Patent ID: 6773684
Filing Date: 2004-08-10
Classification: B01J,C01B,F28D

Abstract:
A hydrocarbon fuel gas steam reformer assembly comprising:a) a plurality of fuel gas passages for receiving a mixture of fuel gas and steam; b) a plurality of burner gas passages for receiving a burner gas stream, said burner gas passages and said fuel gas passages being disposed in heat exchange relationship with each other whereby heat from said burner passages is transferred to said fuel gas passages; and c) a first portion of said burner gas passages being disposed in a co-flow gas flow direction with adjacent fuel gas passages, and a second portion of said burner gas passages being disposed in a counter-flow gas flow direction with adjacent fuel gas passages, whereby burner gases in said first portion of said burner gas passages flow in the same direction as fuel gases in adjacent fuel gas passages, and burner gases in said second portion of said burner gas passages flow in an opposite direction as fuel gases in adjacent fuel gas passages.