CN104278975B - The collection way of sea bed combustible ice and system - Google Patents
The collection way of sea bed combustible ice and system Download PDFInfo
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- CN104278975B CN104278975B CN201310282370.4A CN201310282370A CN104278975B CN 104278975 B CN104278975 B CN 104278975B CN 201310282370 A CN201310282370 A CN 201310282370A CN 104278975 B CN104278975 B CN 104278975B
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- methane
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- combustible ice
- sea bed
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
Abstract
The invention provides collection way and the system of a kind of sea bed combustible ice: discharge a funnel shaped methane collection device to water-bed by marine methane collection ship, namely catcher is tipped upside down on the methane hydrate accumulation horizon above sea bed, catcher inner bottom part has a hot water flow in pipes, bottom catcher, constantly inject high temperature seawater or steam, heat and decompose combustible ice, methane after decomposition is constantly delivered on methane collection ship by the collection conduit of catcher inner tip, it is pressed into liquefied natural gas LNG or compressed natural gas CNG through supercooling and adding or makes combustible ice again and store, portion of methane is used for heating seawater, methane collection ship drags water-bed methane collection device 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, methane hydrate will stop decomposing, and pipeline and container tank have Insulation, emission to only have carbon dioxide.
Description
Technical field
The present invention relates to collection way and the system of a kind of sea bed combustible ice, 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 way and system, and technical field belongs to
Marine oil and gas resource exploitation field.
Background technology
Sea bed combustible ice is the crystalline solid that methane is formed with water molecules under cryogenic high pressure environment, and heating decompression is decomposed
The major gaseous component of rear generation is the methane that purity is the highest, methane molecule only one of which carbon atom, the dioxy of post combustion emission
Change carbon few, and do not have sulfide to produce, be a kind of preferably clean energy resource.Big some certain depth of midocean high latitude under water 300
～owing to belonging to cryogenic high pressure environment above the sea bed in 500 meters of marine sites, deposit the most highly stable combustible ice throughout the year.Mesh
Before, the most also do not have the technology collecting this sea bed combustible ice of a kind of maturation and way formally to put into commercial operation, reason
Being that existing collection way is the most more complicated, cost is high, and lacks controllability and operability, easily causes letting out of methane
Leakage, causes the greenhouse effect of environmental pollution and air, and all prior aries are also in the test chamber exploratory stage, it is impossible to put into business
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 collection way of sea bed combustible ice of safely controllable non-pollutant discharge and system.
The present invention is achieved by the following technical solutions: by marine methane collection ship discharge one funnel shaped by
Catcher, to water-bed, be namely buckled in the combustible ice above sea bed and pile up by the methane collection device of high duty metal silk braiding
Layer, a hot water or steam flow in pipes arranged at bottom catcher within, constantly bottom catcher injection high temperature seawater or
Steam, heats and decomposes combustible ice, and the methane after decomposition is constantly carried by the methane output channel of catcher inner tip
On methane collection ship, make liquefied natural gas LNG through supercooling or again make combustible ice, it is also possible to being compressed into compression sky
So gas CNG stores, and a part for collected methane is used for heating the sea water injected in catcher, and methane collection ship drags the bottom
Methane collection device slowly move, whole collection process can large-scale production continuously.
The invention has the beneficial effects as follows: 1, owing to the present invention is by injecting hot sea water or steam in catcher,
Making combustible ice decomposes to complete collection and confinement of gases, steaming as long as stopping injecting high temperature seawater or water during collecting
Gas, combustible ice will stop its catabolic process at short notice, not result in the leakage of methane.2, collected portion of methane exists
Burning post-heating sea water in combustion heating furnace, a heat part for the high temperature seawater or steam that inject sea bed is inhaled by combustible ice
Receiving, remainder rises to be recycled through heat exchanger heat exchange heating seawater again after above.Produce after methyl hydride combustion
Raw high-temp waste gas is discharged in air after water tank again, and moisture and heat in waste gas are again absorbed and utilize, whole
Cover system overwhelming majority pipeline and container tank use Insulation, almost without the waste of heat energy.3, this system uses diesel oil to send out
Group of motors is powered, and cost is low, reliable, easy to maintenance.4, this system simply collects the combustible ice above sea bed, does not results in
Sea bed caves in.5, collected methane is not dispersed in air, reaches collection rate through recycled for multiple times and maximizes.6, should
Most of carbon dioxide in the waste gas that system burning produces is mixed in the sea water in water tank, becomes carbonic acid and re-injects sea
Bed.Emission only has a small amount of carbon dioxide.Other garbages all backfill below sea bed and are reused, non-pollutant discharge.
