ENGINEERING JOURNAL CHIANG MAI UNIVERSITY

Volume 25, No. 03, Month DECEMBER, Year 2018, Pages 88 - 101

Reduction of cycle time of sulfolane recovery process in cyanuric fluoride manufacturing in textile dye industry

Areeya Suwannikornkul and Napassavong Osothsilp

Abstract Download PDF

In this study, Response Surface Methodology (RSM) with the Box-Behnken design is employed to evaluate the effects of factors on the cycle time, salt content and sulfolane content including the optimal settings of these factors. The results from RSM analysis indicate that the optimal condition of sedimentation step is flow rate of 1,115 kilogram/hour, speed agitator of sedimentation tank of 0.5 round/minute and waiting time of sedimentation of 0 hours and the optimal condition of distillation step is pressure of 30 mbar, temperature of 180oC and speed agitator of vertical dryer of 20 round/minute. After improvement, the cycle time of sedimentation step is reduced from 12 hour/batch to 9.406 hour/batch. The cycle time of distillation step is reduced from 12 hour/batch to 9.6393 hour/batch. Moreover, the salt content and the sulfolane content correspond to the factory specification.

Keywords

Optimal Conditions, Response Surface Methodology, Box-Behnken, Cycle Time

---