storage tank 21, the first drying filter 24, the second heat exchanger 25 and the distillation chamber 13 are sequentially communicated through pipelines, and a first stop valve 22 and an electromagnetic valve 23 are installed on the pipeline connecting the liquid storage tank 21 and the first drying filter 24; a liquid level controller 12 is arranged on the side wall surface of the distillation chamber 13, the heat exchange pipeline 35 is fixed in the distillation chamber 13, the inlet and the outlet of the heat exchange pipeline are positioned on the side wall surface of the distillation chamber 13, a temperature sensor 15 is arranged at the middle height position of the side wall surface of the distillation chamber 13, a liquid viewing mirror 14 is arranged at the lowest part of the side wall surface of the distillation chamber 13, a filter screen 16 and a pressure sensor 17 are arranged at the top end inside the distillation chamber 13, the electromagnetic valve 23 is electrically connected with the liquid level controller 12 and the pressure sensor 17 through a relay, the bottom outlet of the distillation chamber 13 is communicated with an oil storage tank 21 through a pipeline, a fourth stop valve 19 is connected between the distillation chamber 13 and the oil storage tank 21 in series, the distillation chamber 13, the compressor 33, the second heat exchanger 25, the condenser 27, the second drying filter 30 and the recovery tank 32 are communicated in sequence through pipelines, an electronic expansion valve 29 is arranged on a pipeline connecting the condenser 27 and the second dry filter 30; a low pressure meter 18 and a high pressure meter 26 are respectively arranged at the air inlet and the air outlet of the compressor 33, and a high-low pressure controller 1 is arranged between the high pressure meter 26 and the low pressure meter 18; a second stop valve 28 is connected in series between the condenser 27 and the electronic expansion valve 29, and a third stop valve 31 is connected in series between the second dry filter 30 and the recovery tank 32.
Preferably, the heating heat source of the generator 10 is selected from medium-pressure steam, high-temperature hot water or flue gas of a factory, and the low-temperature heat source of the evaporator 9 is selected from industrial wastewater, factory cooling water, river water or underground hot spring water at the temperature of 30-50 ℃.
Preferably, the high position and the low position of the height detected by the liquid level controller 12 are respectively set to be correspondingly consistent with the height of the inlet and the outlet of the heat exchange pipe 35, the outlet of the heat exchange pipe 35 is located at the lowest position of the side wall surface of the distillation chamber 13, and the inlet is located at the position 4/5 of the vertical height of the side wall surface of the distillation chamber 13.
Preferably, the compressor 33 in the above embodiment is an oil-free lubrication type compressor.
Preferably, the filter screen 16 in the above embodiment is a stainless steel filter screen.
Preferably, the drying agent in the first drying filter 24 and the second drying filter 30 in the above embodiments is selected from molecular sieve, silica gel, activated alumina, activated carbon, and any mixture thereof.
Preferably, in the above embodiment, the first dry filter 24 and the second dry filter 30 are filled with materials such as ceramic, glass fiber, resin, and any mixture thereof, and have a deacidification function.
Preferably, the hot water outlet pipe 34 and the hot water inlet pipe 36 in the above embodiments are detachably connected to the inlet and the outlet of the heat exchange pipe 35 by flanges, or directly connected by screw threads.
Preferably, in the above embodiment, the first type of absorption heat pump heating system selects a Li-Br solution working medium pair, in which water is a refrigerant and lithium bromide is an absorbent, and may also select other novel working medium pairs with excellent physicochemical properties.
The working principle is as follows:
the first step is as follows: the second circulation pump 4 is started, tap water is pumped into a circulation pipeline formed by connecting a hot water inlet pipeline 36, a hot water outlet pipeline 34 and a heat exchange pipeline 35 through a valve port at the lower end of the three-way valve 11, when the water volume of the circulation pipeline reaches 95% of the volume of the circulation pipeline (a space for expansion and contraction is reserved according to the upper limit temperature of hot water being 90 ℃), the valve port at the lower end of the three-way valve 11 and the circulation water pump 4 are closed, and two valve ports connected with the hot water inlet pipeline 36 of the three-way valve 11 are kept in an open state (the step is only carried out when the purification system is used for the first time or the tap water is required to be replaced when the hot water circulation pipeline has water loss or is used for a long time, the step is carried out when the two valve ports connected with the hot water inlet pipeline 36 of.
