Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
CO2 Separation with Ionic Liquids -Property, Gas solubility and Energy consumption
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
2014 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Ionic liquids (ILs) have shown great potential to be used as liquid absorbents for CO2 capture because of its advantages, such as non-volatility, functionality, high CO2 solubility and lower energy requirements for regeneration. A significant amount of research has been carried out, but most of them are on the synthesis of novel ILs and the measurements of CO2 solubility in ILs. However, the application of IL-based technology for CO2 capture requires knowledge of gas solubility, the effect of other components on CO2 solubility, the thermo-physical properties, modeling as well as process simulation. Therefore, a tremendous gap exists between new technology development and implementation. The goal of this work is to perform a systematic study from experimental measurement, model development to process simulation in order to promote the development and application of IL-based technology for CO2 capture. In this work, the solubilities of CO2, CH4, H2, CO and N2 in choline chloride (ChCl)/urea (1:2 on a molar basis) were determined. The effect of water on the density, viscosity and CO2 solubility in ChCl/urea (1:2) were measured. The experimental gas solubility data was represented with the Non Random Two Liquid - Redlich Kwong (NRTL-RK) model. The results show that the addition of water significantly decreases the viscosity of ChCl/urea (1:2) while the effects on their density and CO2 solubility are much weaker. The excess molar volume and excess molar activation energy were calculated based on the experimental density and viscosity data. It was found that the intermolecular interaction between ChCl/urea and water is strong, and the hydrogen bond interaction is influenced by the temperature and water concentration. Meanwhile, the experimental data of CO2 solubility in imidazolium-based ILs at pressures below 10 MPa was surveyed and evaluated by NRTL-RK model. The CO2 absorption enthalpy and the energy consumption for a CO2 separation process using ILs by pressure swing and/or temperature swing were investigated. The results reveal that the temperature-dependent Henry’s constant is an important factor for energy consumption analysis in a pressure swing process, while the heat capacity of ILs plays a more important role in a temperature swing process.

Place, publisher, year, edition, pages
Luleå tekniska universitet, 2014.
Series
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-17174Local ID: 20944dd3-0a21-4af3-91ad-96b94ba19e5aISBN: 978-91-7583-115-2 (print)ISBN: 978-91-7583-116-9 (electronic)OAI: oai:DiVA.org:ltu-17174DiVA: diva2:990173
Note
Godkänd; 2014; 20141020 (yujxie); Nedanstående person kommer att hålla licentiatseminarium för avläggande av teknologie licentiatexamen. Namn: Yujiao Xie Ämne: Energiteknik/Energy Engineering Uppsats: CO2 Separation with Ionic Liquids – Property, Gas Solubility and Energy Consumption Examinator: Bitr Professor Xiaoyan Ji, Institutionen för teknikvetenskap och matematik, Luleå tekniska universitet Diskutant: Professor Päivi Elisa Mäki-Arvela, Åbo Akademi University, Finland Tid: Onsdag den 10 december 2014 kl 10.00 Plats: E632, Luleå tekniska universitetAvailable from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

Open Access in DiVA

fulltext(3027 kB)37 downloads
File information
File name FULLTEXT01.pdfFile size 3027 kBChecksum SHA-512
29c40e7b6175404f7395f020fbb8d3f328f623025de75e1406b9e885a11288e874455d8233f8ad33c06a6538b24f060e7bce8f079b55d2add63e3d50f854c9ab
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Xie, Yujiao
By organisation
Energy Science
Energy Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 37 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 234 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf