초록 ▼

A tangentially-fired furnace is disclosed in enough detail to illustrate the location of injection ports for excess air above the fireball of the combustion chamber to eliminate the swirl of the flue gases as the flue gases flow into the convection section, in order to produce a uniform mass flow an

A tangentially-fired furnace is disclosed in enough detail to illustrate the location of injection ports for excess air above the fireball of the combustion chamber to eliminate the swirl of the flue gases as the flue gases flow into the convection section, in order to produce a uniform mass flow and temperature pattern of the flue gases over the cross section of the furnace exit.

대표청구항 ▼

A tangentially-fired, pulverized coal-burning furnace, including, a combustion chamber of substantially square cross section, pivotable fuel and air nozzles in each corner of the combustion chamber ejecting fuel and air to generate flames relative the centerline of the chamber to form a fireball swi

A tangentially-fired, pulverized coal-burning furnace, including, a combustion chamber of substantially square cross section, pivotable fuel and air nozzles in each corner of the combustion chamber ejecting fuel and air to generate flames relative the centerline of the chamber to form a fireball swirling about the axis of chamber, an exit from the upper portion of the combustion chamber for the flue gases generated in the combustion chamber. a convection section connected to the flue gas exit downstream of the combustion chamber, and at least one nozzle mounted in the upper portion of the combustion chamber ejecting secondary air in the direction and volume and at the velocity to oppose the swirl of the fireball in its upper portion to produce a uniform nonswirling mass flow of exit gases from the combustion chamber to the flue gas outlet and militate against the formation of NOx.