The second step is that: closing the fourth stop valve 19, opening the first stop valve 22, the second stop valve 28 and the third stop valve 31, opening the switch of the electric driving component such as the electromagnetic valve 23, and driving the heat pump heating system component to start operation by using the waste heat resource of the factory, flowing out the refrigerant liquid to be purified from the liquid storage tank 21, flowing into the first drying filter 24 after passing through the first stop valve 22 and the electromagnetic valve 23 in sequence, removing the particle impurities, the acidic substances and the moisture in the refrigerant, then the liquid refrigerant enters the second heat exchanger 25 to be preheated, the temperature of the liquid refrigerant rises, part of the refrigerant absorbs heat to change into the gaseous refrigerant, then the gas-liquid mixed state refrigerant flowing out from the second heat exchanger 25 at a high speed flows into the distillation chamber 13, after the liquid level of the refrigerant in the distillation chamber 13 reaches the high level value set by the liquid level controller 12, the liquid level controller 12 cuts off the electromagnetic, the liquid refrigerant is continuously heated and evaporated in the distillation chamber 13 through the heating pipeline 35, the gaseous refrigerant firstly flows through the filter screen 16 for second-stage purification under the suction action of the compressor 33, then enters the compressor 33 to be compressed into a high-temperature high-pressure state, the high-temperature high-pressure gaseous refrigerant enters the second heat exchanger 25 from the air outlet of the compressor 33 and exchanges heat with the low-temperature low-pressure liquid refrigerant flowing through the second heat exchanger 25 in the reverse direction, the cooled refrigerant enters the condenser 27 to be further cooled into a supercooled liquid refrigerant, then sequentially flows through the second stop valve 28 and the electronic expansion valve 29, is throttled by the electronic expansion valve 29 to be changed into a low-temperature low-pressure liquid refrigerant, then flows through the second drying filter 30 to be subjected to third-stage purification, and finally flows into the recovery tank 32 through the third. When the refrigerant in the distillation chamber 13 is evaporated to make the liquid level lower than the low level value set by the liquid level controller 12, the liquid level controller 12 opens the electromagnetic valve 23 through a relay, thereby realizing a continuous purification operation.
When the heat pump heating system operates stably, hot water at the temperature of 20-50 ℃ in the hot water inlet pipeline 36 is heated to 50-90 ℃ in the absorber 6 and the condenser 7, the hot water is sent into the heat exchange pipeline 35 through the hot water outlet pipeline 34 to exchange heat with the liquid refrigerant and be cooled and then returns to the hot water inlet pipeline 36, under the action of the second circulating pump 4, the hot water continuously carries heat in the circulating pipeline to heat the liquid refrigerant, the temperature sensor 15 is used for detecting the temperature of the refrigerant in the distillation chamber 13, the temperature interval of the refrigerant is set to be 60-90 ℃, and when the readings of the temperature sensor 15 are abnormal, the equipment load of the heat pump heating system is adjusted to enable the. When the reading of the pressure sensor 17 in the distillation chamber 13 exceeds the set value, the pressure sensor 17 performs overpressure protection by cutting off the electromagnetic valve 23 through a relay. When the level of the lubricating oil collected at the bottom of the distillation chamber 13 is level with the level observed through the sight glass 14, the electromagnetic valve 23 is temporarily closed, the fourth stop valve 19 is opened after the liquid refrigerant is completely vaporized, the lubricating oil flows into the oil storage tank 20, the fourth stop valve 19 is closed after the lubricating oil is completely recovered, and finally the electromagnetic valve 23 is opened to continue the purification process.
The third step: after the refrigerant in the liquid storage tank 21 is completely recovered, the first stop valve 22 is closed, and the rest valves and the electric switches are closed after the residual refrigerant in the pipeline is completely recovered. When the purity of the recovered refrigerant is not satisfactory, the filter-drier needs to be replaced. When the first dry filter 24 is replaced, the electromagnetic valve 23 is closed, and the first dry filter can be replaced; when the second filter drier 30 is replaced, the second stop valve 28 and the third stop valve 31 may be closed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. An energy-saving refrigerant purification system is characterized by comprising a first-class absorption heat pump heating system and a main purification system;
