CN209053716U - A kind of waste heat of LNG Power Vessel and cold energy utilization system - Google Patents
A kind of waste heat of LNG Power Vessel and cold energy utilization system Download PDFInfo
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- CN209053716U CN209053716U CN201821483733.5U CN201821483733U CN209053716U CN 209053716 U CN209053716 U CN 209053716U CN 201821483733 U CN201821483733 U CN 201821483733U CN 209053716 U CN209053716 U CN 209053716U
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- waste heat
- cold energy
- lng
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- ethylene glycol
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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
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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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]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The utility model relates to field of new energy technologies, utilize part and LNG cold energy use part more particularly, to the waste heat and cold energy utilization system of a kind of LNG Power Vessel, including waste heat from tail gas.Lithium bromide-water absorption type system that waste heat from tail gas utilizes part to be driven by ship tail gas waste heat, makes its flash distillation by condenser come heating seawater, and undertake most refrigeration duty with evaporator, allows the water vapour of flash distillation to condense rapidly and obtain fresh water;Cold energy recovery portion uses 60% ethylene glycol solution cold-storage, and ethylene glycol solution is by a main road followed by Freezing room, high temperature library, air-conditioning system and water vapour coagulator.Freezing room, high temperature library, air-conditioning system adjust flow according to load each by branch road valve, and then stablize the cascade utilization for realizing cold energy.The utility model is realizing the rigid need for also solving ship fresh water, freezer, air-conditioning while energy-saving and emission-reduction by the comprehensive utilization to part ship tail gas waste heat and LNG cold energy.
Description
Technical field
The utility model relates to field of new energy technologies, comprehensive more particularly, to the waste heat and cold energy of a kind of LNG Power Vessel
Close the system of utilizing.
Background technique
Stringenter discharge standard is carried out in the year two thousand twenty as International Maritime Organization determines, liquefied natural gas (LNG) is made
Become the optimal selection of the following marine fuel for environment-friendly fuel.It burns since LNG needs just send after gasifying to marine main engine,
The cold energy that 830 ~ 860 kJ/kg can be released in its gasification generallys use ship boiler steam or jacket water as heat source
LNG is heated, causes the unnecessary waste of the energy.In existing research, has the cascade utilization that scholar proposes LNG cold energy
This scheme, but the utilization of low-grade cold energy is still insufficient on the Land use systems to cold energy.In the utilization of ship tail gas waste heat
On, the mode that currently existing scheme mostly uses greatly waste heat boiler to recycle as waste heat, but such mode is to the benefit compared with low grade heat energy
With being still lacking, exhaust temperature is higher after waste heat boiler, and direct emission is not only the waste to thermal energy, can also make
At certain thermal pollution.
The utilization of the waste heat for LNG Power Vessel and cold energy is still insufficient at present, in contrast, fresh water,
Freezer, air-conditioning etc. are that ship is indispensable.The utility model is used for seawater distilling by the recycling to waste heat from tail gas, in conjunction with
The utilization of LNG cold energy solves the demand of fresh water peculiar to vessel, freezer, air-conditioning.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, a kind of LNG Power Vessel waste heat and cold energy are provided
Utilization system can solve the needs of problems of LNG Power Vessel fresh water, freezer and air-conditioning.
In order to solve the above technical problems, the technical solution adopted in the utility model is:
The utilization system of a kind of LNG Power Vessel waste heat and cold energy is provided, including waste heat from tail gas utilizes part and LNG cold
Part can be utilized, the waste heat from tail gas utilizes part, successively by generator lateral exit, condenser, seawater preheating device, refrigerant
Storage tank, restricting element and evaporator are connected and composed by pipe;LNG cold energy use part, LNG storage tank pass through valve and LNG-
Ethylene glycol solution heat exchanger is connected, and partition is equipped in ethylene glycol solution liquid storing barrel, built-in solution is divided into cold and hot end, institute
The hot end for stating ethylene glycol solution liquid storing barrel is connect with the LNG- ethylene glycol solution heat exchanger by solution pump, the ethylene glycol
The cold end of solution liquid storing barrel by solution circulation pump by a main road successively with Freezing room, high temperature library, air-conditioning system cold source and water
Vapour coagulator is connected.
In order to allow waste heat from tail gas using being partially able to carry out heat exchange circulation, absorber, weak solution storage tank, weak solution pump,
Solution heat exchanger passes sequentially through pipe with the generator inner nozzle and is connected, the generator outlet at bottom, solution heat
Exchanger is connected with concentrated solution storage tank by pipe, and the concentrated solution storage tank is connect by valve with the absorber inner nozzle,
The absorber is connected with the evaporator outlet.
