Biomass materials ZMS, ADR, and AHH were purchased from the provider. A mass flow meter was used to monitor the volume of nitrogen pumped into the reaction system. A vertical open tube furnace (GWL-1200G) was used for pyrolysis and gasification reaction. A steam generator equipped with a peristaltic pump (LHZW001) was used to supply steam flow. The syngas from the reaction container were cooled down in a water bath cooler, and the volume of the syngas was measured with a glass rotor flow meter (LZB-10). The syngas was analyzed with a portable infrared gas analyzer (Gasboard-3100P).