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
Numerical Simulation and Validation of an Injection Lance Model
2014 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The blast furnace (BF) chemically reduces and physically converts the iron ore into a liquid called hot metal. Pulverized coal injection (PCI) was implemented in the industry in the middle of the 1980´s. PCI improves the BF-process economically and provides possible heat level control but may introduce operational disturbance. Due to the harsh environment inside the BF experimental data is hard to obtain. Therefore computational fluid dynamics (CFD) often is used to understand and further optimize the process.The process can be improved by increasing the coal combustion inside the BF. One way of doing this is by increase the dispersion of the coal particle plume from the PCI. To be able to validate a CFD-model experiments for particle dispersion have been conducted at room temperature for two different lance types. The results from the experiment were in the form of images and some collected fluid data (boundary conditions).The objective of this study has been to create a CFD-model for particle injection through an injection lance and develop a methodology to validate the particle dispersion model against the experimental images. The result from this work consists of two CFD-models, where main errors corresponding to numerical methods have been investigated and discussed. Further, this work has generated a model validation method based on analyzing the luminosity dispersion in images.The main conclusions from this work are:• The coaxial model generated an estimated model error of 10-15 % depending on the investigated boundary conditions. The value of the model error for the coaxial model is of high credibility based on the estimated magnitude of the iteration and discretization errors that were made• The swirl model generated an estimated model error of 6-19 % depending on the investigated boundary conditions. The value of the model error for the swirl model is of significantly lower credibility compared to the coaxial model based on the estimated magnitude of the iteration and discretization errors that were made

Place, publisher, year, edition, pages
2014. , 67 p.
Keyword [en]
Technology
Keyword [sv]
Teknik, Blast furnace (BF), injection lance, pulverized coal injection (PCI), numerical modeling, Computational fluid dynamics (CFD), Discrete phase model (DPM), image analysis
Identifiers
URN: urn:nbn:se:ltu:diva-46212Local ID: 3db2ae3e-7410-41f0-9c07-fb19b5439bb9OAI: oai:DiVA.org:ltu-46212DiVA: diva2:1019525
External cooperation
Subject / course
Student thesis, at least 30 credits
Educational program
Sustainable Energy Engineering, master's level
Note
Validerat; 20140619 (global_studentproject_submitter)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

Open Access in DiVA

fulltext(18815 kB)32 downloads
File information
File name FULLTEXT02.pdfFile size 18815 kBChecksum SHA-512
f4dd87efc18001a39c47857d5e37c34f5db5c02f51a5a8d6dac08e84978a112b4bab6ff954b8269d73bac82f6963c177bba930591b673b2ef446bf793da6a0f9
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Ölund, Martin

Search outside of DiVA

GoogleGoogle Scholar
Total: 32 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

urn-nbn

Altmetric score

urn-nbn
Total: 56 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