SAETT ATT REGLERA INMATNINGS- OCH FOERBRAENNINGSFOERHAOLLANDENA AV FOERBRAENNINGSLUTAR VARIERANDE TILL SIN KEMISKA OCH PHYSIKISISKA KOMPOSITION FOER FOERBRAENNING I EN SODAPANNA.

摘要

The invention relates to a method of regulating, for the purpose of burning soda-ash in a recovery boiler furnace, the feeding-in or combustion conditions of concentrated spent liquors of varying chemical and physical properties by measuring some physical property of a liquor fed into the recovery boiler furnace and by regulating the feeding-in and combustion conditions directly on the basis of the thus measured physical properties. According to the invention, the maximum swelling, upon heating, of a dry-matter particle of the liquor fed into the recovery boiler furnace is measured. On the basis of this measurement the temperature, pH value, or injection pressure of the liquor fed into the furnace, or the height of the injection point or the direction of injection, or the feeding of air into the furnace is adjusted directly on the basis of the maximum swelling measurement.