JPH04113174A - Method of manufacturing air of low temperature - Google Patents
Method of manufacturing air of low temperatureInfo
- Publication number
- JPH04113174A JPH04113174A JP23388090A JP23388090A JPH04113174A JP H04113174 A JPH04113174 A JP H04113174A JP 23388090 A JP23388090 A JP 23388090A JP 23388090 A JP23388090 A JP 23388090A JP H04113174 A JPH04113174 A JP H04113174A
- Authority
- JP
- Japan
- Prior art keywords
- air
- liquid
- temperature
- compressed
- liquid nitrogen
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 90
- 239000003570 air Substances 0.000 claims abstract description 79
- 239000007788 liquid Substances 0.000 claims abstract description 78
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 43
- 229910052786 argon Inorganic materials 0.000 claims abstract description 31
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000009834 vaporization Methods 0.000 claims description 7
- 230000008016 vaporization Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 13
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 2
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/28—Quick cooling
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、任意の温度の低温空気を工業的に大量、安
価に製造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method for industrially producing low-temperature air at any temperature in large quantities at low cost.
従来の技術
鋳物の冷却や大型鋼類試験における冷却、あるイハアル
ミニウム、銅等の押出成形機のダイス等の冷却等、大量
の低温空気や低温不活性ガスを吹付けて急速に冷却する
場合、大量の低温空気や不活性低温ガスが使用される。Conventional technology Cooling of castings, cooling of large steel tests, cooling of dies, etc. of extrusion molding machines for aluminum, copper, etc., when rapidly cooling by blowing a large amount of low-temperature air or low-temperature inert gas, Large quantities of cold air or inert cold gases are used.
しかし、低温空気のうち常温〜−３０℃までの低温空気
の製造方法としては、冷凍機と熱交換器を組合せた技術
的が経済的に確立されている。However, as a method for producing low-temperature air from room temperature to -30° C., a technology that combines a refrigerator and a heat exchanger has been economically established.
例えば、冷凍機により冷却された低温液フロン等の冷媒
と冷却ガスを、熱交換器内において熱交換せしめ、冷凍
機膨張弁の制御により予め設定された設定温度に調整す
る装置（実開平１−１３５１１２号公報）等が提案゛さ
れている。For example, a device that exchanges heat between a refrigerant such as low-temperature liquid Freon cooled by a refrigerator and cooling gas in a heat exchanger, and adjusts the temperature to a preset temperature by controlling a refrigerator expansion valve. 135112) etc. have been proposed.
また、−１９０℃での冷凍については、液体窒素を利用
する方法が公知である。Furthermore, for freezing at -190°C, a method using liquid nitrogen is known.
一方、空気をその液化点付近で精製分離する方法が、今
日でも酸素、窒素およびアルゴン製造用の主流として用
いられている。On the other hand, the method of purifying and separating air near its liquefaction point is still used today as the main method for producing oxygen, nitrogen, and argon.
この液化分離装置は、原料空気圧縮工程、不純物除去工
程、冷熱回収および冷熱発生工程（熱交換器、膨張機）
、精留工程、製品貯蔵圧送工程に大別できる。不純物除
去は、主として水分と炭酸ガスを対象とするもので、中
小容量の場合、合成ゼオライトによる吸着器が広く使用
され、大容量の場合は蓄冷器または再生式熱交換器が一
般に用いられる。This liquefaction separation equipment consists of a raw material air compression process, an impurity removal process, a cold heat recovery process, and a cold heat generation process (heat exchanger, expander).
It can be broadly divided into , rectification process, and product storage and pumping process. Impurity removal primarily targets moisture and carbon dioxide gas, and adsorbers made of synthetic zeolite are widely used for small to medium capacity, while regenerators or regenerative heat exchangers are generally used for large capacity.
熱交換器としては、アルミプレートフィン式が、また、
冷熱発生用膨張機としては、半径流反動式膨張タービン
が多く用いられる。As a heat exchanger, there is an aluminum plate fin type, and
A radial reaction type expansion turbine is often used as an expander for generating cold heat.
しかし、任意の温度の低温空気を工業的に大量、安価に
製造する技術は、いまだに確立されていない。However, a technology for industrially producing large quantities of low-temperature air at a desired temperature at low cost has not yet been established.
発明が解決しようとする課題
前記の冷凍機と熱交換機を組合せる方法は、０〜−３０
℃程度の低温空気しか製造できず、また、設備そのもの
が大型化し、経済的に有利な方法ではない。Problems to be Solved by the Invention The method of combining the above-mentioned refrigerator and heat exchanger is
It is not an economically advantageous method because it can only produce air at a low temperature of about ℃, and the equipment itself becomes large.
