JP2021502539A - 水素および二酸化炭素の生成および分離のためのシステムおよび方法 - Google Patents
水素および二酸化炭素の生成および分離のためのシステムおよび方法 Download PDFInfo
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Abstract
Description
CH4+1/2O2 → CO+2H2 部分酸化
CH4+2O2 → CO2+2H2O 燃焼
CH4+H2O → CO+3H2 水蒸気改質
CH4+CO2 → 2CO+2H2 乾燥改質
CO+H2O → CO2+H2 COシフト
Claims (51)
- CO2および1種以上のさらなる成分を含むプロセス流から二酸化炭素(CO2)を分離するためのプロセスであって、前記プロセスは、
前記プロセス流中のCO2の分圧が少なくとも15バールであるような圧力で前記プロセス流を提供することと、
CO2を含む前記プロセス流の露点を約−20℃以下の温度まで低下させるために前記プロセス流を十分に乾燥させることと、
CO2を含む前記プロセス流を二相流として提供するために前記プロセス流を少なくとも1つの熱交換器において冷却することと、
前記二相流の温度を前記二相流の凝固点の約15℃以内である温度まで低下させるために前記二相流を膨張させることと、
前記1種以上のさらなる成分のうちの少なくとも1種を多く含む蒸気流を提供すると共にCO2を多く含む液体流を提供するために前記二相流を分離することと、
を含む、プロセス。 - 前記乾燥させることは、CO2を含む前記プロセス流を乾燥剤充填層に通すことを含む、請求項1に記載のプロセス。
- 前記冷却することは、前記プロセス流をCO2を多く含む前記液体流の少なくとも一部と接触させて冷却することを含む、請求項1に記載のプロセス。
- 前記冷却することは、前記プロセス流を第1の熱交換器および第2の熱交換器において冷却することを含む、請求項3に記載のプロセス。
- 前記冷却することは、前記プロセス流を第1の熱交換器においてCO2を多く含む前記液体流の第1の部分と接触させて冷却し、かつ前記プロセス流を前記第2の熱交換器においてCO2を多く含む前記液体流の第2の部分と接触させて冷却することを含む、請求項4に記載のプロセス。
- 前記プロセス流を前記第1の熱交換器においてCO2を多く含む前記液体流の第1の部分と接触させて冷却し、かつ前記プロセス流を前記第2の熱交換器においてCO2を多く含む前記液体流の第2の部分と接触させて冷却する前に、CO2を多く含む前記液体流の第1の部分およびCO2を多く含む前記液体流の第2の部分の温度を低下させるために、CO2を多く含む前記液体流の第1の部分およびCO2を多く含む前記液体流の第2の部分を膨張させることをさらに含む、請求項5に記載のプロセス。
- CO2を多く含む前記液体流の第1の部分およびCO2を多く含む前記液体流の第2の部分を別個の弁を用いて別々に膨張させる、請求項6に記載のプロセス。
- 前記プロセス流をリボイラー熱交換器において冷却することをさらに含む、請求項4に記載のプロセス。
- CO2を多く含む前記液体流の少なくとも一部を前記リボイラー熱交換器に通すことをさらに含む、請求項8に記載のプロセス。
- 前記冷却することは、前記プロセス流を前記1種以上のさらなる成分のうちの少なくとも1種を多く含む前記蒸気流の少なくとも一部と接触させて冷却することを含む、請求項3に記載のプロセス。
- 前記二相流の温度を前記二相流の凝固点の約10℃以内である温度まで低下させるために前記二相流を膨張させることを含む、請求項1に記載のプロセス。
- 前記二相流を分離することは前記二相流を蒸留塔に通すことを含む、請求項1に記載のプロセス。
- 前記蒸留塔は、前記蒸留塔内への二相流の供給点の下にあるストリッピング部を備え、かつ前記蒸留塔内への二相流の供給点の上にある精留部を備える、請求項12に記載のプロセス。
