JPS6161853B2 - - Google Patents
Info
- Publication number
- JPS6161853B2 JPS6161853B2 JP58233358A JP23335883A JPS6161853B2 JP S6161853 B2 JPS6161853 B2 JP S6161853B2 JP 58233358 A JP58233358 A JP 58233358A JP 23335883 A JP23335883 A JP 23335883A JP S6161853 B2 JPS6161853 B2 JP S6161853B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- packed
- adsorbent
- air
- packed tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 21
- 238000000926 separation method Methods 0.000 claims description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 13
- 239000001301 oxygen Substances 0.000 claims description 13
- 229910052760 oxygen Inorganic materials 0.000 claims description 13
- 238000011069 regeneration method Methods 0.000 claims description 13
- 230000008929 regeneration Effects 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 239000003463 adsorbent Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 6
- 230000001172 regenerating effect Effects 0.000 claims 1
- 230000007423 decrease Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000002808 molecular sieve Substances 0.000 description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Landscapes
- Separation Of Gases By Adsorption (AREA)
Description
【発明の詳細な説明】
本発明は空気分離装置の再生時における復圧方
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pressure recovery method during regeneration of an air separation device.
空気分離装置として、モレキユラーシーブ（分
子ふるいカーボン）等の窒素吸着剤を充填した充
填塔を並設し、各充填塔に操作弁を介してリザー
バタンク、原料空気供給用送風機および真空排気
装置を接続したものである。 As an air separation device, packed towers filled with a nitrogen adsorbent such as molecular sieve (molecular sieve carbon) are installed in parallel, and each packed tower is connected via an operating valve to a reservoir tank, a blower for supplying raw air, and a vacuum exhaust device. is connected.
この空気分離装置においては、送風機により充
填塔内に空気を供給して大気中の窒素を吸着し、
酸素リツチとしてリザーバタンクを介して所定場
所に送る一方、吸着剤を再生するには、充填塔内
を真空排気することにより吸着窒素を放出し、そ
の後、製品酸素を充填塔内に流入させ大気圧まで
復圧するか、又は空気供給弁を開いて送風機によ
り原料空気を充填塔内に導入して復圧再生してい
た。 In this air separation device, air is supplied into the packed tower using a blower to adsorb nitrogen from the atmosphere.
While oxygen is sent to a designated location via a reservoir tank as oxygen-rich material, in order to regenerate the adsorbent, the inside of the packed tower is evacuated to release the adsorbed nitrogen, and the product oxygen is then flowed into the packed tower to reduce atmospheric pressure. Either the air supply valve was opened and feed air was introduced into the packed tower using a blower to regenerate the pressure.
しかしながら、前者の再生方法によれば、リザ
ーバタンク内の製品酸素圧が低下する。一方、後
者の再生方法によれば、充填塔の復圧時に空気供
給弁を開とすると、原料空気が当該充填塔内に大
量に流入するため、他の吸着中の充填塔への原料
空気の供給が停止し、リザーバタンク内の製品酸
素圧が低下する。また、場合によつては、他の充
填塔内の原料空気が逆流して空気分離装置の機能
が停止したり、さらには、濃縮された窒素ガスが
逆流し、つぎの吸着工程における酸素濃度の低下
をもたらせる欠点があつた。 However, according to the former regeneration method, the product oxygen pressure in the reservoir tank decreases. On the other hand, according to the latter regeneration method, when the air supply valve is opened during pressure restoration of the packed tower, a large amount of raw air flows into the packed tower, which causes the flow of raw air to other packed towers that are being adsorbed. The supply stops and the product oxygen pressure in the reservoir tank decreases. In some cases, the feed air in other packed columns may flow backwards, causing the air separation equipment to stop functioning, or even the concentrated nitrogen gas may flow backwards, lowering the oxygen concentration in the next adsorption step. There were some drawbacks that could lead to a decline.
前記欠点を除去するためには、送風機を大容量
のものとすればよいが、コストアツプを招来する
という新たな欠点を有する。 In order to eliminate the above drawbacks, the blower may have a large capacity, but this has a new drawback of increasing costs.
