JPS6342717A - Separation of nitrogen - Google Patents
Separation of nitrogenInfo
- Publication number
- JPS6342717A JPS6342717A JP61185646A JP18564686A JPS6342717A JP S6342717 A JPS6342717 A JP S6342717A JP 61185646 A JP61185646 A JP 61185646A JP 18564686 A JP18564686 A JP 18564686A JP S6342717 A JPS6342717 A JP S6342717A
- Authority
- JP
- Japan
- Prior art keywords
- nitrogen
- dppe
- absorbent
- tower
- air
- 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 abstract description 60
- 229910052757 nitrogen Inorganic materials 0.000 title abstract description 30
- 238000000926 separation method Methods 0.000 title abstract description 11
- QFMZQPDHXULLKC-UHFFFAOYSA-N 1,2-bis(diphenylphosphino)ethane Chemical compound C=1C=CC=CC=1P(C=1C=CC=CC=1)CCP(C=1C=CC=CC=1)C1=CC=CC=C1 QFMZQPDHXULLKC-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims description 17
- 239000007789 gas Substances 0.000 claims description 15
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 19
- 239000003446 ligand Substances 0.000 abstract description 16
- 238000001179 sorption measurement Methods 0.000 abstract description 15
- 239000002904 solvent Substances 0.000 abstract description 7
- 230000008929 regeneration Effects 0.000 abstract description 5
- 238000011069 regeneration method Methods 0.000 abstract description 5
- 230000002745 absorbent Effects 0.000 abstract 5
- 239000002250 absorbent Substances 0.000 abstract 5
- 229910001914 chlorine tetroxide Inorganic materials 0.000 abstract 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Chemical compound [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 abstract 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 1
- -1 C5H5N Chemical compound 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 229920005597 polymer membrane Polymers 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910001448 ferrous ion Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000002829 nitrogen Chemical class 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920005573 silicon-containing polymer Polymers 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0411—Chemical processing only
- C01B21/0427—Chemical processing only by complexation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Gas Separation By Absorption (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野〕
この発明は、空気などの窒素含有ガスから窒素を分離す
る方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to a method for separating nitrogen from a nitrogen-containing gas such as air.
［従来の技術］
従来、空気などの音素含有ガスから音素を分離する方法
としては、次のようなものが知られている。[Prior Art] Conventionally, the following methods are known as methods for separating phonemes from a phoneme-containing gas such as air.
■ 液化精溜法
■ＰＳＡ法
■ 高分子膜法
液化精溜法は、空気を冷却液化せしめ、各成分ガスの気
化温度の差を利用して精溜する方法である。■ Liquefaction rectification method ■ PSA method ■ Polymer membrane method Liquefaction rectification method is a method in which air is cooled and liquefied, and the air is rectified by utilizing the difference in vaporization temperature of each component gas.
ｔ＆、ＰＳＡ 法は、モレキュラーシープスナトの吸着
剤によプ加圧空気中の窒素を吸着し、ついで減圧して窒
素ガスを吸着剤から脱着する方法である。The t&, PSA method is a method in which nitrogen in pressurized air is adsorbed using an adsorbent made of molecular sheepsnat, and then the pressure is reduced to desorb nitrogen gas from the adsorbent.
さらに、高分子膜法はシリコーンポリマーなどの酸素の
透過係数の高い高分子膜を用い、叩気中の酸素を分離す
ることによシ％嘗素を得る方法である。Furthermore, the polymer membrane method uses a polymer membrane with a high oxygen permeability coefficient, such as a silicone polymer, to separate oxygen in the beating gas, thereby obtaining silicon.
［発明が解決しようとする問題点］
この発明は、これら従来の９素分離法とは根本的に異る
新しい原理に基いて音素を分離するものである。[Problems to be Solved by the Invention] This invention separates phonemes based on a new principle that is fundamentally different from these conventional nine-element separation methods.
