CN104728599B - The gasification system of the injection liquefied natural gas of a kind of Driven by Solar Energy and method thereof - Google Patents
The gasification system of the injection liquefied natural gas of a kind of Driven by Solar Energy and method thereof Download PDFInfo
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- CN104728599B CN104728599B CN201510131426.5A CN201510131426A CN104728599B CN 104728599 B CN104728599 B CN 104728599B CN 201510131426 A CN201510131426 A CN 201510131426A CN 104728599 B CN104728599 B CN 104728599B
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
Abstract
The present invention provides gasification system and the method thereof of the injection liquefied natural gas of a kind of Driven by Solar Energy, system includes solar energy heat-collecting heat-storage unit and injecting type liquefaction weather gasification unit, described solar energy heat-collecting heat-storage unit is connected with described injecting type liquefaction weather gasification unit respectively by First Heat Exchanger, the second heat exchanger, and described injecting type liquefaction weather gasification unit is connected to high-pressure gas pipeline.The solar energy of collection is directly used in driving injecting type liquefied natural gas gasifying by the gasification system of the present invention, has not only saved non-renewable fossil energy, has also improved the gasification rate of liquefied natural gas.
Description
Technical field
The present invention relates to liquefied natural gas field, be specifically related to the injection of a kind of Driven by Solar Energy
The gasification system of liquefied natural gas and method thereof.
Background technology
Economic fast development is necessarily accompanied with the consumption of the energy, and the reach of science inevitable requirement
The highest energy-saving horizontal (especially for the saving of non-renewable resources).China is as generation
Second largest production of energy state and country of consumption in boundary, need the substantial amounts of liquefied natural gas of import every year,
The gasification of liquefied natural gas relates to gas-liquid phase transition, and gas-liquid phase transition needs to consume substantial amounts of
Heat energy could be gasified and is heated to required fuel gas temperature.
The gasification process of liquefied natural gas mainly includes air temperature type, open-shelf, submerged combustion at present
Formula and with intermediate heat transfer media formula gasification process；Wherein:
(1) air temperature type gasification process is using air as heat source, owing to air side heat transfer is
Number is the lowest, and therefore heating load degree of amplitude modulation is smaller；
(2) open-shelf gasification process is to use sea water as thermal source, and heating load can carry out spirit
Live and regulate, but the microenvironment in sea water can be caused serious impact for a long time；
(3) submerged combustion gasification process is to use " the heated by natural gas water of combustion gasification, water
Reheat liquefied natural gas " mode liquefied natural gas is gasified, not only heating load can
Modulation is less, and needs the substantial amounts of natural gas that burns, and is unfavorable for energy-conservation；
(4) with intermediate heat transfer media formula gasification process be use sea water as heat source, should
The mode of kind must use complicated intermediate heat transfer media and system, and heating load adjusts complicated, unfavorable
In cost savings.
Summary of the invention
In view of this, the present invention provides the gasification spraying liquefied natural gas of a kind of Driven by Solar Energy
System and method, it is intended to for the energy consumption of non-renewable resources during saving natural gasification.
The technical solution used in the present invention particularly as follows:
The gasification system of the injection liquefied natural gas of a kind of Driven by Solar Energy, including solar energy heating
Heat storage units and injecting type liquefaction natural gasification unit, described solar energy heat-collecting heat-storage unit passes through
First Heat Exchanger, the second heat exchanger are connected with described injecting type liquefaction natural gasification unit respectively,
Described injecting type liquefaction natural gasification unit is connected to high-pressure gas pipeline.
In the gasification system of the injection liquefied natural gas of above-mentioned Driven by Solar Energy, described solar energy
Heat-collecting heat-storage unit includes heat storage can, solar thermal collector, First Heat Exchanger and the second heat exchanger,
Described heat storage can is connected with described solar thermal collector through high-temperature pump, described solar thermal collector
It is connected to described heat storage can successively through described First Heat Exchanger, described second heat exchanger.
In the gasification system of the injection liquefied natural gas of above-mentioned Driven by Solar Energy, also include first
Valve group, described first valve group include the first valve, the second valve, the 3rd valve, the 4th
Valve, the 5th valve and the 6th valve；Wherein: described first valve is located at described solar energy collection
First end of hot device, described second valve is located at the second end of described solar thermal collector, described
4th valve is located between described first valve and the second valve；Described second valve, described
Four valves are connected with described First Heat Exchanger through described 3rd valve respectively, described second valve,
Described 4th valve is connected to described heat storage can through described 5th valve the most respectively；Described second changes
Hot device is connected with described heat storage can through described 6th valve.
In the gasification system of the injection liquefied natural gas of above-mentioned Driven by Solar Energy, described injecting type
Liquefied natural gas unit includes that liquified natural gas tank, First Heat Exchanger, ejector and second are changed
Hot device, described liquified natural gas tank is connected with described First Heat Exchanger through liquefied natural gas pump,
Described First Heat Exchanger is connected with described second heat exchanger through described ejector, and described second changes
Hot device is connected to described high-pressure gas pipeline.
In the gasification system of the injection liquefied natural gas of above-mentioned Driven by Solar Energy, also include second
Valve group, described second valve group includes the 7th valve, described pressure maintaining valve and the 8th valve, institute
State the 7th valve to be located between described liquified natural gas tank and described liquefied natural gas pump, described
Eight valves are located between described liquified natural gas tank and described ejector, and institute is located at by described pressure maintaining valve
State between ejector and described liquified natural gas tank.
The gasification process of the injection liquefied natural gas of a kind of Driven by Solar Energy, is included in solar energy collection
Heat exchange step in hot heat storage units and the gasification step in injecting type liquefaction natural gasification unit
Suddenly, heat accumulation step is connected with gasification step respectively mutually by First Heat Exchanger, the second heat exchanger,
Natural gas after gasification step passes to high-pressure gas pipeline.
In the gasification process of the injection liquefied natural gas of above-mentioned Driven by Solar Energy, described heat exchange walks
Rapid particularly as follows:
Under the effect of high-temperature pump, the heat-conducting work medium in heat storage can enters solar energy through the first valve
Heating in heat collector, the heat-conducting work medium after heating enters the through the second valve, the 3rd valve successively
In one heat exchanger, the second heat exchanger, carrying out heat exchange with liquefied natural gas, through heat exchange, liquefy sky
So aspiration thermal transition is the gaseous natural gas of uniform temperature, and the heat-conducting work medium after heat release is through the 6th valve
Door returns heat storage can.
In the gasification process of the injection liquefied natural gas of above-mentioned Driven by Solar Energy, described heat exchange walks
Suddenly also include:
The heat absorbed when solar thermal collector needs more than First Heat Exchanger and the second heat exchanger
During heat summation, the 4th valve closing, by the regulation flow of high-temperature pump and opening of the 5th valve
Degree makes unnecessary heat be stored into heat storage can in the way of high-temperature heat-conductive working medium；
The heat absorbed when solar thermal collector needs less than or equal to First Heat Exchanger and the second heat exchanger
The heat summation wanted and time more than ultimate value, the 5th valve closing, by regulation high-temperature pump
Flow and the aperture of the 4th valve, make First Heat Exchanger and the second heat exchanger obtain respectively required
Heat；
When solar thermal collector absorb heat ultimate value and following time, close the first valve,
Second valve and the 5th valve, open the 4th valve, by regulating the flow of high-temperature pump, makes the
One heat exchanger and the second heat exchanger obtain required heat respectively.
