JP5624358B2 - 再循環された少なくとも1つの分離ループを含む回転ベッド収着システム、およびこのようなシステムを設計して作動させる方法 - Google Patents
再循環された少なくとも1つの分離ループを含む回転ベッド収着システム、およびこのようなシステムを設計して作動させる方法 Download PDFInfo
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- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
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- Separation Of Gases By Adsorption (AREA)
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Description
本発明の最も簡単な実施形態、例えば、閉ループで動作するホッパドライヤ収着ユニットにおいて、設計者は、そのユニットに閉ループプロセスファンを配置するという選択を行う。図18に示した実施例には、ホッパ50、プロセス空気流51、プロセス空気ファン52、回転収着剤ディスク53、再生空気流54、再生空気加熱器55、および再生空気ファン56が示されている。ホッパ50は、30インチWC(約76水柱cm)を超えることがある空気側の非常に大きな圧力低下を生じさせる。ホッパ50は、閉ループの最も「開いた」位置であり、このようにして、気圧に釣り合う。ループの他の部分は、ループ内における他の部分のそれぞれの位置に応じたおよびループ内の空気移動装置に従った圧力を取る。
この設計基準の決定において、任意の2つの隣接する領域の接点における凝縮または凍結の可能性があるかどうかという問題が生じる。境界における凍結生成の影響は破壊的なものである場合がある。凍結物がディスク面に凍り付くことがあり、氷の蓄積により、ディスク面が損傷することがある。凝縮の影響はそれほど破壊的なものではないが、多種類の乾燥剤、特にシリカゲルに長期にわたって水が衝突することにより、著しい劣化の影響が生じることがあり、最終的には、性能の低下または損失が生じることになる。分離方法に関連してまたは分離方法のあるいは、上記の決定を用いて、凝縮生成または凍結生成を防止することができる。
2つの空気流領域の境界において、ロータ材料の蒸気圧は激変する。この境界における蒸気圧の差は、典型的に、2つの空気回路の静圧の差または絶対圧の差よりもはるかに大きい。結果として、蒸気流は、ディスクの波状流路の透過性壁にわたって発生する。このことは、米国特許5,653,115号明細書に示したような空気漏れなしに発生することがある。1つ以上の分離ループを付加して、最も乾燥した空気流と最も湿った空気流とを互いに分離することにより、この水分移動の影響を軽減することができる。蒸気圧の差が、隣接する流体の流れが通過する収着剤材料の領域の間の約150Paよりも小さくなるまで、分離ループが付加されることが好ましい。
1つの分離閉ループをシステムに加えることにより、空気の漏れがほぼ半分まで低減される。このことは分離ループの閉ループ特性によるものであり、これにより、分離ループが処理領域と再生領域との間の中間点にある絶対圧に釣り合う。
これらのシステムの性能は、収着剤ディスクの種々の領域のために異なる直径を用いることによってさらに向上させることが可能である。上記のように、極端な影響により、収着剤ディスクの除去効率に対して有害な影響が生じる可能性がある。典型的には、この影響は、ディスクの中央および/または縁部における収着剤媒体の不完全な再生、あるいはこれらの範囲の不完全なパージまたは冷却の結果によるものである。また、面シールが利用された場合には、再生領域に隣接して充満しまたプロセス流の処理された空気に侵入することがある蒸気沈殿が生じる。ディスク面ではなく、ディスクのリムをシールするために、周辺シールが使用された場合には、ハウジングの主要部がヒートシンクとして機能することがあり、かなり外側にある乾燥剤材料の完全な再生を妨げる。
Claims (5)
- 収着ベッドシステムを設計する方法において、
収着ベッドシステムは、設計の初期段階では、再生可能な所定体積の吸着剤材料の塊が、プロセス流体の流れと再生流体の流れとがそれぞれ通過する隣接する区域を交互に通過するように、前記吸着剤材料の塊が回転されるものであり、
(a)(i)前記プロセス流体及び再生流体の流れ一方の温度が、近隣の他方の流体の流れの露点以下である基準と、
(ii)前記吸着剤材料の塊が通過する前記プロセス流体の流れの区域と前記再生流体の流れの区域とにおいて、前記プロセス流体の流れの蒸気圧と前記再生流体の流れの蒸気圧との間に少なくとも150Paの差がある基準と、
(iii)隣接する流体の流れの間の絶対圧の差が、前記収着ベッドシステムのシール構造の設計圧力を超えている基準と、
(iv)前記プロセスの流れ及び前記再生流体の流れの何れか一方の前記吸着材材料内での被吸着物の浸透により、前記プロセス流体又は前記再生流体に隣接する流体の流れの一方又は双方の前記吸着剤材料から流出するときの被吸着物の濃度が、吸着剤材料に流入する際に比して、10%以上増加又は減少している基準、
から選択された少なくとも1つの基準を満たしているかどうかを判断するステップと、
(b)前記ステップ(a)において、少なくとも1つの基準を満たしていると判断された場合に、他方の流体の流れとは分離して閉ループで再循環する分離流体の流れを前記システムに付加するステップであって、前記所定の体積の収着剤材料の塊が、動作サイクルで、前記分離流体の流れを2回通過させ、すなわち、前記プロセス流体の流れの前および前記再生流体の流れの後に1回、ならびに前記プロセス流体の流れの後および前記再生流体の流れの前に1回通過させるように、前記分離流体の流れが構成されるステップと、
(c)前記ステップ(a)において前記少なくとも1つの基準を満たさなくなると判断されるまで、前記ステップ(a)と(b)を繰り返すステップと、
を含むことを特徴とする方法。 - 前記ステップ(a)において、基準(i)、(ii)、(iii)、および(iv)の各々を満たしているかどうかが判断され、前記ステップ(b)において、基準(i)、(ii)、(iii)、および(iv)のいずれかが満たされた場合に分離流体の流れが付加されることを特徴とする請求項1に記載の方法。
- 前記ステップ(a)において、(i)、(ii)、(iii)、および(iv)から選択された複数の基準を満たしているかどうかが判断され、前記ステップ(b)において、前記選択された複数の基準が満たされた場合に分離流体の流れが付加されることを特徴とする請求項1に記載の方法。
- 前記ステップ(b)において、前記所定の体積の収着剤材料の塊が、動作サイクルで、分離流体の流れを2回通過させ、すなわち、前記プロセス流体の流れの直前に1回、および前記プロセス流体の流れの直後に1回通過させるように、前記分離流体の流れが構成されることを特徴とする請求項1に記載の方法。
- 前記ステップ(b)において、前記所定の体積の収着剤材料の塊が、動作サイクルで、前記分離流体の流れを2回通過させ、すなわち、前記再生流体の流れの直前に1回、および前記再生流体の流れの直後に1回通過させるように、前記分離流体の流れが構成されることを特徴とする請求項1に記載の方法。
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US10/832,363 US7101414B2 (en) | 2004-04-27 | 2004-04-27 | Rotary bed sorption system including at least one recycled isolation loop, and methods of designing and operating such a system |
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US (1) | US7101414B2 (ja) |
EP (4) | EP2275192B1 (ja) |
JP (2) | JP4542136B2 (ja) |
KR (1) | KR100847541B1 (ja) |
CN (4) | CN101537297B (ja) |
AU (2) | AU2004319328B2 (ja) |
BR (1) | BRPI0418707A (ja) |
MX (1) | MXPA06012454A (ja) |
WO (1) | WO2005107926A2 (ja) |
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2004
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- 2004-09-21 WO PCT/US2004/031000 patent/WO2005107926A2/en active Application Filing
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EP1748833A4 (en) | 2010-12-08 |
EP2502665A1 (en) | 2012-09-26 |
KR100847541B1 (ko) | 2008-07-22 |
BRPI0418707A (pt) | 2007-09-11 |
US7101414B2 (en) | 2006-09-05 |
EP2275192A3 (en) | 2012-09-12 |
WO2005107926A3 (en) | 2006-02-02 |
EP2275193A3 (en) | 2011-08-31 |
AU2004319328A1 (en) | 2005-11-17 |
CN101537297B (zh) | 2011-07-13 |
EP1748833A2 (en) | 2007-02-07 |
CN101537298A (zh) | 2009-09-23 |
AU2008207340B2 (en) | 2010-10-07 |
EP2502665B1 (en) | 2014-08-20 |
CN101537296A (zh) | 2009-09-23 |
CN100528294C (zh) | 2009-08-19 |
CN101537297A (zh) | 2009-09-23 |
JP2007534484A (ja) | 2007-11-29 |
AU2004319328B2 (en) | 2008-05-15 |
KR20070007838A (ko) | 2007-01-16 |
JP4542136B2 (ja) | 2010-09-08 |
EP2275192B1 (en) | 2014-08-13 |
EP2275192A2 (en) | 2011-01-19 |
EP2275193A2 (en) | 2011-01-19 |
EP2275193B1 (en) | 2014-02-19 |
WO2005107926A2 (en) | 2005-11-17 |
AU2008207340A1 (en) | 2008-09-04 |
CN1942231A (zh) | 2007-04-04 |
MXPA06012454A (es) | 2007-01-17 |
CN101537296B (zh) | 2011-07-13 |
US20050235827A1 (en) | 2005-10-27 |
JP2010207816A (ja) | 2010-09-24 |
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