CN109681772A - A kind of LNG liquefaction plant is pressurized liquid device with skid - Google Patents

A kind of LNG liquefaction plant is pressurized liquid device with skid Download PDF

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Publication number
CN109681772A
CN109681772A CN201811398291.9A CN201811398291A CN109681772A CN 109681772 A CN109681772 A CN 109681772A CN 201811398291 A CN201811398291 A CN 201811398291A CN 109681772 A CN109681772 A CN 109681772A
Authority
CN
China
Prior art keywords
tank car
fixed tank
inlet
vaporizer
mouth
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.)
Withdrawn
Application number
CN201811398291.9A
Other languages
Chinese (zh)
Inventor
王立超
王崇
郑芸哲
滕飞
员晓辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Zenith Oil&gas Engineering Co Ltd
Original Assignee
Tianjin Zenith Oil&gas Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tianjin Zenith Oil&gas Engineering Co Ltd filed Critical Tianjin Zenith Oil&gas Engineering Co Ltd
Priority to CN201811398291.9A priority Critical patent/CN109681772A/en
Publication of CN109681772A publication Critical patent/CN109681772A/en
Withdrawn legal-status Critical Current

Links

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
    • F17C7/02—Discharging 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
    • 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
    • F17C13/04—Arrangement or mounting of valves
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • 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
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • 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
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • F17C2225/0146—Two-phase
    • F17C2225/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • F17C2227/0192—Propulsion of the fluid by using a working fluid
    • 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
    • F17C2227/0302—Heat exchange with the fluid by heating
    • 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
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/048—Methods for emptying or filling by maintaining residual pressure

Abstract

The present invention is that liquid device is fallen in a kind of LNG liquefaction plant skid pressurization, including input and output pipeline architecture, boosting vaporizer, bottom sled, the input and output pipeline architecture includes fixed tank car feed pipe, the material inlet and outlet piping of boosting vaporizer, transport tank car input duct, the both ends of the fixed tank car feed pipe are respectively that fixed tank car material inlet and fixed tank car raw material fill mouth, the fixed tank car material inlet is connected with condenser, the fixed tank car raw material fills mouth and is connected with fixed tank car, one end of the material inlet and outlet piping of the boosting vaporizer is connected with boosting vaporizer.The present invention provides prioritization scheme for LNG liquefaction plant storing and transporting system, uses Prying supercharging to fall liquid device and makes the temperature temperature rise of standardized product relatively small, under the temperature rise, no matter liquid unload, entrucking transport, the storage of unloading of arriving at a station it is unaffected.

