Electrical precipitating apparatus

Claim 1

An electrical precipitating apparatus for removing suspended particles from a gas comprising: a housing having an opposed gas inlet and a gas outlet and defining a passageway for a stream of gas; the lower portion of said housing defining a hopper below said passageway with the lower edges of the gas inlet and gas outlet lying substantially in a common horizontal plane; an electrode system in said passageway including grounded collecting electrodes supported by rapping bars at both the top and bottom thereof said top supporting rapping bars resting on electrode ledge support means attached to said housing and said bottom supporting rapping bars also attached to said housing and extending to the plane defined by said lower edge of said gas inlet and outlet, said collecting electrodes extending longitudinally in spaced planes parallel to the direction of gas flow through said passageway, said electrode system further including high voltage discharge electrodes extending longitudinally in said passageway parallel with and transversely spaced from said collecting electrodes in successive relationship to provide spaced rows of discharge electrodes between the spaced rows of collecting electrodes, said discharge electrodes being spaced longitudinally of said gas passageway and creating charging fields extending transversely of the gas passageway in longitudinally spaced vertical planes, said discharge electrodes being further defined in that they are suspended from the upper portion of said housing by suspension means and maintained in their relative positions by weights secured to their lower ends said weights being separated and positively positioned with respect to one another by a spacing frame having a dividing slot therein; baffle means comprising a single flat sheet of material located equidistant from said gas inlet and said gas outlet supported within said housing transverse to said gas passageway and extending upwardly through said dividing slot in said discharge electrode spacing frame at least to the horizontal plane defined by the lower edges of the gas inlet and gas outlet, said apparatus being further defined in that the distance between said baffle means and said discharge electrode weights, and spacing frame is such that there is no arcing therebetween.