The objectives of this study were to investigate the kinetics of drying and gelatinisation,
and to develop mathematical model of superheated-steam fluidised bed drying of paddy
of paddy dried by superheated-steam fluidised-bed. The operating conditions were
carried out at the initial moisture contents of 25-45% dry basis, final moisture contents
of 16-20% dry basis, three bed heights of 10, 12.5 and 15 cm and superheated steam
temperatures of 150-170OC with a constant pressure of 106.1 kPa. The head rice yield,
white belly, whiteness and viscosity were properties that were used to determine
suitable drying condition for parboiled rice. The highest efficient conditions for
superheated-steam fluidized-bed drying of paddy are at superheated-steam temperature
of 170OC and bed depth of 10 cm under a given initial grain moisture content of 41-43%
dry basis and a constant superheated-steam velocity of 3 m/s with a final grain moisture
content not less than 18% dry basis.
The objectives of this study were to investigate the kinetics of drying and gelatinisation,
and to develop mathematical model of superheated-steam fluidised bed drying of paddy
of paddy dried by superheated-steam fluidised-bed. The operating conditions were
carried out at the initial moisture contents of 25-45% dry basis, final moisture contents
of 16-20% dry basis, three bed heights of 10, 12.5 and 15 cm and superheated steam
temperatures of 150-170OC with a constant pressure of 106.1 kPa. The head rice yield,
white belly, whiteness and viscosity were properties that were used to determine
suitable drying condition for parboiled rice. The highest efficient conditions for
superheated-steam fluidized-bed drying of paddy are at superheated-steam temperature
of 170OC and bed depth of 10 cm under a given initial grain moisture content of 41-43%
dry basis and a constant superheated-steam velocity of 3 m/s with a final grain moisture
content not less than 18% dry basis.
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