CN110745896A - Seawater desalination system and method utilizing waste heat of compressor of refrigeration system - Google Patents
Seawater desalination system and method utilizing waste heat of compressor of refrigeration system Download PDFInfo
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- CN110745896A CN110745896A CN201911155915.9A CN201911155915A CN110745896A CN 110745896 A CN110745896 A CN 110745896A CN 201911155915 A CN201911155915 A CN 201911155915A CN 110745896 A CN110745896 A CN 110745896A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/046—Treatment of water, waste water, or sewage by heating by distillation or evaporation under vacuum produced by a barometric column
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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- 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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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Abstract
The invention discloses a seawater desalination system and method utilizing waste heat of a compressor of a refrigeration system, and relates to the technical field of seawater desalination. The system comprises a water pump, a vacuum evaporation chamber, a vacuum pump, a condensing device and a water storage tank; the seawater inlet of the water-cooled condenser is communicated with seawater, and the seawater outlet is communicated with the inlet of the vacuum evaporation chamber; the outlet of the vacuum evaporation chamber is communicated with the inlet of the condensing device through a vacuum pump, and the outlet of the condensing device is communicated with the water storage tank. The method comprises the following steps: pumping seawater, introducing into a water-cooled condenser, exchanging heat with refrigerant vapor, heating the seawater, introducing into a vacuum evaporation chamber, boiling, evaporating, and condensing to obtain fresh water. The invention utilizes the waste heat of the refrigeration system to desalt the seawater, fully utilizes the heat, and is energy-saving and environment-friendly.
Description
Technical Field
The invention relates to the technical field of seawater desalination, in particular to a seawater desalination system and method utilizing waste heat of a compressor of a refrigeration system.
Background
Fresh water is one of the most important resources that human beings rely on for survival and production. The lack of available fresh water has become one of the problems of common social attention in recent years, and seawater desalination is one of the approaches to solve the problem of water shortage. The seawater desalination can convert abundant seawater resources into fresh water, is particularly suitable for environments with inconvenient fresh water supply, such as islands, ships and the like, can convert the fresh water by using local materials on one hand, and can reduce the carrying amount of the fresh water on the other hand, thereby preventing the fresh water from breeding bacteria after being stored for a long time. Seawater desalination is one of the important sources of fresh water for islands and ships at present.
With the rapid development of refrigeration technology, the environments such as islands, ships and the like are generally matched with refrigeration systems, such as air conditioners on buildings and ships, and refrigeration bins on fishing boats and the like, which are all matched with corresponding refrigeration systems. The refrigerating system mainly comprises four parts, namely a compressor, a condenser, a throttling element (usually a capillary tube) and an evaporator, wherein the four parts are communicated in sequence to form a refrigerating cycle. The compressor is used as a power source of the refrigerating system and is used for extracting refrigerant vapor in the evaporator, increasing the temperature and pressure of the refrigerant vapor and then introducing the refrigerant vapor into the condenser. The condenser condenses the high-temperature and high-pressure refrigerant vapor output by the compressor into a high-pressure and normal-temperature refrigerant liquid by using an ambient cooling medium (air or water). The refrigerant liquid with high pressure and normal temperature is introduced into the throttling element to be depressurized to be changed into a low-temperature and low-pressure refrigerant, then the refrigerant exchanges heat with the substance to be cooled in the evaporator to reduce the temperature of the substance to be cooled, the refrigerant is heated to be changed into refrigerant vapor after exchanging heat with the substance to be cooled, the refrigerant vapor after exchanging heat is extracted by the compressor, and the refrigerant vapor is heated and pressurized to be conveyed into the condenser to realize refrigeration cycle.
When the condenser condenses the high-temperature and high-pressure refrigerant vapor output by the compressor, the heat in the refrigerant vapor is taken away by the environment cooling medium in a mode of heat exchange between the environment cooling medium and the refrigerant vapor. After heat exchange is completed, the part of environment cooling medium with heat is usually discharged into the environment again, so that the heat is naturally dissipated, and the part of heat is wasted to a certain extent and does not accord with the current production concept of energy conservation and environmental protection.
Disclosure of Invention
In order to solve the problems of the prior art, an object of the present invention is to provide a seawater desalination system using residual heat of a compressor of a refrigeration system, and another object of the present invention is to provide a seawater desalination method using the system. The invention utilizes the waste heat of the refrigeration system to desalt the seawater, fully utilizes the heat, and is energy-saving and environment-friendly.
