Heating furnace waste gas multi-pollutant cooperative treatment system

Abstract

The invention discloses a heating furnace waste gas multi-pollutant cooperative treatment system. The heating furnace waste gas multi-pollutant cooperative treatment system comprises a soot purification system and an air smoke purification system. The air smoke purification system comprises an SCR denitration reactor, a desulfurization reaction tower and a bag type dust collector. The front end ofa flue gas inlet of an SCR denitration reactor in the soot purification system is connected with a soot primary heat exchanger and a soot secondary heat exchanger through a pipeline. The soot secondary heat exchanger is connected with an air heat furnace. The front end of a flue gas inlet of the SCR denitration reactor in the air flue purification system is connected with an air smoke primary heat exchanger and an air mixing device through a pipeline. The air mixing device is connected with the soot secondary heat exchanger. By means of the system, waste gas purification, waste heat recoveryand combined temperature rise of a heating furnace can be synchronously conducted. The system is high in purification efficiency, sulfur dioxide, nitrogen oxides and particulate matters in waste gas can be effectively removed, and a new standard emission limit requirement or an ultra-low emission index can be completely met.

Description

technical field [0001] The invention belongs to the technical field of prevention and control of industrial flue gas pollution, and relates to a multi-pollutant collaborative treatment system for heating furnace waste gas, in particular to a steel rolling heating furnace waste gas purification system. Background technique [0002] The heating furnace is a reprocessing equipment for heating materials or workpieces, and is also a device for heating materials or workpieces. [0003] The waste gas produced after the combustion of the heating furnace gas mainly includes SO2, NOx, smoke and dust, etc. The pollutants are discharged continuously in an organized elevated point source, and the pollution to the atmospheric environment due to the large amount of waste gas discharge can no longer be ignored. [0004] In April 2019, the Ministry of Ecology and Environment, the Development and Reform Commission and other departments jointly issued the "Opinions on Promoting the Implementat...

AI Technical Summary

Problems solved by technology

[0006] Literature review shows that currently domestic heating furnace NOx adopts low-nitrogen combustion technology of circulating flue gas, but NOx still cannot meet the national environmental protection emission requirements, and there is a lack of particulate matter and sulfur dioxide treatment technology

Images