EP4047259A1 - Low-temperature full containment tank having low-liquid-level material extraction device - Google Patents
Low-temperature full containment tank having low-liquid-level material extraction device Download PDFInfo
- Publication number
- EP4047259A1 EP4047259A1 EP20891908.4A EP20891908A EP4047259A1 EP 4047259 A1 EP4047259 A1 EP 4047259A1 EP 20891908 A EP20891908 A EP 20891908A EP 4047259 A1 EP4047259 A1 EP 4047259A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tank
- venturi mixer
- low
- liquid level
- material circulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 121
- 239000007788 liquid Substances 0.000 title claims abstract description 64
- 238000000605 extraction Methods 0.000 title claims abstract description 48
- 238000009792 diffusion process Methods 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000000284 extract Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000001273 butane Substances 0.000 description 3
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 3
- 239000001294 propane Substances 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C3/00—Vessels not 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
- 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
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not 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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
-
- 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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0119—Shape cylindrical with flat end-piece
-
- 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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/03—Orientation
- F17C2201/032—Orientation with substantially vertical main axis
-
- 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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/052—Size large (>1000 m3)
-
- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
-
- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0626—Multiple walls
- F17C2203/0629—Two walls
-
- 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
- F17C2205/0326—Valves electrically actuated
-
- 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/035—Propane butane, e.g. LPG, GPL
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/013—Single phase liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- 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
- 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
- F17C2227/0114—Propulsion of the fluid with vacuum injectors, e.g. venturi
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0135—Pumps
- F17C2227/0142—Pumps with specified pump type, e.g. piston or impulsive type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0171—Arrangement
- F17C2227/0178—Arrangement in the vessel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0171—Arrangement
- F17C2227/0185—Arrangement comprising several pumps or compressors
-
- 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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0408—Level of content in the vessel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
- The present disclosure relates to the technical field of low-temperature liquefied gas storage, and more particularly, to a cryogenic full containment storage tank having a low liquid level material extraction device.
- Substances that are gaseous at normal temperature and pressure but can be liquefied after proper freezing can be safely and efficiently stored in storage tanks with low temperature and normal pressure. Substances in the petrochemical industry that meet this characteristic include methane, ethylene, ethane, propylene, propane, butene, butane and other hydrocarbons , and substances in the chemical industry that meet this characteristic include ammonia . As methane is the main component of natural gas, and propane and butane are the main components of liquefied gas, they are mainly used as industrial and civil clean energy. As people pay more attention to environmental issues around the world, the consumption of clean energy such as liquefied hydrocarbons and liquefied natural gas (hereinafter referred to as LNG) is increasing. In addition, the number and scale of production of petrochemical enterprises that deeply process hydrocarbons as raw materials are also increasing, and the demand for large low-temperature storage tanks to store these clean energy and liquefied hydrocarbons also rises. Based on considerations for safety, the existing large cryogenic full containment storage tanks are not allowed to open holes on the wall and bottom. The pipelines connected to the storage tank are all in a top-in and top-out way, that is, the liquid is inputted and outputted from the roof of the storage tank. Due to the large diameter and the large height of the storage tank, the height of the tank dome plus the height of the tank wall is far greater than the suction vacuum height that the liquid can be pumped up to, so the discharging pump can only work under the liquid, that is, the discharging pump is a cryogenic submersible pump.
- The cryogenic submersible pump requires sufficient low-temperature medium in the storage tank when starting, so the minimum liquid level must not be lower than the minimum operable liquid level required by the cryogenic submersible pump. At present, the minimum operable liquid level of the cryogenic submersible pump plus a certain safety margin is usually about 1.2 m, that is, the zone below 1.2 m from the bottom of the cryogenic full containment storage tank is usually a "dead zone" for operation, which results in a large ineffective working volume at the bottom of the tank. For example, an inner tank diameter of 50000 m3 cryogenic full containment storage tank is about Φ 46 m, so a volume with a height of 1.2 m is about 1994 m3. An inner tank diameter of 80000 m3 cryogenic full containment storage tank is about Φ 59 m, so a volume with a height of 1.2 m height is about 3280 m3. An inner tank diameter of 160000 m3 cryogenic full containment storage tank is about Φ 87 m, and a volume with a height of 1.2 m height is about 7134 m3.
- The material at a bottom of the tank in range of the ineffective working volume cannot be discharged out of the tank through the cryogenic submersible pump. If the storage tank needs to perform outage maintenances, the material at the bottom can only be discharged by vaporization, which consumes a lot of energy and also needs a long period of time.
- An object of the present disclosure is to provide a cryogenic full containment storage tank having a low liquid level material extraction device, so as to solve the technical problem in the prior art that the ineffective working volume at the bottom of the storage tank is too large and there are too much residual medium that cannot be extracted.