The invention relates to a seawater desalination system utilizing waste heat of a compressor of a refrigeration system, which comprises the compressor, a water-cooled condenser, a throttling element and an evaporator, wherein the water-cooled condenser is provided with a refrigerant inlet, a refrigerant outlet, a seawater inlet and a seawater outlet; the compressor, the refrigerant inlet, the refrigerant outlet, the throttling element and the evaporator are sequentially communicated to form a refrigerant circulating loop, and the refrigerant is driven by the compressor to circularly flow in the refrigerant circulating loop;
the seawater desalination system comprises a water pump, a vacuum evaporation chamber, a vacuum pump, a condensing device and a water storage tank;
the seawater inlet of the water-cooled condenser is communicated with the water pump, the water pump is used for pumping seawater and injecting the seawater into the seawater inlet, and the seawater outlet is communicated with the inlet of the vacuum evaporation chamber;
the outlet of the vacuum evaporation chamber is positioned at the top of the vacuum evaporation chamber, the outlet of the vacuum evaporation chamber is communicated with the inlet of the condensing device through the vacuum pump, and the outlet of the condensing device is communicated with the water storage tank.
Preferably, a thermometer is arranged at the inlet of the vacuum evaporation chamber.
Preferably, the seawater desalination system further comprises a water intake pipe, a water supply pipe, a steam pipe and a fresh water pipe;
one end of the water taking pipe is communicated with a seawater inlet of the water-cooled condenser, the other end of the water taking pipe is communicated with seawater, and the water pump is arranged on the water taking pipe;
one end of the water supply pipe is communicated with a seawater outlet of the water-cooled condenser, and the other end of the water supply pipe is communicated with an inlet of the vacuum evaporation chamber;
one end of the steam pipe is communicated with an outlet of the vacuum evaporation chamber, and the other end of the steam pipe is communicated with an inlet of the condensing device; the vacuum pump is arranged on the steam pipe;
one end of the fresh water pipe is communicated with the outlet of the condensing device, and the other end of the fresh water pipe is communicated with the water storage tank.
Preferably, the outer wall of the water supply pipe is coated with a heat insulating material, and the steam pipe is a spiral coil pipe.
Preferably, the inlet of the vacuum evaporation chamber is positioned in the middle of the vacuum evaporation chamber; an infrared sensor is arranged below the inlet of the vacuum evaporation chamber; the bottom of the vacuum evaporation chamber is provided with a discharge pipe, a discharge valve is arranged in the discharge pipe, the discharge pipe is communicated with a material pumping pump, and the infrared sensor is respectively electrically connected with the discharge valve and the material pumping pump.
Preferably, a seawater filter is arranged at the water pumping port of the water pump.
Preferably, the upper part of the water storage tank is provided with a liquid level sensor.
Preferably, the condensing device is an air-cooled condenser.
A seawater desalination method comprises the following steps:
(1) heat exchange and temperature rise of seawater: pumping seawater, injecting the pumped seawater into a seawater inlet of a water-cooled condenser of the refrigeration system, and performing heat exchange between the seawater and refrigerant vapor in the water-cooled condenser to heat;
(2) vacuum evaporation: introducing the heated seawater into a vacuum evaporation chamber, maintaining the vacuum evaporation chamber at negative pressure, and evaporating the seawater in the vacuum evaporation chamber to form water vapor;
(3) condensation and storage: and introducing the obtained water vapor into a condensing device, carrying out heat release and condensation on the water vapor in the condensing device to form fresh water, and introducing the obtained fresh water into a water storage tank for storage.
Preferably, the vacuum degree of the vacuum evaporation chamber in the step (2) is-0.09 MPa to-0.05 MPa.
The seawater desalination system and the method using the waste heat of the compressor of the refrigeration system have the advantages that: the invention takes seawater as a cooling medium of a condenser of a refrigeration system, and the seawater absorbs the heat of refrigerant vapor to condense the refrigerant vapor, so that the seawater absorbs heat and is heated. Introducing the heated seawater into a vacuum evaporation chamber, boiling the heated seawater under the action of negative pressure to generate water vapor, and condensing the water vapor to obtain fresh water. The invention fully utilizes the waste heat of the compressor to convert the seawater into fresh water, can fully utilize the heat of a refrigerating system, and realizes energy conservation and environmental protection. The converted fresh water can be directly used as water for life or production, can be well applied to the environments of ships, islands and the like, and has good practical value. The air conditioner is well matched with the existing refrigerating system, the existing refrigerating system does not need to be changed, and the air conditioner has wide applicability. The seawater is boiled by adopting a vacuum evaporation mode, no additional heating is needed, and the energy consumption in the seawater desalination process is low. The equipment structure is simple, and the equipment cost is low.
