CN109735374A - The preparation facilities and preparation method of methane hydrate under a kind of normal pressure - Google Patents
The preparation facilities and preparation method of methane hydrate under a kind of normal pressure Download PDFInfo
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- CN109735374A CN109735374A CN201910209212.3A CN201910209212A CN109735374A CN 109735374 A CN109735374 A CN 109735374A CN 201910209212 A CN201910209212 A CN 201910209212A CN 109735374 A CN109735374 A CN 109735374A
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Abstract
The invention discloses a kind of preparation facilities of methane hydrate under normal pressure, including the foamed cell for generating foam；For providing the liquid-supply unit of low temperature methane liquid；The reactor unit for being used to generate methane hydrate that upper end is connected to foamed cell, lower end is connected to liquid-supply unit；For acquiring the data acquisition unit of temperature in reactor unit, resistivity.The preparation facilities of methane hydrate is under the conditions of atmospheric low-temperature under normal pressure of the present invention, low temperature methane liquid is passed through in holding vessel, high power foam liquid is generated using foam device, is moved upwards by low temperature methane steam and generates methane hydrate during heat and mass occurs with foam contacting；Whole experiment process is easy to operate, low to experimental situation requirement, can quickly prepare methane hydrate under normal pressure, has the advantages that time-consuming is short, expense is low, assay reproducibility is high.
Description
Technical field
The invention belongs to Natural Gas Hydrate Technology fields, and in particular to the preparation facilities of methane hydrate under a kind of normal pressure
And preparation method.
Background technique
Gas hydrates have extensive reserves in the world, are a kind of clean energy resourcies, therefore with important application prospects.
At present for gas hydrates the study found that its formation condition is substantially in the environment of high pressure low temperature, once pressure
Power reduces or temperature rises the fast decoupled that can all lead to hydrate.The method that laboratory prepares methane hydrate at present mainly has
It is several below:
1, liquid-vapor interface contact method: i.e. certain pressure and at a temperature of, from reactor head air inlet, keep natural gas and molten
Liquid forms hydrate nucleus in interfacial contact, and to spreading inside solution, to form a large amount of hydrates.
2, paddling process: blender is set to accelerate the dissolution of gas in the solution, improves the gas concentration in solution, promotees
Into the interaction between solution-air, reaction rate increases, and induction time shortens.
3, moisture: being scattered in gas by spray-on process, farthest expands solution-air contact area, due to atomizer
Throttle effect, can be further improved the degree of supercooling of water, increase the driving force of hydrate reaction, that is, increase the temperature and water of water
Phase balance temperature difference is closed,.
4, orifice bubble method: micropore orifice plate is set in the reactor, gas is distributed in water, gas is substantially increased
The solubility of body in water, expands solution-air contact area, accelerates hydrate nucleation rate, so as to shorten induction time.
The cardinal principle of method made above is all to increase air-water contact area under different pressures and temperature environment, mention
High water and reaction rate, to generate stable hydrate.The preparation method of the above methane hydrate is main in laboratory applications
It has the following problems:
(1) the above each method is reacted in high-pressure closed vessel, more demanding for experimental facilities and operation,
Once external environment changes, hydrate is easy to decompose.
(2) the above each method takes a long time when preparing hydrate, generally requires the plenty of time when generating hydrate, prepares
Be affected by the external environment larger, different experiments operating condition it is more difficult repeat the disadvantages of.
Therefore, need to be arranged preparation facilities and the preparation side of the methane hydrate under a kind of atmospheric pressure environment suitable for laboratory
Method.
Summary of the invention
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of preparation of methane hydrate under normal pressure
Device and preparation method.
To achieve the above object, the present invention adopts the following technical scheme: under a kind of normal pressure methane hydrate preparation facilities,
Including
For generating the foamed cell of foam；
For providing the liquid-supply unit of low temperature methane liquid；
The reactor list for being used to generate methane hydrate that upper end is connected to foamed cell, lower end is connected to liquid-supply unit
Member；
For acquiring the data acquisition unit of temperature in reactor unit, resistivity.
