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PROCESS FOR DENOXIFICATION OF OFF-GASES FROM ANNEALING AND PICKLING LINES, AND AN ANNEALING AND PICKLING LINE, ESPECIALLY FOR STAINLESS STEEL HOT OR COLD STRIP
PROCESS FOR DENOXIFICATION OF OFF-GASES FROM ANNEALING AND PICKLING LINES, AND AN ANNEALING AND PICKLING LINE, ESPECIALLY FOR STAINLESS STEEL HOT OR COLD STRIP
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机译:退火和酸洗线以及退火和酸洗线中的残渣脱氧的过程,特别是对于不锈钢热轧或冷轧带钢
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摘要
A method for removing nitrogen oxide of off-gas from annealing and pickling lines and an annealing and pickling line for stainless steel hot or cold strip are provided to ensure the NOx content of the off-gas with the lowest possible expenditure. Nitrogen oxide of off-gas is removed from annealing and pickling lines by heating the off-gas from a pickling section(3) and removing the nitrogen oxide through selective catalytic reduction. Heat generated from the off-gas supplied from an annealing furnace(1) is applied to off-gas supplied from the pickling section before the selective catalytic reduction. The off-gas supplied from the pickling section is combined with the off-gas supplied from the annealing furnace, thereby performing the selective catalytic reduction.
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