CN110630269A - Natural gas collection system suitable for seabed mud volcano - Google Patents
Natural gas collection system suitable for seabed mud volcano Download PDFInfo
- Publication number
- CN110630269A CN110630269A CN201910969766.3A CN201910969766A CN110630269A CN 110630269 A CN110630269 A CN 110630269A CN 201910969766 A CN201910969766 A CN 201910969766A CN 110630269 A CN110630269 A CN 110630269A
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- China
- Prior art keywords
- natural gas
- unit
- collecting
- volcano
- energy supply
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- 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.)
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 103
- 239000003345 natural gas Substances 0.000 title claims abstract description 52
- CCEKAJIANROZEO-UHFFFAOYSA-N sulfluramid Chemical group CCNS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F CCEKAJIANROZEO-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 35
- 239000013049 sediment Substances 0.000 claims abstract description 18
- 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 claims abstract description 17
- 238000005086 pumping Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 24
- 238000009413 insulation Methods 0.000 claims description 12
- 238000005485 electric heating Methods 0.000 claims description 11
- 239000013535 sea water Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000020477 pH reduction Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 17
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- -1 volcano forms natural gas hydrates Chemical class 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C50/00—Obtaining minerals from underwater, not otherwise provided for
- E21C50/02—Obtaining minerals from underwater, not otherwise provided for dependent on the ship movements
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a natural gas collecting device suitable for seabed mud volcanoes, which comprises a collecting unit, a heating unit and a pumping unit, wherein the collecting unit comprises a collecting cover and a collecting blanket covering the outer wall of the collecting cover, the edge of the bottom of the collecting blanket extends outwards to form a convex part, the heating unit is arranged below the convex part of the collecting blanket, and the pumping unit is connected with the collecting cover; the acquisition unit is used for covering the submarine mud volcano to acquire natural gas; the heating unit is used for heating the natural gas hydrate in the superficial sediment so as to decompose the natural gas hydrate into water and natural gas; and the pumping unit is used for pumping the natural gas collected by the collecting unit. The invention can effectively collect the natural gas released by the mud volcano in a slow eruption state and the natural gas generated by the decomposition of the natural gas hydrate in the superficial sediment, and is beneficial to relieving the current energy crisis, seawater acidification and greenhouse effect.
Description
Technical Field
The invention relates to a deep sea resource culture and collection device, in particular to a natural gas collection device suitable for a volcano of seabed mud.
Background
The bottom sediment volcano is a special surface feature of a cold spring and a natural gas hydrate, has the characteristic of intermittent eruption, and can form the natural gas hydrate in a shallow surface sediment; in addition, a large amount of natural gas and slurry can be released during the eruption of the submarine mud volcanoes, but most of the submarine mud volcanoes slowly release the natural gas and the slurry, and the heat generated during the eruption of the submarine mud volcanoes is absorbed by seawater and cannot generate too high temperature when the submarine mud volcanoes is in the environment of deep sea bottom.
As the mud eruption part of the submarine mud volcano erupts simultaneously, the biological groups such as shells and the like around the mud eruption part simultaneously are relatively few, and at present, researches find that the organisms mainly comprise a bacterial mat in the mud volcano eruption center. Therefore, when the mud volcano is developed, the blocking and the damage to biological communities such as shells and the like can be avoided to a great extent; meanwhile, the bottom sediment volcano is a cold spring structure which continuously sprays gas, the main component of the sprayed gas is natural gas, when a large amount of natural gas enters a sea water body or even atmosphere, seawater acidification can be caused, and the greenhouse effect is intensified.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a natural gas collecting device suitable for a seabed mud volcano, which can relieve the problems of the current energy crisis, seawater acidification and greenhouse effect.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a natural gas collection system suitable for seabed mud volcano which characterized in that: the collecting device comprises a collecting unit, a heating unit and a suction unit, wherein the collecting unit comprises a collecting cover and a collecting blanket covering the outer wall of the collecting cover, the edge of the bottom of the collecting blanket extends outwards to form a convex part, the heating unit is arranged below the convex part of the collecting blanket, and the suction unit is connected with the collecting cover;
the acquisition unit is used for covering the submarine mud volcano to acquire natural gas;
the heating unit is used for heating the natural gas hydrate in the superficial sediment so as to decompose the natural gas hydrate into water and natural gas;
and the pumping unit is used for pumping the natural gas collected by the collecting unit.
Preferably, the collection cover is a hollow conical structure, and the top of the collection cover is connected with the suction unit.
Preferably, the device further comprises a fixing unit, wherein the fixing unit comprises a plurality of weights for fixing the collecting unit on the seabed mud volcano, and the weights are uniformly distributed on the convex part of the collecting blanket.
Preferably, the weight is a heavy anchor or a ground expansion anchor.
Preferably, the collecting unit further comprises a first heat insulating layer disposed on a bottom surface of the protruding portion of the collecting blanket.
Preferably, the heating unit comprises an electrical heating mesh, the first insulating layer being located between the bulge of the acquisition blanket and the electrical heating mesh.
Preferably, the collection unit further comprises a second heat insulation layer, and the second heat insulation layer is arranged on the inner wall of the collection cover.
Preferably, the suction unit comprises a suction valve and a shipborne suction system, the shipborne suction system comprises a suction pipeline, a fan and an air storage tank, the input end of the suction valve is communicated with the collection cover, the output end of the suction valve is connected with the input end of the fan through the suction pipeline, and the output end of the fan is connected with the input end of the air storage tank.
Preferably, still include the energy supply system, the input of energy supply system is connected with the output of gas holder, the output of energy supply system is connected with the heating unit.
Preferably, the energy supply system includes gas energy supply system, wind-force energy supply system and solar energy supply system, the input of gas energy supply system is connected with the output of gas holder, heating unit and fan all with gas energy supply system electric connection, heating unit and fan all with wind-force energy supply system electric connection, heating unit and fan all with solar energy supply system.
Compared with the prior art, the invention has the beneficial effects that: the natural gas released by the submarine mud volcano is collected by the collection unit, and the energy is supplied by the combination of various energy supply systems, so that the environment-friendly operation is realized, and meanwhile, the natural gas released by the mud volcano in a slow eruption state and the natural gas generated by the decomposition of natural gas hydrate in shallow surface sediments are collected, thereby being beneficial to relieving the current energy crisis, seawater acidification and greenhouse effect.
Drawings
Fig. 1 is a schematic structural diagram of the natural gas collection device suitable for the submarine mud volcano of the invention.
In the figure: 1-a collection unit; 11-collection blanket; 111-a projection; 12-a collecting cover; 13-a first thermally insulating layer; 14-a second insulating layer; 2-an electric heating net; 3-a suction unit; 31-a suction valve; 32-a suction duct; 33-a fan; 34-an air storage tank; 4-weight; 5-energy supply system.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention will be further described with reference to the accompanying drawings and the detailed description below:
as shown in fig. 1, the natural gas collecting device suitable for the seabed mud volcano is suitable for the mud volcano in the slow eruption state in the cold spring area, and comprises a collecting unit 1, a heating unit and a pumping unit 3, wherein the collecting unit 1 comprises a collecting cover 12 and a collecting blanket 11 covering the outer wall of the collecting cover 12, the edge of the bottom of the collecting blanket 11 extends outwards to form a bulge 111, and the pumping unit 3 is connected with the collecting cover 12; the collecting unit 1 is used for covering a mud volcano to collect natural gas; the heating unit is used for heating the natural gas hydrate in the superficial sediment so as to decompose the natural gas hydrate into water and natural gas; and the pumping unit 3 is used for pumping the natural gas collected by the collection unit 1.
Specifically, in this embodiment, the collection blanket 11 and the collection cover 12 of the collection unit 1 are both made of polymer materials, and have relatively stable physical properties and chemical properties; acquisition unit 1 is stably covered over the entire mud volcano by evenly distributing weight 4 over bulge 111 of acquisition blanket 11, preferably weight 4 being a heavy anchor or a ground expansion anchor. Adopting heavy anchors or stratum expansion anchors to enable the bulge part 111 of the acquisition blanket 11 to be tightly attached to the place outside the mud volcano non-eruption port, so that the bulge part 111 of the acquisition blanket 11 and the sea floor form a state similar to sealing, and fixedly covering the acquisition cover 12 at the mud volcano eruption port; when natural gas is collected, the collection cover 12 is of a hollow conical structure, the collection blanket 11 covers the outer wall of the collection cover 12, and the top of the collection cover 12 is connected with the pumping unit 3, so that natural gas released from mud volcanoes directly enters the collection cover 12, and the natural gas collected in the collection cover 12 can rise to the upper layer of the collection cover 12 and is pumped by the pumping unit 3 because the natural gas is insoluble in water and has a density far lower than that of seawater; meanwhile, the natural gas hydrate deposited on the shallow surface layer is heated by the heating unit arranged below the convex part 111 of the collection blanket 11, so that the natural gas hydrate is heated and decomposed into water and natural gas, and as the convex part 111 of the collection blanket 11 and the sea bottom form a state similar to a sealing state, most of the natural gas decomposed from the natural gas hydrate finally moves to the upper layer of the collection cover 12, and then is sucked by the suction unit 3.
As shown in fig. 1, acquisition unit 1 further comprises a first insulating layer 13, said first insulating layer 13 being arranged on the bottom surface of bulge 111 of acquisition blanket 11, preferably said heating unit comprises an electric heating net 2, first insulating layer 13 being located between bulge 111 of acquisition blanket 11 and electric heating net 13.
Specifically, the submarine mud volcano cannot generate an excessively high temperature due to the influence of submarine environment factors, and natural gas released by the submarine mud volcano forms natural gas hydrates in shallow surface sediments under the action of submarine low-temperature high-pressure conditions (hydrate stability regions). In this embodiment, the first thermal insulation layer 13 is disposed on the bottom surface of the protruding portion 111 of the collection blanket 11, preferably, the collection unit 1 further includes a second thermal insulation layer 14, the second thermal insulation layer 14 is disposed on the inner wall of the collection cover 12, and the electric heating net 2 is disposed on the first thermal insulation layer 13, because the heavy object 4 of the protruding portion 111 of the collection blanket 11 enables the protruding portion 111 of the collection blanket 11 and the sea floor to form a state similar to a seal, when collecting natural gas, the electric heating net 2 is used to heat natural gas hydrate in shallow surface sediments, so as to promote the natural gas hydrate to be decomposed into water and natural gas, and meanwhile, the first thermal insulation layer 13 and the second thermal insulation layer 14 both play a role in thermal insulation, thereby avoiding a situation that a large amount of heat generated by the electric heating net 2 is lost, and effectively ensuring the heating efficiency of the electric heating net 2.
As shown in fig. 1, the suction unit 3 comprises a suction valve 31 and an onboard suction system, the onboard suction system comprises a suction pipeline 32, a fan 33 and an air storage tank 34, the input end of the suction valve 31 is communicated with the collection hood 12, the output end of the suction valve 31 is connected with the input end of the fan 33 through the suction pipeline 32, and the output end of the fan 33 is connected with the input end of the air storage tank 34.
Specifically, when the suction unit 3 described in this embodiment collects natural gas, the input end of the fan 33 is connected to the output end of the suction valve 31 disposed at the vertex of the collection cover 12 through the suction pipe 32, and the natural gas sequentially passes through the suction valve 31, the suction pipe 32, and the fan 33 under the suction effect of the fan 33, and finally enters the gas storage tank 34.
As shown in fig. 1, the heating device further comprises an energy supply system 5, wherein an input end of the energy supply system 5 is connected with an output end of the air storage tank 34, and an output end of the energy supply system 5 is connected with the heating unit. Preferably, energy supply system 5 includes gas energy supply system, wind-force energy supply system and solar energy supply system, the input of gas energy supply system is connected with the output of gas holder 34, heating unit and fan 33 all with gas energy supply system electric connection, heating unit and fan 33 all with wind-force energy supply system electric connection, heating unit and fan 33 all with solar energy supply system.
Specifically, the energy supply system 5 comprises a gas energy supply system, a wind energy supply system and a solar energy supply system, wherein the gas energy supply system is a main energy supply system, the wind energy supply system and the solar energy supply system are auxiliary energy supply systems, the gas energy supply system obtains gas from the gas storage tank 34 to burn, thermal power generation is performed, most electric energy required in the operation is provided for the electric heating net 2 and the fan 33 through cables, the wind energy supply system and the solar energy supply system respectively use wind energy and solar energy to generate electricity, and part of electric energy required in the operation is provided for the electric heating net 2 and the fan 33 through cables, so that the environment-friendly operation of the natural gas collection device suitable for the volcano of the seabed mud is realized.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a natural gas collection system suitable for seabed mud volcano which characterized in that: the collecting device comprises a collecting unit, a heating unit and a suction unit, wherein the collecting unit comprises a collecting cover and a collecting blanket covering the outer wall of the collecting cover, the edge of the bottom of the collecting blanket extends outwards to form a convex part, the heating unit is arranged below the convex part of the collecting blanket, and the suction unit is connected with the collecting cover;
the acquisition unit is used for covering the submarine mud volcano to acquire natural gas;
the heating unit is used for heating the natural gas hydrate in the superficial sediment so as to decompose the natural gas hydrate into water and natural gas;
and the pumping unit is used for pumping the natural gas collected by the collecting unit.
