Scrubber specific productivity

U [cc,z r, D, .., U [ a,z r ) (Geometrical similarity). It is visible that the criterion C is defined by physical parametres of a dust-laden gas mix and specific productivity of a scrubber. The criterionC is defined by sizes of a conic air swirler and a slope of its guide vanes on which the relationship between tangential and radial speeds, and consequently, a relationship of an inertial force and force of resistance depends. 

The system described here uses hot combustion gases from a fluidized-bed combustion cell in conjunction with a package water-tube boiler for steam production. The combustion gases are then released to the atmosphere. More recent designs have employed venturi scrubbers for gas cleanup when necessary. However, the final decision on a gas cleanup method depends on the specific regulations for each location. 

This describes the specific curing behavior of fly ash, cement dusts, and certain steel works byproducts, is based on the reaction of silicate and aluminous materials with quick lime. Here too, as with the above-mentioned additives, a higher pH causes the precipitation of metal hydroxides and carbonates. The British SEALOSAFE-Process uses fly-ash plus Portland cement, or alkali silicate glass and Fe/Al hydroxides to solidify a broad spectrum of wastes. In the POZ-O-TEC-Process, the wastes from flue gas scrubbers are solidified together with grate ash and fly-ash. The pozzolanic processes have the advantage of excellent longterm stability however, the products solidify rather slowly and are susceptible to acids. 

The reaction is fast [81], and the absorption process benefits from this until the ferrous ion concentration is nearly depleted. Usually, chlorine is sparged into a pool of FeCh solution. The reaction tank therefore must be vented to a scrubber to prevent the release of chlorine to the atmosphere. FRP of the proper grade again is satisfactory, and again the specific gravity of the product is quite high (1.4—1.5, depending on concentration). 

This decomposition will, if necessary, take place relatively slowly at quite low temperatures, with the production of the beryllium fluoride in a finely divided form. The furnace used, however, is designed specifically to allow decomposition primarily above the melting-point (797°C) so that the coarse product resulting can be handled more easily and is less subject to hydrolysis. The furnace hearth is constructed of graphite, over which the decomposing ammonium fluorberyllate is fed continuously at a rate of about 35 Ib/hr. The fused beryllium fluoride is tapped off in 60 to 80 lb batches at a temperature of 900°C. The ammonium fluoride and decomposition products (ammonia and hydrofluoric acid) are led away from the furnace to condensers and scrubbers for recovery. 

COS removal. Propylene produced from cracking plants will contain carbonyl sulfide (COS). When treating propylene to produce a polymer-grade product, one has to meet a stringent sulfur specification. If COS is reported in propylene product, raise the temperature of lean amine to the scrubber 10°F. This usually eliminates the problem. 

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