Diseño e implementacion de un sistema de control automático para el secador por atomización para la obtencion de un colorante natural a partir de la remolacha del laboratorio de procesos industriales.

Abstract

It was the design and implementation of an automatic control system for dryer spray, which is located in the laboratory of industrial processes in the Faculty of Sciences. So we star from the equation of energy balance of the process in dynamic State and Steady state, obtaining the block diagram and the transfer function with what was decided that kind of automation would be implemented to process. For the selection of process control variables was the diagnosis of the functionality of the equipment in search of flaws and impediments to the implementation of the control system. It this way automated process variables: temperature and percentage of volume of intake air. As controller was used a WIKA AC 85.02 controller ON-OFF , controlling the process by logic programming A TAD181 is used to measure temperature , / TADO88KLES30-A-ZKG/U as sensor /transmitter . To provide easier entry and monitoring of process variables implemented touchscreen HMI. For the adjustment of the control system were practices of validation of the team , which were drafted tests with extract of beet and maltodextrin in concentration of 50% w/w respectively. With the results of the practices are obtained yields of 0.33 kg of colouring / kg of extract . The recovery efficiency of solid rose 73% without control system to 92,06% with the controlled process. For the use of spray dryer, it is recommended to work at 120 °C .