8608

7989

كارشناسي ارشد

فرايندهاي جداسازي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده مهندسي شيمي

1392

يازده،66ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

ارجمند مهرباني

محسن نصر اصفهاني

18/12/92

احمد محب، مسعود حق شناس فرد

مهندسي شيمي

ID7989

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

Modeling Simulation and Thermal Optimization of Thermally Coupled Distillation Columns Fatemeh Safari f safari@ce iut ac ir Date of Submission 2014 01 20 Department of Chemical Engineering IsfahanUniversity of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor Arjomand Mehrabani Arjomand@cc iut ac ir Abstract Distillation is one of the most important and common operations in chemical and petrochemical industries Despite all of its advantages distillation units are responsible for a price of energy make scientists try to find solutions to reduce energy consumption of distillation Heat integration of thermally coupled distillation column is one of the best methods Two columns with different pressures are used in this construction columns are integrated such that the condensing duty of high pressure column is used to boil the low pressure column This work provides a comparison between two simple columns with direct configuration and thermally coupled distillation column with direct sequence backward integration arrangement for separation of a water methanol and dimethyl ether mixture based on energy consumption and cost The influence of changing numbers of first and second column trays on heating and cooling rate of each column are investigated based on a developed mathematical model using conservation law of mass and energy and bubble point method The average relative error between calculated and industrial temperatures in some trays is about 0 996 According to simulation the thermally coupled construction saves energy about 50 more than two simple columns but increase about 6 capital cost Since steam is not used in high pressure columns in thermally coupled distillation operating cost decrease about 20 too Keywords Distillation Energy consumption Heat integration Thermally Coupled distillation

ارجمند مهرباني

محسن نصر اصفهاني

احمد محب، مسعود حق شناس فرد