石油学报(石油加工) ›› 2019, Vol. 35 ›› Issue (2): 312-319.doi: 10.3969/j.issn.1001-8719.2019.02.013

• 研究报告 • 上一篇    下一篇

油泥与微藻生物质掺混共热解动力学研究

巩志强,杜爱勋,王振波,孙治谦,房佩文,王磊,王振通,李晓宇   

  1. 中国石油大学(华东)化学工程学院,山东 青岛 266580
  • 收稿日期:2018-02-06 修回日期:2018-07-19 出版日期:2019-03-25 发布日期:2019-05-22
  • 通讯作者: 王振波,男,教授,博士,主要从事环保工艺及装备、石油化工装备的过程强化与系统集成研究;E-mail:dxl437@sina.com E-mail:gongzhiqiang@upc.edu.cn
  • 作者简介:第一作者:巩志强,男,讲师,博士,主要从事固体废弃物资源化利用研究;E-mail:gongzhiqiang@upc.edu.cn
  • 基金资助:
    山东省自然科学基金(ZR2017BEE042)和中国博士后科学三多项目(2018T110716)资助

Reaction Kinetics of Oil Sludge and Microalgae Co-Pyrolysis

GONG Zhiqiang, DU Aixun, WANG Zhenbo, SUN Zhiqian, FANG Peiwen, WANG Lei, WANG Zhentong, LI Xiaoyu   

  1. College of Chemical Engineering, China University of Petroleum, Qingdao 266580, China
  • Received:2018-02-06 Revised:2018-07-19 Online:2019-03-25 Published:2019-05-22

摘要: 针对油泥与微藻生物质掺混共热解处理工艺,利用热分析仪在N2气氛下对其进行不同升温速率(β)以及不同掺混比(φ)的实验研究,分析了各自组成及性质,通过分析质量损失(TG)、质量损失变化率(DTG)曲线,对热解过程进行反应阶段划分。此外,采用Doyle积分及Hancock经验公式进行热解动力学参数拟合求解。实验结果表明,油泥与微藻掺混热解过程可划分为5个阶段;其中,掺混共热解过程中阶段Ⅱ、Ⅲ、Ⅳ的反应级数分别为1级、1.5级、0.5级,活化能分别为15.07~42.34 kJ/mol、62.69~76.86 kJ/mol、7.99~15.66 kJ/mol;油泥与微藻掺混共热解,改善了油泥的颗粒形态,提高传热传质效率,降低了反应阻力,从而降低了热解过程中的活化能。

关键词: 油泥, 微藻, 热解, 动力学, 活化能

Abstract: To investigate co-pyrolysis treatment of oil sludge and microalgae, the composition and properties of oil sludge and microalgae were analyzed, respectively. With utilizing a thermogravimetric analyzer, co-pyrolysis experiments were performed with different heating rates (β) and mixing ratios (φ) under nitrogen atmosphere. The thermogravimetry (TG) curves and derivative thermogravimetric (DTG) curves were analyzed to understand the co-pyrolysis reaction kinetics. Experimental results show that the co-pyrolysis process can be divided into several different stages. In addition, Doyle integral and Hancock empirical formula were applied to obtain kinetic parameters from experimental data. It was found that there are five stages in the sludge and microalgae co-pyrolysis process. Reaction orders of stage Ⅱ, Ⅲ and Ⅳ are 1, 1.5 and 0.5, respectively, and their corresponding activation energies are 15.07-42.34 kJ/mol, 62.69-76.86 kJ/mol, and 7.99-15.66 kJ/mol. Co-pyrolysis of oil sludge and microalgae can lead to preferred particle morphology, improve heat and mass transfer efficiency, reduce the reaction resistance, and thus reduce activation energy in the pyrolysis process.

Key words: oil sludge, microalgae, pyrolysis, kinetics, activation energy