CN110237651A - A kind of air separation by PSA nitrogen-making device and method - Google Patents
A kind of air separation by PSA nitrogen-making device and method Download PDFInfo
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- CN110237651A CN110237651A CN201910624220.4A CN201910624220A CN110237651A CN 110237651 A CN110237651 A CN 110237651A CN 201910624220 A CN201910624220 A CN 201910624220A CN 110237651 A CN110237651 A CN 110237651A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000000926 separation method Methods 0.000 title claims abstract description 16
- 238000001179 sorption measurement Methods 0.000 claims abstract description 142
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 128
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 54
- 239000003463 adsorbent Substances 0.000 claims abstract description 33
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 20
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 238000010521 absorption reaction Methods 0.000 claims description 42
- 239000007789 gas Substances 0.000 claims description 31
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 24
- 239000001301 oxygen Substances 0.000 claims description 24
- 229910052760 oxygen Inorganic materials 0.000 claims description 24
- 230000008929 regeneration Effects 0.000 claims description 20
- 238000011069 regeneration method Methods 0.000 claims description 20
- 238000010926 purge Methods 0.000 claims description 12
- 230000003584 silencer Effects 0.000 claims description 12
- 230000000994 depressogenic effect Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims 2
- 239000000843 powder Substances 0.000 abstract description 3
- 239000000428 dust Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
- B01D53/053—Pressure swing adsorption with storage or buffer vessel
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0433—Physical processing only
- C01B21/045—Physical processing only by adsorption in solids
- C01B21/0455—Physical processing only by adsorption in solids characterised by the adsorbent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40086—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by using a purge gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/402—Further details for adsorption processes and devices using two beds
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The present invention relates to nitrogen technical fields processed, and disclose a kind of air separation by PSA nitrogen-making device and method, including the first adsorption tower, the inlet end of first adsorption tower is communicated with the 5th control valve, the 7th control valve and the 9th control valve by pipeline fixation, and the 7th is interconnected between control valve and the 9th control valve by pipeline, the outlet side of first adsorption tower is communicated with the first control valve, third control valve door and manually-operated gate by the way that pipeline is fixed, and the right side of the first control valve is communicated with the second control valve and nitrogen buffer tank by pipeline fixation.The present invention is by using the top-down suction type of adsorption tower air-flow, and in entire cycle operation, air-flow in adsorbent bed moves towards not by top outlet, avoid air-flow from bottom to top caused bed loosening, adsorbent friction powder phenomenon-tion, adsorption tower in the present invention is not necessarily to top pressing device, is suitable for product nitrogen gas purity in 80 ~ 99.9995% ranges.
Description
Technical field
The present invention relates to nitrogen technical field processed more particularly to a kind of air separation by PSA nitrogen-making device and methods.
Background technique
In the prior art, the common technique method of air separation by PSA nitrogen is two adsorption towers that adsorbent is housed, often
Step of the tower in one cycle work are as follows: absorption, equal pressure drop, emptying regeneration, pressure rise.Compressed air is by adsorption tower when absorption
Bottom enters, by top outlet after adsorbent bed；Two tunnels carry out air point up and down when pressing, and top is completed by absorption
It is pressed at the top of the absorption that outlet is completed to regeneration at the top of adsorption tower, bottom is pressed by two absorption tower bottoms in lower part；It puts
Gas is vented by adsorption tower bottom when sky regeneration regenerates.When this technical method is because of absorption and pressure Shi Junyou gas is by top outlet,
And flow velocity is larger, drives adsorbent bed movement, leads to the friction dusting of adsorbent, it must at the top of adsorption tower in this technical method
There must be pressing device.There are there are failures in implementation process in large-scale plant (adsorption tower diameter 2000mm or more) for pressing device
Rate height, performance difficulty easily cause the friction of adsorbent, run leakage situation, cause the subsequent powder pollution used, the peace of line clogging
Full hidden danger.
