JP2021515873A - 二酸化炭素作動流体を用いた電力生成のためのシステムおよび方法 - Google Patents
二酸化炭素作動流体を用いた電力生成のためのシステムおよび方法 Download PDFInfo
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Abstract
Description
少なくとも0.5kg/リットルの密度で後部冷却器から離れる合計CO2リサイクル圧縮機放出流は2つの部分に分割され、
第1の部分は、多段ポンプにおいてタービン入口システム圧に圧縮され、復熱装置熱交換器において加熱され、
多段ポンプにおいてバイパス圧縮機入口圧に圧縮された第2の部分は、復熱装置熱交換器の第3のセクションへ流入する前にリサイクルCO2圧縮機によって生じた圧縮熱に接して熱交換器において加熱され、
酸素流は、復熱装置熱交換器のセクション3へ流入する酸化剤流を形成するためにバイパスCO2流と混合され、
復熱装置熱交換器のセクション3へ流入する酸化剤流の温度は、復熱装置熱交換器の低温端部温度差を最小限にするように調整され、
酸化剤流は、10%と20%との間のO2モル濃度を有し、
酸化剤流は、冷却タービン放出流と加熱流との間の温度差が約2℃乃至約20℃である、セクション2と3との間で復熱装置熱交換器から離れ、
酸化剤流は、断熱圧縮され、冷却タービン放出流と加熱流との間の温度差が約2℃乃至約20℃であるセクション2と3との間で復熱装置熱交換器へ再流入する
という条件のうちの1つ以上が当てはまる。
Claims (14)
- 電力生成の方法であって、
燃焼流を形成するために、燃焼器において約100バール乃至約500バールの圧力のリサイクルCO2流の存在下で燃料を酸化剤流と燃焼させることと、
電力を生成しタービン排気流を形成するために、タービンにおいて前記燃焼流をより低い圧力に膨張させることと、
異なる温度範囲で動作する複数のセクションを有する熱交換器において、前記タービン排気流を冷却することと、
実質的に純粋なCO2流を形成するために、前記タービン排気を精製することと、
前記実質的に純粋なCO2流を第1の部分および第2の部分に分離することと、
前記実質的に純粋なCO2流の第1の部分および第2の部分を増加された圧力までポンプすることと、
前記実質的に純粋なCO2流の第1の部分および第2の部分の温度を上昇させるために、それらを前記熱交換器に個別に通過させることと、
前記実質的に純粋なCO2流の第1の部分を前記リサイクルCO2流として前記燃焼器へ受け渡すことと、
前記実質的に純粋なCO2流の第2の部分を前記燃焼器へ受け渡すことと、
を備える、方法であり、
前記実質的に純粋なCO2流の第2の部分は、
前記熱交換器の複数のセクションのうちの少なくとも1つのセクションより上流で、前記実質的に純粋なCO2流の第2の部分を引き出すこと、
前記実質的に純粋なCO2流の第2の部分の圧力および温度を上昇させることにより前記実質的に純粋なCO2流のバイパス部分を形成するために、圧縮機において前記実質的に純粋なCO2流の第2の部分を処理すること、および
前記熱交換器の複数のセクションのうちの少なくとも1つのセクションより下流で、前記実質的に純粋なCO2流のバイパス部分を前記熱交換器へ流入させること
によって、前記熱交換器の前記複数のセクションのうちの少なくとも1つのセクションをバイパスする、方法。 - 前記実質的に純粋なCO2流は、前記第1の部分および前記第2の部分に分離する前に、多段圧縮機を通して処理される、請求項1に記載の方法。
- 前記熱交換器は、各々が連続的に低くなる温度範囲で動作する第1のセクション、第2のセクション、および第3のセクションを少なくとも備える、請求項1または請求項2に記載の方法。
- 前記実質的に純粋なCO2流の第2の部分は、前記熱交換器の第2のセクションをバイパスし、前記熱交換器の第1のセクションおよび第3のセクションにおいて加熱される、請求項3に記載の方法。
- 前記実質的に純粋なCO2流のバイパス部分は、前記熱交換器の複数のセクションのうちの少なくとも1つのセクションより下流で、前記実質的に純粋なCO2流の第1の部分と混合されることによって、前記熱交換器へ流入する、請求項1乃至4のいずれか1項に記載の方法。
- 前記実質的に純粋なCO2流の第1の部分は、前記実質的に純粋なCO2流の第3の部分を形成するために分割され、前記実質的に純粋なCO2流の第3の部分は、前記酸化剤流を形成するために酸素流と混合される、請求項1乃至4のいずれか1項に記載の方法。
- 前記実質的に純粋なCO2流の第2の部分は、前記実質的に純粋なCO2流のバイパス部分が前記酸化剤流として前記熱交換器から流出するように、前記実質的に純粋なCO2流の第2の部分が前記熱交換器の複数のセクションのうちの少なくとも1つのセクションをバイパスする前に酸素流と混合される、請求項1乃至4のいずれか1項に記載の方法。
- 前記実質的に純粋なCO2流の第2の部分が前記酸素流と混合した後かつ前記実質的に純粋なCO2流の第2の部分が前記熱交換器を通過する前、前記混合された酸素流を含む前記実質的に純粋なCO2流の第2の部分は、熱交換器において加熱される、請求項7に記載の方法。
- 前記燃焼流は、約700℃乃至約1,600℃の温度であり、
前記タービン排気流は、約1バール乃至約50バールの圧力であり、
