CN106017168A - LNG vaporizer utilizing phase-change heat transfer technology and vaporization method - Google Patents
LNG vaporizer utilizing phase-change heat transfer technology and vaporization method Download PDFInfo
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- CN106017168A CN106017168A CN201610543052.2A CN201610543052A CN106017168A CN 106017168 A CN106017168 A CN 106017168A CN 201610543052 A CN201610543052 A CN 201610543052A CN 106017168 A CN106017168 A CN 106017168A
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- heat
- lng
- transferring medium
- heat transferring
- heat transfer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/025—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes having non-capillary condensate return means
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses an LNG vaporizer utilizing a phase-change heat transfer technology and a vaporization method. The vaporizer comprises a shell with a first heat transfer medium heat transfer cavity, wherein at least a row of corresponding through holes are formed in each of the upper side wall of which the height is smaller than a half of the height of the first heat transfer medium heat transfer cavity and the lower side wall of which the height is smaller than a half of the height of the first heat transfer medium heat transfer cavity on the two corresponding side walls of the shell; an LNG heat transfer pipeline of which one end communicates with an LNG inlet and the other end communicates with an LNG outlet is connected in the upper through holes in an interpenetrating manner; a second heat transfer medium heat transfer pipeline of which one end communicates with a second heat transfer medium inlet and the other end communicates with a second heat transfer medium outlet is connected in the lower through holes in an interpenetrating manner; and a plurality of vertical fins are mounted on the outer wall of each of the LNG heat transfer pipeline and the second heat transfer medium heat transfer pipeline in a sleeving manner in the axial direction. According to the LNG vaporizer, the problem that the vaporization performance of the vaporizer degrades due to the fact that a heat exchange medium ices up due to the fact that the temperature of LNG is too low is solved, and the structure is simple.
Description
Technical field
The present invention relates to a kind of carburator, especially relate to a kind of LNG vaporization device utilizing phase-change heat-exchange technology and gasification method,
Belong to technical field of heat exchangers.
Background technology
Along with global economy is fast-developing, Global Oil resource scarcity and problem of environmental pollution are the most serious so that flammability is good,
Pollute little gas consumption sharp increase, be gaseous state under natural gas room temperature, be not easy to storage and long-distance transportation, the most typically
First it is transformed into the liquefied natural gas (LNG) of-163 DEG C, then carries out storing and long-distance transportation.But before using LNG,
Need to utilize vapourizing unit that the LNG that temperature is-163 DEG C is improved the natural gas (NG) to about 5 DEG C.
The carburator being presently used for LNG vaporization mainly includes with Types Below:
(1) open-frame type vaporizer, i.e. LNG are at the heat transfer Bottomhole pressure of this device, and pipe is outer seawater spraying device sprayed sea water
In heat-transfer pipe, it is achieved sea water exchanges with the heat of LNG；This apparatus structure is simple, and heat exchange volume is big, directly utilize sea water with
LNG carries out heat exchange, but owing to LNG heat transfer temperature difference in heat transfer process is relatively big, released cold quantity is more, is easily caused sea water knot
Ice, therefore this device vaporization efficency can not be protected with stability.
(2) there is the carburator of intermediate heat transfer media, i.e. LNG and intermediate heat transfer media and carry out heat exchange, intermediate heat transfer media with
Sea water (or other thermals source) carries out heat exchange, owing to intermediate heat transfer media uses subzero medium, it is ensured that system is run
Stable；But owing to the device for intermediate flow need to be increased so that apparatus structure is complicated.
(3) shell-and-tube carburator, though this carburator compact conformation, but owing to pipe shell type heat exchange is inefficient and thermal source flow is relatively big,
Do not ensure that stablizing of LNG vaporization is carried out.
The patent of Application No. 200910307503.2 discloses the combined heat pipe exchanger of a kind of refrigeration technology field, this system master
If to be made up of, wherein casing, dividing plate dry heat pipe and heat pipe fixed structure: the two ends of casing are correspondingly provided with natural gas respectively and enter
Mouth pipeline, refrigerant outlet pipeline and refrigerant inlet pipeline, Liquid natural gas inlet pipeline, one end of dividing plate is fixedly installed
Between the Imported gas pipeline and refrigerant outlet pipeline of box house one end, the other end of dividing plate is fixedly installed in casing
Between refrigerant inlet pipeline and the liquefied natural gas export pipeline of portion's other end, heat pipe fixed structure is fixedly installed on dividing plate,
Heat pipe is connected with heat pipe fixed structure and perpendicular in dividing plate.Heat exchange process is divided into three warm areas by the present invention, according to each
The heat-pipe working medium of different boiling is chosen in the requirement of warm area operating temperature, in order to avoid causing heat-pipe working medium because operating temperature is too low
Solidification, this technology solves LNG vaporization under the big temperature difference theoretically.But owing to the operating temperature in heat exchanger can be along with LNG
The changes in flow rate of evaporating capacity and cold-producing medium produces huge fluctuation, causes the warm area divided in theory to be corrupted such that in this work temperature
Heat pipe in district makes it lose efficacy due to the limitation of working medium boiling point, it is impossible to carries out heat transmission, and then makes heat exchanger efficiency reduce impact
The vaporization of LNG.
