Waste heat utilization device for hot-dip galvanized strip steel production

Abstract

The invention discloses a waste heat utilization device for hot-dip galvanized strip steel production. The waste heat utilization device comprises a base, a heat exchange box is fixedly connected to the left portion of the upper end of the base, a heating base is fixedly connected to the right portion of the upper end of the base, a galvanizing pot is fixedly connected to the middle of the upper end of the heating base in penetrating and inserting manners, and an air suction device is fixedly connected to the middle of the upper end of the heat exchange box; a water inlet pipe is fixedly connected to the left portion of the upper end of the heat exchange box in penetrating and inserting manners, an exhaust fan is fixedly connected to the right portion of the upper end of the heat exchangebox, an air suction pipe is fixedly connected to the middle of the upper end of the exhaust fan in penetrating and inserting manners, a treatment box is fixedly connected to the middle of the left endof the heat exchange box, and a purification device is movably connected to the upper end of the treatment box in penetrating and inserting manners; and a water outlet pipe is fixedly connected to the lower portion of the left end of the heat exchange box in penetrating and inserting manners. According to the waste heat utilization device for hot galvanizing strip steel production, hot flue gas generated by hot galvanizing can be collected, the utilization efficiency of heat energy is improved, the flue gas can be prevented from polluting the environment, and the waste heat utilization deviceis suitable for being widely applied.

Description

technical field [0001] The invention relates to the technical field of hot-dip galvanized steel strip production, in particular to a device for utilizing waste heat in hot-dip galvanized strip steel production. Background technique [0002] Galvanized steel strip is cold-rolled or hot-rolled, long and narrow strips of steel plate coated with a layer of raw materials called zinc to varying degrees. Hot-dip galvanized has the advantages of uniform coating, strong adhesion, and long service life. Hot-dip galvanized The zinc steel pipe substrate and the molten plating solution undergo complex physical and chemical reactions to form a corrosion-resistant zinc-iron alloy layer with a tight structure. The alloy layer is integrated with the pure zinc layer and the strip steel substrate, so its corrosion resistance is strong. Through Hot-dip galvanizing process forms a galvanized layer with uniform coating and strong adhesion on the surface of the strip steel to increase the corrosio...

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Problems solved by technology

[0002] Galvanized steel strip is cold-rolled or hot-rolled, long and narrow strips of steel plate coated with a layer of raw materials called zinc to varying degrees. Hot-dip galvanized has the advantages of uniform coating, strong adhesion, and long service life. Hot-dip galvanized The zinc steel pipe substrate and the molten plating solution undergo complex physical and chemical reactions to form a corrosion-resistant zinc-iron alloy layer with a tight structure. The alloy layer is integrated with the pure zinc layer and the strip steel substrate, so its corrosion resistance is strong. Through Hot-dip galvanizing process forms a galvanized layer with uniform coating and strong adhesion on the surface of the strip steel to increase the corrosion resistance of the strip steel and prolong the service life of the strip steel. This type of strip steel is hot-dip galvanized strip steel. The inventors have found that at least the following problems have not been resolved in the prior art: 1. In the production process of hot-dip galvanized strip steel, flue gas containing relatively high heat energy will be produced, but the existing devices cannot effectively utilize the heat energy , a great waste of energy; 2. Since the flue gas produced during galvanizing also contains a large amount of harmful substances, but the existing devices have low treatment efficiency for the flue gas, and the flue gas is discharged without effective treatment. pollute the environment; therefore, we propose a hot-dip galvanized strip production waste heat utilization device

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