Blast furnace gas

Blast furnace gas ( blast furnace gas) is a flammable gas dome, which, due to its considerable nitrogen content of about 45-60 % and a carbon monoxide proportion of about 20-30 % only a small heating value of 3.35 to 4 MJ / m³. Blast furnace gas except nitrogen and carbon monoxide for about 20-25 % carbon dioxide and 2-4 % hydrogen.

It is at the upper end of the shaft of the blast furnace - the gout - removed and cleaned in a stack gas scrubber, mainly airborne particles are removed. The blast furnace plant uses the blast furnace gas to the air blown into the blast furnace air, the wind to drive compressors and heat up this wind in hot blast stoves. Some foundries use the dust- furnace gas to generate process steam to generate electricity using steam turbines. The blast furnace gas was formerly, used as a fuel, for example, for double-acting tandem large gas engines with generators to produce electricity, the heating of incandescent and " reheating furnace " and the " process bottom " of systems, in particular coke ovens.

Because the proportion of carbon monoxide furnace gas is very toxic. If you stay near blast furnace gas pipes Take special precautions apply.

The startup LanzaTech makes a bioreactor and unspecified bacteria from blast furnace gas ethanol.