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Homework Help: Chemical Engineering Mass Balance with matrix

  1. Feb 15, 2009 #1
    1. The problem statement, all variables and given/known data

    Ethane reacts with chlorine to make ethyl chloride and hydrogen chloride, and ethylene reacts with hydrogen chloride to form ethyl chloride.

    C2h6+ Cl2 > C2H5Cl + HCL
    C2H4 + HCl > C2H5Cl

    I post an image of flow chart and rest of description

    Based on my reading, all of unreacted ethane is removed along with ethyl chloride...

    2. Relevant equations

    C2h6+ Cl2 > C2H5Cl + HCL
    C2H4 + HCl > C2H5Cl

    3. The attempt at a solution

    I want to solve it in a matrix form, then do it in matlab. However I can not formulate my matrix....
    I can see ethane being limiting reagent

    m1 = feed stream contain ethane and ethylene
    R = recycle stream
    m3 = feed stream of Cl2
    m4 = ethyl chloride formed from 1st reaction (ethane + cl2)
    m5 = ethyl chloride formed from 2nd rxn (C2H4 + HCl > C2H5Cl)

    This is my attempt; I understand I will have to simplied it to matrix form first.

    for ethane
    0.5 m1 - 0.95 (.5 m1) - m4 = 0

    for ethylene
    x = molar ration of ethylene

    0.5 m1 + xR - 0.5 (0.5m1 + xR) -m5 =0

    Am I on the right track?

    My question is

    How do i determine the composition of R?

    Attached Files:

  2. jcsd
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