Preferably, the foamed cell includes gas pump, foaming cylinder；
The gas pump outlet by gas phase pipe with foam cylinder one end be connected to, it is described foam cylinder the other end and
The upper end of reactor unit is connected to；
What one end top of separate the reactor unit of the foaming cylinder was mixed in a certain ratio by liquid-phase tube and filling
High power foam liquid is connected to the bottom of the liquid collecting graduated cylinder of pure water；The bottom of the liquid-phase tube is inserted into inside foaming cylinder, institute
The bottom for stating liquid-phase tube is provided with nozzle；
One end of the separate reactor unit of the foaming cylinder is provided with screens, and the foaming cylinder is close to reactor unit
One end be provided with foam occur net.
Preferably, gas phase valve, the gas that the gas valve is held behind the door are provided on the gas phase pipe in the gas pump exit
Spinner flowmeter is provided on phase pipe；Liquid phase valve is provided on the liquid-phase tube.
Preferably, the liquid-supply unit includes the low temperature booster jar for filling low temperature methane liquid, and the low temperature booster jar is logical
It crosses and is connected to for fluid catheter with the lower part of reactor unit；
Pressure charging valve is provided at the top of the low temperature pressure charging valve；
It is described for being provided with tapping valve on fluid catheter.
Preferably, the reactor unit includes the reactor cap being successively detachably connected from top to bottom, reactor
Cylinder, holding vessel；
The reactor cap is in the tube structure that top blocks, and the top of the reactor cap is provided with exhaust pipe；It is described
The side wall of reactor cap is connected to one end of foaming cylinder；
The side wall of the holding vessel for fluid catheter with low temperature booster jar by being connected to；
The bottom of the reactor shell is provided with stainless steel cloth.
Preferably, vent valve is provided on the side wall of the reactor shell.
Preferably, the bottom of the holding vessel is provided with electronic balance.
Preferably, the data acquisition unit includes temperature sensor, resistance wire and data logger；
Several temperature sensors are uniformly arranged on the side wall of the reactor shell along the vertical direction；
It is provided with multiple resistance wires along the vertical direction inside the reactor shell on the stainless steel cloth top；
The temperature signal of the temperature sensor detection, the resistivity signal of resistance wire pass to data logger, institute
Data logger is stated to record the data of acquisition, count.
The preparation method of methane hydrate under a kind of normal pressure, comprising the following steps:
Step 1: passing sequentially through reactor shell, holding vessel, reactor cap screw thread and be attached, exhaust pipe and atmosphere
Connection, other valves are turned off；
Step 2: it opens pressure charging valve and is pressurized into low temperature booster jar, then open tapping valve, low temperature methane liquid is passed through
It is passed directly into holding vessel for fluid catheter, passes through the quality for the low temperature methane liquid that electronic balance record is added；
Step 3: high power foam liquid and pure water being mixed in a certain ratio and poured into liquid collecting graduated cylinder, open liquid phase valve goalkeeper
Mixed liquor is introduced into fluid injector and flows into foaming cylinder；Start gas pump simultaneously, is controlled by adjusting the aperture of gas phase valve
Gas flow size, and gas flow is monitored by spinner flowmeter, enter gas in foaming cylinder, makes air-flow by screens
Uniform shock foams mix liquid, and liquid is blown and occurs on the net, to form uniform foam and enter in reactor cap in foam；
Step 4: when foam since foam occur net outflow and fall when, open reactor cylinder body sidewall on deflation
Valve, the air pressure in equilibrium system make foam duration supply until being then turned off vent valve, at this time full of entire reactor shell
Stainless steel wire is also covered with foam on the net；
Step 5: in conjunction with the cryogenic gas that low temperature methane liquid evaporates in the holding vessel foam online with stainless steel wire,
Stainless steel wire generates methane hydrate on the net；In the process, by the temperature change in temperature sensor record system, by electricity
Hinder the change in resistance in silk record system；
Step 6: after low temperature methane liquid evaporates, disassembly holding vessel and reactor shell 1, from stainless steel cloth
It is upper to take out the hydrate generated.
