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首页> 外文期刊>Fuel >Waste lube-oil based fuel characterization in real conditions. Case study: Bottom-trawl fishing vessel powered with medium speed diesel engine
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Waste lube-oil based fuel characterization in real conditions. Case study: Bottom-trawl fishing vessel powered with medium speed diesel engine

机译：在实际条件下基于废润滑油的燃料特性分析。案例研究：搭载中速柴油机的拖网渔船

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摘要

The high-fuel dependency of the shipping industry and its corresponding pollutant emissions need to be addressed within the new de-carbonisation era. Concurrently, the waste-to-energy concept arises to drive sustainable initiatives for energy production. In that sense, in the present study, the feasibility of an alternative fuel oil (AFO) based on recycled-waste lubricating oil was assessed. Tests were conducted on board a bottom-trawler fishing vessel, under real operating conditions. The fishing activity was monitored, and the engine performance, the combustion and injection properties, and the emissions characteristics were studied. The vessel performance when operating on the AFO was compared with that when operating on standard distillate diesel oil (DFO). The results showed that the AFO required preheating up to 70 degrees C owing to its higher viscosity value, which is considerably higher than the allowed by the ISO 8217 standard for distillate fuels. Therefore, a heating module was installed on board the vessel to ensure optimal performance with the AFO. The fuel consumption was slightly lower for the AFO; however, owing to its higher low-heating value, the engine efficiency was higher when using the DFO. The AFO presented lower combustion pressure than the DFO and a longer combustion period; however, its ignition process occurred earlier. The results suggested that the AFO contained light components which caused the early ignition of the fuel, as well as heavy components, which delayed the end of the combustion. The NOX emissions were considerably reduced with the AFO by 15%; the CO2 emissions were slightly reduced as well; however, CO emissions were higher for the AFO by 15%. By operating under the usual conditions while burning the AFO throughout a year, the vessel would consume 8 t of fuel less, and would emit 21 t of greenhouse gases less. The vessel burnt a total of 40,000 L of AFO, for approximately 300 h, without any operational issue. The results demonstrate that the distillate fuel obtained from lubricating oil is suitable for marine medium-speed engines and enables satisfactory performance.
机译：在新的脱碳时代，航运业对高燃料的依赖性及其相应的污染物排放需要得到解决。同时，废物转化为能源的概念应运而生，以推动可持续的能源生产计划。从这个意义上讲，在本研究中，评估了基于回收废润滑油的替代燃料油（AFO）的可行性。在实际操作条件下在底拖网渔船上进行测试。监测捕鱼活动，并研究了发动机性能，燃烧和喷射特性以及排放特性。将使用AFO操作的船舶性能与使用标准馏出柴油（DFO）的船舶性能进行了比较。结果表明，AFO由于其较高的粘度值而需要预热至70摄氏度，该值大大高于ISO 8217标准对馏出燃料的允许值。因此，在船上安装了加热模块，以确保AFO的最佳性能。 AFO的油耗略低；但是，由于其较高的低发热量，因此使用DFO时发动机效率更高。 AFO的燃烧压力低于DFO，燃烧时间更长。但是，其点火过程较早。结果表明，AFO包含导致燃油提前点火的轻组分以及重组分，这些组分延迟了燃烧的结束。 AFO使NOX排放量大大减少了15％；二氧化碳排放量也略有减少；但是，AFO的CO排放量高出15％。通过在通常的条件下运行一年而燃烧AFO，该船将减少8吨燃料消耗，并减少21吨温室气体排放。该船共燃烧了40,000升AFO，持续约300小时，没有任何操作问题。结果表明，从润滑油获得的馏出燃料适用于船用中速发动机并具有令人满意的性能。

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