CN205938522U - Liquefied natural gas gasification equipment - Google Patents
Liquefied natural gas gasification equipment Download PDFInfo
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- CN205938522U CN205938522U CN201620888613.8U CN201620888613U CN205938522U CN 205938522 U CN205938522 U CN 205938522U CN 201620888613 U CN201620888613 U CN 201620888613U CN 205938522 U CN205938522 U CN 205938522U
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- refrigerating medium
- natural gas
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Abstract
The utility model relates to a liquefied natural gas gasification equipment, the device include a natural gas pipeline and heat exchanger, and a natural gas pipeline includes liquid natural gas pipeline section and gaseous state natural gas pipeline section, and the heat exchanger includes the casing, sets up the 2nd natural gas pipeline inside the casing and set up at the inside first secondary refrigerant pipeline of casing, wherein: the 2nd natural gas pipeline lies in the inside top of casing, and feeds through liquid natural gas pipeline section and gaseous state natural gas pipeline section, first secondary refrigerant pipeline is located the inside below of casing, and its entry is suitable for and lets in first secondary refrigerant, its export and the outside intercommunication of casing, there is the second secondary refrigerant at inside the 2nd natural gas pipeline of casing and the outside holding of first secondary refrigerant pipeline. The utility model provides a gasification equipment utilizes the cold energy of second secondary refrigerant in to the liquified natural gas to retrieve, utilizes first secondary refrigerant to derive the absorptive cold energy of second secondary refrigerant, the recovery work of the cold energy of being convenient for.
Description
Technical field
This utility model is related to Thermal Power Engineering technical field, especially relates to a kind of liquefied natural gas gasifying device.
Background technology
Liquefied natural gas (Liquefied Natural Gas, abbreviation LNG) gasification station is mainly reception and connects from port LNG
Receive station or the LNG that ships of liquefaction plant, through gasification and plus smelly after send into gas distributing system it is adaptable to what gas transmission line was difficult to reach
Small Urban and the special manufacturing firm needing using clean energy resource.In recent years, being continuously increased with LNG consumption, LNG receives
Quickly increasing also occurs in the quantity stood.The LNG gasification process of LNG receiving station is typically completed using gasifier.
At present, the gasifier that LNG receiving station in harbour commonly uses mainly has seawater open-frame type gasifier, submerged combustion gasifier
And intermediate medium gasifier.Wherein, seawater open-frame type gasifier utilizes sea water is heating medium, and LNG is in finned pipe bundle plate
Inside perpendicular flow from bottom to top, sea water then sprays outside pipe bundle plate from top to bottom, realizes LNG gas by reverse flow heat-shift
Change.Submerged combustion gasifier is to be burnt on the water-bath water surface natural gas using burner, and heat smoke passes through exhaustor by spraying
Device enters in the water of water-bath, improves water temp. heating evaporation LNG and realizes gasification.Intermediate medium gasifier utilizes intermediate medium by sea water
Heat transfer realizes gasification to LNG.It can be seen that, these three seawater open-frame type gasifiers above are all to LNG with sea water for heating source
Gasified, and the cold energy in gasification is discharged in the ocean of periphery it is impossible to efficient recovery.
At present, the gasifier that LNG receiving station in inland commonly uses mainly has air heated type gasifier and water bath type gasifier.Its
In, air heated type gasifier is to provide heat using in the air heat for LNG gasification, and cold is discharged in ambient atmosphere.
Because air heating efficiency is less, the volume of therefore integrated gasification device is larger, and cost is higher.It is simultaneously influenced by environmental conditions,
When the temperature of the surroundings is low, when air-heating type gasifier export gas temperature is less than 5 DEG C, the outside easily icing condensation of gasifier, shadow
Ring gasification efficiency；Now, typically adopt water-bath type heater, to ensure the normal operation entirely supplying.Water bath type gasifier is
Obtain hot water using mode of heating, using heater, the cryogenic liquid being immersed in inner tube is carried out with heating and gasifying, the method needs
Consume substantial amounts of fuelled with natural gas.Above two gasifier equally all cannot reclaim cold energy during LNG gasification.
Utility model content
Technical problem to be solved in the utility model be how to be easy to reclaim liquefied natural gas gasifying during cold energy.