The beneficial effects of the present invention are:
(1) preparation facilities of methane hydrate leads to low temperature methane liquid under the conditions of atmospheric low-temperature under normal pressure of the present invention
Enter in holding vessel, generates high power foam liquid using foam device, moved upwards by low temperature methane steam and occurred with foam contacting
Methane hydrate is generated during heat and mass；Whole experiment process is easy to operate, low to experimental situation requirement, can be normal
Pressure quickly prepares methane hydrate, has the advantages that time-consuming is short, expense is low, assay reproducibility is high.
(2) preparation facilities of methane hydrate monitors the generating process of hydrate in real time under normal pressure of the present invention, leads to
The variation of excess temperature, quality, resistivity monitors hydrate generation structure in real time, is judged by temperature sensor different
The temperature change of position is recorded the evaporation rate of low temperature methane liquid by mass change, can judge hydrate formation indirectly
Air content, by change in resistance judge hydrate generate thickness.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the structural schematic diagram of the preparation facilities of methane hydrate under normal pressure of the present invention；
Wherein: 1- reactor shell；2- holding vessel；3- reactor cap；4- exhaust pipe；5- low temperature booster jar；6- feed flow is led
Pipe；7- tapping valve；8- pressure charging valve；9- pressure gauge；10- temperature sensor；11- resistance wire；12- foaming cylinder；13- nozzle；14- bubble
Net occurs for foam；15- liquid collecting graduated cylinder；16- gas phase valve；17- spinner flowmeter；18- liquid phase valve；19- gas pump；20- rectification
Net；21- vent valve；22- stainless steel cloth；23- data logger；24- polytene heat-insulation plate；25- electronic balance.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In the present invention, the orientation or positional relationship of the instructions such as term such as "upper" "lower", " left side " is based on the figure
Orientation or positional relationship, only to facilitate describing the relative of each component of the present invention or component structure relationship and determination, not
Either component or element in the present invention are refered in particular to, is not considered as limiting the invention.
In the present invention, term such as " connected ", " connection " be shall be understood in a broad sense, and indicate may be a fixed connection, can also be with
It is to be integrally connected or be detachably connected；It can be directly connected, it can also be indirectly connected through an intermediary.For this field
Related scientific research or technical staff, can determine the concrete meaning of above-mentioned term in the present invention, Bu Nengli as the case may be
Solution is limitation of the present invention.
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, under a kind of normal pressure methane hydrate preparation facilities, including
For generating the foamed cell of foam；
For providing the liquid-supply unit of low temperature methane liquid；
The reactor list for being used to generate methane hydrate that upper end is connected to foamed cell, lower end is connected to liquid-supply unit
Member；
For acquiring the data acquisition unit of temperature in reactor unit, resistivity.
Preferably, the foamed cell includes gas pump 19, foaming cylinder 12；
The outlet of the gas pump 19 is connected to by gas phase pipe with one end of foaming cylinder 12, the another of cylinder 12 of foaming
One end is connected to the upper end of reactor unit；
One end top of separate the reactor unit of the foaming cylinder 12 passes through liquid-phase tube and is mixed in a certain ratio with filling
High power foam liquid be connected to the bottom of the liquid collecting graduated cylinder 15 of pure water；The bottom of the liquid-phase tube is inserted into foaming cylinder 12
Portion, the bottom of the liquid-phase tube are provided with nozzle 13；
One end of the separate reactor unit of the foaming cylinder 12 is provided with screens 20, and the foaming cylinder 12 leans on proximal response
One end of device unit is provided with foam and net 14 occurs.
Preferably, gas phase valve 16 is provided on the gas phase pipe in 19 exit of gas pump, after the gas phase valve 16
Spinner flowmeter 17 is provided on the gas phase pipe at end；Liquid phase valve 18 is provided on the liquid-phase tube.
It is poured into liquid collecting graduated cylinder 15 in use, high power foam liquid and pure water are mixed in a certain ratio, opens liquid phase valve
Mixed liquor is introduced into fluid injector 13 and is flowed into foaming cylinder 12 by 18；Gas stream is controlled by gas pump 19 and gas phase valve 16
Size is measured, gas enters in foaming cylinder 12 from one end, makes air-flow uniform shock foams mix liquid by screens 20, and by liquid
Body is blown to be occurred to form uniform foam on net 14 and enter in reactor unit in foam.
