CN101907222B - Gas boosting recovery device based on active carbon adsorber - Google Patents
Gas boosting recovery device based on active carbon adsorber Download PDFInfo
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- CN101907222B CN101907222B CN2010102450705A CN201010245070A CN101907222B CN 101907222 B CN101907222 B CN 101907222B CN 2010102450705 A CN2010102450705 A CN 2010102450705A CN 201010245070 A CN201010245070 A CN 201010245070A CN 101907222 B CN101907222 B CN 101907222B
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- steel cylinder
- carbon adsorber
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Abstract
The invention relates to a gas boosting recovery device based on an active carbon adsorber, belonging to the technical field of gas storage. The gas boosting recovery device comprises a gas source steel cylinder, a target steel cylinder, the active carbon adsorber, a four-way valve, micro internal volume valves, an internal conduction pipe, a KF connector, a capillary flexible stainless steel tube and a pressure gage, wherein one ends of the gas source steel cylinder, the target steel cylinder, the KF connector and the capillary flexible stainless steel tube are respectively connected with four ports of the four-way valve through the four micro internal volume valves; the other end of the capillary flexible stainless steel tube is connected with the internal conduction pipe; and the internal conduction pipe is arranged in the active carbon adsorber. By using liquid nitrogen (77K) or liquid nitrogen (4.2K) or a small-sized low-temperature refrigerating machine as a low-temperature cold source, the invention realizes a boosting and recycling double-effect device by using a small quantity of specific gases on the basis of the physical adsorption and deabsorption of active carbon on the gases and a low-temperature cooling technology.
Description
Technical field
What the present invention relates to is a kind of device of atmosphere storage technical field, specifically is a kind of gas boosting recovery device based on active carbon adsorber.
Background technique
Often need study or require to fill certain gas to the physical behavio(u)r characteristic of a small amount of special gas own in high-end scientific experiment and the industry equipment turns round under the specified pressure condition as the apparatus of working medium.In view of reasons such as the preciousness property of this type gas, non-renewable, high-cleanness, high requirement, toxicity, corrosivity and environmental pollution property, must utilize a kind of rational mechanism to realize the supercharging of gas, reach the purpose of recycled for multiple times and recovery simultaneously.Can supply the technology and equipment of supercharging very extensive on the market; Yet they otherwise easily gaseous sample or working medium are caused pollution (such as oil lubricating compressor) to a certain degree; Must compress a large amount of gases just meaningful (such as air compressor) thereby inner chamber scavenging volume is huge; Give vent to anger and air inlet pressure ratio too small (like diaphragm pump), can't satisfy the technical characteristics requirement of high-cleanness, high, small volume amount and high pressure ratio in a word.In addition, gas from steel cylinder discharge charge into work system after, if run into work system fault and dismounting maintenance, this portion gas must be drained to environment, has not only caused the wasting of resources but also might befouling environment.Formation of the present invention be derived from the scientific research process to the supercharging of helium-3 gas (1.2 ten thousand yuan/mark rises) with reclaim purpose; At thermophysical property (PVT, the specific heat of measuring this very special and expensive rare gas of helium-3; Thermal conductivity etc.) and to carry out with helium-3 be Cryo Refrigerator when test of working medium; The original-pack steel cylinder initial pressure of commercialization helium-3 is low excessively, is about 0.5MPa.Measuring system requires in (1～5MPa) time operation of higher pressure on the one hand; Because helium-3 gas belongs to rare resources, require to reclaim and reuse on the other hand.
Through the retrieval of existing technology is found, notice of authorization number is exported by the high pressure hydrogen delivery line after utilizing hydrogen storage material to the characterization of adsorption realization of the hydrogen hydrogen supercharging in the low pressure hydrogen delivery pipe for the Chinese patent of CN 2864323Y " small-sized hydrogen supercharging device ".This device has the simple characteristics of compact structure and system equally, but it mainly is confined to the hydrogen supercharging of small flow, and other rare gas are not had effect.Do not relate to the thermomechanics alternating temperature principle that plays an important role, do not consider transfer and recovery function yet gas.