For solving above-mentioned technical problem, the utility model proposes a kind of liquefied natural gas gasifying device.This gasification installation
Including：
First gas pipeline and heat exchanger, described first gas pipeline includes liquified natural gas line segments and gaseous state sky
So trachea section, described heat exchanger includes housing, the second gas pipeline being arranged on described enclosure interior and is arranged on described
First refrigerating medium pipeline of enclosure interior, wherein：
Described second gas pipeline, positioned at the top of described enclosure interior, and connects described liquified natural gas line segments
With described gaseous natural gas line segments；
Described first refrigerating medium pipeline, positioned at the lower section of described enclosure interior, its entrance is suitable to be passed through the first refrigerating medium, its
Outlet is connected with described hull outside；
It is equipped with described second gas pipeline of described enclosure interior and the outside of described first refrigerating medium pipeline
Two refrigerating mediums；
Described first refrigerating medium is suitable to absorb when flowing through described first refrigerating medium pipeline cold in described second refrigerating medium
Can, make the second refrigerating medium being in liquid be changed into gaseous state；
It is in gaseous second refrigerating medium and be suitable to when liquified natural gas flows through described second gas pipeline absorb liquid
Cold energy in natural gas, makes liquified natural gas be changed into gaseous natural gas.
Optionally, this gasification installation also includes being arranged on the regenerator outside described heat exchanger, described regenerator with described
The outlet of the first refrigerating medium pipeline connects, and described regenerator is used for absorbing the cold energy of the first refrigerating medium flowing out described heat exchanger.
Optionally, this gasification installation also includes circulating pump, and described circulating pump is used for be absorbed after cold energy by described regenerator
The first refrigerating medium be passed through in described second gas pipeline.
Optionally, the quantity of the first refrigerating medium pipeline in described heat exchanger is multiple.
Optionally, this gasification installation also includes：
Second refrigerating medium pipeline, the entrance of described second refrigerating medium pipeline is used for being passed through the first refrigerating medium, described second load
The outlet of refrigerant circuit is connected with the entrance of each described first refrigerating medium pipeline, and described gaseous natural gas line segments break-through institute
State the side wall of the second refrigerating medium pipeline；
Described first refrigerating medium is further adapted for absorbing in described gaseous natural gas when flowing through described second refrigerating medium pipeline
Cold energy, makes the temperature of gaseous natural gas raise.
Optionally, described second refrigerating medium pipeline and described gaseous natural gas line segments is axially vertical.
Optionally, described first refrigerating medium is glycol water.
Optionally, described second refrigerating medium is propane.
Optionally, described second gas pipeline is U-shaped.
The liquefied natural gas gasifying device that this utility model provides, the second refrigerating medium using liquid absorbs liquified natural gas
In cold energy, absorb cold energy after the second refrigerating medium be changed into liquid, then by first refrigerating medium absorb the second refrigerating medium in cold
Can, gaseous state being changed into by the second refrigerating medium absorbing after cold energy, absorbing the first refrigerating medium outflow heat exchanger after cold energy, thus realizing
The work such as follow-up cold energy use, recovery.It can be seen that, this utility model is to the cold energy in liquified natural gas using the second refrigerating medium
Reclaim, derived using the cold energy that the first refrigerating medium absorbs to the second refrigerating medium, be easy to cold energy recovery operation.
Brief description
Characteristic information of the present utility model and advantage can be more clearly understood from by reference to accompanying drawing, accompanying drawing is schematic
And should not be construed as carrying out any restriction to this utility model, in the accompanying drawings：
Fig. 1 shows the structural representation according to this utility model liquefied natural gas gasifying device one embodiment；
Description of reference numerals：
11- liquified natural gas line segments；12- gaseous natural gas line segments；2- heat exchanger；21- housing；22- second is natural
Air pipe；23- the first refrigerating medium pipeline；3- the second refrigerating medium pipeline.
Specific embodiment
In order to be more clearly understood that above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the accompanying drawings and tool
Body embodiment is further described in detail to this utility model.It should be noted that in the case of not conflicting, this Shen
Feature in embodiment please and embodiment can be mutually combined.
Elaborate a lot of details in the following description in order to fully understand this utility model, but, this practicality
New can also be different from other modes described here implementing using other, therefore, protection domain of the present utility model is simultaneously
Do not limited by following public specific embodiment.
