CN104927950A - Method and device for processing natural gas hydrate slurry in submarine pipeline - Google Patents
Method and device for processing natural gas hydrate slurry in submarine pipeline Download PDFInfo
- Publication number
- CN104927950A CN104927950A CN201510182162.6A CN201510182162A CN104927950A CN 104927950 A CN104927950 A CN 104927950A CN 201510182162 A CN201510182162 A CN 201510182162A CN 104927950 A CN104927950 A CN 104927950A
- Authority
- CN
- China
- Prior art keywords
- gas hydrate
- gas
- seawater
- container
- boiler
- 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
Landscapes
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention provides a method and a device for processing natural gas hydrate slurry in a submarine pipeline. Natural gas solid particles are smashed through a stirring machine, then a mixed fluid of natural gas hydrate, gas and water is obtained through separation equipment, and then the mixed fluid is conveyed into a container by utilizing a first centrifugal pump. A second centrifugal pump and a third centrifugal pump are used for conveying partial seawater into a heat exchanger and a boiler respectively, the seawater flowing out from the heat exchanger is connected with the boiler, superheated steam is introduced into the container after being heated in the boiler so as to heat the mixed fluid, and the required natural gas is formed after heat exchange is performed on natural gas with excess temperature flowing out from the container and partial seawater, so that the device has the characteristics of simple equipment, high economic benefit, high energy utilization ratio and the like.
Description
Technical field
The present invention relates to the method and apparatus of exploitation seabed bottom gas hydrate, refer more particularly to the method and apparatus of gas hydrate slurry liquid in process submerged pipeline.
Background technology
Gas hydrate are the white solid matter like ice-like formed under cryogenic high pressure by natural G&W, and it is distributed in seabed, oceanic sediment and land permafrost band.Because its gas component is main mainly with methane, also known as methane hydrate.According to tentative prediction, the organic carbon in Sweet natural gas contained by global gas hydrate is oil, 2 times of total organic carbon contained by the fossil oil such as Sweet natural gas and coal, is considered to the important alternative energy after coal, oil and gas.Therefore, the investigation of gas hydrate and research are become to the focus of international ground educational circles in recent years.
As the gas hydrate of Future New Energy Source, be also a kind of energy of danger simultaneously.Exploitation about gas hydrate resemble a handle " double-edged sword ", need careful the treating of extreme care in addition.While its resource value of consideration, the severe environments disaster that relevant exploitation may bring to the mankind must be given one's full attention to.As a lot of scientists is warned again and again: if the exploitation of gas hydrate is improper, will aggravate global warming trend, this effect makes global climate become unstable the most at last, thus causes environmental hazard, seriously jeopardizes the existence of mankind itself.That is, in the design and implementation stage that gas hydrate develop, enough prevention awarenesses and technical measures must be had, prevent from or reduce gas hydrate as far as possible developing the environmental influence caused.
China starts to walk evening in the research of gas hydrate, does not also form the scientific and technical troop that various Detection Techniques can be used effectively to carry out ocean gas hydrate research and assessment at present.Strictly, be also unfamiliar with relevant Detection Techniques, lack propaedeutics, knowledge is compared with university with external advanced research centre with ability, differs greatly.In the enforcement period of the ninth five-year plan, Ministry of Land and Resources has carried out " the ore-prospecting future research project of China Seas gas hydrate ", carries out preliminary reflection seismic regionality investigation work, achieve the observational data of 4600km high-resolution seismic exploration at the South Sea.Recently, " 15 " ocean " 863 " set up again " ocean gas hydrate detection method " research topic in the works, expands the scope of biology barrier.Intend being formed by the gas hydrate of combining for China South Sea of earth physics, geochemistry and sampling and occurrence condition is studied, develop the new technology and stock number assessment technology of effectively carrying out gas hydrate comprehensive survey simultaneously, for carry out on a large scale from now on the census of manufacturing and practical provide science and technology support and the cultivate professional talent.Current many dynamics problems about gas hydrate dissociation it be unclear that, and production technique and technique also only rest on theory and experimental phase, and current people summarize three kinds of main reoovery methods according to the physical performance of gas hydrate:
(1) temperature activation method.Steam, hot water, hot salt brine or other hot-fluid are mainly pumped into natural gas hydrate stratum from ground by this method, and the fire flooding process that uses or utilize drill string well heater when also can adopt exploitation heavy oil, makes temperature rise and reach gas hydrate dissociation.The main weak point of hot production technique to cause a large amount of thermosteresis, and efficiency is very low, and particularly in permafrost region, even if utilize insulated piping, permafrost horizon also can reduce the net heat passing to reservoir.
