JP2020508206A - ガス混合物の溶媒酸化のための活性化エネルギー減少剤 - Google Patents
ガス混合物の溶媒酸化のための活性化エネルギー減少剤 Download PDFInfo
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- JP2020508206A JP2020508206A JP2019540613A JP2019540613A JP2020508206A JP 2020508206 A JP2020508206 A JP 2020508206A JP 2019540613 A JP2019540613 A JP 2019540613A JP 2019540613 A JP2019540613 A JP 2019540613A JP 2020508206 A JP2020508206 A JP 2020508206A
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- C—CHEMISTRY; METALLURGY
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- Engineering & Computer Science (AREA)
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- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Inorganic Chemistry (AREA)
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Abstract
Description
下記各実施例においては、円筒形反応容器(内径(ID)102.4cm又は内径4フィート)を含むシアン化水素反応器は、予熱されたガス供給物を反応器に導入するための入口側配管と、金属触媒ガーゼを担持するためのガーゼホルダーと、特定の材料組成と重量を有する新しい金属触媒ガーゼと、反応器の生成ガスを冷却するための下流のシェルアンドチューブ式熱交換器と、生成ガスを下流の精製ユニットに移すための出口側配管と、を備えていた。各実施例においては、示される量の示される使用済みの触媒ガーゼ材料を、示される数の小片として形成し、示される方法で新しい金属触媒ガーゼと接触するように配置した。各実施例においては、所定の反応ガス混合物を示される温度まで予熱してから反応器に供給した。それとは別に、予熱された空気を、金属触媒ガーゼを特定の温度まで加熱するのに使用した。次いで、反応ガス混合物を、新しい金属触媒ガーゼと接触する使用済みの金属触媒ガーゼの小片の表面上で点火した。点火を検出するために、金属触媒ガーゼ全体の温度測定を行うように、与えられた数の熱電対を金属触媒ガーゼの真下に一定間隔で配置した。使用済みの金属触媒ガーゼの小片の位置と熱電対との間の関連性は全くなかった。点火は、少なくとも一つの熱電対読み取り値の急激な上昇によって示された。
反応物と空気ガスとの混合物を250℃及び265℃の温度になるまで予熱したことと、使用済みの金属触媒ガーゼの小片を使用しなかったこととを除き、四つの異なる反応器内で実施例1を繰り返した。各比較例においては、新しい金属触媒ガーゼを使用する点火は、複数の点火の試み(4〜11回の試み)を必要とした。上記実施例2と同一の反応器を使用した場合、ガス混合物の点火を4回試み、上記実施例1と同一の反応器を使用した場合、ガス混合物の点火を9回試みた。したがって、本発明は、反応器の実質的な稼働停止期間を防ぎ、生成物の収率を改善する。
Claims (10)
- 金属触媒材料であって、0.007〜0.25cmの直径を有し、鉄で汚染されていない、及び目視検査による試験によると、異物、炭化水素、又は油で汚染されていない、金属触媒ガーゼの重量に基づいて0.5〜1.5重量%の使用済みの金属触媒ガーゼの一個又は複数の小片と接触する、ワイヤー又は金属糸を含み、前記一個又は複数の小片が前記金属触媒ガーゼの表面上で互いに等間隔に配置される、又は一個の小片の場合、前記金属触媒ガーゼの中心と接触して又は同心円状に配置される、金属触媒材料。
- 前記一個又は複数の使用済みの金属触媒ガーゼ片が、使用済みの白金/ロジウム触媒ガーゼを含む、請求項1に記載の金属触媒材料。
- 前記一個又は複数の使用済みの金属触媒ガーゼの小片の量が、前記金属触媒ガーゼの重量に基づいて0.5〜1.0重量%の範囲にある、請求項1に記載の金属触媒材料。
- 前記一個又は複数の使用済みの金属触媒ガーゼの小片の数が2〜20である、請求項1に記載の金属触媒材料。
- 前記一個又は複数の使用済みの金属触媒ガーゼの小片がそれぞれ、ニッケル、白金、パラジウム、コバルト、ロジウム、銀、金、銅、イリジウム、レニウム、セリウム、それらの合金、それらの二元合金、それらの三元合金、それらの金属間化合物、及びそれらの組合わせから成る群から選択される、一個又は複数の金属のガーゼを含む、請求項1に記載の金属触媒材料。
- 前記金属触媒ガーゼが、新しい触媒、使用済みの触媒、リサイクル触媒、再生触媒、破損した触媒、汚染された触媒、及びそれらの組合わせから選択される、請求項1に記載の金属触媒材料。
- 前記金属触媒ガーゼと使用済みの金属触媒ガーゼの小片がそれぞれ、同一の金属、金属合金又は金属の組合わせで製造される、請求項1に記載の金属触媒材料。
- 前記金属触媒材料の前記表面における前記ガス反応物の点火を改善するための金属触媒材料の製造方法であって、前記金属触媒が、0.007〜0.25cmの直径を有するワイヤー又は金属糸を含み、新しい触媒、使用済み触媒、リサイクル触媒、再生触媒、破損した触媒、汚染された触媒、及び鉄で汚染されていない、及び目視検査による試験によると、異物、炭化水素、又は油で汚染されていない、使用済みの金属触媒ガーゼ材料の1〜20個の小片を含むそれらの組合せから選択され、前記使用済みの金属触媒ガーゼの小片が接触して互いに等距離に、又は前記金属触媒ガーゼの表面上に配置され、又は一個の場合には、金属触媒ガーゼの中心と接触して又は同心円状に配置され、使用済みの金属触媒ガーゼの小片の総量が、金属触媒ガーゼの重量に基づいて0.5〜1.5重量%の範囲である、製造方法。
- 前記金属触媒ガーゼが、白金/ロジウムの触媒ガーゼである、請求項8に記載の製造方法。
- 反応器内に、鉄で汚染されていない、及び目視検査による試験によると、異物、炭化水素、又は油で汚染されていない、一個又は複数の使用済み金属触媒ガーゼの小片の前記金属触媒ガーゼと接触する、0.007〜0.25cmの直径を有するワイヤー又は金属糸を含む金属触媒ガーゼの表面における、ガス反応物の点火を改善する方法であって、前記方法が、前記金属触媒ガーゼを空気で250〜335℃の温度まで予熱すること、空気又は酸素と一つ又は複数の反応ガスとの混合ガスを220〜300℃の温度まで予熱すること、前記一つ又は複数の又は全ての使用済みの金属触媒上で前記ガス混合物を点火するために前記ガス混合物を前記反応器に供給すること、そのような前記使用済みの金属触媒ガーゼの小片の総量が、前記金属触媒ガーゼの重量に基づいて0.5〜1.5重量%の範囲であること、を含む、方法。
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