CN112325155A - Foundation pit type seawater gravity flow type ORV gasification system and method - Google Patents
Foundation pit type seawater gravity flow type ORV gasification system and method Download PDFInfo
- Publication number
- CN112325155A CN112325155A CN202011165295.XA CN202011165295A CN112325155A CN 112325155 A CN112325155 A CN 112325155A CN 202011165295 A CN202011165295 A CN 202011165295A CN 112325155 A CN112325155 A CN 112325155A
- Authority
- CN
- China
- Prior art keywords
- seawater
- foundation pit
- orv
- natural gas
- heat exchange
- Prior art date
- 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.)
- Pending
Links
Images
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
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
- F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/14—Conveying liquids or viscous products by pumping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
-
- 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
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
-
- 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
- F17C2227/03—Heat exchange with the fluid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a foundation pit type seawater gravity flow type ORV gasification system and a method, comprising the following steps: the foundation pit is arranged at the seaside, the upper part of one side of the foundation pit is provided with a water inlet, the water inlet is lower than the sea level and is communicated with a seawater inlet pipeline, and a seawater regulating valve is arranged on the seawater inlet pipeline; the ORV heat exchange plate is located below the liquid level in the foundation pit and can exchange heat with seawater in the foundation pit; an LNG line in communication with a bottom of the ORV heat exchange plate to provide LNG to the ORV heat exchange plate; the natural gas outlet pipe is communicated with the top of the ORV heat exchange plate and is used for conveying the natural gas formed by gasification to the downstream; and the seawater discharge pump is arranged in the foundation pit and used for discharging the seawater in the foundation pit. The invention cancels the seawater pump system, directly leads the seawater to enter the foundation pit through gravity flow to exchange heat with the ORV by arranging the foundation pit, greatly simplifies the process flow and reduces the engineering investment.
Description
Technical Field
The invention relates to an ORV gasification system and method in an LNG receiving station.
Background
In LNG receiving stations, an Open Rack Vaporizer (ORV) system is typically deployed in the vaporizer unit. The open rack vaporizer utilizes a seawater pump and a seawater pipeline to convey seawater to a double-side or single-side water tank at the upper part of the vaporizer, the seawater overflows to the surface of the heat exchange tube from two sides of the water tank and exchanges heat with liquid LNG in the heat exchange tube, and accordingly LNG is vaporized.
In the prior art, a seawater pump, a water intake, a drainage ditch, a seawater pipeline and the like need to be configured, wherein the power of the seawater pump needs to be large enough, and the seawater pipeline needs to be long enough, so that the cost cannot be reduced, and the technical problems of very complex process flow, huge engineering investment, serious energy waste and the like exist.
In general, the disadvantages of the prior systems include:
1. the engineering quantity is huge, and the investment is high;
2. the process flow is complex and the energy consumption is large;
3. the control scheme is more complex;
4. a seawater pump needs to be arranged, so that energy consumption is caused;
5. underground constructions such as a water intake, a seawater ditch and the like need to be configured;
6. facilities such as seawater pipelines and underground pipe ditches need to be configured;
7. the underground seawater pipeline is inconvenient to maintain.
Disclosure of Invention
The invention aims to: provides a foundation pit type seawater gravity flow type ORV gasification system and a method, which solve the technical problems in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
a foundation ditch formula sea water gravity flow pattern ORV gasification system which characterized in that includes:
the upper part of one side of the foundation pit is provided with a water inlet, the water inlet is lower than the sea level and is communicated with a seawater inlet pipeline, and a seawater regulating valve is arranged on the seawater inlet pipeline;
the ORV heat exchange plate is located below the liquid level in the foundation pit and can exchange heat with seawater in the foundation pit;
an LNG line in communication with a bottom of the ORV heat exchange plate to provide LNG to the ORV heat exchange plate;
the natural gas outlet pipe is communicated with the top of the ORV heat exchange plate and is used for conveying the natural gas formed by gasification to the downstream;
and the seawater discharge pump is arranged in the foundation pit and used for discharging the seawater in the foundation pit.
Foundation ditch formula sea water gravity flow pattern ORV gasification system, wherein: the seawater discharge pump is a seawater immersed pump or a vertical long-shaft pump.
Foundation ditch formula sea water gravity flow pattern ORV gasification system, wherein: and a liquid level meter is further arranged in the foundation pit and is in signal connection with the seawater discharge pump.
Foundation ditch formula sea water gravity flow pattern ORV gasification system, wherein: and a flow meter and a thermometer are arranged on the natural gas outlet pipe, and the flow meter and the thermometer are in signal connection with a flow regulating valve on the liquefied natural gas pipeline.
Foundation ditch formula sea water gravity flow pattern ORV gasification system, wherein: still including fan, air regulation valve, air pipeline and the air distribution pipe that connects gradually, the air distribution pipe is arranged and is located in the foundation ditch the position of ORV heat transfer board below.
