JP5054032B2 - 極低温蒸留によって空気を分離する一組の装置を調節する方法及び前記方法に従って稼動する一組の空気分離装置 - Google Patents
極低温蒸留によって空気を分離する一組の装置を調節する方法及び前記方法に従って稼動する一組の空気分離装置 Download PDFInfo
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Description
空気を精製するのに最も有効なシステムの1つは、前処理(head end)精製ユニットにおいてガスを処理することである。このシステムは、一方は吸着で稼動し、他方は再生ステップの1つで稼動する2つのシリンダを備えている。
幾つかのサイトに、複数の極低温蒸留ユニットが設置され、必要量のガスを製造する。
120乃至300分の全サイクルにつき、加圧ステップは、一般には5乃至20分間を要する。この期間は、再加圧に利用可能な追加の空気流に依存している。
N個の空気ユニット(N≧2)を備えたサイトでは、N個までの加圧ステップを同時に有する可能性がある。
− 前記ガス混合物は、各装置について、前記複数の塔からなるシステムの上流で、前記吸着ユニットにおいて精製される。
− 前記吸着ユニットの動作は、前記再加圧ステップの全てが異なる期間に行われるように調節される。
− 少なくとも1つの吸着ユニットの前記サイクルタイムは、動作の間、前記再加圧ステップが非同時であるように変更される。
前記吸着ユニットは、複数のM/N秒が或る装置のサイクルの最後と他の装置のサイクルの最後との間で経過するように調節され、MはN個の装置についての平均サイクルタイムである。
少なくとも1つの吸着ユニットの前記サイクルタイムは、その吸着ユニットから流出するガスの温度に従って、及び/又は、その吸着ユニットから流出するガスの組成に従って変更される。
各々の装置毎に、前記吸着ユニットは2つの吸着器を具備するのみである。
図1は、本発明を用いない場合の或る特定の瞬間における同時加圧数を示し、
図2は、本発明を用いた場合の或る特定の瞬間における同時加圧数を示し、
図3及び4は、本発明に係る4つの空気分離装置からなる組についてのサイクルタイムの変動を示し、
図5は、吸着シリンダに流入する流れ及びそこから流出する流れの温度の変動を示し、
図6は、本発明に係る4つの空気分離装置の組を示している。
また、本発明は、混合塔の原理によって不純酸素を製造する装置にも適用される。
デルタマックスは、サイクルタイムを調整するための最大許容変動である。
それゆえ、我々は、
− ユニット1を時間Oとし、
− ユニット2を時間Pとし、
− ユニット3を時間Qとし、
− パイロットユニット4を時間Rとする。ここで、R=(サイクルタイム)−(デルタマックス)=4M−(デルタマックス)である。
M=(サイクルタイム)/4であるとする。
4M−R+O+A−D=M
P−O+B−A=M
Q−P+C−B=M
R−Q+D−C=M
これらを
A=R−O−3*M+D
B=R−P−2*M+D
C=R−Q−M+D
とする。
これは、D=(−3*R+O+P+Q+6*M)/4を与える。
D=最大(−デルタマックス;最小(+デルタマックス;(−3*R+O+P+Q+6*M)/4))
C=最大(−デルタマックス;最小(+デルタマックス;−3*Q+R+O+P+2*M)/4))
B=最大(−デルタマックス;最小(+デルタマックス;−3*P+Q+R+O−2*M)/4))
A=最大(−デルタマックス;最小(+デルタマックス;−3*O+P+Q+R−6*M)/4))
である。
Claims (13)
- 極低温蒸留によって空気を分離する一組の装置を調節する方法であって、前記組は、N個の空気分離装置(1、2、3、4)を具備し、N>1であり、同一な組成を有しているガスが前記N個の装置から消費ユニット(5)へと送られ、各装置は、ガス混合物を蒸留する複数の蒸留塔からなるシステム(1B、2B、3B、4B)と、少なくとも2つの吸着器が使用され、加圧下での吸着を含んだ吸着相と減圧を伴う再生相と前記吸着器の再加圧とがこの順で行われ、前記吸着器の再加圧で終了する同一のサイクルに位相のずれを有して従うタイプの前記ガス混合物を吸着するユニット(1A、2A、3A、4A)とを具備し、前記方法は、1つのユニットの前記吸着器が並列に配置され、各装置は吸着サイクルタイムを有し、或る装置を再加圧するステップが他の装置の再加圧の開始とは異なる時刻に始まるように前記精製ユニットの少なくとも幾つかの動作が調節されることを特徴とするステップを含んだ方法。
- 前記ガス混合物は空気であることを特徴とする請求項1に記載の方法。
- 請求項1又は2に記載の方法であって、
前記吸着ユニット(1A、2A、3A、4A)の動作は、前記再加圧ステップの全てが異なる期間に行われるように調節される方法。 - 請求項1乃至3の何れか1項に記載の方法であって、前記吸着ユニット(1A、2A、3A、4A)の動作は、前記吸着ユニットの少なくとも幾つかが少なくとも時々異なるサイクルタイムで動作するように調節される方法。
- 請求項4に記載の方法であって、少なくとも1つの吸着ユニット(1A、2A、3A、4A)の前記サイクルタイムは、動作の間、前記再加圧ステップが非同時であるように変更される方法。
- 請求項1乃至5の何れか1項に記載の方法であって、前記装置の少なくとも2つは、加圧されている酸素ガス及び/又は窒素ガスを前記消費ユニットへ供給する方法。
- 請求項1乃至6の何れか1項に記載の方法であって、前記吸着ユニット(1A、2A、3A、4A)は、複数のM/N秒が或る装置のサイクルの最後と他の装置のサイクルの最後との間で経過するように調節され、Mは前記N個の装置についての平均サイクルタイムである方法。
- 請求項1乃至7の何れか1項に記載の方法であって、少なくとも1つの吸着ユニット(1A、2A、3A、4A)のサイクルタイムは、そのサイクルが進行しながら変更される方法。
- 請求項1乃至8の何れか1項に記載の方法であって、少なくとも1つの吸着ユニット(1A、2A、3A、4A)の前記サイクルタイムは、その吸着ユニットから流出するガス(1W)の温度に従って、及び/又は、その吸着ユニットから流出するガス(1W)の組成に従って変更される方法。
- 請求項1乃至9の何れか1項に記載の方法であって、1つの装置のための再加圧ステップは、他の装置のための再加圧ステップを開始する少なくとも90分前又は後に始まる方法。
- 空気を極低温蒸留によって分離する装置の組であって、前記組は、ガス混合物を分離するN個の装置(1、2、3、4)を具備し、N>1であり、各装置は消費ユニット(5)に同一な組成を有しているガスを供給し、各装置は、複数の蒸留塔からなるシステム(1B、2B、3B、4B)と、少なくとも2つの吸着器が使用され、加圧下での吸着を含んだ吸着相と減圧を伴う再生相と前記吸着器の再加圧とがこの順で行われ、前記吸着器の再加圧で終了する同一のサイクルに位相のずれを有して従うタイプの前記ガス混合物を精製するユニット(1A、2A、3A、4A)とを具備し、前記方法は、前記吸着器が並列に配置され、各装置はサイクルタイムを有し、或る装置を再加圧するステップが他の装置の再加圧の開始とは異なる時刻に始まるように前記精製ユニットの少なくとも幾つかの動作を調節する手段を具備したことを特徴とするステップを含んだ組。
- 前記ガス混合物が空気であることを特徴とする請求項11に記載の組。
- 請求項11又は12に記載の組であって、前記N個の装置の第1装置の第1吸着ユニットの上流の複数の塔からなる第1システム(1B)から流出した再生ガス(1R)を加熱するための、及び、前記N個の装置の第2装置の第2吸着ユニットの上流の複数の塔からなる第2システム(2B)から流出した再生ガス(2R)を加熱するための共通のヒータ(RC)を具備した組。
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FR0650333 | 2006-01-31 | ||
FR0650333A FR2896861B1 (fr) | 2006-01-31 | 2006-01-31 | Procede de regulation d'un ensemble d'appareils de separation d'air par distillation cryogenique et ensemble d'appareils de separation d'air operant selon ledit procede |
PCT/EP2007/050511 WO2007088107A2 (en) | 2006-01-31 | 2007-01-18 | Method for regulating a series of apparatus for separating air by cryogenic distillation and series of apparatus for separating air operating according to said method |
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JP5054032B2 true JP5054032B2 (ja) | 2012-10-24 |
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US (1) | US20090038337A1 (ja) |
EP (1) | EP1982131A2 (ja) |
JP (1) | JP5054032B2 (ja) |
CN (1) | CN101379355B (ja) |
AU (1) | AU2007211589B2 (ja) |
CA (1) | CA2640270A1 (ja) |
FR (1) | FR2896861B1 (ja) |
RU (1) | RU2426046C2 (ja) |
UA (1) | UA95938C2 (ja) |
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FR2534827A1 (fr) * | 1982-10-22 | 1984-04-27 | Air Liquide | Procede de traitement de gaz par adsorption comportant plusieurs adsorbeurs en phase de production simultanee |
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US5896755A (en) * | 1998-07-10 | 1999-04-27 | Praxair Technology, Inc. | Cryogenic rectification system with modular cold boxes |
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FR2790823B1 (fr) * | 1999-03-12 | 2001-06-15 | Air Liquide | Procede et installation de purification et de separation d'air par voie cryogenique sans pre-refroidissement |
JP3891773B2 (ja) * | 2000-10-20 | 2007-03-14 | 大陽日酸株式会社 | ガスの分離精製方法及びその装置 |
FR2819045A1 (fr) * | 2000-12-29 | 2002-07-05 | Air Liquide | Procede d'alimentation en air d'au moins une unite a turbine a gaz et d'au moins une unite de distillation d'air, et installation de mise en oeuvre |
FR2818920B1 (fr) * | 2000-12-29 | 2003-09-26 | Air Liquide | Procede de traitement d'un gaz par absorption et installation correspondante |
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FR2828729B1 (fr) * | 2001-08-14 | 2003-10-31 | Air Liquide | Installation de production d'oxygene sous haute pression par distillation d'air |
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RU2426046C2 (ru) | 2011-08-10 |
CA2640270A1 (en) | 2007-08-09 |
AU2007211589A1 (en) | 2007-08-09 |
JP2009525454A (ja) | 2009-07-09 |
WO2007088107A2 (en) | 2007-08-09 |
US20090038337A1 (en) | 2009-02-12 |
RU2008135329A (ru) | 2010-03-10 |
FR2896861B1 (fr) | 2008-07-18 |
EP1982131A2 (en) | 2008-10-22 |
CN101379355B (zh) | 2012-08-08 |
WO2007088107A3 (en) | 2007-09-13 |
AU2007211589B2 (en) | 2011-02-03 |
FR2896861A1 (fr) | 2007-08-03 |
UA95938C2 (ru) | 2011-09-26 |
CN101379355A (zh) | 2009-03-04 |
ZA200806115B (en) | 2009-07-29 |
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