本発明は前記従来の欠点を除去するためになさ
れたもので、復圧時、製品気体中で中間圧まで吸
着塔を復圧し、その後、大気開放弁を開くことに
より直接大気を充填塔内に流入して大気圧に復圧
するようにして、原料空気供給用送風機を大型化
することなく、所定濃縮の気体を安定して分離す
ることのできる空気分離装置の再生時における復
圧方法を提供することを目的とする。 The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional method. During pressure recovery, the adsorption tower is depressurized to an intermediate pressure in the product gas, and then the atmosphere is directly introduced into the packed column by opening the atmosphere release valve. To provide a method for restoring pressure during regeneration of an air separation device, capable of stably separating gas at a predetermined concentration without increasing the size of a blower for supplying raw air by inflowing and restoring the pressure to atmospheric pressure. The purpose is to
つぎに、本発明にかかる空気分離装置の再生時
における復圧方法を一実施例である図面にしたが
つて説明する。 Next, a method for restoring pressure during regeneration of an air separation device according to the present invention will be explained with reference to the drawings, which are one embodiment.
第１図は、本発明の対象となる空気分離装置を
示し、たとえば、内部にモレキユラーシーブから
なる窒素吸着剤を内蔵した３基の充填塔１，２，
３が並設され、これら各充填塔１，２，３の出口
側は配管P1およびこれに接続する分岐管P2，P3に
よつてリザーバタンク４に連通するとともに、配
管P1、分岐管P2，P3にはそれぞれ操作弁h1，h2，
h3を備えている。また、前記操作弁h1，h2，h3の
上流側は配管P4およびこれに接続する分岐管P5，
P6を介してリザーバタンク４に連通している。な
お、i1，i2，i3は操作弁である。 FIG. 1 shows an air separation device to which the present invention is applied, for example, three packed columns 1, 2,
3 are installed in parallel, and the outlet side of each of these packed towers 1, 2, and 3 communicates with the reservoir tank 4 through a pipe P1 and branch pipes P2 , P3 connected thereto, and the pipe P1 , branch pipes Pipes P 2 and P 3 have operating valves h 1 , h 2 , and
Equipped with h3 . Furthermore, the upstream side of the operation valves h 1 , h 2 , h 3 is a pipe P 4 and branch pipes P 5 , connected thereto.
It communicates with the reservoir tank 4 via P6 . Note that i 1 , i 2 , and i 3 are operating valves.
一方、充填塔１，２，３の入口側は配管P7およ
びこれに接続する分岐管P8，P9を介して真空排気
装置５に連通するとともに、配管P7、分岐管P8，
P9に設けた真空操作弁f1，f2，f3の上流側は操作
弁e1，e2，e3を有する配管PA1およびこれに接続
する分岐管P11，P12を介して原料空気供給用送風
機６に連通している。また、前記充填塔１，２，
３の入口側には大気開放弁g1，g2，g3がそれぞれ
設けてある。 On the other hand, the inlet sides of the packed towers 1, 2, and 3 communicate with the evacuation device 5 via a pipe P7 and branch pipes P8 , P9 connected thereto, as well as pipes P7 , branch pipes P8 ,
The upstream side of the vacuum operation valves f 1 , f 2 , f 3 provided in P 9 is connected to the piping PA 1 having the operation valves e 1 , e 2 , e 3 and the branch pipes P 11 , P 12 connected thereto. It communicates with a blower 6 for supplying raw air. In addition, the packed towers 1, 2,
Atmospheric release valves g 1 , g 2 , and g 3 are provided on the inlet side of the air conditioners 3, respectively.
つぎに、前記構成からなる空気分離装置の操業
について説明する。 Next, the operation of the air separation apparatus having the above configuration will be explained.
まず、充填塔１により酸素を分離するには操作
弁h1およびe1を開とするとともに、操作弁e2，
e3，h2，h3，i1，i2，i3，f1.f2，f3および大気開放
弁g1，g2，g3を開として送風機６を駆動し、原料
を前記各充填塔１に500〜5000mmH2Oの範囲の一
定圧力で供給する。そして、充填塔１中の窒素吸
着剤で空気中の窒素を吸着除去し、分離された製
品酸素はリザーバタンク４に貯留され、適宜使用
場所に送られる。 First, to separate oxygen using the packed column 1, the operation valves h 1 and e 1 are opened, and the operation valves e 2 and
e 3 , h 2 , h 3 , i 1 , i 2 , i 3 , f 1 .f 2 , f 3 and the atmosphere release valves g 1 , g 2 , g 3 are opened, the blower 6 is driven, and the raw material is Each packed column 1 is supplied with a constant pressure in the range of 500 to 5000 mmH2O . Then, the nitrogen adsorbent in the packed tower 1 adsorbs and removes nitrogen from the air, and the separated product oxygen is stored in the reservoir tank 4 and sent to the place of use as appropriate.
