Che calc

• Density = mass/volume
• SG=Density/Density Ref
• Density Ref=

  • 1 g/mL kg/L
  • 1000 kg/m3
  • 62.4 lb/ft3
• O2 theo = C + H/4 +S -O2
• O2 free = O2 x's + CO/2 +H2/2
• if conv =/= 100%

  O2 free = O2 x's + O2 unreacted
• C7H16

  Heptane
• C8H8

  Octane
• C16H34

  Cetane
• C11H10

  Methyl naphthalene
• Calderwood eqn

  C,T = 5.88+2.206(CV-0.094S)+0.0053 l 80-100VCM/FC l^1.55
• Dulong eqn

  CW=0.338C + 1.44 net H +0.094 S
• % x's = (x's/theo) x 100
• Proximate Analysis = VMFA


  VCM

  Moisture

  Fixed C

  Ash
• Modified Analysis = CMANSCNe


  C,T

  Moisture

  Ash

  N

  S

  CW

  Net H
• Used to solve CT

  Calderwood eqn
• Used to solve Net H

  Dulongs eqn
• For Proximate Analysis, Fixed C is solved by diff
• For Modified Analysis, CW is solved by diff
• For Ultimate Analysis,

  H= net H + (M+CW)(2/18)

  O= (M+CW) (16/18)
• Ultimate analysis: CHONAS


  C,T

  H

  O

  N

  Ash

  S
• Latent Heat of Condensation = 44 kJ/mol
• Density of cetane = 0.7751 g/mol
• Density of methylnaphthalene = 1.025 g/mol
• To solve theo mass of LR(kg)

  use mass of ER (stoic ratio)(MW of LR), vice versa
• Solve for LR/ER

  (mass of reactant/ MW) ÷ Stoic Coeff of reactant
• Degree of conversion (xa) * reacted mol is not given

  NaoXa/Nao
• Degree of conversion (xa) * reacted mol is given

  Na=Nao (1-Xa)
• To solve theo mass of LR(mol)


  mol ER (stoic rato)
• Solve for reactant in feed (R,F)

  R,F= R, unreacted + R,reacted
• "max conversion" is Reactant, theo
• w/ chem reaxn & recycle: OMB

  OMB: in - out - consumption = 0


  100% conv = OMB: F- f(F+R)=0

  
  

  not 100% conv = OMB: (F+R) - R - f(F+R)=0
• supp = theo + x's

  shortcut: supp = theo (1+x's)
• Convert db to wb = db/1+db