CN208671231U - A kind of cold energy of liquefied natural gas utilization system - Google Patents
A kind of cold energy of liquefied natural gas utilization system Download PDFInfo
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- CN208671231U CN208671231U CN201820990987.XU CN201820990987U CN208671231U CN 208671231 U CN208671231 U CN 208671231U CN 201820990987 U CN201820990987 U CN 201820990987U CN 208671231 U CN208671231 U CN 208671231U
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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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- 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]
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Abstract
The utility model relates to a kind of cold energy of liquefied natural gas utilization system, it further includes the data center's air-conditioning system being connected with each other and air conditioner cold accumulation pond that the utilization system, which includes the LNG cold energy seawater desalination ice melting system being connected with each other and fresh water retention reservoir,;By the air conditioning water pipe the air conditioner cold accumulation pond, first pass to the air conditioning water cooling coil in the fresh water retention reservoir, the air conditioning water cooling coil in the LNG cold energy seawater desalination ice melting system dip tank is passed to again, the air conditioner cold accumulation pond is finally returned to, air conditioning water cooling cycle pipeline is formed.A large amount of waste heats of a large amount of cold energy and data center's release that the utility model makes full use of LNG gasification process to be discharged, finally obtain the freshwater resources for meeting part industrial and agricultural production or civilian requirement, guarantee the stable operation of data center simultaneously and reduce its energy consumption, guarantee the continuity of industrialized production to the maximum extent and reduces the operating cost of sea water desalination and data center simultaneously.
Description
Technical field
The utility model relates to Oil & Gas Storage, Engineering Thermophysics, marine resources to utilize technology, water treatment technology, building ring
The crossing domain in border and energy source use engineering, and in particular to a kind of liquefied natural gas (LNG) cold energy is used for sea water desalination sum number
According to the cold energy utilization system of center air-conditioner.
Background technique
LNG is the liquified natural gas under normal pressure, low temperature (- 162 DEG C), is entering pipeline, is being used as fuel or chemical industry original
It is used after being both needed to gasification before material, when LNG gasification can theoretically discharge the cold energy of 830kJ/kg.Imported L NG receiving station generally builds
Near harbour, the cold energy of LNG gasification release is typically directly discharged into seawater, with the continuous expansion of receiving station's scale, greatly
The cold energy of amount, which constitutes the ecological environment of surrounding waters, to be influenced.If this part cold energy can be used for sea water desalination and data center is empty
Adjusting system then can not only mitigate influence of the LNG cold energy to harbour surrounding waters ecological environment, but also can reduce freezing sea water desalination
With the energy consumption of data center air-conditioner system, there is energy saving, water-saving, reduction carbon emission, the meaning of comprehensive energy utilization resource.With
Natural gas proportion in China's non-renewable energy consumption structure increases substantially, and imported L NG harbour development in coastal area is fast
Speed, this be only LNG cold energy use industry development provide possibility, also become inevitable requirement.
As one of important infrastructures of industries such as internet, cloud computing and big data, the fast development of data center
It is even more unprecedented.The energy consumption of data center not only includes the energy consumption of information technoloy equipment, further include air-conditioning refrigeration system, power-supply system and
The energy consumption of the auxiliary equipment such as lighting system.Wherein, it is about 40% that air conditioning energy consumption, which accounts for the ratio of data center's total energy consumption, accounting
It is only second to information technoloy equipment energy consumption.Therefore, reducing air conditioning energy consumption is the pass improved data center's efficiency, reduce its operating cost
Key.Data center's whole year runs, the heat dissipation of the information technoloy equipment of dense arrangement becomes a whole year basicly stable heat source, and air-conditioning
Energy consumption is then mainly used for maintaining the temperature and humidity of data center computer room, remover apparatus heat dissipation, its main feature is that needing whole year to run and providing complete
Year substantially invariable cooling capacity.
Method one of of the freezing desalination as sea water desalination, cold source can use natural cold source and artificial cold source, the former
It is limited by geographic climate, it is difficult to which a wide range of industrialization uses, and the latter needs to consume a large amount of energy, and (process of refrigerastion often needs
Consume high-grade electric energy).LNG receiving station can be to provide the cold source of low cost using freezing sea water desalination, but is based on
Cold energy is only transferred to seawater in the desalting process of freezing, separates salinity and water, cold energy for seawater phase transformation
Itself is simultaneously not consumed.If obtaining product water, it is still desirable to will be frozen and the ice-out of desalination is fresh water.Therefore existing
Compound desalination processes in the desalination technology of equipment with high desalinization remain a need for heat source, this heat source can be natural heat source such as
Seawater or air are also possible to remaining waste thermal energy or consume other a part of energy, such as use the microwave treatment of electric energy or use it
He builds a stable thermal environment by heat source.Natural environment and climate change are limited by using natural heat source, it is difficult to manually be subject to
Control consumes other a part of energy and inevitably increases the cost to desalinize seawater.Therefore, make full use of data center computer room whole year stable
Waste heat is very ideal industrial waste cold and residual heat integrative utilization side as the compound desalination process heat source based on freezing
Formula.