The patent of Application No. 201310120847.9 discloses a kind of small liquid natural gas vaporizer, and its structure includes housing,
It is provided with LNG import, NG outlet, coolant import and refrigerant exit on housing, is provided with in housing and is connected with LNG import
Inner tube, it is characterised in that be provided with sleeve pipe outside inner tube, flow through inner tube liquefied natural gas vaporization generate natural gas gas,
Natural gas gas enters sleeve pipe, runs on as intermediate medium in the gap of inner tube and sleeve pipe formation, and by NG outlet output.
But according to when running described by it be use will by the NG after pipe with coolant heat exchange temperature rise as middle coolant for again
Carrying out heat exchange with LNG, owing to the release of LNG heat exchange cold is big, in the gap that inner tube and sleeve pipe are formed, NG is possible will be again
Being cooled to LNG, whole process can not meet the requirement of LNG vaporization；If this system of LNG vaporization requirement need to be met to be run
Time have to the evaporating capacity of the NG growing amount and LNG with higher temperature and NG mate completely.But it is as described in this patent, real
In the operation of border, these two aspects conditions each other, if when LNG vaporization demand is higher, this system is big due to LNG stream amount, but NG
Around being in control shortage of heat to provide the vaporization of LNG, whole system will run, and if refrigerant temperature too low, it is ensured that
The not temperature requirements of NG, this system also cannot be properly functioning.And be provided with sleeve pipe in the invention, and employing is changed around tubular type
Hot device, equipment is the hugest is but unable to reach corresponding heat exchange efficiency, and therefore in the present invention, the loss of carried cold energy is less and heat exchange is imitated
The saying that rate is high is worth discussion.
Summary of the invention
The present invention is directed to the defect of function limitation existing for above-mentioned prior art, it is provided that a kind of phase-change heat-exchange technology of utilizing
LNG vaporization device and gasification method.
Keep vacuum state in the vaporizer shell of the present invention and be filled with the first heat transferring medium as working media.The second of high temperature
When heat transferring medium flows through the second heat transferring medium heat exchange pipeline, with the first heat transferring medium heat exchange so that the first heat transferring medium vaporization, by
Liquid becomes gaseous state, moves to vaporizer shell top, change with the LNG in LNG heat exchange pipeline under power effect floating life
Heat, after the first heat transferring medium after vaporization absorbs a large amount of colds that LNG is become gaseous state release by liquid, at LNG heat exchange pipeline
Outside wall surface is condensed into liquid, under gravity, is again back to vaporizer shell bottom, re-starts new vaporization and condensation mistake
Journey, and then realize LNG vaporization；Solved owing to LNG temperature is too low by the vaporization and condensation process utilizing the first heat transferring medium
And cause heat transferring medium to freeze and cause the problem of carburator vaporization penalty, and structure is simpler.
In order to achieve the above object, the present invention adopts the following technical scheme that
A kind of LNG vaporization device utilizing phase-change heat-exchange technology, including having the housing 4 of the first heat transferring medium heat exchanging chamber 9, described
On the two side that housing 4 is corresponding, less than described first heat transferring medium heat exchanging chamber 9 height 1/2nd upper portion side wall on and little
Corresponding the leading to of at least one row is offered respectively on the lower sides of described first heat transferring medium heat exchanging chamber 9 height 1/2nd
Hole, running through connection in upper through-hole has one end to be communicated with LNG import 1, and the other end is communicated with the LNG heat exchange of LNG outlet 5
Pipeline 2, running through connection in lower through-hole has one end to be communicated with the second heat transferring medium import 6, and the other end is communicated with the second heat transferring medium
Second heat transferring medium heat exchange pipeline 7 of outlet 8, wherein said LNG heat exchange pipeline 2 and the second heat transferring medium heat exchange pipeline 7
Outer wall on be the most each set with some vertical fins 3.