この発明の目的は、工業的規模で、大量、安価に任意温
度の低温空気を製造する方法を提供することである。An object of the present invention is to provide a method for producing low-temperature air at any temperature on an industrial scale, in large quantities, and at low cost.
課題を解決するための手段
本発明者らは、上記目的を達成すべく種々検討の結果、
圧縮した原料空気と加圧した液体窒素、液体空気あるい
は液体アルゴンのうちの１種または２種以上を混合すれ
ば、液体窒素、液体空気あるいは液体アルゴンの蒸発潜
熱と顕然によって圧縮空気が冷却されると共に、ガス化
した窒素、空気あるいはアルゴンの混入した低温空気が
得られること、また、液体窒素、液体空気あるいは液体
アルゴンの混合割合を制御することによって、０〜−１
８０℃の間の任意温度の低温空気を調整できることを究
明し、この発明に到達した。Means for Solving the Problems As a result of various studies to achieve the above object, the present inventors found that
When compressed raw air is mixed with one or more of pressurized liquid nitrogen, liquid air, or liquid argon, the compressed air is cooled by the latent heat of vaporization of liquid nitrogen, liquid air, or liquid argon. In addition, by controlling the mixing ratio of liquid nitrogen, liquid air, or liquid argon, it is possible to obtain low-temperature air mixed with gasified nitrogen, air, or argon.
We have discovered that it is possible to adjust low-temperature air at any temperature between 80°C and have arrived at this invention.
すなわちこの発明は、圧縮機で圧縮した原料圧縮空気と
、加圧された液体窒素、液体空気あるいは液体アルゴン
のうちの１種または２種以上をそれぞれ流量調整弁を介
して混合器に供給し、液体窒素、液体空気あるいは液体
アルゴンの蒸発潜熱と顕然により圧縮空気を冷却すると
共に、ガス化した窒素、空気あるいはアルゴンと混合す
るのである。That is, this invention supplies raw material compressed air compressed by a compressor and one or more of pressurized liquid nitrogen, liquid air, or liquid argon to a mixer through flow rate adjustment valves, The compressed air is cooled by the latent heat of vaporization of liquid nitrogen, liquid air, or liquid argon, and mixed with gasified nitrogen, air, or argon.
また、加圧された液体窒素、液体空気あるいは液体アル
ゴンの供給量を制御して低温空気の温度を調整するので
ある。In addition, the temperature of the low-temperature air is adjusted by controlling the supply amount of pressurized liquid nitrogen, liquid air, or liquid argon.
作 用
この発明においては、圧縮機で圧縮した原料圧縮空気と
、加圧された液体窒素、液体空気あるいは液体アルゴン
の１種または２種以上をそれぞれ流量調整弁を介して混
合器に供給して混合し、液体窒素、液体空気あるいは液
体アルゴンの蒸発潜熱と顕然により圧縮空気を冷却する
と共に、ガス化した窒素、空気あるいはアルゴンと混合
するので、液体窒素、液体空気あるいは液体アルゴンの
潜熱と顕然の両方が有効利用できると共に、ガス化した
窒素、空気あるいはアルゴンは、低温空気として利用す
るから、経済的に有利である。Function In this invention, raw compressed air compressed by a compressor and one or more of pressurized liquid nitrogen, liquid air, or liquid argon are supplied to the mixer through flow rate regulating valves. The compressed air is cooled by the latent heat of vaporization of liquid nitrogen, liquid air, or liquid argon and the latent heat of vaporization of liquid nitrogen, liquid air, or liquid argon is mixed. Both gases can be used effectively, and gasified nitrogen, air, or argon can be used as low-temperature air, which is economically advantageous.
また、加圧された液体窒素、液体空気あるいは液体アル
ゴンの供給量を制御して低温空気の温度を調整するので
、０〜−１８０℃の間の任意の温度の低温空気を安定し
て製造することができる。In addition, the temperature of the low-temperature air is adjusted by controlling the supply amount of pressurized liquid nitrogen, liquid air, or liquid argon, so low-temperature air at any temperature between 0 and -180°C can be stably produced. be able to.
なお、圧縮空気の冷却に加圧した液体窒素、液体空気あ
るいは液体アルゴンを用いたのは、０〜１８０℃の低温
空気を得るためには、−２００℃程度の沸点を有してい
る冷媒が必要である。しかし液体窒素、液体空気あるい
は液体アルゴンを使用すれば、蒸発潜熱ならびに顕然の
双方を利用できるばかりでなく、ガス化した窒素、空気
あるいはアルゴンは、低温空気として使用できるという
利点を有する。The reason why pressurized liquid nitrogen, liquid air, or liquid argon is used to cool compressed air is that in order to obtain low-temperature air between 0 and 180 degrees Celsius, a refrigerant with a boiling point of about -200 degrees Celsius is used. is necessary. However, the use of liquid nitrogen, liquid air or liquid argon has the advantage that not only can both latent and actual heat of vaporization be utilized, but gasified nitrogen, air or argon can also be used as cold air.
