Regenerative firing system

摘要

A regenerative firing system is disclosed which functions in a heat treating furnace or other high temperature technology. The system comprises a plurality of regenerator heat transfer boxes which absorb the heat contained in high temperature exhaust from the furnace. Each regenerator box transfers this absorbed heat to a flow of ambient air. The now heated air flows from the regenerator box into a common air stream which is then fed to a plurality of burners. The preheated air stream is supplied to a common air stream that is then simultaneously provided to each of a plurality of burners. In addition, the current invention comprises a method of heat recovery for a furnace utilizing the inventive system.

主权项

1. A regenerative firing system for a furnace, comprising:
a furnace, wherein the furnace creates heated furnace exhaust gas; two or more burners; two or more regenerators in flow communication with said furnace; a first valve, wherein the first valve opens and closes to control the flow of the heated furnace exhaust gas to a first regenerator of the two or more regenerators; a second valve, wherein the second valve opens and closes to control the flow of the heated furnace exhaust gas to a second regenerator of the two or more regenerators; wherein the first valve is independent from the second valve such that opening and closing of the first valve does not control the flow of the heated furnace exhaust gas to the second regenerator; wherein said two or more regenerators are each in flow communication with each of said two or more burners, wherein pre-heated combustion air exiting from a first one of said two or more regenerators merges with pre-heated combustion air exiting from a second one of said two or more regenerators to form a combined pre-heated combustion air stream, and wherein the combined pre-heated combustion air stream flows into each of said two or more burners.