(1) accompanying drawing explanation
Accompanying drawing 1 is that sea bed combustible ice of the present invention collects way and the schematic diagram of system；
Accompanying drawing 2 is that sea bed combustible ice of the present invention collects way and the rough schematic view of system；
Wherein: 1 hot water or steam input channel, 2 booster water pumps, 3 combustion heating furnaces, 4 booster fans, 5 water tanks, 6 bavins
Oily hair group of motors, 7 nitrogen compression refigerating machines, 8 holding vessels, 9 gas compression separators, 10 heat exchangers, 11 methane collection ships, 12 first
Alkane output channel, 13 feed pumps, 14 control centres, 15 catchers, 16 hawsers.
(2) detailed description of the invention
It is that sea bed combustible ice of the present invention collects way and a kind of specific embodiment of system as shown in Figure 1, 2.Its equipment bag
Include: hot water or steam input channel (1), booster water pump (2), combustion heating furnace (3), booster fan (4), water tank (5), diesel oil
Generating set (6), nitrogen compression refigerating machine (7), holding vessel (8), gas compression separator (9), heat exchanger (10), methane collection
Ship (11), methane output channel (12), feed pump (13), control centre (14), catcher (15) and hawser (16).
Collection process is to discharge a funnel shaped methane collection device (15) to water-bed, also by marine methane collection ship
Being exactly to be buckled in by methane collection device above the combustible ice accumulation horizon above sea bed, a heat is arranged at the bottom within methane collection device
Water or steam input channel (1), constantly inject high temperature seawater or steam bottom catcher, heat and decompose combustible ice,
Methane after decomposition is constantly delivered to methane collection ship (11) by the methane output channel (12) of methane collection device inner tip
On, enter heat exchanger (10) and cool down；Methane isolated condensed water after heat exchanger (10) cools down flows to water tank (5)
In.
Methane cools down through heat exchanger (10), then after gas compression separator (9) compresses and isolates moisture therein,
Distributing through flow-control distributing valve, major part methane becomes liquid after nitrogen compression refigerating machine (7) is cooled to-162 DEG C
Natural gas LNG, or again become combustible ice, it is also possible to it is compressed into compressed natural gas CNG and is transported to wait turn in holding vessel (8)
Fortune.Fraction is transported to burning heating seawater in combustion heating furnace (3).
Combustion heating furnace (3) initially can be with ready-made methane as fuel combustion, heating seawater.Combustion heating furnace (3)
The high-temp waste gas (main component is carbon dioxide, a small amount of sulfide and steam) produced after interior methyl hydride combustion is through booster fan
(4) supercharging, enters in water tank (5), the heating seawater again of the heat in waste gas；Steam in waste gas becomes aqueous water, sulfur
Compound also dissolves in water；Most of carbon dioxide in waste gas becomes carbonic acid and is mixed in the sea water in tank, re-injects sea bed.Row
Put thing and only have 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).
Sea water in water tank (5) is mainly drawn from surface seawater by feed pump (13), after heat exchanger (10) heats
There is provided.
Hot water or steam input channel (1) be according to sea bed gas output number and sea water backfill need determine input hot water
Or hot steam's.
Along with hot water or the continuous injection of steam, the combustible ice below catcher can constantly decompose, and collecting ship to be received in tow
Whole ore bed is successively collected by storage.
In order to reduce thermal loss, insulation will be made outside all transfer pipelines of this system and container tank and process.
The simplification drive manner of this system is, the hot water and steam after heating through superheated water or steam input channel (1),
Injecting sea bed continuously, gaseous methane is produced from methane output channel (12) continuously.