In order to allow the utility model can by seawater introduce and make it is light, seawater filter, sea water pump, the absorber and
The seawater preheating device passes sequentially through pipe connection, and the seawater preheating device other end is connected with nozzle, and the nozzle is placed in described
Above condenser.
In order to improve the heat exchanger effectiveness, increase energy utilization rate of the utility model, the evaporator, the condenser with
The water vapour coagulator is both placed in vacuum tank, partition is equipped with inside the vacuum tank, the condenser is in the partition one
Side, the water vapour coagulator and the evaporator are in the partition other side.
In order to make to arrange between each connecting component rationally outside vacuum tank described in the utility model, vacuum pump is connected to described
Evaporator, the water vapour coagulator side the vacuum tank lid on;The vacuum tank is equipped with concentrated seawater in the condenser side
Outlet, the vacuum tank are equipped with water outlet in the evaporator, the water vapour coagulator side, and fresh-water tank is connected by water pump
The water outlet;Safety valve is provided on the vacuum tank.
In order to improve the acting ability of working medium, the water vapour coagulator is coiled pipe structure;The evaporator with it is described cold
Condenser is the coil arrangement of wall-type heat exchange, and the coil pipe leading portion of the condenser uses tapered form.
In order to make seawater preheating device less scaling and leakage, the seawater preheating device uses shell-and-tube heat exchanger.
In order to allow LNG cold energy use part can stablize realize cold energy cascade utilization, the Freezing room, the high temperature library with
Each branch of air-conditioning system cold source is equipped with valve, can select the opening and closing of valve, according to load to adjust flow.
In order to make the freezing point of refrigerating medium be suitble to the utility model, the ethylene glycol solution liquid storing barrel is molten using 60% ethylene glycol
Liquid is as cool storage medium.
Compared with prior art, the utility model has the beneficial effects that
A kind of utilization system of LNG Power Vessel waste heat and cold energy of the utility model, using lithium bromide-water absorption type
System is for recovery section waste heat from tail gas and is used to utilize LNG cold energy using ethylene glycol solution, takes full advantage of waste heat and cold energy,
Meets the needs of ship is to fresh water, freezer, air-conditioning on the basis of energy-saving and emission-reduction;Condenser heat rejection is flashed for heating seawater,
Evaporator and water vapour coagulator heat absorption keep flash-steam condensation system light, improve the utilization rate of waste heat from tail gas;The utility model
In seawater preheating device, allow water as refrigerant realize supercooling while preheated seawater;In cold energy use, ethylene glycol liquid storing barrel is used
Partition is classified as cold and hot end, while improving system stability, enhances heat transfer effect, improves the product of cold energy
Position;Waste heat is recycled by water vapour coagulator and is combined with cold energy cascade utilization, provides one for the utilization of the low-grade cold energy of LNG
The new thinking of kind.
Detailed description of the invention
Fig. 1 is the systematic schematic diagram of the utility model.
Fig. 2 is the lithium bromide-water absorption type heat pump system composition schematic diagram of the utility model.
Fig. 3 is the shaft side figure of the water vapour coagulator of the utility model, evaporator and condenser.
It is as follows to illustrate description of symbols:
1-LNG storage tank, 2-LNG- ethylene glycol solution heat exchanger, 3- ethylene glycol solution liquid storing barrel, 4- solution pump, 5- solution
Circulating pump, 6- Freezing room, 7- high temperature library, 8- air-conditioning system cold source, 9- water vapour coagulator, 10- generator, 11- condenser, 12-
Refrigerant storage tank, 13- restricting element, 14- evaporator, 15- absorber, 16- weak solution storage tank, 17- weak solution pump, 18- solution
Heat exchanger, 19- concentrated solution storage tank, 20- seawater filter, 21- sea water pump, 22- seawater preheating device, 23- safety valve, 24- are true
Sky pump, 25- vacuum tank, 26- fresh-water tank.
Specific embodiment
The utility model is further described With reference to embodiment.Wherein, being given for example only property of attached drawing
Illustrate, expression is only schematic diagram, rather than pictorial diagram, should not be understood as the limitation to this patent;In order to which this reality is better described
With novel embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent the size of actual product;To ability
For field technique personnel, the omitting of some known structures and their instructions in the attached drawings are understandable.
The same or similar label correspond to the same or similar components in the attached drawing of the utility model embodiment;It is practical at this
In novel description, it is to be understood that if the orientation or positional relationship for having the instructions such as term " on ", "lower", "left", "right" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore retouch in attached drawing
The term for stating positional relationship only for illustration, should not be understood as the limitation to this patent, for the common skill of this field
For art personnel, the concrete meaning of above-mentioned term can be understood as the case may be.
