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日本海事新聞ニュース Japan Maritime Daily Jan 28, 2026 (Wed)

Interview: Mitsubishi Shipbuilding Sees OCCS as Universal Tool for Decarbonizing All Marine Fuels

Mitsubishi Shipbuilding
　Expectations are growing for Onboard Carbon Capture and Storage Systems (OCCS) to decarbonize shipp ・・・ %E3%80%80Expectations+are+growing+for+Onboard+Carbon+Capture+and+Storage+Systems+%28%3Cb%3EOCCS%3C%2Fb%3E%29+to+decarbonize+shipping.+We+spoke+to+Hiromasa+Kano%2C+Group+Manager+of+the+Development+Group%2C+Environmental+Technology+Department%2C+Mitsubishi+Shipbuilding+%26+Marine+Engineering+Center%2C+about+the+role+%3Cb%3EOCCS%3C%2Fb%3E+plays+in+achieving+net+zero+emissions+in+shipping+and+the+challenges+in+putting+it+into+practical+use.+%3Cbr%3E%28Interviewer%3A+Satoshi+Yamada%29+%3Cbr%3E+%3Cbr%3E%E3%80%80--What+role+do+you+see+%3Cb%3EOCCS%3C%2Fb%3E+playing+in+decarbonizing+shipping%3F+%3Cbr%3E%E3%80%80%E2%80%9CTo+achieve+net-zero+GHG+%28greenhouse+gas%29+emissions+in+shipping%2C+it+is+necessary+to+use+green+fuels+that+emit+almost+no+CO2%2C+from+fuel+production+to+use.+However%2C+it+is+unclear+whether+there+will+be+a+stable+supply+of+green+fuel.+The+price+will+also+be+expensive.+There+are+some+areas+where+we+have+no+choice+but+to+rely+on+the+fuel+supply+side.+As+a+result%2C+options+other+than+fuel+conversion+are+becoming+increasingly+important.+%3Cb%3EOCCS%3C%2Fb%3E+is+one+of+the+decarbonization+measures+that+the+maritime+industry+can+take+the+lead+in.%E2%80%9C+%3Cbr%3E%E3%80%80%E2%80%9C%3Cb%3EOCCS%3C%2Fb%3E+can+be+applied+to+all+fuels+that+emit+CO2.+It+is+also+effective+for+ships+equipped+with+conventional+heavy+oil-fueled+engines.+There+is+also+flexibility+to+adjust+the+CO2+capture+rate+taking+into+account+regulations%2C+etc.+Hydrocarbon+fuels+such+as+heavy+oil+have+the+drawback+of+emitting+CO2%2C+but+they+have+the+advantage+of+being+compact+in+volume+and+having+a+large+calorific+value.+%3Cb%3EOCCS%3C%2Fb%3E+has+the+potential+to+take+advantage+of+the+characteristics+of+hydrocarbon+fuels.%E2%80%9C+%3Cbr%3E%E3%80%80%E2%80%9CIn+the+long+term%2C+it+is+conceivable+that+the+CO2+captured+by+%3Cb%3EOCCS%3C%2Fb%3E+could+be+reused+as+a+feedstock+for+synthetic+fuels.+The+captured%2C+highly+pure+CO2+is+synthesized+with+hydrogen+derived+from+renewable+energy+to+create+synthetic+fuel.+It+is+then+reused+as+marine+fuel.+It+has+the+potential+to+become+one+of+the+elements+that+will+create+such+a+cycle.%E2%80%9C+%3Cbr%3E%E3%80%80--How+are+the+CO2+reduction+effects+of+%3Cb%3EOCCS%3C%2Fb%3E+treated+under+international+rules%3F+%3Cbr%3E%E3%80%80%E2%80%9CThe+%E2%80%99IMO+%28International+Maritime+Organization%29+Net+Zero+Framework%2C%E2%80%99+a+mid-term+measure+aimed+at+achieving+net+zero+for+international+shipping%2C+also+recognizes+emission+reductions+through+%3Cb%3EOCCS%3C%2Fb%3E.+However%2C+the+CO2+emitted+from+the+energy+used+for+capture+and+storage+must+be+deducted+from+the+reduction+amount%2C+and+the+reduction+is+limited+to+cases+where+the+captured+CO2+is+stored+underground.+Discussions+are+underway+regarding+who+will+evaluate+CO2+reductions+and+how+they+will+be+certified%2C+with+an+official+decision+expected+to+be+made+by+the+end+of+2028.+In+anticipation+of+the+creation+of+such+a+framework%2C+manufacturers+in+Europe%2C+South+Korea%2C+China+and+elsewhere+are+rushing+to+commercialize+the+product.%E2%80%9C+%3Cbr%3E+%3Cbr%3E%E3%80%80%E2%96%A0+Applications+of+technology+for+onshore+facilities+%3Cbr%3E%E3%80%80--Mitsubishi+Heavy+Industries+has+established+technology+to+capture+CO2+from+exhaust+gas+for+onshore+facilities.