- CO2を多く含む前記液体流を第1の液体CO2流、第2の液体CO2流および第3の液体CO2流に分離することを含む、請求項1に記載のプロセス。
- その温度を低下させ、かつ冷媒流を形成するために、前記第1の液体CO2流、前記第2の液体CO2流および前記第3の液体CO2流のうちの1つ、2つまたは3つを独立して膨張させることを含む、請求項14に記載のプロセス。
- 前記第1の液体CO2流、前記第2の液体CO2流および前記第3の液体CO2流のうちの1つ、2つまたは3つを圧縮することを含む、請求項14に記載のプロセス。
- 前記1種以上のさらなる成分のうちの少なくとも1種を多く含む前記蒸気流を圧縮することを含む、請求項1に記載のプロセス。
- 前記1種以上のさらなる成分は、炭化水素、一酸化炭素、水素、窒素、アルゴン、酸素および水蒸気のうちの1種以上である、請求項1に記載のプロセス。
- その温度を低下させ、かつ冷媒流を形成するために、前記1種以上のさらなる成分のうちの少なくとも1種を多く含む前記蒸気流を膨張させることを含む、請求項1に記載のプロセス。
- 前記1種以上のさらなる成分のうちの少なくとも1種を多く含む前記蒸気流の少なくとも一部を圧力スイング吸着ユニットに通すことを含む、請求項1に記載のプロセス。
- 前記通すことは、前記1種以上のさらなる成分のうちの少なくとも1種を多く含む前記蒸気流中に存在するあらゆるH2の少なくとも60モル%を回収するのに有効である、請求項20に記載のプロセス。
- 前記乾燥工程の前に前記プロセス流との組み合わせのために、前記1種以上のさらなる成分のうちの少なくとも1種を多く含む前記蒸気流の少なくとも一部を再循環させることを含む、請求項1に記載のプロセス。
- 前記プロセス流は水素生成プロセスからのH2+CO2流である、請求項1に記載のプロセス。
- 前記プロセスは外部冷媒を使用せずに行う、請求項1に記載のプロセス。
- 二酸化炭素(CO2)分離システムであって、
CO2および1種以上のさらなる成分を含むプロセス流を圧縮するように構成された圧縮機と、
前記プロセス流から水分を除去するように構成された乾燥機と、
前記プロセス流を1つ以上の冷却流と接触させて冷却し、かつ前記プロセス流を二相流として提供するように構成された少なくとも1つの熱交換器と、
前記二相流の膨張により前記二相流を冷却するように構成された少なくとも1つの膨張装置と、
前記二相流を受け取り、かつ気相流および液相流を生成するように構成された物質移動カラムと
を備える、二酸化炭素分離システム。 - 水素生成システムであって、
炭化水素供給流および酸素を受け取り、かつH2+COを含む生成ガス流を形成するように構成された反応器ユニットと、
前記H2+COを含む生成ガス流を冷却し、かつ蒸気を形成するように構成された蒸気発生ボイラーと、
前記H2+COを含む生成ガス流を受け取り、かつH2+CO2を含む流れを提供するように構成された少なくとも1つの反応器と、
前記H2+CO2を含む流れを受け取り、かつ実質的に純粋な水素から形成された生成物流を提供すると共にCO2を含む廃ガス蒸気も提供するように構成された圧力スイング吸着装置と、
CO2を含む前記廃ガス流を圧縮するように構成された圧縮機と、
CO2を含む前記廃ガス流から水分を除去するように構成された乾燥機と、
CO2を含む前記廃ガス流を1つ以上の冷却流と接触させて冷却し、かつCO2を含む前記廃ガス流を二相流として提供するように構成された少なくとも1つの熱交換器と、
前記二相流の膨張により前記二相流を冷却するように構成された少なくとも1つの膨張装置と、
前記二相流を気相流および液相流に分離するように構成された分離器と、
を備える、水素生成システム。 - 前記炭化水素供給流を前記H2+COを含む生成ガス流および前記H2+CO2を含む流れのうちの一方または両方に接触させて加熱するように構成された1つ以上の熱交換器をさらに備える、請求項26に記載の水素生成システム。
