Considerations about the evolution of steam formation in discontinuous evaporating crystallizers by utilizing a camera

Steam formation in discontinuous evaporating crystallizers experiences several transitions throughout the progress of a strike due to the applied processing methods. A microscope detects steam bubbles 0.3 m above the calandria at the wall of a typical batch evaporating crystallizer. The optical results of 15 strikes are analyzed and evaluated in the respective process control system data context. Excessive amounts of bubbles are only detected during the early stages of a strike, which agrees with the general assessment of the evaporation within the evaporating crystallizer regarding an upwards-moving steam formation front. Vapor contents close to PCS data estimations and literature reports are determined incidentally. The suitable utilization of cameras can offer more comprehensive information about the state of the process than is currently available.