CN101543736B - Visualization device for preparing gas hydrate in a spraying way - Google Patents
Visualization device for preparing gas hydrate in a spraying way Download PDFInfo
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- CN101543736B CN101543736B CN2009100389856A CN200910038985A CN101543736B CN 101543736 B CN101543736 B CN 101543736B CN 2009100389856 A CN2009100389856 A CN 2009100389856A CN 200910038985 A CN200910038985 A CN 200910038985A CN 101543736 B CN101543736 B CN 101543736B
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Abstract
The invention discloses a visualization device for preparing gas hydrate in a spraying way, which comprises a gas circulating loop, a reaction water circulating loop, a cooling medium liquid circulating loop, a spraying reactor and a cooling medium thermotank. A gas pressure reducer, an air bottle and an air compressor are additionally connected to the front of a gas pressure pump; a vacuum pump and a pressure meter are connected outside a buffer tank; the reaction water circulating loop is connected with a plunger pump, a liquid flow meter, a valve, a reactor and a storage tank, and the front of the plunger pump is additionally connected with a water tank and a valve; the cooling medium liquid circulating loop is provided with a low temperature thermotank, and can provide cooling medium liquid for the buffer tank, the storage tank and the cooling medium thermotank. The invention can lead gas to fully contact with redaction water and be sprayed and atomized, increases gas-water contact area, shortens the induction time of the hydration reaction, greatly improve the generation speed of the gas hydrate, and realizes the quick generation of the gas hydrate, thereby being the device for efficiently preparing the gas hydrate.
Description
Technical field
The present invention relates to the Gas-Liquid Dispersion technology of gas hydrate, be specifically related to a kind of visualization device that sprays the preparation gas hydrate.
Background technology
Gas hydrate is a class cage modle envelope shape crystal that is formed under the cryogenic high pressure condition by some gas (or volatile liquid) and water.It is temperature required different with pressure condition that gas with various generates gas hydrate, and the kind that forms gas hydrate is also different.Gas hydrate has that gas-storing capacity is big, convenient transportation, characteristics safe in utilization, but the technology of gas hydrate is also not overripened at present, especially for the gas that is difficult to form hydrate, the temperature and pressure condition is wayward, hydration rate also is difficult to improve, so this The Application of Technology is badly in need of a kind of device of efficient gas hydrate preparing.
At present, the technology that is used to prepare gas hydrate mainly contains four kinds: static contact method, porous media completion method, bubble method of perturbation and mechanical mixing method.(1) static contact method is under undisturbed situation, and gas-liquid two-phase is directly contacted at the boundary place, and gas diffuses in the water by boundary, through crystallization nucleation, growth, finally forms gas hydrate.(2) the porous media completion method is that a kind of porous media that adopts quickens the technology that gas hydrate generates, and gas is fed in the porous media, increases the gas-liquid contact area, generates gas hydrate fast.(3) the bubble method of perturbation is that the orifice plate that gas is passed through in the reactor produces bubble, gas duck in drink constantly rise, fragmentation, increase the solubility of gas in water, shorten the hydration induction time, thereby accelerate hydrate nucleation, growth.(4) mechanical mixing method is that an agitator is set in reactor, can quicken the dissolving of gas in water by stirring, and impels gas fully to contact with water, shortens the hydration induction time, increases hydration rate.Also having the method that bubble method of perturbation and mechanical mixing method are combined, is that orifice plate and agitator are set in reactor simultaneously, can further increase the contact area of gas and water, quickens the generation of gas hydrate.
But there is shortcoming in above method: 1. the contact area of gas and water is all very limited, has influenced the generating rate of gas hydrate to a great extent; 2. the synthetic of gas hydrate is not continuous, and constantly the hydrate that generates has stoped the diffusion of gas in water, increased air blowing power and stirred power, and this does not advocate economically; 3. the fuel factor that produces during mechanical agitation also can influence hydrating condition inevitably.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, a kind of visualization device that sprays the preparation gas hydrate is provided, spray simultaneously by gas-liquid mixture, form mist flow or foam stream, increase gas solubility in water, increased the gas-liquid contact area, shortened the hydration induction time, can realize that hydrate generates efficiently, fast, utilize the visualization window can be simultaneously the observation of fluid-mixing state and response situation.