This utility model provides a kind of liquefied natural gas gasifying device, as shown in figure 1, this gasification installation to include first natural
Air pipe and heat exchanger 2, described first gas pipeline includes liquified natural gas line segments 11 and gaseous state gas pipeline section 12,
Described heat exchanger 2 includes housing 21, is arranged on the second gas pipeline 22 within described housing 21 and is arranged on described housing
The first refrigerating medium pipeline 23 within 21, wherein：
Described second gas pipeline 22, positioned at the top within described housing 21, and connects described liquid natural trachea
Section 11 and described gaseous natural gas line segments 12；
Described first refrigerating medium pipeline 23, positioned at the lower section within described housing 21, its entrance is suitable to be passed through the first refrigerating
Agent, its outlet and described housing 21 ft connection；
Described second gas pipeline 22 within described housing 21 and the outside appearance of described first refrigerating medium pipeline 23
It is equipped with the second refrigerating medium；
Described first refrigerating medium is suitable to when flowing through described first refrigerating medium pipeline 23 absorb in described second refrigerating medium
Cold energy, makes the second refrigerating medium being in liquid be changed into gaseous state；
It is in gaseous second refrigerating medium and be suitable to the absorbing liquid when liquified natural gas flows through described second gas pipeline 22
Cold energy in state natural gas, makes liquified natural gas be changed into gaseous natural gas.
It should be appreciated that the second gas pipeline 22 is located at the top within described housing 21, it is because working as liquid flow
Through gaseous state will be become from liquid during the second gas pipeline 22 it is therefore desirable to absorb the heat being in gaseous second refrigerating medium
Can, and the second refrigerating medium is in the top being located at during gaseous state within housing 21, therefore the second gas pipeline 22 is placed in housing
Top within 21, the second gas pipeline 22 can be placed in the atmosphere of gaseous state second refrigerating medium.
It should be appreciated that described second gas pipeline 22 connects described liquified natural gas line segments 11 and described gaseous state
Natural gas tube section 12, i.e. the outlet of the entrance of the second gas pipeline 22 and liquified natural gas line segments 11, second day
So the outlet of air pipe 22 is connected with gaseous natural gas line segments 12 entrance.In practical application, liquified natural gas is from liquid sky
So the entrance in trachea section 11 enters, and is then passed through the second gas pipeline 22 and becomes gaseous state, gaseous natural gas enter gaseous state sky
So trachea section 12, out from the outlet of gaseous natural gas line segments 12 finally.
It should be appreciated that the first refrigerating medium pipeline 23 is located at the lower section within housing 21, it is because when the first refrigerating medium
Need when flowing through the first refrigerating medium pipeline 23 to absorb the cold energy in the second refrigerating medium of liquid, and when the second refrigerating medium is in liquid
Positioned at the lower section within housing 21, therefore the first refrigerating medium pipeline 23 is placed in the lower section within housing 21, first can be carried
Refrigerant circuit 23 is placed in the environment of liquid second refrigerating medium.
It should be appreciated that the entrance of the first refrigerating medium pipeline 23 is suitable to be passed through the first refrigerating medium, the first refrigerating medium pipeline
23 outlet and described housing 21 ft connection, like this, the first refrigerating medium enters the first refrigerating medium pipeline 23 and absorbs second
Can flow to after the cold energy of refrigerating medium outside housing 21, so just can for example be used for sky using the cold energy in the second refrigerating medium
The refrigeration adjusted.
It should be appreciated that the entrance of the liquified natural gas in Fig. 1 is the entrance of liquified natural gas line segments 11, gaseous state sky
So the outlet of gas is the outlet of gaseous natural gas line segments 12, and the entrance of the first refrigerating medium is the second refrigerating medium line entry.
In the liquefied natural gas gasifying device that this utility model provides, the second refrigerating medium using liquid absorbs liquid natural
Cold energy in gas, absorbs the second refrigerating medium after cold energy and is changed into liquid, then absorbed in the second refrigerating medium by the first refrigerating medium
Cold energy, is changed into gaseous state by the second refrigerating medium absorbing after cold energy, absorbs the first refrigerating medium outflow heat exchanger 2 after cold energy, thus
Realize the work such as follow-up cold energy use, recovery.It can be seen that, this utility model is in liquified natural gas using the second refrigerating medium
Cold energy reclaims, and is derived using the cold energy that the first refrigerating medium absorbs to the second refrigerating medium, is easy to cold energy recovery operation.Simultaneously as
Using the first refrigerating medium and the second refrigerating medium secondary heat exchange, decrease every grade of the temperature difference, it is to avoid first during absorbing cold energy
Condensing occurs in refrigerating medium.The gasification installation structure that the present invention provides is simple, be applied to various types of liquified natural gas receiving stations,
The cold energy being especially suitable for small-sized liquified natural gas receiving station reclaims.
