Method of using nanoalloy additives to reduce plume opacity, slagging, fouling, corrosion and emissions

Abstract

A process for improving the operation of combustors includes the steps of burning a carbonaceous fuel in a combustor system and determining combustion conditions within the combustor system that can benefit from a targeted treatment additive, wherein the determinations are made by calculation including computational fluid dynamics and observation The process further includes locating introduction points in the combustor system where introduction of the targeted treatment additive could be accomplished. Based on the previous steps, a treatment regimen for introducing the targeted treatment additive to locations within the combustor system results in one or more benefits selected from the group consisting of reducing the opacity of plume, improving combustion, reducing slag, reducing LOI and/or unburned carbon, reducing corrosion, and improving electrostatic precipitator performance. The targeted treatment additive comprises an alloy represented by the following generic formula (Aa)n(Bb)n(Cc)n(Dd)n( . . . )n, wherein each capital letter and ( . . . ) is a metal, wherein A is a combustion modifier, B is a deposit modifier; C is a corrosion inhibitor; and D is a combustion co-modifier/electrostatic precipitator enhancer, wherein each subscript letter represents compositional stoichiometry, wherein n is greater than or equal to zero and the sum of n's is greater than zero, and wherein the alloy comprises at least two different metals, with the proviso that if the metal is cerium, then its compositional stoichiometry is less than about 0.7.

Description

technical field [0001] The present invention relates to a method of reducing the plumeopacity of flue gases emitted into the atmosphere from large burners, such as those used industrially and by auxiliary equipment to provide electrical energy and to incinerate waste burner. According to the invention, not only is the opacity of the flue gas reduced, but combustion is improved and / or slag is reduced and / or LOI and / or unburned carbon is reduced and / or corrosion is reduced and / or improved performance of the electrostatic precipitator. The present invention achieves one or more of the aforementioned desired effects through the use of targeted treatment additives introduced into the burner system. Background technique [0002] Combustion of carbonaceous fuels, such as heavy fuel oil, coal, petroleum coke, and municipal and industrial waste, typically produces smoke that rises from the stack and may have low to high opacity. Additionally, the combustion of these fuels results ...

AI Technical Summary

Problems solved by technology

These factors lead to incomplete combustion