A ring dryer is used to dry potato starch. The output of the dryer (dried potato starch) we shall designate as C is 100 kg/h at a moisture content of 5% (the rest is dry matter). After the dryer, there is a branch in the conveyor carrying the dried starch that splits the product stream such that 10 kg/h is recycled back. This recycled dried starch product is mixed with the wet starch we shall designate as A (kg/h) before being fed to the ring dryer, to enhance or quicken the drying. The wet starch A has a moisture content of 70% (the rest is dry starch or dry matter). The amount of water evaporated in the dryer is designated as B (kg/h). Determine A and B.

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Basic Chemical Calculations (Process and Variables)

A basic chemical calculation involves the application of the law of chemical proportions to various reactions and material and energy balance calculations on various chemical processes. Basic chemical calculation helps students analyze various chemical processes and develop problem-solving skills. The chemical manufacturing processes are divided into unit operations involving physical changes of material and unit processes involving the chemical transformation of materials. For instance, fluid flow, heat transfer, and mass transfer are unit operations, and oxidation, reduction, and pyrolysis are unit processes.