- In order to solve the above-mentioned technical problems, the present disclosure adopts the following technical solutions: a cryogenic full containment storage tank having a low liquid level material extraction device, comprising: an inner tank, an outer tank surrounding a periphery of the inner tank, an operation platform arranged on a top of the outer tank, and a material extraction device capable of extracting low liquid level material. The material extraction device capable of extracting low liquid level material comprises: a material circulation tank arranged on the operation platform, which is configured to contain low-temperature medium; a first Venturi mixer arranged at a bottom of the inner tank, wherein two ends of the first Venturi mixer are respectively an inlet and an outlet, and an outer periphery of the first Venturi mixer is provided with a suction hole; an inlet pipeline connected an outlet of the material circulation tank to the inlet of the first Venturi mixer; an outlet pipeline connected the outlet of the first Venturi mixer to an inlet of the material circulation tank; and a cryopump, arranged on the operation platform, and connected to the inlet pipeline; wherein while performing a medium extraction, the low-temperature medium in the material circulation tank enter the first Venturi mixer through the cryopump and the inlet pipeline, so that the low-temperature medium in the inner tank is capable of entering the first Venturi mixer through the suction hole under an action of a pressure difference, and entering the material circulation tank through the outlet pipeline after mixing.
- The first Venturi mixer comprises a constriction section, a throat section and a diffusion section connected in sequence. A large-end opening of the constriction section is configured as the inlet of the first Venturi mixer, and is connected to the inlet pipeline. A large-end opening of the diffusion section is configured as the outlet of the first Venturi mixer, and is connected to the outlet pipeline. Two ends of the throat section are respectively connected to a small-end opening of the constriction section and a small-end opening of the diffusion section. The suction hole is opened corresponding to an outer periphery of the throat section, and is communicated with an interior of the throat section. The first Venturi mixer is placed horizontally in the inner tank.
- The first Venturi mixer further comprises a suction cavity arranged around the outer periphery of the throat section and communicated with the interior of the throat section. Two ends of the suction cavity are respectively connected to an outer wall of the constriction section and an outer wall of the diffusion section. The suction hole is opened on an outer peripheral wall of the suction cavity.
- The suction hole of the first Venturi mixer is opened on an outer peripheral wall of the throat section. The first Venturi mixer further comprises a suction pipe correspondingly arranged at the suction hole, and the suction pipe is communicated with an interior of the inner tank. The material circulation tank is further provided with a medium output port for outputting the low-temperature medium to the outside, and a liquid level control mechanism is provided to control an opening and closing of the medium output port when a preset liquid level is reached, and the preset liquid level is higher than a liquid level required for an operation of the cryopump during medium extraction.
- The liquid level control mechanism is an overflow weir arranged in the material circulation tank. An outlet of the material circulation tank is communicated with an inner space of the overflow weir, and the medium output port is communicated with an outer space of the overflow weir.
- The liquid level control mechanism is an overflow port arranged on a side wall of the material circulation tank, wherein a height of the overflow port is higher than the outlet of the material circulation tank, and the overflow port is communicated with the medium output port.
- The liquid level control mechanism comprises an electrically connected liquid level gauge and a valve, wherein the liquid level gauge is configured to detect a liquid level in the material circulation tank, and the valve is correspondingly arranged at the medium output port.
- The inlet pipeline is provided with a control valve to adjust a flow rate in the inlet pipeline, the control valve is located outside the outer tank, and the cryopump is located between the material circulation tank and the control valve.
- The material extraction device further comprises a pressurizing unit, which is arranged on the outlet pipeline to increase a power for the low-temperature medium to flow to the material circulation tank.
- The pressurizing unit comprises: a second Venturi mixer, a suction hole and an outlet of which are connected in series to the outlet pipeline; a pressurizing inlet pipeline connected an inlet of the second Venturi mixer to the outlet of the material circulation tank; and a pressurizing control valve arranged on the pressurizing inlet pipeline to adjust a flow rate in the pressurizing inlet pipeline.
- It can be seen from the above technical solutions that the present disclosure has at least the following advantages and positive effects: the cryogenic full containment storage tank of the present disclosure is equipped with a material extraction device capable of extracting low liquid level material, The material extraction device comprises a material circulation tank, a cryopump arranged at an operation platform at a top of the tank, a Venturi mixer located at a bottom of the inner tank and corresponding connecting pipelines. The low-temperature medium in the material circulation tank enters the Venturi mixer through the cryopump. According to Bernoulli's principle and momentum transfer principle, the low-temperature medium will form a local low-pressure and high-speed flow entrainment effect in the Venturi mixer, making the low-temperature medium enter the Venturi mixer through the suction hole under the action of the pressure difference, and the mixed low-temperature medium returns to the material circulation tank together. During the cycle, the flow rate of the low-temperature medium returned to the material circulation tank is greater than the flow rate of the low-temperature medium pumped out from the material circulation tank, and the difference is the extracted low-temperature medium.
- The material extraction device is mainly used as a supplementary discharge measure after the submersible pump in the cryogenic full containment storage tank is pumped to the minimum liquid level and shut down. This extraction device can extract the low liquid level low-temperature medium that is originally in the "dead zone" for operation, and the low-temperature medium above the liquid level where the suction hole of the Venturi mixer is located can be extracted by the material extraction device. As a result, the liquid level of the cryogenic full containment storage tank can be lowered to the position where the suction hole or the suction pipe of the first Venturi mixer is located, which is significantly lower than the minimum operable liquid level required by the submersible pump in the prior art, so that the ineffective volume of the cryogenic full containment storage tank can be significantly reduced, and the volume utilization rate of the tank can be improved. In the case of the same tank size, the effective working volume of the full containment storage tank can be increased. In the case of the same tank size, the effective working volume of the full containment storage tank can be increased. In the case of a certain effective working volume, the height of the inner and outer tanks can be reduced, thereby saving engineering investment.
