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Design og modellering af metanolanlæg til VEnzin-visionen Bilag

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17.128 SET_M<br />

U<strong>til</strong>ity component for setting the M-factor for a syngas used for production<br />

of a liquid fuel. The M-factor is defined in the equations below. If the Mfactor<br />

is 2 for methanol production it means that all the syngas in theory<br />

can be converted to methanol. The M-factor is defined as a control variable<br />

(ZC).<br />

17.128.1 Nodes<br />

Number of nodes: 3<br />

1. Gas in (Internal Number: -4) : any gas (I/V)<br />

2. Gas out (Internal Number: -4) : any gas (I/V)<br />

3. M-factor (Internal Number: 999) : control<br />

17.128.2 Equations<br />

Number of equations: 2<br />

1. Equal pressures: p1 = p2<br />

2. M-factor: ZC(1) = yH 2 −yCO 2<br />

yCO 2 +yCO<br />

17.128.3 Conditions<br />

m1 ˙ > 0<br />

m2 ˙ < 0<br />

yCO + yCO2 > 0<br />

17.128.4 Example<br />

struc set-M SET_M 611 612 900<br />

MEDIA 611 gas<br />

fluid gas N2 0.1 H2 0.6 CO 0.1 CO2 0.2<br />

addco m set-M 611 1 t set-M 611 50 p 611 1<br />

461

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