The object of the invention is achieved through the following technical solutions.
A kind of device of visual injection efficient gas hydrate preparing comprises gas circulation loop, reaction water closed circuit, cooling medium liquid circulating loop, reactor and refrigerant insulating box.
A kind of visualization device that sprays the preparation gas hydrate comprises gas circulation loop, reaction water closed circuit, cooling medium liquid circulating loop, reactor and refrigerant insulating box, wherein:
Described gas circulation loop is connected with gas cylinder 1, gas boosting pump 4, surge tank 5, storage tank 9 and dehydrater 8, gas circulation loop is connected to the gas feed 37 of reactor 7 by pipeline, unreacted gas enters storage tank 9 through the gas liquid outlet 38 of reactor 7 in the reactor 7, get back to the gas boosting pump 4 of gas circulation loop then through dehydrater 8, utilize air compressor 3 to be pressed into surge tank 5 at last and recycle;
Described reaction water closed circuit is connected with water tank 11, plunger displacement pump 12 and storage tank 9, the reaction water closed circuit is connected to the reaction water import 36 of reactor 7 by pipeline, unreacted water flows into the storage tank 9 from gas liquid outlet 38 in the reactor 7, is pressurized to reactor 7 through plunger displacement pump 12 then and recycles;
Described cooling medium liquid circulating loop is provided with low temperature thermostat bath 10, and low temperature thermostat bath 10 provides the circulation cooling medium liquid for surge tank 5, storage tank 9 and refrigerant insulating box 29, by the circulation cooling medium liquid surge tank 5, storage tank 9 and reactor 7 is carried out thermostatic control;
Be provided with the needle-valve 35 of regulating nozzle 30 areas in described reactor 7 inlet channels, valve handle by rotation needle-valve 35 makes needle-valve 35 precession forward, space between syringe needle and the nozzle 30 reduces gradually, and then the flow of control water inlet, reactor is provided with and entrainments the gas feed 37 that chamber 31 communicates, and entrainments chamber 31 and trunnion 32 and trunnion 32 and anemostat 33 and is connected as a single entity by welding; Trunnion 32 ends are equipped with Flow Control device 39, and anemostat 33 places have oval glass vision panel 34;
Described reactor 7 places refrigerant insulating box 29, and refrigerant insulating box 29 front sides have a glass vision panel, and is corresponding with the form 34 on the reactor 7, is convenient to observe.
Gas is entrainmented 31 places, chamber by what reaction under high pressure water entrainmented into described reactor 7, and gas-liquid is mixed at trunnion 32 places, at last by Flow Control device 39 in anemostat 33 places jet atomization, under the high pressure low temperature environment, generate gas hydrate.
Anemostat 33 places of described reactor 7 have form 34, with atomizing effect in the observing response device and hydration situation.
Trunnion 3 ends of described reactor 7 and Flow Control device 12 are by being threaded, by changing the aperture that Flow Control device 12 changes trunnion 3 ends.
Temperature sensor (40,41,42) and pressure sensor (43,44,45) all are equipped with to measure temperature and pressure everywhere in entrainment chamber 31, trunnion 32 and anemostat 33 places of described reactor 7.
Air valve (19,21,23), check-valves (24,25) and gas flowmeter (26,27) also are housed on the described gas circulation loop; Described reaction water closed circuit also is equipped with valve (13,16,17,18) and fluid flowmeter 28.
Be connected with vavuum pump 6 and Pressure gauge on the branch road of described surge tank 5.
The pipeline that described gas boosting pump 4 is connected with plunger displacement pump 12 is respectively equipped with gas safety valve 20 and liquid safe valve 15.
Described surge tank 5 external refrigerant chucks, storage tank 9 built-in refrigerant coil pipes, the stainless steel chuck built-in heat insulation cotton of refrigerant insulating box 29.
