CN115538993A - Method for arranging broken and mixed stone block collecting net vertically rising to sea level in methane generating device of seabed surface exposed combustible ice - Google Patents

Method for arranging broken and mixed stone block collecting net vertically rising to sea level in methane generating device of seabed surface exposed combustible ice Download PDF

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CN115538993A
CN115538993A CN202111614092.9A CN202111614092A CN115538993A CN 115538993 A CN115538993 A CN 115538993A CN 202111614092 A CN202111614092 A CN 202111614092A CN 115538993 A CN115538993 A CN 115538993A
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combustible ice
collecting net
submersible pump
sea level
fragments
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梁嘉麟
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China Jiliang University
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/01Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0099Equipment or details not covered by groups E21B15/00 - E21B40/00 specially adapted for drilling for or production of natural hydrate or clathrate gas reservoirs; Drilling through or monitoring of formations containing gas hydrates or clathrates
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

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  • Life Sciences & Earth Sciences (AREA)
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  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
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Abstract

A method for arranging a broken miscellaneous stone block collecting net capable of vertically ascending to the sea level in a methane generation generating device for mining a combustible ice deposit exposed on the surface of the sea bottom comprises the following steps: the aggregate collection net (W) arranged in the rigid pipe (4) between the deep submersible pump (B) and the feed opening (7) must be able to ensure that: all combustible ice fragments (6) which roll down from the feed inlet (7) are received by the bottom of the bag and are temporarily stored on the bag, and after all combustible ice fragments are separated into methane and water, impurities which are left on the crushed impurity fragment collecting net (W) and mainly comprise crushed impurity fragments can be completely netted and lifted to a position above the horizontal plane by a special elevator, and then the impurities are discharged.

Description

Method for arranging broken and mixed stone block collecting net vertically rising to sea level in methane generating device of seabed surface exposed combustible ice
Technical Field
The invention relates to a method for arranging a broken stone block collecting net which vertically rises to the sea level in a methane generating device of combustible ice exposed on the surface of the sea bottom.
Background
With the huge consumption of resources, mankind has faced a huge crisis of resources in particular in the beginning of the 21 st century, and as for the countries with energy consumption, the crude oil import has exceeded one hundred million tons in China, the output of domestic onshore oil and gas fields is reluctantly kept stable, and experts estimate that the vast majority of breakthroughs can hardly be made in a short time. Natural gas hydrates, which are readily combustible ice, are gaining favor as an alternative energy source in countries throughout the world, particularly in developed countries.
Taking gas hydrates formed at the sea floor as an example: at the ambient temperature of 1-20 ℃, as long as the water depth is 300 meters, namely 30 atmospheric pressures are reached, natural gas hydrate, namely a combustible ice mineral deposit, can be formed; and the environment being above the temperature or/and the environment being below the pressure, the natural gas hydrate is encouraged to decompose into methane and water.
The storage amount of combustible ice mineral deposits in the world is 2 times of the storage amount of combustible minerals such as petroleum, and the combustible ice mineral deposits can be used by global population for 1000 years; theoretical calculation, 1m 3 Can release 164m under standard conditions 3 Methane gas, while natural gas hydrate combustion produces only CO 2 And H 2 O, which is an inexhaustible green clean energy.
The south China sea contains abundant combustible ice deposits on the sea bottom, however, the combustible ice deposits are not mined out like other sea areas in the world, and the main reason is that the mining cost of the combustible ice is high, about $ 200/m 3
Many "laboratory" methods have been developed, but these methods are in the exploration phase and are difficult to enter into practical, scalable commercial exploitation phases.
Disclosure of Invention
The purpose of the invention is: a method for arranging a net for collecting crushed aggregate which can rise vertically to the sea level,
the key point of the invention is that:
mainly provides a technical scheme which is implemented for normally producing methane and can solve the problem of how to realize the normal methane production under the environment of extremely high water body pressure difference caused at the bottom of water.
The invention has the characteristics that:
the invention can greatly reduce the water volume with extremely large volume necessary for pressurizing through the water, thereby creating the condition for promoting pressure balance by rapid pressurization, namely creating the condition for rapidly opening the sealing cover in the underwater equipment.
Drawings
Fig. 1 illustrates the structural principle of a methanogenesis generation apparatus for fragments of a submarine combustible ice deposit.
1: an exhaust duct; 2: a water drainage pipeline; 3: a sealed methane collecting and distributing chamber (a temporary working chamber for people to enter with an oxygen cylinder); 4: a rigid conduit; 5: the sealing cover can be turned up and down; 6: mining the obtained combustible ice fragments; 7: a combustible ice fragment feed inlet; 8: a counter weight foundation with an inverted cone-shaped bottom; 9: a water supply pressure-increasing valve (provided to open the sealing cover for pressurization); d: a deep water conveyor belt; b: a deep submersible pump; r: a microwave heater; w: a receiving net which can vertically lift and intercept other broken miscellaneous stone blocks; g: a sealed cabin turning mechanism of the bottom machine room; dotted arrow
Figure BSA0000262046170000021
The flow direction of methane (gas) is indicated; solid arrow head
Figure BSA0000262046170000022
The flow direction of the water is indicated.
Detailed Description
In order to achieve the above object of the present invention, the following technical solutions are proposed:
the main structure of the invention is characterized in that:
the methane generating device is characterized by at least comprising a body of a methane generating device, wherein a rigid pipeline 4 is inserted from the sea level and positioned on a seabed rock stratum, the outer bottom surface of the body is provided with an inverted cone-shaped counterweight foundation 8 which can be matched with the position of a joint part of the seabed rock stratum, the lower part in the body is provided with a deep submersible pump B, a broken miscellaneous stone block collecting net W which can vertically rise to the sea level is arranged between the upper part of the deep submersible pump B and a feed inlet 7, a microwave heater R is arranged above the feed inlet 7, and a turnover sealed cabin G mechanism of a bottom machine room is arranged above the microwave heater R;
the feed port 7 is provided with a sealing cover 5 which can be opened or closed by remote control turning:
when the sealing cover 5 is opened, the feed inlet 7 can be jointed with the end part of the externally connected underwater conveyer belt D in a non-connection mode, and combustible ice fragments 6 conveyed by the underwater conveyer belt D are accurately received;
an internal remote control water supply pressure-increasing valve 9 is arranged below the water surface at the outer side of the rigid pipeline 4, and the sealing cover 5 can be opened only when the pressure of the internal water supply is increased and is consistent with the pressure of the water body at the outer side;
a drainage pipeline 2 is arranged above the deep submersible pump B and used for externally draining the accumulated water which can be automatically drained at any time through the deep submersible pump B;
(II) the vertical lifting and descending related method setting of the broken impurity stone collecting net W in the methane generation generating device for mining the exposed combustible ice mineral on the surface of the seabed is as follows:
according to the known knowledge, the following special setting requirements can be easily deduced and proposed after being combined with the prior art:
the debris collection screen W arranged in the rigid pipe 4 between the deep submersible pump B and the feed opening 7 must be able to ensure: all combustible ice fragments 6 which roll down from the feed inlet 7 are received by the bottom of the bag and are temporarily stored at the upper part of the bag, after all combustible ice fragments are separated into methane and water, sundries which are left on the crushed stone collection net W and mainly comprise crushed stone blocks can be completely netted and lifted to a part above the horizontal plane by a special elevator, and then the sundries are discharged outwards.

Claims (1)

1. A method for arranging a broken miscellaneous stone block collecting net which can vertically rise to the sea level in a methane generation generating device for mining a bared combustible ice mineral on the surface of the sea floor,
it is characterized in that structurally comprises:
the underwater deep submersible pump is characterized by comprising a machine body which is formed by at least one rigid pipeline (4) inserted from the sea level and positioned on a seabed rock stratum, wherein a reverse-cone-shaped counterweight foundation (8) which can be matched with the joint part of the seabed rock stratum is arranged on the outer bottom surface of the machine body, and a deep submersible pump (B) is positioned at the inner lower part of the machine body; a broken miscellaneous stone block collecting net (W) capable of vertically ascending to the sea level is arranged between the upper part of the deep submersible pump (B) and the feeding port (7), a microwave heater (R) is arranged above the feeding port (7), and a turning sealing hatch cover mechanism (G) of a bottom machine room is arranged above the microwave heater (R);
the feed inlet (7) is provided with a sealing cover (5) which can be opened or closed by remote control turning:
when the sealing cover (5) is opened, the feed inlet (7) can be in non-connection type position connection with the end part of the externally connected underwater conveyor belt (D) to accurately receive the combustible ice fragments (6) conveyed by the underwater conveyor belt (D);
an internal remote control water supply pressure boosting valve (9) is arranged below the water surface at the outer side of the rigid pipeline (4), and the sealing cover (5) can be opened only when the pressure of the internal water supply is boosted and is consistent with the pressure of the water body at the outer side;
a drainage pipeline (2) is arranged above the deep submersible pump (B) and is used for externally draining the accumulated water which can be automatically drained at any time through the deep submersible pump (B);
the setting method related to the vertical lifting of the aggregate collecting net (W) has the following requirements:
the aggregate collection net (W) arranged in the rigid pipe (4) between the deep submersible pump (B) and the feed opening (7) must be able to ensure that: all combustible ice fragments (6) which roll down from the feed inlet (7) are received by the bottom of the bag and are temporarily stored on the bag, and after all combustible ice fragments are separated into methane and water, impurities which are left on the crushed impurity fragment collecting net (W) and mainly comprise crushed impurity fragments can be completely screened and lifted to a position above the horizontal plane by a special elevator, and then the impurities are discharged outwards.
CN202111614092.9A 2017-03-30 2017-03-30 Method for arranging broken and mixed stone block collecting net vertically rising to sea level in methane generating device of seabed surface exposed combustible ice Pending CN115538993A (en)

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CN201710230727.2A CN108661605B (en) 2017-03-30 2017-03-30 Improved A-type generating device for generating methane for fragments of seabed combustible ice mineral reserves
CN202111614092.9A CN115538993A (en) 2017-03-30 2017-03-30 Method for arranging broken and mixed stone block collecting net vertically rising to sea level in methane generating device of seabed surface exposed combustible ice

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CN202111418260.7A Pending CN114016975A (en) 2017-03-30 2017-03-30 Wind power generation method related to exploiting seabed surface exposed combustible ice mineral deposit methane generation device
CN202111607510.1A Pending CN115538990A (en) 2017-03-30 2017-03-30 Wind power generation method related to exploiting seabed surface exposed combustible ice mineral deposit methane generation device
CN202111607636.9A Pending CN115538991A (en) 2017-03-30 2017-03-30 Installation and construction method for exploiting seabed surface exposed combustible ice mineral methane generation device
CN202111614091.4A Pending CN115538992A (en) 2017-03-30 2017-03-30 Method for quickly opening sealing cover in methane generating device for exploiting exposed combustible ice on seabed surface under environment of extremely high pressure difference
CN202111614094.8A Pending CN115538994A (en) 2017-03-30 2017-03-30 Technical requirements of deep submersible pump necessarily arranged at bottom of methane generating device for exploiting combustible ice deposit exposed on seabed surface
CN202111614092.9A Pending CN115538993A (en) 2017-03-30 2017-03-30 Method for arranging broken and mixed stone block collecting net vertically rising to sea level in methane generating device of seabed surface exposed combustible ice
CN201710230727.2A Expired - Fee Related CN108661605B (en) 2017-03-30 2017-03-30 Improved A-type generating device for generating methane for fragments of seabed combustible ice mineral reserves
CN202111418259.4A Pending CN114016974A (en) 2017-03-30 2017-03-30 Installation and construction method for exploiting seabed surface exposed combustible ice mineral methane generation device
CN202111607509.9A Pending CN115538989A (en) 2017-03-30 2017-03-30 Methane generation device for exploiting seabed surface exposed combustible ice mineral reserves

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CN202111418260.7A Pending CN114016975A (en) 2017-03-30 2017-03-30 Wind power generation method related to exploiting seabed surface exposed combustible ice mineral deposit methane generation device
CN202111607510.1A Pending CN115538990A (en) 2017-03-30 2017-03-30 Wind power generation method related to exploiting seabed surface exposed combustible ice mineral deposit methane generation device
CN202111607636.9A Pending CN115538991A (en) 2017-03-30 2017-03-30 Installation and construction method for exploiting seabed surface exposed combustible ice mineral methane generation device
CN202111614091.4A Pending CN115538992A (en) 2017-03-30 2017-03-30 Method for quickly opening sealing cover in methane generating device for exploiting exposed combustible ice on seabed surface under environment of extremely high pressure difference
CN202111614094.8A Pending CN115538994A (en) 2017-03-30 2017-03-30 Technical requirements of deep submersible pump necessarily arranged at bottom of methane generating device for exploiting combustible ice deposit exposed on seabed surface

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CN202111418259.4A Pending CN114016974A (en) 2017-03-30 2017-03-30 Installation and construction method for exploiting seabed surface exposed combustible ice mineral methane generation device
CN202111607509.9A Pending CN115538989A (en) 2017-03-30 2017-03-30 Methane generation device for exploiting seabed surface exposed combustible ice mineral reserves

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CN112127850B (en) * 2019-06-24 2021-12-17 南京延长反应技术研究院有限公司 Green process for exploiting combustible ice

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CN108661605A (en) 2018-10-16
CN114016974A (en) 2022-02-08
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CN108661605B (en) 2022-01-18
CN115538990A (en) 2022-12-30

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