It is further preferred that net 14 occurs for the foam and foaming cylinder 12 carries out detachable connection, that is, it is conveniently replaceable tool
There is the foam of different meshes that net 14 occurs, so as to form the foam of different coefficient of foaming and size.
Preferably, the liquid-supply unit includes the low temperature booster jar 5 for filling low temperature methane liquid, the low temperature booster jar 5
By being connected to for fluid catheter 6 with the lower part of reactor unit；
The top of the low temperature pressure charging valve 5 is provided with pressure charging valve 8；
It is described for being provided with tapping valve 7 on fluid catheter 6.
It is further preferred that the top of the low temperature booster jar 5 is provided with pressure gauge 9 and liquidometer, to detect low temperature increasing
Press the liquid level of the pressure and liquid in tank 5.
It is pressurized in use, opening pressure charging valve 8 into low temperature booster jar 5, tapping valve 7 is then opened, by low temperature methane liquid
By being passed directly into reactor unit for fluid catheter 6.
It is further preferred that described be enclosed with insulating protective layer for fluid catheter 6, the loss of heat outwardly is reduced.
Preferably, the reactor unit includes reactor cap 3, the reactor being successively detachably connected from top to bottom
Cylinder 1, holding vessel 2；
The reactor cap 3 is in the tube structure that top blocks, and the top of the reactor cap 3 is provided with exhaust pipe 4, is used
In the cryogenic liquid of discharge evaporation, valve wherein is provided on exhaust pipe 4；The side wall of the reactor cap 3 and the cylinder 12 that foams
One end is connected to；
The side wall of the holding vessel 2 for fluid catheter 6 with low temperature booster jar 5 by being connected to；Holding vessel 2 for store into
The low temperature methane liquid entered, and reduce thermal loss；
The bottom of the reactor shell 1 is provided with stainless steel cloth 22；Specifically, stainless steel cloth 22 is bonded in reaction
On device cylinder inboard wall, while the mesh number of stainless steel cloth 22 is adjustable；The foam entered from foamed cell is collected in stainless steel
On silk screen 22, hydrate is formed with the steam that low temperature methane liquid generates；I.e. stainless steel cloth 22 is mainly used for collecting foam simultaneously
And low temperature methane steam is allowed to pass through, convenient for forming hydrate on stainless steel cloth 22, facilitate later period hydration amount of substance and volume
Measurement；
It is further preferred that the bottom of the reactor cap 3 is provided with internal screw thread, the top of the holding vessel 2 is provided with
The both ends of internal screw thread, the reactor shell 1 are provided with external screw thread；The both ends of the reactor shell 1 and reactor cap 3,
Holding vessel 2 is threadedly coupled respectively.
It is further preferred that the reactor shell 1 is made of transparent organic glass, facilitate foam in observation system
Variation.
Preferably, it is provided with vent valve 21 on the side wall of the reactor shell 1, for the interior pressure of equilibrium system,
Facilitate the introduction of foam.
Preferably, the bottom of the holding vessel 2 is provided with electronic balance 25, is mainly used for the mass change of record system.
It is further preferred that being provided with polytene heat-insulation plate 24 between the holding vessel 2 and electronic balance 25, electronics is reduced
Heat exchange between balance 25 and holding vessel 2.
Preferably, the data acquisition unit includes temperature sensor 10, resistance wire 11 and data logger 23；
Several temperature sensors 10 are uniformly arranged on the side wall of the reactor shell 1 along the vertical direction, for measuring
The Temperature Distribution of axial position in system；
It is provided with multiple resistance wires 11 along the vertical direction inside the reactor shell 1 on 22 top of stainless steel cloth；
The resistivity signal of temperature signal, resistance wire 11 that the temperature sensor 10 detects passes to data logger
23, the data of 23 pairs of data logger acquisitions are recorded, are counted.