The patent of invention of Patent No. 200410081282,200410081281 discloses a kind of air separation by PSA system
Nitrogen method.In air adsorption process from top to bottom, adsorbent bed adsorbance also from top to bottom reduces adsorption tower gradually,
So that the nitrogen gas concn in air is improved gradually to product nitrogen gas requirement.But the equal pressure drop of adsorption tower and suitable emptying in its method
Airflow direction is from top to bottom, so that the bed partial regeneration cleanliness of adsorption tower outlet side is low, to be unfavorable for adsorbent again
Secondary absorption, the method nitrogen inefficiency and can not high-purity nitrogen (99.9% or more), in this two patent specifications
Also product nitrogen gas concentration (80 ~ 99.9%) are specifically described.
Summary of the invention
The purpose of the present invention is to solve disadvantage existing in the prior art, as: adsorption tower in existing method for preparing nitrogen
Equal pressure drop and along emptying airflow direction be from top to bottom so that the bed partial regeneration cleanliness of adsorption tower outlet side is low,
Be unfavorable for the absorption again of adsorbent, the method nitrogen inefficiency and can not high-purity nitrogen (99.9% or more), and mention
A kind of air separation by PSA nitrogen-making device and method out.
To achieve the goals above, present invention employs following technical solutions:
The inlet end of a kind of air separation by PSA nitrogen-making device, including the first adsorption tower, first adsorption tower is solid by pipeline
Surely the 5th control valve, the 7th control valve and the 9th control valve, and the 7th control valve and the 9th control valve are communicated with
Between be interconnected by pipeline, the outlet side of first adsorption tower is communicated with the first control valve, the by pipeline fixation
Three control valves and manually-operated gate, and mutually interconnected between the first control valve, third control valve door and manually-operated gate by pipeline
It is logical.
The right side of first control valve is fixed by pipeline and is communicated with the second control valve and nitrogen buffer tank, and the
It is interconnected between one control valve and the second control valve by pipeline, the right side of the third control valve door, manually-operated gate
Right side and the second control valve right side by pipeline fixation be communicated with the second adsorption tower, the third control valve door, hand
It is interconnected between movable valve and the second control valve by pipeline, the inlet end of second adsorption tower connects by the way that pipeline is fixed
It is connected with the 6th control valve, the 8th control valve and the tenth control valve, and between the 8th control valve and the tenth control valve
Be interconnected by pipeline, the left side of the right side of the 9th control valve and the tenth control valve it is fixed be communicated with first into
Tracheae, the right side of the 5th control valve, the left side of the 6th control valve, the right side of the 7th control valve and the 8th control valve
The left side of door is interconnected by pipeline, the right side of the 5th control valve, the left side of the 6th control valve, the 7th control
The right side of valve and the left side of the 8th control valve are communicated with the 4th control valve, the 4th control valve by pipeline fixation
The bottom fixation of door is communicated with muffler.
Preferably, the left side fixation of first air inlet pipe is communicated with filter mechanism.
Preferably, the filter mechanism includes cabinet, and the surface bottom portion of the cabinet is threaded with dust-collecting box, the case
The upper surface of body is fixed to be communicated with the second air inlet pipe, and the bottom of second air inlet pipe through cabinet and extends to the interior of cabinet
Portion, the surface of second air inlet pipe slidably connect slip ring, and the surface of the slip ring is fixedly connected with strainer, the strainer
The inner wall of surface and cabinet is slidably connected, and the upper surface of the slip ring and the bottom of cabinet are fixedly connected to spring, the bullet
The right side opening of the socket of the surface of the inner wall of spring and the second air inlet pipe, the cabinet is equipped with venthole, and the venthole is located at strainer
Top, the surface fixation of the inner wall of the venthole and the first air inlet pipe is connected to.
Preferably, the inner wall of the cabinet is fixedly connected with baffle ring, and the baffle ring is located at the top of strainer, the baffle ring
Inner wall is fixedly connected with close to switch, and the front of the cabinet is fixedly connected with indicator light, the indicator light and close switch electricity
Connection.
Preferably, the induction extreme direction close to switch is downward.
Preferably, the baffle and strainer minimum range are less than distance between the bottom of baffle and the bottom of close switch.
Preferably, the outlet side of second adsorption tower passes through the right side of pipeline and third control valve door, manually-operated gate
The right side fixation of right side and the second control valve be connected to, the inlet end of the nitrogen buffer tank passes through pipeline and first and controls
The right side of valve is connected to the fixation of the left side of the second control valve.
