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日本海事新聞ニュース Japan Maritime Daily May 15, 2026 (Fri)

NYK and Partners Combat Methane Slip: First Measurement Confirms High Performance of Oxidation Catalyst on "KEYS Azalea"

“KEYS Azalea“

　On May 14, NYK announced that it had conducted the first measurement in a demonstration test of a m ・・・続きはログインして下さいnext %E3%80%80On+May+14%2C+%3Cb%3ENYK%3C%2Fb%3E+announced+that+it+had+conducted+the+first+measurement+in+a+demonstration+test+of+a+methane+oxidation+catalyst+system+for+LNG-fueled+marine+engines+on+the+LNG+%28liquefied+natural+gas%29+bunkering+vessel+%E2%80%9CKEYS+Azalea%2C%E2%80%9C+owned+by+KEYS+Bunkering+West+Japan+%28Kitakyushu+City%29+and+managed+by+Taiheiyo+Enkai+Kisen+Kaisha+of+the+%3Cb%3ENYK%3C%2Fb%3E+Group.+%3Cbr%3E%E3%80%80This+demonstration+test+is+being+conducted+jointly+by+%3Cb%3ENYK%3C%2Fb%3E%2C+Mitsubishi+Heavy+Industries+Marine+Machinery+%26+Equipment+%28MHI-MME%29%2C+Mitsubishi+Shipbuilding%2C+and+Daihatsu+Infinearth+%28Daihatsu+IE%29.+A+full-scale+demonstration+unit+has+been+installed+on+the+vessel%2C+which+operates+in+the+Kyushu+and+Setouchi+regions%2C+for+one+year%2C+and+its+performance+under+actual+operating+conditions+is+being+verified+toward+practical+application.+%3Cbr%3E%E3%80%80In+LNG-fueled+marine+engines%2C+a+key+issue+is+the+phenomenon+known+as+%E2%80%9Cmethane+slip%2C%E2%80%9C+in+which+methane+contained+in+the+fuel+is+not+completely+combusted+and+is+emitted+into+the+atmosphere+as+methane+gas%2C+a+highly+potent+greenhouse+gas.+The+methane+oxidation+catalyst+system+oxidizes+methane+contained+in+exhaust+gas+from+LNG-fueled+engines%2C+thereby+reducing+methane+emissions.+%3Cbr%3E%E3%80%80The+catalyst+system+was+developed+by+integrating+MHI-MME%E2%80%99s+catalyst+system+design+and+manufacturing+technology+at+its+core+with+Mitsubishi+Shipbuilding%E2%80%99s+shipbuilding+technology+and+Daihatsu+IE%E2%80%99s+engine+optimization+technology.+Initial+performance+showing+a+methane+oxidation+rate+of+70%25+or+higher+was+confirmed+in+land-based+engine+verification+tests%2C+and+in+the+first+onboard+measurement%2C+the+unit+alone+achieved+a+methane+oxidation+rate+of+90%25+or+higher+as+an+exhaust+gas+treatment+device.+%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%81%9D%E3%81%AE%E6%AD%A3%E7%A2%BA%E6%80%A7%E3%80%81%E4%BF%A1%E9%A0%BC%E6%80%A7%E3%80%81%E5%A6%A5%E5%BD%93%E6%80%A7%E5%8F%8A%E3%81%B3%E7%89%B9%E5%AE%9A%E7%9B%AE%E7%9A%84%E3%81%B8%E3%81%AE%E9%81%A9%E5%90%88%E6%80%A7%E3%82%92%E5%90%AB%E3%82%81%E3%80%81%E6%98%8E%E7%A4%BA%E5%8F%88%E3%81%AF%E9%BB%99%E7%A4%BA%E3%81%AB%E3%82%82%E3%80%81%E3%81%84%E3%81%8B%E3%81%AA%E3%82%8B%E4%BF%9D%E8%A8%BC%E3%82%82%E3%81%97%E3%81%BE%E3%81%9B%E3%82%93%E3%80%82%E3%83%9E%E3%83%AA%E3%83%B3%E3%83%8D%E3%83%83%E3%83%88%E3%83%A6%E3%83%BC%E3%82%B6%E3%83%BC%E3%81%AF%E3%80%81%E3%81%93%E3%81%AE%E3%82%B5%E3%83%BC%E3%83%93%E3%82%B9%E3%81%8C%E3%80%81%E8%87%AA%E5%8B%95%E7%9A%84%E3%81%8B%E3%81%A4%E6%A9%9F%E6%A2%B0%E7%9A%84%E3%81%AB%E6%83%85%E5%A0%B1%E3%82%92%E8%AA%8D%E8%AD%98%E3%83%BB%E5%88%86%E6%9E%90%E3%81%97%E3%81%A6%E7%B5%90%E6%9E%9C%E3%82%92%E5%87%BA%E5%8A%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%8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