초록

Reduction of slagging is improved by targeting slag-reducing chemicals in a furnace with the aid of computational fluid dynamic modeling. Chemical utilization and boiler maintenance are improved.

대표청구항 ▼

[ We claim:] [1.] A process for reducing the buildup of at least one of slag and corrosion in a combustion unit, comprising:determining at least one of slagging and corrosion locations within a combustion unit where such will occur in the absence of treatment;determining the temperature and gas flow

[ We claim:] [1.] A process for reducing the buildup of at least one of slag and corrosion in a combustion unit, comprising:determining at least one of slagging and corrosion locations within a combustion unit where such will occur in the absence of treatment;determining the temperature and gas flow conditions within the combustion unit;locating introduction points on a combustion unit wall where introduction of chemicals could be accomplished;based on the temperature and gas flow conditions existing between introduction points and the at least one of slagging and corrosion locations, determining the droplet size, amount of treatment chemical, amount of water as a carrier, and droplet momentum necessary to direct the chemical in active form to the slagging and/or corrosion locations; and,based on the determinations of the previous step, introducing chemical to reduce at least one of and slagging and corrosion.