JPH0293282A - Method and device for manufacture of liquid nitrogen and nitrogen gas - Google Patents
Method and device for manufacture of liquid nitrogen and nitrogen gasInfo
- Publication number
- JPH0293282A JPH0293282A JP63244103A JP24410388A JPH0293282A JP H0293282 A JPH0293282 A JP H0293282A JP 63244103 A JP63244103 A JP 63244103A JP 24410388 A JP24410388 A JP 24410388A JP H0293282 A JPH0293282 A JP H0293282A
- Authority
- JP
- Japan
- Prior art keywords
- nitrogen
- nitrogen gas
- gas
- liquid nitrogen
- liquid
- 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
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 124
- 229910001873 dinitrogen Inorganic materials 0.000 title claims abstract description 50
- 239000007788 liquid Substances 0.000 title claims abstract description 40
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims 2
- 239000002994 raw material Substances 0.000 claims 2
- 238000001179 sorption measurement Methods 0.000 claims 2
- 238000002203 pretreatment Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 20
- 239000012528 membrane Substances 0.000 abstract description 5
- 239000012467 final product Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- QGZKDVFQNNGYKY-NJFSPNSNSA-N nitrogen-16 Chemical compound [16NH3] QGZKDVFQNNGYKY-NJFSPNSNSA-N 0.000 abstract 1
- 238000007781 pre-processing Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005138 cryopreservation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
- F25J1/0275—Construction and layout of liquefaction equipments, e.g. valves, machines adapted for special use of the liquefaction unit, e.g. portable or transportable devices
- F25J1/0276—Laboratory or other miniature devices
-
- 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
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0012—Primary atmospheric gases, e.g. air
- F25J1/0015—Nitrogen
-
- 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
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/60—Processes or apparatus using other separation and/or other processing means using adsorption on solid adsorbents, e.g. by temperature-swing adsorption [TSA] at the hot or cold end
-
- 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
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/80—Processes or apparatus using other separation and/or other processing means using membrane, i.e. including a permeation step
-
- 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
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/40—Air or oxygen enriched air, i.e. generally less than 30mol% of O2
-
- 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
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2280/00—Control of the process or apparatus
- F25J2280/02—Control in general, load changes, different modes ("runs"), measurements
-
- 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
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
- F25J2290/62—Details of storing a fluid in a tank
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Separation Of Gases By Adsorption (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、液体窒素および窒素ガス発生装置に係り、特
に各研究所における細胞や精子などの冷凍保存、医療用
、スパーコンビ、−夕等のＣＰＵボード冷却、Ｊ！に小
容量窒素ガスの要求に好適な製造方法及びｇｔ置に関す
るものである。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a liquid nitrogen and nitrogen gas generator, and is particularly applicable to cryopreservation of cells and sperm in various laboratories, medical use, super combinations, etc. CPU board cooling, J! The present invention relates to a production method and a gt system suitable for meeting the requirements for a small volume of nitrogen gas.
従来の装置は、窒素Ｐ８Ａに関して特公昭５４−１７５
９５号、特公昭５６−９４４２号、特公昭５６−４０６
２４号（東し）などがある。一方、液化に用いるＨｅ冷
凍機に関しては、特開昭６０〜２５３７６９号、特開昭
６１−３８３６３番、特開昭６２−１４２９８３番、特
開昭６２−２０６３５５号など多数がある。Conventional equipment is manufactured by Japanese Patent Publication No. 54-175 regarding nitrogen P8A.
No. 95, Special Publication No. 56-9442, Special Publication No. 56-406
There is No. 24 (East), etc. On the other hand, regarding He refrigerators used for liquefaction, there are many such as JP-A-60-253769, JP-A-61-38363, JP-A-62-142983, and JP-A-62-206355.
しかし、これら単独のものは出ているものの、窒素ガス
発生装置と液化装置とを組合わせ、しかも研究所向の数
１−ＬＮ２／日〜数１０Ｊ−ＬＮ２／日規模の液体１！
素の発生装置は見当らない。（ＳＵＬＺｇＲ（Ｍ）が、
精留埼と膨張タービシとの組ＭＩＮ。However, although these stand-alone devices are available, they combine a nitrogen gas generator and a liquefaction device, and moreover, they are suitable for research laboratories and can produce liquids of several 1-LN2/day to several 10 J-LN2/day!
