A large hydrogen-based shaft furnace reduction gas balance injection device

Abstract

This invention discloses a large-scale hydrogen-based vertical shaft furnace reducing gas uniform injection device, belonging to the field of metallurgical equipment technology. Its purpose is to improve the uniformity of reducing gas injection and ensure product quality. The technical solution is as follows: the device includes a central jet injector located at the bottom of the reduction section of the vertical shaft furnace and multiple peripheral nozzles. The peripheral nozzles are located on the inner side wall of the vertical shaft furnace and are evenly distributed along a circumference coaxial with the furnace. The inlet of each peripheral nozzle is connected to a gas supply pipe. The central jet injector is installed in the center of the vertical shaft furnace and connected to the gas supply pipe. This invention utilizes the central jet injector and peripheral nozzles to simultaneously inject reducing gas into the center and periphery of the hydrogen-based vertical shaft furnace, making the distribution of reducing gas inside the furnace more uniform. This avoids the problem of insufficient reaction of localized furnace charge due to uneven distribution of reducing gas, greatly improving the metallization rate of the furnace charge and ensuring product quality.

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