Sootblower having a nozzle with deep reaching jets and edge cleaning jets

A sootblower in or for an industrial boiler, the sootblower having a major axis along a line of insertion and retraction defining an outward direction toward insertion and an inward direction toward retraction, comprising:

• a nozzle;
• a lance tube for supplying a flow of pressurized fluid to the nozzle;
• the nozzle comprising one or more perpendicular jets for emitting fluid perpendicular to the major axis;
• and the nozzle comprising one or more angled jets for emitting fluid angled with respect to perpendicular to the major axis of the sootblower and positioned to balance in an opposing perpendicular direction the fluid emitted from the one or more perpendicular jets to substantially eliminate the imposition of torque on the lance tube from the simultaneous emission of the fluid through the jets.

A method for cleaning an industrial boiler comprising a plurality of platen banks, each platen bank having a major axis, comprising the steps of:

• installing a plurality of sootblowers in the boiler, each sootblower having a major axis along a line of insertion and retraction, each sootblower located adjacent to a leading edge of a respective platen bank;
• configuring each sootblower with a nozzle and a lance tube for supplying a flow of pressurized fluid to the nozzle;
• configuring each nozzle with one or more deep reaching jets for emitting fluid aligned with the major axis of its respective platen bank for removing slag deposits inset from the leading edge of the platen bank;
• further configuring each nozzle with one or more edge cleaning jets for emitting fluid angled with respect to the major axis of its respective platen bank for removing slag deposits on the leading edge of the platen bank, wherein the one or more edge cleaning jets have larger throat diameters than the one or more deep reaching jets;
• for each sootblower, supplying pressurized fluid while inserting, rotating, and retracting the sootblower to remove slag deposits from its respective platen bank;
• and for each sootblower, sizing the jets to balance forces lateral to the major axis of the sootblower resulting from emission of the fluid to substantially eliminate the imposition of torque on the lance tube from the simultaneous emission of the fluid through the jets.