The operating procedure of package unit is: 1. open vavuum pump 6, realize surge tank 5, reactor 7, storage tank 9 and the required vacuum requirement of each gas circuit pipeline; 2. start cooling medium liquid circulating loop, the temperature of control surge tank 5, reactor 7 and storage tank 9; 3. utilize air compressor 3 and gas booster pump 4 that the gas boosting in the gas cylinder 1 is gone into surge tank 5, reach required pressure (about 10MPa), by surge tank 5 release portion gases in reactor 7 and storage tank 9, close gas cylinder 1 then, make in the storage tank 9 gas be gone into surge tank 5, realize the gas circuit circulation by 4 superchargings of gas boosting pump; 4. an amount of reaction water by water tank 11 through plunger displacement pump 12 superchargings after 30 ejections of reactor 7 nozzles, entrainmenting the gas that circulation is entrainmented in chamber 31, after the preliminary mixing of gas and reaction water, carry out the exchange (comprising the exchange heat that the temperature difference causes) of energy and quality at reactor trunnion 32 places, at last in anemostat 33 places jet atomization, droplet after the atomizing is with after gas fully contacts, under cryogenic conditions, increase gas pressure in the reactor 7, just can in form 34, see having hydrate crystal to generate in the short time.Needle-valve 35 on the reactor 7 can be controlled nozzle 30 areas, and then control reaction water inlet; Trunnion 32 ends of reactor 7 are equipped with Flow Control device 39, can carry out the change of trunnion 32 end apertures; 29 pairs of inside reactors of the refrigerant insulating box of reactor 7 outsides carry out thermostatic control, liberated heat in the hydration reaction process can be changed away refrigerant insulating box stainless steel chuck built-in heat insulation cotton simultaneously; Be equipped with gas flowmeter (26,27) monitoring gas flow on the gas circulation loop; Reactor 7 nozzles 30 places, trunnion 32 places, anemostat 33 places are equipped with the temperature and pressure sensor reaction condition are measured; Be provided with dehydrater 8 before the gas flowmeter 26, be used for from the come out dehumidifying of gas of storage tank 9; Gas boosting pump 4 and plunger displacement pump 12 are respectively equipped with gas safety valve 20 and liquid safe valve 15, prevent the excessive damage that causes equipment of air pressure or hydraulic pressure.
A kind of visualization device that sprays the preparation gas hydrate of the present invention has following characteristics:
(1) reactor 7 anemostats 33 places are provided with glass vision panel 34 in order to atomizing effect and hydration situation in the observing response device 7.
(2) reactor 7 nozzles 30 places are provided with needle-valve 25 in order to adjusting nozzle 30 areas, and then control reaction water inlet.
(3) reactor 7 trunnions 32 ends are equipped with Flow Control device 39, can carry out the change of trunnion 32 end apertures.
(4) gas boosting pump 4, surge tank 5, air valve (19,21,23), gas flowmeter (26,27), check-valves (24,25) and dehydrater 8 are arranged on the gas circulation loop.
(5) plunger displacement pump 12, valve (13,16,17,18), fluid flowmeter 28 and storage tank 8 are arranged on the reaction water closed circuit.
(6) low temperature thermostat bath 9 can be controlled the temperature of surge tank 5, reactor 7 and storage tank 9.
(7) surge tank 5 external refrigerant chucks, storage tank 9 built-in refrigerant coil pipes, refrigerant insulating box 29 chuck built-in heat insulation cottons.
(8) gas boosting pump 4 and plunger displacement pump 12 are respectively equipped with gas safety valve 20 and liquid safe valve 15.
The present invention compared with prior art has following advantage and beneficial effect:
The spray atomization technology of existing preparation hydrate only carries out jet atomization at liquid, contacts mixing again with gas, and the feed liquor flow can not control, and atomizing effect and hydration reaction situation can not be observed.A kind of visualization device that sprays the preparation gas hydrate of the present invention, entrainment gas by liquid, again gas-liquid mixture is sprayed simultaneously, form mist flow or foam stream, increasing gas aspects such as solubility, increase gas-liquid contact area, shortening hydration induction time and raising hydration rate in water, more obvious than prior art effect, can realize that hydrate generates efficiently, fast.The design of visualization window of the present invention has realized the observation to fluid-mixing state and response situation, and can utilize video camera and image processing software to analyze its foam or droplet size, and then its atomizing effect and reaction rate studied, improve hydration reaction speed.