As shown in Figure 1, a kind of waste heat of LNG Power Vessel of the utility model and cold energy utilization system, including more than tail gas
Heat utilization part and LNG cold energy use part, waste heat from tail gas are classified into lithium bromide-water absorption type using the working principle of part
Heat pump system the circulation path is illustrated with seawater circulation road, and the working principle of LNG cold energy use part follows spent glycol solution
Loop is illustrated.
Lithium bromide-water absorption type heat pump system the circulation path: the lithium-bromide solution in tail gas heating generator 10 is waiting it
Pressure, which comes to life, generates superheated vapour, while solution concentration rises;Superheated vapour enters condenser 11, in heating seawater
While, first cooling condenses overheat cryogen water vapour again;Condensator outlet water as refrigerant is further cooled to through seawater preheating device 22
Subcooled liquid flows into vacuum tank 12, and water as refrigerant throttles through restricting element 13 in storage tank, and it is right to be down to evaporating temperature institute for pressure after throttling
The evaporating pressure answered.Most of flash-steam condenses cooling heat release on evaporator 14 and generates fresh water, while cryogen water evaporation
Continually take away the heat that condensation is released.Cryogen water vapour is constantly absorbed the absorption of device 15, and the heat fraction of releasing is used for
Pre- hot sea water, most of cooled water are taken away;Intermediate solution, which constantly absorbs water vapour, in absorber 15 drops to solution concentration
ωaInto weak solution storage tank 16;Weak solution pump 17 by weak solution force (forcing) pump in weak solution storage tank 16 to solution heat exchanger 18, it is dilute
After solution temperature rises, make part water shwoot through nozzle spray in generator.10 outlet at bottom concentrated solution of generator is at itself
18 heat dilute solution of solution heat exchanger is flow under the action of pressure and pressure difference, while the decline of concentrated solution temperature flows into concentrated solution storage
Tank 19.Concentrated solution enters absorber 15 and mixes with part weak solution, forms intermediate solution, the effect then pumped in absorber 15
Under equably spray the tube bundle outer surface in absorber 15, continually absorb come flash-pot 14 water vapour.
Seawater circulation road: seawater is preheated through seawater filter 20, sea water pump 21 into absorber 15, then passes through seawater
The water as refrigerant that preheater 22 is exported with condenser 11 exchanges heat, on the one hand, further increases the temperature of seawater, another party
Face allows water as refrigerant to be subcooled to improve the cooling capacity of the generation of evaporator 14, is sprayed to vacuum by nozzle by the seawater preheated twice
25 inner condenser of tank, 11 surface, the continuous heating seawater of condenser are constantly be generated water vapour by its flash distillation in a steady stream, residual concentration compared with
High seawater is discharged by concentrated seawater outlet.Water vapour adds in 9 surface condensation Cheng Shui of evaporator 14 and water vapour coagulator through pump
Fresh-water tank 26 is flowed into after pressure.
Ethylene glycol solution the circulation path: liquefied natural gas be changed by liquid it is gaseous during release it is a large amount of cold
Can, it allows ethylene glycol solution to absorb this part cold energy by LNG- ethylene glycol solution heat exchanger 2 and returns to ethylene glycol solution liquid storing barrel 3
Cold end;The ethylene glycol solution of low temperature is successively pumped to Freezing room 6, high temperature library 7, air-conditioning system cold source 8 by solution circulation pump 5
It is more accurate by valve and flexible modulation each section flow is to adapt to load variations with water vapour coagulator 9;Ethylene glycol solution according to
During secondary process Freezing room 6, high temperature library 7, air-conditioning system cold source 8 and water vapour coagulator 9, temperature is gradually increasing, thus real
The cascade utilization of LNG cold energy is showed.
Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in
Within the protection scope of the utility model claims.
Claims (9)
1. a kind of waste heat of LNG Power Vessel and cold energy utilization system, including waste heat from tail gas utilize part and LNG cold energy use
Part, which is characterized in that the waste heat from tail gas utilizes part, successively by generator (10) lateral exit, condenser (11), seawater
Preheater (22), refrigerant storage tank (12), restricting element (13) and evaporator (14) are connected and composed by pipe;The LNG cold energy
Using part, LNG storage tank (1) is connected by valve with LNG- ethylene glycol solution heat exchanger (2), ethylene glycol solution liquid storing barrel
(3) be equipped with partition in, built-in solution be divided into cold and hot end, the hot end of the ethylene glycol solution liquid storing barrel (3) with it is described
LNG- ethylene glycol solution heat exchanger (2) is connected by solution pump (4), and the cold end of the ethylene glycol solution liquid storing barrel (3) passes through
Solution circulation pump (5) by a main road successively with Freezing room (6), high temperature library (7), air-conditioning system cold source (8) and water vapour coagulator
(9) it is connected.
