Biomass grinding characteristic research device and application

The invention belongs to the technical field of biomass energy utilization pretreatment, and relates to a biomass grinding characteristic research device and application, the biomass grinding characteristic research device comprises an oxygen pipeline, a nitrogen pipeline and gas mass flow meters arranged on the oxygen pipeline and the nitrogen pipeline, the oxygen pipeline and the nitrogen pipeline pass through the gas mass flow meters and then converge to a main gas conveying pipeline, a gas heater is arranged at an outlet of the main gas conveying pipeline, an outlet of the gas heater enters a grinding tank through a pipeline, a material is divided into two paths by an outlet of the grinding tank through a rotary joint, one path is conveyed to a condensation purifier for condensation, the other path is conveyed to a gas online analyzer for detection, and the oxygen content of N2 and O2 gas components is controlled to be 0-10% through a gas mass flow meter; the maximum heating gas mixture temperature of the