Description of drawings
Fig. 1 is the structural representation of apparatus of the present invention;
Fig. 2 is the structure chart of the reactor of apparatus of the present invention.
Gas cylinder 1, gas pressure reducer 2, air compressor 3, gas boosting pump 4, surge tank 5, vavuum pump 6, reactor 7, dehydrater 8, storage tank 9, low temperature thermostat bath 10, water tank 11, plunger displacement pump 12, valve 13, valve 14, liquid safe valve 15, valve 16, valve 17, valve 18, air valve 19, gas safety valve 20, air valve 21, air valve 22, air valve 23, check-valves 24, check-valves 25, gas flowmeter 26, gas flowmeter 27, fluid flowmeter 28, refrigerant insulating box 29, valve 18, air valve 19, nozzle 30, entrainment chamber 31, trunnion 32, anemostat 33, form 34, needle-valve 35, reaction water import 36, gas feed 37, gas liquid outlet 38, Flow Control device 39, temperature sensor 40, temperature sensor 41, temperature sensor 42, pressure sensor 43, pressure sensor 44, pressure sensor 45.
The specific embodiment
A kind of visualization device that sprays the preparation gas hydrate comprises gas circulation loop, reaction water closed circuit, cooling medium liquid circulating loop, injection reactor and refrigerant insulating box 29.A kind of visualization device that sprays the preparation gas hydrate is characterized in that, comprises gas circulation loop, reaction water closed circuit, cooling medium liquid circulating loop, reactor and refrigerant insulating box.
Gas circuit vacuumizes: open air valve (19,21,22,23), close gas pressure reducer 2 and valve (13,17,18), open 6 pairs of air-channel systems of vavuum pump and vacuumize, until the required vacuum requirement of reactor 7, surge tank 5, storage tank 9 and each gas circuit pipeline.
Start refrigeration system: open low temperature thermostat bath 10 refrigeration, and the circulation of beginning cooling medium liquid, the temperature of control surge tank 5, reactor 7 and storage tank 9.
Realize gas circulation: close gas check valve (21,22) and gas pressure reducer 2, open air compressor 3 and gas booster pump 4 gas boosting in the gas cylinder 1 is gone into surge tank 5, reach required pressure (about 10MPa); Open air valve (19,21,23), close gas pressure reducer 2, valve (13,17,18), air compressor 3 and gas booster pump 4, surge tank 5 portion gas are discharged in reactor 7 and the storage tank 9, the two pressure is controlled in gas boosting pump 4 inlet pressure ranges (less than 0.8MPa); Close gas pressure reducer 2, open air compressor 3 and gas booster pump 4 and make in the storage tank 9 gas be gone into surge tank 5, realize the gas circuit circulation by 4 superchargings of gas boosting pump;
Feed reaction under high pressure water: valve-off (13,17), open valve (14,16) and plunger displacement pump 12, water in the water tank 11 is pressurized until liquid safe valve 15 has water to overflow, Open valve 17 then, make water under high pressure enter reactor 7 through reaction water import 36, spray at nozzle 30 places, entrainmenting the gas that circulation is entrainmented in chamber 31, after the preliminary mixing of gas and reaction water, 32 places carry out the exchange of energy and quality at the reactor trunnion, at last in anemostat 33 places jet atomization, droplet after the atomizing is with after gas fully contacts, under cryogenic conditions, increase air valve 23 apertures, make in the reactor 7 gas pressures be increased to reaction pressure (5～8MPa), just can see in form 34 in the short time that the hydrate crystal generation is arranged.