Preferably, a kind of pressure swing absorption method for preparing nitrogen from air:
First adsorption tower absorption one: opening the first control valve, the 4th control valve, the 6th control valve, the 9th control valve,
After raw air is filtered by filter mechanism, the first adsorption tower equipped with adsorbent is entered by nine control valve of the control valve family status
In, oxygen is adsorbed by adsorbent, and the nitrogen gas purity in air improves gradually, and final products nitrogen is passed through by the first absorption tower bottom
The first control valve of control valve is exported to nitrogen buffer tank, for being used with gas.The oxygen being adsorbed in second adsorption tower is by
Six control valves, the 4th control valve, silencer are discharged into atmosphere, while portioned product nitrogen is adsorbed by manually-operated gate to second
Tower carries out purging regeneration.
First adsorption tower absorption two: closing the 6th control valve, opens the 8th control valve, and raw air passes through filter
It after structure filtering, is entered in the first adsorption tower equipped with adsorbent by nine control valve of the control valve family status, oxygen is adsorbed agent suction
Attached, the nitrogen gas purity in air improves gradually, and final products nitrogen is controlled by the first absorption tower bottom by control valve first
Valve is exported to nitrogen buffer tank, for being used with gas.The oxygen being adsorbed in second adsorption tower is by the 8th control valve, the 4th control
Valve processed, silencer are discharged into atmosphere, while portioned product nitrogen carries out purging regeneration to the second adsorption tower by manually-operated gate.
First adsorption tower to the second adsorption tower is pressed: after the completion of the absorption of the first adsorption tower, closing the first control valve, the 4th
Control valve, the 9th control valve open third control valve door, the 5th control valve, two tunnels of gas point in the first adsorption tower
It being depressed into the second adsorption tower, passes through the 5th control valve, the 8th control valve all the way, another way passes through third control valve door,
Recycle the gas in the first adsorption tower.
Second adsorption tower absorption one: after pressing, closing third control valve door, the 8th control valve, opens the second control
Valve processed, the 4th control valve, the tenth control valve are controlled after raw air is filtered by filter mechanism by the control valve family status ten
Valve processed enters in the second adsorption tower equipped with adsorbent, and oxygen is adsorbed by adsorbent, and the nitrogen gas purity in air mentions gradually
Height, final products nitrogen are exported by the second control valve of control valve to nitrogen buffer tank by the second absorption tower bottom, for
Gas uses.The oxygen being adsorbed in second adsorption tower is discharged into atmosphere by the 5th control valve, the 4th control valve, silencer,
Portioned product nitrogen carries out purging regeneration to the first adsorption tower by manually-operated gate simultaneously.
Second adsorption tower absorption two: closing the 5th control valve, opens the 7th control valve, and raw air passes through filter
It after structure filtering, is entered in the second adsorption tower equipped with adsorbent by ten control valve of the control valve family status, oxygen is adsorbed agent suction
Attached, the nitrogen gas purity in air improves gradually, and final products nitrogen is controlled by the second absorption tower bottom by control valve second
Valve is exported to nitrogen buffer tank, for being used with gas.The oxygen being adsorbed in first adsorption tower is by the 7th control valve, the 4th control
Valve processed, silencer are discharged into atmosphere, while portioned product nitrogen carries out purging regeneration to the first adsorption tower by manually-operated gate.
Second adsorption tower to the first adsorption tower, which is inhaled, presses: after the completion of the absorption of the second adsorption tower, closing the second control valve, the
Four control valves, the tenth control valve open third control valve door, the 6th control valve, the gas point two in the second adsorption tower
Road is depressed into the first adsorption tower, passes through the 6th control valve, the 7th control valve all the way, and another way passes through third control valve
Door recycles the gas in the second adsorption tower.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention is inhaled by using the top-down suction type of adsorption tower air-flow, and in the entire cycle operation of adsorption tower
Air-flow trend in attached dose of bed guarantees that the bed of adsorbent is stablized, air-flow is avoided from bottom to top to cause not by top outlet
Bed loosen, adsorbent rub powder phenomenon-tion.Adsorption tower in the present invention is not necessarily to top pressing device, is suitable for product nitrogen gas
Purity is in 80 ~ 99.9995% ranges.
(2) present invention plays a role in filtering to the dust in air by the way that filter mechanism, the strainer in filter mechanism is arranged,
And collect in collection box, it prevents the dust in air from blocking pipeline, when needing to clear up dust, rotates collection box, will collect
Box is separated with cabinet, is cleared up convenient for dust of the operating personnel to collection, meanwhile, when being adsorbed with more dust on strainer
When, air push strainer moves up, and after closing air, spring pushes strainer, so that strainer is generated vibration, will adsorb on strainer
Dust shake.
(3) present invention by setting slip ring, spring, baffle ring, close to switch and indicator light, when filter screen bottom be adsorbed with it is more
Dust after, air push strainer moves up strainer, after strainer is with close to switch contact, by that will refer to close to switch
Show that lamp is opened, whether operating personnel is lighted by viewing lamp, and then judge to adsorb on strainer dust number, convenient for operation
Personnel in time clear up the dust adsorbed on strainer.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the schematic internal view of filter mechanism of the present invention；
Fig. 3 is the front view of filter mechanism of the present invention；
Fig. 4 is the structural schematic diagram of dust-collecting box of the present invention；
Fig. 5 is the structural schematic diagram of strainer of the present invention；
Fig. 6 is the structural schematic diagram of baffle ring of the present invention.
In figure: 1, the first adsorption tower；2, the second adsorption tower；3, muffler；4, nitrogen buffer tank；5, the first air inlet pipe；6,
Filter mechanism；61, cabinet；62, dust-collecting box；63, the second air inlet pipe；64, slip ring；65, strainer；66, spring；67, venthole；7,
Baffle ring；8, close to switch；9, indicator light；10, the first control valve；11, the second control valve；12, third control valve door；13,
4th control valve；14, the 5th control valve；15, the 6th control valve；16, the 7th control valve；17, the 8th control valve；
18, the 9th control valve；19, the tenth control valve；20, manually-operated gate.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore be not considered as limiting the invention.
Referring to Fig.1-6, a kind of air separation by PSA nitrogen-making device, including the first adsorption tower 1, the air inlet of the first adsorption tower 1
End is communicated with the 5th control valve 14, the 7th control valve 16 and the 9th control valve 18, and the 7th control by the way that pipeline is fixed
It is interconnected between valve 16 and the 9th control valve 18 by pipeline, the 5th control valve 14 is located at the right side of the first adsorption tower 1
The outlet side of side, the first adsorption tower 1 is communicated with the first control valve 10, third control valve door 12 and hand-operated valve by pipeline fixation
Door 20, and be interconnected between the first control valve 10, third control valve door 12 and manually-operated gate 20 by pipeline.
The right side of first control valve 10 is communicated with the second control valve 11 and nitrogen buffer tank 4 by pipeline fixation, and
It is interconnected between first control valve 10 and the second control valve 11 by pipeline, the inlet end of nitrogen buffer tank 4 passes through
Pipeline is connected to the right side of the first control valve 10 and the fixation of the left side of the second control valve 11, the right side of third control valve door 12
The right side of side, the right side of manually-operated gate 20 and the second control valve 11 is communicated with the second adsorption tower 2, third by pipeline fixation
It is interconnected between control valve 12, manually-operated gate 20 and the second control valve 11 by pipeline, the outlet side of the second adsorption tower 2
Pass through the fixed company in right side on the right side of pipeline and third control valve door 12, the right side of manually-operated gate 20 and the second control valve 11
Logical, the inlet end of the second adsorption tower 2 is communicated with the 6th control valve 15, the 8th control valve 17 and the tenth control by the way that pipeline is fixed
Valve 19 processed, the 6th control valve 15 are located at the left side of the second adsorption tower 2, and the 8th control valve 17 and the tenth control valve 19
Between be interconnected by pipeline, the left side of the right side of the 9th control valve 18 and the tenth control valve 19 is fixed to be communicated with the
One air inlet pipe 5, the right side of the 5th control valve 14, the left side of the 6th control valve 15, the 7th control valve 16 right side and the
The left side of eight control valves 17 is interconnected by pipeline, the right side of the 5th control valve 14, the 6th control valve 15 a left side
The left side of side, the right side of the 7th control valve 16 and the 8th control valve 17 is communicated with the 4th control valve by pipeline fixation
13, the fixation of the bottom of the 4th control valve 13 is communicated with muffler 3, the cycle operation step of adsorption tower are as follows: absorption, equal pressure drop,
Emptying regeneration, pressure rise.Compressed air is discharged by entering bed, nitrogen at the top of adsorption tower by bottom when absorption；Gas when pressing
Two tunnels progress above and below point, top are pressed from the adsorption tower upper position outlet that absorption is completed to the absorption top of regeneration completion, under
Bottom is pressed by two absorption tower bottoms in portion；Gas is vented by adsorption tower upper position when emptying regeneration regenerates, absorption
When compressed air be discharged by entering bed, product nitrogen gas at the top of adsorption tower by bottom, gas point upper and lower two tunnels when adsorption tower press
It carries out, is pressed at the top of the absorption that top is completed from the adsorption tower upper position outlet that absorption is completed to regeneration, lower part is inhaled by two
Attached tower bottom presses bottom, and gas is vented by adsorption tower upper position when adsorption tower emptying regenerates regenerates.
The left side of first air inlet pipe 5 is fixed to be communicated with filter mechanism 6, and filter mechanism 6 includes cabinet 61, the surface of cabinet 61
Bottom thread is connected with dust-collecting box 62, and the upper surface fixation of cabinet 61 is communicated with the second air inlet pipe 63, the bottom of the second air inlet pipe 63
Portion runs through cabinet 61 and extends to the inside of cabinet 61, and the surface of the second air inlet pipe 63 slidably connects slip ring 64, the second air inlet
Pipe 63 plays guiding role to slip ring 64, and the surface of slip ring 64 is fixedly connected with strainer 65, surface and the cabinet 61 of strainer 65
Inner wall is slidably connected, and the aperture of strainer 65 is 3mm, is played a role in filtering by strainer 65 to the dust in air, slip ring 64
Upper surface and the bottom of cabinet 61 are fixedly connected to spring 66, and spring 66 plays a supporting role to slip ring 64, spring 66 it is interior
The right side opening of the socket of the surface of wall and the second air inlet pipe 63, cabinet 61 is equipped with venthole 67, and venthole 67 is located at the upper of strainer 65
Side, the inner wall of venthole 67 are connected to the fixation of the surface of the first air inlet pipe 5.
The inner wall of cabinet 61 is fixedly connected with baffle ring 7, and baffle ring 7 is located at the top of strainer 65, and the inner wall of baffle ring 7 is fixedly connected
There is close switch 8, will be fixed in cabinet 61 close to switch 8 by baffle ring 7, the front of cabinet 61 is fixedly connected with indicator light 9,
Indicator light 9 is electrically connected with close to switch 8, and the induction extreme direction close to switch 8 is downward, and baffle and 65 minimum range of strainer are less than gear
Distance between the bottom of plate and the bottom of close switch 8, passes through and switchs close to 8 control instructions lamp 9 of switch.
Application method of the present invention:
First adsorption tower 1 absorption one: the first control valve 10, the 4th control valve 13, the control of the 6th control valve the 15, the 9th are opened
Valve 18 processed is entered by nine control valve 18 of the control valve family status equipped with adsorbent after raw air is filtered by filter mechanism 6
The first adsorption tower 1 in, oxygen is adsorbed by adsorbent, and the nitrogen gas purity in air improves gradually, and final products nitrogen is by first
1 bottom of adsorption tower is exported by the first control valve of control valve 10 to nitrogen buffer tank 4, for being used with gas.Second adsorption tower 2
In the oxygen that is adsorbed be discharged into atmosphere by the 6th control valve 15, the 4th control valve 13, silencer, while portioned product nitrogen
Gas carries out purging regeneration to the second adsorption tower 2 by manually-operated gate 20.
First adsorption tower 1 absorption two: closing the 6th control valve 15, opens the 8th control valve 17, and raw air passes through
After filter mechanism 6 filters, entered in the first adsorption tower 1 equipped with adsorbent by nine control valve 18 of the control valve family status, oxygen
It is adsorbed by adsorbent, the nitrogen gas purity in air improves gradually, and final products nitrogen passes through control valve by 1 bottom of the first adsorption tower
One control valve 10 of the family status is exported to nitrogen buffer tank 4, for being used with gas.The oxygen being adsorbed in second adsorption tower 2 is by the 8th
Control valve 17, the 4th control valve 13, silencer are discharged into atmosphere, at the same portioned product nitrogen by manually-operated gate 20 to second
Adsorption tower 2 carries out purging regeneration.
First adsorption tower, 1 to the second adsorption tower 2 is pressed: after the completion of the absorption of the first adsorption tower 1, closing the first control valve
10, the 4th control valve 13, the 9th control valve 18 open third control valve door 12, the 5th control valve 14, the first adsorption tower
Two tunnels of gas point in 1 are depressed into the second adsorption tower 2, pass through the 5th control valve 14, the 8th control valve 17 all the way, another
Third control valve door 12 is passed through on road, recycles the gas in the first adsorption tower 1.
Second adsorption tower 2 absorption one: after pressing, third control valve door 12, the 8th control valve 17 are closed, opens the
Two control valves 11, the 4th control valve 13, the tenth control valve 19, after raw air is filtered by filter mechanism 6, by controlling
The tenth control valve 19 of valve enters in the second adsorption tower 2 equipped with adsorbent, and oxygen is adsorbed by adsorbent, the nitrogen in air
Gas purity improves gradually, and final products nitrogen is exported extremely by 2 bottom of the second adsorption tower by the second control valve of control valve 11
Nitrogen buffer tank 4, for being used with gas.The oxygen being adsorbed in second adsorption tower 2 is by the 5th control valve 14, the 4th control valve
13, silencer is discharged into atmosphere, while portioned product nitrogen carries out purging regeneration to the first adsorption tower 1 by manually-operated gate 20.
Second adsorption tower 2 absorption two: closing the 5th control valve 14, opens the 7th control valve 16, and raw air passes through
After filter mechanism 6 filters, entered in the second adsorption tower 2 equipped with adsorbent by ten control valve 19 of the control valve family status, oxygen
It is adsorbed by adsorbent, the nitrogen gas purity in air improves gradually, and final products nitrogen passes through control valve by 2 bottom of the second adsorption tower
Two control valve 11 of the family status is exported to nitrogen buffer tank 4, for being used with gas.The oxygen being adsorbed in first adsorption tower 1 is by the 7th
Control valve 16, the 4th control valve 13, silencer are discharged into atmosphere, at the same portioned product nitrogen by manually-operated gate 20 to first
Adsorption tower 1 carries out purging regeneration.
