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Developing techno-economically sustainable methodologies for deep desulfurization using hydrodynamic cavitation

机译：开发利用水动力空化技术进行深度脱硫的技术，经济上可持续的方法

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摘要

The present work, for the first time, describes the efficacy of the cavitation process and compares the cavitation yield for two types of cavitation devices-one employing linear flow for the generation of cavities and other employing vortex flow. The process involves pre-programmed mixing of the organic and aqueous phases, and can be carried out using simple mechanical cavitating devices such as orifice or vortex diode. The process essentially exploits in situ generation of oxidising agents such as hydroxyl radicals for oxidative removal of sulfur. The efficiency of the process is strongly dependent on the nature of device apart from the nature of the organic phase. The effects of process parameters and engineering designs were established for three organic solvents (n-octane, toluene, n-octanol) for model sulfur compound-Thiophene. A very high removal to the extent of 95% was demonstrated. The results were also verified using commercial diesel. The cavitation yield is significantly higher for vortex diode compared to the orifice. The process has potential to provide a green approach for desulfurization of fuels or organics without the use of catalyst or external chemicals/reagents apart from newer engineering configurations for effective implementation of hydrodynamic cavitation in industrial practice and also appears to be economically sustainable.
机译：本工作首次描述了空化过程的功效，并比较了两种类型的空化装置的空化产率，一种采用线性流产生空穴，另一种采用涡流。该方法涉及有机相和水相的预编程混合，可以使用简单的机械空化设备（例如孔板或涡流二极管）进行。该方法主要利用原位产生氧化剂例如羟基自由基以氧化除去硫。除有机相的性质外，该方法的效率在很大程度上取决于装置的性质。建立了用于模型硫化合物-噻吩的三种有机溶剂（正辛烷，甲苯，正辛醇）的工艺参数和工程设计的影响。结果表明，去除率很高，达到95％。使用商用柴油也验证了结果。与节流孔相比，涡流二极管的空化产率要高得多。除了可以在工业实践中有效实施流体动力空化的新型工程组态外，该工艺还可能为不使用催化剂或外部化学物质/试剂的燃料或有机物脱硫提供一种绿色方法。

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  • 来源
    《Fuel》 |2017年第15期|482-490|共9页
  • 作者

    Suryawanshi Nalinee B.; Bhandar Vinay M.; Sorokhaibam Laxmi Gayatri; Ranade Vivek V.;

  • 作者单位

    CSIR, Chem Engn & Proc Dev Div, Natl Chem Lab, Pune 411008, Maharashtra, India|CSIR, Acad Sci & Innovat Res AcSIR, Natl Chem Lab, Pune 411008, Maharashtra, India;

    CSIR, Chem Engn & Proc Dev Div, Natl Chem Lab, Pune 411008, Maharashtra, India|CSIR, Acad Sci & Innovat Res AcSIR, Natl Chem Lab, Pune 411008, Maharashtra, India;

    VNIT, Dept Chem, Nagpur 440010, Maharashtra, India;

    CSIR, Chem Engn & Proc Dev Div, Natl Chem Lab, Pune 411008, Maharashtra, India|Queens Univ Belfast, Sch Chem & Chem Engn, Belfast, Antrim, North Ireland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Fuel; Sulfur removal; Pollution control; Oxidation; Petroleum;

    机译：燃料;脱硫;污染控制;氧化;石油;

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