JP7456001B2 - 船舶の温室効果ガス排出低減装置及びそれを具備した船舶 - Google Patents
船舶の温室効果ガス排出低減装置及びそれを具備した船舶 Download PDFInfo
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- JP7456001B2 JP7456001B2 JP2022565847A JP2022565847A JP7456001B2 JP 7456001 B2 JP7456001 B2 JP 7456001B2 JP 2022565847 A JP2022565847 A JP 2022565847A JP 2022565847 A JP2022565847 A JP 2022565847A JP 7456001 B2 JP7456001 B2 JP 7456001B2
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- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
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- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
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- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
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Description
111a,b 海水ポンプ
112 調節弁
120 アンモニア水製造部
121 清水タンク
122 清水ポンプ
123 アンモニア水製造タワー
124 アンモニア水ポンプ
125 ブロア
126 圧力計弁
130 吸収タワー
131 NOX吸収部
132 SOX吸収部
133 CO2除去部
134 EGE
140 アンモニア再生部
141 Ca(OH)2又はMg(OH)2貯蔵タンク
142 撹拌機
143 混合タンク
144 フィルタ
145 高圧ポンプ
150 蒸気生成部
151 補助ボイラ
152 ボイラ水循環水ポンプ
153 カスケードタンク
154 供給ポンプ
155 調節弁
160 排出部
161 洗浄水タンク
162 移送ポンプ
163 水処理装置
164 スラッジ貯蔵タンク
10 船舶エンジン
Claims (26)
- 海水を供給する海水供給部と、
清水とNH3を反応させてアンモニア水を製造して供給するアンモニア水製造部と、
船舶エンジンから排出される排気ガスを前記海水供給部から供給された海水と反応させて冷却し、前記冷却された排気ガスと前記アンモニア水製造部からのアンモニア水を反応させてCO2をNH4HCO3(aq)に転換してCO2を除去するCO2除去部が形成された、吸収タワーと、
前記吸収タワーから排出されたNH4HCO3(aq)をCa(OH)2又はMg(OH)2と反応させてNH3を再生して前記アンモニア水製造部に回帰させて供給する、アンモニア再生部と、を含み、
前記アンモニア水製造部は、
清水を貯蔵する清水タンク;
前記清水タンクから清水をポンピングして供給する清水ポンプ;
タワータンクと、前記タワータンク下段に形成されてNH 3 を上向きに噴射するNH 3 噴射ノズルと、前記タワータンク上段に形成されて前記清水ポンプからの清水を下向きに噴射する清水噴射ノズルと、前記NH 3 噴射ノズルと前記清水噴射ノズルの間に形成されて清水とNH 3 を接触させてNH 3 を溶解してアンモニア水を生成する第1充填材と、溶解反応による前記タワータンクの発熱を冷却するクーリングジャケットと、で構成されるアンモニア水製造タワー;及び、
前記アンモニア水製造タワーの下段に排液されたアンモニア水を貯蔵するアンモニア水貯蔵タンクから前記CO 2 除去部の上段にアンモニア水を供給するアンモニア水ポンプ;を含む
ことを特徴とする船舶の温室効果ガス排出低減装置。 - 前記吸収タワーは、前記船舶エンジンから排出される排気ガスのNOXを吸収して除去するNOX吸収部をさらに含み、
前記CO2除去部は、前記NOXが除去された排気ガスを前記海水供給部から供給された海水と反応させて冷却し、前記冷却された排気ガスと前記アンモニア水製造部からのアンモニア水を反応させてCO2をNH4HCO3(aq)に転換してCO2を除去し、