A foundation pit type seawater gravity flow type ORV gasification method is used, and the foundation pit type seawater gravity flow type ORV gasification system is characterized in that:
the seawater enters the foundation pit through a seawater inlet pipeline by gravity, and the ORV heat exchange plate is immersed;
liquefied natural gas enters the ORV heat exchange plate through the liquefied natural gas pipeline, exchanges heat with seawater in the foundation pit through the ORV heat exchange plate, and is converted into natural gas, and then the natural gas is sent to downstream through the natural gas outlet pipe.
Compared with the prior art, the invention has the beneficial effects that: the invention cancels the seawater pump system, directly leads the seawater to enter the foundation pit through gravity flow to exchange heat with the ORV by arranging the foundation pit, greatly simplifies the process flow and reduces the engineering investment.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Description of reference numerals: a foundation pit 1; a seawater inlet line 2; a seawater regulating valve 3; an ORV heat exchange plate 4; a liquefied natural gas line 5; a flow rate regulating valve 51; a natural gas outlet pipe 6; a seawater discharge pump 7; a liquid level meter 8; a thermometer 9; a flow meter 10; an air inlet 11; a filter 12; a fan 13; an air volume adjusting valve 14; an air line 15; an air distribution pipe 16.
Detailed Description
As shown in fig. 1, the present invention provides a foundation pit type seawater gravity flow type ORV gasification system, comprising:
the foundation pit 1 is arranged at the seaside (the closer the foundation pit is, the better the foundation pit is, so as to save energy consumption), the upper part of one side of the foundation pit 1 is provided with a water inlet, the water inlet is lower than the sea level and is communicated with a seawater inlet pipeline 2, and the seawater inlet pipeline 2 is provided with a seawater regulating valve 3 so as to control the speed of seawater flowing into the foundation pit 1;
the ORV heat exchange plate 4 is located below the liquid level in the foundation pit 1 and can fully exchange heat with the seawater in the foundation pit 1;
the liquefied natural gas pipeline 5 is communicated with the bottom of the ORV heat exchange plate 4 to provide liquefied natural gas for the ORV heat exchange plate 4, and the liquefied natural gas exchanges heat with seawater in the foundation pit 1 through the ORV heat exchange plate 4 and is converted into natural gas;
a natural gas outlet pipe 6 which is communicated with the top of the ORV heat exchange plate 4 and sends natural gas to the downstream for storage and transportation;
the seawater discharge pump 7 is preferably a seawater immersed pump or a vertical long-shaft pump, is arranged in the foundation pit 1, and is used for discharging seawater in the foundation pit 1 to the sea so as to reasonably adjust the water level in the foundation pit 1.
When the device is used, seawater with a sodium hypochlorite solution is added (the sodium hypochlorite solution is prepared by electrolyzing seawater and is added into the seawater to prevent marine organisms from growing to block pipelines and equipment to influence the normal operation of a seawater system) and enters the foundation pit 1 through the seawater inlet pipeline 2 by gravity, the ORV heat exchange plate 4 is immersed, liquefied natural gas enters the ORV heat exchange plate 4 through the liquefied natural gas pipeline 5 and exchanges heat with the seawater in the foundation pit 1 through the ORV heat exchange plate 4, and after the liquefied natural gas is converted into natural gas, the natural gas is sent to the downstream for storage and transportation through the natural gas outlet pipe 6.
The speed of seawater entering the foundation pit 1 can be controlled through the seawater regulating valve 3, and the water level is prevented from being too low; the water level in the foundation pit 1 can be controlled by the seawater discharge pump 7 so as not to be too high.
And, still be equipped with level gauge 8 in the foundation ditch 1, level gauge 8 and sea water discharge pump 7 signal connection, when the liquid level was too high in foundation ditch 1, can start sea water discharge pump 7 and start by oneself.
In addition, a thermometer 9 and a flowmeter 10 are provided on the natural gas outlet pipe 6, and the thermometer 9 and the flowmeter 10 are both in signal connection with a flow rate adjustment valve 51 on the liquefied natural gas pipeline 5, and the flow rate of the liquefied natural gas is adjusted by the flow rate and the temperature value of the natural gas outlet pipe 6, so that the gasification rate can be maintained in a high-efficiency section.
Moreover, as shown in fig. 1, an air distribution system may be further added in the present invention, and the air distribution system includes an air inlet 11, a filter 12, a fan 13, an air volume adjusting valve 14, an air pipeline 15, and an air distribution pipe 16, which are connected in sequence, where the air distribution pipe 16 is disposed in the foundation pit 1 at a position below the ORV heat exchange plate 4, and compressed air enters the air distribution pipe 16 by driving of the fan 13, and bubbles are formed and discharged from the air distribution pipe 16, and a large number of bubbles can greatly disturb seawater in the foundation pit 1, thereby further improving heat exchange efficiency between the seawater and the ORV heat exchange plate 4.
