安徽农业科学2017，Vol.45Issue(5)：214-217,4.
基于聚气释压实现厌氧干发酵自搅拌的模拟试验
Simulation Test of Self-stirring in Dry Anaerobic Fermentation Based on Releasing Pressurized Biogas
摘要
Abstract
[Objective] In order to research new approaches for solving mass transfer limitation and high mixing energy consumption in dry anaerobic fermentation process.[Method] A novel technology based on "accumulate pressurized biogas in cycles,release gas instantaneously to depressurizing" was designed as a mixing strategy which could achieve self-stirring.The experiment was carried out with compressed air as pressurized biogas and regarded box fractal dimension as quantitative evaluation index for mixing effect of materials.Effects of gas gathering pressure,pressure releasing time,gas distribution on self-stirring were studied.[Result] The results showed that fractal dimension linearly tended to increase in pace with gas pressure and increased by 12.06％ as pressure gradually reached 0.70 MPa and self-mixing effect appeared obvious.The fractal dimension grew with shortening the time and incremental gas pressure and attained positive peak 0.158 4 in condition of 0.60-0.80 s and 0.30-0.40 MPa.The mixing effect was more conspicuous.[Conclusion] Releasing pressurized biogas can achieve selfmixing in dry anaerobic fermentation.关键词
干发酵/聚气释压/自搅拌/分形维数/模拟研究Key words
Dry fermentation/Releasing pressurized biogas/Self-mixing effect/Fractal dimension/Simulation research分类
农业科技引用本文复制引用
彭竹,杨世关,李继红,陈梦圆..基于聚气释压实现厌氧干发酵自搅拌的模拟试验[J].安徽农业科学,2017,45(5):214-217,4.基金项目
风能太阳能利用技术省部共建教育部重点实验室(内蒙古工业大学)开放基金资助项目(201501). （内蒙古工业大学）