Drawings
FIG. 1 is a schematic structural diagram of a seawater desalination system using waste heat of a compressor of a refrigeration system and a refrigeration system according to the present invention;
FIG. 2 is a flow chart illustrating the steps of a method for desalinating seawater using residual heat of a compressor of a refrigeration system according to the present invention.
Description of reference numerals: 1-compressor, 2-water-cooled condenser, 3-throttling element, 4-evaporator, 5-water pump, 6-vacuum evaporation chamber, 7-vacuum pump, 8-condensing unit, and 9-water storage tank.
Detailed Description
As shown in fig. 1, the seawater desalination system using the residual heat of the compressor of the refrigeration system is based on the refrigeration system in the prior art. The refrigerating system comprises a compressor 1, a water-cooled condenser 2, a throttling element 3 and an evaporator 4 which are sequentially communicated, wherein the four parts form a refrigerant circulating loop, and a refrigerant circularly flows in the circulating loop under the driving of the compressor. The water-cooled condenser 2 comprises a hot fluid pipeline and a cooling medium pipeline, wherein the hot fluid pipeline and the cooling medium pipeline are in contact with each other, so that the fluids in the two pipelines can exchange heat through the pipe walls of the pipelines. The two ends of the hot fluid pipeline are respectively a refrigerant inlet and a refrigerant outlet, and the two ends of the cooling medium pipeline are respectively a seawater inlet and a seawater outlet. The outlet of the compressor 1 is communicated with the refrigerant inlet of the condenser, the refrigerant outlet of the condenser is communicated with the inlet of the throttling element 3, the outlet of the throttling element 3 is communicated with the inlet of the evaporator 4, and the outlet of the evaporator 4 is communicated with the inlet of the compressor 1. The refrigerant vapor exchanges heat with the substance to be cooled in the evaporator 4, so that the temperature of the substance to be cooled is lowered and the temperature of itself is raised. The compressor 1 extracts the refrigerant vapor after heat exchange in the evaporator 4 in time, and compresses the refrigerant vapor to change the refrigerant vapor into high-temperature and high-pressure refrigerant vapor. The compressor 1 feeds the refrigerant vapor of high temperature and high pressure into the water-cooled condenser 2, and the refrigerant vapor exchanges heat with the ambient cooling medium and is condensed in the water-cooled condenser 2. And the condensed refrigerant is introduced into the throttling element 3 for throttling and pressure reduction, then is introduced into the evaporator 4 for heat exchange, is extracted into the compressor 1 after heat exchange, and repeats the refrigeration cycle.
The seawater desalination system comprises a water pump 5, a vacuum evaporation chamber 6, a vacuum pump 7, a condensing device 8, a water storage tank 9, a water taking pipe, a water supply pipe, a steam pipe and a fresh water pipe which are used for realizing the communication function, wherein the four water pipes are all commonly used communicating pipes.
The seawater inlet of the water-cooled condenser 2 is communicated with seawater through a water pump 5, and the seawater outlet is communicated with the inlet of a vacuum evaporation chamber 6; the outlet of the vacuum evaporation chamber 6 is communicated with the inlet of a condensing device 8 through a vacuum pump 7, and the outlet of the condensing device 8 is communicated with a water storage tank 9. One end of the water taking pipe is communicated with a seawater inlet of the water-cooled condenser 2, the other end of the water taking pipe is communicated with seawater, and the water pump 5 is arranged on the water taking pipe; one end of the water supply pipe is communicated with the seawater outlet of the water-cooled condenser 2, and the other end is communicated with the inlet of the vacuum evaporation chamber 6; one end of the steam pipe is communicated with the outlet of the vacuum evaporation chamber 6, and the other end is communicated with the inlet of the condensing device 8; the vacuum pump 7 is arranged on the steam pipe; one end of the fresh water pipe is communicated with the outlet of the condensing device 8, and the other end is communicated with the water storage tank 9. The vacuum evaporation chamber 6 is a negative pressure closed space, and the inside air is mainly drawn by a vacuum pump 7 to maintain the negative pressure.
