High temperature furnace

Details High temperature furnace High temperature furnace

1991-12-10

1993-05-04

Kastler, Scott

Metallurgical apparatus

Process

266262, 432138, F27B 916

Patent

active

052079724

ABSTRACT:
A high temperature, low NO.sub.x industrial furnace coal-fired burners placed in an arcuate heat track conduit which heats an arcuately configured wall member extending through an opening in the heat track conduit. The heated portion of the wall member rotates out of the heat track conduit to indirectly heat a bundle or bank of heat exchange tubes while an unheated wall portion moves into the opening vacated by the heated wall portion. The regenerative heated wall member thus permits the heat exchange tube bundle to be heated to high temperature without exposure to the burner products of combustion. The coal-fired burners are operated substoichiometrically to produce combustibles and a free-standing, jet entrainment arrangement is utilized to achieve staged combustion to avoid NO.sub.x formation.

REFERENCES:
patent: 3782883 (1974-01-01), Nesbitt et al.
patent: 3819323 (1974-06-01), Hemsath et al.
patent: 3836320 (1974-09-01), Hemsath et al.
patent: 5052921 (1991-10-01), Hemsath
"40th Anniversay of Research at IJmuiden", International Flame Research Foundation, Dec. 1989.
"Research at IJmuiden During the Triennial 1989-1991", Int'l Flame Research Foundation, Dec. 1989.

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