In the gasification process of the injection liquefied natural gas of above-mentioned Driven by Solar Energy, described gasification step
Suddenly include:
Under the effect of liquefied natural gas pump, the liquefied natural gas in liquified natural gas tank is through the 7th
Valve enters heat exchange in First Heat Exchanger, is converted into high pressure superheater natural gas after heat exchange, and height presses through
Hot natural gas with from liquified natural gas tank, draw incoming low pressure liquefied natural gas through the 7th valve
Ejector pump mixes, forms high-pressure natural gas.
In the gasification process of the injection liquefied natural gas of above-mentioned Driven by Solar Energy, described gasification step
Suddenly also include:
The high-pressure natural gas being mixed to form is divided into two parts: a part of after the second heat exchanger heat exchange,
Sending into high-pressure gas pipeline after being heated to setting value, another part returns after pressure maintaining valve pressure regulation
Liquified natural gas tank.
The beneficial effect comprise that:
The gasification system of the injection liquefied natural gas of the Driven by Solar Energy of the present invention is by by discontinuous
Solar energy heating combine the sustainable stable heating achieving solar energy with heat storage can,
Realizing also to impact environment while liquefied natural gas stably gasifies, having saved can not
The natural gas resource of regeneration；
System uses ejector as the gasifier of liquefied natural gas, carries out directly in ejector
Contact mass-and heat-transfer, hence it is evident that improve the speed of gasifier, therefore the loss of heat from heat source obtains
To reduce；
The simple in construction of system, easy to process, low cost of manufacture, be not only suitable for small-sized skid-mounted type
Gas station, can also be used for the liquefied natural gas of big-and-middle-sized gas station.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, it is possible to be more completely more fully understood that the present invention.Described herein
Accompanying drawing be used for providing a further understanding of the present invention, embodiment and explanation thereof to be used for explain this
Invention, is not intended that inappropriate limitation of the present invention.
Fig. 1 is the knot of the gasification system of the injection liquefied natural gas of a kind of Driven by Solar Energy of the present invention
Structure schematic diagram.
In figure: 1, heat storage can 2, high-temperature pump the 3, first valve 4, solar thermal collector 5,
Second valve the 6, the 3rd valve 7, First Heat Exchanger the 8, second heat exchanger the 9, the 4th
Valve the 10, the 5th valve the 11, the 6th valve 12, liquified natural gas tank the 13, the 7th
Valve 14, liquefied natural gas pump 15, ejector 16, pressure maintaining valve the 17, the 8th valve.
Detailed description of the invention
Below in conjunction with the accompanying drawings and technical scheme is made further details of theory by embodiment
Bright.
The gasification system of the injection liquefied natural gas of a kind of Driven by Solar Energy as shown in Figure 1, bag
Include solar energy heat-collecting heat-storage unit and injecting type liquefaction natural gasification unit, solar energy heat-collecting heat-storage
Unit by First Heat Exchanger, the second heat exchanger 8 respectively with injecting type liquefy natural gasification unit
Being connected, injecting type liquefaction natural gasification unit is connected to high-pressure gas pipeline；Wherein:
Solar energy heat-collecting heat-storage unit mainly includes heat storage can 1, solar thermal collector 4, first changes
Hot device the 7, second heat exchanger the 8, first valve group and corresponding pipeline, the first valve group includes
First valve the 3, second valve 5, the 3rd valve 6, the 4th valve 9, the 5th valve 10 and
Six valves 11；Heat storage can 1 is connected with solar thermal collector 4 through high-temperature pump 2, solar energy collection
Hot device 4 is connected to heat storage can 1 through First Heat Exchanger the 7, second heat exchanger 8 successively；First valve
In group:
First valve 3 is located at the first end of solar thermal collector 4, and the second valve 5 is located at the sun
Second end of energy heat collector 4, the 4th valve 9 is located between the first valve 3 and the second valve 5；
Second valve the 5, the 4th valve 9 is connected with First Heat Exchanger 7 through the 3rd valve 6 respectively, the
Two valve the 5, the 4th valves 9 are connected to heat storage can 1 through the 5th valve 10 the most respectively；Second changes
Hot device 8 is connected with heat storage can 1 through the 6th valve 11.
