Static air separator

The separation characteristic of the static air separator can be varied in several... 

The static air separator or classifier is so called because it has no moving mechanical parts. It is used chiefly in conjunction with air-swept grinding plants (operating with tube mills or roller mills). The material to be classified is carried along in a stream of air from the mill and enters the separator from below. It flows between the conical outer casing and the inner separating cone. As a result of the... 

Calcination. After crystallization, the solid contains a substantial amount of organic base which must be removed to give the catalytically active material. The removal can be achieved only by decomposition, and calcination is the most common process used. But calcination at temperatures insufficient to bum all the organic or in-static air generates less active catalysts (Martens et al., 1993). On the other hand, calcination without temperature control can cause the sudden combustion of the organic material, and, at the high temperatures that are reached, the Tilv separates from the crystalline structure to form Ti02. 

Microscopic studies of blown or atomized aluminum reveal that no single aluminum product on the US. market is ideal. The author made studies of air separated aluminums and found the following factors to produce empirically better effects. Aluminum products were separated in a forty foot trough by air flow separation. Microscopic examination was used as a quality of separation control. Aluminums used for the study were Alcoa 101, 123 and Reynolds 120, all circa 1968. Ten pound batches of each were separated into six size ranges. Various formulas were made up with each cut, and known blends of aluminum cuts were similarly made into stars and fired as comets and in 3-inch shells. Samples of all star batches were burned statically. Microscopic examinations of residues of spritz debris collected on plastic film were used to evaluate combustion efficiency. 

The circulating air separator (as a generic designation) differs from the static separator and the bladed rotor separator in some important respects ... 

In air separation, radial turbines are applied. The gas to be expanded enters the turbine in a radial direction and is directed via a ring of static nozzles to the impeller wheel inside of the ring. On flowing through the nozzles, the gas velocity increases and thus the static pressure is already reduced by about 50% and converted into kinetic energy. Then the gas molecules hit the impeller blades and are ejected from the impeller s eye in an axial direction. Since there is a static... 

When the temperature of an air jet attached to the ceiling is lower than the temperature of the ambient air, the jet will remain attached to the ceiling until the downward buoyant force becomes greater than the upward static pressure (Coanda force). At this point, the jet separates from the ceiling and... 

Since the end product is to be useful heat, there is an opportunity with heat pump compressors to use a drive motor which will contribute to this. The internal combustion engine is used for some drives, adding its radiator heat to the load, and at a higher temperature than the refrigerant condenser can provide. As the installation is static, and required to run for comparatively long times without attention, the ideal fuel is natural gas. Compressor and drive assemblies must be robust to withstand the extra vibration, and should be separate from the rest of the circuit. Engine combustion air intakes must be from outside the plantroom and possible refrigerant leaks. Steam drives have also been used. 

Many mechanical separations involve the movement of solid particles or liquid drops through a fluid. The fluid may be gas or liquid, and it may be flowing or static. As some assortment of examples mention may be made of the removal of dust and fumes from air or flue gas, the removal of solids from liquid wastes to permit discharge into public domain, and of the recovery of acid mists from an acid plant gaseous wastes. 

The product is separated from traces of amine and an unidentified nonvolatile oil by resubliming the trimethylindium, under static vacuum, from one storage bulb to another through a U tube with gentle warming from a hot-air gun. Yield 71 g (97% based on adduct, 89% based on indium trichloride). 

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