前記アンモニア再生部はNH3を再生して前記アンモニア水製造部及び前記NOX吸収部に回帰させて供給する
請求項1に記載の船舶の温室効果ガス排出低減装置。 - 前記吸収タワーは、前記船舶エンジンから排出される排気ガスを前記海水供給部から供給された海水と反応させて冷却しながらSOXを溶解させて除去するSOX吸収部をさらに含み、
前記CO2除去部は、前記SOXが除去された排気ガスと前記アンモニア水製造部からのアンモニア水を反応させてCO2をNH4HCO3(aq)に転換してCO2を除去する
請求項1に記載の船舶の温室効果ガス排出低減装置。 - 前記吸収タワーは、前記船舶エンジンから排出される排気ガスのNOXを吸収して除去するNOX吸収部と、前記NOXが除去された排気ガスを前記海水供給部から供給された海水と反応させて冷却しながらSOXを溶解させて除去するSOX吸収部と、前記SOXが除去された排気ガスと前記アンモニア水製造部からのアンモニア水を反応させてCO2をNH4HCO3(aq)に転換してCO2を除去する前記CO2除去部と、が積層形成され、
前記アンモニア再生部はNH3を再生して前記アンモニア水製造部及び前記NOX吸収部に回帰させて供給する
請求項1に記載の船舶の温室効果ガス排出低減装置。 - 前記海水供給部は、
船外からシーチェストを介して海水を供給されて前記SOX吸収部にポンピングする海水ポンプと、
排気ガスの量に応じて前記海水ポンプから供給される海水の流量を調節する調節弁と、を含むことを特徴とする
請求項3または4に記載の船舶の温室効果ガス排出低減装置。 - 前記アンモニア水製造タワーは、
前記タワータンクの上部に屈曲する多板形で形成されて清水から飛散されるミストを前記第1充填材方向に回帰させるミスト除去板をさらに含む
請求項1に記載の船舶の温室効果ガス排出低減装置。 - 前記アンモニア水製造タワーの上段から排気されるNH3を前記CO2除去部の下段に供給するNH3供給パイプをさらに含む
請求項1に記載の船舶の温室効果ガス排出低減装置。 - 前記第1充填材は、
単位体積あたり接触面的が大きく設計された、蒸留カラムパッキングが多段で構成される
請求項1に記載の船舶の温室効果ガス排出低減装置。 - 多段で構成された前記蒸留カラムパッキングの間に溶液再分配器がさらに形成される
請求項8に記載の船舶の温室効果ガス排出低減装置。 - 前記タワータンクの直径及び高さは、
清水の流速及びNH3の流速がフラッディング速度の1/2になるように設計される
請求項1に記載の船舶の温室効果ガス排出低減装置。 - 前記アンモニア再生部からNH3を前記アンモニア水製造部のNH3噴射ノズルを通して供給するか、又はNH3の損失及び不足時には別途のNH3貯蔵タンクからNH3を供給して損失及び不足分を補償させる
請求項1に記載の船舶の温室効果ガス排出低減装置。 - 前記NOX吸収部は、
前記アンモニア再生部からブロア又は圧縮機を通してNH3を直接供給されて第1NH3噴射ノズルに噴射するか、又はNH3の不足時には尿素水貯蔵タンクの尿素水を尿素水供給ポンプを通して供給されて第2NH3噴射ノズルに噴射してNH3の不足分を補償させる
請求項2または4に記載の船舶の温室効果ガス排出低減装置。 - 前記SOX吸収部は、
前記調節弁と連結されて海水を下向きに噴射する多段の海水噴射ノズルを含む
請求項5に記載の船舶の温室効果ガス排出低減装置。 - 前記海水噴射ノズル下部に、排気ガスが通過する流路が形成された多孔性上板が多段でそれぞれ形成されて、海水と排気ガスを接触させる
請求項13に記載の船舶の温室効果ガス排出低減装置。 - 前記海水噴射ノズル下部に、海水と排気ガスを接触させる第3充填材が詰められた吸収塔がそれぞれ形成されて、海水がSOXを溶解させるようにする
請求項14に記載の船舶の温室効果ガス排出低減装置。 - 前記SOX吸収部は、
洗浄水が逆流しないように排気ガス流入管をカバーする傘形状の隔壁を含む
請求項13に記載の船舶の温室効果ガス排出低減装置。 - 前記CO2除去部は、
前記アンモニア水ポンプと連結されてアンモニア水を下向きに噴射するアンモニア水噴射ノズルと、
CO2とアンモニア水を接触させてCO2をNH4HCO3(aq)に転換させる第2充填材と、
前記第2充填材が詰められた吸収塔の区間ごとに多段で形成されてCO2除去反応による発熱を冷却するクーリングジャケットと、
