CN105020578B - A kind of circulating cryogenic liquid gasification installation - Google Patents
A kind of circulating cryogenic liquid gasification installation Download PDFInfo
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- CN105020578B CN105020578B CN201510408500.3A CN201510408500A CN105020578B CN 105020578 B CN105020578 B CN 105020578B CN 201510408500 A CN201510408500 A CN 201510408500A CN 105020578 B CN105020578 B CN 105020578B
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- liquid
- accumulating device
- gasifier
- gasification
- pipe
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Abstract
A kind of circulating cryogenic liquid gasification installation, it is related to cryogenic liquid gasification installation technical field, including gasifier and liquid accumulating device, the import of gasifier is connected with feed liquor main pipe, the outlet of gasifier and the air inlet of liquid accumulating device are connected, liquid accumulating device is provided with gas vent, the liquid return hole of liquid accumulating device is connected by the import of liquid back pipe road and gasifier, so that the liquid in liquid accumulating device can be returned in gasifier, the bypass duct for the liquid make-up into liquid accumulating device is additionally provided with liquid accumulating device, liquid in liquid accumulating device is remained in the range of the liquid level of setting by liquid back pipe road and bypass duct, so as to which the vapor liquid equilibrium state under operating pressure is in liquid accumulating device all the time.The present invention can make exit gas temperature control within the scope of a stable temperature, and for follow-up temperature, accurately control provides guarantee.
Description
Technical field
The present invention relates to cryogenic liquid gasification installation technical field, more particularly to a kind of circulating cryogenic liquid gasification dress
Put.
Background technology
In cryogenic liquid gasification, air-heating type gasifier is a kind of conventional pattern, and the gasifier of the pattern has structure
Simply, it is easy to the advantage safeguarded, has the disadvantage that the intensity of gasification is not high, influenceed larger by gas temperature, can be caused under harsh operating mode
Gasify incomplete situation.
In the prior art, for the accurate control aspect of cryogenic liquid gasification temperature, usually gas by gasifier after
The temperature of setting is heated to by heater again, because gasifier exit gas temperature can change with air temperature variations,
Influenceed larger by weather, temperature fluctuation can be caused big, so as to influence following temperature to adjust, it is impossible to make gasification temperature control at one
Within the scope of relatively stable temperature.
The content of the invention
It is an object of the invention to provide a kind of circulating cryogenic liquid gasification installation, to overcome conventional air-heating type gasifier
Outlet Gas Temperature fluctuation is big, the problem of can not control within the scope of a stable temperature.
To achieve the above object, the technical scheme is that：A kind of circulating cryogenic liquid gasification installation, including gasification
Device and liquid accumulating device, the import of gasifier are connected with feed liquor main pipe, and the outlet of gasifier and the air inlet of liquid accumulating device are connected, liquid accumulating device
Gas vent is provided with, the liquid return hole of liquid accumulating device is connected by the import of liquid back pipe road and gasifier, so that the liquid in liquid accumulating device
Body can be returned in gasifier, be additionally provided with liquid accumulating device in the bypass duct for the liquid make-up into liquid accumulating device, liquid accumulating device
Liquid is remained in the range of the liquid level of setting by liquid back pipe road and bypass duct, so as to be in work in liquid accumulating device all the time
Vapor liquid equilibrium state under pressure.
The gasification installation also includes being provided with liquid level sensor and controller, level sensing in control system, control system
Device is used to detecting liquid level information in liquid accumulating device, and controller receives the liquid level signal of liquid level sensor, and by level sensing value with
Level set value compares：When level sensing value is more than or equal to highest level set value, controller turns on liquid back pipe road, makes product
Liquid in liquid device is returned in gasifier；When level sensing value is less than or equal to minimum liquid level setting value, controller makes shunt valve
Road is turned on, with the liquid make-up into liquid accumulating device.
The liquid back pipe road is provided with circulating pump and magnetic valve II, and bypass duct is provided with magnetic valve I.
