CN106090603B - Liquefied petroleum gas residual liquid recovery system and method - Google Patents

Liquefied petroleum gas residual liquid recovery system and method Download PDF

Info

Publication number
CN106090603B
CN106090603B CN201610607397.XA CN201610607397A CN106090603B CN 106090603 B CN106090603 B CN 106090603B CN 201610607397 A CN201610607397 A CN 201610607397A CN 106090603 B CN106090603 B CN 106090603B
Authority
CN
China
Prior art keywords
liquefied gas
liquefied
tank
gas storage
residual liquid
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.)
Active
Application number
CN201610607397.XA
Other languages
Chinese (zh)
Other versions
CN106090603A (en
Inventor
李十
孙加亮
韩国祯
张金辉
杨伟明
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.)
Capital Engineering & Research Inc Ltd
Beijing Jingcheng Zeyu Energy Environmental Protection Engineering Technology Co ltd
Original Assignee
Capital Engineering & Research Inc Ltd
Beijing Jingcheng Zeyu Energy Environmental Protection Engineering Technology 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 Capital Engineering & Research Inc Ltd, Beijing Jingcheng Zeyu Energy Environmental Protection Engineering Technology Co ltd filed Critical Capital Engineering & Research Inc Ltd
Priority to CN201610607397.XA priority Critical patent/CN106090603B/en
Publication of CN106090603A publication Critical patent/CN106090603A/en
Application granted granted Critical
Publication of CN106090603B publication Critical patent/CN106090603B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C7/00Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02Discharging liquefied gases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C13/00Details of vessels or of the filling or discharging of vessels
    • F17C13/02Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01Shape
    • F17C2201/0104Shape cylindrical
    • F17C2201/0109Shape cylindrical with exteriorly curved end-piece
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03Orientation
    • F17C2201/032Orientation with substantially vertical main axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05Size
    • F17C2201/056Small (<1 m3)
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2221/00Handled fluid, in particular type of fluid
    • F17C2221/03Mixtures
    • F17C2221/032Hydrocarbons
    • F17C2221/033Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146Two-phase
    • F17C2223/0153Liquefied gas, e.g. LPG, GPL
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2225/00Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146Two-phase
    • F17C2225/0153Liquefied gas, e.g. LPG, GPL
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2227/00Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01Propulsion of the fluid
    • F17C2227/0128Propulsion of the fluid with pumps or compressors
    • F17C2227/0157Compressors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2250/00Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06Controlling or regulating of parameters as output values
    • F17C2250/0605Parameters
    • F17C2250/0626Pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2270/00Applications
    • F17C2270/05Applications for industrial use

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention provides a liquefied petroleum gas raffinate recovery system and a method. The liquefied petroleum gas raffinate recovery system includes: the device comprises a liquefied gas compressor, a liquefied gas storage tank, a liquefied gas residual tank and a tank car; the liquefied gas compressor is respectively connected with the liquefied gas storage tank, the liquefied gas residual tank and the tank wagon; the liquefied gas residual liquid tank is respectively connected with the liquefied gas storage tank and the tank wagon; the tank wagon is connected with the liquefied gas storage tank; the liquefied gas compressor extracts the liquefied gas in the liquefied gas residue tank, the liquefied gas compressor pressurizes the liquefied gas in the liquefied gas residue tank and then injects the pressurized liquefied gas into the liquefied gas storage tank, and residual liquid in the liquefied gas storage tank is discharged into the liquefied gas residue tank. The method for recovering the residual liquid of the liquefied petroleum gas adopts the residual liquid recovery system of the liquefied petroleum gas. The invention can use the inherent compressor of the storage and distribution station, and has low investment, simplicity and convenience.

