TH15739A - Methods and tools for heating oxy-fuels with lower NOx levels in high-temperature, corrosive environments. - Google Patents

Abstract

Methods and tools for generating oxy-fuel flames with low NOx products by deflecting the concentrated oxy-fuel flame produced in the lamp's mouth along a limited path, controlled by the flame spread rate and lamp diameter.

Claims (1)

1. The system for heating the engine room to a higher temperature consists of a combination of: a primary combustion chamber modified for attachment to or mounting in the wall of such chamber; such primary combustion chamber having at least two generally parallel surfaces, with one of these surfaces protruding into the volume of such chamber; such primary combustion chamber having a cylindrical passage generally running through the such primary combustion chamber between the generally parallel surfaces; such passage is modified to accommodate an oxy-fuel lamp with its longitudinal axis perfectly aligned with the longitudinal axis of such passage; and a subsequently mixed oxy-fuel lamp, generally of the cylindrical type, with a front end consisting of a central fluid channel surrounded by one or more surrounding fluid channels to allow fluid to enter through the surrounding fluid channels surrounding the fluid inlet; such central channel being the front inlet of such lamp; and a channel defined inside the passage in such primary combustion chamber to extend the passage to the front end of such lamp. This distance is defined. The ratio between 2 and 6 is found by dividing the distance (length) between the front end of the lamp and the end of the passage in the block by the diameter of the front end of the lamp, which is selected to have a burning rate from 0.25 to 40 million BTU/hour.