Novel flash furnace sulfation device

Abstract

The invention discloses a novel flash furnace sulfation device, and belongs to the technical field of metal smelting. The novel flash furnace sulfation device comprises a flash furnace, the flash furnace comprises a sedimentation tank, an uptake flue and a sulfation device body, the sedimentation tank is communicated with the sulfation device body, the sulfation device body comprises a sleeve, the sleeve comprises a DN50 white steel pipe and a DN25 white steel pipe, the DN25 white steel pipe is arranged in the DN50 white steel pipe, and the sleeve is used for introducing pure oxygen and dry air, so that the smoke dust caking phenomenon at the opening part of the uptake flue is greatly improved, and even though the smoke dust caking phenomenon is not thoroughly eradicated, the smoke exhaust smoothness is not influenced, and the accident of cracking a boiler tube of the boiler is avoided; the serious smoke dust bonding phenomenon does not occur in a waste heat boiler and a subsequent smoke exhaust system; and water leakage accidents caused by low-temperature corrosion do not occur on furnace tubes around an sulfated air nozzle of the waste heat boiler, negative effects of blowing sulfated air are effectively controlled, sulfur loss is reduced, and loads of waste acid treatment procedures in sulfuric acid workshops are reduced.

Description

technical field [0001] The invention belongs to the technical field of metal smelting, and in particular relates to a novel flash furnace sulfation device. Background technique [0002] After years of development of the flash smelting technology, especially after adopting the central diffused concentrate nozzle and the oxygen-enriched smelting process, due to the increase in the oxygen utilization rate of the reaction tower, the oxygen content of the flash furnace flue gas entering the waste heat boiler decreases, resulting in the formation of dust Insufficient sulfation reaction, the result is that the dust contains more unsulfated metal oxides, and these oxides have a high melting point and strong adhesion, which is not easy to remove, resulting in waste heat boiler and subsequent exhaust The smoke system is blocked by soot, which is not conducive to the safe operation of the waste heat boiler and the smooth exhaust of the flash furnace. [0003] In order to solve the abo...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the metal oxides in the existing equipment have strong adhesion and are not easy to remove, causing the waste heat boiler and subsequent smoke exhaust system to be blocked by soot, which is not conducive to the safe operation of the waste heat boiler and the flash furnace. To solve the problem of smooth smoke exhaust, a new flash furnace sulfation device is proposed

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