No original generator was found. (SULZgR(M) is
The combination of Seiryusaki and Expansion Turbishi is MIN.
合せで １２０／−ＬＮ２／日という内容の文献発
表している。A total of 120/-LN2/day has been published.
上記従来技術は装置の小型化について配慮がされておら
ず、更に、液体窒素とともにＭ素ガスを合わせて取り出
せないという欠点があった。The above-mentioned conventional technology does not take into account the miniaturization of the device, and further has the disadvantage that M gas cannot be taken out together with liquid nitrogen.
本発明の目的は、小容量でコンパクトな液体窒素および
ｇ１ｓガスの製造方法及び装置を提供することにある。An object of the present invention is to provide a method and apparatus for producing liquid nitrogen and g1s gas that are small in volume and compact.
上記目的は、ＧＮ２（！ｌ！＄ガス）製造装置とＨｅ冷
凍機の間にある容量のＧＮｚ（！素ガス）タンクを設け
、ＬＮ２（液体窒素）の製造はデユワ−の液面制御＃
Ｇ Ｎ２ （皇室ガス）の製造はＧＮ２（窒素ガス）タ
ンクの圧力で、原料空気供給コンプレッサに１ンローダ
をかませる（圧力制御）ことにより、達成される。The above purpose is to install a GNz (! elementary gas) tank with a capacity between the GN2 (!l! $ gas) production equipment and the He refrigerator, and to manufacture LN2 (liquid nitrogen) using the dewar liquid level control #
The production of GN2 (Imperial Gas) is achieved at the pressure of the GN2 (Nitrogen Gas) tank by connecting a feed air supply compressor with a loader (pressure control).
！１票ガス製造をＰａＡ法又は膜分離法で行なった後、
窒素ガスを一旦、ＧＮｚタンクに貯蔵する。! After producing gas using the PaA method or membrane separation method,
Nitrogen gas is temporarily stored in a GNz tank.
このタンクは、ＧＮｚタンクの脈動防止となり、Ｈｅ冷
凍機および製品としてＧＮ２を安定供給する。また、Ｇ
Ｎ２製造は、二のタンクの圧力変化により原料空気供給
コンプレッサを０Ｎ−ＯＦＦさせて行なう。一方、ＬＮ
２製造は、デユワ−（ＬＮ２貯槽）変化によりＧＮｚタ
ンク後の供給バルブの０Ｎ−ＯＦＦで行なうので、誤動
作することがない。This tank prevents pulsation of the GNz tank and stably supplies GN2 as a He refrigerator and product. Also, G
N2 production is performed by turning off the raw air supply compressor by changing the pressure of the second tank. On the other hand, LN
2 production is carried out with the supply valve after the GNz tank ON-OFF due to the dewar (LN2 storage tank) change, so there is no malfunction.
以下、本発明の一実施例を第１図および第２図により説
明する。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
図において、原料空気１は、フィルター２で除塵後、コ
ンブレ雫す（ベビコン）３で所定の圧力にまで昇圧され
、まず、Ｃ０２（二酸化炭素）とＮ２０（水）が前処理
（Ｐ８人）装置４で除去される。ドライＩこなりた原料
空気は、配管５を介して窒素ガス製造装置６へ供給され
窒素が濃縮される。In the figure, raw air 1 is dedusted with a filter 2, and then pressurized to a predetermined pressure in a Combre Droplet (Bebicon) 3. First, C02 (carbon dioxide) and N20 (water) are pretreated (P8 people) in a pretreatment device. It is removed in 4. The dry raw air is supplied to a nitrogen gas production device 6 via a pipe 5, and nitrogen is concentrated therein.
窒素ガス製造装置６としては、２８人（装置は前処環装
！４と同じで吸着剤を酸素吸着剤とする）若しくは膜分
離装置７を使用する。９５％以上に濃縮された９１素ガ
スは、配管８を介してＧＮ、タンク（窒素ガスタンク）
９へ供給され一旦ここに貯蔵された形となる。なお窒素
ガス製造装置６で生じた酸素リッチな排ガスは、配管ｌ
Ｏを介して系外へ放出される。As the nitrogen gas production device 6, 28 people (the device is the same as the pretreatment ring system! 4, and the adsorbent is an oxygen adsorbent) or a membrane separation device 7 are used. The 91 element gas concentrated to 95% or more is transferred to GN and a tank (nitrogen gas tank) via piping 8.
