JPS6375474A - Method of generating nitrogen - Google Patents
Method of generating nitrogenInfo
- Publication number
- JPS6375474A JPS6375474A JP21948486A JP21948486A JPS6375474A JP S6375474 A JPS6375474 A JP S6375474A JP 21948486 A JP21948486 A JP 21948486A JP 21948486 A JP21948486 A JP 21948486A JP S6375474 A JPS6375474 A JP S6375474A
- Authority
- JP
- Japan
- Prior art keywords
- nitrogen
- generating nitrogen
- crudely purified
- high purity
- raw material
- 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 description 64
- 229910052757 nitrogen Inorganic materials 0.000 title claims description 32
- 238000000034 method Methods 0.000 title claims description 8
- 239000007789 gas Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、窒素発生方法に係り、特に深冷分離により製
品窒素を採取するのに好適な窒素発生方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a nitrogen generation method, and particularly to a nitrogen generation method suitable for collecting product nitrogen by cryogenic separation.
従来の窒素発生技術としては、例えば、特開昭４８−１
８１６３号公報に記載のよう化、水分。Conventional nitrogen generation technology includes, for example, Japanese Patent Application Laid-Open No. 48-1
Hydrogenation and moisture as described in Publication No. 8163.
二酸化炭素が吸着除去された後に、精留分離された戻り
の製品窒素及び廃ガスで冷却されて一部液化した原料空
気が原料ガスとして精留塔に供給するようなものが仰ら
れている。また、窒素を濃縮する技術としては、例えば
、特開昭５６−１６３７５３号公報に記載のようにＰＳ
Ａ法１ζより９９％程度の窒素を得るものが知られてい
る。It is said that after carbon dioxide has been adsorbed and removed, raw air that has been partially liquefied by being cooled by the return product nitrogen from the rectification and waste gas is supplied as raw material gas to the rectification column. In addition, as a technique for concentrating nitrogen, for example, PS
It is known that approximately 99% of nitrogen can be obtained by A method 1ζ.
上記従来技術の前者においては、原料空気中に含まれる
炭化水素が酸素リッチの液体空気中に４縮されるため、
安全ｂ、ある一定値以下の窒素回収率とする必要がある
。また、後者においては、窒素の純度は高々９９．９％
程（９）であり、ｐｏｍオパ−ダの高純度窒素を得るこ
とができない。In the former of the above conventional techniques, the hydrocarbons contained in the feed air are condensed into oxygen-rich liquid air;
Safety b: Nitrogen recovery rate must be below a certain value. In addition, in the latter case, the purity of nitrogen is at most 99.9%.
(9), and high purity nitrogen of pom opadur cannot be obtained.
本発明の目的は、ｐｏｍオーダの高純度窒素を効率良く
回収できる窒素発生方法を提供することにある。An object of the present invention is to provide a nitrogen generation method that can efficiently recover high purity nitrogen of the POM order.
上記目的は、窒素発生方法を、粗精製した窒素を原料ガ
スとする方法とするととｌこより、達成される。The above object is achieved when the nitrogen generation method uses crudely purified nitrogen as a raw material gas.
粗精製した窒素中の炭化水素の量はわずかな量であり、
従って、全量ガス化させて系外に効率よく排出すること
ができる。−万、精留に必要な上昇ガスは、精留塔下部
に巻き込まれたりリボイラ−によりつくられ、また、環
流液は、精製塔頂部に巻き込まれたりコンデンサーによ
りつくられる。The amount of hydrocarbons in crudely purified nitrogen is small;
Therefore, the entire amount can be gasified and efficiently discharged outside the system. - The rising gas necessary for rectification is drawn into the bottom of the rectification column or produced by a reboiler, and the reflux liquid is drawn into the top of the purification column or produced by a condenser.
かくして、００ｍオーダの高純１１ｉ１′窒素が発生さ
せられる。In this way, high purity 11i1' nitrogen on the order of 00m is generated.
以下本発明の一実施例を第１図により説明する。 An embodiment of the present invention will be described below with reference to FIG.
原料空気は空気圧縮機１により所定の圧力まで昇圧され
、切換使用される吸着塔２ａ、２ｂのいずれか一方に入
り、含有する水分、二酸化炭素及び５０％程度以上の酸
素が吸着除去される。このようにして粗精製した窒素は
原料ガスとして、更に冷却器３により飽和温度近くまで
冷却され、窒素精製塔４の下部にリボイラー５として巻
き込まね、上昇ガスを発生させる一方で自身は液化し、
減圧された後で窒素ｎ装填４の中間段に供給される。窒
素精製塔４の頂部の環流液をつくるためのコンデンサー
６には窒素圧縮機７で所定の圧力まて引圧され、冷却器
３で液化された窒素を減圧し温度１洋下したものが使用
される。又、前述窒素の一部は液化する前に膨張タービ
ン８に導びかれ装ａｌｌこ必要な寒冷を発生させた後に
、コンデンサー６でガス化した窒素と合流し、膨張ター
ビン７に戻る。The raw air is pressurized to a predetermined pressure by the air compressor 1, and enters either one of the adsorption towers 2a and 2b, which are used selectively, where water, carbon dioxide, and about 50% or more of the oxygen contained therein are adsorbed and removed. Nitrogen crudely purified in this way is used as a raw material gas, and is further cooled to near the saturation temperature by a cooler 3, and is drawn up as a reboiler 5 at the bottom of the nitrogen purification tower 4, generating rising gas while liquefying itself.
