Download - Group 5 Assignment 3
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Recovery Acetonitrile and Toluene for Siloxane Process
Equipment Design
Group 5061145004 Gökçe Bacaksız061145034 Çelenk Muratlı061145040 Aslıhan Palabıyık061145045 Gökay Şenol
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Introduction Siloxane ProcessWe were asked to design a
solvent seperation process for recycling Acetonitrile and Toluene solvents back into the siloxane polymerization unit. After polimerization process, there are three streams entering Recovery Unit.
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Feed Stream Information
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Recycle Stream Information
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Waste Stream Information
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Seperatıon Process Flow Sheet
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Discription of Design Equipmant
First Equipment : Mixer
To mix Feed A, Feed B, Feed C.
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Second Equipment: Distillation Column
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Siloxane seperation Operation Condition, 30 oC and 1
atmLight Key Split ( acetonitrile) :
0.99999Heavy Key Split ( siloxane ) : 10-5
72 stages R/Rdmin=1.4
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Third Equipment: Heat Exchanger
Cooling operation of distillate from 83 oC to 30 oC
Utility : 3345 kg/h Syltherm XLTCalculated area : 0.8 m2
Calculated U= 250 W/m2K
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Fourth Equipment: Extraction Column
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Acetonitrile extraction by water
Operation Condition, 30 oC and 1 atmAcetonitrile-Toluene-Water ternary
system equilibrium data [1]550 kg/h water3 StagesDiameter of column: 0.215 mLenght of column: 0.932 mType of column: RDC
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Properties for Extraction Column
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Fifth Equipment: Distillation Column
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To obtain toluene rich stream ( Recycle A)
Light Key Split ( acetonitrile) : 0.9999
Heavy Key Split ( toluene ) : 0.13Azeotrope mixture from Top of
column13 stages R/Rdmin=1.4
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Sixth Equipment: Pump
To sent extract to distillation columnPower: 2.5 WVolumetric flow rate: 0.442 m3/h Seventh Equipment: Pump
To sent feed stream to first distillation column
Power: 3.6 WVolumetric flow rate: 0.64 m3/h
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Eighth Equipment: Extraction Column
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Acetonitrile extraction by p-xylene
Operation Condition, 30 oC and 1 atm
Acetonitrile-p-xylene-Water ternary system equilibrium data [2]
2 StagesDiameter of column: 0.096 mLenght of column: 0.476 mType of column: Karr column
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Properties for Extraction Column
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Ninth Equipment: Pump
To sent extract to distillation column
Power: 17.6 WVolumetric flow rate: 3.12 m3/h
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Tenth Equipment: Distillation Column
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To seperate p-xylene from acetonitrile water mixture (p-xylene recycle)
Light Key Split ( acetonitrile) : 0.9999
Heavy Key Split ( p-xylene ) : 10-5
32 stages R/Rdmin=1.4
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Eleventh Equipment: Distillation Column
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To seperate water from acetonitrile (Recycle B)
Light Key Split ( Toluene) : 0.9999Heavy Key Split ( acetonitrile ) : 10-5
57 stages R/Rdmin=1.4
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Twelfth Equipment: PumpTo sent distillate to distillation columnPower: 4 WVolumetric flow rate: 0.7 m3/h
Thirteenth Equipment: MixerTo mix make-up p-xylene with recycle
p-xylene Forteenth Equipment: MixerTo mix all waste stream.
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Fifteenth Equipment: Heat ExchangerCooling of Recycle p-xylene from 111 oC to 30 oCUtility : 25810 kg/h Syltherm XLTCalculated area : 5 m2
Calculated U= 250 W/m2K Fifteenth Equipment: Heat ExchangerCooling of Recycle water from 87 oC to 30 oCUtility : 7401 kg/h Syltherm XLTCalculated area : 1.72 m2
Calculated U= 250 W/m2K Seventeenth Equipment: MixerTo mix make-up water with recycle water
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Acetonitrile = A Toluene = T Siloxane = S overall system Water = W P – xylene = P
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Overall Recycle Of Toluene And Acetonitrile
Recycle toluene mass flow rate = 315 kg/h
% recycle toluene = % 86,7 Recycle acetonitrile mass flow rate = 133
kg/h% recycle toluene = % 84
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Overall Stream Information
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