9 and is temporarily stored there. Note that the oxygen-rich exhaust gas generated in the nitrogen gas production device 6 is
It is released to the outside of the system via O.
ＧＮＺタンク（窒素ガスタンク）９へ貯蔵された窒素ガ
スは、一部は製品ガスとして配管１１を介して取り出さ
れ、もう一方はＬＮ２（液体窒素）用ガスとして配管１
２を介してデユワ−１３へ供給される。Part of the nitrogen gas stored in the GNZ tank (nitrogen gas tank) 9 is taken out as a product gas through the pipe 11, and the other part is taken out as the LN2 (liquid nitrogen) gas through the pipe 1.
2 to the dewar 13.
ここでＧＮｚタンク（窒素ガスタンク）９は、窒素ガス
製造装置６で生ずる脈動を減少し、製品ガスやＬＮｚ用
ガスを安定供給するとともに、窒素ガス製造もシトロー
ルする役割を持つ。窒素ガスは、およそ５Ｋｐ／ｄＧで
製造され、このＧ Ｎ Ｚタンク（窒素ガスタンク）９
は貯蔵される。製品ガスの最低圧力（任意。但し５Ｋｐ
／ｃｄＱ以下）と最高圧力５ Ｋｐ ／ ｃｓｊ Ｇを
圧力スイッチ１４で設定し、コンプレッサ３を最低圧力
でＯＮ、ｆｉ高圧力でＯＦＦとなるようにすれば、常時
この圧力範囲の窒素ガスを、効率よ（採ることができる
。なお、ＬＮ２（液体窒素）用ガスは、はぼ大気圧にま
で減圧弁１５で減圧されてデユワ−１３へ送られるため
、供給が途切れることはない。Here, the GNz tank (nitrogen gas tank) 9 has the role of reducing pulsations occurring in the nitrogen gas production device 6, stably supplying product gas and LNz gas, and also controlling nitrogen gas production. Nitrogen gas is produced at approximately 5 Kp/dG, and this G N Z tank (nitrogen gas tank) 9
is stored. Minimum pressure of product gas (optional, but 5Kp
/cdQ or less) and maximum pressure 5 Kp/csj G with the pressure switch 14, and if the compressor 3 is turned on at the lowest pressure and turned off at fi high pressure, nitrogen gas in this pressure range can be constantly supplied efficiently. Note that the LN2 (liquid nitrogen) gas is reduced in pressure to almost atmospheric pressure by the pressure reducing valve 15 and sent to the dewar 13, so the supply is never interrupted.
次に、ＬＮ２（液体窒素）は、ＧＮｚタンク（窒素ガス
タンク）９より供給されたＬＮｚ用ガスをデユワ−１３
で液化することにより得られる。このデユワ−８は、真
空保冷容器となっており、Ｈｅ冷凍機１７が、ＬＮ２用
ガス入口やＬＮ２取り出しポンプ１８とともにデユワ−
１３上部に設けられ、そのコールヘッド１９がデユワ−
１３内に挿入されている。供給されたＬＮ２用ガスは、
デユワ−１３でこのコールへブト１９により７７Ｋにま
で冷却され液化してこのデユワ−１３に貯蔵される。こ
のデユワ−１３には、ＬＮ２（液体窒素） ｔ６の液面
計量が設けてあり、最低レベルで減圧弁１５が開、最高
レベルで減圧弁巧が閉となるようにしであるとともに、
Ｈｅ冷凍１１１１７へ圧縮ヘリウムを配管４を介して供
給するＨａ圧縮機ｎを最低レブルでＯＮ、最高レベルで
ＯＦＦになるようにセプトしである。これにより、ＬＮ
２（液体窒素）１６を不足することなくかつ過剰生産す
ることなく効率良く製造することが可能となる。Next, for LN2 (liquid nitrogen), the LNz gas supplied from the GNz tank (nitrogen gas tank) 9 is transferred to the dewar 13.
