Method for guaranteeing high blast temperature by using blast furnace gas
A blast furnace gas and air temperature technology, applied in blast furnaces, blast furnace details, blast furnace parts and other directions, can solve the problems of low calorific value of blast furnace gas and the need for preheating for high air temperature.
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[0019] Embodiments of the method for utilizing blast furnace gas to realize high blast temperature provided by the present invention, such as Figure 1~2 As shown, the blast furnace gas from the blast furnace 17, when its temperature is lower than 300°C, the blast furnace gas first enters the bag filter 3 for dry dust removal through the gas main A cut-off valve 12, and when the temperature of the blast furnace gas is 300-900°C, Through the gas branch pipe A regulating valve 1, it first enters the heat pipe heat exchanger 2 for heat exchange and cooling, and then enters the bag filter 3 for dry dust removal;
[0020] After dry dedusting, the blast furnace gas with a volume ratio of 10% to 40% enters the pressure swing adsorption device 31 through the gas branch pipe B regulating valve 6 and the low temperature heat exchanger 5, and the blast furnace gas after entering the pressure swing adsorption device 31 has a volume of The blast furnace gas with a ratio of 40% to 80% enter...
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