Method for carrying out three-phase separation on kitchen garbage by adopting supercritical fluid

The invention discloses a method for performing three-phase separation on kitchen garbage by adopting supercritical fluid, and relates to the technical field of kitchen garbage treatment. The method specifically comprises the following steps: mixing the kitchen garbage with supercritical fluid, dehydrating and deoiling the kitchen garbage, and separating a solid phase, a water phase and an oil phase. According to the method for carrying out three-phase separation on the kitchen garbage by adopting the supercritical fluid, on the basis of avoiding a traditional mechanical extrusion mode, efficient oil extraction and water removal of the kitchen garbage can be realized, so that the oil removal rate of 70-82% and the dehydration rate of 80-85% are obtained. 本发明公开了一种采用超临界流体对厨余垃圾进行三相分离的方法，涉及厨余垃圾处理技术领域。具体为：将厨余垃圾与超临界流体混合，进行厨余垃圾的脱水脱油及固相、水相、油相三相分离。本发明所提出的采用超临界流体对厨余垃圾进行三相分离的方法，可在避免传统机械挤压方式的基础上，实现对厨余垃圾的高效油分提取与水分去除，从而获得70-82％的脱油率，80-85％的脱水率。