CO2と反応せず外部に排出されるNH3を捕集するウォータースプレーと、
屈曲する多板形で形成されてアンモニア水を前記第2充填材方向に回帰させるミスト除去板と、
アンモニア水が逆流しないように形成された隔壁と、
前記隔壁の排気ガス流入孔をカバーする傘形状の遮断板と、を含む
請求項1に記載の船舶の温室効果ガス排出低減装置。 - 前記吸収タワーは、
前記NOX吸収部と前記SOX吸収部の間に形成されて前記船舶エンジンの廃熱とボイラ水を熱交換させるEGEをさらに含む
請求項4に記載の船舶の温室効果ガス排出低減装置。 - 熱交換された蒸気と飽和水形態の混合水を供給されて蒸気を分離して蒸気消耗先に供給する補助ボイラと、前記補助ボイラから前記EGEにボイラ水を循環供給するボイラ水循環水ポンプと、前記蒸気消耗先から凝縮された凝縮水を回収するカスケードタンクと、前記カスケードタンクから前記補助ボイラにボイラ水の量を調節して供給する供給ポンプ及び調節弁と、を含む、蒸気生成部をさらに含む
請求項18に記載の船舶の温室効果ガス排出低減装置。 - 前記アンモニア再生部は、
Ca(OH)2を貯蔵するCa(OH)2貯蔵タンクと、
前記吸収タワーから排出されたNH4HCO3(aq)とCa(OH)2を攪拌機によって攪拌してCaCO3(s)とH2Oを生成しNH3(g)を再生する混合タンクと、
前記混合タンクから溶液及び沈殿物を吸入してCaCO3(s)を分離するフィルタと、
前記溶液及び沈殿物を前記フィルタに高圧で移送する高圧ポンプと、
スラリー又は固体状態のCaCO3(s)を貯蔵するCaCO3(s)貯蔵タンクと、を含む
請求項1に記載の船舶の温室効果ガス排出低減装置。 - 前記アンモニア再生部は、
Mg(OH)2を貯蔵するMg(OH)2貯蔵タンクと、
前記吸収タワーから排出されたNH4HCO3(aq)とMg(OH)2を攪拌機によって攪拌してMgCO3(s)とH2Oを生成しNH3(g)を再生する混合タンクと、
前記混合タンクから溶液及び沈殿物を吸入してMgCO3(s)を分離するフィルタと、
前記溶液及び沈殿物を前記フィルタに高圧で移送する高圧ポンプと、
スラリー又は固体状態のMgCO3(s)を貯蔵するMgCO3(s)貯蔵タンクと、を含む
請求項1に記載の船舶の温室効果ガス排出低減装置。 - 前記フィルタによって分離されたアンモニア水若しくは清水を前記アンモニア水製造部に供給するか、又は総循環清水に対して前記混合タンクによって追加的に生成された余剰のアンモニア水又は余剰の清水を前記清水タンクに貯蔵する
請求項20または21に記載の船舶の温室効果ガス排出低減装置。 - 前記Ca(OH)2貯蔵タンクで、前記清水タンクから供給される清水とCaOを反応させてCa(OH)2を生成する
請求項22に記載の船舶の温室効果ガス排出低減装置。 - 前記Mg(OH)2貯蔵タンクで、前記清水タンクから供給される清水とMgOを反応させてMg(OH)2を生成する
請求項22に記載の船舶の温室効果ガス排出低減装置。 - 前記吸収タワーから排出される洗浄水を貯蔵する洗浄水タンク、前記洗浄水タンクに移送ポンプによって移送された洗浄水の船外排出条件を充足するように濁度を調節するフィルタリングユニットとpH調節のための中和剤注入ユニットを具備する水処理装置、及び固形の排出物を分離貯蔵するスラッジ貯蔵タンクで構成される、排出部をさらに含む
請求項1ないし4のいずれかに記載の船舶の温室効果ガス排出低減装置。 - 請求項1ないし4のいずれかに記載の船舶の温室効果ガス排出低減装置を具備した
ことを特徴とする船舶。
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| US20230184152A1 (en) | 2023-06-15 |
| CN115485465B (zh) | 2025-12-02 |
| WO2021261691A1 (ko) | 2021-12-30 |
| EP4174293A1 (en) | 2023-05-03 |
| EP4174293A4 (en) | 2024-11-27 |
| CN115485465A (zh) | 2022-12-16 |
| US12123336B2 (en) | 2024-10-22 |
| JP2023523446A (ja) | 2023-06-05 |
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