Explosion suppression system and method applied to steel converter gas recovery

Abstract

The invention provides an explosion suppression system applicable to steelmaking converter gas recovery and a method thereof. The system comprises a detection device, a safety device and a control device; the detection device comprises a gas detector and an explosive detector; the safety device comprises an explosion suppressor and an explosion unloading valve; the explosion suppressor is used for blocking the explosive development process in a converter gas conduit and suppressing the explosion within a safety range, and the control device receives a signal from the detection device, and controls the safety device to operate according to the signal. In the method, the possible explosion is prejudged according to concentration detection of CO and O2 and then explosion warning alarm is sent out in the converter smelting process; a suppressant is timely sprayed at the conduit downstream when initial explosion occurs, thus blocking the explosive development process and finally suppressing the explosion within the safety range; meanwhile, explosion pressure is unloaded from the conduit so as to ensure the production safety of converter equipment.

Description

technical field [0001] The invention relates to the technical field of safe recovery of steelmaking converter gas and sensible heat thereof. In particular, it relates to an explosion containment system and method after an initial explosion occurs in a steelmaking converter gas pipeline. Background technique [0002] At present, in the iron and steel smelting industry, for the recovery of blast furnace gas and converter gas, the gas wet recovery system (OG method) or gas dry recovery technology (LT method) is basically adopted, of which the OG method accounts for more than 90%. Taking steel-making converters as an example, among the more than 550 existing converters in my country, more than 50 have recovered converter gas, of which only two 250-ton converters at Baosteel and three 120-ton converters at Laiwu Steel have used the gas dry process Recycling technology (LT method), the rest almost all adopt OG method. Whether it is the OG method or the LT method, a common feature...

AI Technical Summary

Problems solved by technology

Once a gas explosion occurs, it will greatly endanger the safety of converter equipment and production personnel

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