Method and device for separating carbon dioxide to improve mass energy of blast furnace gas
A technology of carbon dioxide and blast furnace gas, applied in blast furnaces, blast furnace details, furnaces, etc., to achieve the effects of reducing steam consumption, realizing recycling, and reducing fuel consumption
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[0019] 1. To 2000m 3 Blast furnace, blast furnace gas is separated and recovered carbon dioxide recycling process, 1300~3000m of gas is recovered per ton of iron 3 , Using the trapping device to recover and separate the carbon dioxide as the carrier gas for the blast furnace injection fuel, and the gas flow rate is 200~1000m 3 / min, the pressure is 0.8~1.5MPa; carbon dioxide is used to replace part of the air into the hot blast stove, the flow of cold air is 3500~6000m 3 / min.
[0020] 2. To 3200m 3 Blast furnace, blast furnace gas is separated and recovered carbon dioxide recycling process, 1300~3000m of gas is recovered per ton of iron 3 , Using recovered and separated carbon dioxide as the carrier gas for blast furnace injection fuel, and the gas flow rate is 700-1500m 3 / min, pressure 0.2~1MPa; carbon dioxide is used to replace part of the air into the hot air furnace, and the flow of cold air gas is 5000~9000m 3 / min.
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