Improvement of Post-combustion Carbon Capture Process in Retrofit Case

Tibor Nagy, Stefania Moioli, Stefano Langé, Laura A. Pellegrini, P. Mizsey

Research output: Contribution to journalConference article

5 Citations (Scopus)

Abstract

Carbon dioxide emission, one of the core cause of global warming and other threats of nonreversible environmental effects, is in focus today. Among the several methods of CO2 emission mitigation, post-combustion carbon capture (PCC), based on absorberdesorber systems with amine absorbents, is one of the promising alternatives. The major anthropogenic CO2 point sources are power plants, natural gas extraction units, oil refineries, cement factories, biogas plants, etc. As these CO2 sources can be treated with a PCC absorber-desorber system, then these two units should cope with various conditions. To maintain a desired high removal efficiency, the capture unit must work in flexible conditions. The aim of this study is to evaluate the influence of the extent of the absorption of carbon dioxide on the overall performance of the acid gas removal process, considering that, generally, as the amount of removed CO2 increases, the separation becomes more challenging. In this work a verified computer based process model for the absorber-desorber system is used. Aspen Plus® professional flowsheet simulator is used for this purpose. Attention is paid on the proper operating parameters of a PCC absorber-desorber system for the case of increasing the CO2 capture efficiency up to 99%. As alternative solutions for these cases different scenarios are considered:the increase of the capacity of a classic configuration of an absorber-desorber system;the introduction of a second absorber column as extending the absorption column height;the possible use of two absorbers and two desorbers working in series. This work deals with the detailed study on maximizing CO2 removal efficiency while maintaining the minimal energy consumption for the absorbent regeneration section. Published by Elsevier Ltd.

Original languageEnglish
Pages (from-to)1567-1575
Number of pages9
JournalEnergy Procedia
Volume114
DOIs
Publication statusPublished - Jan 1 2017
Event13th International Conference on Greenhouse Gas Control Technologies, GHGT 2016 - Lausanne, Switzerland
Duration: Nov 14 2016Nov 18 2016

Fingerprint

Carbon capture
Carbon dioxide
Flowcharting
Biogas
Global warming
Environmental impact
Industrial plants
Amines
Natural gas
Power plants
Cements
Energy utilization
Simulators
Acids
Gases

Keywords

  • absorption
  • carbon capture
  • energy saving
  • heat requirement
  • MEA
  • removal efficiency

ASJC Scopus subject areas

  • Energy(all)

Cite this

Improvement of Post-combustion Carbon Capture Process in Retrofit Case. / Nagy, Tibor; Moioli, Stefania; Langé, Stefano; Pellegrini, Laura A.; Mizsey, P.

In: Energy Procedia, Vol. 114, 01.01.2017, p. 1567-1575.

Research output: Contribution to journalConference article

Nagy, Tibor ; Moioli, Stefania ; Langé, Stefano ; Pellegrini, Laura A. ; Mizsey, P. / Improvement of Post-combustion Carbon Capture Process in Retrofit Case. In: Energy Procedia. 2017 ; Vol. 114. pp. 1567-1575.
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