なお、液体窒素、液体空気あるいは液体アルゴンのいず
れも使用できるが、液体窒素を使用するのが経済的に有
利である。Although liquid nitrogen, liquid air, or liquid argon can be used, it is economically advantageous to use liquid nitrogen.
実施例
第１図は、この液体窒素を用いて本発明方法を実施する
試験装置の一例を示す系統図である。Embodiment FIG. 1 is a system diagram showing an example of a test apparatus for carrying out the method of the present invention using this liquid nitrogen.
第１図において、空気（１）は圧縮機（２）により２〜
５ｋｇ／ｃｍ”程度まで圧ｗ３されたのち、脱湿器（３
）で水分が除去され、流量調節弁（４）、流量計（５）
を介して混合器（６）に供給される。In Figure 1, air (1) is compressed by a compressor (2) to
After the pressure w3 has been increased to about 5 kg/cm”, use a dehumidifier (3
), the water is removed by the flow control valve (4) and the flow meter (5).
to the mixer (6).
一方、液体窒素（７）は、低温容器等（８）から７〜１
０ｋｇ／ ｃｍ”程度に加圧された状態で流量調節弁（
９）を介して混合器（６）に供給される。On the other hand, liquid nitrogen (7) is supplied from a cryogenic container (8) to 7 to 1
When pressurized to approximately 0 kg/cm", open the flow control valve (
9) to the mixer (6).
混合器（６）に供給された圧縮空気（１）と液体窒素（
７）は、混合器（６）で混合され、圧縮空気（１）は液
体窒素（７）の蒸発潜熱と顕然により冷却されて低温空
気となり、ガス化した窒素ガスは、低温空気の一部とな
って混合機（６）の出口から排出される。Compressed air (1) and liquid nitrogen (
7) is mixed in the mixer (6), and the compressed air (1) is cooled by the latent heat of vaporization and heat of liquid nitrogen (7) to become low-temperature air, and the gasified nitrogen gas is a part of the low-temperature air. and is discharged from the outlet of the mixer (6).
混合機（６）から排出された低温空気は、配管（１０）
により冷却目的物まで導かれ、吹付けられる。低温空気
の温度は、冷却目的物に応じて流量調整弁（９）の開度
を調整して液体窒素（７）量を制御し、所定の温度に調
節される。The low temperature air discharged from the mixer (6) is transferred to the pipe (10)
is guided to the object to be cooled and sprayed. The temperature of the low-temperature air is adjusted to a predetermined temperature by controlling the amount of liquid nitrogen (7) by adjusting the opening degree of the flow rate regulating valve (9) depending on the object to be cooled.
なお、混合器（６）としては、噴霧式、邪魔板式、旋回
羽根式あるいは充填物式等を使用することができる。In addition, as the mixer (6), a spray type, baffle plate type, swirl vane type, packed type, etc. can be used.
実施例Ｉ
第１図に示す試験装置を使用し、３ｋｇ／ｃｍ” に圧
縮した３０℃の圧縮空気を １．７Ｎｍ３／ ｍｉｎで
噴霧式混合器（６）に供給し、他方７ｋｇ／ ｃｍ’
に加圧した液体窒素を １．５１７ｍ１ｎで噴霧供給し
、低温空気を製造した。Example I Using the test apparatus shown in Figure 1, compressed air at 30°C compressed to 3 kg/cm' was supplied to the spray mixer (6) at 1.7 Nm3/min, and the other was 7 kg/cm'
Liquid nitrogen pressurized to 1.517 mL was sprayed and supplied to produce low-temperature air.
そして混合器（６）出口からの低温空気温度と送入開始
からの経過時間ならびに低温空気流量を測定した。その
結果を第２図に示す。Then, the temperature of the low-temperature air from the outlet of the mixer (6), the elapsed time from the start of feeding, and the flow rate of the low-temperature air were measured. The results are shown in FIG.
第２図に示すとおり、１０分経過後から一７５℃の低温
空気が安定して得られており、安定して低温空気を供給
できることを示している。As shown in FIG. 2, low-temperature air of -75° C. was stably obtained after 10 minutes, indicating that low-temperature air could be stably supplied.
実施例２
実施例１で使用した試験装置を用い、温度３０℃の圧縮
乾燥空気の供給量をＩＮｍ’／ｈｒとし、液体窒素また
は液体アルゴンの供給量を ０．３〜２．４１／ｈｒの
間で変化せしめ、液体窒素または液体アルゴンの供給量
と出口空気温度の関係を測定した。Example 2 Using the test apparatus used in Example 1, the supply rate of compressed dry air at a temperature of 30°C was set to INm'/hr, and the supply rate of liquid nitrogen or liquid argon was set to 0.3 to 2.41/hr. The relationship between the supply amount of liquid nitrogen or liquid argon and the outlet air temperature was measured.
その結果を第３図に示す。The results are shown in FIG.
第３図に示すとおり、液体窒素または液体アルゴンの供
給量を調節することにより、出口空気温度を０〜−１８
０℃の範囲で自在にコントロールすることができる。As shown in Figure 3, by adjusting the supply amount of liquid nitrogen or liquid argon, the outlet air temperature can be adjusted from 0 to -18.
It can be freely controlled within the range of 0°C.
発明の効果
以上述べたとおり、この発明方法によれば、液体窒素、
液体空気あるいは液体アルゴンの潜熱と顕然の双方を有
効利用できると共に、ガス化した窒素、空気あるいはア
ルゴンを低温空気の一部として使用できるから、きわめ
て経済的である。しかも、液体窒素、液体空気あるいは
液体アルゴンの供給量を制御することにより、任意の温
度の低温空気を安定して製造することができるから、被
冷却対象物に応じて最適温度の低温空気を安定供給する
ことができる。Effects of the invention As described above, according to the method of the invention, liquid nitrogen,
It is extremely economical because both the latent and explicit heat of liquid air or liquid argon can be effectively utilized, and gasified nitrogen, air, or argon can be used as part of the low-temperature air. Moreover, by controlling the supply amount of liquid nitrogen, liquid air, or liquid argon, it is possible to stably produce low-temperature air at any temperature, so low-temperature air can be stably produced at the optimal temperature depending on the object to be cooled. can be supplied.
第１図はこの発明方法を実施する装置の一例を示す系統
図、第２図は実施例１における低温空気温度と送入開始
からの経過時間ならびに低温空気流量との関係を示すグ
ラフ、第３図は実施例２における液体窒素および液体ア
ルゴンの供給量と低温空気温度との関係を示すグラフで
ある。
７・液体窒素、
１０・配管、
８ 低温容器等、FIG. 1 is a system diagram showing an example of an apparatus for carrying out the method of the present invention, FIG. 2 is a graph showing the relationship between low temperature air temperature, elapsed time from the start of feeding, and low temperature air flow rate in Example 1, and FIG. The figure is a graph showing the relationship between the supply amount of liquid nitrogen and liquid argon and the low temperature air temperature in Example 2. 7. Liquid nitrogen, 10. Piping, 8. Low temperature container, etc.
Claims (1)
、液体空気あるいは液体アルゴンのうちの１種または２
種以上をそれぞれ流量調整弁を介して混合器に供給し、
液体窒素、液体空気あるいは液体アルゴンの蒸発潜熱と
顕然により圧縮空気を冷却すると共に、ガス化した窒素
、空気あるいはアルゴンと混合することを特徴とする低
温空気の製造方法。 ２ 加圧された液体窒素、液体空気あるいは液体アルゴ
ンの供給量を制御して低温空気の温度を調整することを
特徴とする請求項１記載の低温空気の製造方法。[Claims] 1. Compressed air compressed by a compressor, and one or two of pressurized liquid nitrogen, liquid air, or liquid argon.
Each of the seeds or more is supplied to the mixer via a flow rate adjustment valve,
A method for producing low-temperature air, which comprises cooling compressed air using the latent heat of vaporization of liquid nitrogen, liquid air, or liquid argon, and mixing the compressed air with gasified nitrogen, air, or argon. 2. The method for producing low-temperature air according to claim 1, wherein the temperature of the low-temperature air is adjusted by controlling the supply amount of pressurized liquid nitrogen, liquid air, or liquid argon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23388090A JPH04113174A (en) | 1990-09-03 | 1990-09-03 | Method of manufacturing air of low temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23388090A JPH04113174A (en) | 1990-09-03 | 1990-09-03 | Method of manufacturing air of low temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04113174A true JPH04113174A (en) | 1992-04-14 |
Family
ID=16962014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23388090A Pending JPH04113174A (en) | 1990-09-03 | 1990-09-03 | Method of manufacturing air of low temperature |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04113174A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103768880A (en) * | 2014-02-14 | 2014-05-07 | 王燕春 | Nanofiltration membrane generator |
-
1990
- 1990-09-03 JP JP23388090A patent/JPH04113174A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103768880A (en) * | 2014-02-14 | 2014-05-07 | 王燕春 | Nanofiltration membrane generator |
| CN103768880B (en) * | 2014-02-14 | 2015-12-23 | 王燕春 | Receive film generator |
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