CN106641703A - Shipping and unshipping system of low-temperature liquid-state ethylene storage tank - Google Patents
Shipping and unshipping system of low-temperature liquid-state ethylene storage tank Download PDFInfo
- Publication number
- CN106641703A CN106641703A CN201611251507.XA CN201611251507A CN106641703A CN 106641703 A CN106641703 A CN 106641703A CN 201611251507 A CN201611251507 A CN 201611251507A CN 106641703 A CN106641703 A CN 106641703A
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- Prior art keywords
- ship
- pipeline
- low temperature
- ethylene
- low
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D9/00—Apparatus or devices for transferring liquids when loading or unloading ships
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/013—Single phase liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0107—Single phase
- F17C2225/013—Single phase liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0135—Pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/0105—Ships
Abstract
The invention provides a shipping and unshipping system of a low-temperature liquid-state ethylene storage tank. The ethylene storage tank is connected with a shipping pump and a conveying pump; the shipping pump is connected with a shipping and unshipping pipeline; the shipping and unshipping pipeline is connected with a liquid conveying arm of a wharf; the liquid conveying arm is connected with a low-temperature ship berthed on the wharf; the conveying pump is connected with a pre-cooling pipeline and the other end of the pre-cooling pipeline is connected with the shipping and unshipping pipeline of the wharf, wherein low-temperature ethylene stored in the low-temperature ethylene storage tank is pressurized through the shipping pump and then is conveyed; the low-temperature ethylene is conveyed to the communicated low-temperature ship for storage through the shipping and unshipping pipeline and the liquid conveying arm, thus forming a shipping system; the low-temperature ethylene stored in the low-temperature ship is pressurized through the pump in the ship and then is conveyed, the liquid-state low-temperature ethylene is conveyed to the communicated ethylene storage tank for storage through the liquid conveying arm and the shipping and unshipping pipeline, thus forming an unshipping system; less low-temperature ethylene in the low-temperature ethylene storage tank passes through the wharf from the pre-cooling pipeline of a tank region and then passes through the shipping and unshipping pipeline, and then is returned back to the low-temperature ethylene storage tank; before shipping and unshipping operation, the shipping and unshipping pipeline is subjected to low-temperature pre-cooling in advance and a pre-cooling system is formed. The shipping and unshipping system has the characteristics of reasonable and simple structure, convenience and reliable in utilization, capabilities of saving a lot of investment and saving energy sources and the like.
Description
Technical field
The present invention relates to a kind of shipment of low-temperature liquid ethylene basin and ship-unloading system, belong to low-temperature liquid ethylene storage
Hide and conveying technology field.
Background technology
At present, most of low temperature ethylene is to transport to domestic harbour by low temperature shipping, then by arm of infusing, unloading pipeline,
By low-temperature liquid ethylene discharging to basin.With domestic MTO（The dilute hydrocarbon of methyl alcohol system）The foundation of factory, low-temperature liquid ethylene can also
Obtain by way of gaseous ethylene liquefies, this operative liquid ethene can be carried out by way of low-temperature tanker and cryostat, ship
Take out.Only tens tons of the general capacity of low-temperature tanker, and the capacity of cryostat, ship sets up a set of shipment up to a few kiloton to tons up to ten thousand
System not only can transport more substantial low temperature ethylene, and liquid ethylene can be transported to farther area.
Traditional cryogenic liquid（Such as LNG）Shipment and ship-unloading system generally require a vapor delivery line and a liquid-phase tube
Line, and a feed-line is often up to several kilometers, pipeline adds the transfusion arm of upper terminal and valve, pipe insulation etc., often needs
Spend tens million of, need larger investment.Using this shipment herein and ship-unloading system, shipment and unloading process only need
One pipeline and a transfusion arm, save substantial amounts of investment.
The content of the invention
It is an object of the invention to overcome the shortcomings of that prior art is present, and provide a kind of system composition rationally, simply, make
With convenient and reliable, great amount of investment, the shipment of the low-temperature liquid ethylene basin of energy saving and ship-unloading system can be saved.
