CN110417301A - A kind of LNG cold energy thermo-electric generation system based on seawater vaporizer - Google Patents
A kind of LNG cold energy thermo-electric generation system based on seawater vaporizer Download PDFInfo
- Publication number
- CN110417301A CN110417301A CN201910807235.4A CN201910807235A CN110417301A CN 110417301 A CN110417301 A CN 110417301A CN 201910807235 A CN201910807235 A CN 201910807235A CN 110417301 A CN110417301 A CN 110417301A
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- Prior art keywords
- lng
- heating surface
- seawater
- surface bank
- bank
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- 239000013535 sea water Substances 0.000 title claims abstract description 56
- 239000006200 vaporizer Substances 0.000 title claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 238000005507 spraying Methods 0.000 claims abstract description 15
- 239000007921 spray Substances 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 8
- 239000003345 natural gas Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 238000002309 gasification Methods 0.000 abstract description 17
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 239000003949 liquefied natural gas Substances 0.000 description 71
- 238000000034 method Methods 0.000 description 8
- 239000012530 fluid Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention relates to a kind of LNG cold energy thermo-electric generation system based on seawater vaporizer, including LNG inlet tube, gas outlet pipe, sea intake pipe, seawater spraying device, electrothermal module, heating surface bank and temperature-uniforming plate, the heating surface bank bottom is connected with LNG inlet tube, and gas outlet pipe is connected at the top of heating surface bank；The multiple electrothermal modules of outer surface paving of heating surface bank integral planar are laid with temperature-uniforming plate in the outer surface of multiple electrothermal modules；Heating surface bank top and be located at gas outlet pipe lower section at left and right sides of be provided with seawater spraying device, each seawater spraying device is connected with sea intake pipe, and the spray end of seawater spraying device is towards heating surface bank.The present invention combines seawater vaporizer with electrothermal module, the thermo-electric generation of cold energy can be realized while not influencing LNG and normally gasifying, it is easy to maintain, generating efficiency with higher, and it can effectively alleviate the ice formation issues that vapor lamp during LNG gasification shows, while being suitable for the fluctuation of LNG stream amount.
Description
Technical field
The present invention relates to the thermo-electric generation fields that LNG cold energy recycle combines, and in particular to one kind is based on seawater gas
Change the LNG cold energy thermo-electric generation system of device.
Background technique
With the increasingly serious environmental problems and the enhancing of people's energy conservation and environmental awareness, natural gas is as a kind of cleaning energy
Source is widely used in national production and living.Liquefied natural gas (LNG) is due to high, the storage and transportation side with energy density
Just the advantages that, it has also become the seaborne Main Patterns of natural gas.In LNG receiving station, temperature be -162 DEG C of LNG need by
Gasification can just be transported to user's use.During LNG gasification, LNG per ton will release the cold energy of about 830-860MJ.It passes
The gasification process of system directly passes through seawater vaporizer or air-blown gasifier and the cold energy discharged during LNG gasification is discharged into sea
In water or air, environment not only polluted, but also cause great cold energy waste.
At LNG gasification station, the utilization mode of LNG mainly includes direct utilization and cold energy generation, and cold energy generation is due to industry
Chain is short, is not influenced by the market factor, it has also become important cold energy use mode.For example, in Publication No. CN109356680A
State's patent discloses a kind of Rankine cycle electricity generation system with thermo-electric generation heat exchanger using LNG cold energy, by LNG by having
Remaining cooling capacity after machine Rankine cycle condenser is also utilized, and when using equivalent LNG, generated energy is compared traditional Rankine and followed
Ring electricity generation system is higher.The Chinese patent of Publication No. CN109098809A discloses a kind of cold using LNG with extraction cycle
LNG gasification can be made full use of to discharge in the process by three fluid heat exchangers and regenerator with the ORC electricity generation system of industrial waste heat
Cold energy effectively improves the efficiency of ORC electricity generation system.Although these methods can recycle LNG cold energy, structure is needed
Power circulation system is built, system equipment is complicated, and cost input is high, and equipment operation maintenance is inconvenient, restricts its application.
Summary of the invention
It the purpose of the invention is to high-efficient simple recycles the cold energy that LNG gasification process releases to generate electricity, together
When avoid having an impact LNG gasification process, propose a kind of LNG cold energy thermo-electric generation system based on seawater vaporizer, should
System combines LNG seawater vaporizer with electrothermal module, and the recycling power generation of LNG cold energy can be realized during LNG gasification,
The energy utilization efficiency of LNG is improved, structure is simple, stable, maintenance cost is low, generating efficiency is high.
