Abstract: A biomass powder impurity removal, baking and automatic treatment system includes a biomass powder lump treatment assembly, a dust removal assembly, a sealed baking treatment assembly and a cooling collection assembly. A suction port of the dust removal assembly is connected with a dust removal port of the biomass powder lump treatment assembly and a dust removal port of the sealed baking treatment assembly through pipes to collect lightweight dust. A biomass powder material containing lumps enters the sealed baking treatment assembly after being re-crushed into powder through the biomass powder lump treatment assembly, and the biomass powder material is baked into semi-coke by the sealed baking treatment assembly. The semi-coke is weighed and packed after being cooled by the cooling collection assembly.

Abstract: The disclosure relates to a method for producing levulinic acid in a molten salt hydrate from cellulose hydrolysis. An inorganic molten salt hydrate was prepared by mixing an inorganic salt with water, cellulose is added and stirred to dissolve, a solid catalyst is added and heated up for reaction to obtain a reactant, the reactant is cooled and subjected to a separation to obtain the levulinic acid, and the inorganic molten salt hydrate and the solid catalyst obtained after the separation are recycled, wherein the inorganic salt is one or more selected from the group consisting of LiCl, LiBr, CaBr2, Ca(NO3)2, LiNO3 and KNO3.