Injecting type liquefaction natural gasification unit mainly includes liquified natural gas tank 12, First Heat Exchanger
7, ejector the 15, second heat exchanger 8 and the second valve group and corresponding pipeline, the second valve
Group includes the 7th valve 13, pressure maintaining valve 16 and the 8th valve 17, and liquified natural gas tank 12 is through liquid
Change natural gas pump 14 to be connected with First Heat Exchanger 7, First Heat Exchanger 7 through ejector 15 and
Second heat exchanger 8 is connected, and the second heat exchanger 8 is connected to high-pressure gas pipeline；
In second valve group:
7th valve 13 is located between liquified natural gas tank 12 and liquefied natural gas pump 14, and the 8th
Valve 17 is located between liquified natural gas tank 12 and ejector 15, and injection is located at by pressure maintaining valve 16
Between device 15 and liquified natural gas tank 12.
In the gasification system of the injection liquefied natural gas of above-mentioned Driven by Solar Energy, solar energy heating is stored up
The workflow of hot cell and injecting type liquefaction natural gasification unit is respectively as follows:
The workflow of solar energy heat-collecting heat-storage unit:
Conduction oil in heat storage can 1 enters too through the first valve 3 under the effect of high-temperature pump 2
Sun can be heated to 320 DEG C in heat collector 4, is then passed through the second valve 5 and the 3rd valve 6
Entering the extremely gasification of First Heat Exchanger 7 heats liquefied natural gas, gaseous natural gas temperature reaches
300 DEG C, the natural gas after then conduction oil enters the second heat exchanger 8 heating and gasifying, temperature reduces
Conduction oil after less than 100 DEG C returns heat storage can 1 through the 6th valve 11.When solar energy collection
During the total amount of heat that the heat that hot device 4 absorbs needs more than First Heat Exchanger 7 and the second heat exchanger 8,
Close the 4th valve 9, the aperture of regulation the 5th valve 10, make unnecessary heat with high-temperature heat-conductive
The mode of oil is stored into heat storage can 1.The heat absorbed when solar thermal collector 4 is less than the first heat exchange
During the total amount of heat that device 7 and the second heat exchanger 8 need, close the 5th valve 10, regulate the 4th valve
The aperture of door 9, the flow of regulation high-temperature pump 2, make First Heat Exchanger 7 and the second heat exchanger 8
Obtain the total amount of heat needed, when the heat that solar thermal collector 4 absorbs is close to zero, cut off the
One valve the 3, second valve 5 and the 5th valve 10, the flow of regulation high-temperature pump 2, make first
Heat exchanger 7 and the second heat exchanger 8 obtain the total amount of heat needed.
The workflow of injecting type liquefaction natural gasification unit:
Liquefied natural gas in liquified natural gas tank 12 is warp under the effect of liquefied natural gas pump 14
Cross the 7th valve 13 and liquefied natural gas pump 14 enters in First Heat Exchanger 7 and gasifies, is superheated to
Temperature 280-300 DEG C, more than pressure 5.0MPa, become high pressure superheater natural gas, then high pressure
Overheated natural gas enters in ejector pump 15 and sprays, and draws incoming low-pressure liquefied from the 7th valve
Natural gas carries out contact heat transfer mass transfer and becomes high-pressure natural gas, and then major part high-pressure natural gas enters
Enter the second heat exchanger 8 and be heated to more than 0 DEG C feeding high-pressure gas pipeline, another fraction high pressure
Natural gas returns liquified natural gas tank 12 after pressure maintaining valve 16 pressure regulation, keeps liquified natural gas tank
Pressure stability in 12.