Further retrieval is found, notice of authorization number is used for reclaiming the used inert gas of magnetic materials production process for the Chinese patent of CN 201058270Y " a kind of inert gas recovering device ".Its adsorber only is used to reclaim the gas purpose; Device proper is provided with the engine driven supercharging machine, does not relate to absorption supercharging and thermodynamics method economic benefits and social benefits technology, and step-up ratio is limited, and its cavity volume is bigger, is not suitable for the less precious rare gas of amount of gas, also can't satisfy the present invention to the requirement of cleaning gas property.
Summary of the invention
The present invention is directed to the above-mentioned deficiency that existing technology exists; A kind of gas boosting recovery device based on active carbon adsorber is provided; Based on physical absorption and desorb and the low temperature refrigeration technology of active carbon, realize a small amount of specific gas supercharging and recycle economic benefits and social benefits function to gas.Active carbon mainly adopts cocoanut active charcoal; It has stronger suction-operated to gases such as helium, argon, hydrogen at low temperatures; Descend with progressively raise its adsorptive power of temperature; Utilize the adsorber cooling less of this principle, make it abundant adsorbed gas, be transferred in the adsorber with gas in this low-pressure gas source steel cylinder to the volume that is full of active carbon.This moment, gas was in low-pressure state, closed the tube opening valve that is communicated with the source of the gas steel cylinder.Be communicated with and the same less target gas cylinder (vacuumizing) of volume, adsorber is taken out and to its heating from low temperature environment, active carbon desorption, gas pressure rising target approach gas cylinder is realized the supercharging purpose.Adsorptive process relates to low temperature cold source and cold conduction thereof.Low temperature cold source can be liquid nitrogen (77K) or liquid helium (4.2K), and the low more adsorption effect of temperature is obvious more, also can adopt small-sized Cryo Refrigerator (like the G-M refrigerator) to substitute, and realizes the dry type cooling.
The present invention realizes through following technological scheme; The present invention includes: source of the gas steel cylinder, target steel cylinder, active carbon adsorber, four way valve, little inner volume valve, interior guiding tube, KF joint, the flexible Stainless Steel Tube of capillary and pressure gauge; Wherein: an end of the flexible Stainless Steel Tube of source of the gas steel cylinder, target steel cylinder, KF joint and capillary is connected on four ports of four way valve through four little inner volume valves respectively; The other end of the flexible Stainless Steel Tube of capillary is connected with interior guiding tube, and interior guiding tube places active carbon adsorber.
The volume of described target steel cylinder is smaller or equal to 1/10 of the volume of source of the gas steel cylinder.
Described active carbon adsorber comprises: interior guiding tube, outer tube, isolating plate, active carbon chamber and active carbon, and wherein: interior guiding tube, isolating plate and active carbon chamber are arranged at outer tube inside successively up and down; Be vacuum between interior guiding tube and the outer tube, the bottom of interior guiding tube penetrates isolating plate and is connected with the active carbon chamber, and active carbon is arranged in the active carbon chamber.
Described active carbon is a cocoanut active charcoal, and the bottom in described active carbon chamber is provided with detachable filling mouth.
Link to each other through the capillary Stainless Steel Tube between all each parts in the described gas boosting recovery device.
The present invention can realize the ideal theoretical compression ratio of about 10 times of all kinds of gases such as helium-3, helium-4, neon, krypton, xenon, deuterium, chlorine, fluorine, can carry out utilization of step pressure and recovery to gas simultaneously.This device is realized simple, and fabricating cost is low, and gas is in the clean seal container all the time, can guarantee that gas is not contaminated, avoids gas loss.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Elaborate in the face of embodiments of the invention down, present embodiment provided detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technological scheme of the present invention.
As shown in Figure 1; Present embodiment comprises: source of the gas steel cylinder 1, target steel cylinder 2, active carbon adsorber 4, four-way valve 5, pressure regulator valve 6, first to fourth little inner volume valve 7-10 of band pressure-display, interior guiding tube 11, KF joint 12, the flexible Stainless Steel Tube 13 of capillary and pressure gauge 14; Wherein: first port of four-way valve 5 connects the source of the gas steel cylinder 1 that has pressure regulator valve 6 through little inner volume valve 7; Second port of four-way valve 5 is provided with the KF joint behind little inner volume valve 8; Be used to connect the vacuum unit; The 3rd port of four-way valve 5 connects target container 2 via little inner volume valve 9, and the 4th port of four-way valve 5 is connected to active carbon adsorber 4 through little inner volume valve 10 through flexible capillary Stainless Steel Tube 13.
The volume of described target steel cylinder 2 select the source of the gas steel cylinder volume 1/10 to realize 10 times of superchargings.
Described active carbon adsorber 4 comprises: interior guiding tube 11, outer tube 15, isolating plate 16 and active carbon chamber 17 and active carbon 18; Wherein: interior guiding tube 11 is provided with up and down with active carbon chamber 17; Separate with isolating plate 16, and be positioned at outer tube 15 inside, form vacuum chamber between interior guiding tube 11 and the outer tube 15; Active carbon 18 is arranged in the active carbon chamber 17, and interior guiding tube 11 is connected with active carbon chamber 17.
The external diameter of described outer tube 15 is Φ 16mm;
Described active carbon 18 is a cocoanut active charcoal, and the bottom in described active carbon chamber 17 is provided with detachable filling mouth 19.
The working principle of this supercharging device is that at first the open vacuum pump carries the pressure regulating valve except that cutting out the source of the gas steel cylinder, opens all valves, and whole system is vacuumized.Wait to reach 10
-3After the above order of magnitude degree of vacuum of Pa; Throttle down 8 and 9 promptly breaks off the target gas cylinder and vacuumizes a port, opens pressure regulator valve 6 and little inner volume valve 7; Discharge the gas in the source of the gas steel cylinder 1, simultaneously with active carbon adsorber be placed into liquid helium bathe in or on the small-sized cryogenic refrigeration cold head of identical warm area.At this moment, the active carbon in the active carbon adsorber begins gas is adsorbed in a large number.On the other hand, active carbon adsorber itself is under the low temperature, and internal system is an isobaric system.Two aspect reasons make the gas in the source of the gas steel cylinder 1 be transferred to fully basically in the active carbon adsorber, and equipment such as available electric drier heats the source of the gas steel cylinder in case of necessity.Pressure gauge 14 should be indicated the degree of vacuum reading, can judge the situation that internal gas is adsorbed and shifts thus.After manometric pointer tended towards stability, throttle down 7 was accomplished in absorption transfer work basically.Then active carbon adsorber is taken out from helium is bathed and place under the room temperature or stop refrigerator work even heat, because temperature has raise, active carbon begins desorption gas.Open valve 9; Gas in the active carbon adsorber is caused pressure to raise owing to constantly desorbing; And active carbon adsorber inner space itself is very little and be filled with active carbon, so gas can flow in the target steel cylinder 2 of vacuum originally continually, and the target gas cylinder is immersed in the liquid nitrogen bath; Make gas further shift to the target gas cylinder, finally reach pressure balance from active carbon adsorber.Can carry out degree through this process of total indicator reading judgement of pressure gauge 14 equally.Through desorb with to the subcooled double action of target gas cylinder, the gas in the active carbon adsorber all moves to the target steel cylinder more than 99%.Cut-off valve 9, with target gas cylinder rewarming to normal temperature.Through above process, the volume-diminished of gas is about 10 times, about 10 times of the corresponding increase of its pressure.And the capillary Stainless Steel Tube because bore below Φ 0.2mm, the volume that occupies is very little, can ignore.
The implementation that this device is used for pressure adjusting, recycle and recovery is: when target gas cylinder desired gas pressure is not high; Open valve 9 and 10 slightly; Because the pressure of target steel cylinder is higher; Gas partly turns back in the active carbon adsorber, through pressure gauge 14, obtains the required pressure of target gas cylinder.So cycling realizes the cascade utilization of gas pressure.Excessive residual gas is not discharged into atmosphere, but still is collected in the active carbon adsorber.After gas treatment finishes with use, again active carbon adsorber is positioned in the bath of low temperature helium, its interior active carbon is the inner all gas of adsorption system again; Throttle down 9 after finishing is opened valve 6 and 7, simultaneously active carbon adsorber is returned to room temperature even heating; Active carbon desorption attaches, and simultaneously the target gas cylinder is placed liquid nitrogen environment, and gas is got back in the target gas cylinder again; What lose only is in tube opening and active carbon adsorber, and nubbin is fair less than 1%.Gas Recovery is utilized for being vital as this type of helium-3 gas that prices are rather stiff again.
Claims (5)
1. gas boosting recovery device based on active carbon adsorber; Comprise: the flexible Stainless Steel Tube of source of the gas steel cylinder, target steel cylinder, active carbon adsorber, four way valve, little inner volume valve, interior guiding tube, KF joint and capillary; It is characterized in that: an end of the flexible Stainless Steel Tube of source of the gas steel cylinder, target steel cylinder, KF joint and capillary is connected on four ports of four way valve through four little inner volume valves respectively; The other end of the flexible Stainless Steel Tube of capillary is connected with interior guiding tube, and interior guiding tube places active carbon adsorber.
2. the gas boosting recovery device based on active carbon adsorber according to claim 1 is characterized in that, the volume of described target steel cylinder is smaller or equal to 1/10 of the volume of source of the gas steel cylinder.
3. the gas boosting recovery device based on active carbon adsorber according to claim 1; It is characterized in that; Described active carbon adsorber comprises: interior guiding tube, outer tube, isolating plate, active carbon chamber and active carbon, and wherein: interior guiding tube, isolating plate and active carbon chamber are arranged at outer tube inside successively up and down, are vacuum between interior guiding tube and the outer tube; The bottom of interior guiding tube penetrates isolating plate and is connected with the active carbon chamber, and active carbon is arranged in the active carbon chamber.
4. the gas boosting recovery device based on active carbon adsorber according to claim 3 is characterized in that, described active carbon is a cocoanut active charcoal.
5. the gas boosting recovery device based on active carbon adsorber according to claim 3 is characterized in that, the bottom in described active carbon chamber is provided with detachable filling mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010102450705A CN101907222B (en) | 2010-08-05 | 2010-08-05 | Gas boosting recovery device based on active carbon adsorber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102450705A CN101907222B (en) | 2010-08-05 | 2010-08-05 | Gas boosting recovery device based on active carbon adsorber |
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| CN101907222A CN101907222A (en) | 2010-12-08 |
| CN101907222B true CN101907222B (en) | 2012-01-04 |
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| CN2010102450705A Expired - Fee Related CN101907222B (en) | 2010-08-05 | 2010-08-05 | Gas boosting recovery device based on active carbon adsorber |
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| CN111022907A (en) * | 2019-12-17 | 2020-04-17 | 常州市旭如安金属材料科技有限公司 | LNG vehicle-mounted gas cylinder supercharging device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004223469A (en) * | 2003-01-27 | 2004-08-12 | Fuji Electric Systems Co Ltd | Method for regenerating activated carbon containing organic harmful substance and regenerating apparatus |
| CN101000206A (en) * | 2006-01-10 | 2007-07-18 | 高志凯 | Compression gas afterheat regeneration drying process without gas consumption |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1082509A (en) * | 1992-08-21 | 1994-02-23 | 无锡新苑集团公司 | The method of hydrogen recovery by variable-pressure absorption low temperature separation |
| US7780764B2 (en) * | 2008-06-27 | 2010-08-24 | Praxair Technology, Inc. | Methods and systems for helium recovery |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004223469A (en) * | 2003-01-27 | 2004-08-12 | Fuji Electric Systems Co Ltd | Method for regenerating activated carbon containing organic harmful substance and regenerating apparatus |
| CN101000206A (en) * | 2006-01-10 | 2007-07-18 | 高志凯 | Compression gas afterheat regeneration drying process without gas consumption |
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