Abstract: A process is disclosed for enhanced removal of SO.sub.2 and fly ash from flue gas by directing the flue gas and an SO.sub.2 sorbent through an electrostatic charger and then through a bag filter where electrostatically improved flue gas/sorbent contact occurs and where the suspended fly ash and sodium sulfate are removed and the gas stream is discharged.

Abstract: Improved support means are disclosed for a plurality of vertically arranged transversely oriented fill sheets or grids for direct contact cooling towers.

Abstract: Apparatus for removing and collecting dust from dust laden air includes a traveling manifold which travels through an upper clean-air chamber back and forth from one end of the baghouse to the other. Process air is directed upwardly and inwardly through the walls of an array of filter bags suspended in a lower chamber. At the upper ends of the filters bags are open mouths which communicate with the upper chamber. Pressurized reverse-direction air is injected from the traveling manifold into the mouths of the filter bags through openings in a flat cover plate. A bag support plate, located beneath the cover plate, separates the lower dust-laden air chamber from the upper clean-air chamber. The reverse air is injected successively into the mouths of a single row of filter bags for forcing air outwardly through the fabric walls of the filter bags to cause dust accumulated thereon to drop off and fall into the lower chamber.

Abstract: Parameters for optimum operation of a pulsed multisection electrostatic precipitator are disclosed: It has been discovered that superior particulate collection can be achieved by a combination of pulse and conventional DC voltages. The pulse rise time and decay time are made short enough so that adverse sparking conditions do not develop. The base voltage (conventional DC voltage) is adjusted in coordination with the superposed pulse characteristics (pulse voltage, pulse frequency and pulse shape) to maintain an average current through the collected dust layer just below or at that value which would cause electrical breakdown of the dust layer. Base voltage may actually be below normal corona starting voltage in some cases. The pulse produces instanteously very high ion densities and electric field strengths. In one design of precipitator, alternate sections are pulsed, with the other alternate sections functioning as collecting sections and merely having DC base voltage applied thereto.

Abstract: Amber glass is made by melting a soda-lime glass-forming batch in which at least 1 percent of the silica content is provided by lignite fly ash.