Instituto Politecnico Naciona1.docx

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INSTITUTO POLITECNICO NACIONAL ESCUELA SUPERIOR DE INGENIERIA QUIMICA E INDUSTRIAS EXTRACTIVAS TERMODINAMICA DEL EQUILIBRIO DE FASES TAREA Alumno: Díaz Jiménez Said Profesor: Galicia Luna Luis Alejandro Grupo: 2IM30

Datos Tf (K) Tb (K) Tc (K) A B

n-Hexano Ciclohexano n-heptano 177.8 279.6 182.6 341.9 353.8 371.6 507.5 553.5 540.3 9.21647 9.14099 9.27321 2697.548 2771.221 2919.943

C -48.784 -50.287 -56.25 Rango T (°c) solucion ´-25 a 130 ´-17 a 145 ´0 a 165 Para una mezcla de n-Heptano, Ciclohexano y n-Heptano de composición X1=0.3

x2= 0.4

x3=0.3

Calcular: a) La presión de burbuja a 40°C Y 0.22 bar b) Las temperaturas de burbuja y rocio a 2.5 bar Para calcular las presiones de vapor de los componentes utilice la ecuación de Antoine: 𝐿𝑛 𝑃° = 𝐴 −

𝐵 𝑇+𝐶

donde T en K y P° en bar

Calculos a) PRESION DE BURBUJA datos: P1= 0.3726 Bar P2= 0.2462 Bar P3= 0.1233 Bar Presión de burbuja Formula P=x1P1+x2P2+x3P3 P=0.3(0.3726)+0.4(0.2462)+0.3(0.1233)= 0.247 PRESION DE ROCIO yi= (x1Pi)/P y1= 0.4520 y2=0.3983 y3= 0.1497 Formula 𝑃=

P=0.206 Bar

1 𝑦1 𝑦2 𝑦3 (𝑝1 + 𝑝2 + 𝑝3)

b) CALCULO DE TEMPERATURA TEMPERATURA DE BURBUJA Datos: X1=0.3

x2=0.4

T´= T+ ∆𝑇

x3=0.3

P=2.5 Bar

DONDE ∆𝑇 = 1𝐾

FORMULA. 𝑡´(𝑒´−𝑒) ) 𝑡(𝑒´−𝑒)+∆𝑡𝑒´

T nueva= 𝑡 (

𝑃=

PARA BURBUJA T P 300 382.5 386.9 387

P2 0.2184 3.1 3.45 3.45

1 𝑌1 𝑌2 𝑌3 (𝑃1 + 𝑃2 + 𝑃3 P3

0.1413 2.22 2.48 2.48

0.07065 1.38 1.56 1.56

Pcalculada %E 0.1421 -2.8676 2.23 2.49 -0.002 2.5 -0.000003

0.06 1.47 1.72 1.72

P CALCULADA Columna6 0.11 -3.07 2.15 -0.15 2.49 -0.00004 2.5 0.0000042

PARA ROCIO

T

P1 300 384.82 390.7 390.8

Columna1 T BURBUJA T ROCIO

P2 0.2184 3.28 3.77 3.77

Columna2 387 390.8

P3 0.14 2.35 2.72 2.72

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