Procédé d'adsorption avec régénération électrothermique pour la capture du dioxyde de carbone en post-combustion

Abstract : The recovery of CO² from the fossil fuel power plant flue gas is a very important technical challenge. Adsorption processes can be applied to recover CO² from such dilute and voluminous flue gas (2x106 to 3x106 m3.h-1 for a 750 MW power plant, CO The recovery of CO² from the fossil fuel power plant flue gas is a very important technical challenge. Adsorption processes can be applied to recover CO² from such dilute and voluminous flue gas (2x106 to 3x106 m3.h-1 for a 750 MW power plant, CO2 Vol % = 12-15 %). Some existing processes like PSA and TSA have been used for VOCs separation. In pressure Swing Adsorption (PSA) the gas mixture flows through a packed bed of adsorbent at elevated pressure. The bed is regenerated by reducing the pressure. In Temperature Swing Adsorption (TSA), the bed is regenerated by raising its temperature. It is generally based on air heating. These two processes do not seem adapted for CO² recovery. The first one needs an increase of a very voluminous flue gas pressure. TSA based on air heating is not energitically efficient and it produces diluted CO². In this work, we aim to study a new adsorption process that permitts to: 1- treat voluminous flue gas at low pressure to recover most of the carbon dioxide that it contains 2- recover CO² with a high purity 3- reduce the energitic cost of the regeneration To do this work, three adsorption processes were examined experimentally and theoretically: Electrothermal Swing Adsorption (ESA), Vaccum Swing Adsorption (VSA) and coupled ESA-VSA. The first step of the work consisted in the choice of a performent adsorbent. Thus different solids were tested (active carbon, carbon molecular sieves, polymer adsorbents, zeolites...) and two adsorbents which were chosen (zeolite 5A and mixed matrix PDMS-active carbon). For the electrothermal regeneration, the adsorbents were heated indirectly by Joule effect. After having tested the three different ways of regeneration experimentally, different calculation modules were created using COMSOL Multiphysics, permitting adjust the kinetic and mass transfer parameters for both adsorption and regeneration Vol % = 12-15 %). Some existing processes like PSA and TSA have been used for VOCs separation. In pressure Swing Adsorption (PSA) the gas mixture flows through a packed bed of adsorbent at elevated pressure. The bed is regenerated by reducing the pressure. In Temperature Swing Adsorption (TSA), the bed is regenerated by raising its temperature. It is generally based on air heating. These two processes do not seem adapted for CO² recovery. The first one needs an increase of a very voluminous flue gas pressure. TSA based on air heating is not energitically efficient and it produces diluted CO². In this work, we aim to study a new adsorption process that permitts to: 1- treat voluminous flue gas at low pressure to recover most of the carbon dioxide that it contains 2- recover CO² with a high purity 3- reduce the energitic cost of the regeneration To do this work, three adsorption processes were examined experimentally and theoretically: Electrothermal Swing Adsorption (ESA), Vaccum Swing Adsorption (VSA) and coupled ESA-VSA. The first step of the work consisted in the choice of a performent adsorbent. Thus different solids were tested (active carbon, carbon molecular sieves, polymer adsorbents, zeolites...) and two adsorbents which were chosen (zeolite 5A and mixed matrix PDMS-active carbon). For the electrothermal regeneration, the adsorbents were heated indirectly by Joule effect. After having tested the three different ways of regeneration experimentally, different calculation modules were created using COMSOL Multiphysics, permitting adjust the kinetic and mass transfer parameters for both adsorption and regeneration
Document type :
Theses
Complete list of metadatas

Cited literature [40 references]  Display  Hide  Download

https://hal.univ-lorraine.fr/tel-01752989
Contributor : Thèses Ul <>
Submitted on : Thursday, March 29, 2018 - 2:03:53 PM
Last modification on : Thursday, January 31, 2019 - 1:27:52 AM

File

2008_ETTLILI_N.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : tel-01752989, version 1

Collections

Citation

Nabil Ettlili. Procédé d'adsorption avec régénération électrothermique pour la capture du dioxyde de carbone en post-combustion. Autre. Institut National Polytechnique de Lorraine, 2008. Français. ⟨NNT : 2008INPL017N⟩. ⟨tel-01752989⟩

Share

Metrics

Record views

52

Files downloads

1857