The refrigerant vapor output by the compressor 1 is introduced into a hot fluid pipeline of the water-cooled condenser 2 to be used as a substance to be cooled. Seawater is pumped to the seawater inlet of the water-cooled condenser 2 by a water pump 5. Correspondingly, a valve which can be opened and closed is arranged at the water taking pipe. Seawater is pumped into a cooling medium pipe of the water-cooled condenser 2 by a water pump 5 as a cooling medium. Refrigerant vapor circulates in the hot fluid pipeline, seawater circulates in the cooling medium pipeline, the refrigerant vapor and the seawater exchange heat through the pipe wall of the pipeline, the seawater takes away the heat of the refrigerant vapor, the refrigerant vapor is cooled and condensed, the condensed refrigerant flows out from the refrigerant outlet and enters the throttling element 3, and the refrigeration cycle is continued. And the temperature of the seawater itself rises after heat exchange with the refrigerant vapor. The heated seawater flows into the vacuum evaporation chamber 6 through a water supply pipe, the pressure in the vacuum evaporation chamber 6 is negative pressure, and the boiling point of the seawater is reduced in a negative pressure environment. Seawater is boiled in the vacuum evaporation chamber 6, water in the seawater is evaporated into steam and rises, and impurities such as salt are deposited at the bottom of the vacuum evaporation chamber 6. The water vapor flows into the condensing device 8 through the vapor pipe, is condensed into fresh water through the condensing device 8, and then flows into the water storage tank 9 through the fresh water pipe to be stored.
The invention aims at the problem of waste heat waste of the existing refrigerating system, seawater is extracted as a cooling medium of the water-cooled condenser 2, on one hand, refrigerant steam can be condensed, on the other hand, the seawater can be heated after heat exchange, and the heated seawater is evaporated in a vacuum evaporation mode to generate fresh water. The invention fully utilizes the waste heat of the compressor 1 to convert the seawater into fresh water, can fully utilize the heat of a refrigerating system, and realizes energy conservation and environmental protection. The converted fresh water can be directly used as water for life or production, can be well applied to the environments of ships, islands and the like, and has good practical value. The air conditioner is well matched with the existing refrigerating system, the existing refrigerating system does not need to be changed, and the air conditioner has wide applicability. The seawater is boiled by adopting a vacuum evaporation mode, no additional heating is needed, and the energy consumption in the seawater desalination process is low. The equipment structure is simple, and the equipment cost is low.
The thermometer is arranged at the inlet of the vacuum evaporation chamber 6 and used for detecting the temperature of the seawater flowing into the vacuum evaporation chamber 6, the vacuum degree in the vacuum evaporation chamber 6 can be adjusted according to the temperature of the seawater, the seawater is ensured to be fully boiled in the vacuum evaporation chamber 6, and the seawater is prevented from being incapable of being boiled due to insufficient vacuum degree.
The outer wall of the water supply pipe is coated with a heat insulating material, which may be a polyurethane material. The water supply pipe is a communication pipe between the water-cooled condenser 2 and the vacuum evaporation chamber 6, and the heated seawater flows into the vacuum evaporation chamber 6 through the pipe. The temperature of the seawater is a key parameter in the vacuum evaporation process, and generally, the higher the temperature of the seawater is, the more favorable the vacuum evaporation process is. Therefore, the water supply pipe is subjected to heat insulation treatment, the seawater is prevented from being radiated and cooled in the flowing process of the water supply pipe, and a good evaporation effect is ensured.
The steam pipe is in a spiral coil structure, the steam pipe is used as a communicating pipe between the vacuum evaporation chamber 6 and the condensing device 8, and the steam flowing out of the vacuum evaporation chamber 6 flows into the condensing device 8 through the steam pipe for condensation. Therefore, the steam pipe is arranged into a spiral coil pipe structure, the length of the steam pipe can be prolonged, the stroke of the steam is further prolonged, the steam can naturally dissipate heat and cool when flowing in the steam pipe, and the subsequent condensation process is convenient to carry out.