In the specific implementation, the gasification installation that this utility model provides can also include the unshowned regenerator of in figure, stores
Cooler is arranged on the outside of described heat exchanger 2, and described regenerator is connected with the outlet of described first refrigerating medium pipeline 23, described storage
Cooler is used for absorbing the cold energy of the first refrigerating medium flowing out described heat exchanger 2.
Here, the cold energy in the first refrigerating medium of outflow heat exchanger 2, while reclaiming, first is reclaimed by regenerator
The temperature of refrigerating medium raises, and so the first refrigerating medium that temperature raises can be passed through in heat exchanger 2 again, absorbs the second load again
Cold energy in cryogen.
Further, the circulation of the first refrigerating medium for convenience, the gasification installation that this utility model provides can also include
Circulating pump, described circulating pump is used for being passed through described second natural gas tube by being absorbed the first refrigerating medium after cold energy by described regenerator
In road 22.
In the specific implementation, the number of the first refrigerating medium pipeline 23 is not limited, can be one or many
Individual.In order to realize accelerating the absorption to cold energy in the second refrigerating medium, multiple first refrigerating medium pipelines are set typically in housing 21
23.
In the specific implementation, in order to absorb the cold energy in natural gas further, the gaseous natural gas of higher temperature are obtained, this
The gasification installation that utility model provides can also include：First refrigerating medium pipeline 3, the entrance of described first refrigerating medium pipeline 3 is used
In being passed through the first refrigerating medium, the outlet of described second refrigerating medium is connected with the entrance of each described first refrigerating medium pipeline 23, and
The side wall of the first refrigerating medium pipeline 3 described in the break-through of described gaseous natural gas line segments 12；Described first refrigerating medium is further adapted in stream
Absorb the cold energy in described gaseous natural gas during through described second refrigerating medium pipeline, so that the temperature of gaseous natural gas is raised.
It should be appreciated that because the outlet of the first refrigerating medium pipeline 3 is connected with the entrance of the first refrigerating medium pipeline 23, because
This first refrigerating medium, first when flowing through the first refrigerating medium pipeline 3, absorbs the cold energy in gaseous natural gas, the temperature of the first refrigerating medium
Degree reduces.Then, absorb the first refrigerating medium after cold energy in gaseous natural gas to enter in the first refrigerating medium pipeline 23, absorb second
Cold energy in refrigerating medium, makes the second refrigerating medium of liquid become gaseous second refrigerating medium.Finally, cold in absorption the second refrigerating medium
First refrigerating medium outflow heat exchanger 2 of energy.
In the specific implementation, described first refrigerating medium pipeline 3 and described gaseous natural gas line segments 12 is axially vertical, this
If sample, the flow direction of gaseous natural gas is perpendicular with flowing to of the first refrigerating medium, makes the first refrigerating medium absorb gaseous natural gas as far as possible
In cold.
In the specific implementation, the first refrigerating medium can be, but not limited to adopt glycol water, and its concentration is according to actual need
Ask setting.
In the specific implementation, the second refrigerating medium can be, but not limited to using evaporating temperature in -42 DEG C about of propane.
In the specific implementation, the second gas pipeline 22 can be, but not limited to using U-shaped pipeline.
In this utility model, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying
Relative importance.Term " multiple " refers to two or more, limits unless otherwise clear and definite.
Although being described in conjunction with the accompanying embodiment of the present utility model, those skilled in the art can without departing from
Various modifications and variations are made, such modification and modification each fall within by appended in the case of spirit and scope of the present utility model
Within claim limited range.