-
-
FIG. 1 is a schematic structural diagram of a cryogenic full containment storage tank according to an embodiment of the present disclosure. -
FIG. 2 is a schematic structural diagram of a material extraction device inFIG. 1 . -
FIG. 3 is a schematic diagram showing a mixing principle of the low-temperature medium in a first Venturi mixer inFIG. 2 . -
FIG. 4 is a schematic structural diagram of the cryogenic full containment storage tank according to another embodiment of the present disclosure. -
FIG. 5 is a schematic structural diagram of the material extraction device inFIG. 4 . -
FIG. 6 is a schematic structural diagram of another Venturi mixer. - The descriptions of the reference numerals are as follows: 1- inner tank; 2- outer tank; 3-operation platform; 4- pump column; 5- submersible pump; 6/6a- material extraction device; 61/61a- material circulation tank; 6101/6101a- outlet; 6102/6102a- inlet; 6103/6103a- medium outlet; 6104a- overflow outlet; 611- overflow weir; 62- first Venturi mixer; 621- constriction section; 622/622b- throat section; 623- diffusion section; 624- suction cavity; 62b- Venturi mixer; 625b- suction pipe; 6201- inlet; 6202/6202b- suction hole; 6203- outlet; 63- inlet pipeline; 64/64a- outlet pipeline; 641a- first outlet section; 642a- second outlet section; 65-cryopump; 66- control valve; 67- pressurizing unit; 671- second Venturi mixer; 6711- inlet; 6712- suction hole ; 6713- outlet; 672- pressurizing inlet pipeline; 673- pressurizing control valve.
- Exemplary embodiments embodying the features and advantages of the present disclosure will be described in detail in the following description. It should be understood that the present disclosure may have various changes in different embodiments without departing from the scope of the present disclosure, and the descriptions and drawings therein are essentially used for illustrating rather than limiting the present disclosure.
- The present disclosure provides a cryogenic full containment storage tank for storing liquefied low-temperature medium. The low-temperature medium may be a hydrocarbon such as methane, ethylene, ethane, propylene, propane, butene and butane, and may also be ammonia commonly used in the chemical industry.
- Referring to
FIG. 1 , the cryogenic full containment storage tank provided in this embodiment generally includes aninner tank 1 for storing the low-temperature medium, anouter tank 2 surrounding a periphery of theinner tank 1, anoperation platform 3 arranged on a top of theouter tank 2, apump column 4 extends through the top of theouter tank 2 to a bottom of theinner tank 1, asubmersible pump 5 arranged in thepump column 4, and amaterial extraction device 6 for extracting the low liquid level material from the bottom of theinner tank 1. - Each of the
inner tank 1 and theouter tank 2 generally includes a bottom plate arranged horizontally and a cylindrical body erected on the bottom plate. A heat insulating layer is provided between the bottom plate of theinner tank 1 and the bottom plate of theouter tank 2, and a heat insulating layer is provided between the cylindrical body of theinner tank 1 and the cylindrical body of theouter tank 2. A dome is provided on the top of theouter tank 2, a top plate is suspended below the dome, and a heat insulating layer is also arranged between the dome and the top plate. The top plate is connected to theinner tank 1 in a soft sealing manner. Thepump column 4 extends through the top of theouter tank 2 to the bottom of theinner tank 1. Thesubmersible pump 5 is arranged at a bottom of thepump column 4 and is immersed in the low-temperature medium of theinner tank 1, which is configured to transport the low-temperature medium in theinner tank 1 to the outside through thepump column 4. Theoperation platform 3 is fixed on the top of theouter tank 2, which may be configured to accommodate various pipeline valves and working accessories which the cryogenic full containment storage tank is equipped with, allowing operators to perform work and maintenance on it. - Compared to the cryogenic full containment storage tank in the prior art, the cryogenic full containment storage tank in this embodiment is equipped with a
material extraction device 6, which is used as a supplementary discharge device after thesubmersible pump 5 is pumped to the minimum liquid level L1 and shuts down, so as to reduce the ineffective volume of the cryogenic full containment storage tank. It is worth mentioning that thematerial extraction device 6 involved in the present disclosure can not only extract the low liquid level material (that is, the low-temperature medium below the minimum operable liquid level L1 of the submersible pump 5), but also operate in the liquid level range where thesubmersible pump 5 in thepump column 4 can function. Therefore, in some cases, it may also be used as a backup facility with a small flow output other than thesubmersible pump 5. Thematerial extraction device 6 will be described in detail below with reference toFIG. 2 , and other specific structures including theinner tank 1, theouter tank 2, theoperation platform 3, thepump column 4, and thesubmersible pump 5 can be referred to the structure of the related technology of the full-containment tank, which will not be described in detail herein. - Referring to
FIGS. 1-2 , thematerial extraction device 6 of this embodiment includes amaterial circulation tank 61, afirst Venturi mixer 62, aninlet pipeline 63, anoutlet pipeline 64 and acryopump 65. Further, acontrol valve 66 is further provided on theinlet pipeline 63. - The