The inlet of the vacuum evaporation chamber 6 is located in the middle of the vacuum evaporation chamber 6, and the outlet is located at the top. An infrared sensor is arranged below an inlet of the vacuum evaporation chamber 6, a material discharging pipe is further arranged at the bottom of the vacuum evaporation chamber 6, a material discharging valve is arranged in the material discharging pipe, the material discharging pipe is further communicated with a material pumping pump, and the infrared sensor is respectively electrically connected with the material discharging pipe and the material discharging valve. Seawater is introduced into the vacuum evaporation chamber 6 from an inlet, boiling evaporation is carried out in the vacuum evaporation chamber 6, impurities such as salt and the like can be precipitated at the bottom of the vacuum evaporation chamber 6, and water vapor can float to an outlet at the top and flow out. The infrared sensor is located below the inlet, and impurities are gradually deposited in the vacuum evaporation chamber 6, and the infrared sensor is used for detecting the height of the impurities. During the vacuum evaporation process, the discharge valve is closed, so that the inside of the vacuum evaporation chamber 6 is in a closed state. When the infrared sensor detects that the impurities are deposited to a certain height, the discharge valve and the material pumping pump are controlled to be automatically opened, so that the material pumping pump starts to pump the impurities, and the inlet is prevented from being blocked by the impurities. In addition, a timer circuit can be configured to make the material pumping pump and the material discharging valve automatically stop after a certain time of operation.
Be equipped with the sea water filter in the pump outlet department of water pump 5, the filter adopt the water filter commonly used can, the large granule impurity of mainly used filtering sea water prevents equipment such as impurity damage water pump 5.
The upper part of the water storage tank 9 is provided with a liquid level sensor which is used for detecting the liquid level height in the water storage tank 9 and preventing the water in the water storage tank 9 from overflowing.
The condensing device 8 adopts an air-cooled condenser. The air-cooled condenser and the water-cooled condenser 2 have the same heat exchange principle, and both fluids exchange heat through the pipe wall of the pipeline. The difference is that the air-cooled condenser extracts air as the cooling medium. In this embodiment, the air pump is used to pump the ambient air into the air-cooled condenser to exchange heat with the water vapor, so as to cool and condense the water vapor. The air-cooled condenser is adopted, the cooling medium is convenient to obtain, and the condensing process is pollution-free and low in energy consumption.
As shown in fig. 2, the embodiment further provides a seawater desalination method based on the seawater desalination system, which mainly includes the following steps:
(1) heat exchange and temperature rise of seawater: the compressor 1 draws the refrigerant vapor in the evaporator 4 to pass through the refrigerant inlet of the water-cooled condenser 2, and the refrigerant vapor is made to flow in the hot fluid pipe. Meanwhile, seawater is pumped by a water pump 5 and introduced into a seawater inlet of the water-cooled condenser 2, so that the seawater flows in a cooling medium pipeline. The refrigerant vapor and the seawater exchange heat through the pipe wall of the pipeline, so that the refrigerant vapor is cooled and condensed, and the seawater absorbs heat and is heated.
(2) Vacuum evaporation: the heated seawater is introduced into the vacuum evaporation chamber 6, the seawater is boiled under the action of negative pressure in the vacuum evaporation chamber 6, the water in the seawater turns into vapor to float upwards, and the salt and impurities are deposited at the bottom of the vacuum evaporation chamber 6.
(3) Condensation and storage: the obtained water vapor is introduced into an air-cooled condenser for condensation, so that the water vapor is condensed into fresh water, and the obtained fresh water is introduced into a water storage tank 9 for storage.
Wherein, in the step (2), the vacuum degree of the vacuum evaporation chamber 6 is maintained between-0.09 MPa and-0.05 MPa. In the vacuum degree range, the seawater can be fully boiled and evaporated, and the energy consumption required for maintaining the vacuum degree is low.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse explanation, these directional terms do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present application.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures, and it is to be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
It will be apparent to those skilled in the art that various other changes and modifications may be made in the above-described embodiments and concepts and all such changes and modifications are intended to be within the scope of the appended claims.
Claims (10)
1. A seawater desalination system utilizing waste heat of a compressor of a refrigeration system comprises the compressor, a water-cooled condenser, a throttling element and an evaporator, wherein the water-cooled condenser is provided with a refrigerant inlet, a refrigerant outlet, a seawater inlet and a seawater outlet; the compressor, the refrigerant inlet, the refrigerant outlet, the throttling element and the evaporator are sequentially communicated to form a refrigerant circulating loop, and the refrigerant is driven by the compressor to circularly flow in the refrigerant circulating loop; the method is characterized in that:
the seawater desalination system comprises a water pump, a vacuum evaporation chamber, a vacuum pump, a condensing device and a water storage tank;
the seawater inlet of the water-cooled condenser is communicated with the water pump, the water pump is used for pumping seawater and injecting the seawater into the seawater inlet, and the seawater outlet is communicated with the inlet of the vacuum evaporation chamber;
the outlet of the vacuum evaporation chamber is positioned at the top of the vacuum evaporation chamber, the outlet of the vacuum evaporation chamber is communicated with the inlet of the condensing device through the vacuum pump, and the outlet of the condensing device is communicated with the water storage tank.
