JPH04108512A - Pressure swing type oxygen producing apparatus - Google Patents
Pressure swing type oxygen producing apparatusInfo
- Publication number
- JPH04108512A JPH04108512A JP2222421A JP22242190A JPH04108512A JP H04108512 A JPH04108512 A JP H04108512A JP 2222421 A JP2222421 A JP 2222421A JP 22242190 A JP22242190 A JP 22242190A JP H04108512 A JPH04108512 A JP H04108512A
- Authority
- JP
- Japan
- Prior art keywords
- cooling medium
- adsorbent
- hot gas
- valve
- gas line
- 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.)
- Pending
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims description 18
- 239000001301 oxygen Substances 0.000 title claims description 18
- 229910052760 oxygen Inorganic materials 0.000 title claims description 18
- 238000001179 sorption measurement Methods 0.000 claims abstract description 39
- 239000003463 adsorbent Substances 0.000 claims abstract description 26
- 239000003507 refrigerant Substances 0.000 claims description 37
- 239000007789 gas Substances 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000010257 thawing Methods 0.000 abstract description 3
- 239000002826 coolant Substances 0.000 abstract 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000001172 regenerating effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000003795 desorption Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、混成ガスである原料空気から高純度酸素を吸
着剤により分離する圧力スイング式酸素製造装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a pressure swing type oxygen production apparatus that separates high-purity oxygen from raw air, which is a mixed gas, using an adsorbent.
（従来の技術）
従来の圧力スイング式酸素製造装置を第２図により説明
すると、（１）がエアフィルタ、（２）が複数基の吸着
塔、（３）が原字ブロア、（４）がアフタークーラ。(Prior Art) A conventional pressure swing type oxygen production device is explained with reference to Fig. 2. (1) is an air filter, (2) is a plurality of adsorption towers, (3) is a blower, and (4) is a Aftercooler.
（５）が冷凍機、（６）が膨張弁、（７）が保冷庫用ク
ーラ。(5) is a refrigerator, (6) is an expansion valve, and (7) is a cooler for cold storage.
（１０）が圧縮機、 （１１）が冷媒配管、 （１２）
が冷媒戻り配管、（１３）が複数台の真空ポンプで、エ
アフィルタ（１）から取り込まれて各吸着塔（２）へ流
入した原料空気が原字ブロア（３）からの外気により加
圧されて、窒素吸着工程に入るが、原字ブロア（３）後
方のアフタークーラ（４）に冷却水が循環しており、加
圧時の温度上昇が抑制される。このとき。(10) is the compressor, (11) is the refrigerant pipe, (12)
is a refrigerant return pipe, (13) is a plurality of vacuum pumps, and the raw air taken in from the air filter (1) and flowing into each adsorption tower (2) is pressurized by outside air from the original blower (3). Then, the nitrogen adsorption process begins, but cooling water is circulated in the aftercooler (4) behind the original blower (3), which suppresses the temperature rise during pressurization. At this time.
冷凍機（５）の系統では、冷凍機（５）により冷却され
て液化されたフレオンが冷媒配管（１１）を経て膨張弁
（６）へ送られ、ここで気化されて、各吸着塔（２）内
のフレオン熱交換器へ管内流体として送られて、各吸着
塔（２）が内側から冷却される。一方。In the refrigerator (5) system, Freon is cooled and liquefied by the refrigerator (5) and sent to the expansion valve (6) via the refrigerant pipe (11), where it is vaporized and sent to each adsorption tower (2). ) to cool each adsorption tower (2) from the inside. on the other hand.
各吸着塔（２）外では、保冷庫用クーラ（７）により各
吸着塔（２）が外側から冷却されて、同各吸着塔（２）
が低温状態に保持される。なお吸着塔（２）の内外を冷
却するのは、吸着剤に低温型吸着剤を使用しているため
である。Outside each adsorption tower (2), each adsorption tower (2) is cooled from the outside by a cold storage cooler (7), and each adsorption tower (2) is cooled from the outside.
is kept at a low temperature. Note that the reason why the inside and outside of the adsorption tower (2) is cooled is because a low-temperature type adsorbent is used as the adsorbent.
