Patent ID: 6488076
Filing Date: 2002-12-03
Classification: F23G,F23L,Y02E

Abstract:
A heating apparatus for supply of heated gaseous fluid to high temperature gaseous fluid introduction equipment, comprising:a first regenerative heat exchanger; a first combustion area connected to the first regenerative heat exchanger; a splitting area connected to the first combustion area; a second regenerative heat exchanger; a second combustion area connected to the second regenerative heat exchanger and connected to the splitting area; wherein the apparatus has a first position in which low temperature gaseous fluid is introduced to the first regenerative heat exchanger to form a heated fluid supply, wherein the heated fluid supply passes through the first combustion area, enters the splitting area where the heated fluid supply is split into first and second streams, wherein the second stream is conducted away from the apparatus to the gaseous fluid introduction equipment and the first stream is conducted to the second combustion area where a combustion reaction takes place to form combusted exhaust gas, wherein the combusted exhaust gas is conducted to the second heat exchanger to regenerate the second heat exchanger, and hot gas effluent is exhausted from the second heat exchanger, wherein no combustion is conducted in the first combustion area when the apparatus is in the first position; wherein the apparatus has a second position in which low temperature gaseous fluid is introduced to the second regenerative heat exchanger to form a heated fluid supply, wherein the heated fluid supply passes through the second combustion area, enters the splitting area where the heated fluid is split into first and second streams, wherein the second stream is conducted away from the apparatus to said gaseous fluid introduction equipment and the first stream is conducted to the first combustion area where a combustion reaction takes place to form combusted exhaust gas, wherein the combusted exhaust gas is conducted to the first heat exchanger to regenerate the first heat exchanger, and hot gas effluent is exhausted from the first heat exchanger, wherein no combustion is conducted in the second combustion area when the apparatus is in the second position.