material circulation tank 61 in this embodiment is a horizontal low-temperature tank, which is arranged on theoperation platform 3. An inside of thematerial circulation tank 61 is configured to contain the low-temperature medium, and an outside of thematerial circulation tank 61 may be wrapped with cold insulating material. - Taking the view direction of
FIG. 2 as a reference, anoverflow weir 611 is arranged in thematerial circulation tank 61, and theoverflow weir 611 divides the internal space of thematerial circulation tank 61 into two parts. When the low-temperature medium in the overflow weir 611 (i.e., a left side of theoverflow weir 611 in the figure) exceeds a height of theoverflow weir 611, the low-temperature medium overflow outside the overflow weir 611 (i.e., a right side of theoverflow weir 611 in the figure). The space on the left side of theoverflow weir 611 should meet the circulating volume requirements for medium extraction of the low-temperature medium, and the height of theoverflow weir 611 should meet the requirements of the minimum operable liquid level of thecryopump 65. On this basis, the height of theoverflow weir 611 is set according to the practice situation. - An
outlet 6101 is provided at a bottom of a left end of thematerial circulation tank 61, and theoutlet 6101 is communicated with the space enclosed by theoverflow weir 611, which is configured to output the low-temperature medium during medium extraction. - A
medium output port 6103 is further provided at a bottom of a right end of thematerial circulation tank 61, and themedium output port 6103 is communicated with the space outside theoverflow weir 611 in thematerial circulation tank 61, which is configured to output the low-temperature medium to the outside. - An
inlet 6102 is provided on a left side of a top of thematerial circulation tank 61, which is configured to receive the low-temperature medium. - The
first Venturi mixer 62 is placed horizontally on a bottom plate of theinner tank 1 so as to have a low installation height. Thefirst Venturi mixer 62 is a liquid-liquid mixer, which mainly includes aconstriction section 621, athroat section 622 and adiffusion section 623 connected in sequence. In this embodiment, thefirst Venturi mixer 62 is further provided with asuction cavity 624. - Each one of the
constriction section 621 and thediffusion section 623 is a hollow structure with gradient cross-section, a large-end opening of theconstriction section 621 configured as aninlet 6201 of thefirst Venturi mixer 62, and a large-end opening of thediffusion section 623 configured as anoutlet 6203 of thefirst Venturi mixer 62. One end of thethroat section 622 is connected to a small-end opening of theconstriction section 621, and the other end thereof is aligned with a small-end opening of thediffusion section 623. - The
suction cavity 624 is circumferentially arranged on a periphery of thethroat section 622, forming a dual cavity structure at thethroat section 622. Two ends of thesuction cavity 624 are respectively connected to an outer wall of theconstriction section 621 and an outer wall of thediffusion section 623. An outer peripheral wall of thesuction cavity 624 is provided with a plurality ofsuction holes 6202, and thesesuction holes 6202 are communicated with an interior of theinner tank 1, so that the low-temperature medium in theinner tank 1 can be sucked into thesuction cavity 624. An annular cavity is formed between thesuction cavity 624 and thethroat section 622, and thesuction cavity 624 is communicated with an interior of thethroat section 622, so the low-temperature medium in thesuction cavity 624 can further enter thethroat section 622. - The
inlet pipeline 63 extends through the top of theouter tank 2, and connects theinlet 6201 of thefirst Venturi mixer 62 to theoutlet 6101 of thematerial circulation tank 61, so as to guide the low-temperature medium in thematerial circulation tank 61 into thefirst Venturi mixer 62 for extraction. - The
outlet pipeline 64 also extends through the top of theouter tank 2, and connects theinlet 6102 of thematerial circulation tank 61 to theoutlet 6203 of thefirst Venturi mixer 62, so as to guide the low-temperature medium in thefirst Venturi mixer 62 into thematerial circulation tank 61. - The
cryopump 65 is arranged on theoperation platform 3 and is connected to theinlet pipeline 63 to provide power for the flow of the low-temperature medium. Thecryopump 65 is a non-submerged pump, that is, it is not required to be immersed in the low-temperature medium, and it may be a non-submerged pump with any structure. - The
control valve 66 is arranged on theinlet pipeline 63, so that it can not only control the opening and closing of theinlet pipeline 63, but also adjust a flow rate of the low-temperature medium in theinlet pipeline 63. Thecontrol valve 66 is located downstream of thecryopump 65, but outside theouter tank 2. - The above-mentioned
material circulation tank 61, thefirst Venturi mixer 62, theinlet pipeline 63, theextraction pipeline 64, thecryopump 65 and thecontrol valve 66 are all required to be able to withstand the temperature of the extracted low-temperature medium, so they are made of low-temperature materials capable of withstanding the corresponding temperature. - Referring to
FIGS. 2-3 , the working principle of thematerial extraction device 6 is as follows. While extracting medium, the low-temperature medium in thematerial circulation tank 61 is driven by the power of thecryopump 65 and enters thefirst Venturi mixer 62 through theinlet pipeline 63. For ease of understanding, the low-temperature medium guided into thefirst Venturi mixer 62 from thematerial circulation tank 61 is referred to as initial low-temperature medium F0. According to the Bernoulli's (energy conservation) principle and the momentum transfer principle (momentum conservation), after the initial low-temperature medium F0 enters thefirst Venturi mixer 62, in the process of flowing from theconstriction section 621 to thethroat section 622, due to a decrease of the flow cross-sectional area, the flow speed increases, and the pressure decreases, resulting in an entrainment effect of local low pressure and high-speed flow at thethroat section 622, so that the low-temperature medium Fi in theinner tank 1 enters thefirst Venturi mixer 62 through the suction holes 6202 under the action of the pressure difference. The sucked low-temperature medium Fi is mixed with the initial low-temperature medium F0. Due to an increase of the flow cross-section area, the flow speed reduces, and the pressure increases, the mixed low-temperature medium Fm in thediffusion section 623 enters thematerial circulation tank 61 through the lead-outlet pipeline 64. In this embodiment, thesuction cavity 624 is further provided on a periphery of thethroat section 622 of thefirst Venturi mixer 62, and the low-temperature medium in theinner tank 1 is first sucked into thesuction cavity 624, and then enters thethroat section 622 for mixing, so that the momentum of the initial low-temperature medium F0 can be more effectively utilized, and the mixed low-temperature medium can flow back to thematerial circulation tank 61 more smoothly. - The flow rate of the low-temperature medium reaching the
material circulation tank 61 is greater than the flow rate of the initial low-temperature medium initially pumped into thefirst Venturi mixer 62 from thematerial circulation tank 61, and the excess part is the low-temperature medium extracted from theinner tank 1. After the above-mentioned continuous circulation process, the low-temperature medium in theinner tank 1 can be continuously extracted into thematerial circulation tank 61. - The low-temperature medium located in the
overflow weir 611 in thematerial circulation tank 61 is used to maintain the medium extraction operation. When the low-temperature medium in thematerial circulation tank 61 exceeds theoverflow weir 611, the low-temperature medium beyond the height of theoverflow weir 611 can be transported outward through themedium output port 6103. - Referring to
FIGS. 4-5 , in another embodiment of the cryogenic full containment storage tank, thematerial extraction device 6a is further provided with a pressurizingunit 67 on the basis of the foregoing embodiment, and the pressurizingunit 67 is provided on theoutlet pipeline 64, and the pressurizingunit 67 is configured to increase the power of the mixed low-temperature medium to flow to thematerial circulation tank 61a, so that the low-temperature medium can flow back to thematerial circulation tank 61a more smoothly. It is suitable for situations with a larger pumping height, such as a cryogenic full containment storage tank with a larger height. In this embodiment, the pressurizingunit 67 includes asecond Venturi mixer 671, a pressurizinginlet pipeline 672 and a pressurizingcontrol valve 673. - A composition structure of the
second Venturi mixer 671 may be the same as that of thefirst Venturi mixer 62. Asuction hole 6712 and anoutlet 6713 of thesecond Venturi mixer 671 are connected in series to theoutlet pipeline 64a. Specifically, theoutlet pipeline 64a is divided into afirst outlet section 641a and asecond outlet section 642a, and thefirst outlet section 641a connects theoutlet 6203 of thefirst Venturi mixer 62 to thesuction hole 6712 of thesecond Venturi mixer 671, and thesecond outlet section 642a connects theoutlet 6713 of thesecond Venturi mixer 671 to theinlet 6102a of thematerial circulation tank 61a. - The pressurizing
inlet pipeline 672 communicates theinlet 6711 of thesecond Venturi mixer 671 with theoutlet 6101a of thematerial circulation tank 61a, so as to guide a certain amount of initial low-temperature medium from thematerial circulation tank 61a into thesecond Venturi mixer 671. The initial low-temperature medium is further mixed with the mixed low-temperature medium from thefirst Venturi mixer 62 in thesecond Venturi mixer 671 to increase the pressure, so that the low-temperature medium has greater power to return to thematerial circulation tank 61a from thesecond outlet section 642a. - The pressurizing
control valve 673 is arranged on the pressurizinginlet pipeline 672. On the one hand, it controls the opening and closing of the pressurizinginlet pipeline 672 , and on the other hand, it also regulates a flow rate in the pressurizinginlet pipeline 672. - Similar to the previous embodiment, the
second Venturi mixer 671, the pressurizinginlet pipeline 672 and the pressurizingcontrol valve 673 are also required to be able to withstand the temperature of the extracted low-temperature medium, so they are made of low-temperature materials capable of withstanding the corresponding temperature. - In this embodiment, the
second Venturi mixer 671 is configured to increase the refluxing power of the low-temperature medium, and forms a two-stage series extraction process. In other embodiments, if the extraction height is higher and the return power is insufficient, more Venturi mixers may be connected in series to theoutlet pipeline 64/64a to form a multi-stage series extraction process. The connection method of multi-stage series extraction may be deduced by analogy. - Compared to the previous embodiment, another difference of this embodiment is that the