また吸着剤により原料空気中の水分が吸収されると、吸
着剤は、性能が低下するので、吸着剤を再生する必要が
あり、その場合には、吸着塔（２）を開き、吸ｆ荊の全
てを取り出して、加熱するか。In addition, when moisture in the feed air is absorbed by the adsorbent, the performance of the adsorbent decreases, so it is necessary to regenerate the adsorbent. In that case, open the adsorption tower (2) and Should I take everything out and heat it?
新品と取り替えるようにしている。I'm trying to replace it with a new one.
（発明が解決しようとする課ａ）
前記第２図に示す従来の圧力スイング式酸素製造装置で
は、エアフィルタ（１）や原字プロア（３）から吸着塔
（２）へ流入した原料空気が水分を含むため、バルブ故
障等のトラブルが発注すると、吸着塔（２）内に水分が
残存する。一方、低温型吸着剤は、低温下で最も優れた
選択的窒素吸着性を発揮する反面、水分を吸収しやすい
性質があるため。(Issue A to be Solved by the Invention) In the conventional pressure swing type oxygen production apparatus shown in FIG. Since it contains water, if a problem such as a valve malfunction occurs, water will remain in the adsorption tower (2). On the other hand, while low-temperature adsorbents exhibit the best selective nitrogen adsorption at low temperatures, they also tend to absorb moisture.
吸着塔（２）内の残存した水分を吸収して、性能劣化を
引起しやすい。この吸着剤の水分を除去して。Residual moisture in the adsorption tower (2) is likely to be absorbed, causing performance deterioration. Remove moisture from this adsorbent.
吸着剤を再生する場合、吸着剤の全てを吸着塔（２）か
ら取り出して、加熱するか、新品と取り替えなければな
らなくて、吸着剤の再生に多くの時間と手間とを要して
、非能率的であった。When regenerating the adsorbent, all the adsorbent must be taken out from the adsorption tower (2) and either heated or replaced with a new one, which requires a lot of time and effort to regenerate the adsorbent. It was inefficient.
本発明は前記の問題点に鑑み提案するものであり、その
目的とする処は、吸着剤の再生を能率的に行うことがで
きる圧力スイング式酸素製造装置を捉供しようとする点
にある。The present invention has been proposed in view of the above-mentioned problems, and its purpose is to provide a pressure swing type oxygen production device that can efficiently regenerate adsorbent.
（課題を解決するための手段）
上記の目的を達成するために１本発明は、混成ガスであ
る原料空気から高純度酸素を吸着剤により分離する圧力
スイング式酸素製造装置において。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a pressure swing type oxygen production apparatus that separates high purity oxygen from raw air, which is a mixed gas, using an adsorbent.
冷凍機から吸着塔内のフレオン熱交換器へ延びた冷媒配
管に冷媒バルブを設け、上記冷凍機の冷媒戻りと上記冷
媒バルブの吸着塔側との間にホットガスラインを設けて
、このホットガスラインにバイパス弁を設けている。A refrigerant valve is provided in the refrigerant pipe extending from the refrigerator to the Freon heat exchanger in the adsorption tower, and a hot gas line is provided between the refrigerant return of the refrigerator and the adsorption tower side of the refrigerant valve, and the hot gas is A bypass valve is installed in the line.
（作用）
本発明の圧力スイング式酸素製造装置は前記のように構
成されており、冷凍機から吸着塔内のフレオン熱交換器
へ延びた冷媒配管の冷媒バルブを閉じ、ホットガスライ
ンのバイパス弁を開いて。(Function) The pressure swing type oxygen production apparatus of the present invention is configured as described above, and the refrigerant valve of the refrigerant pipe extending from the refrigerator to the Freon heat exchanger in the adsorption tower is closed, and the bypass valve of the hot gas line is closed. Open it.