+Will+this+technology+be+applied+to+%3Cb%3EOCCS%3C%2Fb%3E+as+well%3F+%3Cbr%3E%E3%80%80%E2%80%9CWe+believe+that+the+chemical+absorption+method+using+amine+absorbents%2C+which+has+been+used+at+onshore+facilities+and+has+proven+results%2C+is+the+most+mature+basic+technology.+After+cooling+the+exhaust+gas%2C+it+is+passed+through+a+surface+onto+which+amine+absorbing+liquid+is+applied%2C+causing+the+amine+to+combine+with+CO2.+The+amine+liquid+that+has+been+combined+with+CO2+is+then+heated+to+extract+the+CO2.+The+captured+CO2+will+be+cooled+and+liquefied+under+pressure+and+stored+on+board.%E2%80%9C+%3Cbr%3E%E3%80%80%E2%80%9CThe+difference+between+technology+for+onshore+facilities+and+one+for+ships+is+that+the+exhaust+gases+emitted+by+marine+engines+contain+many+impurities.+Before+the+exhaust+gas+is+passed+through+the+CO2+capture+device%2C+a+certain+amount+of+impurities+must+be+removed+using+a+purification+device.+This+is+one+of+the+technical+points.%E2%80%9C+%3Cbr%3E+%3Cbr%3E%E3%80%80%E2%96%A0+World%E2%80%99s+first+CO2+capture+from+a+ship+%3Cbr%3E%E3%80%80--Please+tell+us+about+your+efforts+to+commercialize+%3Cb%3EOCCS%3C%2Fb%3E.+%3Cbr%3E%E3%80%80%E2%80%9CIn+collaboration+with+%E2%80%9CK%E2%80%9DLine+and+ClassNK+%28NK%29%2C+we+installed+a+small-scale+CO2+capture+demonstration+plant+on+a+coal+carrier+and+conducted+a+demonstration+test+on+an+actual+voyage+from+2021+to+2022.+This+is+the+world%E2%80%99s+first+successful+separation+and+capture+of+CO2+from+ship+exhaust+gas%2C+and+we+have+confirmed+that+the+amount+of+CO2+captured%2C+the+capture+rate%2C+and+the+purity+of+the+captured+CO2+all+showed+the+results+as+planned.%E2%80%9C+%3Cbr%3E%E3%80%80%E2%80%9CWe+are+currently+considering+scaling+up+the+CO2+capture+unit.+The+capturing+capacity+of+the+demonstration+plant+in+the+demonstration+test+was+100+kilograms+per+day.+However%2C+for+example%2C+a+VLCC+%28Very+Large+Crude+Carrier%29%2C+which+consumes+a+lot+of+fuel%2C+would+require+a+processing+capacity+of+about+200+tons+per+day.+The+challenge+is+how+to+efficiently+increase+the+amount+of+capture+within+the+limited+space+on+board+the+ship.%E2%80%9C+%3Cbr%3E%E3%80%80%E2%80%9CWe+are+beginning+to+know+the+CO2+specifications+required+for+underground+storage.+The+specifications+required+for+CCS+projects+that+began+operation+in+Northern+Europe+in+2025+could+serve+as+one+indicator.+The+new+challenge+is+to+match+the+composition+of+the+CO2+captured+on+board+to+that+specification.%E2%80%9C+%3Cbr%3E%E3%80%80--In+April+2025%2C+the+%3Cb%3EOCCS%3C%2Fb%3E+received+Approval+in+Principle+%28AiP%29+from+NK.+%3Cbr%3E%E3%80%80%E2%80%9CThe+aforementioned+demonstration+test+did+not+include+the+liquefaction+and+storage+of+captured+CO2.+This+time%2C+we+have+constructed+a+system+that+can+be+installed+on+large+ships%2C+combining+technologies+such+as+exhaust+gas+pre-treatment%2C+CO2+capture%2C+liquefaction%2C+storage%2C+and+handling%2C+and+have+obtained+AiP.+We+will+accelerate+our+efforts+to+commercialize+the+product.%E2%80%9C+%3Cbr%3E%E3%80%80%E2%80%9CUnder+the+IMO+rules%2C+simply+capturing+CO2+using+%3Cb%3EOCCS%3C%2Fb%3E+does+not+qualify+as+a+reduction.+Reductions+is+only+be+achieved+through+successful+geological+storage+of+captured+CO2.+To+popularize+%3Cb%3EOCCS%3C%2Fb%3E%2C+we+need+to+expedite+the+establishment+of+the+technology+and+further+our+discussions+across+the+entire+value+chain.%E2%80%9C+%3Cbr%3E%E3%80%80%E2%80%9CWe+are+considering+whether+we+can+incorporate+CO2+captured+on+board+ships+into+CCS+projects+that+capture+and+store+CO2+at+steel+mills%2C+power+plants%2C+and+other+facilities.+We+are+also+in+talks+with+companies+whose+businesses+use+CO2+as+a+raw+material.%E2%80%9C+%3Cbr%3E%E3%80%80%E2%80%9CWe+are+now+in+an+era+where+costs+are+borne+according+to+the+amount+of+GHG+emitted+by+ships.+The+cost+is+expected+to+rise+in+the+future.+In+the+future%2C+there+is+a+possibility+that+the+introduction+of+%3Cb%3EOCCS%3C%2Fb%3E+will+progress+from+an+economic+perspective.+To+ensure+that+the+captured+CO2+is+not+left+without+a+place+to+go%2C+creating+a+system+to+accommodate+it%2C+including+establishing+legislation%2C+will+be+a+major+challenge.%E2%80%9C+%3Cbr%3E+%3Cbr%3E%E3%80%80Hiromasa+Kano+graduated+from+the+Graduate+School+of+Engineering+at+the+University+of+Tokyo+in+2001+and+joined+Mitsubishi+Heavy+Industries.+After+working+in+the+Nagasaki+Shipyard%E2%80%99s+Shipbuilding+Design+Department%2C+Ship+and+Marine+Technology+Department%2C+and+Passenger+Ship+Project+Office%2C+he+assumed+his+current+position+in+November+2023.+50+years+old.+%3Cbr%3E%3Cbr%3E%3Cbr%3E%3Cbr%3EDisclaimer%3A+The+English+translations+provided+through+this+service+are+the+result+of+translations+made+by+The+Japan+Maritime+Daily+or+automatically+and+mechanically+translated+by+The+Japan+Maritime+Daily+using+an+automated+translation+system+provided+by+a+third+party+after+certain+processing+of+the+Japanese+content+licensed+by+the+third+party.+In+terms+of+the+English+translation%2C+The+Japan+Maritime+Daily+and+MarineNet+Co.%2C+Ltd.+make+no+warranty+or+burden+of+any+kind%2C+express+or+implied%2C+including+its+accuracy%2C+reliability%2C+validity+or+fitness+for+a+particular+purpose.+MarineNet+Users+should+fully+understand+that+this+service+uses+an+automated+translation+system+that+automatically+and+mechanically+recognizes+and+analyzes+information+and+produces+results.+The+users+should+understand+the+above+conditions+before+using+this+service.%3Cbr%3E%3Cbr%3E%E5%85%8D%E8%B2%AC%E4%BA%8B%E9%A0%85%EF%BC%9A%E3%81%93%E3%81%AE%E3%82%B5%E3%83%BC%E3%83%93%E3%82%B9%E3%82%92%E4%BB%8B%E3%81%97%E3%81%A6%E6%8F%90%E4%BE%9B%E3%81%95%E3%82%8C%E3%82%8B%E8%8B%B1%E8%A8%B3%E3%81%AF%E3%80%81%E6%97%A5%E6%9C%AC%E6%B5%B7%E4%BA%8B%E6%96%B0%E8%81%9E%E3%81%8C%E4%BD%9C%E6%88%90%E3%81%99%E3%82%8B%E3%81%8B%E3%80%81%E5%8F%88%E3%81%AF%E3%80%81%E7%AC%AC%E4%B8%89%E8%80%85%E3%81%8B%E3%82%89%E4%BD%BF%E7%94%A8%E8%A8%B1%E8%AB%BE%E3%82%92%E5%8F%97%E3%81%91%E3%81%9F%E6%97%A5%E6%9C%AC%E8%AA%9E%E3%81%AE%E3%82%B3%E3%83%B3%E3%83%86%E3%83%B3%E3%83%84%E3%82%92%E3%80%81%E6%97%A5%E6%9C%AC%E6%B5%B7%E4%BA%8B%E6%96%B0%E8%81%9E%E3%81%8C%E4%B8%80%E5%AE%9A%E3%81%AE%E5%87%A6%E7%90%86%E3%82%92%E8%A1%8C%E3%81%A3%E3%81%9F%E4%B8%8A%E3%81%A7%E3%80%81%E7%AC%AC%E4%B8%89%E8%80%85%E3%81%8C%E6%8F%90%E4%BE%9B%E3%81%99%E3%82%8B%E8%87%AA%E5%8B%95%E7%BF%BB%E8%A8%B3%E3%82%B7%E3%82%B9%E3%83%86%E3%83%A0%E3%82%92%E5%88%A9%E7%94%A8%E3%81%97%E3%81%A6%E8%87%AA%E5%8B%95%E7%9A%84%E3%83%BB%E6%A9%9F%E6%A2%B0%E7%9A%84%E3%81%AB%E7%BF%BB%E8%A8%B3%E3%81%97%E3%81%9F%E7%B5%90%E6%9E%9C%E3%81%A7%E3%81%82%E3%82%8A%E3%80%81%E6%97%A5%E6%9C%AC%E6%B5%B7%E4%BA%8B%E6%96%B0%E8%81%9E%E3%80%81%E3%83%9E%E3%83%AA%E3%83%B3%E3%83%8D%E3%83%83%E3%83%88%E3%81%AF%E3%80%81%E5%BD%93%E8%A9%B2%E8%8B%B1%E8%A8%B3%E3%81%AB%E9%96%A2%E3%81%97%E3%81%A6%E3%80%81%E3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【インタビュー　海運脱炭素　船上CCSの役割】三菱造船マリンエンジニアリングセンター環境技術部開発グループ長・加納裕真氏、全ての燃料に効果
2026/01/28(水)
日本海事新聞 JMD


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