2. The natural gas collection device suitable for the bottom sediment volcano as claimed in claim 1, wherein: the collection cover is of a hollow conical structure, and the top of the collection cover is connected with the suction unit.
3. The natural gas collection device suitable for the bottom sediment volcano as claimed in claim 1, wherein: the device also comprises a fixing unit, wherein the fixing unit comprises a plurality of weights used for fixing the collecting unit on the seabed mud volcano, and the weights are uniformly distributed on the convex part of the collecting blanket.
4. A natural gas collection device suitable for use in a volcano of seabed mud as claimed in claim 3, wherein: the weight is a heavy anchor or a stratum expansion anchor.
5. The natural gas collection device suitable for the bottom sediment volcano as claimed in claim 1, wherein: the collecting unit further comprises a first heat insulation layer arranged on the bottom surface of the protruding part of the collecting blanket.
6. The natural gas collection device suitable for the bottom sediment volcano as claimed in claim 5, wherein: the heating unit comprises an electric heating net, and the first heat insulation layer is located between the protruding portion of the collection blanket and the electric heating net.
7. The natural gas collection device suitable for the bottom sediment volcano as claimed in claim 1, wherein: the acquisition unit also comprises a second heat insulation layer which is arranged on the inner wall of the acquisition cover.
8. The natural gas collection device suitable for the bottom sediment volcano as claimed in claim 1, wherein: the suction unit comprises a suction valve and a shipborne suction system, the shipborne suction system comprises a suction pipeline, a fan and a gas storage tank, the input end of the suction valve is communicated with the collection cover, the output end of the suction valve is connected with the input end of the fan through the suction pipeline, and the output end of the fan is connected with the input end of the gas storage tank.
9. The natural gas collection device suitable for the bottom sediment volcano as claimed in claim 8, wherein: still include energy supply system, energy supply system's input is connected with the output of gas holder, heating unit and suction unit all with energy supply system electric connection.
10. A natural gas collection device suitable for use in a seafloor mud volcano as claimed in claim 9, wherein: the energy supply system comprises a gas energy supply system, a wind power energy supply system and a solar energy supply system, wherein the input end of the gas energy supply system is connected with the output end of the gas storage tank, the heating unit and the fan are both electrically connected with the gas energy supply system, the heating unit and the fan are both electrically connected with the wind power energy supply system, and the heating unit and the fan are both electrically connected with the solar energy supply system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910969766.3A CN110630269A (en) | 2019-10-12 | 2019-10-12 | Natural gas collection system suitable for seabed mud volcano |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910969766.3A CN110630269A (en) | 2019-10-12 | 2019-10-12 | Natural gas collection system suitable for seabed mud volcano |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110630269A true CN110630269A (en) | 2019-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910969766.3A Pending CN110630269A (en) | 2019-10-12 | 2019-10-12 | Natural gas collection system suitable for seabed mud volcano |
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| Country | Link |
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| CN (1) | CN110630269A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155972A (en) * | 2020-03-09 | 2020-05-15 | 青岛海洋地质研究所 | Covering type deep-sea mud volcanic type natural gas hydrate exploitation system and method |
| CN111648749A (en) * | 2020-07-09 | 2020-09-11 | 中国海洋石油集团有限公司 | Seabed shallow surface layer natural gas hydrate mobile vertical pipe type mining system and mining method |
-
2019
- 2019-10-12 CN CN201910969766.3A patent/CN110630269A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155972A (en) * | 2020-03-09 | 2020-05-15 | 青岛海洋地质研究所 | Covering type deep-sea mud volcanic type natural gas hydrate exploitation system and method |
| EP3879069A1 (en) * | 2020-03-09 | 2021-09-15 | Qingdao Institute of Marine Geology | Coverage-type deep-sea mud volcano-associated natural gas hydrate exploitation system and method |
| AU2020286197B2 (en) * | 2020-03-09 | 2021-11-04 | Qingdao Institute Of Marine Geology | Coverage-type deep-sea mud volcano-associated natural gas hydrate exploitation system and method |
| CN111648749A (en) * | 2020-07-09 | 2020-09-11 | 中国海洋石油集团有限公司 | Seabed shallow surface layer natural gas hydrate mobile vertical pipe type mining system and mining method |
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