To achieve the above object, the technical solution used in the present invention is:
The present invention provides a kind of LNG cold energy thermo-electric generation system based on seawater vaporizer, including LNG inlet tube, day
Right gas outlet, sea intake pipe, seawater spraying device, which is characterized in that the system further includes electrothermal module, heating surface bank and
Warm plate, the heating surface bank bottom are connected with LNG inlet tube, and gas outlet pipe is connected at the top of heating surface bank；Heating surface bank is whole
The multiple electrothermal modules of outer surface paving of body plane are laid with temperature-uniforming plate in the outer surface of multiple electrothermal modules；In heating surface bank
Top and be located at left and right sides of the lower section of gas outlet pipe and be provided with seawater spraying device, each seawater spraying device with sea
Water inlet pipe is connected, and the spray end of seawater spraying device is towards heating surface bank.
The electrothermal module and heating surface bank of LNG cold energy thermo-electric generation system provided by the present invention based on seawater vaporizer
Between, between electrothermal module and temperature-uniforming plate by paving carbon paper to reduce thermal contact resistance.
Multiple electrothermal modules are closely arranged side by side in the two sides of heating surface bank outer surface；The heating surface bank is generally rectangular
Body, punching is used as LNG pipeline along the vertical direction inside cuboid.
The temperature-uniforming plate is copper sheet, and the size of temperature-uniforming plate can cover heating surface bank surface.
The operational process of LNG cold energy thermo-electric generation system provided by the present invention based on seawater vaporizer are as follows: LNG by
LNG inlet tube enters heating surface bank bottom, and in heating surface bank, LNG flows from bottom to top, and seawater is come from the outside of heating surface bank
Heat gasification become natural gas, after by gas outlet pipe for users to use；Seawater enters sea from sea intake pipe
Water spray device, uniformly spray flows from above to below by gravity on soaking plate top, provides heat for the gasification of LNG；Due to sea
There are the larger temperature difference by water and LNG, and in electrothermal module two sides, the building temperature difference is to produce electricl energy.
Compared with prior art, the advantages and positive effects of the present invention are:
The present invention combines LNG seawater vaporizer with electrothermal module, can realization while not influencing LNG and normally gasifying
The thermo-electric generation of cold energy, structure is simple, easy to maintain, improves the energy utilization efficiency of LNG.
The present invention is separated the heating surface bank of seawater and LNG due to the presence of electrothermal module, avoid seawater directly with
LNG heating surface bank exchanges heat, and effectively alleviates ice formation issues existing for traditional LNG seawater vapor lamp.
Electrothermal module is arranged in the present invention, recycles LNG cold energy generation, heat source is used sea water as, due to seawater fluid interchange
Coefficient is higher, electrothermal module hot-side temperature can be made closer to ocean temperature, the hot and cold side temperature difference of electrothermal module is larger, generating efficiency
It is high.
The present invention is suitable for the fluctuation of LNG stream amount, and the change of flow will not impact the operation of system.Here suitable
It should refer to, changes in flow rate (no matter much or how small) does not influence normal power generation, and only generated energy can change, and avoid existing skill
Cause the fluctuation of LNG stream amount that can produce to the work of generator since setting power cycle carries out LNG cold energy generation form in art
The problem of raw very big influence causes it to there is the risk that cannot be run, is unfavorable for maintenance.
The volume and heat transfer area of heating surface bank can be arranged in the present invention according to LNG gasification scale, cannot be only used for newly-built LNG
In gasification station, and replaceable existing open-shelf seawater vaporizer.
The present invention uses the form of paving carbon paper in the two sides of electrothermal module, can be used for low temperature condition, can reduce seawater
Thermal contact resistance between gasifier surface and electrothermal module.
Detailed description of the invention
Fig. 1 is the front view of the LNG cold energy thermo-electric generation system provided by the present invention based on seawater vaporizer；
Fig. 2 is the side view of the LNG cold energy thermo-electric generation system provided by the present invention based on seawater vaporizer；
Fig. 3 is the top view of the LNG cold energy thermo-electric generation system provided by the present invention based on seawater vaporizer.
Specific embodiment
In order to further appreciate that the contents of the present invention, feature and effect, following embodiments is hereby enumerated, and cooperate attached drawing detailed
It describes in detail bright:
As shown in Figure 1-3, the present invention is based on the LNG cold energy thermo-electric generation systems of seawater vaporizer by LNG inlet tube 1, day
Right gas outlet 2, electrothermal module 3, heating surface bank 4, temperature-uniforming plate 5, sea intake pipe 6, seawater spraying device 7 form.LNG inlet tube
1 is connected with 4 bottom of heating surface bank, connects at the top of gas outlet pipe 2 and heating surface bank 4.The successively paving of 4 outer surface of heating surface bank
Electrothermal module 3 and temperature-uniforming plate 5, three can be connected with fastening, and be connect in 3 two sides paving carbon paper of electrothermal module with reducing
Touch thermal resistance.Sea intake pipe 6 is connected with seawater spraying device 7, and seawater spraying device 7 is located at 4 top of heating surface bank, and is located at natural gas
Below outlet.Whole system can be fixedly mounted using aluminium alloy post.