The purpose of the present invention a kind of shipment of low-temperature liquid ethylene basin and is unloaded by following technical solution completing
Boat system, it mainly includes ship-loading system, ship-unloading system and chilldown system, described ethene basin with load pump and delivery pump phase onto ship
Connection, shipment pump is connected with handling ship pipeline, and handling ship pipeline is connected with the transfusion arm of harbour, and transfusion arm is low with pier
Warm ship connection, delivery pump is connected with precooling pipeline, and the precooling pipeline other end is connected with the handling ship pipeline of harbour, wherein：Storage
Low temperature ethylene in low temperature ethylene basin is sent by shipment pump pressurization, through loading and unloading ship pipeline, transfusion arm, by low temperature ethylene
It is delivered in the low temperature ship of connection and stores and constitute described ship-loading system；The low temperature ethylene of storage is by ship in low temperature ship
Pump pressurization is sent, and through arm of infusing, handling ship pipeline, liquid low temperature ethene is delivered in the ethene basin of connection and is stored and is constituted
Described ship-unloading system；A small amount of low temperature ethylene in low temperature ethylene basin from tank field precooling pipeline through harbour, then through handling
Ship pipeline, returns in low temperature ethylene storage, before shipment with unloading operation, in advance handling ship pipeline is carried out into low temperature precooling, and structure
Into described chilldown system.
As preferred：Described handling ship pipeline is bi-directional design, while the shipment pipeline and unloading for ship-loading system
The unloading pipeline of system；Described transfusion arm also takes bi-directional design, while the liquid phase for ship-loading system and ship-unloading system is defeated
Liquid arm；
The cryogenic liquid tank is configured with one for giving basin tonifying Qi, maintains the tank field gasifier of service pressure；Low temperature
Liquid storage tank is also configured with the ethene reliquefaction installation of a guarantee ethene basin service pressure.
The present invention has system composition rationally, simply, easy to use and reliable, can save the spies such as great amount of investment, energy saving
Point.
Description of the drawings
Fig. 1 is the principle schematic of the present invention.
Label in figure is：Harbour transfusion arm 1, handling ship pipeline 2, precooling pipeline 3, low temperature ethylene basin 4, shipment pump 5,
Delivery pump 6, gasification system 7, re-liquefied system 8；Unloading pipeline stop valve V1, shipment pipeline stop valve V2, gasification system are adjusted
Valve V3, harbour transfusion arm stop valve V4, harbour transfusion arm by-passing valve V5, precooling pipeline regulating valve V6.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention will be described in detail：Shown in Fig. 1, a kind of low temperature liquid second of the present invention
The shipment of alkene basin and ship-unloading system, it mainly includes ship-loading system, ship-unloading system and chilldown system, described ethene basin 4
It is connected with shipment pump 5 and delivery pump 6, shipment pump 5 is connected with handling ship pipeline 2, loads and unloads the transfusion arm 1 of ship pipeline 2 and harbour
Connection, transfusion arm 1 is connected with the low temperature ship of pier, and delivery pump 6 is connected with precooling pipeline 3, the other end of precooling pipeline 3 and code
The handling ship pipeline 2 of head connects, wherein：The low temperature ethylene being stored in low temperature ethylene basin 4 is sent by the shipment pressurization of pump 5,
Through loading and unloading ship pipeline 2, transfusion arm 1, low temperature ethylene is delivered in the low temperature ship of connection and stores and constitute described shipment system
System；The low temperature ethylene of storage is sent by the pump pressurization on ship in low temperature ship, through arm 1 of infusing, handling ship pipeline 2, by liquid
Low temperature ethylene is delivered to and store in the ethene basin 4 of connection and constitute described ship-unloading system；It is a small amount of low in low temperature ethylene basin 4
Warm ethene, through harbour, then through handling ship pipeline 2, is returned in low temperature ethylene basin 4 from tank field precooling pipeline 3, shipment with
Before unloading operation, in advance handling ship pipeline 2 is carried out into low temperature precooling, and constitute described chilldown system.
Shown in figure, described handling ship pipeline is bi-directional design, while the shipment pipeline and unloading for ship-loading system
The unloading pipeline of system；Described transfusion arm also takes bi-directional design, while the liquid phase for ship-loading system and ship-unloading system is defeated
Liquid arm；
The cryogenic liquid tank is configured with one for giving basin tonifying Qi, maintains the tank field gasifier of service pressure；Low temperature
Liquid storage tank is also configured with the ethene reliquefaction installation of a guarantee ethene basin service pressure.