The High Temperature High Pressure prevention of natural gas ejected obtained by First Heat Exchanger 7 heating is from the 8th valve 17 mistake
The low-temp low-pressure liquefied natural gas come, carries out mixing at ejector, heat and mass, forms high temperature
High-pressure gaseous natural gas.According to the method, the gasification rate of liquefied natural gas can improve 10%
Above, and completely use solar energy as thermal source, system working stability.
As a kind of preferred embodiment, the heat-transfer working medium in solar energy heat-collecting heat-storage unit is selected and is led
Deep fat, solar thermal collector 4 uses trough type solar heat-collector, First Heat Exchanger 7 to use shell
Pipe heat exchanger, the second heat exchanger 8 uses plate type heat exchanger.
As it has been described above, embodiments of the invention are explained, it is clear that if real
In matter without departing from the inventive point of the present invention and effect, be aobvious to one skilled in the art
And the deformation being clear to, within being also all contained in protection scope of the present invention.
Claims (9)
1. the gasification system of the injection liquefied natural gas of a Driven by Solar Energy, it is characterised in that
Including solar energy heat-collecting heat-storage unit and injecting type liquefaction natural gasification unit, described solar energy collection
Hot heat storage units is natural with the liquefaction of described injecting type respectively by First Heat Exchanger, the second heat exchanger
Gasification unit is connected, and described injecting type liquefaction natural gasification unit is connected to high-pressure gas pipeline；
Described solar energy heat-collecting heat-storage unit includes heat storage can, solar thermal collector, the first heat exchange
Device and the second heat exchanger, described heat storage can is connected with described solar thermal collector through high-temperature pump,
Described solar thermal collector is connected to institute through described First Heat Exchanger, described second heat exchanger successively
State heat storage can.
The gasification of the injection liquefied natural gas of Driven by Solar Energy the most according to claim 1
System, it is characterised in that also include that the first valve group, described first valve group include the first valve
Door, the second valve, the 3rd valve, the 4th valve, the 5th valve and the 6th valve；Wherein:
Described first valve is located at the first end of described solar thermal collector, and described second valve sets
In the second end of described solar thermal collector, described 4th valve is located at described first valve and
Between two valves；
Described second valve, described 4th valve change with described first through described 3rd valve respectively
Hot device is connected, and described second valve, described 4th valve are the most respectively through described 5th valve the most even
It is connected to described heat storage can；
Described second heat exchanger is connected with described heat storage can through described 6th valve.
The gasification of the injection liquefied natural gas of Driven by Solar Energy the most according to claim 1
System, it is characterised in that described injecting type liquefaction natural gasification unit include liquified natural gas tank,
First Heat Exchanger, ejector and the second heat exchanger, described liquified natural gas tank is through liquefied natural gas
Pump is connected with described First Heat Exchanger, and described First Heat Exchanger is through described ejector and described the
Two heat exchangers are connected, and described second heat exchanger is connected to described high-pressure gas pipeline.
The gasification of the injection liquefied natural gas of Driven by Solar Energy the most according to claim 3
System, it is characterised in that also include that the second valve group, described second valve group include the 7th valve
Door, pressure maintaining valve and the 8th valve；Wherein: described 7th valve is located at described liquified natural gas tank
With between described liquefied natural gas pump, described 8th valve is located at described liquified natural gas tank and institute
Stating between ejector, described pressure maintaining valve is located between described ejector and described liquified natural gas tank.
5. the gasification process of the injection liquefied natural gas of a Driven by Solar Energy, it is characterised in that
It is included in the heat exchange step in solar energy heat-collecting heat-storage unit and in injecting type liquefaction natural gasification
Gasification step in unit, heat accumulation step by First Heat Exchanger, the second heat exchanger respectively with gas
Changing step to be connected mutually, the natural gas after gasification step passes to high-pressure gas pipeline.
