Electrostatic apparatus for removing entrained particulate material from a gas stream
Removal of contaminants from gases Patent #: 4313739
ApplicationNo. 06/458055 filed on 01/14/1983
US Classes:95/74, With cleaning of collector electrode95/68, Including cleaning or regeneration of separating means (e.g., particulate bed filter, deflector, etc.)96/43, Fluid contacting means (e.g., suction means, etc.)96/65, Collecting electrode modifies gas flow96/77, Serially arranged ionizing and collecting or agglomerating fields96/99Dielectric material containing or covering
ExaminersPrimary: Prunner, Kathleen J.
Attorney, Agent or Firm
International ClassesB03C 3/14 (20060101)
B03C 3/04 (20060101)
AbstractAn electrostatic precipitator having improved collection efficiency for suspended particles having either high or low electrical resistivities is provided. The precipitator utilizes porous collecting surfaces which permit passage of gas while retaining suspended particles and means are provided to create an electrostatic field causing the particles to migrate toward the collecting surfaces. According to the invention, only a portion of the inlet gas flow to the precipitator, sufficient to provide aerodynamic forces to facilitate adherence of the particles to the collecting surface, is drawn through the porous collecting surfaces with the remainder of the gas flow being essentially parallel to such surfaces. The two gas streams are separately withdrawn and may be combined to provide a clean gas effluent. The invention also provides an improved method for removing suspended particles from gases by electrical precipitation.