高黏度生物原油的乳化及燃烧性能研究

摘要利用畜禽废弃物水热液化制备的生物原油的残余物，因黏度大、流动性差、易聚合等特点，难以再利用。针对这一问题，设计研制了不同定-转子结构参数的齿合型高剪切混合器，研究了不同转子直径、剪切间隙、齿数和齿长等结构参数对所制备的乳化样品中液滴大小的影响；进而，采用优选的高剪切混合器，考察了乳化操作时间、转子转速、生物原油含量等因素对乳化效果的影响，并测定了乳化样品的燃烧性能。结果表明，随着转子转速的增加或操作时间的延长，生物原油乳化样品中液滴尺寸显著降低；在转子转速为7 700 r·min^-1，高剪切混合乳化操作时间30 min时，生物原油质量分数10%的乳化样品中液滴直径低于10 μm；乳化样品的燃烧性能显著提升，生物原油质量分数15%的高剪切混合乳化样品的燃烧效率达到95.3%，但是生物原油含量继续增大会使燃烧效率下降。

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	刘松涛
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	王逸飞
	李韡

关键词：高剪切混合器生物原油乳化燃烧效率

Abstract： Biocrude oil residuals, which are produced through the hydrothermal liquefaction of livestock and poultry waste, are hard to be utilized owing to the feature of high viscosity, poor fluidity and sensitive polymerization, etc. To solve this problem, a series of teethed high shear mixers (HSMs) with different stator-rotor configurations were designed, and studied the effects of the rotor diameter, the shear gap, the teeth number and height on the size of droplets in the emulsified samples. Further, adopting the optimal HSM, the influences of the emulsification operating time, the rotor speed and the biocrude oil content on the emulsification performance were investigated, and the combustion performances of the emulsified samples were tested. The results show that the droplet size of the emulsified samples decreases notably with the increase of the rotor speed or the entension of the operating time. The emulsified samples containing 10% biocrude oil has the largest droplet size less than 10 μm after the emulsification under the rotor speed of 7 700 r·min^-1 and the operating time of 30 min. The combustion efficiency of the emulsified samples can be improved greatly, the combustion efficiency of the HSM-emulsified samples containing 15% biocrude oil is up to 95.3%, whereas the combustion efficiency reduces as the biocrude oil content increases further.

Keywords： high-shear mixer biocrude oil emulsification combustion efficiency

Received 2021-06-17;

Fund:国家重点研发计划资助项目（2016YFD0501402-04）。

Corresponding Authors: 李韡,E-mail:liwei@tju.edu.cn。 Email: liwei@tju.edu.cn

About author: 刘松涛(1996-),男,硕士研究生,主要从事高剪切乳化方面的研究。

引用本文:

刘松涛, 赵术春, 王逸飞, 李韡.高黏度生物原油的乳化及燃烧性能研究[J]. 化学工业与工程, 2021,38(6): 87-94

Liu Songtao, Zhao Shuchun, Wang Yifei, Li Wei.Investigation of Emulsification and Combustion Performance of Highly Viscous Biocrude Oil[J]. Chemcial Industry and Engineering, 2021,38(6): 87-94

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