Abstract: A damper assembly for use in an industrial duct used for venting contaminated gasses having particulate matter suspended therein. The damper assembly removes precipitate from the duct that was deposited by the contaminated gas and particulate matter. The damper assembly includes an articulating member which is movable between an open position and a closed position along a first axial direction. Opposing blades are disposed on opposite sides of the articulating member. Each of the opposing blades define a distal edge and are pivotable about axes that are substantially parallel to one another. A link couples each blade to the articulating member such that the motion from the articulating member is transfer to the blades. Each link is coupled to the blade between the distal edge and the respective parallel axis.

Abstract: A method of forming a modular collecting electrode for an electrostatic precipitator, including forming a plurality of horizontal collecting electrode sections, each section having vertical planar portions separated by vertical tubular portions, and wherein the method includes inserting interconnecting support elements into the tubular portions of adjacent collector electrode sections and compressing the interconnected electrode sections to form a rigid modular assembly. In one preferred embodiment, the method includes applying stiffening members across the ends of the planar portions of adjacent electrode sections for transmitting rapping forces through the assembled sections.

Abstract: A method and apparatus for controlling or removing mercury, mercury compounds and high molecular weight organics, if present, from a resource recovery exhaust stream by separately adding a carbonaceous char to the flue gas while it is still within the unit. The char can be produced in situ by adding a carbonaceous material and allowing it to thermally decompose.

Abstract: A method and apparatus for controlling or removing mercury, mercury compounds and high molecular weight organics, if present, from a waste incineration apparatus exhaust stream by separately adding a carbonaceous char to the flue gas while the flue gas is still within the unit. The char can be produced in situ by adding a carbonaceous material and allowing the carbonaceous material to thermally decompose.

Abstract: A method for removing sulfur dioxide out of a gas is provided. The sulfur dioxide contaminated gas is contacted with an aqueous solution or slurry that contains a reagent, such as sodium carbonate or sodium bicarbonate, in a reactor that may be a spray drier or a quench reactor and a gas having a diminished quantity of sulfur dioxide; unreacted reagent; sulfate reaction product, and which is at a temperature in the range of about 130 to 200 ° F. and a humidity in the range of 10 to 70 percent is produced. Particulate calcium hydroxide is blown into this gas through a device, such as dry venturi. The dry venturi removes aerosols out of the gas and helps ensure that the downstream filter cake is porous and non-tacky. The gas is then passed through a filtering device so that solids in the gas accumulate on the filter device, thus forming a filter cake. At least a portion of the sulfur dioxide in the gas is removed via passage of the gas through this filter cake.