Smoke utilization system and method for sintering ring cooling machine

Abstract

The invention discloses a smoke utilization system and method for a sintering ring cooling machine. The system comprises a waste heat boiler, an organic Rankine cycle power generation assembly and a booster fan, wherein a first machine hood used for collecting high-temperature smoke and a second machine hood used for collecting middle-temperature smoke are arranged above the ring cooling machine; the first machine hood is connected with the waste heat boiler through an air pipe; the second machine hood is connected with the smoke inlet of the organic Rankine cycle power generation assembly through an air pipe; the smoke outlet of the organic Rankine cycle power generation assembly is connected with the inlet of the booster fan through an air pipe; and the outlet of the booster fan is connected with the hood of a sintering machine through an air pipe. The method comprises the steps that the high-temperature smoke is collected into the waste heat boiler for heat exchange; the middle-temperature smoke is collected to the organic Rankine cycle power generation assembly for cooling; and the cooled smoke enters the machine shield of the sintering machine through the booster fan as an oxygen source for material layer sintering. By adopting the smoke utilization system and method for the sintering ring cooling machine, the smoke and waste heat generated by the ring cooling machine can be fully utilized.

Description

technical field [0001] The present invention relates to a flue gas utilization system and method thereof, in particular to a flue gas utilization system of a sintering ring cooler and a method thereof. Background technique [0002] At present, the iron and steel industry is one of the industries with the largest resource consumption and pollution emissions in the field of industrial production, and the sintering process is the main source of pollution in iron and steel enterprises. [0003] The temperature of the sintered ore generated after sintering of various raw materials, auxiliary materials and fuels from the sintering machine is about 600℃~1000℃ when it is unloaded from the tail of the sintering machine. Equipment damage and environmental pollution require cooling the hot sinter to below 150°C. The sintering ring cooler is to crush the hot sinter unloaded from the sintering machine and distribute it continuously and evenly on the rotary trolley of the ring cooler. T...

AI Technical Summary

Problems solved by technology

However, the high-temperature flue gas produced by the annular cooler is only about 1 / 3 of the total flue gas produced by the annular cooler, and the remaining 2 / 3 of the medium and low-temperature flue gas is directly discharged into the atmosphere. The dust concentration in the air varies with different working conditions, and cannot continuously and stably meet the requirements of the national pollutant discharge standards

At the same time, the direct discharge of medium and low temperature flue gas into the atmosphere also causes a waste of energy.

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