新型全混合式厨余垃圾生物干化工艺效能实证研究

开发了一种新型连续进料全混合式厨余垃圾生物干化工艺，通过中试试验探究了该工艺运行效能及其对物料温度、含水率和热值的影响规律.结果表明，该工艺可显著缩短升温时间，维持物料>50℃的高温区段20h/d；在最佳运行条件（通风速率0.171m³/（kg·h），最低控制温度45℃，干化周期7d）下，厨余垃圾含水率可降至（34.86±1.71）%，水分单位去除量达（716±23） kg_水/t_垃圾，运行能耗仅为77.91kW·h/t_垃圾，低位热值高达（6681±119） kJ/kg，满足垃圾焚烧进炉要求，可有效实现厨余垃圾快速衍生燃料化.

Empirical study on the performance of the novel full-mixed kitchen waste biodrying

The research developed a continuously full-mixed biodrying process of kitchen food waste. Impacts of the process performance on matrix’s temperature, moisture content and calorific values etc. were investigated at the pilot-scale. Results showed that it could not only significantly shorten start-up heating time, but also maintain high-temperature zone (>50℃) of the matrix temperature during the continuous operation of the biodrying for 20h/d. Under the optimal operation condition, such as ventilation volume of 0.171m³/(kg·h), heating temperature of 45℃ and retention time of 7d, the moisture content of kitchen food waste could be reduced to (34.86±1.71)% with a unit water removal rate of (716±23) kg_water/t _waste and energy consumption of 77.91kW·h/t_waste. The low calorific value of its derived fuel reached up to (6681±119)kJ/kg, which fulfilled the requirement for waste incineration and could rapidly convert kitchen waste to feed for fuel.