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Precipitation of calcium carbonate in an internal loop Co2 - lift reactor
Języki publikacji
Abstrakty
Badano przebieg procesu precypitacji węglanu wapnia z roztworu wodorotlenku wapnia za pomocą dwutlenku węgla w reaktorze typu airlift. Zbadano wpływ czasu nagazowania, prędkości przepływu dwutlenku węgla i prędkości przepływu mieszaniny dwutlenku węgla i powietrza na wielkość otrzymywanych cząstek. W czasie procesu mierzono zmiany pH mieszaniny reakcyjnej oraz stopień zatrzymania gazu.
Calcium carbonate particles have been obtained in the reaction ofcalcium hydroxide with carbon dioxide m the intemal loop airlift reactor. Influence of the time of the proces, the velocity of carbon dioxide and the yelocity of carbon dioxide - air mixture on the precipitated particle diameter have been mvestigated. pH value and gaś hold-up in the reactor have been measured during precipitation.
Słowa kluczowe
Rocznik
Tom
Strony
73--84
Opis fizyczny
Bibliogr. 18 poz.
Twórcy
autor
autor
autor
autor
autor
- Politechnika Gdańska, Wydział Chemiczny, Katedra Inżynierii Chemicznej i Procesowej, ul. Narutowicza 11/12, 80-952 Gdańsk
Bibliografia
- [1] HOSTOMSKY J., JONES A. G., Calcium carbonate crystalization, aglomeration and form during continuous precipitation from solution. J. Phys., 1991, D24, 165.
- [2] LEBRON I., SUAREZ D. L., Kinetics and mechanisms of precipitation ofcalcite as affected by Pco2 and organic ligands at 25°C. Geochim. Cosmochim. Acta 1998, 63, 405.
- [3] SOHNEL O., MULLIN J. W., Precipitation of calcium carbonate. J. Crystal Growth 1982, 60, 239.
- [4] TAI C. Y., CHEN F.-B., Polymorphism of CaCO 3 precipitated in constant-composition environment. AlChE J., 1998, 44, 1790.
- [5] WACHI S., JONES A. G., Effect of gas-liquid mass transfer on crystal size distribution during the batch precipitation of calcium carbonate. Chem. Eng. Sci., 1991, 46, 3289.
- [6] AL-RASHED M. H, JONES A. G., CFD modelling of gas-liquid reactive precipitation. Chem. Eng, Sci., 1999, 54, 4779.
- [7] KANG S. H., LEE S. G., JUNG W. M., KIM M. C., KIM W.-S., CHOI C. K., FEIGELSON R. S., Effect of Taylor vortices on calcium carbonate crystalization by gas-liquid reaction. J. Crystal Growth 2003, 254,196.
- [8] JUNG W. M., KANG S. H., KIM W.-S., CHOI C. K., Particle morphology of calcium carbonate precipitated by gas-liquid reaction in a Couette-Taylor reactor. Chem. Eng. Sci., 2000, 55, 733.
- [9] RIGOPOULOS S., JONES A. G., Dynamic modelling of a bubble column for particle formation via gas-liquid reaction. Chem. Eng. Sci., 2001, 56, 6177.
- [10] WEN Y., XIANG L., JIN Y., Synthesis of plate-like calcium carbonate via carbonation route. Mater. Lett., 2003, 57, 2565.
- [11] CHEN P. C., TAI C. Y., LEE K., C., Morfology and growth rate of calcium carbonate crystals in a gas-liquid-solid reactive crystallizer. Chem. Eng. Sei., 1997, 52, 4171.
- [12] ZAUNER R., JONES A. G., On the influence of mixing on crystal precipitaion process - application of the seggregated feed model. Chem. Eng. Sci., 2002, 57, 821.
- [13] VAN LEEUWEN M. L. J., BRUINSMA 0. S. L., VAN ROSMALEN G. M., Influence of mixing on the product quality in precipitation. Chem. Eng. Sci., 1996, 51, 2595.
- [14] JTOBRACKE M., RASMUSON A. C., Influence of different scale of mixing in reaction crystallization. Chem. Eng. Sci., 2001, 56, 2459
- [15] PODHORECKI R., BAŁDYGA J., The use of a new model of micromixing for determination of crystal size in precipitation. Chem. Eng. Sci., 1983, 38, 79.
- [16] GoMEZ-DIAZ D., NAVAZA J. M., SANJURJO B., Analysis of mass transfer in the precipitation process of calcium carbonate using gas/liquid reaction. Chem. Eng. J., 2006, 116, 203.
- [17] BIELAŃSKl A., Podstawy chemii nieorganicznej, PWN, Warszawa 1987, 8 01.
- [18] WACHI S., JONES A. J., Mass transfer with chemical reaction and precipitation. Chem. Eng. Sci.,1991, 46, 1027.
Typ dokumentu
Bibliografia
Identyfikator YADDA
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