Sorption-enhanced steam-methane reforming with simultaneous sequestration of CO 2 on fly ashes – Proof of concept and simulations for gas-solid-solid trickle flow reactor
Robert Cherbański , Eugeniusz Molga
AbstractApplicability of fly ashes (FA) as CO2 acceptors in the integrated sorption-enhanced steam-methane reforming (SESMR) process carried out to produce the hydrogen was investigated. In such an integrated process, despite of reversibility of employed reactions, an in-situ adsorption of CO2 makes it possible to achieve almost total conversion of methane and produced CO. Therefore, hydrogen of high purity can be obtained directly from a single-step adsorptive reactor. Fly ashes from power plants, as they are cheap waste, do not have to be regenerated after saturation with CO2 and can further be directly utilized, so economic efficiency of hydrogen production process can significantly be improved. Also ecological aspects of this process are ameliorated, because almost all CO2 emitted during such hydrogen production is permanently sequestrated. Series of experiments have been carried out in the laboratory tubular fixed packed bed reactor to successfully proof the proposed concept. Then, the gas-solid-solid trickle flow reactor (GSSTFR) has been proposed as a promising solution to carry out effectively the considered process in an industrial scale. The mathematical model of this reactor has been formulated, then with the results of performed simulations the practical indications for further experimental investigations have been obtained.
|Journal series||Chemical Engineering and Processing : Process Intensification, ISSN 0255-2701, (A 30 pkt)|
|Publication size in sheets||0.6|
|Keywords in English||CO2 sequestration, fly ashes (FA), gas-solid-solid trickle flow reactor (GSSTFR), reactive adsorption, sorption enhanced steam methane reforming (SESMR), reactor modelling|
|ASJC Classification||; ; ; ;|
|Score||= 30.0, 17-12-2019, ArticleFromJournal|
|Publication indicators||= 3; = 3; : 2018 = 1.236; : 2018 = 3.031 (2) - 2018=3.091 (5)|
|Citation count*||7 (2020-01-12)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.