CN107961686A - A kind of liquefied natural gas gas-liquid pre-mixing apparatus - Google Patents
A kind of liquefied natural gas gas-liquid pre-mixing apparatus Download PDFInfo
- Publication number
- CN107961686A CN107961686A CN201711066987.7A CN201711066987A CN107961686A CN 107961686 A CN107961686 A CN 107961686A CN 201711066987 A CN201711066987 A CN 201711066987A CN 107961686 A CN107961686 A CN 107961686A
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- CN
- China
- Prior art keywords
- jet tray
- outer barrel
- gas
- bog
- space
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
- B01F25/28—Jet mixers, i.e. mixers using high-speed fluid streams characterised by the specific design of the jet injector
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/70—Spray-mixers, e.g. for mixing intersecting sheets of material
- B01F25/72—Spray-mixers, e.g. for mixing intersecting sheets of material with nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/501—Mixing combustion ingredients, e.g. gases, for burners or combustion chambers
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a kind of liquefied natural gas gas-liquid pre-mixing apparatus, mainly by the outer barrel with end socket, jet tray and sprinkler composition；Jet tray sets three layers altogether, is respectively the first jet tray, the second jet tray and the 3rd jet tray；Outer barrel inner space above first jet tray is BOG cushion spaces, outer barrel inner space below first jet tray, between the second jet tray top is top gas-liquid mixed space, outer barrel inner space below second jet tray, between the 3rd jet tray top is lower part gas-liquid mixed space, and nozzle is installed on the nozzle mounting hole of every layer of jet tray；BOG cushion space outer barrels body sidewall is equipped with BOG entrances, and top gas-liquid mixed space outer barrel body sidewall is equipped with top LNG entrances, and lower part gas-liquid mixed space outer barrel body sidewall is equipped with lower part LNG entrances.The present invention using Multi-stage jet, repeatedly mix in the form of progress LNG and BOG premix be evenly distributed with, improve condensation efficiency.
Description
Technical field
The invention belongs to liquefied natural gas (LNG) processing technology field, a kind of liquefied natural gas (LNG) is related in particular to
Gas-liquid pre-mixing apparatus.
Background technology
For LNG boil-off gas (BOG) using when condensing recovery process again, after-condenser is the capital equipment in process system,
The central role taken over from the past and set a new course for the future is played in whole receiving station's operation, its major function is mainly to provide enough connect for BOG and LNG
The tactile time and space promotes BOG to be condensed into LNG and ensures the entrance pressure of high-pressure pump as the inlet buffer of LNG high-pressure pumps
Power.
LNG after-condensers belong to one kind of tower, and the gas-liquid contact component of its core is frequently with packing layer, common filler
Mainly there are random-stow filler Raschig ring, Pall ring and structured packing etc., BOG and LNG enters filler from the top of packing layer
Layer.BOG is directly related to the condensation efficiency of packing layer with distribution situations of the LNG in packing layer.Various heat transfers are found in practice
It is often unsatisfactory that material in mass transfer apparatus tower is evenly distributed with state.
The material of LNG after-condensers is evenly distributed with traditional method and enters BOG gas-phase spaces to carry out uniformly rear LNG to LNG, mixes
Enter packing layer afterwards and carry out condensation process, but traditional method condensation is still not enough fully, and gas-liquid mixed is also not uniform enough.
The content of the invention
The technical problem not uniform enough, condensation effect is not good enough, this hair are mixed with BOG in order to solve LNG existing for existing technology
It is bright to provide a kind of liquefied natural gas (LNG) gas-liquid pre-mixing apparatus.
Liquefied natural gas gas-liquid pre-mixing apparatus provided by the invention is mainly by the outer barrel with end socket, jet tray and nozzle
Composition；Jet tray sets three layers altogether, is arranged in parallel from top to bottom, respectively the first jet tray, the second jet tray and the 3rd jet tray,
Jet tray is equipped with nozzle mounting hole；Outer barrel inner space below end socket, above the first jet tray is BOG cushion spaces,
Outer barrel inner space below first jet tray, between the second jet tray top is top gas-liquid mixed space, and second sprays
Outer barrel inner space below plate, between the 3rd jet tray top is lower part gas-liquid mixed space；Nozzle is installed on every layer of spray
Penetrate on the nozzle mounting hole of plate, below jet tray；BOG cushion space outer barrels body sidewall is equipped with BOG entrances, top gas-liquid
Blending space outer barrel body sidewall is equipped with top LNG entrances, and lower part gas-liquid mixed space outer barrel body sidewall enters equipped with lower part LNG
Mouthful.
The entrance of top LNG entrances and lower part LNG entrances as incoming LNG, two LNG entrances differ 180 ° of angle of circumference positions
In on outer barrel body sidewall, the diameter of LNG inlet tubes should control LNG stream speed in the range of 0.5~1m/s.BOG entrances are located at BOG
Cushion space side surface upper part, should control the BOG flow velocitys into BOG cushion spaces in the range of 2~4m/s.
BOG cushion spaces are the cylindrical space that top is dome, its height is 0.3~0.5 times of outer barrel diameter, with
Reach the buffering effect of good BOG.Top gas-liquid mixed space is cylindrical space, and the mixing as top LNG and BOG buffers
Space, its height are 0.1~0.3 times of outer barrel diameter.Lower part LNG cushion spaces are cylindrical space, as lower part LNG with
The mixing cushion space of BOG, its height are 0.1~0.3 times of outer barrel diameter.
First jet tray, the second jet tray and the 3rd injection harden structure are identical, and the nozzle mounting hole opened up thereon is in positive three
Triangular arrangement is covered with whole jet tray plate face.The percent opening of the upper nozzle mounting hole of jet tray should be more than 65%, perforate number
No less than 50.
Nozzle is made of the cylindrical tube of its upper part and the negative throat noz(zle) of its underpart, and the necking down ratio of nozzle should maintain nozzle
Gas-liquid apparent velocity in more than 5m/s, to form good gas-liquid jet stream effect.
Advantages of the present invention is to have carried out effective buffering to incoming LNG and BOG, the shape using Multi-stage jet, repeatedly mixed
The premix that formula carries out LNG and BOG is evenly distributed with, and is improved condensation efficiency, is worked well.
Brief description of the drawings
Fig. 1 is the structure diagram of gas-liquid pre-mixing apparatus of the present invention；
Fig. 2 is the structure diagram of jet tray in Fig. 1；
Fig. 3 is the structure diagram of nozzle in Fig. 1.
In figure：1- outer barreies, 2-BOG entrances, 3- tops LNG entrances, 4- lower parts LNG entrances, the first jet trays of 5-, 6-
Two jet trays, the 3rd jet trays of 7-, 8- nozzles, 9-BOG cushion spaces, 10- tops gas-liquid mixed space, 11- lower parts gas-liquid are mixed
Close space, 12- nozzle mounting holes, 13- cylindrical tubes, 14- negative throat noz(zle)s.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
Referring to Fig. 1~3, gas-liquid pre-mixing apparatus of the invention is made of the outer barrel 1 with end socket, jet tray and nozzle 8；
Jet tray sets three layers altogether, is arranged in parallel from top to bottom, is respectively the first jet tray 5, the second jet tray 6 and the 3rd jet tray 7, sprays
Penetrate plate and be equipped with nozzle mounting hole 12 (see Fig. 2)；Delay for BOG outer barrel inner space below end socket, above the first jet tray 5
Space 9 is rushed, the outer barrel inner space between the lower section of the first jet tray 5, the top of the second jet tray 6 is top gas-liquid mixed space
10, the outer barrel inner space between the lower section of the second jet tray 6, the top of the 3rd jet tray 7 is lower part gas-liquid mixed space 11；Spray
First 8 are installed on the nozzle mounting hole of every layer of jet tray, below jet tray；9 outer barrel body sidewall of BOG cushion spaces is equipped with
BOG entrances 2,10 outer barrel body sidewall of top gas-liquid mixed space are equipped with top LNG entrances 3, outside lower part gas-liquid mixed space 11
Cylinder lateral wall is equipped with lower part LNG entrances 4.
Fig. 3 is the structure diagram of nozzle, and nozzle is by the cylindrical tube 13 of its upper part and the negative throat noz(zle) 14 of its underpart
Composition.
The present invention the course of work be：BOG first enters 9 laggard row buffering of BOG cushion spaces through BOG entrances 2, buffers it
BOG afterwards uniformly sprays into top gas-liquid mixed space 10 through the nozzle 8 on the first jet tray 5；LNG enters through top LNG entrances 3
Top gas-liquid mixed space 10, the BOG and LNG that jet stream enters top gas-liquid mixed space 10 are rushed in top gas-liquid mixed space 10
Hit after mixing and spray into lower part gas-liquid mixed space 11 downwards through the nozzle 8 on the second jet tray 6；From under the entrance of lower part LNG entrances 4
The LNG in portion gas-liquid mixed space 11 is mixed again with the gas-liquid mixture from the second jet tray 6 in lower part gas-liquid mixed space 11
Uniformly it is injected on the packing layer below pre-mixing apparatus through the nozzle 8 on the 3rd jet tray 7 after conjunction.
