JPS60194273A - Controller for pressure of air separator - Google Patents
Controller for pressure of air separatorInfo
- Publication number
- JPS60194273A JPS60194273A JP4703984A JP4703984A JPS60194273A JP S60194273 A JPS60194273 A JP S60194273A JP 4703984 A JP4703984 A JP 4703984A JP 4703984 A JP4703984 A JP 4703984A JP S60194273 A JPS60194273 A JP S60194273A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- air
- valve
- adsorption tower
- compressor
- 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.)
- Granted
Links
Landscapes
- Separation By Low-Temperature Treatments (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、吸着塔方式を採用した空気分離装置の圧力制
御装ｗＬＫ−関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a pressure control device wLK- for an air separation device employing an adsorption tower system.
吸着塔を前処理装置として採用した空気分離装置は、例
えば、特開昭５４−１５２６６７号、特開昭５５−１２
１３７１号、特開昭５５−２７０３４号などに示されて
いる。このような空気分離装置では、吸着塔を２基以上
設置しておき、これらを一定時間毎に切替えながら運転
が継続される。Air separation devices employing adsorption towers as pretreatment devices are disclosed in, for example, Japanese Patent Application Laid-open Nos. 54-152667 and 1982-12.
No. 1371, Japanese Unexamined Patent Publication No. 55-27034, etc. In such an air separation device, two or more adsorption towers are installed, and operation is continued while switching between them at regular intervals.
吸着塔が切替えられるとき、吸着塔から空気分離本体側
に供給する原料空気の圧力が大幅に変動する。この圧力
変動により、原料空気の空気分離部への供給が一時的に
不安定となり、製品ガスの純度に悪影響を与えている。When the adsorption tower is switched, the pressure of the feed air supplied from the adsorption tower to the air separation main body side changes significantly. Due to this pressure fluctuation, the supply of raw material air to the air separation section becomes temporarily unstable, which adversely affects the purity of the product gas.
特に、圧縮機としてスクリュータイプのものを使用した
場合、応答遅れにより急激な吐出圧力の変動ｔこ追随で
きないのでその影響は無視できない。このため、空気分
離装置体を含む保冷槽の入口配管の途中に、大型のクッ
ションタンクを設けるなどの改良が加えられた例もある
が、圧力の変動を完全に防止することはできないという
問題があった。In particular, when a screw type compressor is used, it is not possible to follow sudden fluctuations in discharge pressure due to response delay, and the influence thereof cannot be ignored. For this reason, some improvements have been made, such as installing a large cushion tank in the middle of the inlet piping of the cold storage tank containing the air separation device, but there is a problem that pressure fluctuations cannot be completely prevented. there were.
、−本発明の目的は、空気分離部に供給される原料空気
の圧力変動を低くおさえることのできる空気分離装置の
圧力制御ｉｔを提供することである。- An object of the present invention is to provide a pressure control IT for an air separation device that can suppress pressure fluctuations of raw air supplied to an air separation unit.
本発明は、吸着塔と空気分離部を内蔵する保冷槽との間
を結ぶ原料空気供給用配管の途中に原料空気の圧力を調
節可能な圧力調節弁を設けると共ｔこ、原料空気の圧力
を所定値にするよう該圧力調節弁を調節する圧力調整部
とを設けたことを特徴とする。The present invention provides a pressure control valve that can adjust the pressure of the raw air in the middle of the raw air supply piping connecting the adsorption tower and the cold storage tank containing the air separation section. The present invention is characterized by further comprising a pressure adjustment section that adjusts the pressure adjustment valve so that the pressure is set to a predetermined value.
