生物质与聚合物、煤共热解研究进展

Research Progress of Co-pyrolysis of Biomass with Polymers and Coal

综述了近几年来生物质与其它物质如煤和聚合物共热解的研究进展。通过对生物质、煤和聚合物的单独热解以及同煤和其它聚合物共热解的大量文献报道结果进行比较发现:生物质与许多聚合物共热解具有协同作用,可以降低液体产物的含氧量,提高热解液相产率等。显示出生物质与某些聚合物共热解比单独热解具有一定的优势;并比较了煤和生物质共热解产生的现象,得到煤和生物质共热解难以产生协同作用。本文作者结合现阶段的研究成果,提出生物质与煤采用两步法热解工艺的思路,使生物质材料的氢有可能转移到热解煤的产物中,以改善煤热解过程中液体的性质,对今后生物质与煤及聚合物共热解的研究方向提出了自己的建议。

The recent advances about co-pyrolysis of the biomass-coal and biomass-polymers are reviewed in this paper. Comparing the results from literatures for the alone pyrolysis and co-pyrolysis of biomass, coal and polymers, the co-pyrolysis of biomass and many polymers has some synergetic effects, which decreases the oxygen content in liquid product and increases the liquid yield etc. So the co-pyrolysis of biomass-polymers is more beneficial than the alone pyrolysis of biomass and polymers. But the coal is another matter, the co-pyrolysis of biomass-coal has not synergetic effects. In order to achieve the transfer of hydrogen from the biomass to the coal and improve the quality of the liquid derived from coal pyrolysis, based on the current research fruits, the new pyrolysis way that use two-step pyrolysis of biomass and coal is brought forward. Also, some suggestions about the research direction of the co-pyrolysis of biomass with coal and polymers in future are proposed.