Can control nozzle 30 areas by the needle-valve on the conditioned reaction device 7 35 in addition, and then the inlet of control reaction water; The Flow Control device 39 of changing trunnion 32 ends can change trunnion 32 end apertures, thereby can regulate mist droplet particle size.The temperature and pressure condition of hydration reaction process can be measured by the temperature sensor (40,41,42) that entrainments chamber 31, trunnion 32 and anemostat 33 places and the pressure sensor (43,44,45) of reactor 7.
This device can be added gas by gas cylinder 1 in the process of preparation hydrate, add reaction water by water tank 11; Unreacted gas can enter storage tank, is circulated back to gas boosting pump 4 through dehydrater 8, and unreacted water can be stored in the storage tank 9, can be at valve-off 14, open valve 13 in, the water in the storage tank 9 is recycled by plunger displacement pump 12 superchargings.
The design of visualization window of the present invention has realized the observation to fluid-mixing state and response situation, can be clearly seen that the atomizing situation of mixture in the reactor by window, utilize high-speed camera and image processing software to analyze its foam or the mist droplet particle size order of magnitude 10～10
2μ m is than the mist droplet particle size 10 of spraying formation in the prior art
2～10
3μ m decreases; Carrying out CH
4During the hydrate experiment, utilize data collecting instrument that the temperature and pressure data are gathered, find that reaction temperature is at 0～5 ℃, pressure is in 5～8MPa scope, the hydrate degree of supercooling can be reduced to 3 ℃, the induction time of hydration experiment can be reduced within 100～150min, decreases than hydration induction time (more than the 200min) in the existing stirring technique.
Claims (9)
1. a visualization device that sprays the preparation gas hydrate is characterized in that, comprises gas circulation loop, reaction water closed circuit, cooling medium liquid circulating loop, reactor and refrigerant insulating box, wherein:
Described gas circulation loop is connected with gas cylinder (1), gas boosting pump (4), surge tank (5), storage tank (9) and dehydrater (8), gas circulation loop is connected to the gas feed (37) of reactor (7) by pipeline, unreacted gas enters storage tank (9) through the gas liquid outlet (38) of reactor (7) in the reactor (7), get back to the gas boosting pump (4) of gas circulation loop then through dehydrater (8), utilize air compressor (3) to be pressed into surge tank (5) at last and recycle;
Described reaction water closed circuit is connected with water tank (11), plunger displacement pump (12) and storage tank (9), the reaction water closed circuit is connected to the reaction water import (36) of reactor (7) by pipeline, unreacted water flows into the storage tank (9) from gas liquid outlet (38) in the reactor (7), is pressurized to reactor (7) through plunger displacement pump (12) then and recycles;
Described cooling medium liquid circulating loop is provided with low temperature thermostat bath (10), low temperature thermostat bath (10) is that surge tank (5), storage tank (9) and refrigerant insulating box (29) provide the circulation cooling medium liquid, by the circulation cooling medium liquid surge tank (5), storage tank (9) and reactor (7) is carried out thermostatic control;
Be provided with the needle-valve (35) of regulating nozzle (30) area in described reactor (7) inlet channel, valve handle by rotation needle-valve (35) makes needle-valve (35) precession forward, space between syringe needle and the nozzle (30) reduces gradually, and then the flow of control water inlet, reactor is provided with and entrainments the gas feed (37) that chamber (31) communicates, and entrainments chamber (31) and is connected as a single entity by welding with anemostat (33) with trunnion (32) and trunnion (32); Trunnion (32) end is equipped with Flow Control device (39), and anemostat (33) locates to have oval glass vision panel (34);
Described reactor (7) places refrigerant insulating box (29), and refrigerant insulating box (29) front side has a glass vision panel, and is corresponding with the form (34) on the reactor (7), is convenient to observe.
2. a kind of visualization device that sprays the preparation gas hydrate according to claim 1, it is characterized in that gas is entrainmented the into described chamber (31) of entrainmenting by reaction under high pressure water and locates, gas-liquid is located to mix at trunnion (32), locate jet atomization by Flow Control device (39) at anemostat (33) at last, under the high pressure low temperature environment, generate gas hydrate.
3. a kind of visualization device that sprays the preparation gas hydrate according to claim 1 is characterized in that the anemostat (33) of described reactor (7) locates to have form (34), with atomizing effect in the observing response device and hydration situation.
4. a kind of visualization device that sprays the preparation gas hydrate according to claim 1, it is characterized in that the terminal and Flow Control device (39) of the trunnion (32) of described reactor (7) is by being threaded, by changing the aperture that Flow Control device (39) changes trunnion (32) end.
5. a kind of visualization device that sprays the preparation gas hydrate according to claim 1 is characterized in that entrainment chamber (31), trunnion (32) and the anemostat (33) of described reactor (7) locates all to be equipped with temperature sensor (40,41,42) and pressure sensor (43,44,45) with measurement temperature and pressure everywhere.
6. a kind of visualization device that sprays the preparation gas hydrate according to claim 1 is characterized in that also being equipped with on the described gas circulation loop air valve (19,21,23), check-valves (24,25) and gas flowmeter (26,27); Described reaction water closed circuit also is equipped with valve (13,16,17,18) and fluid flowmeter (28).
7. a kind of visualization device that sprays the preparation gas hydrate according to claim 1 is characterized in that being connected with vavuum pump (6) and Pressure gauge on the branch road of described surge tank (5).
8. a kind of visualization device that sprays the preparation gas hydrate according to claim 1 is characterized in that the pipeline that is connected with plunger displacement pump (12) with described gas boosting pump (4) is respectively equipped with gas safety valve (20) and liquid safe valve (15).
9. a kind of visualization device that sprays the preparation gas hydrate according to claim 1 is characterized in that the external refrigerant chuck of described surge tank (5), the built-in refrigerant coil pipe of storage tank (9), the stainless steel chuck built-in heat insulation cotton of refrigerant insulating box (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100389856A CN101543736B (en) | 2009-04-24 | 2009-04-24 | Visualization device for preparing gas hydrate in a spraying way |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100389856A CN101543736B (en) | 2009-04-24 | 2009-04-24 | Visualization device for preparing gas hydrate in a spraying way |
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| CN101543736A CN101543736A (en) | 2009-09-30 |
| CN101543736B true CN101543736B (en) | 2011-05-18 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103623766B (en) * | 2013-12-10 | 2015-03-11 | 中国科学院广州能源研究所 | Spraying device for rapidly forming gas hydrate |
| CN105301205A (en) * | 2015-11-30 | 2016-02-03 | 中国科学院广州能源研究所 | Visual gas hydrate dynamic experimental device |
| CN105548183B (en) * | 2015-12-20 | 2019-03-05 | 华南理工大学 | A kind of microreactor of visible observation gas hydrate reaction process |
| CN105650462B (en) * | 2016-02-25 | 2017-12-15 | 常州墨之萃科技有限公司 | A kind of recovery, storage and the reutilization system of graphene reacting gas |
| CN106053038B (en) * | 2016-06-12 | 2019-04-09 | 上海发电设备成套设计研究院有限责任公司 | A kind of experimental rig and test method of gas liquid two purpose test Methods of Safety Valve Discharge Capacity |
| CN111282177A (en) * | 2020-04-10 | 2020-06-16 | 南水北调中线信息科技有限公司 | Refrigeration and fire extinguishing equipment utilizing carbon dioxide hydrate |
| CN112476042B (en) * | 2020-10-31 | 2022-04-22 | 华南理工大学 | Quantitative high-pressure high-speed oil-gas cooling and lubricating nozzle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1672782A (en) * | 2005-01-04 | 2005-09-28 | 太原理工大学 | Efficient gas hydrate preparing method and apparatus |
| CN1962043A (en) * | 2006-10-27 | 2007-05-16 | 中国科学院广州能源研究所 | A gas hydrate high-speed preparation method and device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1672782A (en) * | 2005-01-04 | 2005-09-28 | 太原理工大学 | Efficient gas hydrate preparing method and apparatus |
| CN1962043A (en) * | 2006-10-27 | 2007-05-16 | 中国科学院广州能源研究所 | A gas hydrate high-speed preparation method and device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2006-111786A 2006.04.27 |
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