In this challenge we will design and optimize an energy efficient heat exchanger network for a plant that can produce et
Posted: Tue May 17, 2022 9:13 am
In this challenge we will design and optimize an energy
efficient heat exchanger network for a plant that can produce
ethylene oxide from ethanol. Ethanol can be fermented from plants,
waste or produced from carbon monoxide – hence supplying ethylene
oxide without the need for oil or natural gas.
The process flow diagram is as follows:
The 1 pass conversion of ethanol in the ethanol reactor is 80%
by mole and the overall conversion of
ethylene in the ethylene oxide reactor can be approximated as 100%.
I.e. assume that the second
reaction goes to completion (consumes all the ethylene fed to
it).
Use the information given about the conversion in every reactor and
the stream compositions in the
table above to solve for the molar flow rate in every stream.
EtOH reactor 200 EtOx reactor 20 4 390 200 450 309 ! 390 Distil 80 100 * 290 80 20 E. 90 ron 200CC E Flash 100 90 30 > The reactions are the following. The (endothermic) dehydration ethanol in the EtOH Reactor: C2H60 - C2H4 + H20 (R1) The (exothermic) catalytic oxidation of ethylene in the Etox Reactor. 7C2H4 +602 + 6C,H,0 + 2H,0 + 200, (R2) The streams that needs to be heated are labelled blue, and those to be cooled are labelled red. The black numbers indicate the inlet and outlet temperatures in degrees Celsius. The following stream flow rates and compositions are known (the phase specified is prior to heating and cooling - let Aspen calculate the phase equilibrium after you did the specified heating and cooling): - Stream ID Composition (mole fractions) Flow rate (kmol/hr) 2500 1 2 3 4 5 1000 v+ ماما امر | | Pressure Phase (bar) 1 V 1 V 1 1 1 1 V 1 V 1 V 1 V 1 Same molar composition as stream 1 1.0 water 0.95 ethanol;0.05 water 0.95 ethanol ; 0.05 water 1.0 ethylene 0.78 nitrogen; 0.21 oxygen ; 0.01 argon 4600 6 7 8 9
efficient heat exchanger network for a plant that can produce
ethylene oxide from ethanol. Ethanol can be fermented from plants,
waste or produced from carbon monoxide – hence supplying ethylene
oxide without the need for oil or natural gas.
The process flow diagram is as follows:
- In This Challenge We Will Design And Optimize An Energy Efficient Heat Exchanger Network For A Plant That Can Produce Et 1 (66.73 KiB) Viewed 81 times
by mole and the overall conversion of
ethylene in the ethylene oxide reactor can be approximated as 100%.
I.e. assume that the second
reaction goes to completion (consumes all the ethylene fed to
it).
Use the information given about the conversion in every reactor and
the stream compositions in the
table above to solve for the molar flow rate in every stream.
EtOH reactor 200 EtOx reactor 20 4 390 200 450 309 ! 390 Distil 80 100 * 290 80 20 E. 90 ron 200CC E Flash 100 90 30 > The reactions are the following. The (endothermic) dehydration ethanol in the EtOH Reactor: C2H60 - C2H4 + H20 (R1) The (exothermic) catalytic oxidation of ethylene in the Etox Reactor. 7C2H4 +602 + 6C,H,0 + 2H,0 + 200, (R2) The streams that needs to be heated are labelled blue, and those to be cooled are labelled red. The black numbers indicate the inlet and outlet temperatures in degrees Celsius. The following stream flow rates and compositions are known (the phase specified is prior to heating and cooling - let Aspen calculate the phase equilibrium after you did the specified heating and cooling): - Stream ID Composition (mole fractions) Flow rate (kmol/hr) 2500 1 2 3 4 5 1000 v+ ماما امر | | Pressure Phase (bar) 1 V 1 V 1 1 1 1 V 1 V 1 V 1 V 1 Same molar composition as stream 1 1.0 water 0.95 ethanol;0.05 water 0.95 ethanol ; 0.05 water 1.0 ethylene 0.78 nitrogen; 0.21 oxygen ; 0.01 argon 4600 6 7 8 9