- 過剰な熱を外部プロセスに伝達するように構成された1つ以上の熱交換器をさらに備える、請求項26に記載の水素生成システム。
- 前記水素生成システムにおいて生成された廃燃料ガス流および蒸気のうちの一方または両方を排出させるように構成された1つ以上のラインをさらに備える、請求項26に記載の水素生成システム。
- ガスタービンへの燃料として実質的に純粋な水素から形成された生成物流の少なくとも一部を送出するように構成された1つ以上のラインをさらに備える、請求項26に記載の水素生成システム。
- 前記反応器ユニットは蒸気+炭化水素+任意にCO2接触改質装置を備える、請求項26に記載の水素生成システム。
- 前記反応器ユニットは部分酸化ユニットを備える、請求項26に記載の水素生成システム。
- 前記反応器ユニットは触媒自己熱改質装置を備える、請求項26に記載の水素生成システム。
- 前記反応器ユニットは自己熱改質装置または部分酸化反応器のいずれかである第1段ユニットを備え、かつ第2段ガス加熱蒸気+炭化水素接触改質装置を備える、請求項26に記載の水素生成システム。
- 前記反応器ユニットから生成されるH2+CO流の少なくとも一部は、ITM部分酸化反応器において低圧の予熱された供給空気流を用いて生成される、請求項26に記載の水素生成システム。
- 外部熱源からの熱を少なくとも前記炭化水素供給流に伝達するように構成された過熱器(熱交換器)をさらに備える、請求項26に記載の水素生成システム。
- 前記反応器ユニットは部分酸化ゾーンおよびガス加熱改質装置からなる圧力容器と組み合わせられている、請求項26に記載の水素生成システム。
- 前記部分酸化ゾーンは前記複合圧力容器の底部にあり、かつ前記ガス加熱改質装置は前記複合圧力容器の中間ゾーンにある開放端を有するチューブと前記複合圧力容器の上部にある廃熱ボイラー熱交換器とを備える、請求項37に記載の水素生成システム。
- 水素生成のためのプロセスであって、前記プロセスは、
反応器ユニット内への炭化水素供給流と酸素とを反応させてH2+COを含む生成ガス流を形成することと、
前記H2+COを含む生成ガス流を蒸気発生ボイラーに通して前記H2+COを含む生成ガス流に蒸気を添加することと、
少なくとも1つの反応器において前記H2+COを含む生成ガス流を変換させてH2+CO2を含む流れを形成することと、
圧力スイング吸着装置において前記H2+CO2を含む流れを処理して実質的に純粋な水素から形成された生成物流を提供すると共にCO2を含む廃ガス蒸気も提供することと、
CO2を含む廃ガス流中のCO2の少なくとも50モル%が液体CO2生成物流の中に分離されるように、CO2を含む前記廃ガス流をそこに通すことによって自動冷凍により動作する深冷分離ユニットにおいて前記液体CO2生成物流を形成することと、
前記深冷分離ユニットからの気相流を再循環させることと、
を含む、プロセス。 - 前記自動冷凍により動作する深冷分離ユニットは外部冷媒を使用せずに動作する、請求項39に記載のプロセス。
- 前記深冷分離ユニットは、
CO2を含む前記廃ガス流から水分を除去するように構成された乾燥機と、
CO2を含む前記廃ガス流を1つ以上の冷却流と接触させて冷却し、かつCO2を含む前記廃ガス流を二相流として提供するように構成された少なくとも1つの熱交換器と、
前記二相流の膨張により前記二相流を冷却するように構成された少なくとも1つの膨張装置と、
を備える、請求項39に記載のプロセス。 - 前記深冷分離ユニットは、
前記乾燥機の上流に位置するCO2を含む前記廃ガス流を圧縮するように構成された圧縮機と、
前記二相流を前記気相流および前記液体CO2生成物流に分離するように構成された分離器と、
をさらに備える、請求項41に記載のプロセス。 - 前記圧力スイング吸着装置において前記H2+CO2を含む流れを処理する前に前記H2+CO2を含む流れからCO2を除去することを含む、請求項39に記載のプロセス。
