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Использование уравнений состояния для моделирования свойств аммиака, углекислого газа и воды PowerPoint PPT Presentation


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Использование уравнений состояния для моделирования свойств аммиака, углекислого газа и воды. Синтез карбамида. Плав синтеза: p =150-200 атм ; t =160-220 0 C. Жидкая фаза (реакция Базарова). Газовая фаза. NH 3 ( ж) = NH 3 ( г) CO 2 ( ж) = CO 2 ( г) H 2 O( ж)= H 2 O( г).

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Использование уравнений состояния для моделирования свойств аммиака, углекислого газа и воды

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5738703

,


5738703

: p=150-200 ; t=160-2200C

( )

NH3() = NH3()

CO2() = CO2()

H2O()= H2O()

2NH3() + CO2() = NH2COONH4()

NH2COONH4() = (NH2)2CO() + H2O()

  • :

  • G (eUNIQUAC)

  • :

    • SR-POLAR

    • RKS

    • --

  • Nakamura

( 20% )

(NH3 H2O)


5738703

--

SR-POLAR (

RKS Redlich-Kwong-Soave)

Schwartzentruber J., Renon H., Watanasiri S. // Fluid Phase Equilibria. 1989. V. 52. P. 127-134.

Mathias P.M. // Ind. Eng. Chem. Process Des. Dev. 1983. V. 22. P. 385-391.

Soave G. // Chem. Eng. Sci. 1972. V. 27. P. 1196-1203.

Aspen Plus Urea Synthesis Loop Model. Version Number: 7.0. July 2008.


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SR-POLAR

] Schwartzentruber J., Renon H. Extension of UNIFAC to High Pressures and Temperatures by the use of a Cubic equation of State // I&EC Research. 1989. V. 28. P.1049-1055.


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SR-POLAR:

Standard relative deviation: 0.024

Maximal relative deviation: 0.145

p: -3.107330802894017e+00 Tc: 6.473000000000000e+02

Pc: 2.211924750000000e+02 w: 4.966776667415789e+00

p2: -3.462848138258257e+00 p3: 2.041288317402877e+00

W. Wagner, H.-J. Kretzschmar, International Stream Tables. Properties of Water and Stream Based on the Industrial Formulation IAPWS-IF97, 2nd ed. Springer, Berlin, Heidelberg, 2008.


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SR-POLAR:

N.B. Vargaftik. Tables of the Thermophysical Properties of Liquids and Gases. Washington-London. Hemisphere Publ. Corp., 1975.

. . , . . , . . , . . . . . 1978


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Nakamura

Nakamura R. Breedveld G.J.F., Prauznits J.M. // Ind. Eng. Chem. Proc. Des. Dev. 1976. V. 15(4). P. 557-565.


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t=150-300OC

p=1-280

.

( )

=+2,

.., .., .. , , [ ]


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