前記の如くして充填塔１の吸着剤が一定時間窒
素を吸着して飽和すると再生工程に入り、充填塔
２が吸着工程に入るが、いま充填塔１が再生時期
に来たとすると、操作弁h1，e1を閉とし、充填塔
２の操作弁e2，h2を開とするとともに、操作弁f1
を開として真空排気装置５を駆動して充填塔１内
を20〜2000Torrまで真空排気し、吸着剤に吸着
されている窒素を除去・放出する。その後、前記
操作弁f1を閉じるとともに真空排気装置５を停止
させると同時に操作弁i1を開とし、リザーバタン
ク４内の製品酸素を充填塔１内に逆流させ、中間
圧力（たとえば300〜600Torr）まで復圧し、つ
いで、操作弁i1を再度閉としたのち、大気開放弁
g1を開とすることにより大気圧に復圧する。 As mentioned above, when the adsorbent in packed tower 1 adsorbs nitrogen for a certain period of time and is saturated, it enters the regeneration process, and packed tower 2 enters the adsorption process.If packed tower 1 is now at the regeneration period, the operating valve h 1 and e 1 are closed, the operation valves e 2 and h 2 of the packed tower 2 are opened, and the operation valve f 1 is closed.
is opened and the vacuum evacuation device 5 is driven to evacuate the inside of the packed column 1 to 20 to 2000 Torr to remove and release nitrogen adsorbed by the adsorbent. Thereafter, the operation valve f 1 is closed and the evacuation device 5 is stopped, and at the same time the operation valve i 1 is opened to cause the product oxygen in the reservoir tank 4 to flow back into the packed column 1 and to maintain an intermediate pressure (for example, 300 to 600 Torr). ), then close operation valve i 1 again, and then close the atmospheric release valve.
By opening g 1 , the pressure is restored to atmospheric pressure.
このように、充填塔１内を大気圧に復圧する
と、空気分離装置の再生時における大気開放弁g1
を閉、操作弁h1，e1を開として前記同様、充填塔
１で再び酸素分離操作を行ない充填塔２で再生を
行なうものである。 In this way, when the pressure inside the packed column 1 is restored to atmospheric pressure, the atmosphere release valve g 1 during regeneration of the air separation device
is closed, operating valves h 1 and e 1 are opened, and the packed column 1 performs the oxygen separation operation again as described above, and the packed column 2 performs regeneration.
なお、前記再生、復圧工程は、各充填塔１〜３
で順次行なわれ連続して空気分離ができるもので
ある。前記説明においては酸素の分離について説
明したが窒素の分離についても同じである。 Note that the regeneration and pressure recovery steps are carried out in each packed tower 1 to 3.
This is done in sequence, allowing for continuous air separation. In the above description, the separation of oxygen was explained, but the same applies to the separation of nitrogen.
以上の説明で明らかなように、本発明にかかる
空気分離装置の再生時における復圧方法によれ
ば、復圧工程において原料空気供給用送風機から
の原料空気を一切使用しないため、送風機容量を
大きくしても他の充填塔での空気分離工程に支障
を与えることはない。また、復圧時に製品供給に
支障を与えない程度の製品気体を充填塔に逆流さ
せ、大気開放弁からの流入空気を用いるため、再
生終了後の分離気体濃度の大巾な変動を防止で
き、安定した濃度の酸素は窒素を得ることができ
るという効果を奏する。 As is clear from the above explanation, according to the pressure recovery method during regeneration of an air separation device according to the present invention, since no raw material air from the raw material air supply blower is used in the pressure recovery process, the blower capacity can be increased. However, it does not interfere with the air separation process in other packed columns. In addition, during pressure recovery, product gas flows back into the packed tower to the extent that it does not interfere with product supply, and air flowing in from the atmosphere release valve is used, which prevents wide fluctuations in the separated gas concentration after regeneration. A stable concentration of oxygen has the effect that nitrogen can be obtained.
第１図は本発明の対象となる空気分離装置の説
明図で、第２図はサイクルチヤートである。
１，２，３…充填塔、４…リザーバタンク、５
…真空排気装置、６…原料空気供給用送風機、
e1，e2，e3，f1，f2，f3，h1，h2，h3，i1，i2，i3…
操作弁、g1，g2，g3…大気開放弁。
FIG. 1 is an explanatory diagram of an air separation apparatus to which the present invention is applied, and FIG. 2 is a cycle chart. 1, 2, 3... Packed tower, 4... Reservoir tank, 5
...Vacuum exhaust device, 6.Blower for supplying raw air,
e 1 , e 2 , e 3 , f 1 , f 2 , f 3 , h 1 , h 2 , h 3 , i 1 , i 2 , i 3 …
Operation valves, g 1 , g 2 , g 3 ... atmospheric release valves.