A kind of patent document CN104891593A " equipment with high desalinization method for desalting seawater and dress based on cold energy of liquefied natural gas
Set " and patent document CN205953579U " a kind of processing simulation device based on LNG cold energy sea water desalination " be all made of gravity
Desalinating process needs to create a hot environment by the consumption energy or utilizes the temperature of ice and environment although salt rejection rate is high
Difference, which carries out heating to ice in the natural environment, makes its partial melting.If environment temperature directly affects ice body using natural temperature differential
Thawing speed so that desalinating process is uncontrollable, Northern Part of China winter environment temperature is lower, using nature heat source into
Row gravity desalinization can make desalination processes very slow.The speed that heating was more easily controlled and improved desalinating process is carried out using the energy
Degree, but if improving temperature with conventional heating mode carries out gravity desalinization process, causes the waste of the energy unavoidably.Patent document
CN206915896U " a kind of freezing-microwave-centrifugal compound desalination plant based on cold energy of liquefied natural gas " uses microwave
It handles and melts instead of natural in natural environment, although can be improved melting rate and more high-efficient than other heating means,
But still it needs to increase operating cost.Patent document CN206858344U " seawater desalination system based on cold energy of liquefied natural gas "
By the way that a certain amount of natural sea-water accelerating part ice-out is added in borneol and reduces the brine viscosity adhered on borneol surface, into
And separated brine with ice by centrifugation desalination, improve the purity of ice.
Although the above-mentioned prior art can be effectively reduced the cost of compound desalination, this single effect of fresh water is only obtained
Fruit, and product water is obtained since the prior art is required to heat thawing fresh ice, it is still desirable to consider the problems of heat source.
Utility model content
The purpose of this utility model is intended to be promoted the effect of the prior art, proposes a kind of LNG cold energy to be used for sea water desalination
With the cold energy utilization system of data center air-conditioner, with a large amount of cold energy and data for making full use of LNG gasification process to be discharged
A large amount of waste heats of center release, finally obtain the freshwater resources for meeting part industrial and agricultural production or civilian requirement, while guaranteeing number
According to center stable operation and reduce its energy consumption, guarantee the continuity of industrialized production to the maximum extent and to reduce seawater light simultaneously
Change the operating cost with data center.
Specifically, the utility model provides a kind of utilization system of LNG cold energy, the utilization system packet
The LNG cold energy seawater desalination ice melting system being connected with each other and fresh water retention reservoir are included, further includes the data center's air-conditioning being connected with each other
System and air conditioner cold accumulation pond.
By the air conditioning water pipe the air conditioner cold accumulation pond, the air-conditioning freezing in the fresh water retention reservoir is first passed to
Water cooling coil, then the air conditioning water cooling coil in the LNG cold energy seawater desalination ice melting system dip tank is passed to, finally
The air conditioner cold accumulation pond is returned to, air conditioning water cooling cycle pipeline is formed.
The utility model is by being flowed through by the air conditioning water cooling cycle pipeline the air conditioner cold accumulation pond
Device sequence optimizes, it can be ensured that discharges the thermal energy discharged from data center's air-conditioning system and LNG gasification process
Cold energy efficiently, adequately utilize, to realize the effect of energy conservation and industrialization practicability.
Technical solution known in the art can be used in LNG cold energy seawater desalination ice melting system described in the utility model.Make
For one of the preferred embodiment of the utility model, the LNG cold energy seawater desalination ice melting system include be sequentially connected it is cold using LNG
Secondary refrigerant cooler, seawater flake ice maker, filtering type centrifugation desalter and the dip tank of energy;The fresh water of the dip tank goes out
Mouth is connected with the fresh water retention reservoir.
Secondary refrigerant cooler described in the utility model is panel cooler, setting natural gas channel and secondary in cooler
The outlet of refrigerant passage, the secondary refrigerant channel is connected to the seawater flake ice maker.Phase transformation has can be used in the secondary refrigerant
Circulation, can also be used and recycle without phase-change.Refrigerant should be used as much as possible stable, nontoxic Single Medium or blending agent, there is phase
The phase transition temperature become under circulation secondary refrigerant operating pressure should meet system requirements.The secondary refrigerant cooler passes through secondary cold
Matchmaker's piping connection in be provided on fluid reservoir, the secondary refrigerant pipeline secondary refrigerant pump and non-return valve.