この発明にあっては、［ＦｅＨ（ｄｐｐ ｅ ） ｘ
Ｉ Ｙ（（ｆｌ、 Ｌ、 ｄｐｐ・はエチレンビス（
ジフェニルホスフィン）であり、ＹはＢ （０６Ｈ５）
、またはｃｚｏ。In this invention, [FeH(dpp e ) x
I Y ((fl, L, dpp・ is ethylene bis(
diphenylphosphine), and Y is B (06H5)
, or czo.
である、）で表わされる錯体と、（ＣＨ３）２Ｃ０。) and (CH3)2C0.
Ｃ５Ｈ５Ｎ 、 ＮＨ３，Ｃ６Ｈ５ＣＮ ＃ （ＣＨ，
）ＣＮの配位子とを溶解し々溶液に５１１素含有ガスを
接触せしめて、音素錯体を生１成させ、この９素錯体か
ら窒素を離脱させること（＝より！！章を分離するよう
にし九。C5H5N, NH3, C6H5CN # (CH,
) A gas containing 511 elements is brought into contact with a solution in which CN ligands are dissolved, a phoneme complex is formed, and nitrogen is released from this 9-element complex. Nishiniku.
［発明の原理］
例えば、［ＦｅＨ（ｄ ＩＩｐ３ ）２ 〕［（ＣＪＩ
ｓ ） ４Ｂ １″″（（ｆｌ Ｌ％ ｄｐｐに１エチ
レンビス（ジフェニルホスフィン）を示す、以ド、同じ
、）で表わぜれる錯体があ′！１．．この錯体は、中心
金属が２価の第１鉄イオンであり、テトラヒドロ７％ン
（以’ｌ’、 ’ｒＨＦと略称する。）などの溶媒に可
溶で、溶液中でも安定なカチオニツクな錯体である。[Principle of the invention] For example, [FeH(dIIp3)2][(CJI
s) There is a complex represented by 4B 1"" ((fl L% dpp indicates 1 ethylenebis(diphenylphosphine), the same is true hereafter)! 1. This complex has a central metal of 2 It is a valent ferrous ion, and is a cationic complex that is soluble in solvents such as tetrahydro7% (rHF) and stable even in solution.
この錯体ｔｊ、１素ガスと反ルして窒素錯体＋
成する１例えば、［Ｆ・Ｈ（ｄｐｐｅ）２ ］［（ｅ、
Ｈ，）４Ｂ−１をＴＴ！Ｆ に溶解させ、仁の溶液に
常温常圧で空気を吹き込むと、ただちに率で得ら扛る。This complex tj is reacted with 1 elemental gas to form a nitrogen complex + 1.For example, [F・H(dppe)2][(e,
H,) 4B-1 TT! When air is blown into the kernel solution at room temperature and pressure, the solution is immediately obtained.
この反応は、！！気のように酸素が共存すＺ、状態でも
定量的に進行する。この窒素錯体の配位子であるＮ２
Ｆｉ、他の二ネートラルな配位子（Ｌ）と容品に置換す
ることができる。ニュートラルな配位子（Ｌ）とは、分
極していないか電荷を帯びていない配位子であり、（（
’Ｈ３）２ＣＯ。This reaction is! ! Even in the Z state where oxygen coexists, like Qi, it progresses quantitatively. N2, the ligand of this nitrogen complex
Fi can be substituted with other binary ligands (L). A neutral ligand (L) is a ligand that is not polarized or has no charge ((
'H3)2CO.
Ｃ５Ｈ，Ｎ％ＮＨ３、Ｃ，）Ｉ、、ＣＭ、 （ＣＩＴ
３）ＣＮなどがある。C5H,N%NH3,C,)I,,CM, (CIT
3) There are CN, etc.
この配位子の置換反応は、配位子（Ｌ）の濃度と窒素分
圧の大きさで、その平衡関係が決まる、よって、一定温
ｌと配位子（Ｌ）の一定濃度とに対し、窒素分圧が大き
い時には［ＦｅＨ（Ｎ２）・（ｄｐｐｅ）２１ が形
成きれ、窒素分圧が小さい時にｔｊ ［Ｆｔ→Ｉ［（Ｉ
、）（ｄｐｐｅ）２ Ｔｌ が形成される。Ｌ７’ｊ
がって、この可逆的な配位子の置換反応を利用すること
によって９獣を分離することができる。In this ligand substitution reaction, the equilibrium relationship is determined by the concentration of the ligand (L) and the size of the nitrogen partial pressure. Therefore, for a constant temperature l and a constant concentration of the ligand (L), , when the nitrogen partial pressure is large, [FeH(N2)・(dppe)21] is completely formed, and when the nitrogen partial pressure is small, tj [Ft→I[(I
, )(dppe)2 Tl is formed. L7'j
Therefore, the nine animals can be separated by utilizing this reversible ligand substitution reaction.
なお、錯体［ＦｅＨ（ｄＴ）Ｔ’θ）２〕 が窒素配位
能を有するのは、中心金属が落１鉄Ｆｅ（１）の時であ
って、第８鉄に酸化されると、可逆的な１素上位能を失
う。この場合は、適切な還元削を加えるか、電解還元に
よって＠１鉄に還元し々ければならない。The complex [FeH(dT)T'θ)2] has nitrogen coordination ability when the central metal is Fe(1), and when it is oxidized to ferric iron, it has a reversible ability to coordinate. Loss of the first-element ability. In this case, it is necessary to apply appropriate reduction cutting or to reduce the iron to @1 iron by electrolytic reduction.
次に、真体的操作を示すと、まずＴＨＦ などの溶謀ｌ
′：、配位子（ＩＪ）を添加すみ、配位子（Ｌ）の選択
およびその濃度は、操作温度と操作圧力により決められ
る。ついで、この溶液に
［ＦａＨ（ｄｐｐａ）２ ］ をＷ！ガして容素吸収
液とする。Next, to show the true operation, first, melting liquid such as THF.
': After adding the ligand (IJ), the selection of the ligand (L) and its concentration are determined by the operating temperature and operating pressure. Next, [FaH(dppa)2] was added to this solution with W! Gently stir to make a volume-absorbing liquid.
この溶液中では［Ｆ＠Ｔ（（Ｉ、）（ｄｐｐｅ）、〕
となっている、この吸収液に、加圧した窒素含有ガス
を接触させて、（ＦａＨ（Ｎ２Ｘｄｐｐｅ）２コを生５
ｆｔ、＆’）て窒素を吸収させる。In this solution, [F@T((I,)(dppe),]
This absorption liquid is brought into contact with a pressurized nitrogen-containing gas to produce 2 pieces of (FaH(N2Xdppe)).
ft, &') to absorb nitrogen.
窒素を吸収し友溶液をついで減圧し、昇温すれ＋
ば、を素が離脱し、再び［ＦｅＨ（Ｌ）（ｄＴ”ｐｅ
）２１が生成されて錯体が元に再生され、己。If nitrogen is absorbed and the solution is then depressurized and heated, the element will separate and form [FeH(L)(dT”pe) again.
) 21 is generated and the complex is regenerated from the original, self.
このようにして循環サイクルを構成すれば、錯体は、！
ｊに窒素（Ｎ、）も［２（は配位子（１Ｊ）が配位し良
状態となｐ、配位不飽和な状態はなくなる、この結果、
中心金属（第１鉄）が、共存する酸素などにより酸化さ
れることがな（、安定な錯体として窒素分離に供するこ
とができる。If a circulation cycle is constructed in this way, the complex will be!
Nitrogen (N,) is also coordinated with the ligand (1J) at j, resulting in a good state p, and there is no coordination unsaturated state. As a result,
The central metal (ferrous iron) is not oxidized by coexisting oxygen, etc., and can be subjected to nitrogen separation as a stable complex.