Before applying foam, the medium in reactor unit is air, is existed at this time without conducting medium, resistance wire 11
Resistivity be maximum value, when bottom starts to be passed through low temperature methane liquid, and start simultaneously at when applying foam, due to being taken in foam
After the moisture covering resistance wire 11 of moisture and low temperature the methane liquid evaporation of band, the electric conductivity of resistance wire 11 enhances, electric at this time
The decline of resistance rate, after of short duration heat exchange, initially forms hydrate above stainless steel cloth 22, reduces ion fortune at this time
Dynamic channel cannot be connected to well between ion, the resistivity of resistance wire 11 can rise at this time, hence it is demonstrated that hydrate
In the presence of；Simultaneously by detection different location at 11 resistivity of resistance wire variation, just can prove that hydrate there are positions, in turn
Obtain the thickness of the hydrate generated.
The preparation method of methane hydrate under a kind of normal pressure, comprising the following steps:
Step 1: passing sequentially through reactor shell 1, holding vessel 2, reactor cap 3 screw thread and be attached, exhaust pipe 4 with
Atmosphere, other valves are turned off；
Step 2: it opens pressure charging valve 8 and is pressurized into low temperature booster jar 5, tapping valve 7 is then opened, by low temperature methane liquid
By being passed directly into holding vessel 2 for fluid catheter 6, pass through the quality for the low temperature methane liquid that the record of electronic balance 25 is added；
Low temperature methane liquid and environment in holding vessel 2 exchange heat, it forms low temperature methane steam (BOG) and slowly steams upwards
Hair, when reaching stainless steel cloth 22, comes into full contact with foam regions above, and heat transfer and mass transfer occurs；
Step 3: high power foam liquid and pure water being mixed in a certain ratio and poured into liquid collecting graduated cylinder 15, open liquid phase valve
Mixed liquor is introduced into fluid injector 13 and is flowed into foaming cylinder 12 by 18；Start gas pump 19 simultaneously, by adjusting gas phase valve
16 aperture controls gas flow size, and monitors gas flow by spinner flowmeter 17, enters gas in foaming cylinder 12,
Make air-flow uniform shock foams mix liquid by screens 20, and liquid is blown and is occurred on net 14 in foam, is formed uniform
Foam enters in reactor cap 3；
Step 4: when foam since foam occur net 14 outflow and fall when, open 1 side wall of reactor shell on putting
Air valve 21, the air pressure in equilibrium system make foam duration supply until being then turned off vent valve full of entire reactor shell 1
21, also it is covered with foam on stainless steel cloth 22 at this time；
Step 5: in holding vessel 2 low temperature methane liquid evaporate cryogenic gas in conjunction with the foam on stainless steel cloth 22,
Methane hydrate is generated on stainless steel cloth 22；In the process, become by the temperature in 10 record system of temperature sensor
Change, by the change in resistance in 11 record system of resistance wire；
Heat and mass occurs for low temperature methane gas and foam, and detailed process is as follows:
Low temperature methane liquid and environment in holding vessel 2 exchange heat, and form low-temperature steam (BOG) and slowly evaporation upwards, when
It when reaching stainless steel cloth 22, is come into full contact with foam regions above, heat transfer occurs and mass transfer, whole process are roughly divided into four
A stage:
First stage, after low-temperature steam (BOG) contacts foam, due to the shadow of temperature too low (being lower than -100 DEG C) and air-flow
It rings, lather collapse, while improving the temperature (- 100 DEG C to -80 DEG C or so) of low-temperature steam (BOG)；
Second stage, low-temperature steam (BOG) and liquid film, which react, directly forms hydrate, due to thickness of liquid film (100nm
Left and right) it is relatively thin and come into full contact with, and have certain degree of supercooling, and formation speed is very fast, and about 1 minute or so；
Phase III, low-temperature steam (BOG) temperature continue to rise and (be greater than -70 DEG C), liquid water condensation are become solid, is in
Existing ice and snow shape；
Fourth stage, the low-temperature steam (BOG) greater than 0 DEG C persistently rise, and a part stays in bubble, increases air bladder
Product, a part are overflowed foam regions, are diffused into environment by exhaust pipe 4；
Step 6: after low temperature methane liquid evaporates, disassembly holding vessel 2 and reactor shell 1, from stainless steel cloth
The hydrate of generation is taken out on 22.The preparation facilities of methane hydrate is under the conditions of atmospheric low-temperature under normal pressure of the present invention, by low temperature
Methane liquid is passed through in holding vessel, is generated high power foam liquid using foam device, is moved upwards and steep by low temperature methane steam
Foam contact occurs to generate methane hydrate during heat and mass；Whole experiment process is easy to operate, to experimental situation requirement
It is low, methane hydrate can be quickly prepared under normal pressure, have the advantages that time-consuming is short, expense is low, assay reproducibility is high.
