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HEMISKI Zbirka re{eni zada~i REAKTORI 3

HEMISKI Zbirka re{eni zada~i REAKTORI 3

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ODE Report (RKF45)<br />

[esti del. Industriski <strong>re</strong>aktori<br />

Diffe<strong>re</strong>ntial equations as ente<strong>re</strong>d by the user<br />

[1] d(Fa)/d(V) = -ra<br />

[2] d(Fb)/d(V) = -rb<br />

[3] d(Fc)/d(V) = rc<br />

[4] d(Fd)/d(V) = rd<br />

[5] d(Fw)/d(V) = rw<br />

[6] d(T)/d(V) = (633*102.564*(405-T)+A)/B<br />

Explicit equations as ente<strong>re</strong>d by the user<br />

[1] k1 = 1.81*(10^10)*exp(-11727/T)<br />

[2] k2 = 6.75*(10^9)*exp(-2104/T)<br />

[3] Fto = 12701<br />

[4] Ft = Fa+Fb+Fc+Fd+Fw+4914<br />

[5] Po = 16.65<br />

[6] To = 405<br />

[7] vo = Fto*0.082*To/Po<br />

[8] Fao = 5835<br />

[9] v = vo*T*Ft/To/Fto<br />

[10] Ca = Fa/v<br />

[11] Cb = Fb/v<br />

[12] r2 = k2*Ca*(Cb^3)<br />

[13] r1 = k1*Ca*(Cb^0.5)<br />

[14] rc = 2*r1<br />

[15] ra = 2*r1+r2/3<br />

[16] rb = r1+r2<br />

[17] rd = 2*r2/3<br />

[18] rw = rd<br />

[19] Cpm = 22.342+0.048116*T<br />

[20] Cpa = 11.839+0.11967*T-0.000036515*(T^2)<br />

[21] R = 8.314<br />

[22] Cpc = -3.201+0.19507*T-0.000077287*(T^2)<br />

[23] Cpb = 30.255+0.004207*T<br />

[24] Cpd = 45.369+0.008688*T<br />

[25] Cpw = 28.85+0.012055*T<br />

[26] B = Fa*Cpa+Fb*Cpb+Fc*Cpc+Fd*Cpd+Fw*Cpw+4914*Cpm<br />

[27] A = (212000*r1)+(441667*r2)<br />

[28] X = (Fao-Fa)/Fao<br />

O~igledno e, osobeno od grafi~kiot prikaz, deka prva<br />

odi <strong>re</strong>akcijata na sogoruvawe: nejzinata temperaturna zavisnost<br />

brzo se maskira so zavisnosta od koncentracijata na kislorodot.<br />

Nasproti ova, brzinata na oksidacija na etilenot e<br />

silna funkcija od temperaturata i e maksimalna kade {to e i<br />

maksimumot za temperaturata. Potoa opa|a poradi opa|aweto<br />

519

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