Housing 4 first heat transferring medium heat exchanging chamber 9 intrinsic pressure described above is to be filled with described in submergence under conditions of 100-150Pa
Second heat transferring medium heat exchange pipeline 7 and less than cavity volume 1/2 the first heat transferring medium.Described first heat transferring medium is low
Boiling point working medium.Described low boiling working fluid is any one in R22, ethylene glycol and propane.
LNG heat exchange pipeline 2 described above and the spread pattern of the second heat transferring medium heat exchange pipeline 7 are cross arrangement or in-line arrangement row
Row；Described LNG heat exchange pipeline 2 and the second heat transferring medium heat exchange pipeline 7 are direct piping, spiral or circulating line.
Housing 4 described above is cuboid, square or ellipsoid.
The gasification method of a kind of LNG vaporization device utilizing phase-change heat-exchange technology, specifically enters from the second heat transferring medium import 6
The first heat exchange that second heat transferring medium of high temperature flows through in the second heat transferring medium heat exchange pipeline 7 and the first heat transferring medium heat exchanging chamber 9 is situated between
Matter heat exchange so that the first heat transferring medium vaporization, moves to the top of the first heat transferring medium heat exchanging chamber 9 under power effect floating life,
Carrying out heat exchange with the LNG in LNG heat exchange pipeline 2, the first heat transferring medium after vaporization absorbs LNG and is become gaseous state release by liquid
After a large amount of colds gone out, it is condensed into liquid in LNG heat exchange pipeline 2 outside wall surface, under gravity, is again back to first and changes
Thermal medium heat exchanging chamber 9 bottom, re-starts new vaporization and condensation process, and then realizes LNG vaporization.
Compared with prior art, the advantageous feature of the present invention is:
Keep vacuum state in housing 4 and be filled with the first heat transferring medium so that the first heat transferring medium boiling point reduces, increasing heat transfer and push away
Power, enhanced heat exchange effect；Flexible arrangement can run through LNG heat exchange pipeline 2 and the second heat transferring medium heat exchange pipeline of housing 4
7, the mode utilizing the first heat transferring medium to undergo phase transition realizes evaporation and condensing heat-exchange；In LNG heat exchange pipeline 2 and the second heat exchange
The most each it is set with some vertical fins 3 on media for heat exchange pipeline 7 outer wall in order to make condensation water depart from time, plays strengthening
The purpose of heat exchange；The present invention vaporization efficency raising more than 30% and physical dimension compared with existing carburator reduce 50%, and knot
Structure is the simplest, can be solved owing to LNG temperature is too low and cause heat exchange to be situated between by the vaporization and condensation process utilizing the first heat transferring medium
The problem that matter icing causes carburator vaporization penalty.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of patent of the present invention,
Fig. 2 is the A-A profile of Fig. 1,
Fig. 3 is the B-B profile of Fig. 1,
In figure: 1, LNG import；2, LNG heat exchange pipeline；3, vertical fins；4, housing；5, NG outlet；6、
Second heat transferring medium import；7, the second heat transferring medium heat exchange pipeline；8, the second heat transferring medium outlet；9, the first heat transferring medium changes
Hot chamber.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, the present invention is described in further detail, but scope is not limited to
The technical scheme that following embodiment, all employing equivalents or equivalent transformation form obtain, all within scope.
As shown in accompanying drawing 1 to Fig. 3, for a kind of LNG vaporization device utilizing phase-change heat-exchange technology of the embodiment of the present invention, including tool
There is the housing 4 of the first heat transferring medium heat exchanging chamber 9, on the two side that described housing 4 is corresponding, less than described first heat transferring medium
Heat exchanging chamber 9 height 1/2nd upper portion side wall on and less than described first heat transferring medium heat exchanging chamber 9 height 1/2nd bottom
Offering two rows, often 5 corresponding through holes of seniority among brothers and sisters on sidewall respectively, extending through connection in the through hole of 10, top has one end even
Being connected with LNG import 1, the other end is communicated with the LNG heat exchange pipeline 2 of LNG outlet 5, passes through respectively in the through hole of 10, bottom
Wearing connection has one end to be communicated with the second heat transferring medium import 6, and the other end is communicated with the second heat exchange of the second heat transferring medium outlet 8 and is situated between
Matter heat exchange pipeline 7, the most respective on wherein said LNG heat exchange pipeline 2 and the outer wall of the second heat transferring medium heat exchange pipeline 7
It is set with some vertical fins 3.