The preparation facilities of methane hydrate monitors the generating process of hydrate in real time under normal pressure of the present invention, passes through temperature
The variation of degree, quality, resistivity, monitors hydrate generation structure in real time, judges different location by temperature sensor
Temperature change, by mass change record low temperature methane liquid evaporation rate, can judge containing for hydrate formation indirectly
Tolerance judges the thickness that hydrate generates by change in resistance.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not to limit of the invention
System, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art do not need to pay
The various modifications or changes that creative work can be made out are still within protection scope of the present invention.
Claims (9)
1. the preparation facilities of methane hydrate under a kind of normal pressure, characterized in that including
For generating the foamed cell of foam；
For providing the liquid-supply unit of low temperature methane liquid；
The reactor unit for being used to generate methane hydrate that upper end is connected to foamed cell, lower end is connected to liquid-supply unit；
For acquiring the data acquisition unit of temperature in reactor unit, resistivity.
2. the preparation facilities of methane hydrate under a kind of normal pressure as described in claim 1, characterized in that the foamed cell packet
Include gas pump, foaming cylinder；
The gas pump outlet by gas phase pipe with foam cylinder one end be connected to, it is described foam cylinder the other end with react
The upper end of device unit is connected to；
One end top of the separate reactor unit of the foaming cylinder by liquid-phase tube and fills the high power being mixed in a certain ratio
Foam solution is connected to the bottom of the liquid collecting graduated cylinder of pure water；The bottom of the liquid-phase tube is inserted into inside foaming cylinder, the liquid
The bottom of phase pipe is provided with nozzle；
One end of the separate reactor unit of the foaming cylinder is provided with screens, and the foaming cylinder is close to the one of reactor unit
End is provided with foam and net occurs.
3. the preparation facilities of methane hydrate under a kind of normal pressure as claimed in claim 2, characterized in that the gas pump discharge
It is provided with gas phase valve on the gas phase pipe at place, is provided with spinner flowmeter on the gas phase pipe that the gas valve is held behind the door；The liquid
Liquid phase valve is provided on phase pipe.
4. the preparation facilities of methane hydrate under a kind of normal pressure as described in claim 1, characterized in that the liquid-supply unit packet
Include the low temperature booster jar for filling low temperature methane liquid, the low temperature booster jar by the lower part for fluid catheter and reactor unit into
Row connection；
Pressure charging valve is provided at the top of the low temperature pressure charging valve；
It is described for being provided with tapping valve on fluid catheter.
5. the preparation facilities of methane hydrate under a kind of normal pressure as described in claim 1, characterized in that the reactor unit
Including the reactor cap, reactor shell, holding vessel being successively detachably connected from top to bottom；
The reactor cap is in the tube structure that top blocks, and the top of the reactor cap is provided with exhaust pipe；The reaction
The side wall of device lid is connected to one end of foaming cylinder；
The side wall of the holding vessel for fluid catheter with low temperature booster jar by being connected to；
The bottom of the reactor shell is provided with stainless steel cloth.
6. the preparation facilities of methane hydrate under a kind of normal pressure as claimed in claim 5, characterized in that the reactor shell
Side wall on be provided with vent valve.
7. the preparation facilities of methane hydrate under a kind of normal pressure as claimed in claim 5, characterized in that the bottom of the holding vessel
Portion is provided with electronic balance.