It can be obtained by liquefying it. This dewar 8 is a vacuum cold storage container, and the He refrigerator 17 is installed in the dewar together with the LN2 gas inlet and the LN2 take-out pump 18.
13, and its call head 19 is installed on the upper part of the dewar.
It is inserted in 13. The supplied LN2 gas is
In the dewar 13, it is cooled down to 77K by the coal reactor 19, liquefied, and stored in the dewar 13. This dewar 13 is equipped with a liquid level meter for LN2 (liquid nitrogen) t6, and the pressure reducing valve 15 is opened at the lowest level and closed at the highest level.
The Ha compressor n, which supplies compressed helium to the He refrigerator 11117 via the pipe 4, is set so that it is turned on at the lowest level and turned off at the highest level. This allows LN
2 (liquid nitrogen) 16 can be efficiently manufactured without running out or overproducing.
本実施例によれば、小容量のＬ Ｎ２ 、又はＯＮ２が
効率良く製造でき、コンパクトな装置が得られるので各
研究所等でも容易に備えつけられる。According to this embodiment, a small capacity of L N2 or ON2 can be efficiently manufactured and a compact device can be obtained, so that it can be easily installed in each research institute.
本発明によれば、小容量の液体窒素および窒素ガスが効
率良く入手できると共に、コンパクトな装置が構成でき
る。According to the present invention, small volumes of liquid nitrogen and nitrogen gas can be obtained efficiently, and a compact device can be constructed.
第１図は本発明の一実施例の液体窒素および窒素ガスの
製造装置の概略系統図、第２図は本発明の膜分離装置部
の概略図である。
２・・・・・・フィルター、３・・間コンプレツサ、４
・・・随処理装置、６・・曲窒素ガス製造装置、７・・
１膜分離装置、９・・・・・・ＧＮ２タンク、１３・・
曲デユワ−１４・・・・・・圧力スイプチ、１５・・曲
減圧弁、１６・・曲ＬＮ２．１７・・・・・・Ｈｅ冷凍
機、１８・・・・・・ＬＮ２取出しポンプ、１９・・・
・・・コールヘッド、圓・・−ＬＮｚ液＋Ｔｉ１ｔ、２
２・・曲Ｈｅ圧縮機FIG. 1 is a schematic system diagram of an apparatus for producing liquid nitrogen and nitrogen gas according to an embodiment of the present invention, and FIG. 2 is a schematic diagram of a membrane separation apparatus section of the present invention. 2... Filter, 3... Compressor, 4
... Associated processing equipment, 6... Curved nitrogen gas production equipment, 7...
1 membrane separator, 9...GN2 tank, 13...
Song dewar-14... Pressure switch, 15... Song pressure reducing valve, 16... Song LN2.17... He refrigerator, 18... LN2 take-out pump, 19...・・・
... Coal head, round ... -LNz liquid + Ti1t, 2
2. He compressor
Claims (1)
法において、 前記窒素濃縮に圧力スィング吸着（Ｐ．Ｓ．Ａ．）法を
用い、濃縮された窒素の液化にＨｅ冷凍機を用いて、液
体窒素と窒素ガスとを同時に供給することを特徴とする
液体窒素及び窒素ガスの製造方法。 ２、昇圧された原料空気中の不純物を除去後、さらに、
酸素分を除去し、濃縮された窒素ガスを一旦タンクに貯
蔵すると共に、該貯蔵されたタンクから供給される窒素
ガスをＨｅ冷凍機を用いた容器で液化させ、液体窒素と
窒素ガスとを同時に供給することを特徴とする液体窒素
及び窒素ガスの製造方法。 ３、特許請求の範囲第２項において、窒素ガスは貯蔵タ
ンクの圧力で原料空気の昇圧量を制御し、液体窒素は容
器の液面高さにより窒素ガスの供給量を制御することを
特徴とする液体窒素及び窒素ガスの製造方法。 ４、原料空気中の窒素を濃縮して液体窒素を製造する装
置において、 前記窒素濃縮に圧力スィング吸着（Ｐ．Ｓ．Ａ．）塔を
設け、濃縮された窒素の液化にＨｅ冷凍機を備えたデュ
ワを設けたことを特徴とする液体窒素及び窒素ガスの製
造装置。 ５、昇圧された原料空気の不純物を除去する前処理装置
と、その後流にタンクを備えた窒素ガス製造装置を設け
ると共に、前記タンクから供給される窒素ガスを液化さ
せる冷凍機を備えたデュワを設けたことを特徴とする液
体窒素及び窒素ガスの製造装置。 ６、特許請求の範囲第５項において、液体窒素はデュワ
の液面高さ、窒素ガスはタンク内の窒素ガス圧力により
それぞれ制御し、液体窒素と窒素ガスとを同時に供給す
ることを特徴とする液体窒素及び窒素ガスの製造装置。[Claims] 1. A method for producing liquid nitrogen by concentrating nitrogen in raw air, comprising: using a pressure swing adsorption (P.S.A.) method for the nitrogen concentration, and liquefying the concentrated nitrogen; A method for producing liquid nitrogen and nitrogen gas, characterized in that liquid nitrogen and nitrogen gas are simultaneously supplied using a He refrigerator. 2. After removing impurities from the pressurized raw material air, further
