flash distillation A three-stage flash unit is being operated in a plant. The feed enters flash drum 2 (FD2). The vapour from FD2 is cooled to a two-phase mixture and flashed in FD1. The vapour from FD1 is taken out as a product, while the liquid from FD1 is heated to the operating temperature of FD2 and returned to FD2. The liquid from FD2 is heated to a two-phase mixture and introduced into FD3. The liquid stream from FD3 is taken out as a product, while the vapour from FD3 is cooled to the operating temperature of FD2 and returned to FD2. The feed is 100 kg/h liquid containing 40% ethanol and the rest being water. This feed is heated to 87 °C and enters FD2. The flow rate and the composition of the vapour stream leaving stage 1 is 50 kg/h and 0.75, respectively. All the flash units are operating at 1 kg/cm2 Calculate the following: a) Sketch the process. b) What is the operating temperature of stages 1 and 3? c) The flow rates and compositions of all streams leaving the three stages.

flash distillation A three-stage flash unit is being operated in a plant. The feed enters flash drum 2 (FD2). The vapour from FD2 is cooled to a two-phase mixture and flashed in FD1. The vapour from FD1 is taken out as a product, while the liquid from FD1 is heated to the operating temperature of FD2 and returned to FD2. The liquid from FD2 is heated to a two-phase mixture and introduced into FD3. The liquid stream from FD3 is taken out as a product, while the vapour from FD3 is cooled to the operating temperature of FD2 and returned to FD2. The feed is 100 kg/h liquid containing 40% ethanol and the rest being water. This feed is heated to 87 °C and enters FD2. The flow rate and the composition of the vapour stream leaving stage 1 is 50 kg/h and 0.75, respectively. All the flash units are operating at 1 kg/cm2 Calculate the following: a) Sketch the process. b) What is the operating temperature of stages 1 and 3? c) The flow rates and compositions of all streams leaving the three stages.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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