Maithomklang Somkiat, Wathakit Khatha, Sukjit Ekarong, Sawatmongkhon Boonlue, Srisertpol Jiraphon
School of Mechanical Engineering, Institute of Engineering, Suranaree University of Technology, 111 University Avenue, Suranaree Sub-District, Muang District, Nakhon Ratchasima 30000, Thailand.
School of Agricultural and Food Engineering, Institute of Engineering, Suranaree University of Technology, 111 University Avenue, Suranaree Sub-District, Muang District, Nakhon Ratchasima 30000, Thailand.
ACS Omega. 2022 Jun 8;7(24):20542-20555. doi: 10.1021/acsomega.1c07345. eCollection 2022 Jun 21.
In the present work, an experimental investigation is carried out on the use of waste plastic oil produced from waste poly(ethylene terephthalate) (PET) bottles (WPOB) as an alternative fuel for diesel engines. The physical and chemical properties of WPOB were analyzed, and it was found that it has fuel properties similar to those of petroleum fuels. The WPOB was tested in a diesel engine to evaluate the effect of WPOB on combustion and emissions characteristics. In addition, particulate matter (PM) emissions generated by the combustion of WPOB were analyzed. The combustion of WPOB was retarded with respect to diesel fuel, resulting in higher carbon-based emissions. The thermogravimetric analysis (TGA) results show that the temperature to reach the maximum rate of soot oxidation was lower with WPOB combustion. Because of the significant delay at the start of combustion and increase in emissions, the direct use of WPOB in the diesel engine is not recommended. It is suggested that WPOB can be used as a blend component to reduce the amount of diesel fuel used in diesel engines. Thus, further study on the effect of diesel fuel blended with WPOB on the combustion and emissions characteristics was performed. The results reveal that the maximum WPOB present in diesel fuel to avoid the increase in carbon-based emissions is 20% by volume to keep combustion and emissions characteristics similar to those of diesel fuel.
在本研究中，对由废弃聚对苯二甲酸乙二酯（PET）瓶生产的废塑料油（WPOB）作为柴油发动机替代燃料的使用进行了实验研究。分析了WPOB的物理和化学性质，发现其具有与石油燃料相似的燃料特性。在柴油发动机中对WPOB进行了测试，以评估WPOB对燃烧和排放特性的影响。此外，还分析了WPOB燃烧产生的颗粒物（PM）排放。与柴油相比，WPOB的燃烧延迟，导致基于碳的排放更高。热重分析（TGA）结果表明，WPOB燃烧时达到烟灰氧化最大速率的温度较低。由于燃烧开始时存在明显延迟且排放增加，不建议在柴油发动机中直接使用WPOB。建议将WPOB用作混合组分，以减少柴油发动机中柴油燃料的使用量。因此，对柴油与WPOB混合对燃烧和排放特性的影响进行了进一步研究。结果表明，为避免基于碳的排放增加，柴油燃料中WPOB的最大体积含量为20%，以使燃烧和排放特性与柴油燃料相似。