(2) chemical-agent technique.Some chemical reagent, such as salt solution, methyl alcohol, ethanol, ethylene glycol, glycerol etc. can change the phase balance condition that gas hydrate are formed, and reduce the equilibrium temperature of gas hydrate.After being pumped into from wellhole by above-mentioned chemical reagent, the decomposition of gas hydrate will be caused.Chemical-agent technique comparatively temperature activation method effect is slow, but truly has the advantage reducing energy consumption, but its maximum shortcoming to be expense too expensive.And pressure residing for large midocean gas hydrate is higher, also this method should not be adopted.
(3) reduce pressure method.The object of gas hydrate dissociation is reached by reducing pressure energy, be generally by gas hydrate layer under free gas Guinier-Preston zone in " reduction " gas pressure or formed a Sweet natural gas " capsule " (artificially being formed by thermal excitation or chemical reagent effect), the gas hydrate contacted with Sweet natural gas become unstable well and are decomposed into natural G&W.The maximum feature of decompression method does not need expensive continuous agitation, thus may become one of effective ways of large scale mining gas hydrate from now on.
Summary of the invention
Not enough for overcoming above-mentioned prior art, the invention provides a kind of method and the device that process gas hydrate slurry liquid in submerged pipeline, the gas hydrate of seabed bottom are transported in marine container, then heating of seawater higher for part surface temperature is become superheated vapour, superheated vapour heated natural gas hydrate is utilized to make it become Sweet natural gas gas, and after the higher Sweet natural gas gas through heat exchanger of temperature, portion of energy is passed to the lower seawater of temperature, the Sweet natural gas gas flowed out from heat exchanger is the energy required for us.This device is not only simple, and is enablely fully used, and improves capacity usage ratio.
The technical solution used in the present invention is as follows: comprising the device adopted in method has a stirrer, the separator be arranged in seabed, mixed stream pipeline, the first impeller pump of conveying mixed stream, container, heat exchanger, seawater fluid pipeline, the second impeller pump of conveying seawater, the 3rd impeller pump, the boiler of conveying seawater.
The method and apparatus of gas hydrate slurry liquid in described process submerged pipeline, it is characterized in that, isolated for separator mixed stream is transported to container, superheated vapour after boiler heating is transported to container, superheated vapour heating mixed stream in container, gas hydrate become the higher gas of temperature after absorbing heat, are the gas required for us after carrying out heat exchange with part seawater.
In described process submerged pipeline, the method and apparatus of gas hydrate slurry liquid, is characterized in that, the gas through heat exchanger that the temperature obtained from boiler is higher has passed to seawater portion of energy, improves the utilising efficiency of energy.
In described process submerged pipeline, the method and apparatus of gas hydrate slurry liquid, is characterized in that, obtains the mixed stream of gas hydrate, water, gas through separator interaction energy.
The method and apparatus of gas hydrate slurry liquid in described process submerged pipeline, it is characterized in that, heating seawater becomes superheated vapour in the boiler.
The method and apparatus of gas hydrate slurry liquid in described process submerged pipeline, it is characterized in that, superheated vapour heats mixed stream in container, and the gas hydrate absorbed after heat become gas.
The advantage of invention
Compared with numerous installation method, the present invention has obvious feature.Overcome the drawback of the various method of existing exploiting ocean natural gas hydrate preferably, equipment is simple, easy to operate, with low cost, capacity usage ratio is high, gas hydrate slurry liquid in extensive process submerged pipeline can be applied to, for the mankind utilize ocean natural gas resource to have found a new way on a large scale.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is the method and apparatus schematic diagram of gas hydrate slurry liquid in process submerged pipeline;
Embodiment
Illustrate the device and method that the present invention specifically processes gas hydrate slurry liquid in submerged pipeline below with reference to the accompanying drawings.
The method and apparatus of gas hydrate slurry liquid in described process submerged pipeline, it is characterized in that, isolated for separator mixed stream is transported to container, superheated vapour after boiler heating is transported to container, superheated vapour heating mixed stream in container, gas hydrate become the higher gas of temperature after absorbing heat, are the gas required for us after carrying out heat exchange with part seawater.
