The dtb crystallizer see images has an internal circulator, typically an axial flow mixer yellow pushing upwards in a draft tube while outside the. Radial flow stilling basins with baffle blocks article pdf available in canadian journal of civil engineering 164. Top 7 mistakes newbies make going solar avoid these for effective power harvesting from the sun duration. The gea turbulence with draft tube and baffle dtb crystallizer is the typical modern type of crystallizer in the industry. The draft tube and baffle type dtb crystallizer, is an elaborated mixed suspension mixed product removal design, which is suited for vacuum cooling and for.
This is a typical model of mixing tank crystallizer. Draft tube baffle dtb crystallizer swenson technology. They are normally used for producing large size crystalsread more. The multiple reference frame mrf method was used in the cfd simulation. Scaleup of a semibatch draft tube baffled crystallizer for. Powder baffle template if this is your first visit, be sure to check out the faq by clicking the link above. Optimization design for dtb industrial crystallizer of. A typical example is the dtb draft tube and baffle crystallizer, an idea of richard chisum bennett a swenson engineer and later president of swenson at the end of the 1950s.
Draft tube is mounted inside, allowing crystals which are growing to be sent efficiently to the evaporation. The draft tube and baffle type dtb crystallizer, is an elaborated mixed suspension mixed product removal design, which is suited for vacuum cooling and for processes having a moderate evaporation rate. A computational fluid dynamics cfd model was developed for the simulation and optimization of an existing continuous dtb crystallizer with kcl productivity of 0. Both the hexagonal grid and the tetrahedral grid were adopted to divide meshes in this industrial dtb crystallizer, and in total 866. Draft tube baffle crystallization physical sciences scribd. For superior control over particle size when excessive fine crystals are present, the swenson draft tube baffle dtb crystallizer has been proven highly effective. Since almost heat makeup is required, the arrangement is compact and hence initial investment is minimized. Organic and inorganic chemicals produced by the swenson draft tube baffle crystallizer include. The gea turbulence with draft tube and baffle crystallizer is the typical modern type of crystallizer in the industry. The computational fluid dynamics cfd commercial software ansys cfx10. Pdf design and hydrodynamic characterization of a draft tube. Accordingly, a draft tube baffle dtb crystallizer was scaled down from typical m3.
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