Abstract: This invention relates to the part of a tubular electrostatic precipitator for a vertical gas flow, comprising a bank of circular cylindrical collecting electrodes of plastic material, at least one upper tube sheet, at least one lower tube sheet, and a cylindrical housing. The housing consists of a steel shell, which is provided with an acid-resisting coating at least on its inside surface, the tube sheets consist of plastic meterial, the circular cylindrical collecting electrodes are fixed by welding in the upper tube sheet, and the entire free space which is available between the tube sheets outside the collecting electrodes is filled with foamed plastic material as far as to the inside surface of the housing.

Abstract: A diffuser assembly for transition pieces between gas-processing apparatus and a gas line, e.g. between an inlet duct and an electrostatic precipitator, comprises a support structure in the form of an array of mutually parallel profile bars. The array has edge bars with inwardly open channels and the intermediate bars are I-profiles. The bars are spanned by perforated plates having edges formed with rectangular profiles received in the channels into which a plug connector can be fitted to retain a plate in contiguous relation within and between the profiled structural shapes. The resulting planar assembly is introduced into a diffuser between a gas duct and the processing apparatus.

Abstract: A process for producing a honeycomb of synthetic-resin material for use as the collector electrode of an electrostatic precipitator comprises assembling the honeycomb from plate strips having the cross section of sheet piling and made by hot molding from unsaturated polyester resins, glass fibers and nonwoven external covering fabrics of synthetic fiber. The honeycomb structure, which has a hexagonal ducts, is then provided with a shell of glass fiber and polyester resin by a winding operation. Conductive pigments, such as carbon and metal oxides, and flame-inhibiting additives can be incorporated in the unsaturated polyester resin.