The gasifier includes upper header, lower collecting box and multiple gasification pipes, and upper header will be delivered to the liquid of gasifier
Collect, and liquid is distributed to each gasification pipe, the liquid in gasifier is exchanged heat and occurred in each gasification pipe
Gas collection in gasification, each gasification pipe enters liquid accumulating device in lower collecting box, and by the outlet set on lower collecting box
It is interior.
Further, the upper header is provided with liquid distribution device with gasification pipe junction, and liquid distribution device is to entering
The liquid entered into gasification pipe is disperseed, and scattered liquid is integrally entered gasification pipe in certain rotation direction.It is described
It is provided with multiple fluid passages in liquid distribution device side by side from top to bottom, the outlet of each fluid passage deviates with respect to its import
Vertical direction is set, and deviates equal angular with the sun or counterclockwise in the horizontal plane.
Further, screw thread is provided with the inwall of the gasification pipe, to make to enter the liquid in gasification pipe
Body flows and exchanged heat in a spiral manner.The rotation direction of the gasification pipe internal thread and the liquid come out from liquid distribution device
Rotation direction it is consistent.
Beneficial effect：
1st, the use of liquid accumulating device adds the operating mode scope of application of the present invention, by controlling the stabilization of liquid level in liquid accumulating device,
So that the vapor liquid equilibrium state under operating pressure is in liquid accumulating device all the time, so that the exit gas of gasifier is passing through hydrops
It can be controlled after device in a metastable temperature range, for follow-up temperature, accurately control provides guarantee, especially fits
Close the system that cryogenic gas needs accurate temperature to control.
2nd, screw type liquid distribution apparatus of the invention can be such that cryogenic liquid is uniformly distributed according to certain rotating direction angle
In gasifier inner surface of pipeline, increase contact area, and form turbulent flow, enhance heat-transfer effect.In gasifier pipeline is employed
Helical pipe, coordinates screw type liquid distributor, further enhances heat transfer characteristic, improve heat transfer effect, so as to improve
The intensity of gasification of gasifier.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the structural representation of the liquid distribution device of the present invention；
Fig. 3 is Fig. 2 A direction views.
Marked in figure：1-1, check-valves I, 1-2, check-valves II, 2, feed liquor main pipe, 3, upper header, 4, gasification pipe, 5,
Lower collecting box, 6, liquid accumulating device, 7, circulating pump, 8-1, magnetic valve I, 8-2, magnetic valve II, 9, liquid distribution device, 9-1, liquid lead to
Road, 10, controller.
Specific implementation method
As shown in figure 1, a kind of circulating cryogenic liquid gasification installation, including gasifier and liquid accumulating device 6, gasifier includes upper
Header 3, lower collecting box 5 and multiple gasification pipes 4, upper header 3 and lower collecting box 5 are separately designed as pipeline configuration closed at both ends, two
Multiple perforates are equipped with person's tube wall, the number of perforate is identical with the number of gasification pipe 4, to connect gasification pipe 4, the first line of a couplet
Case 3 is provided with gasifier import, and gasifier import is connected with feed liquor main pipe 2, and lower collecting box 5 is provided with gasifier exit, gasifier
Outlet is connected with the air inlet of liquid accumulating device 6, and upper header 3 collects the liquid for being delivered to gasifier, and liquid is distributed to each
Liquid in gasification pipe 4, gasifier is carried out in each gasification pipe 4 in the concurrent angerization that exchanges heat, each gasification pipe 4
Gas collection is entered in liquid accumulating device 6 in lower collecting box 5, and by the outlet set on lower collecting box 5, is entered in liquid accumulating device 6
The gas vent outflow that is set from the top of liquid accumulating device 6 of gas.