As described above, the present invention can achieve the following technical effects:
1. the process is simple, and the control is simple;
2. the engineering quantity is small, and the investment is saved;
3. the environment is protected, the energy is saved and the consumption is reduced;
4. the heat exchange efficiency is high.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. A foundation ditch formula sea water gravity flow pattern ORV gasification system which characterized in that includes:
the upper part of one side of the foundation pit is provided with a water inlet, the water inlet is lower than the sea level and is communicated with a seawater inlet pipeline, and a seawater regulating valve is arranged on the seawater inlet pipeline;
the ORV heat exchange plate is located below the liquid level in the foundation pit and can exchange heat with seawater in the foundation pit;
an LNG line in communication with a bottom of the ORV heat exchange plate to provide LNG to the ORV heat exchange plate;
the natural gas outlet pipe is communicated with the top of the ORV heat exchange plate and is used for conveying the natural gas formed by gasification to the downstream;
and the seawater discharge pump is arranged in the foundation pit and used for discharging the seawater in the foundation pit.
2. The foundation pit type seawater gravity flow type ORV gasification system according to claim 1, wherein: the seawater discharge pump is a seawater immersed pump or a vertical long-shaft pump.
3. The foundation pit type seawater gravity flow type ORV gasification system according to claim 1, wherein: and a liquid level meter is further arranged in the foundation pit and is in signal connection with the seawater discharge pump.
4. The foundation pit type seawater gravity flow type ORV gasification system according to claim 1, wherein: and a flow meter and a thermometer are arranged on the natural gas outlet pipe, and the flow meter and the thermometer are in signal connection with a flow regulating valve on the liquefied natural gas pipeline.
5. The foundation pit type seawater gravity flow type ORV gasification system according to claim 1, wherein: still including fan, air regulation valve, air pipeline and the air distribution pipe that connects gradually, the air distribution pipe is arranged and is located in the foundation ditch the position of ORV heat transfer board below.
6. A foundation pit type seawater gravity flow type ORV gasification method using the foundation pit type seawater gravity flow type ORV gasification system according to any one of claims 1 to 5, characterized in that:
the seawater enters the foundation pit through a seawater inlet pipeline by gravity, and the ORV heat exchange plate is immersed;
liquefied natural gas enters the ORV heat exchange plate through the liquefied natural gas pipeline, exchanges heat with seawater in the foundation pit through the ORV heat exchange plate, and is converted into natural gas, and then the natural gas is sent to downstream through the natural gas outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011165295.XA CN112325155A (en) | 2020-10-27 | 2020-10-27 | Foundation pit type seawater gravity flow type ORV gasification system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011165295.XA CN112325155A (en) | 2020-10-27 | 2020-10-27 | Foundation pit type seawater gravity flow type ORV gasification system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112325155A true CN112325155A (en) | 2021-02-05 |
Family
ID=74296952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011165295.XA Pending CN112325155A (en) | 2020-10-27 | 2020-10-27 | Foundation pit type seawater gravity flow type ORV gasification system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112325155A (en) |
-
2020
- 2020-10-27 CN CN202011165295.XA patent/CN112325155A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109647206A (en) | Deep-sea reverse osmosis desalination device and its method | |
| CN110398116A (en) | A kind of equipment cooling water circulation system | |
| CN101701466B (en) | Pressure-superposed water supplying facility of hydraulic power automatic control pipe network | |
| CN213712645U (en) | Foundation pit type seawater gravity flow type ORV gasification system | |
| CN112325155A (en) | Foundation pit type seawater gravity flow type ORV gasification system and method | |
| CN201546685U (en) | Production device of standardized gas well | |
| CN211669988U (en) | Important service water system of offshore floating nuclear power station | |
| CN209507650U (en) | A kind of ionic membrane method alkaline electrolysis light salt brine dechlorination system | |
| CN204611732U (en) | A kind of blowdown system | |
| CN205367782U (en) | Imitate intelligent level pressure moisturizing degasification unit by force | |
| CN212299548U (en) | Bathing wastewater waste heat recovery system | |
| CN211575937U (en) | High-efficient scale control heat exchanger and industry waste heat recovery system | |
| CN204080939U (en) | A kind of siphonic water-collecting well | |
| CN112211101A (en) | Water supply joint adjusting system for bridge abutment of bridge pier | |
| CN111156838A (en) | High-efficient scale control heat exchanger and industry waste heat recovery system | |
| CN106969929B (en) | The experimental system and method for heat generating components are flooded in the simulation of pressure environment maintenance condition | |
| CN105240970A (en) | Sea-chilled-water concentrated cold supplying system with auxiliary cold source and concentrated cold supplying method | |
| CN2797877Y (en) | Oxygen removing device using low level heat | |
| CN221001226U (en) | Constant-pressure water supplementing system for desalted water supply device | |
| CN219174237U (en) | Sewage treatment structure and treatment system thereof | |
| CN216976502U (en) | Gasifier heating device | |
| CN210411797U (en) | Gas-water pulse flushing equipment for vertical pipe of residential district | |
| CN220135556U (en) | Heating water replenishing system of power plant | |
| CN212078104U (en) | Weighing type non-negative pressure water supply equipment | |
| CN220229639U (en) | Stable pressure moisturizing device and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |