石油学报(石油加工) ›› 2020, Vol. 36 ›› Issue (3): 551-556.doi: 10.3969/j.issn.1001-8719.2020.03.015

• 研究报告 • 上一篇    下一篇

含油污泥基多孔炭材料的制备及其CO2吸附性能

孟凡志,巩志强,王振波,孙治谦,房佩文,刘雷,张颢腾   

  1. 中国石油大学(华东)化学工程学院,山东 青岛 266580
  • 收稿日期:2019-03-28 修回日期:2019-07-25 出版日期:2020-05-25 发布日期:2020-07-21
  • 通讯作者: 巩志强,男,讲师,博士,从事固体废弃物无害化及资源利用研究,E-mail:zhqgong@foxmail.com E-mail:zhqgong@foxmail.com
  • 作者简介:第一作者:孟凡志,男,硕士研究生,从事含油污泥资源化利用研究
  • 基金资助:
    山东省自然科学基金项目(ZR2017BEE042)和污染控制 与资源化研究国家重点实验室开放课题(PCRRF19023)

Preparation of Porous Carbon Materials From Oil Sludge and Their CO2 Adsorption Properties

MENG Fanzhi, GONG Zhiqiang, WANG Zhenbo, SUN Zhiqian, FANG Peiwen, LIU Lei, ZHANG Haoteng   

  1. College of Chemical Engineering, China University of Petroleum, Qingdao 266580, China
  • Received:2019-03-28 Revised:2019-07-25 Online:2020-05-25 Published:2020-07-21

摘要: 含油污泥热解能实现危险固体废弃物的资源化利用,热解后的油、气可作为化工原料,热解焦因具有良好的孔隙结构可用作吸附材料。以烘干的含油污泥为原料,KOH为活化剂,在N2气氛下通过水平管式热解炉制备多孔炭材料,采用扫描电子显微镜、比表面积及孔隙分析仪等手段对活化温度为600 ℃、700 ℃以及800 ℃下炭材料的比表面积、孔隙结构及CO2吸附性能进行全面分析,系统研究并总结不同活化温度与酸洗条件对多孔炭材料物理结构和CO2吸附特性的影响规律。结果表明,粒径在0.074 mm以下经酸洗处理的油泥热解焦与KOH掺混加热到700 ℃制备出的炭材料CO2吸附性能最好,达到1.36 mmol/g。这种低成本、高效率的制备方法既能得到高吸附性能的多孔炭材料,又能充分利用油田生产过程中产生的危险固体废弃物,最大限度地实现环境保护,具有重要的现实意义。

关键词: 含油污泥, 热解, 炭材料, 活化温度, 酸洗, 吸附性能

Abstract: Oil sludge pyrolysis can reuse hazardous solid wastes. Oil and gas from oil sludge pyrolysis can be used as chemical raw materials, and pyrolysis coke can be used as adsorption materials due to its good pore structure. Dried oil sludge as raw material and potassium hydroxide as activator under nitrogen atmosphere, porous carbon materials were prepared with using a horizontal tube pyrolysis furnace. Specific surface area, pore structure and CO2 adsorption properties of the prepared carbon materials at activation temperatures of 600 ℃, 700 ℃ and 800 ℃ were measured by scanning electron microscopy, transmission electron microscopy, specific surface area and pore analyzer. Effects of different activation temperatures and pickling conditions on physical structure and CO2 adsorption properties of the prepared porous carbon materials were systematically studied and summarized. Experimental results show that the carbon materials, whose particle size are less than 0.074 mm, first washed by acid and then mixed with KOH and heated at 700 ℃, have the best CO2 adsorption capacity. The proposed preparation procedures are easy to follow and inexpensive. It is of great practical significance to prepare porous carbon materials with high adsorption capacity and also reuse hazardous solid wastes in the oilfield production process to protect environment.

Key words: oil sludge, pyrolysis, carbon materials, activation temperature, pickling, adsorption properties