the first-class absorption heat pump heating system comprises a first heat exchanger (2), a first circulating pump (3), a second circulating pump (4), a third circulating pump (5), an absorber (6), a condenser (7), an expansion valve (8), an evaporator (9), a generator (10), a three-way valve (11), a hot water outlet pipeline (34), a heat exchange pipeline (35) and a hot water inlet pipeline (36), wherein the condenser (7) and the generator (10) are integrated in one shell, the absorber (6) and the evaporator (9) are integrated in the other shell, the generator (10), the first heat exchanger (2) and the absorber (6) are sequentially communicated through pipelines, the absorber (6), the first circulating pump (3), the first heat exchanger (2) and the generator (10) are sequentially communicated through pipelines, the condenser (7) is communicated with the evaporator (9) through pipelines, and an expansion valve (8) is arranged on the pipeline; the third circulating pump (5) is connected with the upper end and the lower end of the evaporator (9) in series through a pipeline to form a circulating loop; the three-way valve (11) and the second circulating pump (4) are sequentially connected in series to a hot water inlet pipeline (36), the hot water inlet pipeline (36) is sequentially connected to a hot water outlet pipeline (34) after passing through an absorber (6) and a condenser (7), the hot water outlet pipeline (34) is detachably connected with an inlet of a heat exchange pipeline (35) through a connector A1, and the hot water inlet pipeline (36) is detachably connected with an outlet of the heat exchange pipeline (35) through a connector A2;
the main purification system comprises a distillation chamber (13), an oil storage tank (20), a liquid storage tank (21), a first stop valve (22), an electromagnetic valve (23), a first drying filter (24), a second heat exchanger (25), a condenser (27), an electronic expansion valve (29), a second drying filter (30), a recovery tank (32) and a compressor (33); the liquid storage tank (21), the first drying filter (24), the second heat exchanger (25) and the distillation chamber (13) are sequentially communicated through pipelines, and a first stop valve (22) and an electromagnetic valve (23) are installed on the pipeline connecting the liquid storage tank (21) and the first drying filter (24); be equipped with liquid level controller (12) on stilling room (13) side wall face, heat transfer pipeline (35) are fixed in stilling room (13) and its import is located stilling room (13) side wall face with the export on, stilling room (13) side wall face intermediate height position department is equipped with temperature sensor (15), stilling room (13) side wall face is equipped with at the bottom and looks liquid mirror (14), stilling room (13) inside top is equipped with filter screen (16) and pressure sensor (17), solenoid valve (23) and liquid level controller (12), pressure sensor (17) are through relay electric connection, stilling room (13) bottom export is through pipeline intercommunication oil storage tank (21), concatenate fourth stop valve (19) between stilling room (13) and oil storage tank (21), stilling room (13), compressor (33), second heat exchanger (25), The condenser (27), the second dry filter (30) and the recovery tank (32) are sequentially communicated through pipelines, and an electronic expansion valve (29) is installed on the pipeline connecting the condenser (27) and the second dry filter (30); a low pressure meter (18) and a high pressure meter (26) are respectively arranged at the air inlet and the air outlet of the compressor (33), and a high-low pressure controller (1) is arranged between the high pressure meter (26) and the low pressure meter (18); a second stop valve (28) is connected in series between the condenser (27) and the electronic expansion valve (29), and a third stop valve (31) is connected in series between the second drying filter (30) and the recovery tank (32).
2. An energy efficient refrigerant purification system as recited in claim 1 wherein: the heating heat source of the generator (10) is selected from medium-pressure steam, high-temperature hot water or flue gas of a factory, and the low-temperature heat source of the evaporator (9) is industrial wastewater, factory cooling water, river water or underground hot spring water at the temperature of 30-50 ℃.
3. An energy efficient refrigerant purification system as recited in claim 1 wherein: the high position and the low position of the detection height of the liquid level controller (12) are respectively set to be correspondingly consistent with the inlet and the outlet of the heat exchange pipeline (35), the outlet of the heat exchange pipeline (35) is positioned at the lowest part of the side wall surface of the distillation chamber (13), and the inlet is positioned at the 4/5 position of the vertical height of the side wall surface of the distillation chamber (13).
4. An energy efficient refrigerant purification system as recited in claim 1 wherein: the compressor (33) is an oil-free lubrication type compressor.
5. An energy efficient refrigerant purification system as recited in claim 1 wherein: the filter screen (16) is a stainless steel filter screen.
6. An energy efficient refrigerant purification system as recited in claim 1 wherein: the drying agent in the first drying filter (24) and the second drying filter (30) is selected from molecular sieve, silica gel, activated alumina, activated carbon and any mixture thereof.
7. An energy efficient refrigerant purification system as recited in claim 1 wherein: the first and second dry filters (24, 30) are packed with ceramic, fiberglass, resin, and any mixture thereof.
8. An energy efficient refrigerant purification system as recited in claim 1 wherein: the hot water outlet pipeline (34) and the hot water inlet pipeline (36) are respectively detachably connected with the inlet and the outlet of the heat exchange pipeline (35) through flanges, or are directly connected through thread matching.
