High temperature pH control for sugar extraction and refining - Evaporation and boiling processes - Case Study
High Temperature Evaporation and Boiling Processes for pure sugar recrystallization
- High and Ultra High Temperature Resistant inline process pH sensors
- Excellent accuracy over repeated temperature cycling from batch process
- Specially engineered custom high temperature conductive polymer reference
- Minimum cleaning and calibration through non-porous solid state reference technology and rugged thick-wall hemispherical hysteresis resistant pH glass
A sugar refining company in Venezuela wanted to reduce the cleaning and recalibration frequency for their high temperature pH control system in their evaporation and boiling sugar refining processes. The frequent sensor deaths slowed down the production process efficiency due to the replacement sensor installation time. Milk of lime (Ca(OH)2) is added at various stages of the process to optimize yield and minimize energy consumption in the refining process, making pH control a critical factor to plant efficiency. The previously used sensors functioned properly for only short periods of time before the high temperature conditions and deposits from various calcium derivatives and viscous sugar syrup necessitated an aggressive chemical and mechanical cleaning, followed by a time consuming recalibration to ensure that the online pH sensor would provide an accurate reading. A lower maintenance alternative was required.