Liquid accumulating device 6 is provided with liquid return hole, liquid return hole provided with a connecting tube, and the connecting tube passes through two-way pipeline in parallel
It is respectively connecting in feed liquor main pipe 2, the entrance point of feed liquor main pipe 2 is provided with a 1-1 of check-valves I, wherein pipeline all the way（Referred to as manage
Road II）Be provided with circulating pump 7, the 8-2 of magnetic valve II and the 1-2 of check-valves II, the liquid in liquid accumulating device 6 successively through its liquid return hole at
Connecting tube, pipeline II and part feed liquor main pipe 2 are returned in gasifier, the pipeline formation liquid back pipe road that this process liquids is flowed through；Separately
Pipeline all the way（Referred to as pipeline I）The 8-1 of magnetic valve I is provided with, the 8-1 of magnetic valve I is opened, the cryogenic liquid that the conveying of feed liquor main pipe 2 comes
Through the connecting tube at pipeline I and the liquid return hole of liquid accumulating device 6 into liquid accumulating device 6 liquid make-up, part feed liquor main pipe 2, pipeline I and hydrops
Connecting tube formation bypass duct at the liquid return hole of device 6.Due to the 1-1 of check-valves I and the 1-2 of check-valves II effect, liquid back pipe road and
The flow direction of fluid is single in bypass duct.Liquid in liquid accumulating device 6 is remained at by liquid back pipe road and bypass duct
In the range of the liquid level of setting, so as to the vapor liquid equilibrium state under operating pressure is in liquid accumulating device 6 all the time, so as to ensure from hydrops
The temperature stabilization of the gas of outflow is in the range of a stationary temperature in device 6.The gasification temperature of cryogenic liquid has with pressure
One-to-one relationship, i.e., under a given pressure, cryogenic liquid vapor-liquid two phases temperature is fixed, so as to maintain
Liquid accumulating device Outlet Gas Temperature is constant under vapor-liquid equilibrium state.
The conducting of liquid back pipe road and bypass duct is provided with liquid level sensor and control in control system control, control system
Device, liquid level sensor is used to detect the liquid level information in liquid accumulating device, and controller 10 receives the liquid level signal of liquid level sensor, and will
Level sensing value is compared with level set value：When level sensing value is more than or equal to highest level set value, controller makes circulation
Pump 7 starts, the 8-2 of magnetic valve II is opened, the conducting of liquid back pipe road, and the liquid in liquid accumulating device is returned in gasifier；When level sensing value
During less than or equal to minimum liquid level setting value, controller opens the 8-1 of magnetic valve I, bypass duct conducting, the replenisher into liquid accumulating device
Body.
As shown in Figures 2 and 3, further, the upper header 3 is provided with liquid distribution device with the junction of gasification pipe 4
9, it is provided with multiple fluid passage 9-1 in liquid distribution device 9 side by side from top to bottom, each fluid passage 9-1 outlet is with respect to it
Import deviates vertical direction setting, and deviates same angular with the sun or counterclockwise in the horizontal plane
Degree.9 pairs of liquid entered in gasification pipe 4 of liquid distribution device of the present invention are disperseed, and make scattered liquid overall
Enter gasification pipe 4 in certain rotation direction, liquid can be evenly distributed on the inwall of gasification pipe 4 according to certain rotating direction angle
On, increase contact area, form turbulent flow, enhance heat-transfer effect.Further, gasification pipe 4 is using three-dimensional inside spin knot
Structure, screw thread is provided with the inwall of gasification pipe 4 so that the liquid entered in gasification pipe flows in a spiral manner goes forward side by side
Row heat exchange, the rotation direction of liquid of the rotation direction of gasification pipe internal thread with being come out from liquid distribution device is consistent, the inclination angle of screw thread and
Liquid is consistent from the inclination angle that liquid distribution device enters gasification pipe, the gasification pipe and liquid distribution of female thread structure of the present invention
Device is used cooperatively, and can further increase turbulent flow of the cryogenic liquid in gasification pipe, and enhanced heat exchange characteristic improves heat exchange effect
Really.
