Patent ID: 8685148

Claim:
A process P A for treating a vented gas mixture from a deaerator of a steam production process P B associated with a hydrocarbon-reforming syngas production process P C partly carried out in a reformer having a convection zone and a radiation zone and in which the heat is provided by the combustion of a fuel oil supplied via a low-pressure line in the presence of combustion air, said process P A comprising the following steps: a) supplying a steam production circuit with at least one stream of water; b) stripping dissolved gaseous impurities present in the at least one stream of water countercurrently with a stream of clean steam, thereby producing at least: a stream of deaerated water, and a vented gas mixture, wherein the vented gas mixture is a gas stream containing at least some of the gaseous impurities present in the at least one stream of water; and c) introducing at least a part of the vented gas mixture to the convection zone at an introduction location, wherein the introduction location is located at a point of the process P C during which fluids are at a temperature T between 100Â° C. and 1000Â° C., such that the vented gas mixture is mixed therein with at least one gas stream within the convection zone, wherein the at least one gas stream is of sufficiently low pressure, such that the method comprises an absence of compression of said vented gas mixture prior to step c), and wherein said gas stream of sufficiently low pressure comprises a combustion flue gas.