Seawater flake ice maker described in the utility model is provided with seawater inlet.It is set inside the preferably described dip tank of the utility model
Have a former seawater cooling coil, seawater supply line via after the former seawater cooling coil being located inside the dip tank with the sea
The seawater inlet of water slice ice machine is connected, to realize the pre-cooling to seawater and improve the production ice rate of slice ice machine.When the LNG cold energy
When being equipped with concentrated seawater recovery system in seawater desalination ice melting system, former seawater also can be set inside the concentrated seawater recovery system
Cooling coil, seawater supply line can be successively via the former seawater cooler pans inside the concentrated seawater recovery system and dip tank
The seawater inlet of seawater flake ice maker described in Guan Houyu is connected.
Seawater flake ice maker described in the utility model can be by being centrifuged desalter with the filtering type behind gravity desalinization room
Connection.The indoor temperature of gravity desalinization can directly adopt seawater maintenance according to process requirement.The utility model can also incite somebody to action
The bypass of the air conditioning water cooling cycle pipeline is passed through the gravity desalinization room, so that the gravity desalinization room can be used
Data center's air conditioning water return water keeps desalination room temperature basicly stable.
Seawater flake ice maker described in the utility model can also directly be connect with filtering type centrifugation desalter, such case
Under, the filtering type centrifugation desalter should be equipped with seawater inlet, in order to form mixture of ice and water in centrifuge, after promotion
Continuous desalination, the progress of melting process.
Filtering type centrifugation desalter described in the utility model has cylindrical housing, has cylindrical screen in shell, outside
It is liquids recovery region between shell and sieve, there are concentrated seawater recycling bins in the liquids recovery region by piping connection.The mistake
Filter formula centrifugation desalter is connected with dip tank.
Air conditioning water cooling coil is equipped in dip tank described in the utility model, for reducing in air conditioner cold accumulation pond
Chilled water temperature, while melting produced fresh ice using the heat discharged from air-conditioning system, obtain fresh water.
Air conditioning water cooling coil also is provided in the fresh water retention reservoir, for reducing the freezing in air conditioner cold accumulation pond
Coolant-temperature gage, while recycling the cooling capacity in produced fresh water.
Air conditioner cold accumulation pond described in the utility model is connect by pipeline with data center air-conditioning system, is mentioned for data center
Semen donors are used to take away the heat of information technoloy equipment discharge, maintain the temperature and humidity of data center IT computer room constant.
System provided by the utility model can further include electric refrigerating machine.The air conditioner cold accumulation pond simultaneously with electricity
Refrigeration machine connection can star electric refrigeration system when water temperature is higher than setting value in chilled water reservoir to ensure water storage pool
Interior water temperature maintains to stablize.The electric refrigerating machine is the auxiliary cold source of data center's air-conditioning system, when seawater desalination system is provided
Cold energy be not able to satisfy and exclude data center's waste heat and cause in water storage pool water temperature further using electric refrigeration system when increasing
Cooling reservoir temperature, or when seawater desalination system failure directly to data center's air-conditioning system cooling supply, to maintain in data
The temperature and humidity of heart IT computer room is constant.
Since typical data center air-conditioning system uses electric refrigerating machine as cold source, and chilled water storage system is set as refrigeration
Safety guarantee cold source when the system failure, operation order are that cold is preferential;Method provided by the utility model uses LNG cold energy
It then has ready conditions and cold source operation order is changed to LNG cold energy is preferential, and electric refrigerating machine is as LNG gasification system or seawater desalination system
Safety guarantee cold source when failure, so that it may the safe operation of data center is ensured while realizing energy conservation.Meanwhile in data
The heat of heart release is that desalination process (mainly deicing processes) provide stable heat source.
Benefit can be further processed after the recovery processing of concentrated seawater recovery system in the obtained concentrated seawater of the utility model
With being such as delivered to salt manufacturing or salinization factory.
The utility model provides the method for carrying out the comprehensive utilization of LNG cold energy using above system simultaneously.
The core of this method is: LNG cold energy being used for seawater ice making and salt-water and is separated, while by data center's air-conditioning
The heat of system release is delivered to seawater desalination ice melting system as required heat source by Air-conditioning Cycle chilled water, takes off in the seawater
Air-conditioning Cycle chilled water described in salt deicing processes is cooled after heat exchange, so that it is empty as data center to carry LNG cold energy
The cold source of adjusting system.