Second adsorption tower, 2 to the first adsorption tower 1, which is inhaled, presses: after the completion of the absorption of the second adsorption tower 2, closing the second control valve
11, the 4th control valve 13, the tenth control valve 19 open third control valve door 12, the 6th control valve 15, the second adsorption tower
Two tunnels of gas point in 2 are depressed into the first adsorption tower 1, pass through the 6th control valve 15, the 7th control valve 16 all the way, another
Third control valve door 12 is passed through on road, recycles the gas in the second adsorption tower 2.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
Claims (8)
1. a kind of air separation by PSA nitrogen-making device, including the first adsorption tower (1), which is characterized in that first adsorption tower (1)
Inlet end by pipeline fixation be communicated with the 5th control valve (14), the 7th control valve (16) and the 9th control valve
(18), it and between the 7th control valve (16) and the 9th control valve (18) is interconnected by pipeline, first adsorption tower
(1) outlet side is communicated with the first control valve (10), third control valve door (12) and manually-operated gate (20) by pipeline fixation,
And it is interconnected between first control valve (10), third control valve door (12) and manually-operated gate (20) by pipeline；
The right side of first control valve (10) is communicated with the second control valve (11) and nitrogen buffer tank by pipeline fixation
(4), it and between the first control valve (10) and the second control valve (11) is interconnected by pipeline, the third control valve door
(12) right side on right side, manually-operated gate (20) and the right side of the second control valve (11) are communicated with second by pipeline fixation
Adsorption tower (2), it is mutual by pipeline between the third control valve door (12), manually-operated gate (20) and the second control valve (11)
The inlet end of connection, second adsorption tower (2) is communicated with the 6th control valve (15), the 8th control valve by pipeline fixation
(17) and the tenth control valve (19) it, and between the 8th control valve (17) and the tenth control valve (19) is mutually interconnected by pipeline
Logical, the right side of the 9th control valve (18) and the left side fixation of the tenth control valve (19) are communicated with the first air inlet pipe
(5), the right side of the 5th control valve (14), the left side of the 6th control valve (15), the 7th control valve (16) right side
It is interconnected by pipeline with the left side of the 8th control valve (17), the right side of the 5th control valve (14), the 6th control
Left side, the right side of the 7th control valve (16) and the left side of the 8th control valve (17) of valve (15) processed are fixed by pipeline
It is communicated with the 4th control valve (13), the bottom fixation of the 4th control valve (13) is communicated with muffler (3).
2. a kind of air separation by PSA nitrogen-making device according to claim 1, which is characterized in that first air inlet pipe
(5) left side fixation is communicated with filter mechanism (6).
3. a kind of air separation by PSA nitrogen-making device according to claim 2, which is characterized in that the filter mechanism (6)
Including cabinet (61), the surface bottom portion of the cabinet (61) is threaded with dust-collecting box (62), the upper surface of the cabinet (61)
Fixation is communicated with the second air inlet pipe (63), and the bottom of second air inlet pipe (63) through cabinet (61) and extends to cabinet (61)
Inside, the surface of second air inlet pipe (63) slidably connects slip ring (64), and the surface of the slip ring (64) is fixedly connected
Have strainer (65), the surface of the strainer (65) and the inner wall of cabinet (61) are slidably connected, the upper surface of the slip ring (64) and
The bottom of cabinet (61) is fixedly connected to spring (66), and the inner wall of the spring (66) and the surface of the second air inlet pipe (63) cover
Connect, the right side opening of the cabinet (61) is equipped with venthole (67), and the venthole (67) is located at the top of strainer (65), it is described out
The inner wall of stomata (67) is connected to the fixation of the surface of the first air inlet pipe (5).
4. a kind of air separation by PSA nitrogen-making device according to claim 2, which is characterized in that the cabinet (61) it is interior
Wall is fixedly connected with baffle ring (7), and the baffle ring (7) is located at the top of strainer (65), and the inner wall of the baffle ring (7) is fixedly connected with
Close to switch (8), the front of the cabinet (61) is fixedly connected with indicator light (9), the indicator light (9) and close switch (8)
Electrical connection.
5. a kind of air separation by PSA nitrogen-making device according to claim 4, which is characterized in that described close to switch (8)
Induction extreme direction it is downward.
6. a kind of air separation by PSA nitrogen-making device according to claim 4, which is characterized in that the baffle and strainer
(65) minimum range is less than distance between the bottom of baffle and the bottom of close switch (8).
7. a kind of air separation by PSA nitrogen-making device according to claim 1, which is characterized in that second adsorption tower
(2) outlet side passes through the right side of pipeline and third control valve door (12), the right side of manually-operated gate (20) and the second control valve
The fixed connection in the right side of door (11), the inlet end of the nitrogen buffer tank (4) pass through pipeline and the first control valve (10)
Right side is connected to the fixation of the left side of the second control valve (11).
