Blast furnace gas dosing and descaling device

• Main Authors: LONG XIAOMIN, LI JINGLIN, XIAO XINHAI, WANG CHENG, YANG FAN, YANG ZHIQIANG, WANG RUIQI, JIN YANAN, CHEN SHI, TANG MINGMING, FANG MIN, TAN QIULIANG, LIU YUNQUAN, WU BAIJING
• Format: Patent
• Language: Chinese; English
• Published: 01.10.2021
• Subjects: CHEMISTRY; MANUFACTURE OF IRON OR STEEL; METALLURGY; METALLURGY OF IRON

A blast furnace gas dosing and descaling device comprises a dosing spray head, a heating device, a dosing pump, a dosing box, a thermometer and a peephole. The dosing pump is arranged behind the dosing box, the heating device is arranged behind the dosing pump, a gas inlet valve is connected with the heating device, the thermometer is arranged between the heating device and the dosing spray head, and the peephole is formed in the front section of a boiler gas heater. When the boiler gas heater has the salt deposition condition, the purpose of removing the salt deposition of the gas heater is achieved by spraying the medicine into the front end of the gas heater, and the front and back pressure difference of the gas heater is maintained to be about 2 Kpa. For example, a replaceable tube box type structure is adopted for the gas heater, a novel anti-scaling material and an on-line cleaning technology are used, back row pipeline washing and drainage equipment is added, the gas heater is replaced through a boiler