以下、本発明を第１図に示す具体的実施例に基づぎ詳細
に説明する。第１図において、１は圧縮機であり、原料
空気を高圧ｔこして配管１１に吐出する。２と３は吸着
塔であり、原料空気中の水、二酸化炭素などの不純物を
吸着除去するために設けられる。４は空気分離部を内蔵
する保冷槽であり、ここで空気分離が行なわれる。５は
圧力調整部であり、図示しない圧力検出器の出力と設定
された圧力との差をなくすようｔこ圧力調節弁６の弁開
度を調節する。７．７′、８．８′、９．９′、１０お
よび１０′は流路切替用の弁である。１１と１２は配管
である。１４は圧力スイッチ、１５は弁であり、設定し
た圧力を越えたとき圧力スイッチ１４が動作して弁を開
放する。したがって、圧縮機１の吐出側圧力が一定値を
越えることはない。さて、第１図において、弁７、弁９
、弁１０′、弁８／が開ぎ、吸着塔２が吸着運転、吸着
塔３が再生運転となっている場合を考える。この場合、
圧縮機１で圧縮された原料空気は、配管１１、弁７を通
り、吸着塔２に供給され、ここで水分、二酸化炭素が設
着除去される。吸着塔２で不純物を除去された原料空気
は、弁９．配管１２を通り、保冷槽４に送り込まれる。Hereinafter, the present invention will be explained in detail based on a specific embodiment shown in FIG. In FIG. 1, reference numeral 1 denotes a compressor, which compresses raw material air at high pressure and discharges it into a pipe 11. Adsorption towers 2 and 3 are provided to adsorb and remove impurities such as water and carbon dioxide from the raw air. Reference numeral 4 denotes a cold storage tank containing an air separation section, in which air separation is performed. Reference numeral 5 denotes a pressure adjustment section, which adjusts the opening degree of the pressure adjustment valve 6 so as to eliminate the difference between the output of a pressure detector (not shown) and the set pressure. 7.7', 8.8', 9.9', 10 and 10' are flow path switching valves. 11 and 12 are piping. 14 is a pressure switch, and 15 is a valve. When the set pressure is exceeded, the pressure switch 14 operates to open the valve. Therefore, the pressure on the discharge side of the compressor 1 never exceeds a certain value. Now, in Fig. 1, valve 7, valve 9
, valve 10', and valve 8/ are open, the adsorption tower 2 is in adsorption operation, and the adsorption tower 3 is in regeneration operation. in this case,
The raw air compressed by the compressor 1 passes through a pipe 11 and a valve 7 and is supplied to an adsorption tower 2, where water and carbon dioxide are removed. The raw air from which impurities have been removed in the adsorption tower 2 is passed through the valve 9. It passes through the pipe 12 and is sent into the cold storage tank 4.
配管１２の途中（仁は、圧力調節弁５が設けられており
、圧力調整部５に−よってこの調節弁５の開度が調節さ
れるので、保冷槽４には一定圧力の原料空気が安定に供
給される。このとき、吸着塔３は、保冷槽４からの廃ガ
スの供給を受け、吸着している不純物を弁８′を介して
外部に排出する動作となっている。ここで、吸着塔２で
行なっていた吸着運転を、吸着塔３に切替える場合を考
える。この場合、いヨ創で開となっていた弁７．９．１
０′、８′は閉じられ、いままで閉となっていた弁７′
、８，９’、１０が開となる。このとき、配管１２に送
り込まれていた原料空気の圧力は一時的に低下する。圧
力調節弁６は、原料空気の圧力を所定値に維持するよう
に開動作となる。この実施例では、圧縮機１から供給さ
れる圧縮された原料空気の圧力を必要な圧力よりも高く
して運転している。このため、この切替ｔこよる圧力の
低下に対しても、保冷槽４に供給される原料空気の圧力
は、上述した調節弁６の作用により所定値に保たれる。A pressure regulating valve 5 is provided in the middle of the pipe 12, and the opening degree of this regulating valve 5 is adjusted by the pressure regulating part 5, so that raw air at a constant pressure is stably supplied to the cold storage tank 4. At this time, the adsorption tower 3 receives the waste gas from the cold storage tank 4 and discharges the adsorbed impurities to the outside through the valve 8'.Here, Let us consider a case where the adsorption operation performed in adsorption tower 2 is switched to adsorption tower 3. In this case, valve 7.9.1, which was open due to an injury,
0' and 8' are closed, and valve 7', which was closed until now, is closed.
, 8, 9', and 10 are open. At this time, the pressure of the raw material air sent into the pipe 12 is temporarily reduced. The pressure regulating valve 6 is opened to maintain the pressure of the raw air at a predetermined value. In this embodiment, the compressor 1 operates with the pressure of the compressed raw air supplied from the compressor 1 higher than the required pressure. Therefore, even when the pressure decreases due to this switching t, the pressure of the raw air supplied to the cold storage tank 4 is maintained at a predetermined value by the action of the control valve 6 described above.
圧縮機１の吐出側圧力が予定値を越えると、圧力スイッ
チ１４によって弁１５が開かれるので、この圧力が異常
に高くなることはない。When the pressure on the discharge side of the compressor 1 exceeds a predetermined value, the valve 15 is opened by the pressure switch 14, so this pressure will not become abnormally high.
なお、第１図に示す実施例では、圧縮機１によって圧縮
された原料空気圧力を常に高目に設定しておき、調節弁
６の調節によって目標値になるようにしているが、必ず
しもこのようにする必要はない。すなわち、切替動作直
前において、原料空気圧力を高くするよう圧縮ｉａ１を
調整すれば良い。In the embodiment shown in FIG. 1, the pressure of the raw air compressed by the compressor 1 is always set at a high level, and the pressure is adjusted to the target value by adjusting the control valve 6. However, this is not always the case. There's no need to do it. That is, just before the switching operation, the compression ia1 may be adjusted to increase the raw material air pressure.
以上説明したように本発明によれば、空気分離部に供給
される原料空気の圧力変動を低くおさえることができ、
安定な運転、製品ガスの純度の向上に寄与するところ大
である。As explained above, according to the present invention, pressure fluctuations in the raw air supplied to the air separation section can be suppressed,
This greatly contributes to stable operation and improved product gas purity.
第１図は本発明の一実施例図面である。
１・・・・・・圧縮機、２．３・・・・・・吸着塔、４
・・・・・・保冷槽、５・・・・・・圧力調整部、６・
・・・・・圧力調節弁、７．７？ ｓ、 ８？９．９？
１０．１０で・・・・・・弁、１１．１２・曲・配管、
１４・・・圧力スイッチ、１５・・・・・・弁。FIG. 1 is a drawing showing an embodiment of the present invention. 1...Compressor, 2.3...Adsorption tower, 4
...Cold tank, 5...Pressure adjustment section, 6.
...Pressure control valve, 7.7? s, 8?9.9?
10. In 10... Valve, 11.12 Bend/Piping,
14...Pressure switch, 15...Valve.
Claims (1)
不純物を吸着除去する吸着塔と、吸着塔で不純物の除去
された原料空気を分離する分離部を内蔵する保冷槽とか
らなる空気分離装置の原料ガス圧力を制御するものにお
いて、前記吸着塔から吐出する原料空気の圧力を調節可
能な圧力調節弁と、該圧力を所定値にするよう該圧力調
節弁を調節する圧力調整部とを設けたことを特徴とする
空気分離装置の圧力制御装置。1. Air separation consisting of a compressor, an adsorption tower that adsorbs and removes impurities in the feed air pressurized by the compressor, and a cold storage tank that has a built-in separation section that separates the feed air from which impurities have been removed by the adsorption tower. The apparatus for controlling the pressure of the raw material gas of the apparatus includes a pressure regulating valve that can adjust the pressure of the raw material air discharged from the adsorption tower, and a pressure regulating part that regulates the pressure regulating valve so that the pressure is at a predetermined value. A pressure control device for an air separation device, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4703984A JPS60194273A (en) | 1984-03-14 | 1984-03-14 | Controller for pressure of air separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4703984A JPS60194273A (en) | 1984-03-14 | 1984-03-14 | Controller for pressure of air separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60194273A true JPS60194273A (en) | 1985-10-02 |
| JPH026995B2 JPH026995B2 (en) | 1990-02-14 |
Family
ID=12764017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4703984A Granted JPS60194273A (en) | 1984-03-14 | 1984-03-14 | Controller for pressure of air separator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60194273A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58178181A (en) * | 1982-04-14 | 1983-10-19 | 株式会社日立製作所 | Adsorber |
-
1984
- 1984-03-14 JP JP4703984A patent/JPS60194273A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58178181A (en) * | 1982-04-14 | 1983-10-19 | 株式会社日立製作所 | Adsorber |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH026995B2 (en) | 1990-02-14 |
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