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Page 53
allied
academies
WORLD CONGRESS ON SMART MATERIALS AND STRUCTURES
&
3
rd
International Conference on
POLYMER CHEMISTRY AND MATERIALS ENGINEERING
November 21-22, 2019 | Singapore
Joint event on
Materials Science and Nanotechnology | Volume: 03
Reaction kinetics in chemical engineering
Christo Boyadjiev
Institute of Chemical Engineering, Bulgaria
I
n the lecture is presented a theoretical analysis of the
role of the reaction kinetics in chemical engineering for
the solution of the main problems in the chemical industry
(biotechnology, heat energy), i.e. the optimal design of
new devices and the optimal control of active processes.
The thermodynamic and hydrodynamic approximations for
the modeling of the industrial process rates are presented
and analyzed.
The industrial processes are the result of reactions, i.e.
creation or disappearance of a substance and (or) heat as
a result of chemical and (or) physical processes and their
rate is determined by the reaction kinetics.
The reactions deviate the systems from the thermodynamic
equilibrium and as a result processes arise, who are trying
to restore that equilibrium. The rate of these processes can
be determined by Onsager's "linearity principle", where
the rate of the process depends linearly on the deviation
from the thermodynamic equilibrium.
The Onsager’s linearity coefficient can be determined
after solving the hydrodynamics, mass transfer and heat
transfer equations, where it is proportional to the mass
transfer (heat transfer) coefficient.
The relations between the Onsager’s linearity coefficient
and mass transfer coefficient are presented for different
processes.
e:
chr.boyadjiev@gmail.comMater Sci Nanotechnol, Volume: 03
Notes: