Simulation and optimization of pressure swing distillation of methanol with countercurrent heat integration process

TLDR: In this paper, a pressure swing distillation with countercurrent heat integration process was adopted to substitute normal distillation process to save energy, which can save 255 percent of steam and 316 percent of cooling water.

Abstract: Different distillation processes of methanol-water mixture solution were evaluated and comparedA pressure swing distillation with countercurrent heat integration process was adopted to substitute normal distillation process to save energyThe pressure swing distillation process model was established,simulation calculation was done by steady state methodThe operation parameters of distillation separation system were discussed and optimized to minimize the energy consumptionThe results show that the pressure swing distillation with countercurrent process requires smaller pressure difference and can save 255 percent of steam and 316 percent of cooling water