Patent ID: 6122932
Filing Date: 2000-09-26
Classification: C21B,F25J,Y10S

Abstract:
A combined installation of at least one furnace and of at least one air distillation apparatus, comprising at least one blower having one output line connected to the furnace for supplying blast air to it, said air distillation apparatus comprising a medium pressure column having an air inlet, a mixing column having an air input and an oxygen outlet connected to the furnace for supplying oxygen thereto, and a feed air line derived from said output line and divided into a first feed air conduit connected to the air inlet of the medium pressure column and to an expansion circuit including a turbine, and into a second feed air conduit connected to the air input of the mixing column and including a booster coupled to said turbine in the expansion circuit, the booster and the turbine further coupled to an auxiliary driving apparatus.