Biomass pyrolysis refers to the process of converting biomass into low molecular weight substances such as charcoal, liquids, and gases through thermochemical conversion under conditions of isolating air or supplying a small amount of air. Biomass pyrolysis technology can convert low-energy density biomass that is difficult to handle by conventional methods into high-energy density gas, liquid, and solid products at a lower cost and with a continuous production process, reducing the volume of biomass and facilitating storage and transportation. At the same time, high value-added chemicals can be extracted from bio oil.

　　Biomass pyrolysis refers to the process of converting biomass into low molecular weight substances such as charcoal, liquids, and gases through thermochemical conversion under conditions of isolating air or supplying a small amount of air. The products of pyrolysis include fuel oil, wood tar, wood gas, charcoal, etc. If the heating rate is above 1000 ℃/s, the yield of pyrolysis oil can reach over 60%. By controlling the corresponding conditions (mainly reaction temperature, heating rate, residence time) parameters in pyrolysis, different pyrolysis products can be obtained. Biomass pyrolysis technology can convert low-energy density biomass that is difficult to handle by conventional methods into high-energy density gas, liquid, and solid products at a lower cost and with a continuous production process, reducing the volume of biomass and facilitating storage and transportation. At the same time, high value-added chemicals can be extracted from bio oil.