Furnace lance for atomizing a coal-water suspension
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United States of America Patent
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Aug 9, 1994
Grant Date -
N/A
app pub date -
Apr 9, 1993
filing date -
Apr 13, 1992
priority date (Note) -
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Abstract
A burner lance for atomizing a suspension of coal in water by means of an atomizing gas. The lance consists of an inner pipe (1) that the suspension flows through, of an outer pipe (2) radially surrounding the inner pipe and leaving a gap (5) that the atomizing gas flows through, and of a nozzle (10) that narrows in the direction the suspension flows in and communicates with both the inner and the outer pipe. The outer pipe extends along the burner beyond the inner pipe and accommodates a nozzle (10) in that section. The outside diameter of the nozzle equals the inside diameter of the outer pipe. The nozzle tapers at a central angle of 35.degree. to 45.degree. and terminates in a concentric exit (11).
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