Abstract: 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.

Key words: biomass, waste plastic, waste tyre, coal, co-pyrolysis