CN209093057U - A kind of device of the collecting oxygen from compressed air - Google Patents
A kind of device of the collecting oxygen from compressed air Download PDFInfo
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- CN209093057U CN209093057U CN201821740392.5U CN201821740392U CN209093057U CN 209093057 U CN209093057 U CN 209093057U CN 201821740392 U CN201821740392 U CN 201821740392U CN 209093057 U CN209093057 U CN 209093057U
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Abstract
The utility model provides a kind of device of collecting oxygen from compressed air, described device includes gas compressing apparatus, heat-exchanger rig and membrane separation device, the heat source entrance of the gas compressing apparatus and heat-exchanger rig is bi-directionally connected composition circulation, the gas compressing apparatus is also connected with the cold source entrance of heat-exchanger rig, the cold source outlet of the heat-exchanger rig is connected with membrane separation device, and the outlet of the membrane separation device obtains remained gas and infiltration gas.The utility model guarantees that the scene of oxygen and compressed air supplies simultaneously, the purposes without influencing original compressed air by coupling membrane separation device on the basis of original compressed air air supply system come inexpensive collecting oxygen；Compressed air thermal energy is sufficiently recycled simultaneously, and for carrying out the preheating of UF membrane gas, separating area needed for effectively reducing membrane separation device reduces equipment manufacturing cost, has a extensive future.
Description
Technical field
The utility model belongs to gas separation and beneficiation technologies field, is related to a kind of dress of collecting oxygen from compressed air
It sets.
Background technique
Contain about 21% oxygen and 78% nitrogen in air, it is oxygen-enriched to refer to Applied Physics or chemical method by air
In oxygen be collected, make oxygen content >=21% after collected in gas, oxygen-enriched is widely used, be related to petrochemical industry, chemical industry,
The fields such as medicine, light industry, electric power, building materials, metallurgy, coal, communications and transportation, aquaculture and defense military, for example, being applied to each
Combustion-supporting and energy-savings and the environment protection fields such as kind kiln, boiler, heating furnace, incinerator, hot Media Oven, hot-blast stove, smelting furnace, engine, are urged
Change the fields such as cracking, desulfurization, wastewater treatment, engine synergy, oxygen-enriched gas making, oxidation reaction, fermentation, health care, large-scale richness
Oxygen ventilation, plateau oxygenation, aquaculture etc., with the continuous development of oxygen enrichment technology, are increasingly becoming the base of green energy resource
One of plinth.
It is extracted in oxygen-enriched method using air as raw material, industrial most widely used method is cryogenic rectification method and change
Absorption method is pressed, but the oxygen enrichment system of both methods building has investment greatly, energy consumption is high, and technology is complicated, and need special messenger to operate, and
The higher problem of operating cost；In addition, there are also the oxygen separation methods such as electrolysis method, chemical method, but because of it to consume water, disappear
The drawbacks of consumption chemicals raw material realizes oxygen separation, and there are the aspect such as energy consumption height, manufacturing cost height, use cost height,
It is industrially difficult to large-scale application, is only applicable to some special occasions.
Membrane oxygen enrichment technology is a kind of new separation method having gradually developed from late 1970s, using organic high
Molecule dense film is to the selective penetrated property difference of nitrogen, oxygen, and when film two sides are there are when pressure difference, infiltration rate is fast in mixed gas
Gas such as water vapour, hydrogen, helium, oxygen, carbon dioxide become oxygen-enriched air in the low pressure lateral enrichment of film through after film
(different depending on the oxygen nitrogen separation of membrane material, it is about the oxygen-enriched of 23-60% that single-stage, which separates and can get purity), and infiltration rate phase
Slow gas such as nitrogen, argon gas, methane and carbon monoxide etc. is enriched in the delay side of film as oxygen denuded air or nitrogen-rich air,
Membrane separating method is that oxygen-enriched extraction opens a new way, because phase transformation, room temperature separation, tool are not present in separation concentration process
Have equipment is simple, manufacturing cost is low, energy consumption is small, yield is adjusted, it is rapid, easy to operate to start, static system operation, can
Outstanding advantages of high by property is that one kind is economically separated method.
