Induced draft furnace air addition method and apparatus
AssigneeAir Products and Chemicals, Inc.
InventorsStephen Paul DiMartino, Sr., Peter George Goldstone, David Brian Letch, Nasim Hassan Malik
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Abstract
Method and apparatus for maintaining even heat distribution to each of the tubes contained in a down-fired induced draft furnace by eliminating external atmosphere disturbances such as wind from influencing furnace operation. The top of the furnace is isolated from receiving ambient air except through a central path which controls both rate and direction of air flow.
Claims10
A method for elimination of external atmospheric disturbances from affecting the performance of a down-fired induced draft furnace wherein air is introduced into burners used in the furnace through a penthouse type structure comprising the step of:
- modifying the penthouse type structure to permit entry of said air into said furnace in a manner to equalize pressure of said air across the entirety of said penthouse type structure and distribute said air evenly to all of said burners.
In a down-fired reformer furnace of the type wherein burners are located at the top of the furnace arranged in rows between rows of reformer tubes the improvement comprising:
- said furnace having a covering structure enclosing the top section of said furnace having the general configuration of a house with a gable roof said covering structure adapted to prevent ambient air from entering into said covering structure;
- and
- means in a central portion on either side of a peak in said gable roof to permit entry of air into said covering structure and said burners in a controlled manner.
Dependencies are inferred from the claim text.