In described process submerged pipeline, the method and apparatus of gas hydrate slurry liquid, is characterized in that, the gas through heat exchanger that the temperature obtained from boiler is higher has passed to seawater portion of energy, improves the utilising efficiency of energy.
In described process submerged pipeline, the method and apparatus of gas hydrate slurry liquid, is characterized in that, obtains the mixed stream of gas hydrate, water, gas through separator interaction energy.
The method and apparatus of gas hydrate slurry liquid in described process submerged pipeline, it is characterized in that, heating seawater becomes superheated vapour in the boiler.
The method and apparatus of gas hydrate slurry liquid in described process submerged pipeline, it is characterized in that, superheated vapour heats mixed stream in container, and the gas hydrate absorbed after heat become gas.
Numeral in accompanying drawing 1 is with lower component
1, stirrer
2, separator
3, gas hydrate transport pipe
4, the first impeller pump
5, container
6, heat exchanger
7, sea water conveying pipelines
8, the second impeller pump
9, the 3rd impeller pump
10, boiler.
Claims (6)
1. one kind processes the method and apparatus of gas hydrate slurry liquid in submerged pipeline: the device adopted in method has a stirrer (1), be arranged on the separator (2) in seabed, mixed stream pipeline (3), first impeller pump (4) of conveying mixed stream, container (5), heat exchanger (6), seawater fluid pipeline (7), second impeller pump (8) of conveying seawater, 3rd impeller pump (9) of conveying seawater, boiler (10), it is characterized in that: utilize stirrer (1) to pulverize gas hydrate at sea bed gas hydrate layer and exploit, by hydrate, the mixture of silt and decomposition gas is discharged to the silt separation apparatus (2) being positioned at seabed, hydrate after separation, the mixed stream of gas and water utilizes the first impeller pump (4) to be transported to be positioned at the container (5) on sea by pipeline (3), 3rd impeller pump (9) is by seawater higher for the temperature on sea input boiler (10), part seawater is transported to heat exchanger (6) through piping (7) by the second impeller pump (8), heating of seawater in boiler is become input pod (5) after superheated vapour, the natural gas via Cemented filling decomposited carries out thermal exchange to heat exchanger (6).The material needed for us is through heat exchanger (6) effluent air.
2. the method and apparatus processing gas hydrate slurry liquid in submerged pipeline as claimed in claim 1, it is characterized in that, isolated for separator mixed stream is transported to container, superheated vapour after boiler heating is transported to container, superheated vapour heating mixed stream in container, gas hydrate become the higher gas of temperature after absorbing heat, are the gas required for us after carrying out heat exchange with part seawater.
3. the method and apparatus processing gas hydrate slurry liquid in submerged pipeline as claimed in claim 1, it is characterized in that, the gas through heat exchanger that the temperature obtained from boiler is higher has passed to seawater portion of energy, improves the utilising efficiency of energy.
4. the method and apparatus processing gas hydrate slurry liquid in submerged pipeline as claimed in claim 1, is characterized in that, obtain the mixed stream of gas hydrate, water, gas through separator interaction energy.
5. the method and apparatus processing gas hydrate slurry liquid in submerged pipeline as claimed in claim 1, it is characterized in that, heating seawater becomes superheated vapour in the boiler.
