Blast furnace plant and shutdown process
AssigneeDanieli Corus B.V.
InventorsRiekelt DE BOER, Hendrik Adriaan Marius GEERDES, Reinoud Jacobus VAN LAAR, Jong Sung PARK, Ho Young LEE
Life of this patent
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Abstract
Blast furnace plant (1) and shutdown process for such a blast furnace plant (1). The blast furnace plant comprises a blast furnace (2) and a gas cleaning section (6) for cleaning gas from the blast furnace. Clean gas is released via a clean gas vent line (11) downstream of the gas cleaning section.
Claims20
A process of shutting down a blast furnace plant comprising a blast furnace and a gas cleaning section for cleaning gas from the blast furnace, said method comprising:
- releasing clean gas via a clean gas vent line downstream of the gas cleaning section;
- reducing hot blast pressure and/or flow to a set value;
- and
- subsequently generating a flow from tuyeres of the blast furnace to the clean gas vent line.
A blast furnace plant comprising a blast furnace, a gas cleaning section, and a clean gas transport line to a gas grid for further transport of cleaned gas, wherein the clean gas transport line to the gas grid is provided with a clean gas vent line, and the blast furnace comprises tuyeres and means for generating a flow from the tuyeres of the blast furnace to the clean gas vent line.
Dependencies are inferred from the claim text.