Description

LPG residual liquid recovery system and method
Technical field
The present invention relates to fields, and in particular to the remaining air-liquid recycling in liquefied petroleum gas storage tank, especially a kind of liquefaction stone Oil gas raffinate recovery system and method.
Background technique
Liquefied petroleum gas main component is C3、C4Alkane and alkene, also containing a small amount of ethylene, second hydrocarbon, pentane etc..Normal Temperature is lower can be allowed to liquefy using lower pressure, be stored in storage tank in liquid form.It is a kind of cleaning, easily green energy Source is increasingly subject to the attention and concern of people.In liquefied petroleum gas using stage, tank bottom can have small part liquid not to the end It can vaporize, this partially liq is known as raffinate, generally 5~20%.The main component of raffinate is C5And it a small amount of is not gasified totally C4Component, there are also hydrogen sulfide, water, impurity etc..In air after release, raffinate is easier to volatilize, spread and burn than gasoline, Certain economic loss is not only caused to user, but also can cause raffinate kindling, explosion and casualty accident, causes environmental pollution. But the fuel value of raffinate is higher, is a kind of good raw material of industry, will be energy-saving if extraction utilization can be carried out raffinate, Generate good economic benefit.
Currently, the raffinate draw-out device that large-scale liquefied gas station is equipped with, mainly utilizes nitrogen charging device, nitrogen is conveyed to pressure Raffinate after compressor boost in reinfusate gas cylinder, is extruded by means of nitrogen pressure and is transported to raffinate storage by contracting machine In storage, then the nitrogen in steel cylinder is evacuated with vacuum pump and reaches certain vacuum degree.This device extracts complex process, at This height, it is difficult to be received by more liquefied gas stations.
In conclusion in the prior art the prior art has at least the following problems: existing liquefied petroleum gas recovery process is complicated, cost It is high.
Summary of the invention
The present invention provides a kind of LPG residual liquid recovery system and method, to solve existing liquefied petroleum gas recycling Complex process, problem at high cost.
For this purpose, the present invention proposes a kind of LPG residual liquid recovery system, the LPG residual liquid recovery system Include:
Liquefied gases compressor, liquefied gas storage, liquefied gas residue tank and tank car;
Wherein;
Liquefied gases compressor is connect with liquefied gas storage, liquefied gas residue tank and tank car respectively;
The liquefied gas residue tank is connect with the liquefied gas storage and tank car respectively;
The tank car is connect with the liquefied gas storage;
The liquefied gases compressor extracts the liquefied gas of the liquefied gas residue tank, and the liquefied gases compressor is by the liquid The liquefied gas storage is injected after changing the liquefied gas pressurization of gas residual liquid tank, the raffinate in the liquefied gas storage is drained into described In liquefied gas residue tank.
Further, the liquefied gas storage includes: the first liquefied gas storage and the second liquefied gas storage in parallel.
Further, the liquefied gas storage is equipped with sewerage pipeline, and the sewerage pipeline is compressed with liquefied gas respectively Machine, liquefied gas residue tank, liquefied gas storage gasification installation be connected.
Further, the liquefied gas storage includes: 1~8 tank body in parallel.
Further, the volume of the liquefied gas residue tank is 2~20m3
Further, 2~8 row's valve groups are respectively set in the inlet and outlet of the liquefied gases compressor, to control liquefaction The disengaging of gas flows to.
Further, liquid level emasuring device is equipped in the liquefied gas storage;The liquid level emasuring device by respectively with Liquefied gases compressor and tank car are connected.
Further, the liquefied gases compressor is connected with the first liquefied gas storage, the second liquefied gas storage respectively, and And described it is connected respectively with liquefied gas residue tank, tank car;First liquefied gas storage is connected with the second liquefied gas storage; The liquefied gas residue tank is connected with the first liquefied gas storage, the second liquefied gas storage and tank car respectively, from tank car or The finished product liquefied petroleum gas of pipe network is supplied respectively to the first liquefied gas storage or the second liquefied gas storage.
The present invention also proposes a kind of LPG residual liquid recovery method, is returned using mentioned-above LPG residual liquid Receipts system, the LPG residual liquid recovery method include:
Step A: the liquefied gas of liquefied gas residual liquid tank is extracted with liquefied gases compressor;
Step B: it is pressurizeed with liquefied gas of the liquefied gases compressor to the liquefied gas residue tank;
Step C: the liquefied gas after pressurization is injected into the liquefied gas storage, the raffinate in liquefied gas storage is drained into institute It states in liquefied gas residue tank.
Further, the LPG residual liquid recovery method further include: step D: after step c, by residual liquid tank In raffinate be transported in tank car.
The present invention extracts the liquefied gas of liquefied gas residual liquid tank, the liquefaction to the liquefied gas residue tank with liquefied gases compressor Gas pressurization, then injects the liquefied gas storage for the liquefied gas after pressurization, the raffinate in liquefied gas storage is drained into described In liquefied gas residue tank, this process does not need the participation of the third gas (such as nitrogen), and the raffinate in liquefied gas storage is added It presses the power recycled as raffinate to also eliminate the process vacuumized without additionally increasing inert gas, therefore, reduces Cost, recovery efficiency are high.
The present invention make use of liquefied petroleum gas itself steam, and the system of pressurized recycling raffinate can reduce cost recovery, letter It is single practical, the use of other equipment is not influenced, and recovering effect is good.
The present invention recycles raffinate, energy saving, realizes waste utilization, turns waste into wealth;With easy to operate, highly-safe The features such as.
Detailed description of the invention
Fig. 1 is the LPG residual liquid recovery system of the embodiment of the present invention or the process flow chart of method;
Fig. 2 is the pipeline jointing construction schematic diagram of liquefied gases compressor;
Fig. 3 is the pipeline jointing construction schematic diagram of the first liquefied gas storage;
Fig. 4 is the pipeline jointing construction schematic diagram of the second liquefied gas storage;
Fig. 5 is the pipeline jointing construction schematic diagram of liquefied gas residue tank.
Drawing reference numeral explanation:
1- liquefied gases compressor;
The first liquefied gas storage of 2-;
The second liquefied gas storage of 3-;
4- liquefied gas residue tank;
5- tank car;
6- pipeline;
7- pipeline;
8- pipeline;
9- pipeline;
10- pipeline;
11- pipeline;
12- pipeline;
13- pipeline;
14- pipeline;
15- pipeline;
16- pipeline;
17- pipeline;
V1-V26- valve.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, this hair of Detailed description of the invention is now compareed It is bright.
As shown in Figure 1, the present invention provides a kind of LPG residual liquid recovery system, the LPG residual liquid recycling System includes:
Liquefied gases compressor 1, liquefied gas storage, liquefied gas residue tank 4 and tank car 5;
Wherein;
Liquefied gases compressor 1 is connect with liquefied gas storage, liquefied gas residue tank 4 and tank car 5 respectively;
The liquefied gas residue tank 4 is connect with the liquefied gas storage and tank car 5 respectively;
The tank car 5 is connect with the liquefied gas storage;
Liquefied gases compressor pressurizes for compressed liquefied gas or to liquefied gas, using the original compressor of gas holder station, that is, adopts With existing air compressor, reduce investment outlay.
Liquefied gas residue tank, top is gas phase zone, lower part is liquid phase region.Compressor extracts organic gas such as the propane in gas phase On the one hand body reduces the pressure in residual liquid tank, flows into after in addition compressing as the raffinate in powered liquefied gas horizontal tank Residual liquid tank.
Liquefied gases compressor 1 pushes as shown in Fig. 2, being connected respectively with liquefied gas residue tank 4 and tank car 5 by pipeline Raffinate enters tank car.
Liquefied gases compressor is opened, the liquefied gas evaporation in liquefied gas residue tank, (liquefied gas residue tank middle and upper part is gas State, lower part are liquid) liquefied gases compressor 1 extracts the liquefied gas of the liquefied gas residue tank 4, the then liquefied gas Compressor 1 injects the liquefied gas storage after the liquefied gas of the liquefied gas residue tank 4 pressurizes, will be in the liquefied gas storage Raffinate be drained into the liquefied gas residue tank 4.
Liquefied gas storage can be liquefied gas horizontal tank.Further, as shown in Figure 1, the liquefied gas storage includes: First liquefied gas storage 2 and the second liquefied gas storage 3 in parallel.Liquefied gases compressor, by pipeline and the first liquefied gas storage, Second liquefied gas storage is connected, and supplies organic gas for it, provides power for drain.In this way, two storages can be separately recovered Tank does not influence between each other.
Further, the liquefied gas storage is equipped with sewerage pipeline, and the sewerage pipeline is compressed with liquefied gas respectively Machine, liquefied gas residue tank, liquefied gas storage gasification installation be connected, being capable of timely blowdown.For example, as shown in figure 3, the first liquid Change gas storage tank 2 and be equipped with valve V13, as shown in figure 4, the second liquefied gas storage 3 is equipped with valve V18, is used for blowdown.
Further, the liquefied gas storage includes: eight tank bodies in parallel.1~8 liquefied gas can be stored up respectively in this way Tank carries out normal work of the drain without influencing other storage tanks.
Further, the volume of the liquefied gas residue tank is 2~20m3.In such manner, it is possible to which it is residual to accommodate suitable liquefied gas Liquid can guarantee that top is gas phase zone, lower part is liquid phase region, guarantee to provide enough power.
Further, 2~8 row's valve groups are respectively set in the inlet and outlet of the liquefied gases compressor, to control liquefaction The disengaging of gas flows to.
Further, liquid level emasuring device is equipped in the liquefied gas storage;The liquid level emasuring device by respectively with Liquefied gases compressor and tank car are connected.
Further, liquefied gases compressor 1 is connected by pipeline 6 with the first liquefied gas storage 2, passes through pipeline 7 and the Two liquefied gas storages 3 are connected, and are connected by pipeline 15 with liquefied gas residue tank 4, are connected by pipeline 17 with tank car 5; First liquefied gas storage 1 passes through pipeline 8, pipeline 11, pipeline 9, pipeline 12, pipeline 10,13 phase of pipeline with the second liquefied gas storage 2 Connection;
As shown in figure 5, liquefied gas residue tank 4 by pipeline 14, pipeline 9, pipeline 12 respectively with the first liquefied gas storage 2, Second liquefied gas storage 3 is connected, and is connected by pipeline 16 with tank car.
Finished product liquefied petroleum gas from tank car or pipe network enters the first liquefied gas storage by pipeline 10 and valve V12, The second liquefied gas storage 3 is injected by pipeline 13, valve V17.In use, valve V10, V15 transportation of liquefied gas can be opened individually For users to use to gasification installation.
When discharging raffinate in the first liquefied gas storage, valve V12, valve V10 are closed, valve V25, valve V21, valve V11 is opened, and valve V20, valve V3 are opened, and valve V8, valve V9 are opened.Liquefied gases compressor is opened, in liquefied gas residue tank Liquefied gas evaporation, by pipeline 15, into liquefied gases compressor 1, after pressurization through valve V8 by pipeline 6 injection first liquefaction Gas storage tank 2, with the increase of pressure in tank, the raffinate of tank bottom enters liquefied gas residue tank 4 along pipeline 9, pipeline 14, completes to 1 The drain operation of number storage tank (the first liquefied gas storage 2).No. 2 storage tanks (the second liquefied gas storage 3) can normal work in the process Make.By similar operation, the raffinate in No. 2 storage tanks (the second liquefied gas storage 3) can be discharged, without influencing No. 1 storage tank It operates normally.
When the liquid level in liquefied gas residue tank 4 reaches high liquid level, raffinate can be transported in tank car 5.Close drain pipe The related valve on related valve, pipeline 6 (be used for air inlet), pipeline 7 (being used for air inlet) on road 14, the valve in opening conduits 15 Door V20, valve V4, open valve V22, valve V1.Liquefied gases compressor is opened, the liquefied gas pressurization of gas-phase space in tank car 5 It is inputted in liquefied gas residue tank by valve V4, pipeline 15, with pressure rise, raffinate is pushed to flow to tank car liquid phase interface.This Outside, liquefied gases compressor 1 is equipped with valve V2, valve V5 and V7, and the first liquefied gas storage 2 is equipped with valve V13, the second liquefaction Gas storage tank 3 is equipped with valve V18, and liquefied gas residue tank 4 is equipped with valve V24.After raffinate recycles, residual liquid tank disengaging is closed All valves of mouth.