After being depressurized, it is fed to the intermediate stage of nitrogen charge 4. The condenser 6 at the top of the nitrogen purification tower 4 for creating a reflux liquid uses nitrogen that has been pulled to a predetermined pressure by a nitrogen compressor 7, liquefied in a cooler 3, and reduced in pressure to a temperature of 1°C. be done. Also, before being liquefied, a portion of the nitrogen is led to the expansion turbine 8, where it generates the necessary refrigeration, and then merges with the gasified nitrogen in the condenser 6 and returns to the expansion turbine 7.
本実施例では、原料空気から含有する水分、二酸化炭素
及び５０％程度以上の酸素が吸着除去されて粗精製され
た窒素（濃度９０％以上）を原料ガスとしているので、
ｐｐｍオーダの高純度窒素を効率良く回収することがで
きる。また、炭化水素を深冷部において吸着除去する必
要をな（すことができる。In this example, the raw material gas is crudely purified nitrogen (concentration of 90% or more) in which moisture, carbon dioxide, and about 50% or more of oxygen contained in the raw air are adsorbed and removed.
High purity nitrogen on the order of ppm can be efficiently recovered. In addition, it is possible to eliminate the need to adsorb and remove hydrocarbons in the cryogenic section.
本発明によれば、粗精製した窒素を深冷で精留分離する
ので、ｐｐｍオーダの高純度窒素を効率良く回収できる
という効果がある。According to the present invention, since crudely purified nitrogen is subjected to rectification separation by deep cooling, there is an effect that high purity nitrogen on the order of ppm can be efficiently recovered.
第１図は、本発明の一実施例の窒素発生装置の系統図で
ある。FIG. 1 is a system diagram of a nitrogen generator according to an embodiment of the present invention.
Claims (1)
窒素発生方法。1. A nitrogen generation method characterized by using crudely purified nitrogen as a raw material gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21948486A JPS6375474A (en) | 1986-09-19 | 1986-09-19 | Method of generating nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21948486A JPS6375474A (en) | 1986-09-19 | 1986-09-19 | Method of generating nitrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6375474A true JPS6375474A (en) | 1988-04-05 |
Family
ID=16736162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21948486A Pending JPS6375474A (en) | 1986-09-19 | 1986-09-19 | Method of generating nitrogen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6375474A (en) |
-
1986
- 1986-09-19 JP JP21948486A patent/JPS6375474A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6210467B1 (en) | Carbon dioxide cleaning system with improved recovery | |
| KR860001999A (en) | Ultra high purity oxygen production method | |
| JPH03137484A (en) | Process of manufacturing nitrogen from air and its device | |
| WO1981002291A1 (en) | Method for purifying a gas mixture | |
| EP0520738B1 (en) | Production of nitrogen of ultra-high purity | |
| CA2272813C (en) | Multiple column nitrogen generators with oxygen coproduction | |
| US5783162A (en) | Argon purification process | |
| US5167125A (en) | Recovery of dissolved light gases from a liquid stream | |
| US4384876A (en) | Process for producing krypton and Xenon | |
| KR950009205A (en) | Cryogenic Air Separation Methods to Produce High Pressure Nitrogen by Pumped Liquid Nitrogen | |
| GB2180923A (en) | Process and apparatus for the production of pressurized nitrogen | |
| US6351971B1 (en) | System and method for producing high purity argon | |
| US5129932A (en) | Cryogenic process for the separation of air to produce moderate pressure nitrogen | |
| CA2075230C (en) | Coproduction of a normal purity and ultra high purity volatile component from a multi-component stream | |
| CA2043896A1 (en) | Cryogenic process for the separation of air to produce moderate pressure nitrogen | |
| US5478547A (en) | Ultra-high purity nitrogen generating method | |
| JP2983393B2 (en) | Method for removing hydrogen by cryogenic distillation in the production of high purity nitrogen | |
| JPS6375474A (en) | Method of generating nitrogen | |
| CN108014601B (en) | Method and apparatus for purifying gases | |
| US20040141902A1 (en) | Process and apparatus for producing a krypton/xenon mixture from air | |
| JPS60142183A (en) | Method of liquefying and separating air | |
| JPH02150686A (en) | Manufacture of super-high purity oxygen | |
| JPS62210386A (en) | Air separator | |
| KR950012518B1 (en) | Coproduction of a normal purity and ultra high purity volatile compent from a multi-compent stream | |
| JP3254523B2 (en) | Method and apparatus for purifying nitrogen |