Modeling of Heat and Mass Transfer, Adsorption and Desorption of Hydrocarbons in Nanoporous Zeolite-Catalisators of Neutralizing Systems of Exhaust Gases

2018 ◽  
Vol 50 (4) ◽  
pp. 1-12
Author(s):  
Mikhail R. Petryk ◽  
Alexander N. Khimich ◽  
Mariya M. Petryk ◽  
Jack Fraissard
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Adsorption And Desorption ◽  
Exhaust Gases

Characterising the Differences between the Adsorption and Desorption Processes in a Desiccant Layer by Detailed Numerical Modelling

2012 ◽  
Vol 326-328 ◽  
pp. 690-695
Author(s):  
C.R. Ruivo ◽  
J.J. Costa ◽  
A.R. Figueiredo
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Channel Wall ◽  
Water Adsorption ◽  
Sorption Isotherms ◽  
Transfer Coefficients ◽  
Desorption Process ◽  
Adsorption And Desorption ◽  
Adsorption Desorption ◽  
Simultaneous Heat

In this paper, the performance of a channel element of a hygroscopic matrix is evaluated by detailed numerical modeling. The adopted physical model takes into account the gas-side and solid-side resistances to heat and mass transfer, as well as the simultaneous heat and mass transfer occurring simultaneously with the water adsorption/desorption process in the desiccant porous channel wall domain. The desiccant medium is silica gel RD, the equilibrium being characterized by sorption isotherms. Appropriate convective transfer coefficients are taken into account for the calculation of the heat and mass transfer phenomena between the airflow and the channel wall. The response of the channel element to a step change in the airflow states is simulated, the results enabling the investigation of some differences between the adsorption and desorption processes.

scholarly journals Development of water deaeration technologies with boiler exhaust gases

2021 ◽  
Vol 2039 (1) ◽  
pp. 012036
Author(s):  
M M Zamaleev ◽  
V N Kovalnogov ◽  
R I Kamalova ◽  
O V Pazushkina
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Power Plants ◽  
Thermal Power ◽  
Transfer Efficiency ◽  
Thermal Power Plants ◽  
Exhaust Gases ◽  
Mass Transfer Efficiency ◽  
The Media ◽  
Water Deaeration

Abstract The calculation of the heat and mass transfer efficiency of the proposed technology for deaeration of water by the exhaust gases of a gas-proof boiler in deaerators of serial design has been performed. The conditions and criterial values of the media consumption in the apparatus have been studied. It is shown that the technology can be successfully applied in operating thermal power plants.

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