JP2022514390A - ゼオライト性アグロメレート化材料、調製方法及び非極低温ガス分離のための使用 - Google Patents
ゼオライト性アグロメレート化材料、調製方法及び非極低温ガス分離のための使用 Download PDFInfo
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- JP2022514390A JP2022514390A JP2021535694A JP2021535694A JP2022514390A JP 2022514390 A JP2022514390 A JP 2022514390A JP 2021535694 A JP2021535694 A JP 2021535694A JP 2021535694 A JP2021535694 A JP 2021535694A JP 2022514390 A JP2022514390 A JP 2022514390A
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- zeolite
- zeolitic
- weight
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- agglomerating material
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
- B01D2253/1085—Zeolites characterized by a silicon-aluminium ratio
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/30—Physical properties of adsorbents
- B01D2253/302—Dimensions
- B01D2253/304—Linear dimensions, e.g. particle shape, diameter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/12—Oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/16—Hydrogen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/102—Nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D2257/502—Carbon monoxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/45—Gas separation or purification devices adapted for specific applications
- B01D2259/4533—Gas separation or purification devices adapted for specific applications for medical purposes
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- 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
- Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
Abstract
Description
水銀浸入によって測定される、本発明に関連して使用され得るゼオライト性アグロメレート化材料のマクロ細孔及びメソ細孔の総容積は、有利には、0.15cm3.g-1~0.5cm3.g-1の間、好ましくは0.20cm3.g-1~0.40cm3.g-1の間、非常に好ましくは0.20cm3.g-1~0.35cm3.g-1の間であり、測定は、少なくとも95%がリチウムイオンと交換されたアグロメレート化材料について行われる。
%NZP=100-%ZP、
ここで、ゼオライト性アグロメレート化材料の総重量に対し、%NZPはNZPの重量パーセントを表し、%ZPはゼオライト相(ZP)の重量パーセントを表す。非常に好ましい態様によれば、本発明のゼオライト性アグロメレート化材料は、例えば、
- 体積-平均直径が400μmのビーズ形態の材料で、数-平均直径が5μmに等しいLSX型ゼオライトを含み、80に等しい、ゼオライト結晶の数-平均直径に対する吸着剤の粒子の体積-平均直径の比に対応し、又は
- 体積-平均直径が350μmのビーズ形態の材料で、数-平均直径が5μmに等しいLSX型ゼオライトを含み、70に等しい、ゼオライト結晶の数-平均直径に対する吸着剤の粒子の体積-平均直径の比に対応し、又は
- 体積-平均直径が250μmのビーズ形態の材料で、数-平均直径が10μmに等しいLSX型ゼオライトを含み、25に等しい、ゼオライト結晶の数-平均直径に対する吸着剤の粒子の体積-平均直径の比に対応し、又は
- 体積-平均直径が300μmのビーズ形態の材料で、数-平均直径が6μmに等しいLSX型ゼオライトを含み、50に等しい、ゼオライト結晶の数-平均直径に対する吸着剤の粒子の体積-平均直径の比に対応し、又は
- 体積-平均直径が150μmのビーズ形態の材料で、数-平均直径が9μmに等しいLSX型ゼオライトを含み、17に等しい、ゼオライト結晶の数-平均直径に対する吸着剤の粒子の体積-平均直径の比に対応し、又は
- 体積-平均直径が350μmのビーズ形態の材料で、数-平均直径が11μmに等しいLSX型ゼオライトを含み、32に等しい、ゼオライト結晶の数-平均直径に対する吸着剤の粒子の体積-平均直径の比に対応し、
このリストに限定されない。
a) 好ましくは少なくとも80重量%のクレー(複数可)を含有するアグロメレーションバインダーによるゼオライト結晶のアグロメレーション、成形、乾燥及び焼成のステップ、
b) バインダーの少なくとも一部を任意にゼオライト化するステップ、
c) カチオン交換ステップ、
d) 任意の乾燥ステップ、及び
e) 得られたゼオライト性アグロメレート化材料の活性化ステップ。
本発明によるゼオライト性アグロメレート化材料の物理的特性は、当業者に知られた方法により評価され、その中の主なものを以下に記載する。
40kV-30mAで使用するCuチューブ、
Sollerスリットサイズ=2.5°、照射面幅16mm、
10rpmで回転する試料装置、
測定範囲:4°<2θ<70°、
増分:0.015°、
増分当たりの計測時間:0.8秒。
本発明のゼオライト性アグロメレート化材料の平均体積直径(又は「体積-平均直径」)は、試料がカメラレンズの前を通るようにすることができるコンベアベルトを用いて、ISO 13322-2:2006規格に従った画像形成による吸着材料の試料の粒径分布の分析によって決定される。
以下の本文では、与えられた質量は焼成当量として表される。
d50=5.6μmのLSXゼオライト結晶を上記の比較例1で述べたように調製するが、剪断速度は5s-1である。d50=5.6μmのこれらのLSXゼオライト結晶1700g、シャラント産カオリナイト300g、Klebosol(R) 30の名で販売されているコロイダルシリカ40g(焼成当量)、及び成形前のペーストの強熱減量が39%になるような量の水からなる均質な混合物を調製する。
d50=5.6μmのLSXゼオライト結晶を上記比較例2で述べたように調製する。次に、d50=5.6μmのLSXゼオライト結晶1700g、Zeoclay(R) アタパルジャイト300g及び成形前のペーストの強熱減量が39%になるような量の水からなる均質な混合物を調製する。
d50=7μmのLSXゼオライト結晶を上記の比較例1で述べたように調製するが、剪断速度は2.5s-1である。d50=7μmのLSXゼオライト結晶1700g、Zeoclay(R) アタパルジャイト300g及び成形前のペーストの強熱減量が39%になるような量の水からなる均質な混合物を調製する。このようにして調製したペーストを、ゼオライト性アグロメレート化材料のビーズを製造するために使用する。
d50=6.5μmのLSXゼオライト結晶を上記の比較例1で述べたように調製するが、剪断速度は3s-1である。d50=6.5μmのLSXゼオライト結晶1700g、シャラント産カオリナイト300g、Klebosol(R) 30の名で販売されているコロイダルシリカ40g(焼成当量)、及び成形前のペーストの強熱減量が39%になるような量の水からなる均質な混合物を調製する。
圧力変動吸着(PSA)を用いて吸着剤の2つの固定床でN2/O2分離試験を行った。
図1は製造された組立体を記載する。ゼオライト性アグロメレート化材料(14)で満たされた、内径が6cmに等しく、内部高さが等しい2本のカラム(1)及び(2)に、乾燥空気(13)を供給し、弁(4)と(5)によって間欠的に減圧する。異なる高さのカラムの異なる組が提供される。表1は吸着相及び脱離相に応じた弁のそれぞれの状態を示す。
Claims (13)
- 少なくとも1種のゼオライト及び少なくとも1種のバインダーを含むゼオライトアグロメレート粒子の形態のゼオライト性アグロメレート化材料であって、ゼオライト結晶の数-平均直径に対する該ゼオライトアグロメレート粒子の体積-平均直径の比が70以下であり、該ゼオライトアグロメレート粒子の体積-平均直径が20μm~400μmの間(両限界値を含む)、好ましくは50μm~380μmの間(両限界値を含む)である、ゼオライト性アグロメレート化材料。
- 少なくともFAU型ゼオライト結晶を含み、±0.05の測定不確実性で、X線蛍光法により測定した1~2.5の間、好ましくは1~2.0の間、より好ましくは1~1.8の間、最も好ましくは1~1.6の間のSi/Al原子比を有する、請求項1に記載のゼオライト性アグロメレート化材料。
- Li2Oの重量で表されるリチウム含有率が、ゼオライト性アグロメレート化材料の総重量に対して、8.0重量%~12.0重量%の間(両限界値を含む)であり、好ましくは9.0%~12.0%の間(両限界値を含む)であり、より好ましくは10重量%~12.0重量%の間(両限界値を含む)である、請求項1又は2に記載のゼオライト性アグロメレート化材料。
- ゼオライト結晶が、5.0μm~20.0μmの間、好ましくは5.0μm~15.0μmの間の数-平均直径(d50)を有する、請求項1~3のいずれか一項に記載の材料。
- 非ゼオライト相(NZP)の量が、ゼオライト性アグロメレート化材料の総重量に対して、X線回折(XRD)によって測定される0<NZP≦25重量%、好ましくは0<NZP≦20重量%、より好ましくは0<NZP≦15重量%、有利には0<NZP≦10重量%、さらに有利には0<NZP≦8重量%のようである、請求項1~4のいずれか一項に記載の材料。
- かさ密度が0.50kg.m-3~0.80kg.m-3の間、好ましくは0.55kg.m-3~0.75kg.m-3の間、より好ましくは0.60kg.m-3~0.70kg.m-3の間である、請求項1~5のいずれか一項に記載の材料。
- 以下のステップ
a) 好ましくは少なくとも80重量%のクレーを含有するアグロメレーションバインダーによるゼオライト結晶のアグロメレーション、成形、乾燥及び焼成のステップ、
b) バインダーの少なくとも一部を任意にゼオライト化するステップ、
c) カチオン交換ステップ、
d) 任意の乾燥ステップ、及び
e) 得られたゼオライト性アグロメレート化材料の活性化ステップ
を含む、請求項1~6のいずれか一項に記載のゼオライト性吸着材を調製する方法。 - 任意のゼオライト化ステップは、一般に水溶性であり、例えば、水酸化ナトリウム及び/又は水酸化カリウムの水溶液であり、その濃度は0.5Mより好ましくは大きい、アルカリ性塩基性溶液中にアグロメレートを浸漬することにより行うことができる、請求項7に記載の方法。
- 工業用ガスの分離、及びまた空気からのガスの分離、特に高純度の医療用酸素の製造のための、並びに最も具体的には圧力変動方法における、例えば、工業用N2/O2 VPSA、工業用N2/O2 PSA、医療用N2/O2 VPSA及び医療用N2/O2 PSA方法における窒素吸着材としての請求項1~6のいずれか一項に記載の材料の使用。
- 呼吸補助用酸素濃縮器中の吸着要素としての請求項9に記載の使用。
- 請求項1~6のいずれか一項に記載のゼオライト性吸着材を少なくとも1種類含むゼオライト性吸着剤の消耗品カートリッジ。
- 少なくとも1種の樹脂、好ましくはポリマー樹脂、好ましくは熱可塑性ホモポリマー及び/又はコポリマー並びに重縮合物から選択されるポリマー樹脂をさらに含む、請求項11に記載のカートリッジ。
- 輸送可能であり、移動可能であり、好ましくは携帯可能であり、請求項1~6のいずれか一項に記載のゼオライト性吸着材を少なくとも1種含む呼吸補助用酸素濃縮器。
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