9. An energy efficient refrigerant purification system as recited in claim 1 wherein: the first-class absorption heat pump heating system selects a Li-Br solution working medium pair, wherein water is used as a refrigerant, and lithium bromide is used as an absorbent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110136248.0A CN112944750A (en) | 2021-02-01 | 2021-02-01 | Energy-saving refrigerant purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110136248.0A CN112944750A (en) | 2021-02-01 | 2021-02-01 | Energy-saving refrigerant purification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112944750A true CN112944750A (en) | 2021-06-11 |
Family
ID=76240660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110136248.0A Pending CN112944750A (en) | 2021-02-01 | 2021-02-01 | Energy-saving refrigerant purification system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112944750A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183951A (en) * | 2021-12-16 | 2022-03-15 | 珠海格力电器股份有限公司 | Refrigerant purification recovery device and refrigerant purification system |
| CN115297672A (en) * | 2022-06-30 | 2022-11-04 | 东北大学 | Data center air conditioning system with refrigerant recovery function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5535596A (en) * | 1995-07-31 | 1996-07-16 | Todack; James J. | Refrigerant reclamation and purification apparatus and method |
| US5605054A (en) * | 1996-04-10 | 1997-02-25 | Chief Havc Engineering Co., Ltd. | Apparatus for reclaiming refrigerant |
| US5943867A (en) * | 1997-09-10 | 1999-08-31 | Refrigerant Services Inc. | Refrigerant reclamation system |
-
2021
- 2021-02-01 CN CN202110136248.0A patent/CN112944750A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5535596A (en) * | 1995-07-31 | 1996-07-16 | Todack; James J. | Refrigerant reclamation and purification apparatus and method |
| US5605054A (en) * | 1996-04-10 | 1997-02-25 | Chief Havc Engineering Co., Ltd. | Apparatus for reclaiming refrigerant |
| US5943867A (en) * | 1997-09-10 | 1999-08-31 | Refrigerant Services Inc. | Refrigerant reclamation system |
Non-Patent Citations (3)
| Title |
|---|
| 暖通设计杜老师: "暖通设计师：精解溴化锂吸收式热泵原理，和应用方案", 《百度》 * |
| 邬昕: "制冷剂净化方法研究进展", 《制冷技术》 * |
| 马学莲: "《中国优秀硕士学位论文》", 15 September 2009 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183951A (en) * | 2021-12-16 | 2022-03-15 | 珠海格力电器股份有限公司 | Refrigerant purification recovery device and refrigerant purification system |
| CN114183951B (en) * | 2021-12-16 | 2022-12-09 | 珠海格力电器股份有限公司 | Refrigerant purification recovery device and refrigerant purification system |
| CN115297672A (en) * | 2022-06-30 | 2022-11-04 | 东北大学 | Data center air conditioning system with refrigerant recovery function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112944750A (en) | Energy-saving refrigerant purification system | |
| CN207716673U (en) | Freezer refrigerating unit | |
| CN2879088Y (en) | Heat exchanging module and refrigerant compressed-air purification machine | |
| CN101078582A (en) | High efficiency heat pump air conditioner of river, lake and sea water source | |
| CN111646619A (en) | High-efficiency energy-saving sewage freezing and concentrating device and treatment process thereof | |
| CN102466376A (en) | Screw-type refrigerating system and control method thereof | |
| CN202284874U (en) | Cold water unit system of parallelly-connected structure | |
| CN201335579Y (en) | Device for coolant purification and lubricating oil recovery | |
| CN109210658A (en) | A kind of water source heat pump units and its control method with cold recovery function | |
| CN2765110Y (en) | Natural actuating medium eclipsed type refrigerating plant | |
| CN206905332U (en) | Hydrocone type water cooling Brine machine groups system | |
| CN201885488U (en) | Screw type cooling system and control method thereof | |
| CN215842039U (en) | Low-temperature vacuum oil filter | |
| CN214746185U (en) | Air conditioner constant temperature optimizing apparatus for spinning | |
| CN107166790A (en) | Hydrocone type water cooling Brine machine groups system | |
| CN208091008U (en) | A kind of Two-stage Compression low-temperature air source heat pump unit with refrigerating function | |
| CN208751069U (en) | A kind of sewage air dual-source heat pump with the flow direction design of bridge-type refrigerant | |
| CN200952853Y (en) | Parallel double compressor heat pump hot-water machine set | |
| CN208983530U (en) | A kind of water source heat pump units with cold recovery function | |
| CN112762532A (en) | Water source heat pump groundwater formula vortex internal conversion heat recovery unit | |
| CN216407166U (en) | Compact integrated compressed air station | |
| CN208779752U (en) | A kind of high-efficiency sewage air dual-source heat pump with titanium exchanger | |
| CN111412375A (en) | Oil in-place integrated processing device | |
| CN110641244A (en) | New energy automobile air conditioner electric compressor detection system with oil gas purification function | |
| CN218033800U (en) | Water-cooled refrigerating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210611 |
|
| RJ01 | Rejection of invention patent application after publication |