Claims (7)
- A kind of 1. liquefied natural gas gas-liquid pre-mixing apparatus, it is characterised in that：Mainly by the outer barrel with end socket, jet tray and spray Head composition；Jet tray sets three layers altogether, is arranged in parallel from top to bottom, is respectively the first jet tray, the second jet tray and the 3rd injection Plate, jet tray are equipped with nozzle mounting hole；Outer barrel inner space below end socket, above the first jet tray is empty for BOG bufferings Between, the outer barrel inner space below the first jet tray, between the second jet tray top is top gas-liquid mixed space, and second sprays Penetrate below plate, the outer barrel inner space between the 3rd jet tray top is lower part gas-liquid mixed space；Nozzle is installed on every layer On the nozzle mounting hole of jet tray, below jet tray；BOG cushion space outer barrels body sidewall is equipped with BOG entrances, top gas Liquid blending space outer barrel body sidewall is equipped with top LNG entrances, and lower part gas-liquid mixed space outer barrel body sidewall is equipped with lower part LNG Entrance.
- 2. pre-mixing apparatus according to claim 1, it is characterised in that：The top LNG entrances and lower part LNG entrance phases Poor 180 ° of angles of circumference are located on outer barrel body sidewall.
- 3. pre-mixing apparatus according to claim 1, it is characterised in that：The BOG cushion spaces are that top is dome Cylindrical space, its height are 0.3~0.5 times of outer barrel diameter.
- 4. pre-mixing apparatus according to claim 1, it is characterised in that：The top gas-liquid mixed space is cylindrical empty Between, its height is 0.1~0.3 times of outer barrel diameter.
- 5. pre-mixing apparatus according to claim 1, it is characterised in that：The lower part LNG cushion spaces are cylindrical empty Between, its height is 0.1~0.3 times of outer barrel diameter.
- 6. pre-mixing apparatus according to claim 1, it is characterised in that：First jet tray, the second jet tray and Three injection harden structures are identical, and the nozzle mounting hole opened up thereon is covered with whole jet tray plate face in equilateral triangle arrangement.
- 7. pre-mixing apparatus according to claim 1, it is characterised in that：The nozzle by its upper part cylindrical tube and The negative throat noz(zle) composition of its underpart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711066987.7A CN107961686A (en) | 2017-11-03 | 2017-11-03 | A kind of liquefied natural gas gas-liquid pre-mixing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711066987.7A CN107961686A (en) | 2017-11-03 | 2017-11-03 | A kind of liquefied natural gas gas-liquid pre-mixing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107961686A true CN107961686A (en) | 2018-04-27 |
Family
ID=62000814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711066987.7A Pending CN107961686A (en) | 2017-11-03 | 2017-11-03 | A kind of liquefied natural gas gas-liquid pre-mixing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107961686A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4162970A (en) * | 1976-07-31 | 1979-07-31 | Bayer Aktiengesellschaft | Injectors and their use in gassing liquids |
| CN200960489Y (en) * | 2006-10-09 | 2007-10-17 | 西安交通大学 | Interleaving spraying type liquid atomization nozzle |
| CN101484236A (en) * | 2005-12-16 | 2009-07-15 | 环球油品公司 | Co-current vapor-liquid contacting apparatus |
| CN102463058A (en) * | 2010-11-15 | 2012-05-23 | 张敏威 | Fluid mixer |
| CN102802780A (en) * | 2009-04-08 | 2012-11-28 | 环球油品公司 | Vapor-liquid contacting apparatuses with vortex contacting stages |
| CN103639082A (en) * | 2013-12-24 | 2014-03-19 | 湖州华祥不锈钢管有限公司 | Gas-liquid mixing sprayer |
| CN105087055A (en) * | 2015-09-09 | 2015-11-25 | 陕西美斯林能源科技研究院 | Coal tar and hydrogen mixing device used in front of heating furnace and method |
| CN106861222A (en) * | 2015-12-10 | 2017-06-20 | 中国石化工程建设有限公司 | Boil-off gas after-condenser |
-
2017
- 2017-11-03 CN CN201711066987.7A patent/CN107961686A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4162970A (en) * | 1976-07-31 | 1979-07-31 | Bayer Aktiengesellschaft | Injectors and their use in gassing liquids |
| CN101484236A (en) * | 2005-12-16 | 2009-07-15 | 环球油品公司 | Co-current vapor-liquid contacting apparatus |
| CN200960489Y (en) * | 2006-10-09 | 2007-10-17 | 西安交通大学 | Interleaving spraying type liquid atomization nozzle |
| CN102802780A (en) * | 2009-04-08 | 2012-11-28 | 环球油品公司 | Vapor-liquid contacting apparatuses with vortex contacting stages |
| CN102463058A (en) * | 2010-11-15 | 2012-05-23 | 张敏威 | Fluid mixer |
| CN103639082A (en) * | 2013-12-24 | 2014-03-19 | 湖州华祥不锈钢管有限公司 | Gas-liquid mixing sprayer |
| CN105087055A (en) * | 2015-09-09 | 2015-11-25 | 陕西美斯林能源科技研究院 | Coal tar and hydrogen mixing device used in front of heating furnace and method |
| CN106861222A (en) * | 2015-12-10 | 2017-06-20 | 中国石化工程建设有限公司 | Boil-off gas after-condenser |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180427 |