8. a kind of pressure swing absorption method for preparing nitrogen from air according to claim 2, it is characterised in that:
First adsorption tower (1) absorption one: the first control valve (10), the 4th control valve (13), the 6th control valve are opened
(15), the 9th control valve (18), after raw air is filtered by filter mechanism (6), by nine control valve of the control valve family status
(18) it enters in the first adsorption tower (1) equipped with adsorbent, oxygen is adsorbed by adsorbent, and the nitrogen gas purity in air mentions gradually
Height, final products nitrogen are exported to nitrogen by the first control valve of control valve (10) by the first adsorption tower (1) bottom and are buffered
Tank (4), for being used with gas；The oxygen being adsorbed in second adsorption tower (2) is by the 6th control valve (15), the 4th control valve
(13), silencer is discharged into atmosphere, while portioned product nitrogen purges again the second adsorption tower (2) by manually-operated gate (20)
It is raw；
First adsorption tower (1) absorption two: closing the 6th control valve (15), opens the 8th control valve (17), and raw air is logical
After crossing filter mechanism (6) filtering, the first adsorption tower (1) equipped with adsorbent is entered by nine control valve of the control valve family status (18)
In, oxygen is adsorbed by adsorbent, and the nitrogen gas purity in air improves gradually, and final products nitrogen is by the first adsorption tower (1) bottom
It is exported by the first control valve of control valve (10) to nitrogen buffer tank (4), for being used with gas；Quilt in second adsorption tower (2)
The oxygen of absorption is discharged into atmosphere by the 8th control valve (17), the 4th control valve (13), silencer, while portioned product nitrogen
Gas carries out purging regeneration to the second adsorption tower (2) by manually-operated gate (20)；
First adsorption tower (1) is pressed to the second adsorption tower (2): after the completion of the first adsorption tower (1) absorption, closing the first control valve
(10), the 4th control valve (13), the 9th control valve (18) open third control valve door (12), the 5th control valve (14),
Two tunnels of gas in first adsorption tower (1) point are depressed into the second adsorption tower (2), all the way by the 5th control valve (14), the
Eight control valves (17), another way pass through third control valve door (12), the gas in recycling the first adsorption tower (1)；
Second adsorption tower (2) absorption one: after pressing, third control valve door (12), the 8th control valve (17) are closed, are opened
Second control valve (11), the 4th control valve (13), the tenth control valve (19), raw air pass through filter mechanism (6) mistake
After filter, entered in the second adsorption tower (2) equipped with adsorbent by ten control valve of the control valve family status (19), oxygen is adsorbed agent
It adsorbs, the nitrogen gas purity in air improves gradually, and final products nitrogen passes through control valve second by the second adsorption tower (2) bottom
Control valve (11) is exported to nitrogen buffer tank (4), for being used with gas；The oxygen being adsorbed in second adsorption tower (2) is by the 5th
Control valve (14), the 4th control valve (13), silencer are discharged into atmosphere, while portioned product nitrogen is by manually-operated gate (20)
Purging regeneration is carried out to the first adsorption tower (1)；
Second adsorption tower (2) absorption two: closing the 5th control valve (14), opens the 7th control valve (16), and raw air is logical
After crossing filter mechanism (6) filtering, the second adsorption tower (2) equipped with adsorbent is entered by ten control valve of the control valve family status (19)
In, oxygen is adsorbed by adsorbent, and the nitrogen gas purity in air improves gradually, and final products nitrogen is by the second adsorption tower (2) bottom
It is exported by the second control valve of control valve (11) to nitrogen buffer tank (4), for being used with gas；Quilt in first adsorption tower (1)
The oxygen of absorption is discharged into atmosphere by the 7th control valve (16), the 4th control valve (13), silencer, while portioned product nitrogen
Gas carries out purging regeneration to the first adsorption tower (1) by manually-operated gate (20)；
Second adsorption tower (2) is inhaled to the first adsorption tower (1) presses: after the completion of the second adsorption tower (2) absorption, closing the second control valve
Door (11), the 4th control valve (13), the tenth control valve (19), open third control valve door (12), the 6th control valve
(15), two tunnels of the gas in the second adsorption tower (2) point are depressed into the first adsorption tower (1), pass through the 6th control valve all the way
(15), the 7th control valve (16), another way pass through third control valve door (12), the gas in recycling the second adsorption tower (2).
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| CN201910624220.4A CN110237651A (en) | 2019-07-11 | 2019-07-11 | A kind of air separation by PSA nitrogen-making device and method |
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Cited By (1)
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Application publication date: 20190917 |