COAL NOZZLE ASSEMBLY FOR A STEAM GENERATION APPARATUS
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United States of America Patent
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Issued Date -
Jul 23, 2020
app pub date -
Jul 26, 2018
filing date -
Jul 31, 2017
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Abstract
A steam generating system includes a furnace, a nozzle tip assembly for pulverized coal and primary air as well as means for conveying secondary air in the furnace. The nozzle according to the invention comprises a nozzle body (3) and several channels (5) being connected with the nozzle body, the channels are diverging from each other. At the exit faces (17) of the channels obstructions (13) are disposed to induce huge turbulences of the primary air when entering the furnace. Due to these turbulences the primary air and the entrained coal are mixed very well before being combusted in the furnace. This results in a better more effective combustion with reduced NOx- emissions.
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