EXCHANGER WITH EVEN FLOW FLUID DISTRIBUTION

摘要

Apparatus to exchange heat between a combustion process flue gas and a cooler gaseous stream. An outer housing is divided into a lower inlet section for the cooler gases and an upper section for the exit of said gases. A centrally located shell extends the length of the housing and includes therein a plurality of heat exchange tubes through which the hot process flue gases will pass from the bottom to the top of said shell for discharge to the atmosphere. The shell is positioned a distance above the bottom tube sheet and the cooler incoming gaseous fluid stream is caused to be injected tangentially into the lower section wherein a pressure differential is caused to exist between the lower section and the interior of the shell so as to maintain substantially even flow distribution and a high radial velocity of the cooler fluid stream which creates a substantially uniform temperature across the diameter of the tube sheet.