The present invention is for ensureing carburator heat transfer efficient, and housing 4 first heat transferring medium heat exchanging chamber 9 intrinsic pressure described above is
Be filled with under conditions of 100-150Pa the second heat transferring medium heat exchange pipeline 7 described in submergence and less than cavity volume 1/2 first
Heat transferring medium.Described first heat transferring medium is low boiling working fluid.Described low boiling working fluid is in R22, ethylene glycol and propane
Any one.
LNG heat exchange pipeline 2 described above and the spread pattern of the second heat transferring medium heat exchange pipeline 7 are in-line arrangement arrangement；Described
LNG heat exchange pipeline 2 and the second heat transferring medium heat exchange pipeline 7 are direct piping.
Housing 4 described above is cuboid.Described LNG heat exchange pipeline 2 and the second heat transferring medium heat exchange pipeline 7 and LNG
Import 1 and LNG outlet 5, the second heat transferring medium import 6 and the second heat transferring medium outlet 8 are with the connection of housing 4 and to weld
Connect
As shown in accompanying drawing 1 to Fig. 3, for the vaporization side of a kind of LNG vaporization device utilizing phase-change heat-exchange technology of the embodiment of the present invention
Method, the second heat transferring medium of the high temperature specifically entered from the second heat transferring medium import 6 flows through the second heat transferring medium heat exchange pipeline 7
With the first heat transferring medium heat exchange in the first heat transferring medium heat exchanging chamber 9 so that the first heat transferring medium vaporization, at masterpiece floating life
Move to the top of the first heat transferring medium heat exchanging chamber 9 under with, carry out heat exchange with the LNG in LNG heat exchange pipeline 2, after vaporization
The first heat transferring medium absorb after LNG becomes, by liquid, a large amount of colds that gaseous state discharges, in LNG heat exchange pipeline 2 outside wall surface
It is condensed into liquid, under gravity, is again back to the first heat transferring medium heat exchanging chamber 9 bottom, re-starts new vaporization cold
Solidifying process, and then realize LNG vaporization.
These are only embodiments of the present invention, it describes more concrete and detailed, but can not therefore be interpreted as the present invention
The restriction of the scope of the claims.It should be pointed out that, for the person of ordinary skill of the art, without departing from present inventive concept
Under premise, the technical scheme that all employing equivalents or equivalent transformation are formed, belong to the protection domain of application claims.
Claims (7)
1. utilize a LNG vaporization device for phase-change heat-exchange technology, including having the housing (4) of the first heat transferring medium heat exchanging chamber (9),
It is characterized in that: on the two side that described housing (4) is corresponding, less than described first heat transferring medium heat exchanging chamber (9) highly two
Open respectively in the upper portion side wall of/mono-and less than on the lower sides of described first heat transferring medium heat exchanging chamber (9) highly 1/2nd
Being provided with the through hole that at least one row is corresponding, running through connection in upper through-hole has one end to be communicated with LNG import (1), and the other end connects
Having the LNG heat exchange pipeline (2) of LNG outlet (5), running through connection in lower through-hole has one end to be communicated with the second heat transferring medium to enter
Mouth (6), the other end is communicated with the second heat transferring medium heat exchange pipeline (7) of the second heat transferring medium outlet (8), wherein said
Some vertical fins the most each it are set with on the outer wall of LNG heat exchange pipeline (2) and the second heat transferring medium heat exchange pipeline (7)
(3)。
The LNG vaporization device utilizing phase-change heat-exchange technology the most according to claim 1, it is characterised in that: described housing (4)
First heat transferring medium heat exchanging chamber (9) intrinsic pressure is to be filled with the second heat transferring medium heat exchange described in submergence under conditions of 100-150Pa
Pipeline (7) and less than cavity volume 1/2 the first heat transferring medium.
The LNG vaporization device utilizing phase-change heat-exchange technology the most according to claim 2, it is characterised in that: described first changes
Thermal medium is low boiling working fluid.
The LNG vaporization device utilizing phase-change heat-exchange technology the most according to claim 3, it is characterised in that: described low boiling
Point working medium is any one in R22, ethylene glycol and propane.
The LNG vaporization device utilizing phase-change heat-exchange technology the most according to claim 1, it is characterised in that: described LNG
The spread pattern of heat exchange pipeline (2) and the second heat transferring medium heat exchange pipeline (7) is cross arrangement or in-line arrangement arrangement；Described LNG
Heat exchange pipeline (2) and the second heat transferring medium heat exchange pipeline (7) are direct piping, spiral or circulating line.
The LNG vaporization device utilizing phase-change heat-exchange technology the most according to claim 1, it is characterised in that: described housing (4)
For cuboid, square or ellipsoid.
