School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China.
School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China.
J Hazard Mater. 2022 Jan 5;421:126764. doi: 10.1016/j.jhazmat.2021.126764. Epub 2021 Jul 29.
The contamination of producer gas with tar due to inefficient removal methods remains a major challenge in the bioenergy industry and a critical barrier, hindering commercial applications of biomass gasification technology. Single syngas treatment through primary and secondary tar removal method is insufficient to produce a tar free syngas. Currently widely applied tar removal methods are catalytic reforming and plasma reforming. Though both methods have hindrances of fast catalyst deactivation due to coke deposition and reduced syngas selectivity with large quantities of undesired liquid products from plasma reforming. Our review paper showed that hybrid plasma catalysis could be a breakthrough in tar reforming methods and overcome major drawbacks. Though, very little work on review articles have reported merging non-thermal plasma and heterogeneous catalyst. Plasma catalysis offers an inexpensive viable future technology of tar reforming through biomass gasification. The article assessed in-depth the synergistic effect created during the interaction of energetic plasma species and catalyst radicals in tar reforming. Review results show that merging plasma with catalysts noticeably Nickel, Non-nickel metal catalyst and zeolites gave pleasant results of tar conversion efficiency, improved gas selectivity and improved catalyst stability.
由于去除效率低下，生物能源行业的生物气化技术仍面临主要挑战，即生产气体中焦油污染问题。采用一级和二级焦油去除方法对单一合成气进行处理，无法产生无焦油的合成气。目前广泛应用的焦油去除方法为催化重整和等离子体重整。尽管这两种方法都存在由于积碳导致催化剂快速失活的问题，而且等离子体重整会产生大量不需要的液体产物，从而降低合成气的选择性。我们的综述论文表明，等离子体与催化剂的混合可能是焦油重整方法的一个突破，可以克服主要缺点。然而，很少有关于综述文章报道过非热等离子体和多相催化剂的结合。等离子体催化为通过生物质气化进行焦油重整提供了一种具有成本效益的可行未来技术。本文深入评估了在焦油重整过程中，高能等离子体物种和催化剂自由基相互作用产生的协同效应。综述结果表明，将等离子体与催化剂（如镍、非镍金属催化剂和沸石）结合使用，可显著提高焦油转化率、改善气体选择性并提高催化剂稳定性。
