关键词: 生物质, 炭化, 炭化设备, 规模化, 连续

Abstract:

At present, there were some problems existing in the large-scale production of domestic agricultural straw waste biomass pyrolysis carbonization equipment, such as unstable operation, low straw carbonization yield and difficult recovery, etc. Using rice husk and corn straw molding particles as raw materials, the situation of long-time continuous carbonization in this large-scale continuous biomass carbonization equipment was studied, and the applicability and stability of this equipment were analyzed systematically. The equipment was composed of a carbonization unit, a gas separation unit, and a biochar discharge unit. The carbonization unit adopted a double-layer sleeve structure, where the inner layer was a carbonization chamber and the outer layer was a gas heating chamber. The high calorific value biomass gas produced by biomass carbonization was recovered and then combustion-heated to realize the continuous operation of pyrolysis carbonization process. The results showed that the design of the biomass carbonization equipment was reasonable, which could satisfy the carbonization of different raw materials and realize the continuous and stable carbonization of rice husk and corn stalk particles for a long time. The carbonization capacity could reach 490 kg/h. When the carbonization temperature was controlled at around 500 ℃, the yield of biochar was more than 37%. After pyrolysis, the solid, liquid, and gas phases were completely separated, and the gas was recycled.

Key words: biomass, carbonization, carbonization equipment, scale, continuous