PROCESS FOR PRODUCING ENERGY, FEED MATERIAL AND FERTILIZER PRODUCTS FROM MANURE,申请号US2002026530-传众专利搜索

PROCESS FOR PRODUCING ENERGY, FEED MATERIAL AND FERTILIZER PRODUCTS FROM MANURE

申请公布号：WO2003018199(A2)

申请号：US2002026530

申请日期：2002.08.21

申请公布日期：2003.03.06

摘要：<p>A process for treating manure using anaerobic digestion includes introducing manure into a mixing vessel (14) containing a digester liquid and agitating and filtering a slurry (18) formed therefrom to remove substantially all water insoluble solids, thereby leaving a liquid containing ammonia and reactive organic materials. The liquid is routed to a heat exchanger (36) and ammonia is removed therefrom to produce a substantially ammonia-free liquid containing reactive organic materials, which is cooled and placed in a digester (58) containing anaerobic bacteria to convert the reactive organic materials in the liquid to biogas and to produce a digester liquid. The biogas is withdrawn and utilized to generate electricity, and a small amount of the digester liquid is withdrawn from the digester (58) and recycled back to the mixing vessel (14). The water insoluble solids and ammonia removed during the process may be converted to ruminant animal feed and concentrated liquid fertilizer, respectively.</p>