図面は、この発明の音素分離方法の真体例を示すもので
、窒素含有ガスとして９気を用いるものである。The drawing shows a true example of the phoneme separation method of the present invention, in which 9 Qi is used as the nitrogen-containing gas.
原料となる空気は、管１から圧縮機２に送られ、ここで
３〜９〜／ｌｙａ Ｇ８！Ｉｆに加圧される。仁の加
圧突気は、２塔切替式の吸着塔３に導ひかれる。Air, which is the raw material, is sent from pipe 1 to compressor 2, where 3~9~/lya G8! It is pressurized to If. The pressurized air rush is led to the adsorption tower 3, which is a two-tower switching type.
吸着塔３には、モレキュラーシーブスが吸着剤として充
填されており、原料空気中の水分および二酸化炭素が吸
着、除去される。吸着塔３からの９気は、吸着塔４に導
ひかれる。吸着塔４内の温度は約３５℃とされ、その内
部には、気液接触用の充填剤が充填されておシ、塔３上
部から流下する窒素吸収液と加圧突気とが気液接触する
ようになっている。The adsorption tower 3 is filled with molecular sieves as an adsorbent, and moisture and carbon dioxide in the raw air are adsorbed and removed. The 9 gases from the adsorption tower 3 are led to the adsorption tower 4. The temperature inside the adsorption tower 4 is approximately 35°C, and the interior thereof is filled with a packing material for gas-liquid contact. It is meant to be in contact.
この日素吸収液としては、次のようにして作成し良もの
を使用する。イソブタノールとテトラヒドロフランとの
混合溶媒にＬ Ｆｅ）ＩＣｊ（ｄｐｐｅ ） ２ ］を
溶解し九溶液を作る。ついで、アルゴン雰囲気下でＮａ
Ｂ（０６Ｈ５）４ を加えて攪拌する。As this daily chloride absorption liquid, a good one prepared in the following manner is used. LFe)ICj(dppe)2] was dissolved in a mixed solvent of isobutanol and tetrahydrofuran to prepare a solution. Then, under an argon atmosphere, Na
Add B(06H5)4 and stir.
［ＦｅＨＣ７（ｄｐｐｅ）２］ ＋ ＮａＢ（Ｃ，Ｈ５
）４−４［ＦｅＨ（ａｐｐｅ）２］ ［Ｂ（Ｃ６Ｈ，）
４］ ＋ ＮａＣｔ溶媒とＮａＣＬを除去したのち、［
ＦｅＨ（ｄｐｐｅ）２ ］［’Ｂ（Ｃ，Ｈ，）４）を、
ピリジン（Ｃ５Ｈ５Ｎ ）が添加しであるＴＨＦ ｒＪ
液に溶解し、窒素吸収液とした。[FeHC7(dppe)2] + NaB(C,H5
)4-4[FeH(appe)2][B(C6H,)
4] + After removing the NaCt solvent and NaCL, [
FeH(dppe)2]['B(C,H,)4),
THF rJ with addition of pyridine (C5H5N)
It was dissolved in a liquid to make a nitrogen absorption liquid.
吸収塔４で窒素が吸収されて酸素富化され大空気は、２
塔切換式の吸着塔５に導かれる。吸着塔５には、活性炭
が充填されており、酸素富化空気に同伴されてきた溶媒
蒸気はここで、吸着除去され、回収されろ。吸着塔５か
らの酸素富化突気は製品ガスとして系外に導出される。Nitrogen is absorbed in the absorption tower 4 and the air is enriched with oxygen, and the air becomes 2
The adsorption tower 5 is guided to a switching tower type adsorption tower 5. The adsorption tower 5 is filled with activated carbon, and the solvent vapor entrained in the oxygen-enriched air is adsorbed and removed here and recovered. The oxygen-enriched gas from the adsorption tower 5 is led out of the system as a product gas.
一方、吸収塔４で窒素を吸収した窒素吸収液は、吸収塔
４１部より抜かれ、管６を通り熱交換器７に導ひかれ、
約５５℃まで加温される。さらに、ヒーター８で６５℃
まで加熱され喪窒素吸収液は、弁９で０．５〜／ ｃｍ
２Ｑ壕で減圧され、再生塔ｌＯに送られる。再生＃！
ｔ１０では、窒素吸収液の昇温と窒素分圧の低下により
、吸収液から窒素が離脱し、吸収液が再生される。再生
された窒素吸収液は、吸収ｑｒｉｏ下部から抜かれ、熱
交換器７に送られ、冷却され九のち、液ポンプ１１で昇
圧されたうえ、吸収塔４に戻される。On the other hand, the nitrogen absorption liquid that has absorbed nitrogen in the absorption tower 4 is extracted from the 41st part of the absorption tower, passes through the pipe 6, and is led to the heat exchanger 7.
It is heated to about 55°C. Furthermore, 65℃ with heater 8
The nitrogen absorbing liquid is heated to a temperature of 0.5~/cm at valve 9.
It is depressurized in trench 2Q and sent to regeneration tower IO. reproduction#!
At t10, the temperature of the nitrogen absorption liquid increases and the nitrogen partial pressure decreases, so that nitrogen is released from the absorption liquid and the absorption liquid is regenerated. The regenerated nitrogen absorption liquid is extracted from the lower part of the absorption QRIO, sent to the heat exchanger 7, cooled, and then pressurized by the liquid pump 11 and returned to the absorption tower 4.
また、再生塔１０で離脱した１素は、２塔切換式の吸着
塔１２に導ひかれる。吸着塔１２には活゛性炭が充填さ
れており、窒素に同伴してくる溶媒蒸気が吸着除去され
る。吸着塔１２からの窒素は製品カスとすることもでき
るが、吸着塔３．５゜１２の加熱再生用ガスとして使用
することができる。吸ｇｌ塔３，５．１２から脱着した
溶媒は冷却液化して吸収塔４に戻され、再利用される、
このようなプロセスにより、醗素濃［３１の酸素富化空
気を得ることができた、
〔発明の効果〕
以上説明したように、この発明の窒素分離法は、＋
窒素を１つの配位子とする錯体［ＦｅＨ（ｄｐｐｅ）２
］を用い、配位子の可逆的な置換反応を利用して、窒素
含有ガスから＊累を分離するものであるので、次のよう
な効果を得ることができる。Moreover, the single element separated in the regeneration tower 10 is led to the adsorption tower 12 of a two-column switching type. The adsorption tower 12 is filled with activated carbon, and the solvent vapor accompanying the nitrogen is adsorbed and removed. Nitrogen from the adsorption tower 12 can be used as product residue, but it can also be used as a heating regeneration gas for the adsorption tower 3.5° 12. The solvent desorbed from the absorption towers 3, 5.12 is cooled and liquefied, returned to the absorption tower 4, and reused.
Through such a process, it was possible to obtain oxygen-enriched air with a concentration of 31%. [Effects of the Invention] As explained above, the nitrogen separation method of the present invention is capable of converting + nitrogen into one ligand. The complex [FeH(dppe)2
] and utilizes a reversible substitution reaction of the ligand to separate * from the nitrogen-containing gas, so the following effects can be obtained.
■ 分離プロセスが連続的であるから、エネルギー原単
位が低い。■ Energy consumption is low because the separation process is continuous.
■ 常温、常圧に近い温和な条件で分離できる。■ Can be separated under mild conditions close to normal temperature and pressure.
■ 窒素だけが反応に関与するので、分離係数が極めて
高（、高純な窒素を得ることができる。■ Since only nitrogen participates in the reaction, the separation coefficient is extremely high (high purity nitrogen can be obtained).
■ 反応速度が速（、当量的に反応するので、効率がよ
（、分離装置をコンパクト化できる。■ The reaction rate is fast (reacts equivalence, so it is efficient) and the separation equipment can be made more compact.
■ 起動時間が短（てすむ。■ Short startup time.
■ 小容量から大容量まで、任意の大きさの装置が製作
できる。■ Equipment of any size can be manufactured, from small capacity to large capacity.
図面は、この発明の１素分離方法を実施するに好適な分
離装置の一例を示す概略構成図である。
１・・・・・・管
２・・・・・・圧［１１
４・・・・・・吸収塔
）・・・・・・熱交換器
８・・・・・・ヒーター
９・・・・・・弁
１０・・・・・・再生塔
１１・・・・・・液ポンプ。
出顧人日本ｅ素株式会社The drawing is a schematic configuration diagram showing an example of a separation apparatus suitable for carrying out the single element separation method of the present invention. 1...Pipe 2...Pressure [11 4...Absorption tower)...Heat exchanger 8...Heater 9... ... Valve 10 ... Regeneration tower 11 ... Liquid pump. Client Japan e-So Co., Ltd.
Claims (1)
フィン）であり、ＹはＢ（Ｃ＿６Ｈ＿５）＿４またはＣ
ｌＯ＿４である。）で表わされる錯体と、（ＣＨ＿３）
＿２ＣＯ、Ｃ＿５Ｈ＿５Ｎ、ＮＨ＿３、Ｃ＿６Ｈ＿５Ｃ
Ｎ。、（ＣＨ＿３）ＣＮからなる群から選ばれた１種以
上の配位子との溶液を窒素吸収液とし、この窒素吸収液
に窒素含有ガスを接触させることを特徴とする窒素分離
方法。[Claims] The following formula [FeH(dppe)_2]^+Y^- (wherein dppe is ethylenebis(diphenylphosphine), and Y is B(C_6H_5)_4 or C
It is lO_4. ) and (CH_3)
_2CO, C_5H_5N, NH_3, C_6H_5C
N. , (CH_3)CN, a nitrogen-absorbing liquid is used as a nitrogen-absorbing liquid, and a nitrogen-containing gas is brought into contact with the nitrogen-containing gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61185646A JPS6342717A (en) | 1986-08-07 | 1986-08-07 | Separation of nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61185646A JPS6342717A (en) | 1986-08-07 | 1986-08-07 | Separation of nitrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6342717A true JPS6342717A (en) | 1988-02-23 |
Family
ID=16174411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61185646A Pending JPS6342717A (en) | 1986-08-07 | 1986-08-07 | Separation of nitrogen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6342717A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5630929A (en) * | 1994-10-17 | 1997-05-20 | Dipsol Chemicals Co., Ltd. | Highly corrosion-resistant zincate type zinc-iron-phosphorus alloy plating bath and plating method using the plating bath |
| EP0800852A2 (en) * | 1996-04-11 | 1997-10-15 | Bend Research, Inc. | Absorbent solutions for separating nitrogen from natural gas |
| WO2005009897A1 (en) * | 2003-07-24 | 2005-02-03 | Gheczy Rudolf | Method for the selective absorption of oxygen from a gas mixture |
-
1986
- 1986-08-07 JP JP61185646A patent/JPS6342717A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5630929A (en) * | 1994-10-17 | 1997-05-20 | Dipsol Chemicals Co., Ltd. | Highly corrosion-resistant zincate type zinc-iron-phosphorus alloy plating bath and plating method using the plating bath |
| EP0800852A2 (en) * | 1996-04-11 | 1997-10-15 | Bend Research, Inc. | Absorbent solutions for separating nitrogen from natural gas |
| EP0800852A3 (en) * | 1996-04-11 | 2000-03-22 | Bend Research, Inc. | Absorbent solutions for separating nitrogen from natural gas |
| WO2005009897A1 (en) * | 2003-07-24 | 2005-02-03 | Gheczy Rudolf | Method for the selective absorption of oxygen from a gas mixture |
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