But all my input data is in mole fractions only here. I need to define Feed stream from Excel based UI, but I can not send mole fractions as feed composition. Issue is I am operating Steady State CHEMCAD Centrifugal Compressor from Excel based User Interface and Limitation on Chemcad side is that when it is integrated with Excel, model feed stream can only accept Component Moles flows and NO Weight fractions or Volume fractions or Mole Fractions also. If I do not consider it accurately, my feed moles calculation will go wrong.
For these components, how to estimate the molecular weight ? E g C6 to C8 mixture components in Ethylene Plant feed, then they call it fuel oil cut components in Ethylene Plant feed. For which I gave considered mol weight as 80.įor some components, thet are not pure components and their definition is not complete in all senses. I have Methyl Acetylene and Propadiene MAPD as A component. I will explain my issue in more details for everyone to understand. : Individual component mole fraction multiplied by Total Feed molar flows to get individual mole flows I use this feed molar flow and I have comp mole fraction already and then what i do is I use this final average molecular weight and divide total flow of feed in MTPH by this molecular weight and then i get feed molar flow here.
MY present approach is first evaluate average molecular weight of entire feed by multiplying individual component mole fractions to its component molecular weight and then taking sumproduct to get average molecular weight. I need to do this as my simulation software does not accept mole fractions for components and instead it accepts only component mole flows Kmol/hr etc. How can I convert these component mole fractions to mole flows for all component. I have Feed Flow in MTPH, Feed Mole Fractions for all feed components ,etc. I need to develop CGC flowsheet in simulator and it will be steady state model only. I have Ethylene Plant Charged Gas Compressor System for Steady State Process Simulation in some preliminary engineering software.
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