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Process Circuit Analysis 125

Table 3.4.4: Stream Properties - Formaldehyde-Synthesis Reactor

Composition (mole fraction)
Line Temperature Pressure Flow CH 3OH 0 2 H 2O HCHO N 2
No. °C atm Rate 3
kmol/h

1 500 1.8 1000 1.0 0 0 0 0
2 500 1.8 1950 0 0.210 0 0 0.790
3 500 1.8 2905 0.344 0.138 0 0 0.518
4 600 1.0 3305 0.061 0 0.242 0.242 0.455

To convert to Ib mol/h multiply by 2.205.

Table 3.4.5 Energy Balance Summary - Formaldehyde-Synthesis
Reactor

6
m 3 Ah 3 (10 kcal/h) a

m CP At Ah

HCHO
N 2 1505 (7.16) (-475) = -5.119
H 2O — — — —
400 (7.52) (-475) = -1 .429
0 2
CH 3OH 1000 (14.3) (-475) = -6.793
13.34

To convert to Btu/h multiply by 3.968.

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