System provided by the utility model can be multiple as the seawater based on refrigerating process simultaneously using the LNG cold energy of low cost
Cold source needed for closing desalinating process and data center's air-conditioning system.LNG cold energy is initially used for the phase transition process of seawater freezing icing, adopts
It uses the heat dissipation of data center's information technoloy equipment as heat source needed for the compound desalinating process of seawater based on refrigerating process, is being desalinized seawater
While the cold energy that LNG gasification process is discharged is transferred to data center's air-conditioning system, for reducing chilled water temperature, with dimension
The temperature and humidity for holding data center's IT computer room is constant.The LNG cold energy utilization system that the utility model is proposed can be abundant
While obtaining desalinizing seawater using LNG cold energy, the temperature and humidity environment of data center IT computer room is ensured, while reducing sea water desalination
The operation energy consumption of technique and data center air-conditioner system reduces carbon emission and the cold pollution to LNG receiving station surrounding waters.This reality
With the system of novel offer convenient for control, step is simple, energy conservation and environmental protection, shortens the process time, can reduce sea water desalination work simultaneously
Skill and data center air-conditioner system operation cost have extremely strong commercial introduction value.
Detailed description of the invention
Fig. 1 is that the utility model LNG cold energy is empty for freezing-gravity-centrifugal compound desalination process and data center
The cold energy utilization system of tune.
Fig. 2 is that the utility model is suitable for LNG cold energy for freezing-gravity-centrifugal compound desalination process and data
The gravity desalinization room of the cold energy utilization system of center air-conditioner.
Fig. 3 is that the utility model LNG cold energy is empty for freezing-adding water-centrifugal compound desalination process and data center
The cold energy utilization system of tune.
Specific embodiment
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.
Embodiment 1
A kind of utilization system of LNG cold energy is present embodiments provided, it is specific as shown in Figure 1;
The utilization system includes the LNG cold energy seawater desalination ice melting system being connected with each other and fresh water retention reservoir;Its
In, the LNG cold energy seawater desalination ice melting system includes secondary refrigerant cooler, the seawater using LNG cold energy being sequentially connected
Slice ice machine, gravity desalinization room, filtering type centrifugation desalter and dip tank;The water outlet of the dip tank and the fresh water
Reservoir is connected;Wherein, the secondary refrigerant cooler is panel cooler, setting natural gas channel and secondary cold in cooler
The outlet in matchmaker channel, the secondary refrigerant channel is connected with the seawater flake ice maker;The seawater flake ice maker is provided with seawater and enters
Mouthful;The seawater flake ice maker is connect behind gravity desalinization room with filtering type centrifugation desalter;Air conditioning water is cooling
The bypass of circulation line is passed through the gravity desalinization room to maintain room temperature (specific structure such as Fig. 2 of the gravity desalinization room
It is shown);The filtering type centrifugation desalter is connected with the dip tank;
The utilization system further includes the data center's air-conditioning system being connected with each other and air conditioner cold accumulation pond;
By the air conditioning water pipe the air conditioner cold accumulation pond, the air-conditioning freezing in the fresh water retention reservoir is first passed to
Water cooling coil, then the air conditioning water cooling coil in the LNG cold energy seawater desalination ice melting system dip tank is passed to, finally
The air conditioner cold accumulation pond is returned to, air conditioning water cooling cycle pipeline is formed;
The utilization system further includes electric refrigerating machine, as auxiliary cold source and the air conditioner cold accumulation pond and/or number
It is connected according to center air-conditioner system.
Embodiment 2
A kind of utilization system of LNG cold energy is present embodiments provided, it is specific as shown in Figure 3;Compared with Example 1,
Difference is only that: the filtering type centrifugation desalter is equipped with seawater inlet, and the seawater flake ice maker is directly equipped with sea with described
The filtering type centrifugation desalter connection of water inlet.
Embodiment 3
Present embodiments provide the method comprehensively utilized using the system of embodiment 1 or the offer of embodiment 2.
By taking the LNG of unit mass flow as an example: when the LNG stream amount for sea water desalination is 1t/h, the cooling capacity that is released
For 232.5kW.
When former ocean temperature is 25 DEG C, ice 1.9t/h can be produced.
Using freezing-gravity-centrifugal compound method for desalting seawater (i.e. the system of the offer of embodiment 1), work as Cl-Removal efficiency is
When 90.11%, desalination water yield is 0.722t/h;Work as Cl-When removal efficiency is 99.8%, desalination water yield is 0.055t/h.
