JP5638746B2 - 有機物を熱分解するための触媒と方法と、そのような触媒を製造する方法 - Google Patents
有機物を熱分解するための触媒と方法と、そのような触媒を製造する方法 Download PDFInfo
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- JP5638746B2 JP5638746B2 JP2008211286A JP2008211286A JP5638746B2 JP 5638746 B2 JP5638746 B2 JP 5638746B2 JP 2008211286 A JP2008211286 A JP 2008211286A JP 2008211286 A JP2008211286 A JP 2008211286A JP 5638746 B2 JP5638746 B2 JP 5638746B2
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Description
硫酸法による酸化チタン製造工程のうち、加水分解工程から得られたチタン水酸化物のスラリーを濾過、水洗し、これをリパルプして、スラリーAを得た。このスラリーAにゾル化剤として硝酸を加え、チタン酸化物のゾルBを得た。更に、このゾルBの一部を100℃に加熱、乾燥し、乾燥ゲルとし、これを電気炉中、500℃で3時間焼成して、酸化チタン焼成物Cを得た。
実施例1で得られたチタン水酸化物のスラリーAを100℃で加熱、乾燥し、乾燥ゲルとし、これを電気炉中にて500℃で3時間焼成し、粉砕処理して、酸化チタン焼成物Dの粉砕物を得、この酸化チタン焼成物Dの粉砕物50重量部と前記酸化チタン焼成物Cの粉砕物50重量部を混合した。
実施例1で得られた酸化チタンの顆粒に転動造粒機「マルメライザー」にて実施例1で得られた酸化チタンCの粉砕物と水で4倍希釈した前記ゾルBを噴霧しながら、より球状に整粒し、得られた粒子を実施例1におけると同様にして、粒径が0.1〜1.2mmの範囲の顆粒を得た。この酸化チタンの顆粒は、比表面積59m2/g、細孔容積0.17mL/g、タップ密度1.18g/mL、摩耗率0.3%であった。
実施例1で得たチタン酸化物のゾルBとタングステン酸アンモニウムを混合した。この混合物を100℃に加熱、乾燥して、乾燥ゲルとし、これを電気炉中、500℃で3時間焼成して、チタン/タングステン複合酸化物(酸化チタン/酸化タングステン重量比90:10)の焼成物を得た。
実施例1と同様にして、粒径が1.2mm以上の酸化チタンの顆粒を得た。実施例1と同様にして、上記酸化チタンの顆粒を熱分解触媒として用いて、ポリエチレン樹脂がすべて熱分解されて、ガス化するまでの時間を測定したところ、16分であった。
実施例1と同様にして、粒径が0.1mm以下の酸化チタンの顆粒を得た。この酸化チタンの顆粒を熱分解触媒として用いて、実施例1と同様にして、ポリエチレン樹脂がすべて熱分解されて、ガス化するまでの時間を測定したところ、10分であった。触媒性能の試験の後、装置内に残留した顆粒は、重量が50gから40gに減少していた。
実施例1において得られた酸化チタン顆粒を篩分けして、粒径0.1mm以下の顆粒と粒径0.1〜0.5mmの顆粒を調製し、前者20重量%と後者80重量%からなる酸化チタン顆粒を調製した。
前記チタン水酸化物のスラリーAを100℃で加熱、乾燥し、電気炉中にて500℃で3時間焼成し、粉砕処理して、酸化チタンDの粉砕物を得た。この酸化チタンDの粉砕物70重量部と前記酸化チタンCの粉砕物30重量部を混合し、ガス分解効率の向上を目的として、細孔容積を増加させるめに細孔付与剤として、上記酸化チタンDの粉砕物と酸化チタンCの粉砕物の合計量100重量部に対して、メラミン樹脂15重量部を加えた。
