An interactive digital simulation and optimization package: FORTRAN programs MINISIM and OPTSIM

Roach, J. R.; Chow, Ee-Pan

doi:10.1177/003754977502500405

Cited by 6 publications

(1 citation statement)

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“…In this case we make use of the controller settings given in the Ph.D. Thesis of Lopez (1968). These values were used in a digital simulation program developed for the CDC 6400 computer (for interactive terminal use) by Roach and Chow (1975).…”

Section: Choice Of Time Scalementioning

confidence: 99%

Controllability of Process Systems. Application of Harriott's Index of Controllability

Jeffreson¹

1976

Ind. Eng. Chem. Fund.

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parallel lines are observed in Figure 9 for the values of Hf" of the hydrates of MgC1:; and FeC13. We assume, therefore, that the same relation also holds for the values of Gf" of the hydrates of MgCl2 and FeC13. Since Gf" for FeC13 is known, we are now able to calculate Gf" for the hydrates of FeC13. If data for Hf" and Gf" of other metal chlorides (e.g. BaC12, CaC12, and NiC12) and their hydrates are used as a basis of the analogy, the same results are obtained quantitatively. A plot of the values of Gf" (FeClYnHz) vs.[H20]/[FeC13] is a straight line. It appears therefore, that for all equilibria between the hydrates of FeC13, K = 1.On the basis of the data mentioned above, we calculated the fraction active catalyst, [FeC13-H20]/[FeC13] as a function of the degree of hydration, [H20]/[FeC13]. The results are given in Table IV. NomenclatureB = benzene cp = specific heat, J kg-' "C-' D = diffusivity of Clz dissolved in B, m2 s-l DCB = dichlorobenzene E , = activation energy, J kmol-I "C-I H = heat capacity of the flow reactor, J "C-' a d i l = heat of dilution, J kmol-I a h = heat of hydration, J kmol-' AHr = enthalpy change over a reaction, J kmol-I 121 = first-order reaction rate constant, s-l 122 = second-order reaction rate constant, s-l kmol-I m3 123 = third-order reaction rate constant, s-l kmold2 m6 k2* = r/[Clz][FeC13], i3-l kmol-l m3 k3* = r/[Cl2] [FeC13] [€3], s-l kmol-2 m6 MCB = monochlorobenzene Q = heat loss factor, . I OC-l s-l r = rate of reaction per unit volume, first chlorination step, r' = rate of reaction per unit volume, second chlorination step, T = temperature, "C or K kmol m-3 s-l kmol m-3 s-l T -To' = temperature difference measured over the flow t = time, s V , V' = volume, m3 [ ] = concentration, kmol m-3 0', O = mean residence time, s p = density of liquid, kg-3

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Section: Choice Of Time Scalementioning

confidence: 99%