Claims (1)
を介して接続したリザーバタンク、原料空気供給
用送風機および真空排気装置とからなり、前記送
風機で空気を充填塔に供給することにより大気中
の窒素又は酸素を吸着剤で吸着し、吸着剤の再生
にあたり、当該充填塔内を真空排除することによ
り吸着気体を放出し、その後、復圧して吸着剤を
再生する空気分離装置の再生方法において、前記
各充填塔に大気開放弁を設け、前記復圧工程に入
るあたり、前記操作弁を開いて当該充填塔をリザ
ーバタンク内の製品気体で中間圧力まで復圧し、
その後、前記大気開放弁を開いて当該充填塔を大
気圧に復圧することを特徴とする空気分離装置の
再生時における復圧方法。1 Consists of adsorbent packed towers installed in parallel, a reservoir tank connected to each packed tower via an operating valve, a blower for supplying raw air, and a vacuum evacuation device. A method for regenerating an air separation device, in which the nitrogen or oxygen contained in the column is adsorbed by an adsorbent, and when the adsorbent is regenerated, the adsorbed gas is released by vacuuming the inside of the packed column, and then the pressure is restored to regenerate the adsorbent. In this step, each packed tower is provided with an atmosphere release valve, and when entering the pressure recovery step, the operation valve is opened to pressure the packed tower back to an intermediate pressure with the product gas in the reservoir tank,
A method for restoring pressure during regeneration of an air separation device, the method comprising: thereafter opening the atmosphere release valve to restore the pressure in the packed column to atmospheric pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58233358A JPS60125224A (en) | 1983-12-09 | 1983-12-09 | Pressure restoring method at time of regeneration of air separation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58233358A JPS60125224A (en) | 1983-12-09 | 1983-12-09 | Pressure restoring method at time of regeneration of air separation apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60125224A JPS60125224A (en) | 1985-07-04 |
| JPS6161853B2 true JPS6161853B2 (en) | 1986-12-27 |
Family
ID=16953894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58233358A Granted JPS60125224A (en) | 1983-12-09 | 1983-12-09 | Pressure restoring method at time of regeneration of air separation apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60125224A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4900988B2 (en) * | 2000-03-27 | 2012-03-21 | 大陽日酸株式会社 | Nitrogen gas separation method |
| DE102014201455B4 (en) | 2013-10-17 | 2017-02-09 | Johnson Controls Components Gmbh & Co. Kg | Turning device for a vehicle seat and vehicle seat |
-
1983
- 1983-12-09 JP JP58233358A patent/JPS60125224A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60125224A (en) | 1985-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH04330913A (en) | Absorption process for separating gaseous mixture | |
| JP3050881B2 (en) | How to separate oxygen from air | |
| US5620501A (en) | Recovery of trace gases from gas streams | |
| JPS6022965B2 (en) | Method and device for increasing a given gas ratio in a gaseous mixture | |
| ATE336292T1 (en) | PRESSURE SWING ADSORPTION METHOD AND APPARATUS WITH A SINGLE BED | |
| JPS598605A (en) | Concentration of nitrogen | |
| US5997611A (en) | Single vessel gas adsorption system and process | |
| KR930010761B1 (en) | Air separator | |
| JPWO2020105242A1 (en) | Gas separation device and gas separation method | |
| JPS6161853B2 (en) | ||
| JPH10272332A (en) | Gas separation device and method of operating the same | |
| JP2644823B2 (en) | Regeneration method of helium gas purification adsorber | |
| JPH034243B2 (en) | ||
| JP3121293B2 (en) | Mixed gas separation method by pressure swing adsorption method | |
| JPH07330306A (en) | Oxygen generation method by pressure fluctuation adsorption separation method | |
| JPH0239292B2 (en) | ||
| JPH06254395A (en) | Method for regenerating adsorbent in pressure swing adsorption for recovering co2 | |
| JPS636481B2 (en) | ||
| EP0055962A2 (en) | Repressurisation for pressure swing adsorption system | |
| JP2755407B2 (en) | Pressure swing type gas separator | |
| JPH0938443A (en) | Gas separation device | |
| JP3561886B2 (en) | Pressure fluctuation adsorption separation method | |
| JPS63240914A (en) | Separation of nitrogen from gaseous mixture containing oxygen and nitrogen | |
| JPS6178417A (en) | Improved method and apparatus for separating gaseous mixture | |
| JP3369424B2 (en) | Mixed gas separation method |