Spray Dryer Design for Tomato Powder Production

In this investigation, the principles of designing spray dryers and the effect of process parameters on dryer performance were discussed. To obtain preliminary design data, from the results of previous research and experiments were carried out with a laboratory spray dryer on tomatoes were used. Following a large study, a pilot spray dryer equipped by a conical bottom chamber was designed with powder production capacity of 50 kg/h, evaporation capacity of 293 kgH2o/h and feed rate of 343 kg/h. The co-current rotary atomizer for feed spray and the cyclone for powder separation from exhaust air were selected. An indirect heater for heating the airflow and a backward-centrifuge fan to provide air flow rates were proposed.