It is led currently, producing oxygen-enriched oxygen-enriched combustion-supporting, oxygen-enriched ventilation, water process etc. of being widely used to using membrane separating method
Domain, especially for the oxygen-enriched combustion-supporting of the Thermal Power Engineering Fields such as glass, metallurgy, cement rotary kiln, Industrial Boiler.CN 103508422
A discloses a kind of can stablize and provides the UF membrane method for supplying oxygen and system of oxygen-enriched purity or oxygen-enriched flow, and the system is existing
Increase a regulating loop in parallel with vacuum pump, the continuous pressure for monitoring vacuum pump inlet on the basis of UF membrane oxygen system
Power is controlled the flow direction of gas by regulating loop, realizes the stable operation of oxygen enrichment system when temperature reduces or increases.However,
With the research and development of separation membrane and the breakthrough of flow process, applied to its oxygen of organic separation membrane of air separation
It is pure can directly to obtain about 30~60% mostly between 2~7 under certain pressure ratio from air for the α value of nitrogen separation
The oxygen of degree, and improve the separation of separation membrane, further decrease separating pressure ratio, improve the cost control such as infiltration capacity
Method has accomplished the limit substantially, more hard to carry on.Many art production process have matched compressed air facility at present, if
It can use existing compressed air and obtain oxygen-enriched, then can improve pressure to avoid air is first compressed, it is rich to greatly reduce acquisition
Collect the cost of oxygen.
In conclusion how to be obtained at low cost on the basis of making full use of existing utility without influencing existing facility operation
Must be oxygen-enriched, it is one of current urgent problem.
Utility model content
In view of the problems of the existing technology, enriched in oxygen that the purpose of this utility model is to provide one kind from compressed air
The device of gas.The utility model is sufficiently by into original compressed air air supply system, utilizing UF membrane oxygen organic coupling
Compressed air resource, low cost acquisition is oxygen-enriched without influencing original specific purposes of compressed air, realizes compressed air and richness
It is supplied while oxygen.
For this purpose, the utility model uses following technical scheme:
On the one hand, the utility model provides a kind of device of collecting oxygen from compressed air, and described device includes gas
Body compression set, heat-exchanger rig and membrane separation device, the two-way company of the heat source entrance of the gas compressing apparatus and heat-exchanger rig
Composition circulation is connect, the gas compressing apparatus is also connected with the cold source entrance of heat-exchanger rig, the cold source outlet of the heat-exchanger rig
It is connected with membrane separation device, the outlet of the membrane separation device obtains remained gas and infiltration gas.
In the utility model, using original compressed air system, then it is aided with UF membrane oxygenerator, it is available oxygen-enriched
Air, and remaining nitrogen-rich air still can be used as compressed gas use, not influence its original purposes；Simultaneously in air compression process
Temperature increases, and can preheat to the gas for entering membrane separation device, reduce the demand of membrane separation device separating area, thus
Reduce apparatus cost.
It is used as the preferred technical solution of the utility model below, but not as the limit of technical solution provided by the utility model
System, by the following technical programs, can preferably reach and realize the technical purpose and beneficial effect of the utility model.
As the preferred technical solution of the utility model, the gas compressing apparatus is divided into two parts, and a part includes the
One entrance and first outlet, another part include second entrance and second outlet, the first outlet of the gas compressing apparatus with
The thermal source inlet of heat-exchanger rig is connected, and the second entrance of the gas compressing apparatus is connected with the thermal source outlet of heat-exchanger rig, institute
The second outlet for stating gas compressing apparatus is connected with the cold source entrance of heat-exchanger rig.
In the utility model, temperature can be increased after air compression, it usually needs and gas temperature is lowered and is exported again,
And during transportation, temperature can also further decrease, and be unfavorable for the operation of membrane separating process, therefore the utility model will be pressed just
The air of contracting goes heating that will enter the compressed air of membrane separation device as heat source, realizes the space of compressed air self heat
Transfer and inner utilization.
Preferably, the gas compressing apparatus includes piston compressor, centrifugal compressor, screw compressor, whirlpool
Any one in rotary compressor, Roots Compressor or liquid-piston compressor.
As the preferred technical solution of the utility model, separation membrane, the film point are loaded in the membrane separation device
Membrane separation device is divided into feed side and per-meate side from material, the feed side is equipped with unstripped gas entrance and remained gas exports, and seeps
Saturating side, which is equipped with, seeps vent outlet.
In the utility model, each membrane separation device includes at least a unstripped gas entrance, a remained gas outlet and one
A infiltration vent outlet, the separation membrane in membrane separation device are classified as two sides, and side is that positive pressure is surveyed, and side is suction side,
The former is the feed side of membrane separation device, also referred to as high-pressure side, delay gas side, and the latter is then the per-meate side of membrane separation device,
Also referred to as low-pressure side.
The performance of separation membrane is usually measured with separation, is oxygen nitrogen separation, one in the utility model
As is defined as: oxygen nitrogen gas selectivity α=QN2/QO2, wherein QN2And QO2Respectively under unit time, pressure, pure component nitrogen and oxygen
The infiltration capacity that gas passes through specific membrane material.
For the membrane separating process of the separating oxygen enrichment from air, it is however generally that, the purity and film point of UF membrane oxygen producing
Oxygen nitrogen separation (referred to as α value), gas from material (are claimed by the absolute pressure ratio of membrane separation device high-pressure side and low-pressure side
For separating pressure ratio) and the ratio between unstripped gas and oxygen enriched product gas (referred to as empty oxygen ratio) it is related.Oxygen nitrogen separation is higher, meaning
The oxygen rich gas of higher purity can be isolated than under in lower separating pressure ratio and smaller empty oxygen, for identical film
Separation material, separating pressure ratio is higher, can obtain the oxygen-enriched of higher purity, and empty oxygen ratio is bigger, can obtain higher purity
It is oxygen-enriched；And on the other hand, UF membrane produces the oxygen-enriched flow i.e. infiltration capacity of separation membrane, mainly with the temperature of unstrpped gas
And pressure is related, for identical separation membrane, separation temperature is higher, and infiltration capacity is bigger, and separating pressure is higher, infiltration capacity
It is bigger.
Preferably, the membrane separation device includes board-like membrane separator, rolling diaphragm separator or hollow fiber membrane separator
In any one, preferably hollow-fibre membrane.
As the preferred technical solution of the utility model, described device further includes air pretreatment system, the system
Entrance is connected with the second outlet of gas compressing apparatus, and the outlet of the system is connected with the cold source entrance of heat-exchanger rig.
Preferably, the system comprises filter devices and the second heat-exchanger rig.
In the utility model, the setting of air pretreatment system can be retained the corpuscular property impurity contained in gas, such as
The drops such as dust, biggish water, oil avoid it from entering later separation device；Wherein the second heat-exchanger rig is empty for the compression that exchanges heat
Compressed air is cooled down and removes condensed water, the oil etc. wherein carried secretly by the thermal energy that gas has.
Preferably, the filter device is at least one, such as one, two, three or four etc., it is not limited to
Cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable, and preferably three.
Preferably, second heat-exchanger rig is arranged at after first filter device.
Preferably, the filter device includes any one in fiber type filter, filtrate formula filter or bag filter
Kind or at least two combination, the combination is typical but non-limiting example has: fiber type filter and filtrate formula filter
Combination, the combination of filtrate formula filter and bag filter, the group of fiber type filter, filtrate formula filter and bag filter
Close etc..
As the preferred technical solution of the utility model, described device further includes gas compression compensation device, the gas
Compression compensation device is set side by side with membrane separation device, the outlet of the gas compression compensation device and the delay of membrane separation device
Gas outlet is connected to same pipeline.
In the utility model, when providing oxygen-enriched using above-mentioned apparatus, if oxygen-enriched dosage is larger, compressed air confession will lead to
To underfed, at this point, spare compressed air compensation circuit, which can be used, carries out flow-compensated, to generate with membrane separation device rich nitrogen
The compressed air generated with gas compression compensation device meets the needs of former compressed air jointly, until not influencing original compressed air
Specific support mission；And the oxygen-enriched of membrane separation device generation can be supplied to the occasions such as oxygen-enriched combusting, oxygen-enriched vaporization, oxygen-enriched ventilation,
The effect for changing oxygen with compressed air is generally realized, the energy consumption of oxygen extraction is greatly reduced.
Preferably, the gas compression compensation device includes piston compressor, centrifugal compressor, screw-compression
Any one in machine, scroll compressor, Roots Compressor or liquid-piston compressor.
On the other hand, the utility model provide it is a kind of using above-mentioned apparatus from compressed air collecting oxygen method,
The described method includes: raw air carries out heat exchange processing after compression, then UF membrane is carried out, obtains oxygen-enriched air and rich nitrogen is empty
Gas.
As the preferred technical solution of the utility model, heat source after air compression as heat-exchanger rig, after return
Heat-exchanger rig is entered back into as cold source.
Preferably, the UF membrane carries out in membrane separation device.
Preferably, it is 45~80 DEG C that compressed air, which enters the temperature of membrane separation device, such as 45 DEG C, 50 DEG C, 55 DEG C, 60
DEG C, 65 DEG C, 70 DEG C, 75 DEG C or 80 DEG C etc., it is not limited to cited numerical value, other unlisted numbers in the numberical range
It is worth equally applicable.
In the utility model, the thermal energy that air generates when compressing, the air for entering membrane separation device is preheated, and is led to
This energy regenerating is crossed using process, the air themperature for entering membrane separation device is improved, the separation of separation membrane is effectively reduced
It is negative to membrane separation device normal operation bring because dew-point temperature changes generation moisture condensation to eliminate most area for area requirements
It influences.
Preferably, in the membrane separation device pressure ratio of feed side and per-meate side be 4~14, such as 4,5,6,8,10,
12 or 14 etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
Preferably, the feed side of the membrane separation device obtains nitrogen-rich air, and per-meate side obtains oxygen-enriched air.
In the utility model, when carrying out the separation of oxygen nitrogen using membrane separation device, to improve separative efficiency, cost is reduced, it can
The separating pressure ratio of film two sides is improved, and this process is obviously limited by the pressure of matched compressed air.When use α value for 5
It is 30~60% or so in required oxygen-enriched purity when the hollow fiber membrane separator that~7 separation membrane is made into is separated
When, about needing the separating pressure ratio for establishing skinning two sides is 4 or more, and if the high side pressure of film is 300~1300kPa, absolute pressure is
Atmospheric pressure (101.325kPa)+(300~1300kPa), and low-pressure side only needs to keep atmospheric pressure discharge, in this way, separating pressure ratio
For [101.325kPa+ (300~1300kPa)] 4~14 times of/101.325kPa ≈, about 30~60% oxygen-enriched purity can get.
As the preferred technical solution of the utility model, compressed air is first pre-processed before entering heat-exchanger rig.
Preferably, the pretreatment includes filtration treatment and condensation process.
As the preferred technical solution of the utility model, when the nitrogen-rich air insufficient supply, supplement compressed air is also needed.
Preferably, the compressed air is supplemented by gas compression compensation device.
As the preferred technical solution of the utility model, which comprises raw air is first compressed, then conduct
The heat source of heat-exchanger rig carries out filtration treatment and condensation process, enters back into heat-exchanger rig as cold source and be heated to 45 after return
~80 DEG C enter membrane separation device and carry out UF membrane, and the pressure ratio of two sides is 4~14 in membrane separation device, the original of membrane separation device
Material side obtains nitrogen-rich air, and per-meate side obtains oxygen-enriched air, when nitrogen-rich air insufficient supply, also needs to compensate by gas compression and fills
Set supplement compressed air.
In the utility model, the method is in addition to the separation for oxygen/nitrogen, according to the difference of separation membrane, together
Sample can be adapted for gas dry, the separation of carbon dioxide/methane, the separation of titanium dioxide carbon/nitrogen gas, the separation of hydrogen/nitrogen
The common separation process with the separation of olefin/paraffin etc..
Compared with prior art, the utility model has the following beneficial effects:
(1) the utility model is by coupling membrane separation device on the basis of original compressed air air supply system come enriched in oxygen
Gas guarantees that the scene of oxygen and compressed air supplies simultaneously, the purposes without influencing original compressed air；
(2) the utility model sufficiently recycles compressed air thermal energy, and combines with membrane separation process, reduces membrane separation device
The demand of separating area, reduces equipment manufacturing cost；
(3) the utility model oxic process operating cost is lower, and stability is strong, and oxygen-enriched efficiency significantly improves, oxygen-enriched air
Middle oxygen purity can reach 28% or more.
Detailed description of the invention
Fig. 1 is the structure connection figure of collecting oxygen device in the slave compressed air of the offer of the utility model embodiment 1；
Wherein, AB01- gas compressing apparatus, the first filter device of AF01-, the second heat-exchanger rig of TC01-, AF02- second
Filter device, AF03- third filter device, TC02- heat-exchanger rig, M01- membrane separation device, AB02- gas compression compensation dress
It sets, the unstripped gas entrance of A0- membrane separation device, the remained gas outlet of A1- membrane separation device, the infiltration gas of A2- membrane separation device
Outlet.
Specific embodiment
For the utility model is better described, it is easy to understand the technical solution of the utility model, with reference to the accompanying drawing to this
Utility model is further described with specific embodiment.But following embodiments is only the simple example of the utility model
Son, does not represent or limits the rights protection scope of the utility model, and scope of protection of the utility model is subject to claims.
Specific embodiment of the present invention part provides a kind of device of collecting oxygen from compressed air, the dress
It sets including gas compressing apparatus AB01, heat-exchanger rig TC02 and membrane separation device M01, the gas compressing apparatus AB01 and heat exchange
The heat source entrance of device TC02 is bi-directionally connected composition circulation, and the gas compressing apparatus AB01 is also cold with heat-exchanger rig TC02
Source inlet is connected, and the cold source outlet of the heat-exchanger rig TC02 is connected with membrane separation device M01, the membrane separation device M01's
Outlet obtains remained gas and infiltration gas.
The typical but non-limiting embodiment the following are the utility model:
Embodiment 1:
A kind of device of collecting oxygen from compressed air is present embodiments provided, the structure connection figure of described device is as schemed
Shown in 1, including gas compressing apparatus AB01, heat-exchanger rig TC02 and membrane separation device M01, the gas compressing apparatus AB01 with
The heat source entrance of heat-exchanger rig TC02 be bi-directionally connected composition circulation, the gas compressing apparatus AB01 also with heat-exchanger rig TC02
Cold source entrance be connected, the outlet of the cold source of the heat-exchanger rig TC02 is connected with membrane separation device M01, the membrane separation device
The outlet of M01 obtains remained gas and infiltration gas.
Wherein, the gas compressing apparatus AB01 points are two parts, and a part includes first entrance and first outlet, another
Part includes second entrance and second outlet, the first outlet and the heat source of heat-exchanger rig TC02 of the gas compressing apparatus AB01
Entrance is connected, and the second entrance of the gas compressing apparatus AB01 is connected with the thermal source outlet of heat-exchanger rig TC02, the gas
The second outlet of compression set AB01 is connected with the cold source entrance of heat-exchanger rig TC02.
Separation membrane is loaded in the membrane separation device M01, membrane separation device is divided into raw material by the separation membrane
Side and per-meate side, the feed side is equipped with unstripped gas entrance A0 and remained gas exports A1, and per-meate side, which is equipped with, seeps vent outlet A2.
Described device further includes air pretreatment system, and the entrance of the system goes out with the second of gas compressing apparatus AB01
Mouth is connected, and the outlet of the system is connected with the cold source entrance of heat-exchanger rig TC02；The system comprises sequentially connected first
Filter device AF01, the second heat-exchanger rig TC01, the second filter device AF02 and third filter device AF03.
Described device further includes gas compression compensation device AB02, and the gas compression compensation device AB02 and UF membrane fill
It sets M01 to be set side by side, the outlet of the gas compression compensation device AB02 is connect with the remained gas of membrane separation device M01 outlet A1
To same pipeline.
Described device is coupling membrane separation device M01, carrying out practically process on the basis of former compressed air air supply system
It is as follows:
Wherein, A is gas compressing apparatus AB01 to gas transmission pipeline net work access point, and B is compressed air gas transmission pipeline net work to compressing sky
Gas gas point interface, C are the aggregation points of membrane separation device M01 richness nitrogen outlet and gas compression compensation device AB02, and D is UF membrane
The oxygen-enriched outlet device M01 is mixed into a mouthful aggregation point with air；
At the scene after original matched compressed air system, gas transmission pipeline net work between access point A and B, setting is manual
Stop valve and/or automatic stop valve, when needing scene oxygen supply, the circulation of A-B is cut off, and compressed air is along A-C-B route
Circulation, it is oxygen-enriched then to export from D point through membrane separation device M01 through sucking atmosphere blending to ensure the demand of compressed air gas point
Output is required target oxygen-enriched air afterwards；
In the gas supply branch of A-C-B, it is also provided with hand off valve and/or automatic stop valve, while air is set and is located in advance
Reason system, wherein the corpuscular property impurity in filter device removal gas, the second heat-exchanger rig TC01 remove compressed air cooling
Condensed water, oil for wherein carrying secretly etc. are preheated before then continuing separator after entering, i.e. connection heat-exchanger rig TC02, should
The heat source of device is the thermal energy of compressed air in gas compressing apparatus AB01, and the recycling of realization device self-energy is passed through later
Stop valve and check valve is arranged from remained gas outlet A1 discharge in membrane separation device M01, nitrogen-rich gas between node C, using
Stop valve between node C and B supplies former compressed air gas point；Oxygen rich gas is from vent outlet A2 output is seeped, through node D, with
And the regulating valve of setting introduces air, is sent into oxygen-enriched air gas point from node D after blending to target oxygen-rich concentration；
When oxygen-enriched dosage influences compressed air supply in use, compensating pressure by gas compression compensation device AB02
Contracting air connects check valve and carrys out access node C, supplies jointly to former compressed air gas point with nitrogen-rich gas.
Embodiment 2:
A kind of method for present embodiments providing collecting oxygen from compressed air, the method is using in embodiment 1
Device carries out, specific application environment are as follows:
Certain cement plant, mating flow are about 340m3/ min, the compressed air system that outlet pressure is 1.0MPa, predominantly
The demands such as deashing, block clearing are improved with gas point normal use pressure about 0.6MPa using the device in embodiment 1 for compressed air
Existing compressed air system makes scene while supplying compressed air and oxygen-enriched, and compressed air meets the use pressure of above-mentioned 0.6MPa
Power demand, to component no requirement (NR), oxygen is then used for the cement plant and carries out oxygen-enriched combusting.
Membrane separation device used is the production of Shanghai Sui Shan Industry Co., Ltd in the present embodimentFilm
Separator, separation of used oxygen nitrogen separation membrane material under the conditions of 50 DEG C are 6.35, membrane separator design work
Pressure is 0.8MPa, and UF membrane pressure loss about 0.06MPa itself, design work temperature is 50 DEG C,UF membrane
The empty oxygen ratio about 2.7 of device separation.
Use the membrane separator separation flow for 340m3The compressed air of/min, can be obtained purity be 45% it is oxygen-enriched
Air 7556m3/ h implements oxygen-enriched combustion-supporting to kiln with target oxygen-enriched purity 28% after dilution air, forms about 25776m3/h、
For the oxygen-enriched air of purity 28% to replace the net wind of kiln hood, coal wind, oxygen-enriched combustion-supporting achieves about 8% coal saving rate；Meanwhile it is remaining
The flow of nitrogen-rich air is still 214m3/ min meets the needs of former compressed air purging, block clearing.
In addition, compensating 7556m according to gas compression compensation device AB023The compressed air of/h, it is only necessary to consumption about 500kW
Power, and individually produce 45% oxygen-enriched air 7556m3/ h, is equal to 2522m3/ h, 93% oxygen mix 5034m3/h
Air, using pressure swing absorption process produce identical scale it is oxygen-enriched when, every cube it is oxygen-enriched usually require 1.1kW power, always
Electrical power be about 2774.2kW, along with power consumption needed for air distribution, be much larger than 500kW.
In the present embodiment, heat-exchanger rig TC02 is introduced by the thermal energy of live compressed air, so that into membrane separator M01
Gas meet 50 DEG C of separation temperature, the quantity of required membrane separator is 98.By oxygen-enriched combustion-supporting, the coal in cement plant makes
With reduction, reach 8% coal saving rate, remarkable in economical benefits.
Comparative example 1:
This comparative example provides a kind of device and method of collecting oxygen from compressed air, and described device is referring to embodiment
Device in 1, difference are only that: not including heat-exchanger rig TC02.
The method is referring to the method in embodiment 2, difference: compressed air thermal energy is not to entering membrane separator
The compressed air of M01 is preheated.
In this comparative example, the compressed air temperature into membrane separator M01 is 25 DEG C, at this time point of oxygen nitrogen separation membrane material
It is not much different from coefficient for the separation under the conditions of 6.5, with 50 DEG C, not too much influence separating property, but under the conditions of its 25 DEG C
Infiltration capacity differ 1.38 times under the conditions of 50 DEG C, to reach identical oxygen-enriched fractional dose, the quantity of required membrane separator
Increasing is 136, and compared with Example 2, the cost of equipment greatly improves, while the operation stability of device is poor.
Based on the above embodiments with comparative example it can be concluded that, the utility model passes through in original compressed air air supply system
On the basis of couple the inexpensive collecting oxygen of membrane separation device, guarantee that the scene of oxygen and compressed air supplies simultaneously, without shadow
Ring the purposes of original compressed air；Sufficiently recycling compressed air thermal energy effectively subtracts for carrying out the preheating of UF membrane gas simultaneously
Separating area needed for few membrane separation device reduces equipment manufacturing cost, and gained is oxygen-enriched to be used as combustion adjuvant, oxidant etc., using neck
Domain is extensive.
The Applicant declares that the utility model illustrates the detailed device of the utility model, but this reality through the foregoing embodiment
It is not limited to above-mentioned detailed device with novel, that is, it is real not mean that the utility model must rely on above-mentioned detailed device ability
It applies.It should be clear to those skilled in the art, any improvement to the utility model, to utility model device etc.
Effect replacement and addition, the selection of concrete mode of auxiliary device etc., all fall within the protection scope of the utility model and the open scope
Within.
Claims (10)
1. a kind of device of the collecting oxygen from compressed air, which is characterized in that described device includes gas compressing apparatus, heat exchange
The heat source entrance of device and membrane separation device, the gas compressing apparatus and heat-exchanger rig is bi-directionally connected composition circulation, described
Gas compressing apparatus is also connected with the cold source entrance of heat-exchanger rig, cold source outlet and the membrane separation device phase of the heat-exchanger rig
Even, the outlet of the membrane separation device obtains remained gas and infiltration gas.
2. the apparatus according to claim 1, which is characterized in that the gas compressing apparatus is divided into two parts, a part packet
First entrance and first outlet are included, another part includes second entrance and second outlet, and the first of the gas compressing apparatus goes out
Mouth is connected with the thermal source inlet of heat-exchanger rig, the second entrance and the thermal source outlet phase of heat-exchanger rig of the gas compressing apparatus
Even, the second outlet of the gas compressing apparatus is connected with the cold source entrance of heat-exchanger rig.
3. the apparatus according to claim 1, which is characterized in that the gas compressing apparatus include piston compressor, from
Any one in core type compressor, screw compressor, scroll compressor, Roots Compressor or liquid-piston compressor.
4. the apparatus according to claim 1, which is characterized in that separation membrane is loaded in the membrane separation device, it is described
Membrane separation device is divided into feed side and per-meate side by separation membrane, and the feed side is equipped with unstripped gas entrance and remained gas goes out
Mouthful, per-meate side, which is equipped with, seeps vent outlet.
5. the apparatus according to claim 1, which is characterized in that the membrane separation device includes board-like membrane separator, rolling
Any one in membrane separator or hollow fiber membrane separator.
6. the apparatus of claim 2, which is characterized in that described device further includes air pretreatment system, the system
The entrance of system is connected with the second outlet of gas compressing apparatus, and the outlet of the system is connected with the cold source entrance of heat-exchanger rig.
7. device according to claim 6, which is characterized in that the system comprises filter device and the second heat-exchanger rig,
The filter device is at least one, and second heat-exchanger rig is arranged at after first filter device.
8. device according to claim 7, which is characterized in that the filter device includes fiber type filter, filtrate formula
Any one in filter or bag filter or at least two combination.
9. the apparatus according to claim 1, which is characterized in that described device further includes gas compression compensation device, described
Gas compression compensation device is set side by side with membrane separation device, the outlet of the gas compression compensation device and membrane separation device
Remained gas outlet is connected to same pipeline.
10. device according to claim 9, which is characterized in that the gas compression compensation device includes piston type compressed
It is any one in machine, centrifugal compressor, screw compressor, scroll compressor, Roots Compressor or liquid-piston compressor
Kind.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821740392.5U CN209093057U (en) | 2018-10-25 | 2018-10-25 | A kind of device of the collecting oxygen from compressed air |
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| CN201821740392.5U CN209093057U (en) | 2018-10-25 | 2018-10-25 | A kind of device of the collecting oxygen from compressed air |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109173619A (en) * | 2018-10-25 | 2019-01-11 | 上海穗杉实业股份有限公司 | A kind of device and method of the collecting oxygen from compressed air |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109173619A (en) * | 2018-10-25 | 2019-01-11 | 上海穗杉实业股份有限公司 | A kind of device and method of the collecting oxygen from compressed air |
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