JPH0328363B2 - - Google Patents
Info
- Publication number
- JPH0328363B2 JPH0328363B2 JP57033407A JP3340782A JPH0328363B2 JP H0328363 B2 JPH0328363 B2 JP H0328363B2 JP 57033407 A JP57033407 A JP 57033407A JP 3340782 A JP3340782 A JP 3340782A JP H0328363 B2 JPH0328363 B2 JP H0328363B2
- Authority
- JP
- Japan
- Prior art keywords
- oxygen
- air
- raw material
- separation
- pressure swing
- 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 - Lifetime
Links
- 239000001301 oxygen Substances 0.000 claims description 56
- 229910052760 oxygen Inorganic materials 0.000 claims description 56
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 51
- 238000000926 separation method Methods 0.000 claims description 33
- 239000012528 membrane Substances 0.000 claims description 22
- 238000001179 sorption measurement Methods 0.000 claims description 18
- 239000002994 raw material Substances 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 150000002926 oxygen Chemical class 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 229920002301 cellulose acetate Polymers 0.000 claims description 2
- 229920002379 silicone rubber Polymers 0.000 claims description 2
- 239000004945 silicone rubber Substances 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000012466 permeate Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Oxygen, Ozone, And Oxides In General (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Separation Of Gases By Adsorption (AREA)
Description
【発明の詳細な説明】
この発明は酸素を高収率で製造することのでき
る酸素の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing oxygen that can produce oxygen in high yield.
一般に工業用の酸素は空気を原料とし、この空
気を分離して製造されるが、このような空気分離
方法の１つにプレツシヤ・スイング・アドソープ
シヨン方式酸素分離法がある。第１図は、このプ
レツシヤ・スイング・アドソープシヨン方式酸素
分離法の一例を示すものである。原料空気は圧縮
機４により５Kg／cm3程度に加圧されたのち、吸着
塔などよりなる周知のプレツシヤ・スイング・ア
ドソープシヨン式空気分離装置５に送られ、ここ
で酸素と窒素とに分離されて、製品酸素とされ
る。しかし、このようなプレツシヤ・スイング・
アドソープシヨン方式の酸素製造方法において、
製品酸素量は原料空気量に比例した量しか生産で
きなく、その生産量が限定されていた。 Generally, industrial oxygen is produced by separating air using air as a raw material, and one such air separation method is a pressure swing adsorption oxygen separation method. FIG. 1 shows an example of this pressure swing adsorption oxygen separation method. After the raw air is pressurized to about 5 kg/cm 3 by the compressor 4, it is sent to the well-known pressure swing adsorption type air separation device 5, which consists of an adsorption tower, etc., where it is separated into oxygen and nitrogen. The product is made into oxygen. However, such pressure swing
In the adsorption oxygen production method,
The amount of product oxygen that can be produced is only proportional to the amount of raw material air, and the production amount has been limited.
この発明は、このような従来の空気分離方法に
おける無駄を省き、目的とする酸素を効率よく、
低コストで製造できる方法を提供することを目的
とし、原料空気を予じめガス分離膜で処理して、
酸素の濃度を高めた酸素富化空気とし、この酸素
富化空気を二次原料としてプレツシヤ・スイン
グ・アドソープシヨン方式空気分離装置に送り込
むことを特徴とするものである。 This invention eliminates waste in such conventional air separation methods and efficiently extracts the desired oxygen.
The purpose is to provide a low-cost manufacturing method, and the raw air is treated with a gas separation membrane in advance.
This system is characterized by producing oxygen-enriched air with a high concentration of oxygen, and sending this oxygen-enriched air as a secondary raw material to a pressure swing adsorption type air separation device.
以下図面を参照して、この発明を詳しく説明す
る。 The present invention will be described in detail below with reference to the drawings.
第２図は、この発明の一実施例を示し、酸素を
第１図に示したプレツシヤ・スイング・アドソー
プシヨン方式によつて製造するものである。原料
空気はフアン６によつて酸素分離膜ユニツト７に
送られる。酸素分離膜ユニツト７は、酢酸セルロ
ースやシリンコーンゴムなどの空気中の酸素を窒
素よりもよく透過する酸素透過膜７ａと、この酸
素透過膜７ａの両側の一次室７ｂおよび二次室７
ｃとからなるもので、酸素透過膜７ａの両側の一
次室７ｂと二次室７ｃの間に分圧差を与えると、
高圧側の一次室７ｂから低圧側の二次室７ｃに酸
素が選択的に透過するものである。このようにフ
アン６で大量の原料空気が、酸素分離膜ユニツト
７の一次室７ｂに送られるが、一方、上記ユニツ
ト７の二次室７ｃは、真空ポンプ８で吸引され
て、−100〜−700mmHgの減圧にされている。従つ
て、酸素透過膜７ａの両側に圧力差が与えられて
いるため、一次室７ｂの原料空気中の酸素が、窒
素に優先して酸素透過膜７ａを透過し二次室７ｃ
に流れる。かくして、二次室７ｃ内には酸素濃度
が高くなつた酸素富化空気が得られる。この際、
一次室７ｂには次工程のプレツシヤ・スイング・
アドソープシヨン方式空気分離装置３に送る空気
量の数倍量の空気量を送る必要がある。これは、
酸素透過膜７ａが空気流に対して抵抗体として仂
き、空気流量を制限するためである。このように
して得られた酸素富化空気は、二次原料として従
来と同様に圧縮機２で５Kg／cm2程度に加圧された
のち、プレツシヤ・スイング・アドソープシヨン
方式空気分離装置３に送られ、酸素が製造され
る。 FIG. 2 shows an embodiment of the present invention, in which oxygen is produced by the pressure swing adsorption method shown in FIG. Raw air is sent to an oxygen separation membrane unit 7 by a fan 6. The oxygen separation membrane unit 7 includes an oxygen permeable membrane 7a made of cellulose acetate or silicone rubber that permeates oxygen in the air better than nitrogen, and a primary chamber 7b and a secondary chamber 7 on both sides of the oxygen permeable membrane 7a.
