Empirical size-dependent growth rate models are studied for their effect on the population density distributions from a continuous, mixed suspension, mixed product removal (CMSMPR) crystallizer. The growth rate models and/or their corresponding population density distributions are examined for conti
Prediction and measurement of crystal size distributions for size-dependent growth
✍ Scribed by J. Garside; S.J. Jančić
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 816 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0009-2509
No coin nor oath required. For personal study only.
✦ Synopsis
PredIctIons of size datnbutlons, mean sizes and coefficients of varlatlon m mlxed-suspension mlxedproduct removal crystalhzers are presented for the case when crystal growth rate IS given by the expresston G = G" (1 + YL)~ as suggested by Abegg, Stevens and Larson (ASL) Crystal size dlstrlbutlons were measured at three scales of operation (1, 5 and 301) for a system which exhlblts size-dependent growth (potash alum/water) Expenmental median sizes were m good agreement with the predIctions and coefliclents of vanation slgruficantly greater than 50% were obtained The observed varlatkon of crystal growth rate with size however was only moderately well represented by the ASL equation
📜 SIMILAR VOLUMES
A new approach to crystal growth and dissolution, based on a population balance equation (PBE) similar to models of reversible chain polymerization, describes reversible solute addition to crystal surfaces. The PBE, in combination with a mass balance for solute, can be solved for mass moments of the
## Ah&ad -Tbe steadystatecrystalsizedistributioninawntinuousmixedsuspensionmixedproductremovalcrys~lizer has been measured during the precipitation of calcium oxalate trihydrate from aqueous solution. Two different instruments, both working over the size range 1.4-25 pm. were used, aCoulter Counte
## Ah&act -The phenomenon of size spreadmg of a narrow crystal-size dlstnbution (CSD) due to fluctuations 111 growth velocity was modeled usmg an eff ectlve number flux d&~s~vlty Use of tks tiusivity m the dunenslonless population balance descnbmg contmuous crystalhzer operation results m a second