Using freezing-plus water-centrifugal compound sea water desalination (i.e. embodiment 2 provide system), when add coolant-temperature gage to be 11 DEG C,
Cl-When removal efficiency is 90.4%, desalination water yield is 1.092t/h.
When air-conditioning system is used for data center's cooling supply from the cooling capacity of seawater desalination system recycling 70%, and data center is cold
Load is 1kW/m2, can be used as 162m2The cold source of data center's air-conditioning system.
Although above having used general explanation, specific embodiment and test data, the utility model has been made in detail
Most description, but on the basis of the utility model, it can be made some modifications or improvements, this is to those skilled in the art
It is obvious.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention belong to this
The claimed range of utility model.
Claims (10)
1. a kind of cold energy of liquefied natural gas utilization system, which is characterized in that the utilization system includes being connected with each other
LNG cold energy seawater desalination ice melting system and fresh water retention reservoir, further include the data center's air-conditioning system being connected with each other and air-conditioning
Water storage pool;
By the air conditioning water pipe the air conditioner cold accumulation pond, the air conditioning water first passed in the fresh water retention reservoir is cold
But coil pipe, then the air conditioning water cooling coil in the dip tank of the LNG cold energy seawater desalination ice melting system is passed to, finally return
The air conditioner cold accumulation pond is gone back to, air conditioning water cooling cycle pipeline is formed.
2. cold energy of liquefied natural gas utilization system according to claim 1, which is characterized in that the LNG cold energy sea
Water desalination ice melting system includes that the secondary refrigerant cooler, seawater flake ice maker, filtering type using LNG cold energy being sequentially connected are centrifuged
Desalter and dip tank;The water outlet of the dip tank is connected with the fresh water retention reservoir.
3. cold energy of liquefied natural gas utilization system according to claim 2, which is characterized in that the secondary refrigerant is cold
But device is panel cooler, setting natural gas channel and secondary refrigerant channel in cooler, the outlet in the secondary refrigerant channel
It is connected with the seawater flake ice maker.
4. cold energy of liquefied natural gas utilization system according to claim 2 or 3, which is characterized in that the seawater piece
Ice maker is provided with seawater inlet;The seawater flake ice maker connects behind gravity desalinization room with filtering type centrifugation desalter
It connects;The filtering type centrifugation desalter is connected with the dip tank.
5. cold energy of liquefied natural gas utilization system according to claim 4, which is characterized in that the air conditioning water
The bypass of cooling cycle pipeline is passed through in the gravity desalinization room.
6. cold energy of liquefied natural gas utilization system according to claim 2 or 3, which is characterized in that the seawater piece
Ice maker and filtering type centrifugation desalter are respectively arranged with seawater inlet;The seawater flake ice maker is directly provided with sea with described
The filtering type centrifugation desalter of water inlet is connected;The filtering type centrifugation desalter is connected with the dip tank.
7. cold energy of liquefied natural gas utilization system according to claim 4, which is characterized in that the LNG cold energy sea
Concentrated seawater recovery system is equipped in water desalination ice melting system;It is equipped with inside the concentrated seawater recovery system and inside dip tank
Former seawater cooling coil;
Seawater supply line successively via after the former seawater cooling coil in the concentrated seawater recovery system and dip tank with it is described
The seawater inlet of seawater flake ice maker is connected.
8. cold energy of liquefied natural gas utilization system according to claim 5, which is characterized in that the LNG cold energy sea
Concentrated seawater recovery system is equipped in water desalination ice melting system;It is equipped with inside the concentrated seawater recovery system and inside dip tank
Former seawater cooling coil;
Seawater supply line successively via after the former seawater cooling coil in the concentrated seawater recovery system and dip tank with it is described
The seawater inlet of seawater flake ice maker is connected.
9. cold energy of liquefied natural gas utilization system according to claim 6, which is characterized in that the LNG cold energy sea
Concentrated seawater recovery system is equipped in water desalination ice melting system;It is equipped with inside the concentrated seawater recovery system and inside dip tank
Former seawater cooling coil;
Seawater supply line successively via after the former seawater cooling coil in the concentrated seawater recovery system and dip tank with it is described
The seawater inlet of seawater flake ice maker is connected.
10. cold energy of liquefied natural gas utilization system according to claim 1, which is characterized in that the comprehensive utilization
System further includes electric refrigerating machine;
The electric refrigerating machine is connected as auxiliary cold source with the air conditioner cold accumulation pond and data center's air-conditioning system.
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