2. The seawater desalination system using waste heat of a compressor of a refrigeration system as claimed in claim 1, wherein a thermometer is disposed at an inlet of the vacuum evaporation chamber.
3. The seawater desalination system using waste heat of a compressor of a refrigeration system as claimed in claim 1, further comprising a water intake pipe, a water supply pipe, a steam pipe and a fresh water pipe;
one end of the water taking pipe is communicated with a seawater inlet of the water-cooled condenser, the other end of the water taking pipe is communicated with seawater, and the water pump is arranged on the water taking pipe;
one end of the water supply pipe is communicated with a seawater outlet of the water-cooled condenser, and the other end of the water supply pipe is communicated with an inlet of the vacuum evaporation chamber;
one end of the steam pipe is communicated with an outlet of the vacuum evaporation chamber, and the other end of the steam pipe is communicated with an inlet of the condensing device; the vacuum pump is arranged on the steam pipe;
one end of the fresh water pipe is communicated with the outlet of the condensing device, and the other end of the fresh water pipe is communicated with the water storage tank.
4. The seawater desalination system using residual heat of a compressor of a refrigeration system as claimed in claim 3, wherein the outer wall of the water supply pipe is coated with a heat insulating material, and the steam pipe is a spiral coil pipe.
5. The seawater desalination system using waste heat of a compressor of a refrigeration system as claimed in claim 3, wherein the inlet of the vacuum evaporation chamber is located in the middle of the vacuum evaporation chamber; an infrared sensor is arranged below the inlet of the vacuum evaporation chamber; the bottom of the vacuum evaporation chamber is provided with a discharge pipe, a discharge valve is arranged in the discharge pipe, the discharge pipe is communicated with a material pumping pump, and the infrared sensor is respectively electrically connected with the discharge valve and the material pumping pump.
6. The seawater desalination system using waste heat of a compressor of a refrigeration system as claimed in claim 3, wherein a seawater filter is provided at a water pump outlet of the water pump.
7. The seawater desalination system using waste heat of a compressor of a refrigeration system as claimed in claim 1, wherein a liquid level sensor is disposed at an upper portion of the water storage tank.
8. The seawater desalination system using waste heat of a compressor of a refrigeration system as claimed in claim 1, wherein the condensing means is an air-cooled condenser.
9. A seawater desalination method is characterized by comprising the following steps:
(1) heat exchange and temperature rise of seawater: pumping seawater, injecting the pumped seawater into a seawater inlet of a water-cooled condenser of the refrigeration system, and performing heat exchange between the seawater and refrigerant vapor in the water-cooled condenser to heat;
(2) vacuum evaporation: introducing the heated seawater into a vacuum evaporation chamber, maintaining the vacuum evaporation chamber at negative pressure, and evaporating the seawater in the vacuum evaporation chamber to form water vapor;
(3) condensation and storage: and introducing the obtained water vapor into a condensing device, carrying out heat release and condensation on the water vapor in the condensing device to form fresh water, and introducing the obtained fresh water into a water storage tank for storage.
10. The seawater desalination method of claim 9, wherein the vacuum degree of the vacuum evaporation chamber in the step (2) is between-0.09 MPa and-0.05 MPa.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111252834A (en) * | 2020-03-23 | 2020-06-09 | 导洁(北京)环境科技有限公司 | Low-energy-consumption wastewater evaporation separation method based on refrigerant circulation |
| US11618693B2 (en) | 2020-11-02 | 2023-04-04 | King Fahd University Of Petroleum And Minerals | Multimode system for cooling and desalination |
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| CN104961181A (en) * | 2015-06-04 | 2015-10-07 | 浙江大学 | Air-conditioning and seawater desalination combined production method and system |
| CN106430382A (en) * | 2016-12-30 | 2017-02-22 | 广东申菱环境系统股份有限公司 | Simple seawater desalination device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111252834A (en) * | 2020-03-23 | 2020-06-09 | 导洁(北京)环境科技有限公司 | Low-energy-consumption wastewater evaporation separation method based on refrigerant circulation |
| US11618693B2 (en) | 2020-11-02 | 2023-04-04 | King Fahd University Of Petroleum And Minerals | Multimode system for cooling and desalination |
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