Device and method for reducing low-temperature smoke particulate matter emission in cold procedure of sinter ring

Abstract

The invention provides a device for reducing low-temperature smoke particulate matter emission in a cold procedure of a sinter ring. A ring cold machine is provided with a sinter ring cold machine cover, and a medium-temperature opening of the sinter ring cold machine cover is connected with a smoke waste heat organic Rankine cycle power generation system through an air pipe. The smoke waste heat organic Rankine cycle power generation system comprises an organic working medium waste heat boiler and a turbine generator connected with the organic working medium waste heat boiler. The air pipe is connected with an inlet of the organic working medium waste heat boiler, and an outlet of the organic working medium waste heat boiler is communicated with an inlet of a cloth bag dust remover. A low-temperature opening of the sinter ring cold machine cover is connected with the inlet of the cloth bag dust remover. An outlet of the cloth bag dust remover is connected with an exhaust cylinder. The invention further provides a processing method. The waste heat in a sinter ring cold medium and low temperature smoke directly exhausted into the atmosphere at present is fully utilized, the temperature is reduced so that the waste heat can meet the condition that normal-temperature cloth bag efficient dust removing can be directly conducted, dust particles in the smoke can be effectively removed, and the pollution of the dust in the smoke to the environment is greatly eliminated.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a system device and method for reducing the emission of flue gas particles. Background technique [0002] The iron and steel industry is one of the industries with the largest resource consumption and pollution emissions in various industrial production fields in my country, and the sintering process is the main source of pollution in iron and steel enterprises, and it is the monitoring focus of governments at all levels. [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°C when it is unloaded from the tail of the sintering machine. For equipment damage and environmental pollution, it is necessary to cool the red-hot sinter to below 150°C. The sintering ring cooler is to continuously and evenly distribute the sintered cake unloaded from the sintering mac...

AI Technical Summary

Problems solved by technology

The high-temperature flue gas obtained by waste heat utilization is about 1 / 3 of the hot flue gas produced by the sintering ring cooler, and the remaining 2 / 3 of the medium and low-temperature flue gas is directly discharged into the atmosphere. The dust concentration varies with different working conditions, ranging from tens of mg / m3 to thousands of mg / m3, which cannot continuously and stably meet the requirements of the national pollutant discharge standard

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