Method for increasing collection of primary smoke of converter

Abstract

The invention discloses a method for increasing collection of primary smoke of a converter. The method comprises a charging operation step and specifically comprises steps as follows: a solvent raw material with a set value is added into converter bins, a master baiting valve on a master baiting pipe is opened, branch baiting valves of the bins are opened, the solvent raw material enters the master baiting pipe, a switching signal of a switch of the master baiting valve is fed back to a PLC (programmable logic controller) of an OG dust removal system, the PLC of the OG dust removal system controls a second venturi throat, the opening degree is operated from 30% to 70%, and corresponding stopping time is set as T, so that the requirement of smoke to a smoke channel is met under the operation condition of the maximum smoke amount. The method is high in adaptability, and the switching signal of the switch of the master baiting valve is fed back to the PLC of the OG dust removal system, so that when the second venturi throat in the OG dust removal system reaches the target position as required, the smoke channel meets the requirement for increase of the smoke amount, and the overflowing condition of smoke in the charging process of the converter is basically eliminated.

Description

technical field [0001] The invention relates to a method for improving primary flue gas collection of a converter. Background technique [0002] At present, the converter primary flue gas generated during the production process of the converter is processed by the supporting OG dust removal system and then recovered (the gas content is greater than 25%) and released (the gas content is less than 25%). Specifically, during the blowing and feeding process of the converter, the amount of flue gas generated in the converter is changing at any time, which requires the OG dust removal system for processing (washing) flue gas to have strong adaptability. That is to say, the opening degree of the "Erwen" throat of the OG dust removal system needs to be able to meet the requirements of different flue gas volumes. However, in the actual production process, due to the lag in the throat reaction of the "Erwen", during the feeding process of the converter, a large amount of flue gas gen...

AI Technical Summary

Problems solved by technology

When the blowing converter is feeding, a large amount of flue gas will overflow from the furnace mouth

This is mainly because it takes up to 8 seconds for the "Erwen" throat to reach the target value, and the limited flue gas channel provided by the lagging "Erwen" throat is difficult to meet the actual demand for a large amount of flue gas to pass through.

Images