The electrothermal module 3 is small square, and multiple electrothermal modules are arranged in the two sides of 4 outer surface of heating surface bank, and more
A electrothermal module is closely arranged side by side, the heating surface bank 4 similar to an entirety cuboid, inside cuboid vertically side
To punching be used as LNG pipeline, that is to say, that 4 surface of heating surface bank be it is smooth, without fin exist.
Copper sheet can be selected in the temperature-uniforming plate, and the size of temperature-uniforming plate can cover heating surface bank surface.Specification, the heat of heating surface bank
The quantity specifications model of electric module can arrange that it is ability that the principle of thermo-electric generation is utilized about electrothermal module according to actual needs
Domain common sense.
The operational process of LNG cold energy thermo-electric generation system of the present invention based on seawater vaporizer are as follows: come from storage tank
LNG from LNG inlet tube 1 enter 4 bottom of heating surface bank, in heating surface bank 4, LNG flows from bottom to top, with the sea outside tube bank
Water exchanges heat, LNG absorb from seawater heat gasification become natural gas, after by gas outlet pipe 2 for users to use.
Seawater enters seawater spraying device 7 from sea intake pipe 6, and uniformly spray flows on 5 top of temperature-uniforming plate, seawater by gravity from top to bottom
It is dynamic, heat is provided for the gasification of LNG.Since there are the temperature difference with seawater by LNG, there are the temperature difference for 3 two sides of electrothermal module, can produce
Electric energy, to energize or be stored in battery for electrical appliance.
The present invention is based on the LNG cold energy thermo-electric generation systems of seawater vaporizer by LNG seawater vaporizer and electrothermal module phase
In conjunction with, thermo-electric generation is carried out using electrothermal module, the thermo-electric generation of cold energy can be realized while not influencing LNG and normally gasifying,
Structure is simple, easy to maintain, improves the efficiency of energy utilization of LNG.The present invention due to electrothermal module 3 presence, by seawater and
LNG heating surface bank 4 separates, and seawater is avoided directly directly to contact with LNG heat-transfer pipe, effectively alleviates traditional LNG seawater gas
Change ice formation issues existing for device.The present invention uses sea water as heat source, since seawater fluid interchange coefficient is higher, electrothermal module 3
The hot and cold side temperature difference it is larger, generating efficiency is high.The present invention is suitable for the fluctuation of LNG stream amount, and the change of flow will not be to system
Operation impacts.The present invention can be not only used for the use at newly-built LNG gasification station, can also directly replace existing open-shelf seawater gas
Change in device.
Although the preferred embodiment of the present invention is described above in conjunction with attached drawing, the invention is not limited to upper
The specific embodiment stated, the above mentioned embodiment is only schematical, be not it is restrictive, this field it is common
Technical staff under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, may be used also
By make it is many in the form of, within these are all belonged to the scope of protection of the present invention.
The present invention does not address place and is suitable for the prior art, and related component can be commercially available.
Claims (4)
1. a kind of LNG cold energy thermo-electric generation system based on seawater vaporizer, including LNG inlet tube, gas outlet pipe, seawater
Inlet tube, seawater spraying device, which is characterized in that the system further includes electrothermal module, heating surface bank and temperature-uniforming plate, the heat-transfer pipe
Beam bottom is connected with LNG inlet tube, and gas outlet pipe is connected at the top of heating surface bank；The outer surface of heating surface bank integral planar is spread
Multiple electrothermal modules are pasted, are laid with temperature-uniforming plate in the outer surface of multiple electrothermal modules；Heating surface bank top and be located at natural gas
Seawater spraying device is provided at left and right sides of the lower section of outlet, each seawater spraying device is connected with sea intake pipe, sea
The spray end of water spray device is towards heating surface bank.
2. electricity generation system according to claim 1, which is characterized in that between electrothermal module and heating surface bank, electrothermal module
The equal paving carbon paper between temperature-uniforming plate.
3. electricity generation system according to claim 1, which is characterized in that multiple electrothermal modules are closely arranged side by side in heat-transfer pipe
The two sides of beam outer surface；The heating surface bank generally cuboid, punching is managed as LNG along the vertical direction inside cuboid
Road.