8. the preparation facilities of methane hydrate under a kind of normal pressure as claimed in claim 5, characterized in that the data acquisition is single
Member includes temperature sensor, resistance wire and data logger；
Several temperature sensors are uniformly arranged on the side wall of the reactor shell along the vertical direction；
It is provided with multiple resistance wires along the vertical direction inside the reactor shell on the stainless steel cloth top；
The temperature signal of the temperature sensor detection, the resistivity signal of resistance wire pass to data logger, the number
It recorded, counted according to data of the recorder to acquisition.
9. preparing the system of methane hydrate using the preparation facilities of methane hydrate under normal pressure a method as claimed in any one of claims 1-8
Preparation Method, characterized in that the following steps are included:
Step 1: passing sequentially through reactor shell, holding vessel, reactor cap screw thread and be attached, and exhaust pipe is communicated with the atmosphere,
Other valves are turned off；
Step 2: it opens pressure charging valve and is pressurized into low temperature booster jar, then open tapping valve, low temperature methane liquid is passed through into feed flow
Conduit is passed directly into holding vessel, passes through the quality for the low temperature methane liquid that electronic balance record is added；
Step 3: high power foam liquid and pure water being mixed in a certain ratio and poured into liquid collecting graduated cylinder, open liquid phase valve goalkeeper mixing
Liquid is introduced into fluid injector and flows into foaming cylinder；Start gas pump simultaneously, controls gas by adjusting the aperture of gas phase valve
Uninterrupted, and gas flow is monitored by spinner flowmeter, enter gas in foaming cylinder, keeps air-flow uniform by screens
Foams mix liquid is impacted, and liquid is blown and occurs on the net, to form uniform foam and enter in reactor cap in foam；
Step 4: when foam since foam occur net outflow and fall when, open reactor cylinder body sidewall on vent valve, put down
Air pressure in weighing apparatus system makes foam duration supply until being then turned off vent valve, at this time stainless steel full of entire reactor shell
Also it is covered with foam on silk screen；
Step 5: in conjunction with the cryogenic gas that low temperature methane liquid evaporates in the holding vessel foam online with stainless steel wire, stainless
Methane hydrate is generated on steel wire；In the process, by the temperature change in temperature sensor record system, by resistance wire
Change in resistance in record system；
Step 6: after low temperature methane liquid evaporates, disassembly holding vessel and reactor shell 1 take from stainless steel cloth
The hydrate being born.
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| CN112162085A (en) * | 2020-09-27 | 2021-01-01 | 西南石油大学 | Experimental device for simulating influence of salinity on pore natural gas hydrate |
| WO2024093924A1 (en) * | 2022-10-31 | 2024-05-10 | 中国石油化工股份有限公司 | Heat-conducting assembly for hydration reaction, hydrate reactor, and hydrate reaction system |
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| WO2012026631A1 (en) * | 2010-08-23 | 2012-03-01 | 동국대학교 산학협력단 | Device and method for manufacturing natural gas hydrate |
| CN103571557A (en) * | 2013-11-12 | 2014-02-12 | 北京化工大学 | Method for preparing natural gas hydrate |
| CN104267150A (en) * | 2014-09-29 | 2015-01-07 | 常州大学 | Novel experimental device for generating gas hydrate |
| CN107991298A (en) * | 2017-11-10 | 2018-05-04 | 中国石油大学(华东) | A kind of high power foam test research device and method |
| CN107880960A (en) * | 2017-11-22 | 2018-04-06 | 中能冰气能源科技（北京）有限公司 | Device in Gas alkane hydrate method of purification and system |
| CN109456436A (en) * | 2018-09-27 | 2019-03-12 | 青岛科技大学 | Gas hydrates nanometer promotor and preparation method thereof |
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| CN112162085A (en) * | 2020-09-27 | 2021-01-01 | 西南石油大学 | Experimental device for simulating influence of salinity on pore natural gas hydrate |
| WO2024093924A1 (en) * | 2022-10-31 | 2024-05-10 | 中国石油化工股份有限公司 | Heat-conducting assembly for hydration reaction, hydrate reactor, and hydrate reaction system |
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