冷媒を冷凍機を通さずに、ホットガスライン→冷媒配管
→吸着塔内の熱交換器内→冷媒戻り配管→圧縮機→ホッ
トガスラインに循環させて、冷媒を圧縮機により圧縮し
、高温状態にして、デフロストしながら上記熱交換器を
加熱してゆく。またこれと同時に保冷庫用クーラの作動
を止め、アフタークーラの循環水を止め９次いで真空ポ
ンプによる脱着工程に入り、吸着塔内を−６５０ｍｍＨ
ｇ程度まで減圧し、加熱して水分吸着性の弱くなった低
温型吸着剤から水分を効率よく吸引して、低温型吸着剤
を再生させる。The refrigerant is circulated through the hot gas line → refrigerant piping → heat exchanger in the adsorption tower → refrigerant return piping → compressor → hot gas line without passing through the refrigerator, and the refrigerant is compressed by the compressor to reach a high temperature state. and heat the heat exchanger while defrosting. At the same time, the operation of the cold storage cooler was stopped, and the circulating water of the aftercooler was stopped.9 Then, the desorption process using a vacuum pump started, and the inside of the adsorption tower was adjusted to -650 mmH.
The pressure is reduced to approximately 1.5 g, and water is efficiently sucked out from the low-temperature adsorbent whose water adsorption properties have been weakened by heating, thereby regenerating the low-temperature adsorbent.
（実施例）
次に本発明の圧力スイング式酸素製造装置を第１図に示
す一実施例により説明すると、（２）が複数基の吸着塔
、（５）が冷凍機、 （１１）が同冷凍機（５）から各
吸着塔（２）内のフレオン熱交換器へ延びた冷媒配管、
（８）が同冷媒配管（１１）の冷凍機（５）側に設けた
冷媒パルプ、（６）が同冷媒配管（１１）の各吸着塔（
２）側に設けた膨張弁、 （１２）が上記各吸着塔（２
）内のフレオン熱交換器から圧縮器（１０）を経て上記
冷凍機（５）へ延びた冷媒戻り配管、 （１４）が上記
冷凍機（５）の冷媒戻りと上記冷媒パルプ（８）の吸着
塔側との間に設けたホットガスライン、（９）が同ホッ
トガスライン（１４）に設けたバイパス弁である。(Example) Next, the pressure swing type oxygen production apparatus of the present invention will be explained with reference to an example shown in FIG. refrigerant piping extending from the refrigerator (5) to the Freon heat exchanger in each adsorption tower (2);
(8) is the refrigerant pulp provided on the refrigerator (5) side of the refrigerant pipe (11), and (6) is each adsorption tower (
2) The expansion valve (12) is installed on each adsorption tower (2).
), the refrigerant return pipe extends from the Freon heat exchanger to the refrigerator (5) via the compressor (10), and (14) is the refrigerant return pipe for the refrigerator (5) and the adsorption of the refrigerant pulp (8). The hot gas line (9) is a bypass valve provided in the hot gas line (14) between the hot gas line and the tower side.
本実施例でも、第２図に示すエアフィルタ（１）と原字
プロア（３）とアフタークーラ（４）と保冷庫用クーラ
（７）と真空ポンプ（１３）とを具えているが。This embodiment also includes an air filter (1), an original proa (3), an aftercooler (4), a cold storage cooler (7), and a vacuum pump (13) shown in FIG.
これら機器については図示を省略している。また上記真
空ポンプ（１３）では、真空ポンプのサイクルタイムを
延長し、減圧時間を延ばして、吸着塔（２）内を−６５
０ｓ＋ｍＨｇ程度まで減圧する。即ち。Illustrations of these devices are omitted. In addition, in the vacuum pump (13), the cycle time of the vacuum pump is extended, the depressurization time is extended, and the inside of the adsorption tower (2) is -65
Reduce the pressure to about 0s+mHg. That is.
真空ポンプ（１３）は１通常−５３０〜５８０ａ＋ｍＨ
ｇ＊で吸着塔（２）内を減圧して、窒素を脱着している
が１本実施例では真空ポンプのサイクルタイムを延長し
、減圧時間を延ばして、吸着塔（２）内を−６５０ｓｍ
Ｈｇ程度まで減圧する。Vacuum pump (13) 1 usually -530~580a+mH
g* to depressurize the inside of the adsorption tower (2) and desorb nitrogen, but in this example, the cycle time of the vacuum pump was extended, the depressurization time was extended, and the inside of the adsorption tower (2) was reduced to -650 s.
Reduce the pressure to about Hg.
次に前記第１図に示す圧力スイング式酸素製造装置の作
用を具体的に説明する。冷凍機（５）がら吸着塔（２）
内のフレオン熱交換器へ延びた冷媒配管（１１）の冷媒
バルブ（８）を閉じ、ホットガスライン（１４）のバイ
パス弁（９）を開いて、それまで冷凍機（５）を経て冷
却していたフレオンを冷凍機（５）を通さずに、ホット
ガスライン（１４）→冷媒配管（１１）→膨張弁（６）
→吸着塔（２）内のフレオン熱交換器内→冷媒戻り配管
（１２）→圧縮機（１０）−ホットガスライン（１４）
に循環させて、フレオンを圧縮機（１０）により圧縮し
、高温状態にして、デフロストしながらフレオン熱交換
器を加熱してゆく。またこれと同時に保冷庫用クーラ（
７）の作動を止め。Next, the operation of the pressure swing type oxygen production apparatus shown in FIG. 1 will be specifically explained. Adsorption tower (2) with refrigerator (5)
Close the refrigerant valve (8) of the refrigerant pipe (11) extending to the Freon heat exchanger in the interior, open the bypass valve (9) of the hot gas line (14), and cool the gas through the refrigerator (5) until then. Instead of passing the Freon that had been stored in the refrigerator through the refrigerator (5), connect it to the hot gas line (14) → refrigerant pipe (11) → expansion valve (6).
→ Inside the Freon heat exchanger in the adsorption tower (2) → Refrigerant return pipe (12) → Compressor (10) - Hot gas line (14)
The freon is compressed by a compressor (10), brought to a high temperature state, and the freon heat exchanger is heated while being defrosted. At the same time, the refrigerator cooler (
7) Stops the operation.
アフタークーラ（４）の循環水を止めて、圧力スイング
式酸素製造装置の冷却作用を停止させる。次いで真空ポ
ンプ（１３）による脱着工程に入る。このとき、真空ポ
ンプ（１３）のサイクルタイムを延長して１吸着塔（２
）内を−６５０ｍｍＨｇ程度まで減圧しており、加熱し
て水分吸着性の弱くなった低温型吸着剤から水分を効率
よく吸引して、低温型吸着剤を再生させる。The circulating water of the aftercooler (4) is stopped to stop the cooling action of the pressure swing type oxygen production device. Next, a desorption process using a vacuum pump (13) begins. At this time, the cycle time of the vacuum pump (13) is extended to
) is reduced to about -650 mmHg, and water is efficiently sucked out from the low-temperature adsorbent whose moisture adsorption properties have weakened due to heating, thereby regenerating the low-temperature adsorbent.
（発明の効果）
本発明の圧力スイング式酸素製造装置は前記のように冷
凍機から吸着塔内のフレオン熱交換器へ延びた冷媒配管
の冷媒バルブを閉じ、ホットガスラインのバイパス弁を
開いて、冷媒を冷凍機を通さずに、ホットガスライン→
冷媒配管→吸着塔内の熱交換器内→冷媒戻り配管→圧縮
機耐ホツトガスラインに循環させて、冷媒を圧縮機によ
り圧縮し、高温状態にして、デフロストしながら上記熱
交換器を加熱してゆく。またこれと同時に保冷庫用クー
ラの作動を止め、アフタークーラの循環水を止め１次い
で真空ポンプによる脱着工程に入り吸着塔内を−６５０
ｍｍＨｇ程度まで減圧し、加熱して水分吸着性の弱くな
った低温型吸着剤から水分を効率よく吸引して、低温型
吸着剤を再生させるので、吸着剤の水分を除去して、吸
着剤を再生する場合、吸着剤の全てを吸着塔から取り出
して加熱するか、新品と取り替える必要がなくて、吸着
剤の再生を能率的に行うことができる効果がある。(Effects of the Invention) As described above, the pressure swing type oxygen production apparatus of the present invention closes the refrigerant valve of the refrigerant pipe extending from the refrigerator to the Freon heat exchanger in the adsorption tower, and opens the bypass valve of the hot gas line. , hot gas line without passing the refrigerant through the refrigerator →
The refrigerant is circulated through the refrigerant pipe → the heat exchanger in the adsorption tower → the refrigerant return pipe → the compressor hot gas line, and the refrigerant is compressed by the compressor, brought to a high temperature, and heated while defrosting. I'm going to go. At the same time, the operation of the cold storage cooler is stopped, and the circulating water of the aftercooler is stopped.Then, the desorption process using a vacuum pump begins, and the inside of the adsorption tower is heated to -650℃.