Claims (3)
1. the collection way of sea bed combustible ice, its equipment includes: hot water or steam 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), methane collection ship (11), methane output channel (12), feed pump (13), control
Center (14), catcher (15), hawser (16)；It is characterized in that catcher (15) is formed by the braiding of high duty metal silk, the end
While equipped with soft metal bracelet；In order to prevent thermal loss, will make at insulation outside whole conveyance conduits and container tank
Reason；Collection process is, discharges a funnel shaped methane collection device (15) to water-bed, also by marine methane collection ship (11)
Being exactly to be buckled in by methane collection device above the combustible ice accumulation horizon above sea bed, a heat is arranged at the bottom within methane collection device
Water or steam flow in pipes (1), constantly inject high temperature seawater or steam bottom catcher, heat and decompose combustible ice,
Methane after decomposition is constantly delivered to methane collection ship (11) by the methane output channel (12) of catcher (15) inner tip
On, entering heat exchanger (10) and cool down, major part methane becomes liquid after nitrogen compression refigerating machine (7) is cooled to-162 DEG C
State methane LNG, or again become combustible ice, or being compressed into compressed methane CNG, to be transported to holding vessel (8) medium to be transported,
Fraction is transported to burning heating seawater in combustion heating furnace (3).
The collection way of sea bed combustible ice the most according to claim 1, is characterized in that: the water in water tank (5) be through
Booster water pump (2) heats in being delivered into combustion heating furnace (3), is then constantly injected by hot water or steam input channel (1)
Sea bed, collected portion of methane as the fuel of combustion heating furnace (3) to heating of seawater；Combustion heating furnace (3) produces
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 only absorbed by the water,
Most of carbon dioxide in waste gas becomes carbonic acid and is mixed in the sea water in tank, and is again back to sea bed, and emission is only
A small amount of carbon dioxide.
The collection way of sea bed combustible ice the most according to claim 1, is characterized in that: sea water enters storage through feed pump (13)
Before water pot (5), heat exchange to be carried out through heat exchanger (10) and heat up, just be come up from methane output channel (12) simultaneously
Methane cooling.
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| CN201310282370.4A CN104278975B (en) | 2013-07-06 | 2013-07-06 | The collection way of sea bed combustible ice and system |
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| CN201310282370.4A CN104278975B (en) | 2013-07-06 | 2013-07-06 | The collection way of sea bed combustible ice and system |
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| CN104278975A CN104278975A (en) | 2015-01-14 |
| CN104278975B true CN104278975B (en) | 2016-12-28 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019868B (en) * | 2015-07-30 | 2018-01-30 | 迈瑞尔实验设备（上海）有限公司 | A kind of recovery method of seabed combustible ice |
| CN105840149B (en) * | 2016-03-24 | 2019-08-02 | 西南石油大学 | The sea-bottom natural gas collection device and method of external buoyancy tank wall surface heating |
| CN105840148B (en) * | 2016-03-24 | 2019-01-01 | 西南石油大学 | The sea-bottom natural gas collection device and method of outer buoyancy tank ladder pipe circulating hot water heating |
| CN105840147B (en) * | 2016-03-24 | 2019-01-01 | 西南石油大学 | Suspend the sea-bottom natural gas collection device and method of the heating of buoyancy tank helical pipe |
| CN105804704B (en) * | 2016-03-24 | 2019-09-24 | 西南石油大学 | Suspend the sea-bottom natural gas collection device and method of the heating of buoyancy tank inner wall |
| CN107288600B (en) * | 2017-08-07 | 2023-03-24 | 南充西南石油大学设计研究院有限责任公司 | Device and process for compositely driving oil field to increase yield by tail gas reinjection and waste heat utilization |
| CN110527498A (en) * | 2019-08-12 | 2019-12-03 | 成都能生材科技开发有限责任公司 | A kind of method that combustible ice is quickly subcooled nanometer liquefier and its exploits combustible ice |
| CN111577213B (en) * | 2020-05-28 | 2021-12-24 | 广东工业大学 | System and method for solid-state storage and transportation of gas produced by ocean combustible ice |
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| 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 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20161110 Address after: No. 599 Jiangnan Road, Jiangdong District, Zhejiang, Ningbo 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: 20230724 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: No. 599 Jiangnan Road, Jiangdong District, Zhejiang, Ningbo Patentee before: NINGBO CHENGDA MACHINERY Research Institute |
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