The bypass duct magnetic valve 8-1 is that gasifier is opened when initial launch or operating condition deviate setting operating mode
It is dynamic, to ensure that system is normally run.In system initial start up phase, bypass duct solenoid 8-1 is opened, cryogenic liquid enters
In liquid accumulating device 6, until closing bypass duct when reaching initial liquid level H0.Gas in gasification pipe 4 is entered by lower collecting box 5 to be accumulated
The gas temperature that cryogenic liquid in liquid device 6, with liquid accumulating device 6 flowed out after heat exchange is the saturation temperature under operating pressure.
In vaporization ability overrate, cryogenic liquid is constantly gasified in liquid accumulating device 6, in liquid level as little as lower limit value H2（I.e.
Minimum liquid level setting value）When, bypass duct solenoid 8-1 is opened, liquid in liquid accumulating device 6 is supplemented.
In supplied cryogenic liquid vaporization ability normal more than gasifier, the magnetic valve 8-1 of bypass duct, which is in, to close
State, the medium entered by lower collecting box 5 in liquid accumulating device 6 is that the liquid in solution-airmixture, liquid accumulating device 6 can gradually be assembled, when
More than liquid accumulating device high-value H1（That is highest level set value）When, circulating pump 7 and magnetic valve 8-2 are opened simultaneously, in liquid accumulating device
Cryogenic liquid enters gasifier cycle gasification through liquid back pipe road, until the liquid in liquid accumulating device reaches defined position.Liquid back pipe
When road is opened, check-valves 1-1 prevents the higher liquid of pressure from being flowed back to feed liquor main pipe 2.
The present invention can ensure under various operating modes the Outlet Gas Temperature after cryogenic liquid gasification be in one it is stable
In temperature range, smaller, almost one steady state value is fluctuated.Avoid the Outlet Gas Temperature fluctuation of common gasifier greatly, no
Stable the problem of, prerequisite is provided for the accurate control of gas temperature.
Claims (8)
1. a kind of circulating cryogenic liquid gasification installation, it is characterised in that：Including gasifier and liquid accumulating device, the import of gasifier connects
Feed liquor main pipe is connected to, the outlet of gasifier and the air inlet of liquid accumulating device are connected, liquid accumulating device is provided with gas vent, time of liquid accumulating device
Liquid mouthful is connected by the import of liquid back pipe road and gasifier, so that the liquid in liquid accumulating device can be returned in gasifier, liquid accumulating device
On the liquid that is additionally provided with bypass duct for from the liquid make-up to liquid accumulating device, liquid accumulating device pass through liquid back pipe road and bypass duct
Remain in the range of the liquid level of setting, so as to be in the vapor liquid equilibrium state under operating pressure in liquid accumulating device all the time.
2. a kind of circulating cryogenic liquid gasification installation as claimed in claim 1, it is characterised in that：The gasifier includes upper
Header, lower collecting box and multiple gasification pipes, upper header collect the liquid for being delivered to gasifier, and liquid is distributed to each gas
Liquid in change pipeline, gasifier carries out the gas in the concurrent angerization that exchanges heat, each gasification pipe in each gasification pipe
Collection is entered in liquid accumulating device in lower collecting box, and by the outlet set on lower collecting box.
3. a kind of circulating cryogenic liquid gasification installation as claimed in claim 2, it is characterised in that：The upper header and gasification
Pipeline junction is provided with liquid distribution device, and liquid distribution device is disperseed to the liquid entered in gasification pipe, and is made
Scattered liquid integrally enters gasification pipe in certain rotation direction.
4. a kind of circulating cryogenic liquid gasification installation as claimed in claim 3, it is characterised in that：The liquid distribution device
Inside it is provided with multiple fluid passages side by side from top to bottom, the outlet of each fluid passage deviates vertical direction with respect to its import and set
Put, and deviate equal angular with the sun or counterclockwise in the horizontal plane.
5. a kind of circulating cryogenic liquid gasification installation as described in claim 3 or 4, it is characterised in that：The gasification pipe
Inwall on be provided with screw thread, flow and exchanged heat in a spiral manner to make to enter the liquid in gasification pipe.
6. a kind of circulating cryogenic liquid gasification installation as claimed in claim 5, it is characterised in that：Spiral shell in the gasification pipe
The rotation direction of liquid of the rotation direction of line with being come out from liquid distribution device is consistent.
7. a kind of circulating cryogenic liquid gasification installation as claimed in claim 1, it is characterised in that：Also include control system,
Liquid level sensor and controller are provided with control system, liquid level sensor is used to detect the liquid level information in liquid accumulating device, controller
The liquid level signal of liquid level sensor is received, and level sensing value is compared with level set value：When level sensing value is more than or equal to
During highest level set value, controller turns on liquid back pipe road, the liquid in liquid accumulating device is returned in gasifier；Work as level sensing
When value is less than or equal to minimum liquid level setting value, controller turns on bypass duct, with the liquid make-up into liquid accumulating device.
8. a kind of circulating cryogenic liquid gasification installation as claimed in claim 7, it is characterised in that：The liquid back pipe Lu Shangshe
There are circulating pump and magnetic valve II, bypass duct is provided with magnetic valve I.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510408500.3A CN105020578B (en) | 2015-07-14 | 2015-07-14 | A kind of circulating cryogenic liquid gasification installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510408500.3A CN105020578B (en) | 2015-07-14 | 2015-07-14 | A kind of circulating cryogenic liquid gasification installation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105020578A CN105020578A (en) | 2015-11-04 |
| CN105020578B true CN105020578B (en) | 2017-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510408500.3A Expired - Fee Related CN105020578B (en) | 2015-07-14 | 2015-07-14 | A kind of circulating cryogenic liquid gasification installation |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715947B (en) * | 2016-03-14 | 2017-12-19 | 江苏德邦工程有限公司 | LNG gas stations refueling system and gas charging control method |
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| CN1518653A (en) * | 2001-05-17 | 2004-08-04 | 国际壳牌研究有限公司 | Steam heating apparatus |
| CN203758351U (en) * | 2014-01-16 | 2014-08-06 | 中国船舶重工集团公司第七二五研究所 | Turbolator for LNG open frame type gasifying device |
| CN104266165A (en) * | 2014-09-17 | 2015-01-07 | 中科华核电技术研究院有限公司 | Once-through steam generator parallel pipe group throttling element |
| CN104548626A (en) * | 2013-10-15 | 2015-04-29 | 中国石油化工股份有限公司 | Liquid ammonia evaporation technology and device thereof for flue gas desulphurization system |
| CN204852912U (en) * | 2015-07-14 | 2015-12-09 | 河南科技大学 | Circulating cryogenic liquids gasification equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002340296A (en) * | 2001-05-16 | 2002-11-27 | Sumitomo Precision Prod Co Ltd | Liquefied gas vaporizing and heating device |
| US7900451B2 (en) * | 2007-10-22 | 2011-03-08 | Ormat Technologies, Inc. | Power and regasification system for LNG |
-
2015
- 2015-07-14 CN CN201510408500.3A patent/CN105020578B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1518653A (en) * | 2001-05-17 | 2004-08-04 | 国际壳牌研究有限公司 | Steam heating apparatus |
| CN104548626A (en) * | 2013-10-15 | 2015-04-29 | 中国石油化工股份有限公司 | Liquid ammonia evaporation technology and device thereof for flue gas desulphurization system |
| CN203758351U (en) * | 2014-01-16 | 2014-08-06 | 中国船舶重工集团公司第七二五研究所 | Turbolator for LNG open frame type gasifying device |
| CN104266165A (en) * | 2014-09-17 | 2015-01-07 | 中科华核电技术研究院有限公司 | Once-through steam generator parallel pipe group throttling element |
| CN204852912U (en) * | 2015-07-14 | 2015-12-09 | 河南科技大学 | Circulating cryogenic liquids gasification equipment |
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Granted publication date: 20170728 Termination date: 20190714 |