The pressure is reduced to about mmHg and water is efficiently sucked out from the low-temperature adsorbent whose water adsorption properties have weakened due to heating, and the low-temperature adsorbent is regenerated. When regenerating, there is no need to take all of the adsorbent out of the adsorption tower and heat it, or to replace it with a new one, which has the effect of efficiently regenerating the adsorbent.
第１図は本発明に係わる圧力スイング式酸素製造装置の
一実施例を示す系統図、第２図は従来の圧力スイング式
酸素製造装置を示す系統図である。
（１）・・・エアフィルタ、（２）・・・吸着塔、（３
）・・・原字ブロア、（４）・・・アフタークーラ、（
５）・・・冷凍機、（６）・・・膨張弁、（７）・・・
保冷庫用クーラ、（８）・・・冷媒バルブ、（９）・・
・バイパス弁、 （１０）・・・圧縮機、 （１１）・
・・冷媒配管。
（１２）・・・冷媒戻り配管、 （１３）・・・真空ポ
ンプ。
（１４）・・・ホットガスライン。FIG. 1 is a system diagram showing an embodiment of a pressure swing type oxygen production apparatus according to the present invention, and FIG. 2 is a system diagram showing a conventional pressure swing type oxygen production apparatus. (1) Air filter, (2) Adsorption tower, (3
)...original word blower, (4)...aftercooler, (
5)... Refrigerator, (6)... Expansion valve, (7)...
Cooler for cold storage, (8)... Refrigerant valve, (9)...
・Bypass valve, (10)...Compressor, (11)・
・Refrigerant piping. (12)...Refrigerant return piping, (13)...Vacuum pump. (14)...Hot gas line.
Claims (1)
分離する圧力スイング式酸素製造装置において、冷凍機
から吸着塔内のフレオン熱交換器へ延びた冷媒配管に冷
媒バルブを設け、上記冷凍機の冷媒戻りと上記冷媒バル
ブの吸着塔側との間にホットガスラインを設けて、この
ホットガスラインにバイパス弁を設けたことを特徴とす
る圧力スイング式酸素製造装置。In a pressure swing type oxygen production device that uses an adsorbent to separate high-purity oxygen from raw material air, which is a mixed gas, a refrigerant valve is installed in the refrigerant pipe extending from the refrigerator to the Freon heat exchanger in the adsorption tower. A pressure swing type oxygen production apparatus characterized in that a hot gas line is provided between the refrigerant return and the adsorption column side of the refrigerant valve, and a bypass valve is provided in the hot gas line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2222421A JPH04108512A (en) | 1990-08-27 | 1990-08-27 | Pressure swing type oxygen producing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2222421A JPH04108512A (en) | 1990-08-27 | 1990-08-27 | Pressure swing type oxygen producing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04108512A true JPH04108512A (en) | 1992-04-09 |
Family
ID=16782127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2222421A Pending JPH04108512A (en) | 1990-08-27 | 1990-08-27 | Pressure swing type oxygen producing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04108512A (en) |
-
1990
- 1990-08-27 JP JP2222421A patent/JPH04108512A/en active Pending
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