4. electricity generation system according to claim 1, which is characterized in that the temperature-uniforming plate is copper sheet, the size energy of temperature-uniforming plate
Cover heating surface bank surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910807235.4A CN110417301A (en) | 2019-08-29 | 2019-08-29 | A kind of LNG cold energy thermo-electric generation system based on seawater vaporizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910807235.4A CN110417301A (en) | 2019-08-29 | 2019-08-29 | A kind of LNG cold energy thermo-electric generation system based on seawater vaporizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110417301A true CN110417301A (en) | 2019-11-05 |
Family
ID=68369222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910807235.4A Pending CN110417301A (en) | 2019-08-29 | 2019-08-29 | A kind of LNG cold energy thermo-electric generation system based on seawater vaporizer |
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| Country | Link |
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| CN (1) | CN110417301A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08163881A (en) * | 1994-12-01 | 1996-06-21 | Kansai Electric Power Co Inc:The | Power generation system utilizing coil of lng |
| JP2005072080A (en) * | 2003-08-28 | 2005-03-17 | Chubu Electric Power Co Inc | Power generator utilizing evaporation heat of lng |
| CN101997455A (en) * | 2009-08-21 | 2011-03-30 | 中国科学院理化技术研究所 | Semiconductor temperature difference power generation device for cold energy recovery power generation |
| JP2015008569A (en) * | 2013-06-25 | 2015-01-15 | 中国電力株式会社 | Power generator using cold lng |
| CN206707874U (en) * | 2017-05-25 | 2017-12-05 | 浙江海洋大学 | A kind of ship LNG dual fuel engine energy recycle devices |
| KR20180016704A (en) * | 2016-08-05 | 2018-02-19 | 강희자 | Liquefied natural gas open rack vaporizer |
| CN108832848A (en) * | 2018-07-18 | 2018-11-16 | 武汉理工大学 | A kind of portable miniaturization thermoelectric generator |
| CN109356680A (en) * | 2018-12-17 | 2019-02-19 | 大连理工大学 | A kind of Rankine cycle electricity generation system with thermo-electric generation heat exchanger using LNG cold energy |
| CN109538322A (en) * | 2018-11-28 | 2019-03-29 | 华电电力科学研究院有限公司 | A kind of LNG gasification system and working method based on stirling generator group |
| CN208982182U (en) * | 2018-11-12 | 2019-06-14 | 赫普科技发展（北京）有限公司 | LNG cold energy Stirling electricity generation system |
| CN210780603U (en) * | 2019-08-29 | 2020-06-16 | 河北工业大学 | LNG cold energy thermoelectric generation system based on seawater vaporizer |
-
2019
- 2019-08-29 CN CN201910807235.4A patent/CN110417301A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08163881A (en) * | 1994-12-01 | 1996-06-21 | Kansai Electric Power Co Inc:The | Power generation system utilizing coil of lng |
| JP2005072080A (en) * | 2003-08-28 | 2005-03-17 | Chubu Electric Power Co Inc | Power generator utilizing evaporation heat of lng |
| CN101997455A (en) * | 2009-08-21 | 2011-03-30 | 中国科学院理化技术研究所 | Semiconductor temperature difference power generation device for cold energy recovery power generation |
| JP2015008569A (en) * | 2013-06-25 | 2015-01-15 | 中国電力株式会社 | Power generator using cold lng |
| KR20180016704A (en) * | 2016-08-05 | 2018-02-19 | 강희자 | Liquefied natural gas open rack vaporizer |
| CN206707874U (en) * | 2017-05-25 | 2017-12-05 | 浙江海洋大学 | A kind of ship LNG dual fuel engine energy recycle devices |
| CN108832848A (en) * | 2018-07-18 | 2018-11-16 | 武汉理工大学 | A kind of portable miniaturization thermoelectric generator |
| CN208982182U (en) * | 2018-11-12 | 2019-06-14 | 赫普科技发展（北京）有限公司 | LNG cold energy Stirling electricity generation system |
| CN109538322A (en) * | 2018-11-28 | 2019-03-29 | 华电电力科学研究院有限公司 | A kind of LNG gasification system and working method based on stirling generator group |
| CN109356680A (en) * | 2018-12-17 | 2019-02-19 | 大连理工大学 | A kind of Rankine cycle electricity generation system with thermo-electric generation heat exchanger using LNG cold energy |
| CN210780603U (en) * | 2019-08-29 | 2020-06-16 | 河北工业大学 | LNG cold energy thermoelectric generation system based on seawater vaporizer |
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