Combined plant of a furnace and an air distillation device, and implementation process

摘要

The combined plant comprises at least one furnace (FM) fed by a blowing machine (S), at least one air distillation device containing at least one medium-pressure column (MP) and a mixing column (CM) which has an oxygen outlet line (O) to feed the furnace (FM), the distillation device being fed via the blowing engine (S), at least the compressed air directed to the mixing column (CM) being given a positive pressure in at least one compressor-turbine group (C2-T2), the turbine (T2) of which is located in a circuit (Fi) for a pressurized fluid which is available at the plant site, for example steam or a gas originating from the furnace.