Abstract: An air separation plant has a product nitrogen compressor arranged to be driven by a steam turbine adapted to be operated in a cycle in which steam is able to be raised in a steam generator by heat exchange of water with hot gaseous exhaust from a gas turbine.

Abstract: An air separation plant includes an air compressor, a gas turbine arranged to drive the air compressor, a product nitrogen compressor, and a steam turbine arranged to drive the product nitrogen compressor. The steam turbine forms part of a circuit including a steam generator in which stream is able to be raised by heat exchange of water with hot gaseous exhaust from the gas turbine or another gas turbine.

Abstract: A first, solid, carbon-containing fuel is gasified and iron is melted in a gasifier-melter. A first flow of resulting fuel gas is employed to form the iron in a vertical shaft furnace by direct reduction of iron ore. A second flow of resulting fuel gas is mixed with fuel gas produced by separately gasifying a second carbon-containing fuel in a second gasifier, in which no iron is melted and which supplies essentially no carbonaceous solid fuel to the first gasification stage. This mixing helps to dampen fluctuations in the flow rate of the second flow of the resulting fuel gas.

Abstract: An air separation plant includes a product nitrogen compressor, a gas turbine and a steam turbine. The gas turbine and the steam turbine are operatively associated with the product nitrogen compressor so as to be able to drive the product nitrogen compressor. The steam turbine has an inlet communicating with a steam generator adapted to recover heat from the gas turbine. The air separation plant also includes an air compressor which is typically similarly operatively associated with a gas turbine and a steam turbine. The steam turbine has an inlet communicating with a steam generator adapted to recover heat from the gas turbine.