Application of surfactant in promoting hydrothermal carbon forming

The invention discloses application of surfactants in promoting hydrothermal carbon forming and belongs to the field of biomass resource utilization. For the application of the surfactants in promoting the hydrothermal carbon forming, five different surfactants such as Tween 80, Span 80, sodium dodecylbenzene sulfonate, sodium lignosulfonate, PEG 400 are added to the mixture of biomass and water,and consequently, surfactants have a good effect on the preparation of biomass carbon materials with high energy density, and also have a significant improvement effect on biochar forming properties.The application of the surfactants in promoting the hydrothermal carbon forming has the advantages of effectively increasing the solid yield of biochar while significantly increasing calorific value,allowing prepared carbon raw materials to be of a very high energy density, guaranteeing shaped particles to be of a high density and a strong radial compressive strength when the prepared biochar rawmaterials are applied to th