Smoke discharge device of steel strip type reduction furnace

Abstract

The invention discloses a smoke discharge device of a steel strip type reduction furnace, which is arranged at the top of a heating hearth of the steel strip type reduction furnace. The smoke discharge device comprises flues, a smoke acquirer, a smoke discharge pipe and a smoke discharge fan; the flues are arranged at two ends of a furnace head and a furnace tail of the heating hearth; the smoke acquirer is arranged above the flues; a horn port in the lower end of the smoke acquirer is corresponding to smoke outlets of the flues, and the upper end is connected and communicated with the smoke discharge pipe from the side surface; and one end of the smoke discharge pipe is closed, and the other end is connected with an intake port of the smoke discharge fan. The smoke discharge device of the steel strip type reduction furnace is additionally provided with a tail gas purifying box; a spraying system, a purifying system and an exhaust way are arranged in the tail gas purifying box; a dust remover is arranged in a connecting pipeline between an exhaust port of the smoke discharge fan and the tail gas purifying box; and smoke discharged by the smoke discharge fan is filtered by the dust remover to enter the tail gas purifying box, is exhausted from the exhaust way after being purified by the spraying system and the purifying system. The smoke discharge device of the steel strip type reduction furnace prominently improves the energy utilization rate, reduces the hearth temperature difference, prominently reduces the discharge, and purifies the ecological environment.

Description

technical field [0001] The invention relates to the technical field of waste gas emission treatment, in particular to a reduction furnace smoke exhaust device. Background technique [0002] Steel belt reduction furnace is one of the key equipments in the production of metal powder. At present, the most widely used belt furnace in China is generally heated by electricity, gas and oil. The traditional belt furnace heating method is to heat the belt furnace on both sides of the furnace. The burners are arranged crosswise, and each burner corresponds to a combustion chamber. The flame burns under the muffle. There are multiple smoke exhaust holes on the top of the furnace, so that the combustion smoke can be discharged from the multiple smoke exhaust holes on the top. Each smoke exhaust hole Corresponding to a flue gas collection port, this kind of smoke exhaust device has many defects: on the one hand, the combustion flue gas is discharged from multiple exhaust holes on the top...

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Problems solved by technology

[0002] Steel belt reduction furnace is one of the key equipments in the production of metal powder. At present, the most widely used belt furnace in China is generally heated by electricity, gas and oil. The traditional belt furnace heating method is to heat the furnace on both sides of the belt furnace. The burners are arranged crosswise, and each burner corresponds to a combustion chamber. The flame burns under the muffle. There are multiple smoke exhaust holes on the top of the furnace, so that the combustion smoke can be discharged from the multiple smoke exhaust holes on the top. Each smoke exhaust hole Corresponding to a flue gas collection port, this kind of smoke exhaust device has many defects: on the one hand, the combustion flue gas is discharged from multiple exhaust holes on the top, resulting in a large temperature difference between the upper and lower sides of the furnace, which affects the quality of reduced iron powder; the heat source cannot be fully utilized, resulting in Energy waste; on the other hand, the flue gas burned in the furnace is directly or indirectly discharged into the atmosphere, which seriously pollutes the atmospheric environment and destroys ecological resources

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