Claims (9)
1. a kind of liquefied natural gas gasifying device is it is characterised in that include the first gas pipeline and heat exchanger, described first day
So air pipe includes liquified natural gas line segments and gaseous state gas pipeline section, described heat exchanger include housing, be arranged on described
Second gas pipeline of enclosure interior and the first refrigerating medium pipeline being arranged on described enclosure interior, wherein：
Described second gas pipeline, positioned at the top of described enclosure interior, and connects described liquified natural gas line segments and institute
State gaseous natural gas line segments；
Described first refrigerating medium pipeline, positioned at the lower section of described enclosure interior, its entrance is suitable to be passed through the first refrigerating medium, its outlet
Connect with described hull outside；
It is equipped with the second load in described second gas pipeline of described enclosure interior and the outside of described first refrigerating medium pipeline
Cryogen；
Described first refrigerating medium is suitable to absorb the cold energy in described second refrigerating medium when flowing through described first refrigerating medium pipeline, makes
The second refrigerating medium being in liquid is changed into gaseous state；
It is in gaseous second refrigerating medium and be suitable to when liquified natural gas flows through described second gas pipeline absorb liquid natural
Cold energy in gas, makes liquified natural gas be changed into gaseous natural gas.
2. gasification installation according to claim 1 is it is characterised in that also include being arranged on the cold-storage outside described heat exchanger
Device, described regenerator is connected with the outlet of described first refrigerating medium pipeline, and described regenerator is used for absorbing the described heat exchanger of outflow
The first refrigerating medium cold energy.
3. gasification installation according to claim 2 is it is characterised in that also include circulating pump, and described circulating pump is used for will be by
The first refrigerating medium after described regenerator absorbs cold energy is passed through in described second gas pipeline.
4. gasification installation according to claim 1 is it is characterised in that the number of the first refrigerating medium pipeline in described heat exchanger
Measure as multiple.
5. according to the arbitrary described gasification installation of claim 1-4 it is characterised in that also including：
Second refrigerating medium pipeline, the entrance of described second refrigerating medium pipeline is used for being passed through the first refrigerating medium, described second refrigerating medium
The outlet of pipeline is connected with the entrance of each described first refrigerating medium pipeline, and described gaseous natural gas line segments pass through described the
The side wall of two refrigerating medium pipelines；
Described first refrigerating medium is further adapted for absorbing the cold energy in described gaseous natural gas when flowing through described second refrigerating medium pipeline,
The temperature of gaseous natural gas is made to raise.
6. gasification installation according to claim 5 is it is characterised in that described second refrigerating medium pipeline and described gaseous state are natural
Trachea section axially vertical.
7. gasification installation according to claim 1 is it is characterised in that described first refrigerating medium is glycol water.
8. gasification installation according to claim 1 is it is characterised in that described second refrigerating medium is propane.
9. gasification installation according to claim 1 is it is characterised in that described second gas pipeline is U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620888613.8U CN205938522U (en) | 2016-08-16 | 2016-08-16 | Liquefied natural gas gasification equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620888613.8U CN205938522U (en) | 2016-08-16 | 2016-08-16 | Liquefied natural gas gasification equipment |
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| CN205938522U true CN205938522U (en) | 2017-02-08 |
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| CN201620888613.8U Active CN205938522U (en) | 2016-08-16 | 2016-08-16 | Liquefied natural gas gasification equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645247A (en) * | 2018-07-03 | 2018-10-12 | 中海油能源发展股份有限公司珠海冷能利用分公司 | A kind of comprehensive utilization cold energy of liquefied natural gas changes cooling system and method |
| CN109458554A (en) * | 2018-12-09 | 2019-03-12 | 大连海事大学 | A kind of LNG gasification peculiar to vessel and cold recovery exchange system and method |
| CN112393486A (en) * | 2020-11-06 | 2021-02-23 | 中国海洋石油集团有限公司 | Method for utilizing cold energy of liquefied natural gas |
-
2016
- 2016-08-16 CN CN201620888613.8U patent/CN205938522U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645247A (en) * | 2018-07-03 | 2018-10-12 | 中海油能源发展股份有限公司珠海冷能利用分公司 | A kind of comprehensive utilization cold energy of liquefied natural gas changes cooling system and method |
| CN109458554A (en) * | 2018-12-09 | 2019-03-12 | 大连海事大学 | A kind of LNG gasification peculiar to vessel and cold recovery exchange system and method |
| CN112393486A (en) * | 2020-11-06 | 2021-02-23 | 中国海洋石油集团有限公司 | Method for utilizing cold energy of liquefied natural gas |
| CN112393486B (en) * | 2020-11-06 | 2022-06-21 | 中国海洋石油集团有限公司 | Method for utilizing cold energy of liquefied natural gas |
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