7. according to a gasification method for the LNG vaporization device utilizing phase-change heat-exchange technology described in any one of claim 1-5,
It is characterized in that: the second heat transferring medium of the high temperature entered from the second heat transferring medium import (6) flows through the second heat transferring medium heat exchanger tube
Road (7) and the first heat transferring medium heat exchange in the first heat transferring medium heat exchanging chamber (9) so that the first heat transferring medium vaporization,
Under power effect floating life, move to the top of the first heat transferring medium heat exchanging chamber (9), enter with the LNG in LNG heat exchange pipeline (2)
Row heat exchange, after the first heat transferring medium absorption LNG after vaporization is become, by liquid, a large amount of colds that gaseous state discharges, in LNG heat exchange
Pipeline (2) outside wall surface is condensed into liquid, under gravity, is again back to the first heat transferring medium heat exchanging chamber (9) bottom,
Re-start new vaporization and condensation process, and then realize LNG vaporization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610543052.2A CN106017168A (en) | 2016-07-11 | 2016-07-11 | LNG vaporizer utilizing phase-change heat transfer technology and vaporization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610543052.2A CN106017168A (en) | 2016-07-11 | 2016-07-11 | LNG vaporizer utilizing phase-change heat transfer technology and vaporization method |
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| CN106017168A true CN106017168A (en) | 2016-10-12 |
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| CN201610543052.2A Pending CN106017168A (en) | 2016-07-11 | 2016-07-11 | LNG vaporizer utilizing phase-change heat transfer technology and vaporization method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224081A (en) * | 2018-01-22 | 2018-06-29 | 利华能源储运股份有限公司 | A kind of slot type gasifier system |
| CN108266642A (en) * | 2018-01-23 | 2018-07-10 | 深圳市燃气集团股份有限公司 | A kind of intermediate medium heat exchanger based on enhanced tube |
| CN111022921A (en) * | 2019-11-27 | 2020-04-17 | 惠生（南通）重工有限公司 | Heat exchange system of printing plate type LNG vaporizer |
| CN111637775A (en) * | 2020-05-13 | 2020-09-08 | 青岛海尔新能源电器有限公司 | Phase change heat exchanger |
| CN111879157A (en) * | 2020-07-30 | 2020-11-03 | 江苏科技大学 | Air temperature recovery type LNG vaporizer and working method thereof |
| TWI738267B (en) * | 2020-03-27 | 2021-09-01 | 奇鋐科技股份有限公司 | A dual heat transfer structure |
| US11598584B2 (en) | 2020-04-15 | 2023-03-07 | Asia Vital Components Co., Ltd. | Dual heat transfer structure |
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| JP2000227200A (en) * | 1999-02-04 | 2000-08-15 | Kobe Steel Ltd | Intermediate medium vaporizer, natural gas supplying method using the same |
| CN104154786A (en) * | 2014-08-20 | 2014-11-19 | 湖北迪峰换热器股份有限公司 | Three-medium efficient LNG vaporizer strengthening evaporation and condensation |
| CN204026130U (en) * | 2014-06-18 | 2014-12-17 | 航天晨光股份有限公司 | A kind of improved LNG central fluid vaporizer |
| CN205843449U (en) * | 2016-07-11 | 2016-12-28 | 江苏科技大学 | A kind of LNG vaporization device utilizing phase-change heat-exchange technology |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224081A (en) * | 2018-01-22 | 2018-06-29 | 利华能源储运股份有限公司 | A kind of slot type gasifier system |
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| CN111022921A (en) * | 2019-11-27 | 2020-04-17 | 惠生（南通）重工有限公司 | Heat exchange system of printing plate type LNG vaporizer |
| CN111022921B (en) * | 2019-11-27 | 2022-04-12 | 惠生（南通）重工有限公司 | Heat exchange system of printing plate type LNG vaporizer |
| TWI738267B (en) * | 2020-03-27 | 2021-09-01 | 奇鋐科技股份有限公司 | A dual heat transfer structure |
| US11598584B2 (en) | 2020-04-15 | 2023-03-07 | Asia Vital Components Co., Ltd. | Dual heat transfer structure |
| CN111637775A (en) * | 2020-05-13 | 2020-09-08 | 青岛海尔新能源电器有限公司 | Phase change heat exchanger |
| CN111879157A (en) * | 2020-07-30 | 2020-11-03 | 江苏科技大学 | Air temperature recovery type LNG vaporizer and working method thereof |
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Application publication date: 20161012 |