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MODELING AND AUTOMATION OF ADSORPTION PROCESSES WITH CYCLICALLY CHANGING PRESSURE DURING THE SEPARATION OF GAS MIXTURES

Evgeny Akulinin

First published: 2017-06-20https://doi.org/10.5593/sgem2017/41/s19.067View metrics

Abstract

A mathematical model of the dynamics of pressure swing adsorption (PSA) process during the separation of multicomponent gas mixtures with the aim of producing hydrogen has been developed. The model allows to calculate the profiles of component concentrations (H2, CO2 and CO) and temperature in gas and solid phases, the pressure and velocity of the gas mixture along the height of the adsorbent depending on time. As a result of the computational experiments, the effect of changes in the temperature, composition, and pressure of the initial gas mixture on the purity, recovery, and temperature of product hydrogen at multiple duration periods of the adsorption stage was determined. The dynamics of the adsorption process of the gas mixture components and the character of the sorption and thermal fronts motion along the height of the adsorbent bed in the adsorber, as well as the relationship between the productivity of the PSA unit and the purity of the hydrogen produced were studied. The problem of optimization of the PSA process for producing hydrogen has been formulated and solved, the most appropriate structure of the system of automatic stabilization of the maximum oxygen concentration has been selected, and the algorithms and software of the automatic control system for the PSA process of separation of multicomponent gas mixtures have been developed.

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Publication details

Title
MODELING AND AUTOMATION OF ADSORPTION PROCESSES WITH CYCLICALLY CHANGING PRESSURE DURING THE SEPARATION OF GAS MIXTURES
Authors
Evgeny Akulinin
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Energy and Clean Technologies
Publisher
STEF92 Technology
Year
2017
Pages
527-534
SWS Citekey
Akulinin201719527534
ISSN
1314-2704
ISBN
978-619-7408-06-5
Language
en
Publication type
Conference Paper
Keywords
pressure swing adsorptionmulticomponent gas mixturehydrogen productionmathematical modeladaptive control.
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