The present invention also proposes a kind of LPG residual liquid recovery method, is returned using mentioned-above LPG residual liquid Receipts system, the LPG residual liquid recovery method include:
Step A: the liquefied gas of liquefied gas residual liquid tank is extracted with liquefied gases compressor;
Step B: it is pressurizeed with liquefied gas of the liquefied gases compressor to the liquefied gas residue tank;
Step C: the liquefied gas after pressurization is injected into the liquefied gas storage, the raffinate in liquefied gas storage is drained into institute It states in liquefied gas residue tank.
Further, the LPG residual liquid recovery method further include: step D: after step c, by residual liquid tank In raffinate be transported in tank car.In such manner, it is possible to which efficiently the raffinate in residual liquid tank is transported in tank car, recycling is thorough, grasps Make easy, safety.
LPG residual liquid recovery method embodiment 1 of the invention:
According to shown in Fig. 1, the raffinate in the first liquefied gas storage is discharged, and No. 2 storage tanks (the second liquefied gas storage 3) are normal When work, it can perform the following operation.Close valve V16, valve V14, valve V10, valve V12;Open valve V11, valve V25, valve V21;Open valve V20, valve V3, valve V8, valve V9;Liquefied gases compressor 1 is opened, compressor is from liquefied gas The organic gas such as propane are extracted in residual liquid tank 4, and through valve V8 after pressurization, the first liquefied gas storage 2 is entered by pipeline 6, with Pressure inside the tank constantly increases, and raffinate is pushed to enter in liquefied gas residue tank 4 from pipeline 9 (being used for drain), pipeline 14.Drain finishes Afterwards, valve V11, pipeline V10, pipeline V9 are closed, liquefied gases compressor is closed.Open valve V12 can be carried out filling liquefaction The work of oil gas.
To No. 2 interior raffinates of liquefied gas storage (the second liquefied gas storage 3), and No. 1 (the first liquid of liquefied gas storage 2 is discharged Change gas storage tank 2) work normally when, can proceed as follows.Close valve V11, valve V17, valve V15;Opening valve V16, Valve V26, valve V25, valve V21, valve V20, valve V3, valve V6, valve V14.Liquefied gases compressor 1 is opened, from liquid Change the organic gas such as extraction propane in gas residual liquid tank 4 and the second liquefied gas storage is transported to by pipeline 7 through valve V6 after pressurization 3.As pressure inside the tank gradually rises, raffinate in tank is pushed to be discharged into liquefied gas residue tank 4 from pipeline 12.Drain finishes, Close compressor, closing valve V14, valve V16, Open valve V17 is that the second liquefied gas storage is filled.
LPG residual liquid recovery method embodiment 2 of the invention:
According to shown in Fig. 1, the liquid tankage vehicle operation in liquefied gas residue tank 4 is as follows.Close valve V21, Open valve V22, valve V1, valve V4, valve V19, valve V20, valve V23.Liquefied gases compressor 1 is opened, gas phase portion in tank car 5 The organic gas such as propane are after compressor pressurizes, and through valve V4, enter liquefied gas residue tank 4 by pipeline 15, with tank internal pressure The raising of power pushes pot liquid to flow into tank car by pipeline 16, and tank car entrucking finishes, close compressor, valve V20, valve V22, valve V19, valve V23, to carry out next operation.
The present invention can carry out pressurization to gas phase condensation gas using the compressor in gas holder station and provide recycling power, have operation The advantages that easy, at low cost, drain is thorough.The intrinsic compressor of gas holder station can be used in the present invention, and investment is low, succinct convenient.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.For this Each component part of invention can be combined with each other under conditions of not conflicting, any those skilled in the art, not depart from this Made equivalent changes and modifications, should belong to the scope of protection of the invention under the premise of the conceptions and principles of invention.