実施例3で得られた酸化チタン顆粒を水で4倍希釈した前記ゾルBに浸漬し、乾燥した後、再度、浸漬し、乾燥した後、電気炉中450℃で焼成し、前述したように篩分けして、粒径が0.1〜1.2mmの顆粒を得た。得られた顆粒は比表面積66m2/g、水銀圧入法による細孔容積0.08mL/g、タップ密度1.17g/mL、磨耗率0.4%であった。
実施例1において、アルミナの粉砕粉を((株)ダルトン製高速攪拌造粒機SPG−25型を用いて、攪拌羽根250rpm、高速チョッパ3000rpmの条件下、水で5倍希釈したアルミナゾルを噴霧しながら造粒して、アルミナ粒子を得た。このアルミナ粒子を100℃で3時間乾燥し、次いで、600℃で焼成し、目開き1.19mmと0.104mmの篩で篩分けして、粒径が0.1〜1.2mmの範囲にあるアルミナ顆粒を得た。
2…廃プラスチック片投入口
3…担体ガス
4…担体ガス管
5…熱分解触媒
6…廃プラスチック片
7…攪拌機
8…加熱装置
Claims (14)
- チタン/タングステン複合酸化物からなり、粒径が0.1〜1.2mmの範囲にあり、細孔容積が0.1〜0.3mL/gの範囲にあり、タップ密度が1.05〜1.4g/mLの範囲にあり、磨耗率が2重量%以下である球状の顆粒からなることを特徴とする有機物を熱分解するための触媒。
- チタン/タングステン複合酸化物の顆粒からなり、有機物を熱分解するための触媒であって、上記チタン/タングステン複合酸化物の顆粒がそのチタン/タングステン複合酸化物の粉砕物をチタニアゾル、シリカゾル、アルミナゾル及びジルコニアゾルから選ばれる少なくとも1種のゾルの存在下に攪拌造粒して球状の顆粒とした後、400〜850℃の範囲の温度で焼成し、篩分けすることによって得られる粒径が0.1〜1.2mmの範囲にあり、細孔容積が0.1〜0.3mL/gの範囲にあり、タップ密度が1.05〜 1.4g/mLの範囲にあり、磨耗率が2重量%以下である球状の顆粒であることを特徴とする有機物を熱分解するための触媒。
- チタン/タングステン複合酸化物の顆粒からなる触媒であって、その触媒と共に有機物を攪拌しながら加熱して、その有機物を熱分解し、ガス化するための触媒であって、上記チタン/タングステン複合酸化物の顆粒がそのチタン/タングステン複合酸化物の粉砕物をチタニアゾル、シリカゾル、アルミナゾル及びジルコニアゾルから選ばれる少なくとも1種のゾルの存在下に攪拌造粒して球状の顆粒とした後、400〜850℃の範囲の温度で焼成し、篩分けすることによって得られる粒径が0.1〜1.2mmの範囲にあり、細孔容積が0.1〜0.3mL/gの範囲にあり、タップ密度が1.05〜1.4g/mLの範囲にあり、磨耗率が2重量%以下である球状の顆粒であることを特徴とする有機物を熱分解するための触媒。
- チタン/タングステン複合酸化物の粉砕物をチタニアゾル、シリカゾル、アルミナゾル及びジルコニアゾルから選ばれる少なくとも1種のゾルの存在下に攪拌造粒して球状の顆粒とした後、この顆粒を上記チタン/タングステン複合酸化物の粉砕物を含む上記少なくとも1種のゾルの存在下に転動造粒と流動層造粒から選ばれる少なくとも1種の方法にて更に造粒した後、400〜850℃の範囲の温度で焼成し、篩分けすることによって得られる請求項2又は3に記載の有機物を熱分解するための触媒。
- 有機物が廃プラスチックである請求項1から4のいずれかに記載の有機物を熱分解するための触媒。
- 有機物が医療廃棄物に含まれる有機物である請求項1から4のいずれかに記載の有機物を熱分解するための触媒。
- チタン/タングステン複合酸化物からなり、粒径が0.1〜1.2mmの範囲にあり、細孔容積が0.1〜0.3mL/gの範囲にあり、タップ密度が1.05〜1.4g/mLの範囲にあり、磨耗率が2重量%以下である球状の顆粒からなる触媒と共に有機物を攪拌しながら加熱して、熱分解し、ガス化することを特徴とする有機物を熱分解するための方法。