前記精製することは、前記タービン排気流から水を分離することを備え、
前記ポンプすることの前に、前記実質的に純粋なCO2流は、多段圧縮機において約65バール乃至約90バールの圧力に圧縮され、
前記実質的に純粋なCO2流の第1の部分は、約100バール乃至約500バールの圧力にポンプされ、
前記実質的に純粋なCO2流の第2の部分は、約80バール乃至約140バールの圧力にポンプされ、
前記圧縮機において前記実質的に純粋なCO2流の第2の部分を処理することは、前記圧力を約200バール乃至約500バールに上昇させることを備える
という条件のうちの1つ以上が満たされる、請求項1乃至8のいずれか1項に記載の方法。 - 前記熱交換器の複数のセクションのうちの少なくとも1つのセクションをバイパスする前記実質的に純粋なCO2流の第2の部分の量は、約2℃乃至約20℃である、前記熱交換器の少なくとも1つのセクションにおける正の最小温度差をもたらすために十分である、請求項1乃至9のいずれか1項に記載の方法。
- 前記熱交換器の複数のセクションのうちの少なくとも1つのセクションより上流にある前記実質的に純粋なCO2流の第2の部分および前記熱交換器の複数のセクションのうちの少なくとも1つのセクションより下流で前記熱交換器へ流入する前記実質的に純粋なCO2流のバイパス部分は、約2℃乃至約20℃である、前記熱交換器の少なくとも1つのセクションにおける正の最小温度差を提供するように構成されたそれぞれの温度を有する、請求項1乃至9のいずれか1項に記載の方法。
- 前記実質的に純粋なCO2流の第2の部分を処理する圧縮機は、約65バール乃至約260バールの入口圧を有する、請求項1乃至9のいずれか1項に記載の方法。
- 前記酸化剤流を形成するために、空気分離プラントからの酸素流を、前記実質的に純粋なCO2流の第1の部分および前記第2の部分の1つと混合することを更に備える、請求項1に記載の方法。
- 電力生成システムであって、
複数の流れを受け入れるように構成され、出口を有する燃焼器と、
前記燃焼器の出口と流体接続している入口を有し、出口を有するタービンと、
電力の生成のために構成され、前記タービンと発電接続している発電機と、
第1のセクション、第2のセクション、および最後のセクションを備える熱交換器であって、各セクションが複数の複数の入口および出口を有し、各セクションが異なる温度範囲での動作のために構成され、前記第1のセクションが、前記タービンと流体接続している入口および出口を有する、熱交換器と、
前記熱交換器の最後のセクションからの出口と流体接続しており、実質的に純粋なCO2流の出力のための出口を有する分離器と、
前記実質的に純粋なCO2流を第1の部分および第2の部分に分割するために構成された分割器と、
前記実質的に純粋なCO2流の第1の部分を受け入れ、その圧力を上昇させるように構成された第1のポンプであって、前記第1のポンプが、前記熱交換器の最後のセクションの第1の入口と流体接続している出口を有する、第1のポンプと、
前記実質的に純粋なCO2流の第2の部分を受け入れ、その圧力を上昇させるように構成された第2のポンプであって、前記第2のポンプが、前記熱交換器の最後のセクションの第2の入口と流体接続している出口を有する、第2のポンプと、
前記実質的に純粋なCO2流の第2の部分が前記熱交換器の第2のセクションをバイパスするように構成されるように、前記熱交換器の最後のセクションの出口と流体接続する入口であって、前記入口が、前記実質的に純粋なCO2流の第2の部分を受け入れるように構成される、入口と、前記熱交換器の第1のセクションにおける入口と流体接続している出口とを有するバイパス圧縮機と、
を備える、システム。
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US11686258B2 (en) | 2014-11-12 | 2023-06-27 | 8 Rivers Capital, Llc | Control systems and methods suitable for use with power production systems and methods |
US10961920B2 (en) | 2018-10-02 | 2021-03-30 | 8 Rivers Capital, Llc | Control systems and methods suitable for use with power production systems and methods |
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EP3759322B9 (en) | 2024-02-14 |
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US10914232B2 (en) | 2021-02-09 |
JP2023113778A (ja) | 2023-08-16 |
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WO2019167021A1 (en) | 2019-09-06 |
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