Studies on a Batch Vacuum Crystallizer
نویسندگان
چکیده
منابع مشابه
Determination of Crystal Growth Rate and Morphology of Barium Carbonate Crystals in a Semi-batch Crystallizer
A semi-batch crystallization system is used to determine growth kinetics and morphology of barium carbonate crystals, under a constant pH value and constant temperature in the various relative supersaturations. Results show that crystal growth rate satisfies a first-order kinetic expression at high relative supersaturation, while at relative supersaturation values lower than 3, the k...
متن کاملReal-Time Control of a Semi-Industrial Fed- Batch Evaporative Crystallizer Using Different Direct Optimization Strategies
This article presents a model-based control approach for optimal operation of a seeded fed-batch evaporative crystallizer. Various direct optimization strategies, namely, single shooting, multiple shooting, and simultaneous strategies, are used to examine real-time implementation of the control approach on a semi-industrial crystallizer. The dynamic optimizer utilizes a nonlinear moment model f...
متن کاملBatch-Processed Vacuum-Sealed Capacitive Pressure Sensors
This paper reports two multitransducer vacuumsealed capacitive barometric pressure sensors, one using singlelead and the other using multiple-leads to transfer the electrical signal out of the vacuum-sealed reference cavity. The first device operates with a resolution of 37 mtorr over a pressure range from 600 to 800 torr. The sensitivity is 27 fF/torr (3000 ppm/torr). The TCO at 750 torr is 39...
متن کاملdetermination of crystal growth rate and morphology of barium carbonate crystals in a semi-batch crystallizer
a semi-batch crystallization system is used to determine growth kinetics and morphology of barium carbonate crystals, under a constant ph value and constant temperature in the various relative supersaturations. results show that crystal growth rate satisfies a first-order kinetic expression at high relative supersaturation, while at relative supersaturation values lower than 3, the kinetic exp...
متن کاملStochastic Optimal Control of Seeded Batch Crystallizer Applying the Ito Process
Minimization of operation costs and the enhancement in product quality have been major concerns for all industrial processes. Predetermined operating conditions can help to achieve the goals for efficient production. These conditions can be determined using an optimal control analysis of batch crystallization process characterized by determination of the timevarying profiles for process paramet...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chemical engineering
سال: 1957
ISSN: 0375-9253
DOI: 10.1252/kakoronbunshu1953.21.652