6. the method and apparatus processing gas hydrate slurry liquid in submerged pipeline as claimed in claim 1, it is characterized in that, superheated vapour heats mixed stream in container, and the gas hydrate absorbed after heat become gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510182162.6A CN104927950A (en) | 2015-04-15 | 2015-04-15 | Method and device for processing natural gas hydrate slurry in submarine pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510182162.6A CN104927950A (en) | 2015-04-15 | 2015-04-15 | Method and device for processing natural gas hydrate slurry in submarine pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104927950A true CN104927950A (en) | 2015-09-23 |
Family
ID=54115380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510182162.6A Pending CN104927950A (en) | 2015-04-15 | 2015-04-15 | Method and device for processing natural gas hydrate slurry in submarine pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104927950A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587642A (en) * | 2004-09-21 | 2005-03-02 | 中国科学院广州能源研究所 | Method and device for sea natural gas hydrate production |
| CN1587641A (en) * | 2004-09-21 | 2005-03-02 | 中国科学院广州能源研究所 | Method and device for sea natural gas hydrate production |
| 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 |
| US20100006281A1 (en) * | 2008-07-09 | 2010-01-14 | Air Wars Defense Lp | Harvesting hydrocarbons and water from methane hydrate deposits and shale seams |
| US20120181041A1 (en) * | 2011-01-18 | 2012-07-19 | Todd Jennings Willman | Gas Hydrate Harvesting |
| CN103334729A (en) * | 2013-04-25 | 2013-10-02 | 李贤明 | Exploitation method and system of seabed methane hydrate |
| CN204060641U (en) * | 2014-06-27 | 2014-12-31 | 华北水利水电大学 | Sea bed gas hydrate recovery process control system |
-
2015
- 2015-04-15 CN CN201510182162.6A patent/CN104927950A/en active Pending
Patent Citations (7)
| 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 |
| CN1587642A (en) * | 2004-09-21 | 2005-03-02 | 中国科学院广州能源研究所 | Method and device for sea natural gas hydrate production |
| CN1587641A (en) * | 2004-09-21 | 2005-03-02 | 中国科学院广州能源研究所 | Method and device for sea natural gas hydrate production |
| US20100006281A1 (en) * | 2008-07-09 | 2010-01-14 | Air Wars Defense Lp | Harvesting hydrocarbons and water from methane hydrate deposits and shale seams |
| US20120181041A1 (en) * | 2011-01-18 | 2012-07-19 | Todd Jennings Willman | Gas Hydrate Harvesting |
| CN103334729A (en) * | 2013-04-25 | 2013-10-02 | 李贤明 | Exploitation method and system of seabed methane hydrate |
| CN204060641U (en) * | 2014-06-27 | 2014-12-31 | 华北水利水电大学 | Sea bed gas hydrate recovery process control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hassanpouryouzband et al. | Geological CO2 capture and storage with flue gas hydrate formation in frozen and unfrozen sediments: method development, real time-scale kinetic characteristics, efficiency, and clathrate structural transition | |
| CA2748363C (en) | Method and system for producing hydrocarbons from a hydrate reservoir using available waste heat | |
| Collett et al. | Methane Hydrates in Nature Current Knowledge and Challenges | |
| Busch et al. | The significance of caprock sealing integrity for CO2 storage | |
| Ingebritsen et al. | Numerical simulation of magmatic hydrothermal systems | |
| Ruppel | Tapping methane hydrates for unconventional natural gas | |
| Jang et al. | Recoverable gas from hydrate‐bearing sediments: Pore network model simulation and macroscale analyses | |
| US20150090455A1 (en) | Natural Gas Hydrate Reservoir Heating | |
| CN105422056A (en) | Method for mining natural gas hydrate in deep seafloor through carbon dioxide method | |
| Martinez et al. | Two‐phase convective CO2 dissolution in saline aquifers | |
| Chen et al. | Preparation of warm brine in situ seafloor based on the hydrate process for marine gas hydrate thermal stimulation | |
| Schicks et al. | Development, test, and evaluation of exploitation technologies for the application of gas production from natural gas hydrate reservoirs and their potential application in the Danube Delta, Black Sea | |
| Qanbari et al. | Storage of CO2 as hydrate beneath the ocean floor | |
| Song et al. | CO2 sequestration in depleted methane hydrate deposits with excess water | |
| RU2018116611A (en) | METHOD AND SYSTEM FOR EXTRACTION OF DIFFICULT GAS FROM UNDERWATER MEDIA, ITS CONVERSION TO CLATRATES AND SAFE TRANSPORTATION FOR CONSUMPTION | |
| Sahu et al. | Effect of methylamine, amylamine, and decylamine on the formation and dissociation kinetics of CO2 hydrate relevant for carbon dioxide sequestration | |
| Zhao et al. | Effect of methane solubility on hydrate formation and dissociation: review and perspectives | |
| Ku et al. | Frontier science and challenges on offshore carbon storage | |
| Shao et al. | Heat and mass transfer analysis during the process of methane hydrate dissociation by thermal stimulation | |
| Cheng et al. | Gas–liquid–solid migration characteristics of gas hydrate sediments in depressurization combined with thermal stimulation dissociation | |
| CN104927950A (en) | Method and device for processing natural gas hydrate slurry in submarine pipeline | |
| CN205297508U (en) | Environment -friendly exploitation gas hydrate's device | |
| Wang et al. | Water soluble gas in deep carbonate reservoir, Sichuan Basin, Southwest China | |
| Zhao et al. | A review on geological storage of marine carbon dioxide: Challenges and prospects | |
| Ning et al. | Numerical simulations of drilling mud invasion into the marine gas hydrate-bearing sediments |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150923 |