The oxygen content is removed and the concentrated nitrogen gas is temporarily stored in a tank, and the nitrogen gas supplied from the stored tank is liquefied in a container using a He refrigerator to simultaneously produce liquid nitrogen and nitrogen gas. A method for producing liquid nitrogen and nitrogen gas, characterized by supplying liquid nitrogen and nitrogen gas. 3. Claim 2 is characterized in that for nitrogen gas, the amount of pressurization of raw air is controlled by the pressure of the storage tank, and for liquid nitrogen, the supply amount of nitrogen gas is controlled by the height of the liquid level in the container. A method for producing liquid nitrogen and nitrogen gas. 4. In an apparatus for producing liquid nitrogen by concentrating nitrogen in raw air, a pressure swing adsorption (P.S.A.) column is provided for the nitrogen concentration, and a He refrigerator is provided for liquefying the concentrated nitrogen. A device for producing liquid nitrogen and nitrogen gas, characterized in that it is equipped with a dewar. 5. A dewar equipped with a pre-treatment device for removing impurities from the pressurized raw material air and a nitrogen gas production device equipped with a tank downstream thereof, as well as a refrigerator that liquefies the nitrogen gas supplied from the tank. A manufacturing device for liquid nitrogen and nitrogen gas, characterized in that it is provided with: 6. Claim 5 is characterized in that the liquid nitrogen is controlled by the liquid level height of the dewar, and the nitrogen gas is controlled by the nitrogen gas pressure in the tank, and the liquid nitrogen and nitrogen gas are supplied simultaneously. Liquid nitrogen and nitrogen gas production equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63244103A JPH0293282A (en) | 1988-09-30 | 1988-09-30 | Method and device for manufacture of liquid nitrogen and nitrogen gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63244103A JPH0293282A (en) | 1988-09-30 | 1988-09-30 | Method and device for manufacture of liquid nitrogen and nitrogen gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0293282A true JPH0293282A (en) | 1990-04-04 |
Family
ID=17113797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63244103A Pending JPH0293282A (en) | 1988-09-30 | 1988-09-30 | Method and device for manufacture of liquid nitrogen and nitrogen gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0293282A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04254402A (en) * | 1991-01-31 | 1992-09-09 | Kanebo Ltd | Gaseous nitrogen separator |
| WO2006013918A1 (en) * | 2004-08-05 | 2006-02-09 | Sumitomo Seika Chemicals Co., Ltd. | Double separation method and double separation system for oxygen gas and nitrogen gas |
| CN113959122A (en) * | 2021-09-16 | 2022-01-21 | 青岛海尔空调电子有限公司 | Refrigeration system, control method and control device for refrigeration system |
-
1988
- 1988-09-30 JP JP63244103A patent/JPH0293282A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04254402A (en) * | 1991-01-31 | 1992-09-09 | Kanebo Ltd | Gaseous nitrogen separator |
| WO2006013918A1 (en) * | 2004-08-05 | 2006-02-09 | Sumitomo Seika Chemicals Co., Ltd. | Double separation method and double separation system for oxygen gas and nitrogen gas |
| CN113959122A (en) * | 2021-09-16 | 2022-01-21 | 青岛海尔空调电子有限公司 | Refrigeration system, control method and control device for refrigeration system |
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