Chinese Journal of Chemical Engineering ›› 2020, Vol. 28 ›› Issue (1): 279-285.doi: 10.1016/j.cjche.2019.06.007

• Energy, Resources and Environmental Technology • Previous Articles     Next Articles

Simulated biomass tar removal mechanism by a Quench Coupled with ADsorption Technology (QCADT)

Xiaosong Zhang1,2, Jiawei Pan1,2, Liang Wang3, Hongqi Sun4, Yuezhao Zhu1,2, Haijun Chen1,2   

  1. 1 Jiangsu Key Laboratory of Process Enhancement and New Energy Equipment Technology, Jiangsu Engineering Laboratory of Energy Conservation and Environmental Protection Technologies and Equipment in Process Industry, Nanjing 211816, China;
    2 School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing 211816, China;
    3 College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 210009, China;
    4 School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA6027, Australia
  • Received:2019-03-24 Revised:2019-06-05 Online:2020-01-28 Published:2020-03-31
  • Contact: Haijun Chen
  • Supported by:
    Supported by the Six Talent Peaks Project in Jiangsu Province (2015-ZBZ-015), the top-notch academic programs project of Jiangsu Higher Education Institutions (PPZY2015A022) and the Natonal Key Reasearch and Development Program of China (2018YFB1502900, 2018YFB1502903).

Abstract: Tar removal is a bottleneck in the smooth commercialization of biomass gasification technology. Based on introducing adsorption process into Quench Coupled with ABsorption Technology (QCABT) previously proposed by the author's group, Quench Coupled with ADsorption Technology (QCADT) has been developed to narrow this gap. Additionally, benzene and naphthalene, which are more similar to the real tar for containing aromatic ring structures, were adopted as light and heavy simulated tar, respectively. Also their removal behavior by QCADT was investigated. The results show that the removal mechanism of QCADT is similar to that of QCABT, except for the higher overall tar removal rate due to adsorption effect. Adsorbents with both micro- and narrow mesopores exhibit a better benzene removal performance, while narrow mesopores play dominant roles in naphthalene removal. Penetration adsorption loading of benzene and naphthalene on AC-1 can reach 0.38 g·g-1 and 0.34 g·g-1, respectively. The sawdust hardly has any tar removal effect. Combined micro- and meso-pores, will benefit both deep tar removal and large adsorption rate, providing a high tar removal efficiency.

Key words: Biomass gasification, Tar removal, Adsorption, Couple, Pore