- 前記H2+CO2を含む流れからCO2を除去することは、前記H2+CO2を含む流れから前記除去するCO2を化学もしくは物理溶媒を利用するCO2除去ユニットに通すことを含む、請求項43に記載のプロセス。
- 前記圧力スイング吸着装置から出るCO2を含む廃ガス蒸気の一部を圧縮し、かつ前記反応器ユニットに再循環させて戻す、請求項39に記載のプロセス。
- 前記深冷分離ユニットからの気相流の少なくとも一部を前記反応器ユニットに再循環させて戻す、請求項39に記載のプロセス。
- 前記深冷分離ユニットからの気相流を第2の圧力スイング吸着により処理して、前記深冷分離ユニットからの気相流の再循環前に前記気相流中に存在するあらゆるH2の少なくとも一部を除去する、請求項39に記載のプロセス。
- 前記圧力スイング吸着装置の入口におけるH2+CO2を含む流れの中のアルゴンおよび窒素の総濃度が約3モル%〜約12モル%の範囲になるように、前記H2+CO2を含む流れの前記圧力スイング吸着装置内への進入前に、前記H2+COを含む生成ガス流および前記H2+CO2を含む流れのうちの一方または両方の中に存在するあらゆるアルゴンおよび窒素の少なくとも一部を除去することを含む、請求項39に記載のプロセス。
- CO2を含む前記廃ガス流中のCO2の少なくとも80モル%を前記液体CO2生成物流の中に分離する、請求項39に記載のプロセス。
- 前記深冷分離ユニットにおいて前記液体CO2生成物流を形成することは、
前記プロセス流中のCO2の分圧が少なくとも15バールであるような圧力でCO2を含む前記廃ガス流を提供することと、
CO2を含む前記廃ガス流の露点を約−20℃以下の温度まで低下させるためにCO2を含む前記廃ガス流を十分に乾燥させることと、
CO2を含む前記廃ガス流を二相流として提供するためにCO2を含む前記廃ガス流を少なくとも1つの熱交換器において冷却することと、
前記二相流の温度を前記二相流の凝固点の約15℃以内である温度まで低下させるために前記二相流を膨張させることと、
前記気相流を提供すると共に前記液体CO2生成物流を提供するために前記二相流を分離することと、
を含む、請求項39に記載のプロセス。 - 前記深冷分離ユニットからの気相流をエコノマイザー熱交換器を備えた触媒COシフトユニットに通し、前記気相はそこに添加された蒸気を有し、次いでそれを触媒反応器に通して、前記蒸気との反応によって前記含有されているCOの少なくとも一部を変換させてH2+CO2を含むさらなる流れを形成すると共に少なくとも60モル%のH2を含有するガス流を形成する、請求項39に記載のプロセス。
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US20190135626A1 (en) | 2019-05-09 |
CN111526935A (zh) | 2020-08-11 |
JP7297775B2 (ja) | 2023-06-26 |
CA3082075A1 (en) | 2019-05-16 |
AU2018364702A1 (en) | 2020-06-04 |
CN114538376A (zh) | 2022-05-27 |
EP3706883A2 (en) | 2020-09-16 |
US20210323818A1 (en) | 2021-10-21 |
CN114538376B (zh) | 2024-07-30 |
AU2018364702B2 (en) | 2024-01-11 |
WO2019092654A3 (en) | 2019-07-18 |
KR102651575B1 (ko) | 2024-03-27 |
KR20200078624A (ko) | 2020-07-01 |
WO2019092654A2 (en) | 2019-05-16 |
US12054388B2 (en) | 2024-08-06 |
US11066298B2 (en) | 2021-07-20 |
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