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Thermal pretreatment of black liquor: A conceptual design
Högskolan i Borås, Akademin för textil, teknik och ekonomi. (Förbränning och termisk behandling)ORCID-id: 0000-0003-0037-3555
2017 (engelsk)Konferansepaper, Oral presentation only (Fagfellevurdert)
Abstract [en]

The recovery boiler is a vital part of the chemical recovery cycle and should produce a smelt of the cooking chemicals together with steam at high temperature and pressure. Part of these chemicals are found in the gases, either as small fume particles or as gases and this could cause problems such as deposits, corrosion and material losses. A thermal pre-treatment method is proposed to minimize the sodium and sulfur in the upper region of the boiler. Sulfur is released at temperatures below 600 °C in reducing atmospheres but most of this is recaptured by the black liquor droplets. The sodium losses are mostly by fume formation during char burning but a part could also be by physical ejection which would release sulfur as well.

sted, utgiver, år, opplag, sider
2017.
HSV kategori
Identifikatorer
URN: urn:nbn:se:hb:diva-12580ISBN: 978-1-77289-003-7 (digital)OAI: oai:DiVA.org:hb-12580DiVA, id: diva2:1142102
Konferanse
International Chemical Recovery Conference, Halifax, May 24-26, 2017
Forskningsfinansiär
Swedish Energy AgencyTilgjengelig fra: 2017-09-18 Laget: 2017-09-18 Sist oppdatert: 2017-09-19bibliografisk kontrollert

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