When a partial pressure difference is applied between the primary chamber 7b and the secondary chamber 7c on both sides of the oxygen permeable membrane 7a,
Oxygen selectively permeates from the primary chamber 7b on the high pressure side to the secondary chamber 7c on the low pressure side. In this way, a large amount of raw material air is sent to the primary chamber 7b of the oxygen separation membrane unit 7 by the fan 6, but on the other hand, the secondary chamber 7c of the unit 7 is sucked by the vacuum pump 8, and the The pressure is reduced to 700mmHg. Therefore, since a pressure difference is provided on both sides of the oxygen permeable membrane 7a, oxygen in the raw air in the primary chamber 7b permeates through the oxygen permeable membrane 7a in preference to nitrogen, and is transferred to the secondary chamber 7c.
flows to Thus, oxygen-enriched air with a high oxygen concentration is obtained in the secondary chamber 7c. On this occasion,
In the primary chamber 7b, there is pressure, swing, etc. for the next process.
It is necessary to send an amount of air several times the amount of air sent to the adsorption type air separation device 3. this is,
This is because the oxygen permeable membrane 7a acts as a resistor against the air flow and limits the air flow rate. The oxygen-enriched air thus obtained is used as a secondary raw material and is pressurized to about 5 kg/cm 2 by a compressor 2 in the same manner as before, and then sent to a pressure swing adsorption type air separation device 3. sent to produce oxygen.
このような酸素製造方法によれば、予め原料空
気を酸素分離膜ユニツト７で処理して酸素富化空
気とし、この酸素富化空気を二次原料としてプレ
ツシヤ・スイング・アドソープシヨン方式空気分
離装置５に供給するので、この装置５より得られ
る製品酸素ガス量が大幅に増加し、酸素収率が向
上する。すなわち原料の空気を酸素分離膜ユニツ
ト７によつて処理して、プレツシヤ・スイング・
アドソープシヨン方式空気分離装５置において高
い分離効率が得られる酸素濃度に調整された二次
原料とした後に、該分離装置５に供給するので、
従来法に比較して酸素収率が格段に向上する。ま
た、上記装置５の窒素吸着塔の吸着時間が延長さ
れ、吸着塔のパージ再生時間で短縮され、よつて
吸着塔の小型化が計れる。 According to such an oxygen production method, raw material air is processed in advance in the oxygen separation membrane unit 7 to produce oxygen-enriched air, and this oxygen-enriched air is used as a secondary raw material in a pressure swing adsorption type air separation device. 5, the amount of product oxygen gas obtained from this device 5 is significantly increased, and the oxygen yield is improved. That is, the raw material air is processed by the oxygen separation membrane unit 7, and then the pressure swing
Since the secondary raw material is adjusted to an oxygen concentration that provides high separation efficiency in the adsorption type air separation device 5, and is then supplied to the separation device 5,
Oxygen yield is significantly improved compared to conventional methods. In addition, the adsorption time of the nitrogen adsorption tower of the device 5 is extended, and the purge regeneration time of the adsorption tower is shortened, thereby making it possible to downsize the adsorption tower.
なお、原料空気の供給方式は上記実施例に限ら
れず、圧縮機で加圧して酸素分離膜ユニツトに供
給し、該ユニツトの２次室を大気圧以上にして真
空ポンプを使用しない場合、あるいは原料空気を
圧縮機で加圧して供給して酸素分離膜ユニツトの
２次室側をさらに真空ポンプで吸引した後、再度
圧縮機で昇圧する場合もある。 Note that the method of supplying the raw material air is not limited to the above embodiment, and there are cases in which the raw material air is pressurized by a compressor and supplied to the oxygen separation membrane unit, and the secondary chamber of the unit is set to above atmospheric pressure and a vacuum pump is not used, or the raw material air is In some cases, air is pressurized and supplied by a compressor, and the secondary chamber side of the oxygen separation membrane unit is further suctioned by a vacuum pump, and then the pressure is increased again by the compressor.
以上説明したように、この発明の酸素を製造す
る方法は、プレツシヤ・スイング・アドソープシ
ヨン方式空気分離装置における酸素分離が最適条
件下で行なわれるように、原料となる空気の組成
を酸素分離膜ユニツトによつて調整して、酸素富
化空気とし、その酸素富化空気を二次原料として
プレツシヤ・スイング・アドソープシヨン方式空
気分離装置に送り込むものであるので、分離工程
での酸素の製造収率が大幅に向上し、生産コスト
がこれに伴つて著るしく低下する。また、空気分
離工程での装置の小型化が計られ、設備費が低減
される。さらに、ガス分離膜は空気過器の機能
をも有しているので、空気過器が不要となるな
どの利点を有する。 As explained above, in the method for producing oxygen of the present invention, the composition of the raw air is adjusted to the oxygen separation membrane so that the oxygen separation in the pressure swing adsorption type air separation device is performed under optimal conditions. Since the oxygen-enriched air is adjusted by the unit and sent to the pressure swing adsorption type air separation equipment as a secondary raw material, the production yield of oxygen in the separation process is reduced. efficiency is significantly increased, and production costs are significantly reduced accordingly. Furthermore, the equipment used in the air separation process can be made smaller, reducing equipment costs. Furthermore, since the gas separation membrane also has the function of an air filter, it has the advantage of eliminating the need for an air filter.
第１図は、いずれも従来の酸素の製造方法を示
す概略系統図、第２図は、この発明の酸素の製造
方法の例を示す概略系統図である。
６……フアン、７……酸素分離膜ユニツト。
FIG. 1 is a schematic system diagram showing a conventional oxygen manufacturing method, and FIG. 2 is a schematic system diagram showing an example of the oxygen manufacturing method of the present invention. 6...fan, 7...oxygen separation membrane unit.
Claims (1)
グ・アドソープシヨン方式空気分離装置により分
離して酸素を製造するに際し、この空気分離工程
の前に、酢酸セルロースまたはシリコーンゴムの
酸素透過膜とこの酸素透過膜の両側の一次室およ
び二次室とからなる酸素分離膜ユニツトを設け、
この酸素分離膜ユニツトによつて酸素の濃度を高
めた空気を得、この酸素富化空気を二次原料とし
て上記プレツシヤ・スイング・アドソープシヨン
方式空気分離工程に送ることを特徴とする酸素の
製造方法。1 When air is used as a raw material and is separated using a pressure swing adsorption type air separation device to produce oxygen, before this air separation process, an oxygen permeable membrane made of cellulose acetate or silicone rubber and this oxygen permeable membrane are used. An oxygen separation membrane unit consisting of a primary chamber and a secondary chamber on both sides of the membrane is provided,
Oxygen production characterized in that air with increased oxygen concentration is obtained by this oxygen separation membrane unit, and this oxygen-enriched air is sent as a secondary raw material to the pressure swing absorption type air separation process. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57033407A JPS58151305A (en) | 1982-03-03 | 1982-03-03 | Production of oxygen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57033407A JPS58151305A (en) | 1982-03-03 | 1982-03-03 | Production of oxygen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58151305A JPS58151305A (en) | 1983-09-08 |
| JPH0328363B2 true JPH0328363B2 (en) | 1991-04-18 |
Family
ID=12385739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57033407A Granted JPS58151305A (en) | 1982-03-03 | 1982-03-03 | Production of oxygen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58151305A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59169904A (en) * | 1983-03-16 | 1984-09-26 | Japan Storage Battery Co Ltd | Concentration of oxygen |
| JPS61127609A (en) * | 1984-11-27 | 1986-06-14 | Kobe Steel Ltd | Purification device for helium |
| US4595405A (en) * | 1984-12-21 | 1986-06-17 | Air Products And Chemicals, Inc. | Process for the generation of gaseous and/or liquid nitrogen |
| US4701187A (en) * | 1986-11-03 | 1987-10-20 | Air Products And Chemicals, Inc. | Process for separating components of a gas stream |
| JPH02307805A (en) * | 1989-05-22 | 1990-12-21 | Nippon Sanso Kk | Oxygen production apparatus |
| CN103723681A (en) * | 2013-12-13 | 2014-04-16 | 科迈（常州）电子有限公司 | Household oxygenerator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5472778A (en) * | 1977-11-02 | 1979-06-11 | Monsanto Co | Method of separating gas mixture |
| JPS5651223A (en) * | 1979-06-18 | 1981-05-08 | Monsanto Co | Selective adsorbing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5878494U (en) * | 1981-11-20 | 1983-05-27 | 大阪瓦斯株式会社 | air separation equipment |
-
1982
- 1982-03-03 JP JP57033407A patent/JPS58151305A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5472778A (en) * | 1977-11-02 | 1979-06-11 | Monsanto Co | Method of separating gas mixture |
| JPS5651223A (en) * | 1979-06-18 | 1981-05-08 | Monsanto Co | Selective adsorbing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58151305A (en) | 1983-09-08 |
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