Gasification Principle

      Guangzhou Huanyu's biomass pyrolysis gasifier mainly uses biomass (wood chips, rice husks, straws, etc.) as raw materials, uses air as a gasification agent, and undergoes pyrolysis at a temperature of 300 ℃ ~1000 ℃ in an anoxic environment , Convert carbohydrates in organic raw materials into biomass fuel gas containing CO, H2, CH4, etc., for users to use. In the process of biomass gasification, the energy storage carrier is converted from solid to gas, which realizes the clean conversion and utilization of energy, with high energy conversion efficiency and broad prospects.

Updraft fixed bed carbonization pyrolysis gasification process

Dry layer (100~150℃):

      The material is dehydrated and dried, and most of the water is precipitated below 105°C, and then the temperature rises quickly.

Pyrolysis layer (300~700 ℃ in core area):

      When the temperature reaches 160 ℃ or higher, the endothermic and irreversible thermal decomposition reaction of macromolecular organic matter begins. The higher the temperature, the more intense the reaction.

      The product is a complex mixed gas and solid carbon, where the mixed gas includes at least hundreds of hydrocarbons, some of which can be condensed into tar at room temperature. 

Reduction layer (endothermic reaction, core area 700~900 ℃):

      C+CO2→2CO                             △H=172.47kJ

      C+H2O(g)→CO+H2                   △H=131.30kJ

      C+2H2O(g)→CO2+2H2             △H=90.17kJ

      C+2H2→CH4                             △H=-74.81kJ

      CO+H2O(g)→CO2+H2              △H=41.17kJ

Oxide layer (exothermic reaction, core area 1000~1200 ℃):

      C+O2→CO2 △H=-408.8kJ

      2C+O2→2CO △H=-246.44kJ