In-line particle measurement in a recovery boiler using high-speed infrared imaging

Sami Siikanen, Pasi Miikkulainen, Marko Kaarre, Mikko Juuti

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Abstract

Black liquor is the fuel of Kraft recovery boilers. It is sprayed into the furnace of a recovery boiler through splashplate nozzles. The operation of a recovery boiler is largely influenced by the particle size and particle size distribution of black liquor. When entrained by upwards-flowing flue gas flow, small droplet particles may form carry-over and cause the fouling of heat transfer surfaces. Large droplet particles hit the char bed and the walls of the furnace without being dried. In this study, particles of black liquor sprays were imaged using a high-speed infrared camera. Measurements were done in a functional recovery boiler in a pulp mill. Objective was to find a suitable wavelength range and settings such as integration time, frame rate and averaging for the camera.
Original languageEnglish
Title of host publicationProceedings of SPIE 8354
Subtitle of host publicationThermosense: Thermal Infrared Applications XXXIV
EditorsDouglas Burleigh
Place of PublicationWashington
PublisherInternational Society for Optics and Photonics SPIE
ISBN (Print)978-0-8194-9032-2
DOIs
Publication statusPublished - 2012
MoE publication typeNot Eligible
EventThermosense: Thermal Infrared Applications XXXIV - Baltimore, United States
Duration: 24 Apr 2012 → …

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume8354
ISSN (Print)0277-786X

Conference

ConferenceThermosense: Thermal Infrared Applications XXXIV
CountryUnited States
CityBaltimore
Period24/04/12 → …

Fingerprint

boilers
recovery
high speed
furnaces
cameras
flue gases
fouling
particle size distribution
nozzles
gas flow
sprayers
beds
heat transfer
causes
wavelengths

Keywords

  • infrared imaging
  • particles
  • infrared cameras
  • recovery boilers
  • spray

Cite this

Siikanen, S., Miikkulainen, P., Kaarre, M., & Juuti, M. (2012). In-line particle measurement in a recovery boiler using high-speed infrared imaging. In D. Burleigh (Ed.), Proceedings of SPIE 8354: Thermosense: Thermal Infrared Applications XXXIV [83540M] Washington: International Society for Optics and Photonics SPIE. Proceedings of SPIE, Vol.. 8354 https://doi.org/10.1117/12.916146
Siikanen, Sami ; Miikkulainen, Pasi ; Kaarre, Marko ; Juuti, Mikko. / In-line particle measurement in a recovery boiler using high-speed infrared imaging. Proceedings of SPIE 8354: Thermosense: Thermal Infrared Applications XXXIV . editor / Douglas Burleigh. Washington : International Society for Optics and Photonics SPIE, 2012. (Proceedings of SPIE, Vol. 8354).
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abstract = "Black liquor is the fuel of Kraft recovery boilers. It is sprayed into the furnace of a recovery boiler through splashplate nozzles. The operation of a recovery boiler is largely influenced by the particle size and particle size distribution of black liquor. When entrained by upwards-flowing flue gas flow, small droplet particles may form carry-over and cause the fouling of heat transfer surfaces. Large droplet particles hit the char bed and the walls of the furnace without being dried. In this study, particles of black liquor sprays were imaged using a high-speed infrared camera. Measurements were done in a functional recovery boiler in a pulp mill. Objective was to find a suitable wavelength range and settings such as integration time, frame rate and averaging for the camera.",
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Siikanen, S, Miikkulainen, P, Kaarre, M & Juuti, M 2012, In-line particle measurement in a recovery boiler using high-speed infrared imaging. in D Burleigh (ed.), Proceedings of SPIE 8354: Thermosense: Thermal Infrared Applications XXXIV ., 83540M, International Society for Optics and Photonics SPIE, Washington, Proceedings of SPIE, vol. 8354, Thermosense: Thermal Infrared Applications XXXIV, Baltimore, United States, 24/04/12. https://doi.org/10.1117/12.916146

In-line particle measurement in a recovery boiler using high-speed infrared imaging. / Siikanen, Sami; Miikkulainen, Pasi; Kaarre, Marko; Juuti, Mikko.

Proceedings of SPIE 8354: Thermosense: Thermal Infrared Applications XXXIV . ed. / Douglas Burleigh. Washington : International Society for Optics and Photonics SPIE, 2012. 83540M (Proceedings of SPIE, Vol. 8354).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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AB - Black liquor is the fuel of Kraft recovery boilers. It is sprayed into the furnace of a recovery boiler through splashplate nozzles. The operation of a recovery boiler is largely influenced by the particle size and particle size distribution of black liquor. When entrained by upwards-flowing flue gas flow, small droplet particles may form carry-over and cause the fouling of heat transfer surfaces. Large droplet particles hit the char bed and the walls of the furnace without being dried. In this study, particles of black liquor sprays were imaged using a high-speed infrared camera. Measurements were done in a functional recovery boiler in a pulp mill. Objective was to find a suitable wavelength range and settings such as integration time, frame rate and averaging for the camera.

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Siikanen S, Miikkulainen P, Kaarre M, Juuti M. In-line particle measurement in a recovery boiler using high-speed infrared imaging. In Burleigh D, editor, Proceedings of SPIE 8354: Thermosense: Thermal Infrared Applications XXXIV . Washington: International Society for Optics and Photonics SPIE. 2012. 83540M. (Proceedings of SPIE, Vol. 8354). https://doi.org/10.1117/12.916146