Description

A kind of LNG liquefaction plant is pressurized liquid device with skid
Technical field
The present invention relates to petrochemical equipment technical fields more particularly to a kind of skid of LNG liquefaction plant to be pressurized liquid Device.
Background technique
With the continuous enhancing of national environmental protection dynamics, the LNG for being considered as green clean energy resource is widely applied to production The various aspects of life.LNG is the clear energy sources that a kind of calorific value is high, pollution is few.LNG derives from liquefaction plant.LNG liquefaction plant Generally being come by unstripped gas, voltage-regulating system, sour gas deviate from system, the de- benzene of dehydration takes off hydrocarbon demercuration system, liquefaction system, storage and transportation System, diffusion system, instrument wind public work composition.
Storing and transporting system is the system that snacks storage, reversing, outward transport are carried out to the LNG of LNG liquefaction plant output.It is small-sized Two fixing groove parking stalls and a loose slot parking stall would generally be arranged in 50000 side's liquefaction plants.Fixing groove parking stall is to park to serve as to face When LNG storage tank tank car, loose slot parking stall be park LNG outward transport tank car.When loose slot parking stall does not have tank car, LNG is produced The finished product LNG come is stored in fixing groove parking stall, after movable tank car is in place, needs the LNG for fixing tank car flowing back to loose slot Che Shang, so that LNG is transported outward.
The conventional liquefaction plant when of falling liquid, generally can take off the high pressure dry gas that hydrocarbon demercuration system comes out using de- benzene is dehydrated, as The power resources of fixed tank car pressurization.But since the temperature and pressure for carrying out gas is relatively high, tank car gas is either fixed after liquid Mutually or the liquid phase temperature rise of movable tank car is all obvious, especially the liquid phase temperature rise quality that will affect finished fluid, the transport to LNG It uses and can have an impact with storage of arriving at a station；Temperature excessively high simultaneously will increase the output of tank car BOG, due to tank car BOG output The econmics comparison of recycling and reusing is small afterwards, and routine operation is all that direct emission is fallen, and directly compromises the economic benefit of operator.
Summary of the invention
Present invention seek to address that the deficiencies in the prior art, and a kind of LNG liquefaction plant skid pressurization is provided and falls liquid device, It can both be able to achieve pressurization in the case where not changing existing technique working condition and complete fixed tank car and transport falling between tank car Stream, at the same avoid finished fluid temperature rise it is excessive caused by product quality problem, for LNG liquefaction plant storing and transporting system provide it is excellent Change scheme.
The present invention to achieve the above object, using following technical scheme:
A kind of LNG liquefaction plant skid pressurization liquid device, including input and output pipeline architecture, boosting vaporizer, bottom Sled, the input and output pipeline architecture include fixed tank car feed pipe, the material inlet and outlet piping of boosting vaporizer, transhipment tank car Input duct, the both ends of the fixed tank car feed pipe are respectively that fixed tank car material inlet and fixed tank car raw material fill Mouthful, the fixed tank car material inlet is connected with condenser, and the fixed tank car raw material fills mouth and is connected with fixed tank car Logical, one end of the material inlet and outlet piping of the boosting vaporizer is connected with boosting vaporizer, the material of boosting vaporizer into The other end of pipeline is connected with liquid-phase reflux mouth, gas phase refluxing opening and boosting vaporizer inlet by pipeline out, and the liquid phase is returned Head piece, gas phase refluxing opening and boosting vaporizer inlet are connected with fixed tank car, and the one of the transhipment tank car input duct End be connected to boosting vaporizer inlet institute's connecting leg road, transport tank car input duct the other end for transport tank car inlet and with Transhipment tank car is connected.
It further include inert gas air inlet, inert gas air inlet institute's connecting leg road is each with input and output pipeline architecture A pipeline and boosting vaporizer are connected.
Material disengaging control valve is equipped on each pipeline of the input and output pipeline architecture.
The boosting vaporizer inlet and fixed tank car raw material fill mouth and are connected with material opening same on fixed tank car It is logical.
The beneficial effects of the present invention are: the present invention provides prioritization scheme for LNG liquefaction plant storing and transporting system, original is used It is dehydrated de- benzene and takes off hydrocarbon demercuration system and fixed tank car pressurization power using the high pressure dry gas (3.5MPa, 35 DEG C) come out, After liquid, activity bit tank car liquidus temperature increases 5-6 DEG C than (0.15MPa, -155 DEG C) of liquefaction system output.Novel The Prying supercharging pressurization of falling liquid device is fallen after liquid, the liquidus temperature of activity bit tank car than liquefaction system output (0.15MPa ,- 155 DEG C) increase 3 DEG C or so, by comparison it is found that the temperature of the Prying supercharging change of falling liquid device liquefaction system output criteria product It is intrinsic half, temperature rise is relatively small.Under the temperature rise, no matter liquid is unloaded, entrucking transport, arriving at a station to unload stores It is unaffected.
Detailed description of the invention
Fig. 1 is overlooking structure diagram of the present invention；
Fig. 2 is schematic view of the front view of the present invention；
In figure: 1- input and output pipeline architecture；2- boosting vaporizer；The bottom 3- sled；4- fixes tank car material inlet；5- is solid Determine tank car raw material and fills mouth；6- liquid-phase reflux mouth；7- gas phase refluxing opening；8- boosting vaporizer inlet；9- transports tank car feed liquor Mouthful；10- inert gas air inlet；
It is described in detail below with reference to the embodiment of the present invention referring to attached drawing.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
As depicted in figs. 1 and 2, a kind of LNG liquefaction plant is pressurized liquid device, including input and output pipeline architecture with skid 1, boosting vaporizer 2, bottom sled 3, the input and output pipeline architecture 1 include the object of fixed tank car feed pipe, boosting vaporizer 2 Expect inlet and outlet piping, transhipment tank car input duct, the both ends of the fixed tank car feed pipe are respectively fixed tank car feedstock Mouth 4 and fixed tank car raw material fill mouth 5, and the fixed tank car material inlet 4 is connected with condenser, and the fixed tank car is former Material fill mouth 5 with fixation tank car be connected, one end of the material inlet and outlet piping of the boosting vaporizer 2 with boosting vaporizer 2 It is connected, the other end of the material inlet and outlet piping of boosting vaporizer 2 is connected with liquid-phase reflux mouth 6,7 and of gas phase refluxing opening by pipeline Boosting vaporizer inlet 8, the liquid-phase reflux mouth 6, gas phase refluxing opening 7 and boosting vaporizer inlet 8 with fixed tank car It is connected, one end of the transhipment tank car input duct is connected to 8 connecting leg roads of boosting vaporizer inlet, transports tank car feed liquor The other end of pipeline is transhipment tank car inlet 9 and is connected with transhipment tank car.
It further include inert gas air inlet 10,10 connecting leg roads of the inert gas air inlet and input and output pipeline architecture 1 each pipeline and boosting vaporizer 2 is connected.
Material disengaging control valve is equipped on each pipeline of the input and output pipeline architecture 1.
The boosting vaporizer inlet 8 and fixed tank car raw material fill mouth 5 and material opening phase same on fixed tank car Connection.
LNG in fixed tank car is imported into boosting vaporizer 2 by the present invention by boosting vaporizer inlet 8, is passed through Boosting vaporizer 2 and environment carry out heat exchange, and LNG liquid is made to be changed into two-phase flow, gentle using liquid-phase reflux mouth 6 Phase refluxing opening 7 is defeated to be returned on fixed tank car, closes pressurization when fixed tank car pressure reaches setting value for fixed tank car pressurization Liquid valve door on pipeline opens the fluid valve that falls on Liquid pouring pipe line, and LNG is poured into transhipment slot by transhipment tank car inlet 9 Interior portion.With the reduction of fixed tank car pressure, movable tank car pressure rise is needed further to be pressurized fixed tank car, be beaten It opens the liquid valve door on pressurization pipeline and continues as fixed tank car pressurization, it is anti-using this step until pressure reaches design operation value Multiple pressurization, the liquid that falls, until the completion of falling liquid.
The present invention provides prioritization scheme for LNG liquefaction plant storing and transporting system, and original takes off hydrocarbon demercuration system using de- benzene is dehydrated System is fixed tank car pressurization power, after liquid, activity bit tank car using the high pressure dry gas (3.5MPa, 35 DEG C) come out Liquidus temperature increases 5-6 DEG C than (0.15MPa, -155 DEG C) of liquefaction system output.The novel Prying supercharging increasing of falling liquid device After overwhelming liquid, the liquidus temperature of activity bit tank car increases 3 DEG C or so than (0.15MPa, -155 DEG C) of liquefaction system output, By comparison it is found that the temperature of the Prying supercharging change of falling liquid device liquefaction system output criteria product is intrinsic half, temperature It rises relatively small.Under the temperature rise, no matter liquid unload, entrucking transport, arrive at a station unload storage it is unaffected.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way Limitation, as long as using the various improvement that the inventive concept and technical scheme of the present invention carry out, or not improved direct application It is within the scope of the present invention in other occasions.

Claims (4)

1. a kind of LNG liquefaction plant is pressurized liquid device with skid, which is characterized in that including input and output pipeline architecture (1), increase Vaporizer (2), bottom sled (3) are pressed, the input and output pipeline architecture (1) includes fixed tank car feed pipe, boosting vaporizer (2) Material inlet and outlet piping, transhipment tank car input duct, the both ends of the fixed tank car feed pipe are respectively fixed tank car raw material Feed inlet (4) and fixed tank car raw material fill mouth (5), and the fixed tank car material inlet (4) is connected with condenser, described Fixed tank car raw material fills mouth (5) and is connected with fixed tank car, and one end of the material inlet and outlet piping of the boosting vaporizer (2) is equal It is connected with boosting vaporizer (2), the other end of the material inlet and outlet piping of boosting vaporizer (2) is connected with liquid-phase reflux by pipeline Mouth (6), gas phase refluxing opening (7) and boosting vaporizer inlet (8), the liquid-phase reflux mouth (6), gas phase refluxing opening (7) and increasing Pressure vaporizer inlet (8) is connected with fixed tank car, one end of the transhipment tank car input duct and boosting vaporizer into Liquid mouth (8) institute's connecting leg road connection, transhipment tank car input duct the other end be transhipment tank car inlet (9) and with transhipment tank car phase Connection.
2. a kind of LNG liquefaction plant according to claim 1 is pressurized liquid device with skid, which is characterized in that further include Inert gas air inlet (10), inert gas air inlet (10) institute's connecting leg road are each with input and output pipeline architecture (1) Pipeline and boosting vaporizer (2) are connected.
3. a kind of LNG liquefaction plant according to claim 1 is pressurized liquid device with skid, which is characterized in that described defeated Enter to be equipped with material disengaging control valve on each pipeline of export pipeline structure (1).
4. a kind of LNG liquefaction plant according to claim 1 is pressurized liquid device with skid, which is characterized in that the increasing Pressure vaporizer inlet (8) and fixed tank car raw material fill same material opening in communication on mouth (5) and fixed tank car.
CN201811398291.9A 2018-11-22 2018-11-22 A kind of LNG liquefaction plant is pressurized liquid device with skid Withdrawn CN109681772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811398291.9A CN109681772A (en) 2018-11-22 2018-11-22 A kind of LNG liquefaction plant is pressurized liquid device with skid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811398291.9A CN109681772A (en) 2018-11-22 2018-11-22 A kind of LNG liquefaction plant is pressurized liquid device with skid

Publications (1)

Publication Number Publication Date
CN109681772A true CN109681772A (en) 2019-04-26

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008085005A1 (en) * 2007-01-12 2008-07-17 Cryo-Nevico Inc. Tank for holding a cryogenic liquid and a conduit assembly, and a system for effecting flow control and pressure management of a cryogenic liquid held in the tank
CN105546328A (en) * 2016-01-19 2016-05-04 江苏长隆石化装备有限公司 LNG tank car loading and unloading prying tool
CN205640213U (en) * 2016-05-09 2016-10-12 杭州市燃气集团有限公司 Liquefied natural gas tank wagon loading and unloading integration system
CN106047431A (en) * 2016-04-13 2016-10-26 华电郑州机械设计研究院有限公司 Skid-mounted liquefied natural gas device
CN206159819U (en) * 2016-08-31 2017-05-10 河南开元气体装备有限公司 Novel unload pump sled of LNG tank wagon device
CN207298367U (en) * 2017-09-04 2018-05-01 连云港杰瑞自动化有限公司 A kind of skid of unloading with low-temperature centrifugal pump with the LNG for being pressurized gasifier is put
CN208058410U (en) * 2017-12-15 2018-11-06 天津市益斯达燃气设备有限公司 A kind of movable type is unloaded supercharging sled

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008085005A1 (en) * 2007-01-12 2008-07-17 Cryo-Nevico Inc. Tank for holding a cryogenic liquid and a conduit assembly, and a system for effecting flow control and pressure management of a cryogenic liquid held in the tank
CN105546328A (en) * 2016-01-19 2016-05-04 江苏长隆石化装备有限公司 LNG tank car loading and unloading prying tool
CN106047431A (en) * 2016-04-13 2016-10-26 华电郑州机械设计研究院有限公司 Skid-mounted liquefied natural gas device
CN205640213U (en) * 2016-05-09 2016-10-12 杭州市燃气集团有限公司 Liquefied natural gas tank wagon loading and unloading integration system
CN206159819U (en) * 2016-08-31 2017-05-10 河南开元气体装备有限公司 Novel unload pump sled of LNG tank wagon device
CN207298367U (en) * 2017-09-04 2018-05-01 连云港杰瑞自动化有限公司 A kind of skid of unloading with low-temperature centrifugal pump with the LNG for being pressurized gasifier is put
CN208058410U (en) * 2017-12-15 2018-11-06 天津市益斯达燃气设备有限公司 A kind of movable type is unloaded supercharging sled

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Application publication date: 20190426

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