material circulation tank 61a is a vertical storage tank. Theinlet 6102a of thematerial circulation tank 61a is located at the top, and theoutlet 6101a of thematerial circulation tank 61a is located on the side wall close to the bottom. There is nooverflow weir 611 in thematerial circulation tank 61a, but anoverflow port 6104a is provided on the side wall of thematerial circulation tank 61a. The height of theoverflow port 6104a is higher than theoutlet 6101a of thematerial circulation tank 61a, and is higher than the liquid level required for medium extraction. Themedium outlet port 6103a is extended out from and communicated with theoverflow port 6104a. - The structure of the vertical
material circulation tank 61a is also applicable to thematerial extraction device 6 in the previous embodiment. - In the above two embodiments, the
material circulation tank 61/61a adopts the structure of theoverflow weir 611 and theoverflow port 6104a to form a liquid level control mechanism, so as to control the opening and closing of themedium output port 6103/6103a when the preset liquid level is reached. In other not-shown embodiments, the liquid level control mechanism may further include an electrically connected liquid level gauge and a valve, the liquid level gauge is configured to detect the liquid level in the material circulation tank, and the valve is correspondingly arranged at the medium output port. - Referring to
FIG. 6 , theVenturi mixers 62/671 in the above embodiments can also be replaced with a structure shown inFIG. 6 . In the structure shown inFIG. 6 , theVenturi mixer 62b is not equipped with thesuction cavity 624, but a plurality ofsuction holes 6202b are opened on the outer peripheral wall of thethroat section 622b, and eachsuction hole 6202b is further provided with asuction pipe 625b correspondingly. When the initial low-temperature medium F0 is guided into theconstriction section 621 of theVenturi mixer 62b, under the action of the pressure difference, the low-temperature medium Fi in theinner tank 1 can be guided into thethroat section 622b through thesuction pipes 625b, and is mixed with the initial low-temperature medium Fi, and the mixed low-temperature medium Fm is guided to the next process. - In some other not shown embodiments, the
suction pipes 625b may also be removed, and the low-temperature medium Fi in theinner tank 1 is directly sucked through thesuction hole 6202b on the outer peripheral wall of thethroat section 622b. In addition, for the structure of thefirst Venturi mixer 62 in the above-mentioned embodiment, a suction pipe may also be added at thesuction hole 6202 of thesuction cavity 624. Similarly, a suction pipe may also be added at thesuction hole 6712 of thesecond Venturi mixer 671. - Based on the above description, when the cryogenic full containment storage tank in each embodiment of the present disclosure is in normal operation, the low-temperature medium is outputted through the
pump column 4 under the power of thesubmersible pump 5. According to the minimum operable liquid level required to start and maintain the operation of thesubmersible pump 5, thesubmersible pump 5 can reduce the liquid level in the cryogenic full containment storage tank to the minimum position L1 shown inFIG. 1 andFIG. 3 . According to the requirements of the generalsubmersible pump 5 in the prior art, L1 is roughly about 1.2 m. When the liquid level in the cryogenic full containment storage tank drops to L1, thesubmersible pump 5 is stopped. If it is necessary to further extract the low-temperature medium from theinner tank 1, thematerial extraction device 6/6a is adopted to carry out the extraction, and thematerial extraction device 6/6a continuously extracts the low-temperature medium at the bottom of theinner tank 1 according to the working principle described above, until the liquid level drops to thefirst Venturi mixer 62, and the liquid level in this circumstance is located at L2. The L2 may be approximately 0.2 m to 0.3 m. Compared to the 1.2 m of L1, the liquid level in theinner tank 1 may be reduced by about 1m, which significantly reduces the ineffective volume of the cryogenic full containment storage tank, and improves the volume utilization rate of the cryogenic full containment storage tank. - In this cryogenic full containment storage tank, the power part and the control part of the
material extraction device 6/6a are arranged outside theouter tank 2. Except that theVenturi mixer 62/671/62b and the pipeline part need to be immersed in the low-temperature medium, no other equipment or cables are immersed in the low-temperature medium, and the components in the tank can achieve maintenance-free operation throughout the life of the tank. It is worth mentioning that when the liquid level of the cryogenic full containment storage tank is higher than L1, thematerial circulation tank 61/61a of thematerial extraction device 6/6a may not store the low-temperature medium. When it is required to extract the low liquid level medium, thematerial circulation tank 61/61a may be filled with a certain amount of low-temperature medium as the initial power medium. - Although the present disclosure has been described with reference to several exemplary embodiments, it should be understood that the terminology used is used for description and illustration, and not for limitation. Since the present disclosure can be embodied in many forms without departing from the spirit or essence of the disclosure, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but are to be construed broadly within the spirit and scope defined by the appended claims. Therefore, all changes and modifications that come within the scope of the claims or their equivalents should be covered by the appended claims.
Claims (11)
- A cryogenic full containment storage tank having a low liquid level material extraction device, comprising:an inner tank;an outer tank surrounding a periphery of the inner tank;an operation platform arranged on a top of the outer tank; anda material extraction device capable of extracting low liquid level material, comprising:a material circulation tank arranged on the operation platform, which is configured to contain low-temperature medium;a first Venturi mixer arranged at a bottom of the inner tank, wherein two ends of the first Venturi mixer are respectively an inlet and an outlet, and an outer periphery of the first Venturi mixer is provided with a suction hole;an inlet pipeline connected an outlet of the material circulation tank to the inlet of the first Venturi mixer;an outlet pipeline connected the outlet of the first Venturi mixer to an inlet of the material circulation tank; anda cryopump, arranged on the operation platform, and connected to the inlet pipeline;wherein while performing a medium extraction, the low-temperature medium in the material circulation tank enters the first Venturi mixer through the cryopump and the inlet pipeline, so that the low-temperature medium in the inner tank is capable of entering the first Venturi mixer through the suction hole under an action of a pressure difference, and entering the material circulation tank through the outlet pipeline after mixing.
- The cryogenic full containment storage tank according to claim 1, wherein the first Venturi mixer comprises a constriction section, a throat section and a diffusion section connected in sequence, wherein a large-end opening of the constriction section is configured as the inlet of the first Venturi mixer, and is connected to the inlet pipeline, wherein a large-end opening of the diffusion section is configured as the outlet of the first Venturi mixer, and is connected to the outlet pipeline, wherein two ends of the throat section are respectively connected to a small-end opening of the constriction section and a small-end opening of the diffusion section, wherein the suction hole is opened corresponding to an outer periphery of the throat section, and is communicated with an interior of the throat section, and wherein the first Venturi mixer is placed horizontally in the inner tank.
- The cryogenic full containment storage tank according to claim 2, wherein the first Venturi mixer further comprises a suction cavity arranged around the outer periphery of the throat section and communicated with the interior of the throat section, wherein two ends of the suction cavity are respectively connected to an outer wall of the constriction section and an outer wall of the diffusion section, wherein the suction hole is opened on an outer peripheral wall of the suction cavity.
- The cryogenic full containment storage tank according to claim 2, wherein the suction hole of the first Venturi mixer is opened on an outer peripheral wall of the throat section,
wherein the first Venturi mixer further comprises a suction pipe correspondingly arranged at the suction hole, and the suction pipe is communicated with an interior of the inner tank. - The cryogenic full containment storage tank according to claim 1, wherein the material circulation tank is further provided with a medium output port for outputting the low-temperature medium to the outside, and a liquid level control mechanism is provided to control an opening and closing of the medium output port when a preset liquid level is reached, and the preset liquid level is higher than a liquid level required for an operation of the cryopump during medium extraction.
- The cryogenic full containment storage tank according to claim 5, wherein the liquid level control mechanism is an overflow weir arranged in the material circulation tank, wherein an outlet of the material circulation tank is communicated with an inner space of the overflow weir, and the medium output port is communicated with an outer space of the overflow weir.
- The cryogenic full containment storage tank according to claim 5, wherein the liquid level control mechanism is an overflow port arranged on a side wall of the material circulation tank, wherein a height of the overflow port is higher than the outlet of the material circulation tank, and the overflow port is communicated with the medium output port.
- The cryogenic full containment storage tank according to claim 5, wherein the liquid level control mechanism comprises an electrically connected liquid level gauge and a valve, wherein the liquid level gauge is configured to detect a liquid level in the material circulation tank, and the valve is correspondingly arranged at the medium output port.
- The cryogenic full containment storage tank according to claim 1, wherein the inlet pipeline is provided with a control valve to adjust a flow rate in the inlet pipeline, the control valve is located outside the outer tank, and the cryopump is located between the material circulation tank and the control valve.
- The cryogenic full containment storage tank according to claim 1, wherein the material extraction device further comprises a pressurizing unit, which is arranged on the outlet pipeline to increase a power for the low-temperature medium to flow to the material circulation tank.
- The cryogenic full containment storage tank according to claim 10, wherein the pressurizing unit comprises:a second Venturi mixer, a suction hole and an outlet of which are connected in series to the outlet pipeline;a pressurizing inlet pipeline, connected an inlet of the second Venturi mixer to the outlet of the material circulation tank; anda pressurizing control valve, arranged on the pressurizing inlet pipeline to adjust a flow rate in the pressurizing inlet pipeline.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911198981.4A CN112879795A (en) | 2019-11-29 | 2019-11-29 | Low-temperature full-capacity tank with low-liquid-level material extraction device |
PCT/CN2020/132342 WO2021104469A1 (en) | 2019-11-29 | 2020-11-27 | Low-temperature full containment tank having low-liquid-level material extraction device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4047259A1 true EP4047259A1 (en) | 2022-08-24 |
EP4047259A4 EP4047259A4 (en) | 2023-09-06 |
Family
ID=76038412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20891908.4A Pending EP4047259A4 (en) | 2019-11-29 | 2020-11-27 | Low-temperature full containment tank having low-liquid-level material extraction device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4047259A4 (en) |
CN (1) | CN112879795A (en) |
WO (1) | WO2021104469A1 (en) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2109525A1 (en) * | 1971-03-01 | 1972-09-07 | Liquid Gas Anlagen Union | Method and device for draining liquid containers, in particular on liquid gas tankers |
DE102004043080A1 (en) * | 2004-09-07 | 2006-03-09 | Bayerische Motoren Werke Ag | Cryotank for use in internal combustion engine, has gas return line discharging into tank and whose return controlled gas is forwarded via nozzle and cooperates with extraction line such that condensed gas is supplied into supply pipe |
FR2876981B1 (en) * | 2004-10-27 | 2006-12-15 | Gaz Transp Et Technigaz Soc Pa | DEVICE FOR SUPPLYING FUEL TO AN ENERGY PRODUCTION PLANT IN A SHIP |
JP2007024166A (en) * | 2005-07-15 | 2007-02-01 | Taiyo Nippon Sanso Corp | Low-temperature liquefied gas supply device |
JP2007292180A (en) * | 2006-04-25 | 2007-11-08 | Chiyoda Corp | Cold insulation circulation system of liquefied gas facility |
NL2009328C2 (en) * | 2012-08-16 | 2014-02-18 | Vialle Alternative Fuel Systems Bv | Assembly for buffering a liquefied petroleum gas in a liquefied petroleum gas storage and storage bag therefore. |
CN203248988U (en) * | 2013-04-22 | 2013-10-23 | 中国海洋石油总公司 | Vapor zero discharge treatment system of LNG receiving station |
CN204384858U (en) * | 2014-12-24 | 2015-06-10 | 赤峰盛森硅业科技发展有限公司 | Liquid extracting and feedway |
CN207716090U (en) * | 2017-07-31 | 2018-08-10 | 新兴能源装备股份有限公司 | A kind of low-temperature storage tank is quickly from pressure piping |
CN208859947U (en) * | 2018-10-10 | 2019-05-14 | 乳山市创新新能源科技有限公司 | A kind of LNG cold energy extraction direct refrigeration system |
CN109928497A (en) * | 2019-04-15 | 2019-06-25 | 湖南中拓环境工程有限公司 | A kind of compound anoxic pond of modified form up-flow |
CN211083611U (en) * | 2019-11-29 | 2020-07-24 | 南京扬子石油化工设计工程有限责任公司 | Low-temperature full-capacity tank with low-liquid-level material extraction device |
-
2019
- 2019-11-29 CN CN201911198981.4A patent/CN112879795A/en active Pending
-
2020
- 2020-11-27 WO PCT/CN2020/132342 patent/WO2021104469A1/en unknown
- 2020-11-27 EP EP20891908.4A patent/EP4047259A4/en active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2021104469A1 (en) | 2021-06-03 |
EP4047259A4 (en) | 2023-09-06 |
CN112879795A (en) | 2021-06-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100488838C (en) | Device for supplying fuel to an energy production installation of a ship | |
CN104006295B (en) | A kind of equipment of the displaced type pressure carrying method of liquefied gas at low temp | |
US9638373B2 (en) | Energy efficient vertical cryogenic tank | |
CN211574758U (en) | Low-temperature full-capacity tank for realizing low-liquid-level material extraction function by utilizing pump column | |
EP4047259A1 (en) | Low-temperature full containment tank having low-liquid-level material extraction device | |
CN211083611U (en) | Low-temperature full-capacity tank with low-liquid-level material extraction device | |
CN203743823U (en) | Low-evaporation-rate constant-temperature low-temperature liquid storage tank | |
CN204284911U (en) | Cryogenic liquid integral type Storing and conveying metering equipment | |
CN102913753A (en) | Storage and gasification project output system of LNG (Liquefied Natural Gas) receiving terminal as well as method | |
US20220373138A1 (en) | Cryogenic full containment storage tank for realizing low-liquid-level material extraction function by using pump column | |
CN202868303U (en) | Storage and gasification engineering output system of liquefied natural gas (LNG) accepting station | |
CN206247681U (en) | A kind of drilling mud refrigerating plant | |
JPH03181699A (en) | Method for maintaining pressure at value lower than given limit during filling of storage facility for storing fluid having liquid phase and gas phase and recondensing facility thereof | |
CN108571651A (en) | A kind of liquefied ammonia recovery system and its recovery method | |
CN209585161U (en) | A kind of ladder water system | |
CN108149751A (en) | A kind of depth frozen soil extremely cold area pipe well defroster | |
CN207959358U (en) | A kind of depth frozen soil extremely cold area pipe well defroster | |
CN207633505U (en) | Sewage transport system | |
US20160223140A1 (en) | A Tank-Pump Integrated Structure for LNG Filling Station | |
CN110685923A (en) | Composite strong self-suction centrifugal pump set | |
CN205504452U (en) | Low -temperature ethylene prestressed concrete holds jar entirely and stores outside pale of civilization defeated system of existing gas | |
KR20170022410A (en) | Pump tower | |
US4204813A (en) | LNG Pump anti-slam device | |
CN218523404U (en) | Liquid ammonia gasification equipment | |
CN210462470U (en) | Propylene storage tank water injection system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20220520 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230530 |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20230807 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F17C 13/04 20060101ALI20230801BHEP Ipc: F17C 9/00 20060101AFI20230801BHEP |