CN110345384A - A kind of shale gas hydrate slurry rapid transport discharge mechanism and method - Google Patents
A kind of shale gas hydrate slurry rapid transport discharge mechanism and method Download PDFInfo
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- CN110345384A CN110345384A CN201910769263.1A CN201910769263A CN110345384A CN 110345384 A CN110345384 A CN 110345384A CN 201910769263 A CN201910769263 A CN 201910769263A CN 110345384 A CN110345384 A CN 110345384A
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- slurries
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- 239000002002 slurry Substances 0.000 title claims abstract description 232
- 238000000034 method Methods 0.000 title claims abstract description 55
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 230000007246 mechanism Effects 0.000 title claims abstract description 16
- 238000003860 storage Methods 0.000 claims abstract description 99
- 238000000926 separation method Methods 0.000 claims abstract description 57
- 230000008569 process Effects 0.000 claims abstract description 38
- 239000012530 fluid Substances 0.000 claims abstract description 36
- 238000001914 filtration Methods 0.000 claims abstract description 27
- 239000006200 vaporizer Substances 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 238000002309 gasification Methods 0.000 claims abstract description 18
- 238000007599 discharging Methods 0.000 claims abstract description 17
- 238000005485 electric heating Methods 0.000 claims abstract description 17
- 230000032258 transport Effects 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 239000000498 cooling water Substances 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- 239000012212 insulator Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000009834 vaporization Methods 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 42
- 238000005516 engineering process Methods 0.000 abstract description 8
- 150000004677 hydrates Chemical class 0.000 abstract description 6
- 230000008719 thickening Effects 0.000 abstract description 5
- 230000013011 mating Effects 0.000 abstract description 3
- 238000005119 centrifugation Methods 0.000 abstract description 2
- 239000002737 fuel gas Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 239000010410 layer Substances 0.000 description 5
- 239000003345 natural gas Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
- B01D36/045—Combination of filters with centrifugal separation devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/22—Tank vehicles
- B60P3/224—Tank vehicles comprising auxiliary devices, e.g. for unloading or level indicating
- B60P3/2245—Adaptations for loading or unloading
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/22—Tank vehicles
- B60P3/2295—Means for heating, cooling, or insulating tanks or equipments
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Transportation (AREA)
- Water Supply & Treatment (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention relates to a kind of shale gas hydrate slurry rapid transport discharge mechanism and methods, belong to gas hydrates storaging and transport technology field.Hydrate slurry liquid/gas separator is designed, separation upper section installs rotating wheel, and helical flow path is arranged in middle section, and the first fluid reservoir and slurries separation chamber is arranged in lower section, carries out the thickening of hydrate slurry fluid dewatering；Slurries tank car installs slurries vehicle-mounted storage tank, and mating urgent gasification system, safety instrumented systems are, it can be achieved that hydrate slurry safe storage and rapid transport；Air temperature type vaporizer, electric heating carburetor are installed in tank car chassis, set immersed pump in storage tank, in conjunction with mating pipe-line system, form four kinds of hydrate slurry fast discharging techniques.The present invention provides a kind of shale gas hydrate slurry rapid transport discharging method, slurries enter dewatering slurries separator along a tangential direction, through centrifugation, settle, be separated by filtration after in the storage of slurries vehicle-mounted storage tank and rapid transport is to user terminal, enter pipeline network of fuel gas in city after unloading by corresponding unloading process.
Description
Technical field
The present invention relates to a kind of shale gas hydrate slurry rapid transport discharge mechanism and methods, belong to gas hydrates
Technical field of transportation.
Background technique
Shale gas refers to preservation in rich organic matter mud shale and its interlayer, with absorption or free state for the side of being primarily present
The Unconventional gas of formula, main component are methane.Shale gas field gathering and transferring process are as follows: shale gas well is transported to by flow line
The well site Duo Jing, after pretreatment, apart from gas gathering station, well group is connected with gas collection main line by gas collection branch line farther out, transports to gas collection
It stands and carries out final process, be then directly entered gas gathering station apart from the closer well group of gas gathering station.
Since shale gas exploitation has fast producing initial stage pressure drop, stable yields low output, in spies such as periods of low pressure production time length
Point, ground surface works also have the particularity and difficult point for being different from conventional gas field in planning and designing.For example, shale gas pipe network stores up
" surface gathering and transferring design scale is difficult really " present in transportation technique, " reverse irrigation of low pressure individual well ", " it is steady that new access gas well influences pipe network operation
It is qualitative ", " later period pressurization exploitation " the problems such as.
To avoid shale gas field gathering system in the different production phases from above-mentioned problem occur, gas hydrates can be passed through
The collection of storaging and transport technology progress shale gas is defeated and handles.The technology is the technology of an emerging development in recent years, 1m3Hydrate storage
150~180m3Natural gas, core concept are that solid hydrate is formed under high pressure low temperature using water and natural gas, are utilized
The self-shield effect property of hydrate, enables hydrate long term storage and transport under low-temperature atmosphere-pressure.Since the technology has simple process,
Lower production costs, synthesis and storage and transportation technique do not need very harsh pressure and temperature condition, self good storage capacity, from
The advantages that protective effect is strong and stability is high has it more relative to the storaging and transport technologies such as pipeline transportation, LNG, CNG, ANG excellent
Gesture.
Patent " a kind of gas hydrate storage and transportation apparatus ", 201310579317.0, open 103672403 B of notification number CN,
A kind of gas hydrates long distance delivery device persistently to freeze without external equipment and tie up pressure is provided, it is mountable in train and
Long-distance dispatching is carried out on transport vehicle, but the device is externally provided with LNG set in hydrate storage chamber, hydrate storage and transportation technology needs and LNG
Storaging and transport technology fit applications are transported with the storage for realizing gas hydrate, and the limitation of the application conditions of the technique is larger.
Patent " a kind of bulk gas hydrates storage and transportation apparatus ", 201820225880.6, open notification number CN
208041596 U develop a kind of blocky gas hydrates storage and transportation apparatus, with the haulagman such as train, cold-storage transporting automobile, ship
Tool matches, and carries out long-distance transportation, realizes that the decomposition of solid-state hydrate and gas export by injection circulating hot water, but solid-state
The thermal decomposition rate of hydrate is slower, and the required natural gas unloading time is longer.
At present for hydrate long range memory structure it is also very immature, however it remains many problems, such as be hydrated
Object preparation need high pressure low temperature environment, hydrate reserves it is small, it is defeated apart from it is short, maintain hydrate generate low temperature environment it is at high cost,
It is easily affected by the external environment, decomposition of hydrate needs additional heat injection etc..For solid-state hydrate, hydrate slurry preparation and
Condition of storage readily satisfies, and can greatly reduce energy consumption, and hydrate slurry storage and transportation form economy is higher.Meanwhile natural gas
Hydrate slurry has good mobility, and slurry transporting equipment is simple, avoids the inconvenience of natural gas solid-state hydrate handling transport.
For this purpose, we design a kind of hydrate slurry without external equipment refrigeration according to hydrate slurry condition of storage
Storage device can be used for the gas hydrate slurry liquid conveying of long range, to avoid gas field gathering system due to shale gas yield
A series of the problems such as decline rate is fast, ductwork pressure and yield contradictory relation and later period newly-increased production capacity are uncertain difficulties of bring
Topic.
Summary of the invention
The purpose of the present invention is to provide a kind of shale gas hydrate slurry rapid transport discharge mechanism and method, from ensuring
The height of hydrate slurry storage and transportation apparatus safe operation is set out, the generation of comprehensive analysis gas hydrate slurry liquid, condition of storage,
Insecurity factor that may be present in the conveying of consideration device, transhipment and uninstall process, in conjunction with shale gas field surface gathering system
Productive prospecting carries out the transhipment discharge mechanism design of shale gas hydrate slurry, for surface gathering system provide it is a kind of it is safe, low at
This natural gas transports new way.
Present invention mainly solves following problems:
(1) hydrate slurry separative unit is designed, rotating wheel carries out hydrate slurry centrifugal dehydration with helical flow path and separates,
First fluid reservoir carries out hydrate slurry sedimentation separation, and slurries separation chamber carries out hydrate slurry and is separated by filtration.
(2) slurries vehicle-mounted storage tank structure is designed, setting horizontal electrode heating plate, vertical heating plate carry out accident conditions in tank
Urgent gasification process down realizes dehydration thickening rear slurry storage and transhipment in conjunction with the matched safety instrumented systems of slurries tank car.
(3) hydrate slurry fast discharging unit is designed, air temperature type vaporizer, electric heating carburetor is arranged in tank car chassis,
Storage tank is equipped with immersed pump, and it is fast can to carry out hydrate slurry by four kinds of different gasification pressurization modes for the mating pipe-line system of control box
Speed unloading.
(4) a kind of shale gas hydrate slurry rapid transport discharging method is designed, it is vehicle-mounted in slurries after dewatering slurries thickening
It is stored in storage tank, conveys tank car rapid transport to gas point is used by slurries, starched using four kinds of processands that tank car carries
Liquid is unloaded.
To achieve the goals above, technical scheme is as follows.
A kind of shale gas hydrate slurry rapid transport discharge mechanism, including hydrate slurry separative unit, slurry storage
Transport unit, slurries fast discharging unit；
The hydrate slurry separative unit includes dewatering slurries separator 1, rotating wheel 2, helical flow path 3, the first liquid storage
Room 4, slurries separation chamber 5, the first cooling water return pipe 6, the second cooling water return pipe 7, bracket 8；The slurry storage transshipment note
Member includes headstock 9, tank car chassis 10, slurries vehicle-mounted storage tank 11, control box 12, urgent gasification system, safety instrumented systems, pipeline
System；The slurries fast discharging unit includes air temperature type vaporizer 13, electric heating carburetor 14, immersed pump 15；
The dewatering slurries separator 1 is made of separation upper section, separation middle section, separation lower section, and inside is equipped with rotating wheel
2, helical flow path 3, the first fluid reservoir 4, slurries separation chamber 5, are mounted on slurries vehicle-mounted storage tank 11 by bracket 8, point
From upper section be equipped with rotating wheel 2, the separation middle section be equipped with helical flow path 3, the separation lower section be equipped with the first fluid reservoir 4,
Slurries separation chamber 5,4 lower part of the first fluid reservoir are equipped with the first cooling water return pipe 6,5 lower part of slurries separation chamber
Equipped with the second cooling water return pipe 7, the headstock 9 is connect with tank car chassis 10, and 10 top of tank car chassis is equipped with slurries
Vehicle-mounted storage tank 11, control box 12, lower part are equipped with air temperature type vaporizer 13, electric heating carburetor 14, the slurries vehicle-mounted storage tank 11
Inside is equipped with urgent gasification system, immersed pump 15, is equipped with safety instrumented systems, pipe-line system in the control box 12.
Further, the helical flow path 3 is the spiral pipe that a diameter is constant, internal diameter is gradually reduced, pipeline
Wall surface is equipped with the aperture that several diameters are 1~3mm.
Further, the slurries separation chamber 5 is located inside fluid reservoir 4, what combination shape was combined with two
Concentric cylinder is identical.
Further, the slurries separation chamber 5 is by slurries filtering table 16, the second fluid reservoir 17,18 structure of slurries delivery pipe
At；
The slurries filtering table 16 is a hollow round table-like porous filter plate, is located at 17 top of the second fluid reservoir,
Slurries delivery pipe 18 is set inside second fluid reservoir 17.
Further, the slurries vehicle-mounted storage tank 11 is the storage tank of an inner/outer tube double-layer structure, and interior cylinder material uses
0Cr18Ni9 austenitic stainless steel, outer cylinder material use Q345R low-alloy steel, and inner/outer tube backing material uses expoxy glass, every
Hot mode is high vacuum multilayer insulation.
Further, the urgent gasification system includes conducting rod 19, insulator 20, horizontal heating plate 21, conductive plate
22, vertical heating plate 23；
The conducting rod 19 is equipped with insulator 20, connects at the top of horizontal heating plate 21, with slurries vehicle-mounted storage tank 11, described
Conductive plate 22 be equipped with vertical heating plate 23, connect with 11 bottom of slurries vehicle-mounted storage tank.
A kind of shale gas hydrate slurry rapid transport discharging method, specifically includes following steps；
S1, centrifuge separation: hydrate slurry enters dewatering slurries separator 1 through slurries inlet tube with tangential direction, rotation
2 rotation of wheel, hydrate slurry enter helical flow path 3 after circular motion and are centrifuged, and drop passes through under the action of the centrifugal
3 wall surface aperture of helical flow path moves to 1 inner wall of dewatering slurries separator, after collecting at after small liquid stream enter the first fluid reservoir 4, water
Polymer beads with do not separate drop along helical flow path 3 enter slurries separation chamber 5；
S2, be separated by filtration: in slurries separation chamber 5, hydrate particle with do not separate drop slurries filtering table 16 carry out
It is separated by filtration, liquid stream enters the second fluid reservoir 17 through 16 aperture of slurries filtering table, and the hydrate particle after separation is conveyed through slurries
Pipe 18 enters slurries vehicle-mounted storage tank 11；
S3, it settles, be separated by filtration: collecting into the hydrate particle carried secretly in the liquid stream of the first fluid reservoir 4 and be suspended in water
Upper layer, as the time increases, water level is gradually increasing in the first fluid reservoir 4, after water level rises to 5 height of slurries separation chamber,
Hydrate slurry enters slurries separation chamber 5 by overflow, and slurries vehicle-mounted storage tank is entered after slurries separation chamber 5 is separated by filtration
11；
S4, storage transhipment: hydrate slurry stores in slurries vehicle-mounted storage tank 11, and the water separated is through the first cooling water
Return pipe 6, the second cooling water return pipe 7 are back to water tank and are recycled, and slurries vehicle-mounted storage tank 11 is completed will after loading
Slurries are transported to downstream gas point, when emergency episode occurs, using the urgent gasification system being arranged in slurries vehicle-mounted storage tank 11 into
The urgent unloading processing of row；
S5, fast discharging: make after being unloaded, being gasified by the unloading process that tank car carries with gas point for gas peak regulation
With.
Further, unloading process described in step S5 includes that tank car carries the pressurization of immersed pump 15 unloading process, using sky
Warm formula vaporizer 13 is pressed unloading process with electric heating carburetor 14 from pressure unloading process, using air temperature type vaporizer 13 certainly, is combined
Formula unloading process；
The combined type unloading process is the combined type unloading work that immersed pump 15, air temperature type vaporizer 13 are carried using tank car
Skill or the combined type unloading process that immersed pump 15, air temperature type vaporizer 13, electric heating carburetor 14 are carried using tank car.
Invention has the beneficial effects that:
(1) it is de- to carry out hydrate slurry for the modes such as centrifugation, filtering, sedimentation designed by hydrate slurry separative unit
Water thickening, improves hydrate slurry concentration in vehicle-mounted storage tank, increases effective gas-storing capacity of hydrate slurry tank car.
(2) the urgent gasification structure of slurries vehicle-mounted storage tank is designed, horizontal electrode heating plate, vertical heating plate are set in tank,
The Quick-gasifying processing of hydrate slurry under accident conditions can be achieved.
(3) the slurries vehicle-mounted storage tank of inner/outer tube double-layer structure is designed, interior cylinder material uses 0Cr18Ni9 austenitic stainless steel,
Outer cylinder material uses Q345R low-alloy steel, and heat-insulated mode is high vacuum multilayer insulation, freezes without external equipment, can effectively keep away
Exempt from slurry storage transport process to gasify, guarantees the safe storage of hydrate slurry.
(4) hydrate slurry tank car is unloaded equipped with air temperature type vaporization pressurization, electric heating vaporization pressurization is unloaded, immersed pump is pressurized
It unloads and combined type is pressurized four kinds of included processands of unloading, lower according to the actual situation can carry out hydrate slurry Quick-unloading.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of shale gas hydrate slurry rapid transport discharge mechanism in the embodiment of the present invention.
Fig. 2 is that shale gas hydrate slurry rapid transport unloads flow diagram in the embodiment of the present invention.
Fig. 3 is the main view of dewatering slurries separator in the embodiment of the present invention.
Fig. 4 is dewatering slurries separator " A-A " view in the embodiment of the present invention.
Fig. 5 is the structural schematic diagram of slurries vehicle-mounted storage tank in the embodiment of the present invention.
