CN103291253B - The collecting device of sea bed gas hydrates - Google Patents
The collecting device of sea bed gas hydrates Download PDFInfo
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- CN103291253B CN103291253B CN201310283689.9A CN201310283689A CN103291253B CN 103291253 B CN103291253 B CN 103291253B CN 201310283689 A CN201310283689 A CN 201310283689A CN 103291253 B CN103291253 B CN 103291253B
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Abstract
The invention provides the collecting device of a kind of sea bed gas hydrates: discharge a funnel shaped natural gas collector to water-bed by offshore natural gas collecting ship, namely natural gas collector is buckled in the gas hydrates accumulation horizon above sea bed, collector inner bottom part has a hot water flow in pipes, bottom collector, constantly inject high temperature seawater or steam, heat and decompose gas hydrates, natural gas after decomposition is constantly delivered on natural gas collecting ship by the collection conduit of collector inner tip, through supercooling with add and be pressed into LNG, CNG or make again gas hydrates store, portion of natural gas is used for heating seawater, natural gas collecting ship drags water-bed natural gas collector and slowly moves, whole collection process can large-scale production continuously.As long as providing the benefit that high temperature seawater is injected in stopping, gas hydrates will stop decomposing, and pipeline and container tank have Insulation, emission to only have carbon dioxide.
Description
Technical field
The present invention relates to the collecting device of a kind of sea bed gas hydrates, especially a kind of simple in construction, reliable
Low cost, energy-conserving and environment-protective, the Marine oil and gas resource of safely controllable non-pollutant discharge collect complete set of equipments, and technical field belongs to sea
Imported oil gas resource exploitation field.
Background technology
Sea bed gas hydrates are the crystalline solid that natural gas is formed with water molecules under cryogenic high pressure environment, heating
The major gaseous component that decompression produces after decomposing is the natural gas (methane) that purity is the highest, methane molecule only one of which carbon atom,
The carbon dioxide of post combustion emission is few, and does not has sulfide to produce, and is a kind of preferably clean energy resource.Big midocean high latitude some
Owing to belonging to cryogenic high pressure environment above the sea bed in certain depth 300～500 meters of marine sites under water, deposit the most steady throughout the year
Fixed gas hydrates, namely combustible ice.At present, the most also there is no the collection this sea bed gas water of a kind of maturation
Technology and the way of compound are formally put into commercial operation, and reason is that existing collection way is the most more complicated, and cost is high, and lack
Weary controllability and operability, easily cause the leakage of natural gas, causes the greenhouse effects of environmental pollution and air, all existing
Technology is also in laboratory's exploratory stage, it is impossible to put into commercial operation.
Summary of the invention
The present invention is in order to make up the deficiencies in the prior art, it is provided that a kind of simple in construction, reliable, low cost, energy-conservation
Environmental protection, the collecting device of sea bed gas hydrates of safely controllable non-pollutant discharge.
The present invention is achieved by the following technical solutions: funnel shaped by offshore natural gas collecting ship release one
By the natural gas collector of high duty metal silk braiding to water-bed, namely collector is buckled in the natural gas above sea bed
Hydrate accumulation horizon, there is a hot water flow in pipes bottom within collector, constantly injects high temperature seawater bottom collector
Or steam, heats and decompose gas hydrates, the natural gas after decomposition is defeated by the natural gas of collector inner tip
Go out pipeline to be constantly delivered on natural gas collecting ship, make liquefied natural gas LNG through supercooling or again make gas water
Compound, it is also possible to be compressed into compressed natural gas CNG and store, a part for collected natural gas is used for heating to be injected in collector
Seawater, natural gas collecting ship drags water-bed natural gas collector and slowly moves, and whole collection process can scale continuously
Produce.
The invention has the beneficial effects as follows: 1, owing to the present invention is by injecting hot sea water or hot gas in collector, making sky
So gas hydrate is by having thermally decomposed gas collection, as long as stopping injecting high temperature seawater or hot gas during collecting,
Gas hydrates will stop its decomposable process at short notice, does not results in the leakage of natural gas.2, collected part
Natural gas burn in combustion heating furnace after heating seawater, inject sea bed high temperature seawater heat a part is hydrated by natural gas
Thing absorbs, and remainder rises to be recycled through heat exchanger heat exchange heating seawater again after above.Natural gas fires
The high-temp waste gas produced after burning is discharged in air after water tank again, moisture in waste gas and heat is absorbed again and profit
With, whole system overwhelming majority pipeline and container tank use Insulation, almost without the waste of heat energy.3, this system uses bavin
Oil electric set electric supply, cost is low, reliable, easy to maintenance.4, this system simply collects the natural gas hydration above sea bed
Thing, does not results in sea bed and caves in.5, collected natural gas is not dispersed in air, reaches to collect through recycled for multiple times
Rate maximizes.6, the most of carbon dioxide in the waste gas that the burning of this system produces is mixed in the seawater in water tank, becomes carbon
Acid re-injects sea bed.Emission only has a small amount of carbon dioxide.Other discarded objects all backfill below sea bed and are reused, nothing
Pollutant emission.
