Arcelormittal Investigacion Y Desarrollo, S.l.

Arcelormittal

Jean Borlee

Dominique Sert

Fernand Didelon

Yves Rachenne

Christian Gillion

A process for recycling blast furnace gas is provided. At least one portion of the gases resulting from the blast furnace undergo a COpurification step to create a CO-rich gas which is reinjected at a first top injection point at a temperature between 700&#xb0; C. and 1000&#xb0; C. through a top injection line, and at a second bottom injection point at a temperature between 1000&#xb0; C. and 1300&#xb0; C. through a bottom injection line. The gases from the bottom and top injection lines are heated at a temperature between 1000&#xb0; C. and 1300&#xb0; C. A portion of the CO-rich gas exiting the purification step is directly introduced into the top injection line via a cold gas injection line to obtain a temperature between 700&#xb0; C. and 1000&#xb0; C. at the first top injection point. The gas that flows through the bottom and top injection points controlled upstream of the system of the heaters. A device is also provided.

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Neupre, Belgium

Jean Borlee