化工进展 ›› 2025, Vol. 44 ›› Issue (7): 3869-3878.DOI: 10.16085/j.issn.1000-6613.2024-0799

• 能源加工与技术 • 上一篇    

介质阻挡放电部分氧化典型焦油组分混合物的转化特性

杨岚梅1(), 徐彬2(), 刘华财2, 杨文申2, 阴秀丽2, 吴创之2   

  1. 1.沈阳化工大学机械与动力工程学院,辽宁 沈阳 110142
    2.中国科学院广州能源研究所,中国科学院可再生能源重点实验室,广东省新能源和可再生能源研究开发与应用重点实验室,广东 广州 510640
  • 收稿日期:2024-05-13 修回日期:2024-06-30 出版日期:2025-07-25 发布日期:2025-08-04
  • 通讯作者: 徐彬
  • 作者简介:杨岚梅(1997—),女,硕士研究生,研究方向为生物质焦油脱除。E-mail:ylm3509@163.com
  • 基金资助:
    国家自然科学基金(52106282);山东能源研究院企业联合基金(SEI U202314);广州市科技计划(2024A04J10001)

Characterization of tar partial oxidative reforming by dielectric barrier discharge using mixed toluene and benzene as model compounds

YANG Lanmei1(), XU Bin2(), LIU Huacai2, YANG Wenshen2, YIN Xiuli2, WU Chuangzhi2   

  1. 1.School of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, Liaoning, China
    2.CAS Key Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China
  • Received:2024-05-13 Revised:2024-06-30 Online:2025-07-25 Published:2025-08-04
  • Contact: XU Bin

摘要:

以典型焦油组分甲苯与苯的混合物为模型化合物,于介质阻挡放电反应器上开展等离子体部分氧化焦油研究。考察O2添加量、放电功率、焦油混合物组成对甲苯与苯转化特性的影响。结果表明,介质阻挡放电部分氧化可高效转化甲苯与苯的混合物,300℃下可取得最高100.0%的甲苯转化率和98.2%的苯转化率,相应的总能量效率达34.2g/kWh,产物中CO与CO2选择性之和可达74.8%。提高O2添加量与放电功率可提高甲苯与苯混合物的转化率,并促进气相产物生成。焦油混合物中甲苯与苯比例的变化对气相产物生成和甲苯脱除影响不大,但苯脱除率随其中苯比例的降低而下降。苯基和苄基自由基是甲苯和苯转化过程中的重要中间产物,可与分子碎片反应生成液相产物,与含氧活性物质反应生成气相产物。

关键词: 焦油, 部分氧化, 介质阻挡放电, 低温等离子体

Abstract:

Biomass tar, one of the main by-products generated in the biomass gasification process, seriously hindered the efficient utilization of the gasification gas. In this study, partial oxidation of biomass tar was carried out in a dielectric barrier discharge (DBD) plasma reactor with mixed toluene and benzene as model compounds. In order to understand the reaction characteristics and thus potential of the approach, the effects of O2 addition, discharge power and composition of the mixture on performances were investigated. The results indicated that the mixture of toluene and benzene could be converted efficiently through partial oxidation induced by DBD plasma. At 300℃, the highest toluene conversion of 100.0% and benzene conversion of 98.2% with an energy efficiency of 34.2g/kWh were achieved without catalysts usage, together with a sum of CO and CO2 selectivity of 74.8%. Higher O2 addition amount and discharge power obtained better performances by promoting mixture destruction and gas product production. The variation in composition of the mixture showed little effect on toluene destruction and gas products production, while the decrease of benzene concentration in the mixture reduced the conversion of benzene. Phenyl and benzyl radicals, important intermediates in the conversion of toluene and benzene, combined with fragments to form liquid products and were oxidized by active species to generate gas products.

Key words: tar, partial oxidation, dielectric barrier discharge, nonthermal plasma

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