(1) accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram of sea bed gas hydrates collecting device of the present invention；
Accompanying drawing 2 is the rough schematic view of sea bed gas hydrates collecting device of the present invention；
Wherein: 1 hot water or hot gas input channel, 2 booster water pumps, 3 combustion heating furnaces, 4 booster fans, 5 water tanks, 6 bavins
Fry dried food ingredients group of motors, 7 nitrogen compression refigerating machines, 8 holding vessels, 9 gas compression separators, 10 heat exchangers, 11 natural gas collecting ships, 12
Natural gas output channel, 13 supply-water pumps, 14 control centres, 15 collectors, 16 hawsers.
(2) detailed description of the invention
It is a kind of specific embodiment of sea bed gas hydrates collecting device of the present invention as shown in Figure 1, 2.Including: hot water
Or hot gas input channel (1), booster water pump (2), combustion heating furnace (3), booster fan (4), water tank (5), diesel-driven generator
Group (6), nitrogen compression refigerating machine (7), holding vessel (8), gas compression separator (9), heat exchanger (10), natural gas collecting ship
(11), natural gas output channel (12), supply-water pump (13), control centre (14), collector (15) and hawser (16).
Discharge a funnel shaped natural gas collector (15) by offshore natural gas collecting ship and arrive the bottom, namely will
Natural gas collector is buckled in above the gas hydrates accumulation horizon above sea bed, and the bottom within natural gas collector has one
Individual hot water or hot gas input channel (1), constantly inject high temperature seawater or steam bottom collector, heat and decompose natural
Gas hydrate, the natural gas after decomposition is constantly delivered to by the natural gas output channel (12) of natural gas collector inner tip
On natural gas collecting ship (11), enter heat exchanger (10) and cool down；Natural gas via heat exchanger (10) is isolated cold after cooling down
Solidifying water flows in water tank (5).
Natural gas via heat exchanger (10) cools down, then compresses through gas compression separator (9) and isolate moisture therein
After, distributing through flow-control distributing valve, major part natural gas becomes after nitrogen pressure contraction cold (7) is cooled to-162 DEG C
Liquified natural gas LNG, or again become gas hydrates, or be compressed into compressed natural gas CNG and be transported to holding vessel (8)
Medium to be transported.Fraction is transported to burning heating seawater in combustion heating furnace (3).
Combustion heating furnace (3) initially can be with ready-made natural gas as fuel combustion, heating seawater.Combustion heating furnace
(3) high-temp waste gas (main component is carbon dioxide, a small amount of sulfide and steam) produced after interior combustion of natural gas is through increasing
Pressure fan (4) supercharging, enters in water tank (5), the heating seawater again of the heat in waste gas；Steam in waste gas becomes liquid
Water, sulfide also dissolves in water；Most of carbon dioxide in waste gas becomes carbonic acid and is mixed in the seawater in tank, re-injects sea
Bed.Emission only has a small amount of carbon dioxide.
The flow of the operation of this system particularly each pipeline is carried out overall control by control centre (14).
Seawater in water tank (5) is mainly drawn from surface seawater by supply-water pump (13), after heat exchanger (10) heats
There is provided.
Hot water or hot gas input channel (1) be according to sea bed gas output number and seawater backfill need determine input hot water
Or hot steam's.
Along with hot water or the continuous injection of hot gas, the gas hydrates below collector can constantly decompose, and collecting ship is wanted
Whole ore bed is successively collected by collector in tow.
In order to reduce thermal loss, insulation will be made outside the whole transfer pipeline of this system and container tank and process.
The simplification drive manner of this system is, hot water after heating or hot gas are through superheated water or hot gas input channel (1), source
Source constantly infuses sea bed, and gaseous natural gas is produced from natural gas output channel (12) continuously.
Claims (4)
1. the collecting device of sea bed gas hydrates, including: hot water or hot gas input channel (1), booster water pump (2), burning
Heating furnace (3), booster fan (4), water tank (5), diesel generating set (6), nitrogen compression refigerating machine (7), holding vessel (8),
Gas compression separator (9), heat exchanger (10), natural gas collecting ship (11), natural gas output channel (12), supply-water pump (13) with
And control centre (14), collector (15), hawser (16)；It is characterized in that collector (15) is to be formed by the braiding of high duty metal silk
, base is equipped with soft metal bracelet；In order to prevent thermal loss, thermal insulation separation outside whole conveyance conduits and container tank, will be made
It is heat-treated；Collection process is, discharges a funnel shaped natural gas collector (15) by offshore natural gas collecting ship (11)
To the bottom, being namely buckled in by natural gas collector above the gas hydrates accumulation horizon above sea bed, natural gas is collected
One hot water or hot gas input channel (1) are arranged at the bottom within device, constantly inject high temperature seawater bottom collector or water steams
Gas, heats and decomposes gas hydrates, and the natural gas after decomposition is exported by the natural gas of natural gas collector inner tip
Pipeline (12) is constantly delivered on natural gas collecting ship (11), enters heat exchanger (10) and cools down, and major part natural gas passes through
Nitrogen compression refigerating machine (7) becomes liquified natural gas LNG after being cooled to-162 DEG C, or again becomes gas hydrates, or
Person is compressed into compressed natural gas CNG, and to be transported to holding vessel (8) medium to be transported, and fraction is transported to combustion heating furnace (3) internal combustion
Burn and heating seawater.