Embodiment：It is of the present invention handling ship pipeline and harbour transfusion arm adopt bi-directional design, handling ship pipeline and
All of valve and instrument and metering system all take two-way flow to design on transfusion arm so that liquid in handling ship pipeline
Flowing can be realized two-way.In tank field, handling ship pipeline is divided into shipment and two pipelines that unload, in unloading pipeline and shipment pipe
Switch valve V1 and V2 are respectively provided with line, liquid crossfire during preventing shipment process and unloading；Precooling is set after delivery pump
Pipeline, before shipment with unloading, by the low-temperature liquid ethylene of V6 precooling pipeline regulating valve low discharges to whole handling ship pipe
Line carries out slow precooling, prevents handling ship pipeline from being destroyed because low temperature stress is excessive.During shipment, due to liquid level
Decline, the increase of gas-phase space, low temperature ethylene sump pressure can decline, be adjusted by V3 gasification systems according to the pressure of basin
Valve carries out supplementing gaseous ethylene to basin, maintains the service pressure of basin.During unloading, due to low temperature ethylene basin
The reasons such as liquid level rising, gas-phase space reduction, and low-temperature liquid ethylene throttling flash distillation, cause in low temperature ethylene sump pressure
Rise.During unloading, start re-liquefied system, gaseous ethylene is liquefied as into liquid ethylene, back low temperature ethylene basin is carried out
Storage, it is ensured that the pressure of low temperature ethylene basin is under regular operating pressures.
Ship-loading system of the present invention：The low temperature ethylene in low temperature ethylene basin is stored in by shipment pump plus force feed
Go out, through shipment pipeline and handling ship pipeline, the transfusion arm of tank field, low temperature ethylene is delivered in low temperature ship and is stored.Shipment system
System is divided into three parts again：
1）Precooling；In the non-handling ship time phase, handling ship pipeline is in normal temperature state.Prevent from loading and unloading ship pipeline by the change of low temperature stress
Shape is destroyed, and arranges precooling handling ship pipeline step.Before shipment starts, valve V1 is opened, valve V2, V4 and V5 are closed, with defeated
Send the cryogenic liquid ethene after pump to pass through valve V6 and adjust a small amount of liquid ethylene Slow cooling handling ship pipeline, return to from V1 valves low
In warm ethene basin so that the temperature of handling ship ship pipeline reaches the temperature of close liquid ethylene.
2) load onto ship；After precooling handling ship pipeline is completed, valve V6 and V1 are closed.Confirm that ship is connected with harbour transfusion arm
After finishing, valve V2 and V5 are opened, start shipment pump, with a small amount of liquid by valve V5 Slow coolings transfusion arm, arm to be infused
After reaching the temperature of close liquid ethylene, valve V4 is opened, adjustment shipment pump discharge reaches shipment design discharge.
3）Tonifying Qi；During shipment, because the liquid level of basin is reduced, tank top gas-phase space increases low temperature ethylene basin
Plus, cause basin operating pressure to decline.In order to maintain the normal operating pressure of basin, a set of air compensating system is set.In basin pressure
Power drops to setting value, and the valve V3 behind gasification system is automatically opened up, and supplements gaseous ethylene and enters low temperature ethylene basin so as to
Reach service pressure.
Ship-unloading system of the present invention：It is stored in the low temperature ethylene of low temperature ethylene ship to send by the pump pressurization on ship,
Through arm of infusing, handling ship pipeline, liquid low temperature ethene is delivered in ethene basin and is stored.Ship-unloading system is divided into three portions again
Point：
1）Precooling；In the non-handling ship time phase, handling ship pipeline is in normal temperature state.Prevent from loading and unloading ship pipeline by the change of low temperature stress
Shape is destroyed, and arranges precooling handling ship pipeline step.Before shipment starts, valve V1 is opened, valve V2, V4 and V5 are closed, with defeated
Send the cryogenic liquid ethene after pump to pass through valve V6 and adjust a small amount of liquid ethylene Slow cooling handling ship pipeline, return to from V1 valves low
In warm ethene basin so that the temperature of handling ship ship pipeline reaches the temperature of close liquid ethylene.
2) unload；After precooling handling ship pipeline is completed, valve V6 is closed.Confirm that ship is connected with harbour transfusion arm to finish
Afterwards, valve V5 is opened, valve V1 continues to remain on.Notify that low temperature ship prepares to start unloading operation, use a small amount of from ship
Liquid after transfusion arm reaches the temperature of close liquid ethylene, opens valve V4, adjustment by valve V5 Slow coolings transfusion arm
Low temperature ship is gone on board pump discharge, reaches shipment design discharge.
3）It is re-liquefied；During unloading, because low temperature ethylene basin liquid level rises, gas-phase space subtracts low temperature ethylene basin
Less, the low-temperature liquid ethylene throttling reason such as flash distillation and the intrusion of external heat, causes low temperature ethylene sump pressure to rise.Arrange
A set of re-liquefied system, selects rational parameter and suitable machine supporting, and BOG gaseous ethylenes are liquefied as into liquid ethylene, drops
The pressure of low ethene basin so as to reach service pressure.
