NITROGEN GAS INJECTION CONTROL DEVICE OF A BURDEN DISPENSER AT THE BLAST FURNACE WITH BELL-LESS TOP AND A METHOD THEREOF

摘要

The present invention relates to a nitrogen gas blowing control device and method of the bellows blast furnace charge distributor, and specifically, a plurality of thermometers for detecting the temperature of the rising gas in the furnace raised into the assembly chute; A transmitter which receives a temperature and transmits the signal as an electrical signal, and a controller which receives the electrical signal from the transmitter and determines a flow rate and a blowing time of nitrogen blowing according to the temperature of the assembly chute and outputs a control signal; And a collection chute nitrogen injection automatic control valve configured to receive the control signal from the controller and perform opening / closing control of the nitrogen injection line. And a pressure guiding tube for detecting pressure in the blast furnace and pressure in the charge dispenser housing; A differential pressure transmitter for detecting a difference in blast furnace pressure detected in the pressure guiding pipe and a pressure difference in the charge distributor housing; A converter for converting and outputting the detected differential pressure into an electrical signal; A nitrogen flow rate setting unit which receives an electrical signal from the converter and sets a flow rate of blown nitrogen; And a nitrogen flow rate control valve for controlling the flow rate of nitrogen injected into the charge distributor housing according to the flow rate set by the nitrogen flow rate setting device. The nitrogen gas injection control is also possible by detecting the differential pressure.;Nitrogen gas, blow control