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This Calculator performs Distillation Column design using Fenske-Underwood-Gilliland (FUG) shortcut method. |
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To obtain a higher confidence solution a simulation in commercial simulator can be performed with these calculated |
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values as input. (It will converge readily with these values.) |
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Use illustration: |
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Problem- |
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Recover from a 200 kmole/h feed containing 50mol% ethane and 50mol% propane as a liquid bubblepoint feed 90% |
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of ethane and 10% propane in distillate |
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Procedure- |
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1. Select ethane from comp1 dropdownlist, enter 0.5 in xf1 and LK(light key). in comp2 dropdownlist select propane |
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and enter 0.5 in xf2 and HK(heavy Key) (You need to specify light Key (LK) and heavier key (HK) and specify |
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whether others are LLK or HHK etc. (Use Vapor Pressure to determine which is LK, HK etc.)) |
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Enter q=1 and feed viscosity of 0.06 mPa.s. Feed as 200 moles/hr |
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In recovery enter 90 for comp1 and 10 for comp2. |
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2. Select condensor temperature based on coolant available. |
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Enter condensor temp based on coolant available, 0 C in our case. |
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3. Press calculate and read the design values. Actual reflux is your decision based on whether cost of coolant for |
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more relux rate or cost of adding additional trays is lesser. Both improve seperation. Typically R=1.2*Rmin. |
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This is the shortcut design of the column. |
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You can use these values to simulate in a commercial simulator and obtain a higher confidence solution without |
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iterating with many options. |