Patent ID: 6436711
Filing Date: 2002-08-20
Classification: C02F,G01N,Y10T

Abstract:
A method to control the addition of fresh oxygen scavenger product to a boiler system comprising:a) providing a boiler system; b) providing one fluorometer; c) using said one fluorometer to detect the fluorescent signal of residual oxygen scavenger present in the boiler feedwater; d) converting the fluorescent signal of said residual oxygen scavenger to the amount of said residual oxygen scavenger present in the boiler feedwater; and e) controlling the amount of fresh oxygen scavenger product being added to said boiler system based on the amount of residual oxygen scavenger fluorometrically detected in said boiler wherein said fresh oxygen scavenger product comprises a compound selected from the group consisting of gallic acid, hydroquinone, propyl gallate, 3,4-dihydroxybenzhydrazide, 2-hydroxybenzhydride, 4-hydroxybenzhydrazide and salicylal carbohydrazone feedwater.