JPWO2006025198A1 - 窒素ガスの分離方法及び分子ふるい炭素 - Google Patents
窒素ガスの分離方法及び分子ふるい炭素 Download PDFInfo
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Abstract
Description
(1)lnC≦0.325+5.14×ln{(0.64+0.098)×Q/(P+0.098)} (I)
(2)lnU≦2.124−0.135×lnC (II)
式中、Cは製品窒素中の酸素濃度(ppm)、Qは1分間に製造される吸着塔1基の有効容積あたりの窒素ガス量、Pは吸着圧力(MPa)、Uは製造される窒素ガス量に対する原料空気量の割合である。
(1)lnC≦0.325+5.14×ln{(0.64+0.098)×Q/(P+0.098)} (I)
(2)lnU≦2.124−0.135×lnC (II)
ここで、Cは製品窒素ガス中の酸素濃度(ppm)、Qは1分間に製造される吸着塔1基の有効容積あたりの窒素ガス量、Pは吸着圧力(MPa)、Uは製造される窒素ガス量に対する原料空気量の割合である。
(1)lnC≦0.325+5.14×ln{(0.64+0.098)×Q/(P+0.098)} (I’)
(2)lnU≦2.124−0.135×lnC (II’)
ここで、Cは製品窒素ガス中の酸素濃度(ppm)、Qは1分間に製造される吸着塔1基の有効容積あたりの窒素ガス量、Pは吸着圧力(MPa)、Uは製造される窒素ガス量に対する原料空気量の割合である。
(1)lnC≦0.325+5.14×ln{(0.64+0.098)×Q/(P+0.098)} (I)
(2)lnU≦2.124−0.135×lnC (II)
式中、Cは製品窒素ガス中の酸素濃度(ppm)、Qは1分間に製造される吸着塔1基の有効容積あたりの窒素ガス量、Pは吸着圧力(MPa)、Uは製造される窒素ガス量に対する原料空気量の割合である。
lnC≦0.0958+5.25×ln{(0.64+0.098)×Q/(P+0.098)} (III)
微粉砕した椰子殻炭100重量部にコールタール40重量部及び水8重量部を加えてよく混練し、油圧プレス機で加圧し0.8mmのノズルから押し出し円柱状に形成した。得られた円柱状の造粒炭を流動式乾留炉を用いて600℃で30分間熱処理し窒素中で冷却した。
塩酸洗浄を行わないこと以外は分子ふるい炭素Aと同様にして分子ふるい炭素を得た。
塩酸洗浄を常温で1回行うこと以外は分子ふるい炭素Aと同様にして分子ふるい炭素を得た。
1.6mmのノズルを使用すること以外は分子ふるい炭素Aと同様にして分子ふるい炭素を得た。
0.4mmのノズルを使用すること以外は分子ふるい炭素Aと同様にして分子ふるい炭素を得た。
微粉砕した椰子殻炭100重量部にコールタール40重量部及び水8重量部を加えてよく混練し、油圧プレス機で加圧し0.6mmのノズルから押し出し円柱状に形成した。得られた円柱状の造粒炭を深江パウテック株式会社製ハイスピードミキサーFS−G型を用いて60℃、回転数400rpmにて平均粒径1.0mmの球状に成型した。この球状炭を流動式乾留炉を用いて600℃で30分間熱処理し窒素中で冷却した。以後は分子ふるい炭素Aと同様に処理し分子ふるい炭素Fを得た。以上の分子ふるい炭素A〜Fについて強熱残分としての灰分、酸素平衡吸着量を測定し表1に示した。表1において、mLはミリリットルを表わす。強熱残分が少ないと酸素平衡吸着量は増加する傾向を示すことがわかる。
吸着塔に上記分子ふるい炭素A〜Fを各々3.0L(リットル)充填し、図1に示す装置を使用し表2に示す圧力でPSAを実施した。結果を表2に示す。表2において、NLはノルマルリットルであり、標準状態における窒素ガス量を表わす。
2 圧縮機
3 冷却器
4 吸着塔
5 吸着塔
6 製品窒素ガス貯槽
7〜14 弁
15 オリフィス
16 製品窒素ガス取出しライン
17 排気ガスライン
Claims (8)
- 分子ふるい炭素を充填した少なくとも2基の吸着塔の一方に窒素を主成分とする原料ガスを加圧下で供給して高圧吸着を行い、吸着を終えた吸着塔は低圧再生を行い、それぞれの吸着塔で高圧吸着と低圧再生を交互に繰り返して窒素を製品ガスとして分離する窒素ガスの分離方法において、分子ふるい炭素として強熱残分0.7重量%以下の分子ふるい炭素を使用し、下記(I)及び(II)式を満足することを特徴とする窒素ガスの分離方法。
(1)lnC≦0.325+5.14×ln{(0.64+0.098)×Q/(P+0.098)} (I)
(2)lnU≦2.124−0.135×lnC (II)
(式中、Cは製品窒素ガス中の酸素濃度(ppm)、Qは1分間に製造される吸着塔1基の有効容積あたりの窒素ガス量、Pは吸着圧力(MPa)、Uは製造される窒素ガス量に対する原料空気量の割合を示す。) - 該分子ふるい炭素が植物系の炭素質材料を原料とする分子ふるい炭素である請求項1記載の窒素ガスの分離方法。
- 該植物系の炭素質材料が椰子殻である請求項2記載の窒素ガスの分離方法。
- 該分子ふるい炭素が球状又は円柱状である請求項1〜3いずれかに記載の窒素ガスの分離方法。
- 該分子ふるい炭素の外径が0.4〜1.5mmである請求項1〜4いずれかに記載の窒素ガスの分離方法。
- 強熱残分が0.7%以下の分子ふるい炭素であって、少なくとも2基の吸着塔の一方に窒素を主成分とする原料ガスを加圧下で供給して高圧吸着を行い、吸着を終えた吸着塔は低圧再生を行い、それぞれの吸着塔で高圧吸着と低圧再生を交互に繰り返して窒素を製品ガスとして分離するとき、下記(I’)及び(II’)式を満足する分子ふるい炭素。
(1)lnC≦0.325+5.14×ln{(0.64+0.098)×Q/(P+0.098)} (I’)
(2)lnU≦2.124−0.135×lnC (II’)
(式中、Cは製品窒素中の酸素濃度(ppm)、Qは1分間に製造される吸着塔1基の有効容積あたりの窒素ガス量、Pは吸着圧力(MPa)、Uは製造される窒素ガス量に対する原料空気量の割合を示す。) - 該分子ふるい炭素が、植物系の炭素材を原料とする分子ふるい炭素であり、細孔調整を行う工程以前に脱灰処理を行う請求項6記載の分子ふるい炭素。
- 該該植物系の炭素質材料が椰子殻である請求項7記載の分子ふるい炭素。
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PCT/JP2005/014583 WO2006025198A1 (ja) | 2004-08-30 | 2005-08-09 | 窒素ガスの分離方法及び分子ふるい炭素 |
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CN100548874C (zh) | 2009-10-14 |
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KR20070046155A (ko) | 2007-05-02 |
US7670408B2 (en) | 2010-03-02 |
WO2006025198A1 (ja) | 2006-03-09 |
KR100851798B1 (ko) | 2008-08-13 |
RU2355630C2 (ru) | 2009-05-20 |
JP4893944B2 (ja) | 2012-03-07 |
US20070261550A1 (en) | 2007-11-15 |
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