The collecting device of sea bed gas hydrates the most according to claim 1, is characterized in that: collected part is natural
Gas as the fuel of combustion heating furnace (3) to heating of seawater；Water in water tank (5) is to be delivered into combustion through booster water pump (2)
Heat in burning heating furnace (3), then constantly inject sea bed by hot water or hot gas input channel (1).
The collecting device of sea bed gas hydrates the most according to claim 1, is characterized in that: combustion heating furnace (3) produces
Raw waste gas is by being input into after booster fan (4) supercharging in water tank (5), and its waste heat and moisture and sulfur-bearing refuse are inhaled by water
Receiving, the most of carbon dioxide in waste gas becomes carbonic acid and is mixed in the seawater in tank, and is again back to sea bed, and emission is only
There is a small amount of carbon dioxide.
The collecting device of sea bed gas hydrates the most according to claim 1, is characterized in that: seawater is through supply-water pump (13)
Before entering water tank (5), heat exchange to be carried out through heat exchanger (10) and heat up, give just from natural gas output channel simultaneously
(12) the natural gas cooling come up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310283689.9A CN103291253B (en) | 2013-07-06 | 2013-07-06 | The collecting device of sea bed gas hydrates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310283689.9A CN103291253B (en) | 2013-07-06 | 2013-07-06 | The collecting device of sea bed gas hydrates |
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| CN103291253A CN103291253A (en) | 2013-09-11 |
| CN103291253B true CN103291253B (en) | 2016-08-17 |
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| CN201310283689.9A Active CN103291253B (en) | 2013-07-06 | 2013-07-06 | The collecting device of sea bed gas hydrates |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106703780B (en) * | 2017-01-05 | 2019-04-16 | 大连理工大学 | A kind of slant well exploiting ocean natural gas hydrates method |
| CN113445966B (en) * | 2021-08-02 | 2022-07-22 | 西南石油大学 | Ocean natural gas hydrate exploitation analogue means |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1690360A (en) * | 2004-04-21 | 2005-11-02 | 中国科学院过程工程研究所 | Method and system for exploiting seabed natural gas hydrates |
| CN101016841A (en) * | 2007-02-13 | 2007-08-15 | 中国科学院广州能源研究所 | Method for exploiting natural gas hydrates and device thereof |
| CN102140907A (en) * | 2011-01-14 | 2011-08-03 | 何相龙 | Method for collecting methane from combustible ice |
| CN201953359U (en) * | 2011-02-23 | 2011-08-31 | 中国地质科学院勘探技术研究所 | Automatic exploitation system of natural gas hydrate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10141896A1 (en) * | 2001-08-28 | 2003-03-27 | Fraunhofer Ges Forschung | Method and device for extracting and conveying gas hydrates and gases from gas hydrates |
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2013
- 2013-07-06 CN CN201310283689.9A patent/CN103291253B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1690360A (en) * | 2004-04-21 | 2005-11-02 | 中国科学院过程工程研究所 | Method and system for exploiting seabed natural gas hydrates |
| CN101016841A (en) * | 2007-02-13 | 2007-08-15 | 中国科学院广州能源研究所 | Method for exploiting natural gas hydrates and device thereof |
| CN102140907A (en) * | 2011-01-14 | 2011-08-03 | 何相龙 | Method for collecting methane from combustible ice |
| CN201953359U (en) * | 2011-02-23 | 2011-08-31 | 中国地质科学院勘探技术研究所 | Automatic exploitation system of natural gas hydrate |
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Inventor after: Li Xianming Inventor after: Liu Xiaopeng Inventor after: Li Leshui Inventor after: Li Yonghong Inventor before: Li Xianming Inventor before: Li Leshui Inventor before: Li Yonghong |
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Effective date of registration: 20160711 Address after: 315000 Zhejiang Province, Ningbo City Jiangdong District Jiangnan Road No. 599 Applicant after: NINGBO CHENGDA MACHINERY Research Institute Address before: 250100 No. 18 Huaxin Road, Lixia District, Shandong, Ji'nan Applicant before: Li Xianming |
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Effective date of registration: 20230719 Address after: 255000 No. 108, Wanjie Road, high tech Zone, Zibo City, Shandong Province Patentee after: ZIBO HIGH-TECH ZONE CHENGDA MACHINERY DESIGN INSTITUTE Address before: 315000 No. 599 Jiangnan Road, Jiangdong District, Ningbo City, Zhejiang Province Patentee before: NINGBO CHENGDA MACHINERY Research Institute |
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