Reheat apparatus and method of sintered net flue gas

Abstract

The invention relates to a reheating device and a reheating method of clean sintering smoke gas. On one hand, the invention provides the reheating device of the clean sintering smoke gas, which comprises an afterheat reclamation plant that is used for reclaiming the afterheat of a sintering circular cooler and a heat exchanger that is used for implementing the heat exchange between the afterheat and the clean sintering smoke gas so as to increase the temperature of the clean sintering smoke gas. On the other hand, the invention provides the reheating method of the clean sintering smoke gas, which comprises the following steps: the afterheat of the sintering circular cooler is reclaimed; and the heat exchange between the afterheat and the clean sintering smoke gas is implemented so as to increase the temperature of the clean sintering smoke gas. The invention not only has simple structure and lower implementation and maintenance cost, but also can efficiently and reliably increase the temperature of the clean sintering smoke gas, reduce the corrosion of a chimney that is caused by the smoke gas, lower the antisepsis cost of the chimney, improve the discharging diffusivity of the smoke gas and avoid acid mist that is formed at the periphery of the chimney.

Description

technical field [0001] The present invention relates to a treatment device and method for sintering flue gas, more particularly, to a reheating device and method for clean sintering flue gas. Background technique [0002] Sintering is to put various powdered ore raw materials (generally iron ore), mixed with suitable fuel and flux, and then put them on the sintering machine to ignite and sinter. Under the action of high heat generated by the fuel and a series of physical and chemical changes, part of the mixed materials The particle surface softens and melts to produce a certain amount of liquid phase, which wets other unmelted ore particles. When cooled, the liquid phase binds the ore particles into sintered ore. [0003] Sintering flue gas is the waste gas generated during the high-temperature sintering molding process after the sintering mixture is ignited (in short, it is the flue gas emitted by the sintering machine), which usually contains a variety of environmental po...

AI Technical Summary

Problems solved by technology

However, since this technology requires an additional heat exchanger in or near the sintering machine to heat the steam, and requires a certain level of anti-corrosion and usually a long transmission distance of the steam pipeline and additional suction equipment, etc., it is implemented The cost is high, and the maintenance work of the steam pipeline is not very convenient.

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