Fig. 6 is the schematic diagram of the safety control system of slurries vehicle-mounted storage tank in the embodiment of the present invention.
Fig. 7 is the flow diagram of hydrate slurry processand in the embodiment of the present invention.
Specific embodiment
A specific embodiment of the invention is described with reference to the accompanying drawing, to better understand the present invention.
Embodiment
In the present embodiment, Fig. 1 is the structure of shale gas hydrate slurry rapid transport discharge mechanism in the embodiment of the present invention
Schematic diagram, shale gas hydrate slurry rapid transport discharge mechanism include hydrate slurry separative unit, slurry storage transshipment note
Member, slurries fast discharging unit；
The hydrate slurry separative unit includes dewatering slurries separator 1, rotating wheel 2, helical flow path 3, the first liquid storage
Room 4, slurries separation chamber 5, the first cooling water return pipe 6, the second cooling water return pipe 7, bracket 8；The slurry storage transshipment note
Member include headstock 9, tank car chassis 10, slurries vehicle-mounted storage tank 11, control box 12, urgent gasification system S1, safety instrumented systems S2,
Pipe-line system S3；The slurries fast discharging unit includes air temperature type vaporizer 13, electric heating carburetor 14, immersed pump 15；
The dewatering slurries separator 1 is made of separation upper section, separation middle section, separation lower section, and inside is equipped with rotating wheel
2, helical flow path 3, the first fluid reservoir 4, slurries separation chamber 5, are mounted on slurries vehicle-mounted storage tank 11 by bracket 8, point
From upper section be equipped with rotating wheel 2, the separation middle section be equipped with helical flow path 3, the separation lower section be equipped with the first fluid reservoir 4,
Slurries separation chamber 5,4 lower part of the first fluid reservoir are equipped with the first cooling water return pipe 6,5 lower part of slurries separation chamber
Equipped with the second cooling water return pipe 7, the headstock 9 is connect with tank car chassis 10, and 10 top of tank car chassis is equipped with slurries
Vehicle-mounted storage tank 11, control box 12, lower part are equipped with air temperature type vaporizer 13, electric heating carburetor 14, the slurries vehicle-mounted storage tank 11
Inside is equipped with urgent gasification system S1, immersed pump 15, is equipped with safety instrumented systems S2, pipe-line system S3 in the control box 12.
Fig. 2 is that shale gas hydrate slurry rapid transport unloads flow diagram, shale gas hydration in the embodiment of the present invention
Object slurries rapid synthesis process flow are as follows: shale gas well transports to well Cong Pingtai by flow line, is removed by desanding sled CSQ
After sand processing, enter hydrate reactor after converging by gas collection header in the form of bubbling, water is pressurized latter portion in water tank CSG
Point enter atomizing spray unit by first flow distributing valve V1 enters hydrate reactor in the form of water mist, and a part of water leads to
Cross second flow distributing valve V2, the open/close states of third flow divider valve V3 are entered injection unit and entered water in a manner of water flow jet
Close object reactor.Data acquisition module passes through data transmission module for system pressure, temperature, gas-liquid flow, valve opening state
Etc. information be transmitted to data processing module, method is quickly closed according to shale gas hydrate slurry, carries out hydrate generating rate, life
Calculated at amount, relevant parameter and calculated result is stored in data storage module, parameter control module hydrate reactor pressure,
Temperature, degree of supercooling control quickly generate water when it meets hydration reaction condition, shale gas and water in hydrate reactor FYQ
Object slurries are closed, and enter slurry tank vehicle CC, rapid transport after carrying out dewatering slurries thickening by hydrate slurry liquid/gas separator FLQ3
It to terminal gas point, is stored in after being unloaded by processand in storage tank CG, for urban pipe network peak regulation after vaporizer QHQ gasification
It uses.
Fig. 3 is the main view of dewatering slurries separator in the embodiment of the present invention, and helical flow path 3 is in dewatering slurries separator
The spiral pipe that one diameter is constant, internal diameter is gradually reduced, pipeline wall surface are equipped with the aperture that several diameters are 1~3mm.
