The Babcock & Wilcox Company

Michael L Meuller

Jesse C Johnston

James S Kulig

Steven F Lewis

Eric C Collet

Mark J Sepela

Thomas E Moskal

Ronald E Sherrick

A retractable chemical injection device especially adapted for introducing a chemical reactant solution into a large scale combustion device such as a fossil fuel fired boiler. The device incorporates a lance tube mounted to a elongated frame located outside of the combustion device which enables the lance tube to be extended into and retracted from the combustion device flue gas stream. The lance tube carries a plurality of axially distributed discharge nozzles enabling the chemical reactant entrained in an injection carrier to be ejected from the nozzles. The injection device provides for atomization of the chemical reactant solution before the mixture passes into the lance tube which provides the beneficial effects of cooling the lance tube and providing a uniform distribution of the chemical solution to the distributed discharge nozzles. Additional features of the injection device include providing a low emissivity coating for the lance tube to reduce heat transfer to the lance tube and means for adjusting the angular position of the lance tube discharge nozzles in use.

Retractable chemical injection system

A retractable sootblower having an open frame. The frame includes an inboard end wall, an outboard end wall and a pair of opposingly positioned side panels. The side panels are seamless and mounted to interconnect the inboard and outboard end walls together. The side panels cooperating with the end walls to generally define a rectangularly shaped structure which encloses the carriage and lance tube of the sootblower. The generally open top and bottom of the frame allows for substantially unobstructed access from above and below to the carriage and lance tube. The sootblower also includes a dry lance hub which eliminates various problems associated with lubricant deterioration.

Open beam sootblower

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Circleville, OH, United States of America

Michael L Meuller