JP4498748B2 - 中空糸膜接触装置およびプロセス - Google Patents
中空糸膜接触装置およびプロセス Download PDFInfo
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- JP4498748B2 JP4498748B2 JP2003578047A JP2003578047A JP4498748B2 JP 4498748 B2 JP4498748 B2 JP 4498748B2 JP 2003578047 A JP2003578047 A JP 2003578047A JP 2003578047 A JP2003578047 A JP 2003578047A JP 4498748 B2 JP4498748 B2 JP 4498748B2
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- hollow fiber
- gas
- housing
- contact device
- liquid
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- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
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Description
キャラクタリゼーション方法
本発明の外殻側接触装置は、管側接触装置に対して本質的な利点を有する。管側流れの物質移動式は以下の式のような特徴を有する。
Sh=K*d/Dab=1.64*Re0.33Sc0.33*(D/L)0.33
ここに、
Sh=シャーウッド数
K=物質移動係数(cm2/s)
L=繊維の長さ
d=繊維のID、cm
Dab=オゾンの拡散係数
Re=レイノルズ数、pvd/μ
Sc=シュミット数、μ/ρDab
v=速度(cm/秒)
ρ=密度(cm3/秒)である。
Sh=K*d/Dab=0.36*Re0.55Sc0.33
管側法の式と比較してみると、上記の式から、d(繊維の直径)およびL(繊維の長さ)に対する依存性が欠如しているということに注目されたい。外殻側移動の効果は、管側の式で外殻側の式を除することにより推測することができる。外殻側が、管側より5(から10(の間にあることがわかる。外殻側移動面の補足的な効果は膜外部面積である。膜外部面積は内部面積(管側移動)より常に大きいので、外殻側移動は接触域がより大きいという効果を有する。
P=HX (1)
この比例定数(H)はヘンリーの係数と呼ばれ、温度(T)およびpH(式2)に応じて変動する。[Jhon A.Roth、「水の中のオゾンの溶解度」、Ind.Eng.Chem.Fundam.1981,20,137−140]。
H=3.8x107[OH−]0.035exp(2428/T) (2)
ヘンリーの定数の値は文献から利用することができる。[化学工学ハンドブック、年、ページ(#2−125);およびB.Parekh、「水性洗浄におけるオゾン(第I部:技術)、応用編 MAL126、Mykrolis corporation,Bedford,MA USA]。式1および2から、与えられたオゾン発生器条件の温度の関数としてオゾンの平衡溶解度を計算することができる。例として、図12に、0.11気圧のオゾンガス側圧力で温度の関数として水中平衡オゾン溶解度(ppm)のプロットを示す。これは与えられた温度で達成可能な最大の濃度である。溶液pHを減少させるとオゾン溶解度が上がるが、pH2以下では、Cl−イオンがオゾンで反応するのでHClによってオゾン溶解度が低下する。
用途によっては、このオゾン化水は中央部で製造され、次いでユースポイントの個々のツールへ送出するために再循環される。設計によっては、補充量のオゾンをユースポイントで追加する。図15は、オゾン−DI再循環ループの概略図を示す。
Claims (11)
- パーフルオロ化熱可塑性ハウジング(12)と、
上記ハウジング内に配置されている複数の多孔性のパーフルオロ化熱可塑性中空糸膜(14)と、を含み、
前記ハウジングは、パーフルオロ化熱可塑性中空糸膜ルーメンの第1の端部にガスを供給するためのガス入口(22)と、パーフルオロ化熱可塑性中空糸膜の第2の端部からガスを除去するためのガス出口(24)とを有し、
前記ハウジングは、液体を供給してパーフルオロ化熱可塑性中空糸膜の外表面と接触させるための液体入口(18)と、ハウジング内のパーフルオロ化熱可塑性中空糸膜の外表面と接触する液体を除去するための液体出口(20)とを有する接触装置であって、
上記液体入口に隣接したパーフルオロ化熱可塑性中空糸膜を分離するスペーサー手段(28、38)を備えていることを特徴とする気液相接触装置。 - 上記スペーサー手段が、パーフルオロ化熱可塑性中空糸膜(14)を開き、ハウジング(12)内の圧力損失を引き下げて接触装置内の液体の自由な流れを促進する、平行に配置されたスペーサープレート(28)を含む請求項1に記載の接触装置。
- 上記スペーサー手段が、パーフルオロ化熱可塑性中空糸膜(14)を分離する拡張管(38)の形態であり、該管は、液体がハウジング(12)へ通り抜けることができるホールを含み、それによってハウジング内への液体の進入を促進しハウジング内の圧力損失を引き下げるものである請求項1に記載の接触装置。
- 前記パーフルオロ化熱可塑性中空糸膜が、第1の端部および第2の端部、外表面および内表面を有し、
パーフルオロ化熱可塑性中空糸膜の各端部は、パーフルオロ化熱可塑性シールで注封されてハウジングとの一体の端部構造を形成し、パーフルオロ化熱可塑性中空糸膜の各端部は流体流れに対して開口しており、前記ハウジングは、内壁および外壁を有し、ハウジングの内壁およびパーフルオロ化熱可塑性中空糸膜の外表面が流体流れ容量を規定している請求項1〜3の何れかに記載の接触装置。 - 多孔性パーフルオロ化熱可塑性中空糸膜の充填密度が、少なくとも0.34m2膜外部面積/ハウジング内容量リットルである請求項1〜4の何れかに記載の接触装置。
- 充填密度が少なくとも0.6m2膜外部面積/ハウジング内容量リットルである請求項5に記載の接触装置。
- パーフルオロ化熱可塑性中空糸膜が、ハウジングに対して流体密封化されかつ導管を通るガス流に開口している複数の多孔性導管の形態であり、該導管は入口と出口を有している、請求項1〜6の何れかに記載の接触装置と、
前記ハウジングのガス入口に接続されたオゾン含有ガス源と、
前記ハウジングの液体入口に接続された水性液体源とを含み、
前記オゾン含有ガスが導管から水性液体中に溶解する、
流体中にオゾン含有ガスを溶解する接触装置。 - 前記パーフルオロ化熱可塑性中空糸膜がねじられている請求項7に記載の装置。
- オゾン含有ガスをパーフルオロ化熱可塑性中空糸膜ルーメンを通して流通させ、水性液体をパーフルオロ化熱可塑性中空糸膜の外表面と接触させることを含む、
請求項1〜6の何れかに記載の接触装置または請求項7または8に記載の接触装置を使用して液体中にガスを溶解させる方法。 - オゾンガスが152ゲージkPa(22ゲージpsi)の圧力、オゾンガスの濃度が250g/Nm3、オゾンガス流が5slpm、かつ、脱イオン水流が18.9lpm(5gpm)である場合に、前記ハウジングとパーフルオロ化熱可塑性中空糸膜とが、25℃で、オゾンガスを0.4ppm/脱イオン水lpm/ハウジング内部容量リットルよりも多く脱イオン水中に溶解するように構成されている請求項9に記載の方法。
- 効率が、オゾンガス0.6ppm/脱イオン水lpm/内部カートリッジ容量リットルより大きい請求項9または10に記載の方法。
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- 2003-03-06 KR KR1020047014623A patent/KR101049989B1/ko active IP Right Grant
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KR101322709B1 (ko) * | 2011-12-08 | 2013-10-28 | (주)세프라텍 | 수용성 기체 분리 포집을 위한 막 접촉 방법 및 그 시스템 |
TWI802696B (zh) * | 2018-05-28 | 2023-05-21 | 日商野村微科學股份有限公司 | 超過濾膜模組及使用超過濾膜模組之超純水製造方法 |
Also Published As
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EP1485193A4 (en) | 2005-11-16 |
KR101049989B1 (ko) | 2011-07-19 |
TW200305454A (en) | 2003-11-01 |
US20050230856A1 (en) | 2005-10-20 |
KR20040101318A (ko) | 2004-12-02 |
WO2003080228A1 (en) | 2003-10-02 |
DE60316264T2 (de) | 2008-05-29 |
CN1642628A (zh) | 2005-07-20 |
CN1642628B (zh) | 2010-06-16 |
TW590790B (en) | 2004-06-11 |
JP2005520679A (ja) | 2005-07-14 |
US20080156191A1 (en) | 2008-07-03 |
EP1485193B1 (en) | 2007-09-12 |
EP1485193A1 (en) | 2004-12-15 |
DE60316264D1 (de) | 2007-10-25 |
US7717405B2 (en) | 2010-05-18 |
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