Fig. 4 is dewatering slurries separator " A-A " view in the embodiment of the present invention.As shown in Figure 3, Figure 4, the slurries point
It is located inside fluid reservoir 4 from room 5, slurries described in the identical of the concentric cylinder that combination shape is combined with two separate
Room 5 is made of slurries filtering table 16, the second fluid reservoir 17, slurries delivery pipe 18, and the slurries filtering table 16 is one hollow
Round table-like porous filter plate, be located at the top of the second fluid reservoir 17, slurries delivery pipe be set inside second fluid reservoir 17
18。
Fig. 5 is the structural schematic diagram of slurries vehicle-mounted storage tank in the embodiment of the present invention, and the slurries vehicle-mounted storage tank 11 is one
The storage tank of a inner/outer tube double-layer structure, interior cylinder material use 0Cr18Ni9 austenitic stainless steel, and outer cylinder material uses the low conjunction of Q345R
Jin Gang, inner/outer tube backing material use expoxy glass, and heat-insulated mode is high vacuum multilayer insulation.
The urgent gasification system includes conducting rod 19, insulator 20, horizontal heating plate 21, conductive plate 22, adds vertically
Hot plate 23；The conducting rod 19 is equipped with insulator 20, connects at the top of horizontal heating plate 21, with slurries vehicle-mounted storage tank 11, described
Conductive plate 22 be equipped with vertical heating plate 23, connect with 11 bottom of slurries vehicle-mounted storage tank.
Fig. 6 is the schematic diagram of the safety control system of slurries vehicle-mounted storage tank in the embodiment of the present invention, mainly includes into drain
System, air inlet system and exhaust system, I&C system security system, evacuation system.Hydrate slurry by V1 valve, that V2 valve enters slurries is vehicle-mounted
Storage tank, gas enters gas concentration unit by V4 valve, V5 valve in tank, and storage tank is arranged fluid level indicator and carries out slurry loading, if
Inner canister pressure gauge is set, in favor of the situation of change of observed content device pressure at any time in driving process；It is provided at the top of storage tank
One shell safe explosion-proof device S3；Storage tank valve one end arranges vacuum evacuation device VV and surveys full device MV, to operate and to examine
It surveys；It unloads when operating, slurries enter after tank car carries vaporizer pr gasification through V6 valve returns to slurries vehicle-mounted storage tank, and pressure of storage tank increases
Certain value is added to, slurries to V3 valve, V1 valve convey outward.The mounting device of system setting further includes S1, S2 safety on pipeline
Bleeder valve and fire arrester D.
Fig. 7 is the flow diagram of hydrate slurry processand in the embodiment of the present invention, and shale gas hydrate slurry is fast
Speed transhipment discharging method, specifically includes following steps；
S1, centrifuge separation: hydrate slurry enters dewatering slurries separator 1 through slurries inlet tube with tangential direction, rotation
2 rotation of wheel, hydrate slurry enter helical flow path 3 after circular motion and are centrifuged, and drop passes through under the action of the centrifugal
3 wall surface aperture of helical flow path moves to 1 inner wall of dewatering slurries separator, after collecting at after small liquid stream enter the first fluid reservoir 4, water
Polymer beads with do not separate drop along helical flow path 3 enter slurries separation chamber 5；
S2, be separated by filtration: in slurries separation chamber 5, hydrate particle with do not separate drop slurries filtering table 16 carry out
It is separated by filtration, liquid stream enters the second fluid reservoir 17 through 16 aperture of slurries filtering table, and the hydrate particle after separation is conveyed through slurries
Pipe 18 enters slurries vehicle-mounted storage tank 11；
S3, it settles, be separated by filtration: collecting into the hydrate particle carried secretly in the liquid stream of the first fluid reservoir 4 and be suspended in water
Upper layer, as the time increases, water level is gradually increasing in the first fluid reservoir 4, after water level rises to 5 height of slurries separation chamber,
Hydrate slurry enters slurries separation chamber 5 by overflow, and slurries vehicle-mounted storage tank is entered after slurries separation chamber 5 is separated by filtration
11；
S4, storage transhipment: hydrate slurry stores in slurries vehicle-mounted storage tank 11, and the water separated is through the first cooling water
Return pipe 6, the second cooling water return pipe 7 are back to water tank and are recycled, and slurries vehicle-mounted storage tank 11 is completed will after loading
Slurries are transported to downstream gas point, when emergency episode occurs, using the urgent gasification system being arranged in slurries vehicle-mounted storage tank 11 into
The urgent unloading processing of row；
S5, fast discharging: make after being unloaded, being gasified by the unloading process that tank car carries with gas point for gas peak regulation
With.
Unloading process described in step S5 includes that tank car carries the pressurization of immersed pump 15 unloading process, using air temperature type vaporizer
13 press unloading process, combined type unloading process from pressure unloading process, using air temperature type vaporizer 13 and electric heating carburetor 14 certainly；
The combined type unloading process is the combined type unloading work that immersed pump 15, air temperature type vaporizer 13 are carried using tank car
Skill or the combined type unloading process that immersed pump 15, air temperature type vaporizer 13, electric heating carburetor 14 are carried using tank car.
The above processand includes 4 kinds of processes of unloading:
C1, pressurization unloading process: immersed pump 15 is carried using tank car, hydrate slurry pressurization is offloaded to storage tank CG；
C2, first are from pressure unloading process: being back to tank car after slurries gasify using air temperature type vaporizer 13 and press unloading certainly
To storage tank CG；
C3, second are from pressure unloading process: after successively slurries are gasified using air temperature type vaporizer 13, electric heating carburetor 14
It is back to tank car and is offloaded to storage tank CG from pressure；
C4, combined type unloading process: immersed pump 15, air temperature type vaporizer 13 are carried using tank car or dived using tank car is included
Liquid pump 15, air temperature type vaporizer 13, electric heating carburetor 14 combined type unloading process slurries are gasified after be back to tank car and unload
It is loaded onto storage tank CG.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (8)
1. a kind of shale gas hydrate slurry rapid transport discharge mechanism, it is characterised in that: including hydrate slurry separative unit,
Slurry storage transports unit, slurries fast discharging unit；
The hydrate slurry separative unit includes dewatering slurries separator (1), rotating wheel (2), helical flow path (3), the first storage
Liquid chamber (4), slurries separation chamber (5), the first cooling water return pipe (6), the second cooling water return pipe (7), bracket (8)；The slurry
Liquid storage transhipment unit includes headstock (9), tank car chassis (10), slurries vehicle-mounted storage tank (11), control box (12), urgent gasification system
System, safety instrumented systems, pipe-line system；The slurries fast discharging unit includes air temperature type vaporizer (13), electric heating vaporization
Device (14), immersed pump (15)；
The dewatering slurries separator (1) is made of separation upper section, separation middle section, separation lower section, and inside is equipped with rotating wheel
(2), helical flow path (3), the first fluid reservoir (4), slurries separation chamber (5) are mounted on slurries vehicle-mounted storage tank (11) by bracket (8)
On, the separation upper section is equipped with rotating wheel (2), and the separation middle section is equipped with helical flow path (3), and the separation lower section is set
There are the first fluid reservoir (4), slurries separation chamber (5), the first fluid reservoir (4) lower part is equipped with the first cooling water return pipe (6),
Slurries separation chamber (5) lower part is equipped with the second cooling water return pipe (7), and the headstock (9) and tank car chassis (10) are even
It connects, tank car chassis (10) top is equipped with slurries vehicle-mounted storage tank (11), control box (12), and lower part is equipped with air temperature type vaporizer
(13), electric heating carburetor (14), the slurries vehicle-mounted storage tank (11) is internal to be equipped with urgent gasification system, immersed pump (15), institute
It states and is equipped with safety instrumented systems, pipe-line system in control box (12).
2. shale gas hydrate slurry rapid transport discharge mechanism according to claim 1, it is characterised in that: the spiral shell
Eddy flow road (3) is the spiral pipe that a diameter is constant, internal diameter is gradually reduced, and it is 1~3mm that pipeline wall surface, which is equipped with several diameters,
Aperture.
3. shale gas hydrate slurry rapid transport discharge mechanism according to claim 1, it is characterised in that: the slurry
Liquid separation chamber (5) is located at fluid reservoir (4) inside, and the concentric cylinder that combination shape is combined with two is identical.
4. shale gas hydrate slurry rapid transport discharge mechanism according to claim 1, it is characterised in that: the slurry
Liquid separation chamber (5) is made of slurries filtering table (16), the second fluid reservoir (17), slurries delivery pipe (18)；
The slurries filtering table (16) is a hollow round table-like porous filter plate, is located at the top of the second fluid reservoir (17),
Slurries delivery pipe (18) are set inside second fluid reservoir (17).
5. shale gas hydrate slurry rapid transport discharge mechanism according to claim 1, it is characterised in that: the slurry
Liquid vehicle-mounted storage tank (11) is the storage tank of an inner/outer tube double-layer structure, and interior cylinder material uses 0Cr18Ni9 austenitic stainless steel, outside
Cylinder material uses Q345R low-alloy steel, and inner/outer tube backing material uses expoxy glass, and heat-insulated mode is high vacuum multilayer insulation.
6. shale gas hydrate slurry rapid transport discharge mechanism according to claim 1, it is characterised in that: described is tight
Anxious gasification system includes conducting rod (19), insulator (20), horizontal heating plate (21), conductive plate (22), vertical heating plate (23)；
The conducting rod (19) is equipped with insulator (20), horizontal heating plate (21), connect with slurries vehicle-mounted storage tank (11) top,
The conductive plate (22) is equipped with vertical heating plate (23), connect with slurries vehicle-mounted storage tank (11) bottom.
7. a kind of shale gas hydrate slurry rapid transport discharging method, it is characterised in that: specifically include following steps；
S1, centrifuge separation: hydrate slurry enters dewatering slurries separator (1), rotating wheel through slurries inlet tube with tangential direction
(2) it rotates, hydrate slurry enters helical flow path (3) after circular motion and is centrifuged, and drop leads under the action of the centrifugal
Cross helical flow path (3) wall surface aperture and move to dewatering slurries separator (1) inner wall, after collecting at after small liquid stream enter the first liquid storage
Room (4), hydrate particle with do not separate drop along helical flow path (3) enter slurries separation chamber (5)；
S2, be separated by filtration: in slurries separation chamber (5), hydrate particle with do not separate drop in slurries filtering table (16) progress
It is separated by filtration, liquid stream enters the second fluid reservoir (17) through slurries filtering table (16) aperture, and the hydrate particle after separation is through slurries
Delivery pipe (18) enters slurries vehicle-mounted storage tank (11)；
S3, it settles, be separated by filtration: collecting into the hydrate particle carried secretly in the liquid stream of the first fluid reservoir (4) and be suspended in water
Upper layer, as the time increases, the first fluid reservoir (4) interior water level is gradually increasing, when water level rises to slurries separation chamber (5) height
Afterwards, hydrate slurry enters slurries separation chamber (5) by overflow, and slurries vehicle is entered after slurries separation chamber (5) are separated by filtration
It carries storage tank (11)；
S4, storage transhipment: hydrate slurry storage in slurries vehicle-mounted storage tank (11), the water separated are returned through the first cooling water
Flow tube (6), the second cooling water return pipe (7) are back to water tank and are recycled, and slurries vehicle-mounted storage tank (11) is completed to load
Slurries are transported to downstream gas point afterwards, when emergency episode occurs, using the urgent gasification being arranged in slurries vehicle-mounted storage tank (11)
System carries out urgent unloading processing；
S5, fast discharging: it is used after being unloaded, being gasified by the unloading process that tank car carries with gas point for gas peak regulation.
8. shale gas hydrate slurry rapid transport discharging method according to claim 7, it is characterised in that: step S5 institute
The unloading process stated includes that tank car carries immersed pump (15) pressurization unloading process, unloads work from pressure using air temperature type vaporizer (13)
Skill presses unloading process, combined type unloading process using air temperature type vaporizer (13) and electric heating carburetor (14) certainly；
The combined type unloading process is the combined type unloading work that immersed pump (15), air temperature type vaporizer (13) are carried using tank car
Skill or the combined type unloading process for using tank car included immersed pump (15), air temperature type vaporizer (13), electric heating carburetor (14).
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| CN114962977A (en) * | 2022-04-21 | 2022-08-30 | 西南石油大学 | Natural gas hydrate storage and regasification device and method |
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