Abstract
Podbielniak Multi-Stage Counter-Current Centrifugal Extractor, its principle of operation, construction are explained.Applications in the petroleum refining processes are discussed, by presenting some cooperative development projects between the Podbielniak Inc.and Oil Refiners.One is the first Installation of this Contactor in the Furfural Extraction Plant of the Sun Oil Co., at Marcus Hook, Pa.Another case is the installation of a Podbielniak Petrozon (Capacity 200 gallons per minute) Contactor at the Deep Rock Oil Corp., Cushing, Oklahoma for the phenol extraction of lubricating oils.In these applica-tions, it is explained an exhaustive program of pilot plant tests on a laboratory model Podbielniak Contactor called PUP had been carried out, by which it was proved that this mechanical contactor could duplicate all results from the conventional counter-current packed tower with certain important advantages.