The gasification of the injection liquefied natural gas of Driven by Solar Energy the most according to claim 5
Method, it is characterised in that described heat exchange step particularly as follows:
Under the effect of high-temperature pump, the heat-conducting work medium in heat storage can enters solar energy through the first valve
Heating in heat collector, the heat-conducting work medium after heating enters the through the second valve, the 3rd valve successively
In one heat exchanger, the second heat exchanger, carrying out heat exchange with liquefied natural gas, through heat exchange, liquefy sky
So aspiration thermal transition is the gaseous natural gas of uniform temperature, and the heat-conducting work medium after heat release is through the 6th valve
Door returns heat storage can.
The gasification of the injection liquefied natural gas of Driven by Solar Energy the most according to claim 6
Method, it is characterised in that described heat exchange step also includes:
The heat absorbed when solar thermal collector needs more than First Heat Exchanger and the second heat exchanger
Heat summation time, the 4th valve closing, by the regulation flow of high-temperature pump and the 5th valve
Aperture makes unnecessary heat be stored into heat storage can in the way of high-temperature heat-conductive working medium；
The heat absorbed when solar thermal collector is less than or equal to First Heat Exchanger and the second heat exchanger
The heat summation that needs and time more than ultimate value, the 5th valve closing, by regulation high-temperature pump
Flow and the aperture of the 4th valve, make First Heat Exchanger and the second heat exchanger obtain respectively required
The heat wanted；
When solar thermal collector absorb heat ultimate value and following time, close the first valve,
Second valve and the 5th valve, open the 4th valve, by regulating the flow of high-temperature pump, makes the
One heat exchanger and the second heat exchanger obtain required heat respectively.
The gasification of the injection liquefied natural gas of Driven by Solar Energy the most according to claim 5
Method, it is characterised in that described gasification step includes:
Under the effect of liquefied natural gas pump, the liquefied natural gas in liquified natural gas tank is through the 7th
Valve enters heat exchange in First Heat Exchanger, is converted into high pressure superheater natural gas after heat exchange, and height presses through
Hot natural gas with from liquified natural gas tank, draw incoming low pressure liquefied natural gas through the 7th valve
Ejector pump mixes, forms high-pressure natural gas.
The gasification of the injection liquefied natural gas of Driven by Solar Energy the most according to claim 8
Method, it is characterised in that described gasification step also includes:
The high-pressure natural gas being mixed to form is divided into two parts: a part of after the second heat exchanger heat exchange,
Sending into high-pressure gas pipeline after being heated to setting value, another part returns after pressure maintaining valve pressure regulation
Liquified natural gas tank.
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| CN101871440A (en) * | 2010-06-13 | 2010-10-27 | 上海交通大学 | Solar energy-natural gas complementary injection type distributed combined cold heat and power supply device |
| CN202327641U (en) * | 2011-11-30 | 2012-07-11 | 华北电力大学（保定） | Liquefied petroleum gas gasification system based on direct expansion type solar energy heat pump |
| CN102748254A (en) * | 2012-07-11 | 2012-10-24 | 李建 | Natural gas differential pressure generating transforming machine set based on solar heating and implementation method thereof |
| CN103485851A (en) * | 2013-08-13 | 2014-01-01 | 中国寰球工程公司辽宁分公司 | Method and device for generating power by using liquefied natural gas cold energy and solar energy as power source |
| CN103486438B (en) * | 2013-09-18 | 2015-06-03 | 华南理工大学 | LNG gasification system based on double-heat-source heat pump |
| CN204573576U (en) * | 2015-03-24 | 2015-08-19 | 北京建筑大学 | A kind of gasification system of steam ejection liquefaction rock gas of Driven by Solar Energy |
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Effective date of registration: 20170204 Address after: 100052 Beijing, Xuanwu, a number of street outside the door on the ground floor, layer 1001, No. 1, No. 1002, No. 10, No. Patentee after: Beijing Younaite Gas Engineering Technology Co., Ltd. Address before: 1 Xicheng District Exhibition Road, Beijing, No. 100044 Patentee before: Beijing University of Civil Engineering and Architecture |