JP5731092B2 - マイクロチャネルプロセス技術を用いてエチレンをエチレンオキシドに変換するためのマイクロチャネル反応器及びそれを用いた方法 - Google Patents
マイクロチャネルプロセス技術を用いてエチレンをエチレンオキシドに変換するためのマイクロチャネル反応器及びそれを用いた方法 Download PDFInfo
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Description
(1)反応中の全原料基準での酸素に対するエチレンのモル比は、約4:1未満、一実施態様では約3:1未満、一実施態様では約0.2:1から約4:1の範囲、一実施態様では約0.5:1から約3:1の範囲、一実施態様では約1:1から約3:1の範囲にすることができる。
(2)反応体組成物の中の希釈剤濃度は、約50体積%未満、一実施態様では約30体積%未満、一実施態様では約10体積%未満、一実施態様では約5体積%未満にすることができる。
(3)約15%より大きい、一実施態様では約20%より大きい、一実施態様では約25%より大きい、一実施態様では約30%より大きいエチレンのマイクロチャネル反応器を通る通過あたり反応率を実現することができる。
(4)全原料基準での反応体組成物の中の酸素濃度(下記で考察する段階的な酸素の添加を含む)は、約8体積%より大きくてもよく、一実施態様では約10体積%より大きくてもよく、一実施態様では約12体積%より大きくてもよい。
(5)マイクロチャネル反応器を通る通過あたりの酸素反応率は、約25%より大きくてもよく、一実施態様では約35%より大きくてもよく、一実施態様では約40%より大きくてもよい。
(6)反応器壁を通る熱流束は、約1W/cm2より大きくてもよく、一実施態様では約2W/cm2より大きくてもよく、一実施態様では約3W/cm2より大きくてもよい。
(7)生成物の中のエチレンオキシドに対する炭素酸化物(CO、CO2)の比は、エチレンオキシドのモルあたり約0.5モルの炭素酸化物より小さくてもよく、一実施態様では約0.25より小さくてもよく、一実施態様ではエチレンオキシドのモルあたり約0.15モルの炭素酸化物より小さくてもよい。
(8)マイクロチャネル反応器の中のプロセスマイクロチャネルによる圧力降下は、平方インチあたり約25ポンド(psi)(1.74気圧)より小さく、一実施態様では約1.5気圧より小さく、一実施態様では約1.35気圧より小さくすることができる。
(9)マイクロチャネル反応器の中のプロセスマイクロチャネル内の圧力は、従来のプロセス(すなわち非マイクロチャネル反応器プロセス)より大きくすることができ、例えば約25気圧、一実施態様では約30気圧、一実施態様では約35気圧にも達するゲージ圧。
(10)触媒の生産性(作り出されるエチレンオキシドのグラム数/触媒のグラム数/時間)は、従来のプロセスより大きくすることができる。
Claims (14)
- エチレンと酸素または酸素源とハロゲン化アルキルを含む反応体を酸素に対するエチレンのモル比を0.5:1から3:1の範囲でマイクロチャネル反応器に流して、混合させ、触媒と反応体とを1〜750ミリ秒の範囲の接触時間で接触させてエチレンオキシドを含む生成物を生成させる方法であって、
前記マイクロチャネル反応器は、プロセスマイクロチャネルと、熱交換チャネルとを備え、前記プロセスマイクロチャネルは触媒を有する反応ゾーンと前記反応ゾーンよりも上流に位置する混合ゾーンとを有し、前記熱交換チャネルは前記プロセスマイクロチャネルと隣接しており、
前記反応体を前記プロセスマイクロチャネルの中に流して前記混合ゾーンで前記反応体の一部又は全部を混合させて前記反応ゾーンで触媒と接触させ、熱交換流体を前記熱交換チャネルに流し、前記プロセスマイクロチャネル内で行われる前記反応体の発熱反応による熱が前記熱交換流体に伝熱して排出させ、
生成物は前記マイクロチャネル反応器から流し出され、前記マイクロチャネル反応器から流れ出る生成物の温度は50℃〜300℃の範囲である方法。 - 前記マイクロチャネル反応器は、前記プロセスマイクロチャネルに隣接する第二の反応体流チャネルと、前記プロセスマイクロチャネルの長さ方向の少なくとも一部に沿って分布し前記第二の反応体流チャネルと連通する複数の開口とを備え、前記エチレンあるいは前記酸素または酸素源を含む第二の反応体流は前記第二の反応体流チャネルから前記開口群を通して前記プロセスマイクロチャネルの中に流す請求項1に記載の方法。
- 前記マイクロチャネル反応器は、前記反応体が前記プロセスマイクロチャネルに入るための流れ通路を提供するヘッダ、および前記生成物が前記プロセスマイクロチャネルから出るための流れ通路を提供するフッタを備える請求項1又は2に記載の方法。
- 前記マイクロチャネル反応器は、前記マイクロチャネル反応器は入口と出口とを有し、前記生成物は前記出口を通って前記マイクロチャネル反応器から出て行き、前記マイクロチャネル反応器から出る前記生成物の少なくとも一部は前記マイクロチャネル反応器への前記入口にリサイクルされる請求項1から3のいずれか一つに記載の方法。
- 前記マイクロチャネル反応器は、前記マイクロチャネル反応器の一部はエチレン生成のために用いられ、前記マイクロチャネル反応器の一部はエチレンオキシド生成のために用いられる、請求項1から4のいずれか一つに記載の方法。
- 前記マイクロチャネル反応器は、前記プロセスマイクロチャネルは内部表面を有し、前記触媒は前記プロセスマイクロチャネルの前記内部表面の上に被覆される請求項1から5のいずれか一つに記載の方法。
- 前記触媒は、側流構造、貫通流構造、固体粒子、発泡体、フェルト、詰め物、ハニカム、挿入式フィン、隣接するギャップを有する側流構造、隣接するギャップを有する発泡体、ギャップを有するフィン構造物、挿入された基板の上のウォッシュコート、または流れのための対応するギャップを有し前記流れの方向に平行なガーゼ、またはこれらの二つ以上の組み合わせである請求項1から6のいずれか一つに記載の方法。
- 前記触媒は、Ag,Mo,Re,W,V,Nb,Sb,Sn,Pt,Pd,Cs,Zr,Cr,Mg,Mn,Ni,Co,Ce,またはこれらの二つ以上の混合物を含む金属の少なくとも一つの金属、金属酸化物または混合金属酸化物を含む、請求項1から7のいずれか一つに記載の方法。
- 前記触媒は、アルカリまたはアルカリ土類金属、遷移金属、希土類金属、ランタニド、P、Bi、またはこれらの二つ以上の混合物の金属、酸化物または混合金属酸化物をさらに含む、請求項8に記載の方法。
- 前記触媒は、金属酸化物、シリカ、メソ多孔質材料、耐火材料またはそれらの二つ以上の組み合わせを含む担体を含む、請求項1から9のいずれか一つに記載の方法。
- 前記生成物をクエンチする請求項1から10のいずれか一つに記載の方法。
- 前記マイクロチャネル反応器から出る前記生成物は、最長でも500ミリ秒の範囲の時間内に、最高でも200℃の温度にクエンチされる請求項11に記載の方法。
- 前記マイクロチャネル反応器は複数のプロセスマイクロチャネルを備え、前記プロセスマイクロチャネルに入る前記反応体の前記温度は150℃から1000℃の範囲であり、または前記反応体および/または生成物と前記触媒との接触時間は0.1ミリ秒から100秒であり、または前記プロセスマイクロチャネル内の前記ゲージ圧は最大35気圧であり、または前記プロセスマイクロチャネルを通る前記反応体および/または生成物の前記流れの前記空間速度は、少なくとも100hr −1 である請求項1から12のいずれか一つに記載の方法。
- 前記プロセスマイクロチャネルの長さに沿う温度プロフィルは該プロセスマイクロチャネルの長さに沿ってさまざまな位置でさまざまな温度に調整される請求項1から13のいずれか一つに記載の方法。
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JP (1) | JP5731092B2 (ja) |
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- 2005-08-11 EP EP05784239.5A patent/EP1786797B1/en not_active Not-in-force
- 2005-08-11 CN CN2005800273563A patent/CN101023068B/zh not_active Expired - Fee Related
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CA2575165A1 (en) | 2006-02-23 |
CA2575165C (en) | 2014-03-18 |
EP1786797A1 (en) | 2007-05-23 |
JP2008509916A (ja) | 2008-04-03 |
CN101023068B (zh) | 2013-02-13 |
US20060036106A1 (en) | 2006-02-16 |
WO2006020709A1 (en) | 2006-02-23 |
EP1786797B1 (en) | 2014-11-26 |
US8703984B2 (en) | 2014-04-22 |
CN101023068A (zh) | 2007-08-22 |
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