"mass transfer gas-liquid dispersion ejector loop reactors"@en . "2013-06-12+02:00"^^ . . . . . . "2014-12-31+01:00"^^ . "Novel concept of venturi loop reactors design. Method and fundamental data obtaining."@en . "2011-01-01+01:00"^^ . . . . "0"^^ . . . "3"^^ . "http://www.isvav.cz/projectDetail.do?rowId=GAP106/11/1865"^^ . "0"^^ . . "3"^^ . . . . "1"^^ . . . "GAP106/11/1865" . "2014-09-08+02:00"^^ . "Nov\u00E1 koncenpce n\u00E1vrhu reaktor\u016F s ejektorov\u00FDm distributorem plynu. Metodika a z\u00EDsk\u00E1n\u00ED z\u00E1kladn\u00EDch dat." . . "T\u00E9matem na\u0161eho v\u00FDzkumu je z\u00EDsk\u00E1v\u00E1n\u00ED teoretick\u00FDch a experiment\u00E1ln\u00EDch dat pro navrhov\u00E1n\u00ED kolon vybaven\u00FDch ejektorem pro distribuci plynu do kapaliny za \u00FA\u010Delem zv\u00FD\u0161en\u00ED rychlosti p\u0159estupu hmoty. V\u00FDhodou tohoto uspo\u0159\u00E1d\u00E1n\u00ED je velmi vysok\u00E1 rychlost absorpce v ejektoru ve srovn\u00E1n\u00ED se zbytkem za\u0159\u00EDzen\u00ED. St\u00E1vaj\u00EDc\u00ED metody n\u00E1vrhu t\u011Bchto za\u0159\u00EDzen\u00ED jsou zalo\u017Eeny na celkov\u00E9 rychlosti absorpce, a tedy ignoruj\u00ED rozd\u00EDln\u00E9 chov\u00E1n\u00ED ejektoru a kolony. V tomto projektu je navrhov\u00E1n nov\u00FD p\u0159\u00EDstup zalo\u017Een\u00FD na rozli\u0161en\u00ED chov\u00E1n\u00ED dvou zm\u00EDn\u011Bn\u00FDch \u010D\u00E1st\u00ED. Tento p\u0159\u00EDstup umo\u017En\u00ED eliminovat nejistotu p\u0159i n\u00E1vrhu, kter\u00E1 pou\u017Eit\u00EDm zpr\u016Fm\u011Brn\u011Bn\u00FDch hodnot vznik\u00E1. Vysok\u00E9 rychlosti p\u0159estupu hmoty v\u0161ak zt\u011B\u017Euj\u00ED z\u00EDsk\u00E1v\u00E1n\u00ED koeficient\u016F p\u0159estupu hmoty, proto\u017Ee prozat\u00EDm neexistuje spolehliv\u00E1 metoda pro m\u011B\u0159en\u00ED vysok\u00FDch hodnot kLa (a\u017E 20 1/s). Tento projekt si klade za c\u00EDl: vytvo\u0159en\u00ED po\u017Eadovan\u00E9 metody stanoven\u00ED kLa, sledov\u00E1n\u00ED vlivu viskozity vs\u00E1dky a geometrie ejektoru a n\u00E1vrh korelac\u00ED zalo\u017Een\u00FDch na odd\u011Blen\u00E9m modelov\u00E1n\u00ED ejektoru a kolony." . "Subject of our research in this field is development of theoretical and experimental data for design of units equipped with ejectors for dispersion of gas in liquid, intensifying the mass transfer. Advantage of this setup is very high absorption rates in the ejector body compared with the reactor vessel. The current design methods, based on integral transfer coefficients deduced from total conversion, ignore these differences. In the project, a new local modeling approach is proposed respecting the distributed character of the characteristic. This approach substantially reduces the errors induced by application of the global mass transfer data for the design of the devices. High absorption rates in ejector, however, hamper measurement of the mass transfer data, because a simple method for measurement of the high values of kLa in the ejectors (20 1/s) is missing. The aims are: development of such method for kLa measurement in both regions of the unit, to follow effects of liquid viscosity and ejector geometry, and design correlations based on the separated parameters approach."@en .