2. a kind of waste heat of LNG Power Vessel according to claim 1 and cold energy utilization system, which is characterized in that institute
Waste heat from tail gas is stated using part, absorber (15), weak solution storage tank (16), weak solution pump (17), solution heat exchanger (18) and
Generator (10) inner nozzle passes sequentially through pipe and is connected, generator (10) outlet at bottom, the solution heat exchanger
(18) it is connected with concentrated solution storage tank (19) by pipe, the concentrated solution storage tank (19) passes through in valve and the absorber (15)
Nozzle connection, the absorber (15) are connected with the evaporator (14) outlet.
3. a kind of waste heat of LNG Power Vessel according to claim 2 and cold energy utilization system, which is characterized in that sea
Water filter (20), sea water pump (21), the absorber (15) pass sequentially through pipe with the seawater preheating device (22) and connect, described
Seawater preheating device (22) other end is connected with nozzle, and the nozzle is placed in above the condenser (11).
4. a kind of waste heat of LNG Power Vessel according to claim 1 and cold energy utilization system, which is characterized in that institute
It states evaporator (14), the condenser (11) and the water vapour coagulator (9) to be both placed in vacuum tank (25), the vacuum tank
(25) internal to be equipped with partition, the condenser (11) is in the partition side, the water vapour coagulator (9) and the evaporator
(14) in the partition other side.
5. a kind of waste heat of LNG Power Vessel according to claim 4 and cold energy utilization system, which is characterized in that true
Sky pump (24) be connected to the evaporator (14), the water vapour coagulator (9) side the vacuum tank (25) lid on;It is described true
Slack tank (25) is equipped with concentrated seawater outlet in the condenser (11) side, and the vacuum tank (25) is in the evaporator (14), institute
Water vapour coagulator (9) side is stated equipped with water outlet, fresh-water tank (26) connects the water outlet by water pump;The vacuum tank
(25) safety valve (23) are provided on.
6. a kind of waste heat of LNG Power Vessel according to claim 1 and cold energy utilization system, which is characterized in that institute
Stating water vapour coagulator (9) is coiled pipe structure;The evaporator (14) and the condenser (11) are the coil pipe of wall-type heat exchange
The coil pipe leading portion of structure, the condenser (11) uses tapered form.
7. a kind of waste heat of LNG Power Vessel according to claim 1 and cold energy utilization system, which is characterized in that institute
Seawater preheating device (22) are stated using shell-and-tube heat exchanger.
8. a kind of waste heat of LNG Power Vessel according to claim 1 and cold energy utilization system, which is characterized in that institute
It states Freezing room (6), the high temperature library (7) and each branch of the air-conditioning system cold source (8) and is equipped with valve.
9. a kind of waste heat of LNG Power Vessel according to claim 1 and cold energy utilization system, which is characterized in that institute
Ethylene glycol solution liquid storing barrel (3) are stated using 60% ethylene glycol solution as cool storage medium.
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CN201821483733.5U CN209053716U (en) | 2018-09-11 | 2018-09-11 | A kind of waste heat of LNG Power Vessel and cold energy utilization system |
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CN201821483733.5U CN209053716U (en) | 2018-09-11 | 2018-09-11 | A kind of waste heat of LNG Power Vessel and cold energy utilization system |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110285636A (en) * | 2019-07-17 | 2019-09-27 | 西安热工研究院有限公司 | A kind of simultaneous cold supply system of LNG cold energy and waste heat boiler utilizing waste heat for refrigeration |
CN111874200A (en) * | 2020-07-07 | 2020-11-03 | 武汉理工大学 | LNG ship heat energy comprehensive utilization system |
CN112145314A (en) * | 2020-09-23 | 2020-12-29 | 湖南金航船舶制造有限公司 | Waste heat utilization device of LNG internal combustion power ship |
-
2018
- 2018-09-11 CN CN201821483733.5U patent/CN209053716U/en active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110285636A (en) * | 2019-07-17 | 2019-09-27 | 西安热工研究院有限公司 | A kind of simultaneous cold supply system of LNG cold energy and waste heat boiler utilizing waste heat for refrigeration |
CN111874200A (en) * | 2020-07-07 | 2020-11-03 | 武汉理工大学 | LNG ship heat energy comprehensive utilization system |
CN112145314A (en) * | 2020-09-23 | 2020-12-29 | 湖南金航船舶制造有限公司 | Waste heat utilization device of LNG internal combustion power ship |
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