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Effect of Reactor Ambient Pressure on the Morphology of Spray Dried Magnesium Sulphate Powders
Author(s) -
Eslamian Morteza,
Ashgriz Nasser
Publication year - 2006
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450840510
Subject(s) - magnesium , atmospheric pressure , materials science , evaporation , nebulizer , analytical chemistry (journal) , nuclear chemistry , chemistry , metallurgy , physics , chromatography , thermodynamics , medicine , anesthesia , meteorology
The effect of reducing the reactor air pressure on the morphology of spray dried magnesium sulphate powders is investigated, experimentally. A reactor, capable of drying and pyrolyzing solution sprays at low pressures, is designed and manufactured. A vibrating mesh nebulizer is employed to generate the spray. Four different pressures, starting from 60 Torr to the atmospheric pressure, and two different reactor air temperatures of 130°C and 420°C, are considered. In addition, two different concentrations of magnesium sulphate solutions are tested. The results are explained based on the effect of reactor air pressure on the droplet evaporation rate.