Shipment of the present invention and ship-unloading system is by the design of rational pipeline valve and loads and unloads auxiliary during ship
The design of auxiliary system is supporting, cancels vapor delivery line and gas phase transfusion arm, completely can be with single transfusion arm and single handling ship pipeline
Shipment and unloading operation are realized, the investment expense of an independent upper pipeline and transfusion arm is reduced.
Claims (2)
1. a kind of shipment of low-temperature liquid ethylene basin and ship-unloading system, it mainly includes ship-loading system, ship-unloading system and precooling
System, it is characterised in that described ethene basin is connected with shipment pump and delivery pump, shipment pump is connected with handling ship pipeline, fills
Unloading pipeline is connected with the transfusion arm of harbour, and transfusion arm is connected with the low temperature ship of pier, and delivery pump is connected with precooling pipeline,
The precooling pipeline other end is connected with the handling ship pipeline of harbour, wherein：The low temperature ethylene being stored in low temperature ethylene basin passes through
Shipment pump pressurization is sent, and through loading and unloading ship pipeline, transfusion arm, low temperature ethylene is delivered in the low temperature ship of connection and is stored and is constituted
Described ship-loading system；The low temperature ethylene of storage is sent by the pump pressurization on ship in low temperature ship, through arm of infusing, handling ship pipe
Line, liquid low temperature ethene is delivered to described ship-unloading system is stored and constituted in the ethene basin of connection；In low temperature ethylene basin
A small amount of low temperature ethylene from tank field precooling pipeline through harbour, then through handling ship pipeline, return in low temperature ethylene basin, dress
Before ship is operated with unloading, in advance handling ship pipeline is carried out into low temperature precooling, and constitute described chilldown system.
2. the shipment of low-temperature liquid ethylene basin according to claim 1 and ship-unloading system, it is characterised in that described dress
Unloading pipeline is bi-directional design, while for the shipment pipeline and the unloading pipeline of ship-unloading system of ship-loading system；Described transfusion
Arm also takes bi-directional design, while for the liquid phase transfusion arm of ship-loading system and ship-unloading system；
The cryogenic liquid tank is configured with one for giving basin tonifying Qi, maintains the tank field gasifier of service pressure；Low temperature
Liquid storage tank is also configured with the ethene reliquefaction installation of a guarantee ethene basin service pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611251507.XA CN106641703A (en) | 2016-12-30 | 2016-12-30 | Shipping and unshipping system of low-temperature liquid-state ethylene storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611251507.XA CN106641703A (en) | 2016-12-30 | 2016-12-30 | Shipping and unshipping system of low-temperature liquid-state ethylene storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106641703A true CN106641703A (en) | 2017-05-10 |
Family
ID=58836108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611251507.XA Pending CN106641703A (en) | 2016-12-30 | 2016-12-30 | Shipping and unshipping system of low-temperature liquid-state ethylene storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106641703A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553058A (en) * | 2019-01-08 | 2019-04-02 | 天津辰力工程设计有限公司 | A kind of technique low temperature propane unloading and heated up |
| CN109915682A (en) * | 2019-04-12 | 2019-06-21 | 南京扬子石油化工设计工程有限责任公司 | Pipeline chilldown system |
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| CN206669316U (en) * | 2016-12-30 | 2017-11-24 | 浙江新锐空分设备有限公司 | The shipment of low-temperature liquid ethylene basin and ship-unloading system |
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| JP2008101658A (en) * | 2006-10-17 | 2008-05-01 | Yazaki Corp | Liquefied gas fuel filling device for automobile and its using method |
| CN202082616U (en) * | 2011-05-10 | 2011-12-21 | 中国石油天然气集团公司 | Cold circulating system for ship unloading pipeline of LNG (Liquefied Natural Gas) receiving terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553058A (en) * | 2019-01-08 | 2019-04-02 | 天津辰力工程设计有限公司 | A kind of technique low temperature propane unloading and heated up |
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| CN109915682A (en) * | 2019-04-12 | 2019-06-21 | 南京扬子石油化工设计工程有限责任公司 | Pipeline chilldown system |
| CN109915682B (en) * | 2019-04-12 | 2023-11-24 | 中集安瑞科工程科技有限公司 | Pipeline precooling system |
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Application publication date: 20170510 |