- チタン/タングステン複合酸化物の顆粒からなり、上記チタン/タングステン複合酸化物の顆粒がそのチタン/タングステン複合酸化物の粉砕物をチタニアゾル、シリカゾル、アルミナゾル及びジルコニアゾルから選ばれる少なくとも1種のゾルの存在下に攪拌造粒して球状の顆粒とした後、400〜850℃の範囲の温度で焼成し、篩分けすることによって得られる粒径が0.1〜1.2mmの範囲にあり、細孔容積が0.1〜0.3mL/gの範囲にあり、タップ密度が1.05〜1.4g/mLの範囲にあり、磨耗率が2重量%以下である球状の顆粒である触媒と共に有機物を攪拌しながら加熱して、熱分解し、ガス化することを特徴とする有機物を熱分解するための方法。
- 請求項7又は8に記載の有機物を熱分解するための方法において、触媒がチタン/タングステン複合酸化物の粉砕物をチタニアゾル、シリカゾル、アルミナゾル及びジルコニアゾルから選ばれる少なくとも1種のゾルの存在下に攪拌造粒して球状の顆粒とした後、この顆粒を上記チタン/タングステン複合酸化物の粉砕物を含む上記少なくとも1種のゾルの存在下に転動造粒と流動層造粒から選ばれる少なくとも1種の方法にて更に造粒した後、400〜850℃の範囲の温度で焼成し、篩分けすることによって得られるものである有機物を熱分解するための方法。
- 有機物が廃プラスチックである請求項7から9のいずれかに記載の有機物を熱分解するための方法。
- 有機物が医療廃棄物に含まれる有機物である請求項7から9のいずれかに記載の有機物を熱分解するための方法。
- 担体ガスの流通下に有機物を触媒と共に加熱する請求項7から11のいずれかに記載の有機物を熱分解するための方法。
- チタン/タングステン複合酸化物の粉砕物をチタニアゾル、シリカゾル、アルミナゾル及びジルコニアゾルから選ばれる少なくとも1種のゾルの存在下に攪拌造粒して球状の顆粒とした後、400〜850℃の範囲の温度で焼成し、この後、篩分けによって粒径を0.1〜1.2mmの範囲とすることを特徴とする細孔容積が0.1〜0.3mL/gの範囲にあり、タップ密度が1.05〜1.4g/mLの範囲にあり、磨耗率が2重量%以下である球状の顆粒からなり、有機物を熱分解するための触媒を製造する方法。
- チタン/タングステン複合酸化物の粉砕物をチタニアゾル、シリカゾル、アルミナゾル及びジルコニアゾルから選ばれる少なくとも1種のゾルの存在下に攪拌造粒して球状の顆粒とし、次いで、この顆粒を上記チタン/タングステン複合酸化物の粉砕物を含む上記少なくとも1種のゾルの存在下に転動造粒と流動層造粒から選ばれる少なくとも1種の方法にて更に造粒した後、400〜850℃の範囲の温度で焼成し、篩分けする請求項13に記載の有機物を熱分解するための触媒を製造する方法。
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EP2324914B1 (en) | 2016-03-23 |
US20110144406A1 (en) | 2011-06-16 |
WO2010021397A1 (ja) | 2010-02-25 |
KR101670524B1 (ko) | 2016-10-28 |
CN102137717A (zh) | 2011-07-27 |
EP2324914A1 (en) | 2011-05-25 |
CN105478104A (zh) | 2016-04-13 |
EP2324914A4 (en) | 2014-06-18 |
KR20110046467A (ko) | 2011-05-04 |
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