Claims (7)

1. a kind of LPG residual liquid recovery system, which is characterized in that the LPG residual liquid recovery system includes:
Liquefied gases compressor, liquefied gas storage, liquefied gas residue tank and the tank car for recycling raffinate;
Wherein;
Liquefied gases compressor is connect with liquefied gas storage, liquefied gas residue tank and tank car for recycling raffinate respectively;
Tank car of the liquefied gas residue tank respectively with the liquefied gas storage and for recycling raffinate is connect;
The tank car for recycling raffinate is connect with the liquefied gas storage;
The liquefied gases compressor extracts the liquefied gas of the liquefied gas residue tank, and the liquefied gases compressor is by the liquefied gas The liquefied gas storage is injected after the liquefied gas pressurization of residual liquid tank, the raffinate in the liquefied gas storage is drained into the liquefaction In gas residual liquid tank;
The liquefied gas storage includes: the first liquefied gas storage and the second liquefied gas storage in parallel;
The liquefied gases compressor is connected with the first liquefied gas storage, the second liquefied gas storage respectively, and the liquefied gas Compressor is connected with liquefied gas residue tank, for recycling the tank car of raffinate respectively;First liquefied gas storage and the second liquid Change gas storage tank to be connected;The liquefied gas residue tank respectively with the first liquefied gas storage, the second liquefied gas storage and be used for back The tank car for receiving raffinate is connected, and the finished product liquefied petroleum gas from tank car or pipe network is supplied respectively to the first liquefied gas storage or second Liquefied gas storage;
When discharging raffinate in the first liquefied gas storage, the liquefied gases compressor is first made to be connected with first liquefied gas storage Logical, the liquefied gases compressor is connected with the residual liquid tank, and the residual liquid tank is connected with first liquefied gas storage, then Open liquefied gases compressor;The raffinate of first liquefied gas storage is discharged, and the second liquefied gas storage works normally.
2. LPG residual liquid recovery system as described in claim 1, which is characterized in that the liquefied gas storage is equipped with row Sewage pipeline, the sewerage pipeline gasification installation phase with liquefied gases compressor, liquefied gas residue tank, liquefied gas storage respectively Connection.
3. LPG residual liquid recovery system as described in claim 1, which is characterized in that the appearance of the liquefied gas residue tank Product is 2 ~ 20m3
4. LPG residual liquid recovery system as described in claim 1, which is characterized in that the liquefied gases compressor into 2 ~ 8 row's valve groups are respectively set in mouth and outlet, to control the disengaging flow direction of liquefied gas.
5. LPG residual liquid recovery system as described in claim 1, which is characterized in that be equipped in the liquefied gas storage Liquid level emasuring device;The liquid level emasuring device is connected with liquefied gases compressor and tank car respectively.
6. a kind of LPG residual liquid recovery method, which is characterized in that residual using liquefied petroleum gas as described in claim 1 Liquid recovery system, the LPG residual liquid recovery method include:
Step A: the liquefied gas of liquefied gas residual liquid tank is extracted with liquefied gases compressor;
Step B: it is pressurizeed with liquefied gas of the liquefied gases compressor to the liquefied gas residue tank;
Step C: the liquefied gas after pressurization is injected into the liquefied gas storage, the raffinate in liquefied gas storage is drained into the liquid Change in gas residual liquid tank.
7. LPG residual liquid recovery method as claimed in claim 6, which is characterized in that the LPG residual liquid returns Receiving method further include: step D: after step c, the raffinate in residual liquid tank is transported in the tank car for being used to recycle raffinate.
CN201610607397.XA 2016-07-28 2016-07-28 Liquefied petroleum gas residual liquid recovery system and method Active CN106090603B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610607397.XA CN106090603B (en) 2016-07-28 2016-07-28 Liquefied petroleum gas residual liquid recovery system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610607397.XA CN106090603B (en) 2016-07-28 2016-07-28 Liquefied petroleum gas residual liquid recovery system and method

Publications (2)

Publication Number Publication Date
CN106090603A CN106090603A (en) 2016-11-09
CN106090603B true CN106090603B (en) 2019-11-05

Family

ID=57479332

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610607397.XA Active CN106090603B (en) 2016-07-28 2016-07-28 Liquefied petroleum gas residual liquid recovery system and method

Country Status (1)

Country Link
CN (1) CN106090603B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107289322B (en) * 2017-08-17 2020-01-17 四川东晨燃气有限公司 Dimethyl ether storage and filling system for town gas
CN108057256B (en) * 2017-12-25 2020-04-28 广州赛诺石化股份有限公司 Oil gas recovery device
CN109084172A (en) * 2018-08-29 2018-12-25 江苏省特种设备安全监督检验研究院 Liquefied gas tanker residual air remnant liquid recovering device
CN110110986A (en) * 2019-04-29 2019-08-09 东莞市盛源石油化工有限公司 A kind of comprehensive energy supply system and its business model
CN112984373A (en) * 2019-12-17 2021-06-18 大庆金星燃气股份有限公司 Liquefied petroleum gas residual liquid recovery system and method
CN114659024B (en) * 2022-04-25 2024-06-25 湖北浠水蓝天联合气体有限公司 Residual liquid recovery and energy optimization system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2134581Y (en) * 1992-08-10 1993-05-26 盖县锅炉压力容器检验所 Recovery device for residual liquid of liquefied petroleum gas steel bottle
CN2212699Y (en) * 1994-09-22 1995-11-15 叶永红 Suction device for residual liquid of liquefied petroleum gas
KR20150062808A (en) * 2013-11-29 2015-06-08 현대중공업 주식회사 A Treatment System of Liquefied Gas
CN205908997U (en) * 2016-07-28 2017-01-25 北京京诚泽宇能源环保工程技术有限公司 Residual liquid recovery system for liquefied petroleum gas

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203671240U (en) * 2014-01-23 2014-06-25 山东省特种设备检验研究院聊城分院 Liquefied petroleum gas tank emptying device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2134581Y (en) * 1992-08-10 1993-05-26 盖县锅炉压力容器检验所 Recovery device for residual liquid of liquefied petroleum gas steel bottle
CN2212699Y (en) * 1994-09-22 1995-11-15 叶永红 Suction device for residual liquid of liquefied petroleum gas
KR20150062808A (en) * 2013-11-29 2015-06-08 현대중공업 주식회사 A Treatment System of Liquefied Gas
CN205908997U (en) * 2016-07-28 2017-01-25 北京京诚泽宇能源环保工程技术有限公司 Residual liquid recovery system for liquefied petroleum gas

Also Published As

Publication number Publication date
CN106090603A (en) 2016-11-09

Similar Documents

Publication Publication Date Title
CN106090603B (en) Liquefied petroleum gas residual liquid recovery system and method
CN203082530U (en) L-CNG (liquefied-compressed natural gas) station
WO2017031986A1 (en) Lng fueling station employing bog energy storage and pressure differential
CN103672394B (en) A kind of without pump LNG refueling system and LNG Liquefied natural gas processing method
CN102913752B (en) Unloading and liquid adding device for skid-type liquid adding station and unloading and liquid adding method
CN204062466U (en) A kind of LNG filling station waterborne
CN203131417U (en) Skid-mounted type self-powered LNG (liquefied natural gas) filling station with BOG (boiled off gas) recovery function
CN204042430U (en) A kind of cryogenic gas reliquefaction installation of simple and feasible
CN203656565U (en) Pump-free LNG (Liquefied Natural Gas) filling system
CN101298244A (en) Hydraulic natural gas automobile secondary gas filling station
CN102149958B (en) Gas-filling system having a residual-gas recovery device, and residual-gas recovery method
CN208365193U (en) A kind of LNG storage tank
CN101509600A (en) Primary gas filling station
CN102425725B (en) System and method for reclaiming boil off gas (BOG) in liquefied natural gas (LNG) storage tank
CN205908997U (en) Residual liquid recovery system for liquefied petroleum gas
CN105020574A (en) L-CNG gas station
CN203115497U (en) Residual gas recovery device for liquefied natural gas tanker
CN202327654U (en) System for recycling boil-off gas (BOG) in liquefied natural gas (LNG) storage tank
CN207394353U (en) A kind of differential LNG tank cars charging system
CN2900416Y (en) Closed residual liquid and gas recovery and cleaning device
CN101780940A (en) Son-mother gas filling station
CN205026385U (en) Small -size liquefied natural gas regulator that gasifies
CN107559583A (en) Gas station constant temperature level pressure fast quantification fills control technique and system
CN104819378B (en) Liquefied natural gas (LNG) automobile liquid adding device
CN207554026U (en) Automatic filling pry for defoaming of natural gas well mouth

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant