METHOD FOR USING THE ENERGY POTENTIAL OF PRODUCTS OBTAINED BY CLEANING BARDA IN THE PROCESS OF PRODUCING BIOETHANOL, AND EQUIPMENT FOR IMPLEMENTING THIS METHOD

摘要

The invention relates to the method of exploiting energy from ethanol production stillage purification, the essence of which consists in drying the solid wastes from decanting centrifuge of stillage together with subsequent sediments, in particular the protein sediments from centrifuges for protein sediments dewatering. The liquid part from sedimentation separation of protein sediments then undergoes anaerobic preliminary purification and final aerobic purification, the result of which is producing of a mixture of chemical sediments from precipitation of nitrogenous substances in the form of ammonium magnesium phosphate, anaerobic and aerobic waste sludge and also of chemical sediments from final precipitation of superfluous phosphor to ferric phosphate, which are then, after separation in decanting centrifuges, also dried off together with the previous dewatered stillage and protein sediments to 40-90% dried residue. After drying, this mixture is subjected to combustion with or without producing the granulated pellets in boilers with special regime of spreading the mixture, shifting of the mixture and temperature regime of the boiler while producing medium-pressure or high-pressure steam, which then either serves in the case of the high-pressure steam also for generating of electric power. Furthermore, the solution relates to the equipment for implementation of this method.