wet dust collector

Abstract

The invention provides a wet-type dust collector. An atomizer nozzle for spraying water to a converter exhaust gas is arranged at an upper part of a secondary dust collector, and a flashboard (31) is arranged under the secondary dust collector. A shell (30) is contracted at the position of the flashboard (31) and has a hole shrinkage part (30a), a minimum diameter part (30b) and a hole enlargement (30c). In addition, a mixed fluid of water and exhaust gas flowing through a gap between the flashboard (31) and the inner surface of the hole shrinkage part (30a) further downwardly flows through the inner surface of the shell (30) in a layered manner, then is collected by a support part (34) just under the flashboard (31), and then is drained from an exhaust port (35). As for the mixed fluid just under the flashboard (31), dust is effectively mixed in water, so that the dust removal rate is relatively high, thereby improving the dust collection property.

Description

technical field [0001] The present invention relates to a wet dust collector for collecting dust contained in exhaust gas by impregnating it in water, and more particularly to a wet dust collector (secondary dust collector) for collecting dust from exhaust gas after refining in a converter. Background technique [0002] Liquid iron is refined by a converter to become molten steel, but since the exhaust gas generated from the converter refining contains dust and CO gas, the exhaust gas cannot be discharged into the atmosphere, and dust must be recovered from the exhaust gas to further recover CO gas. Figure 4 It is a figure which shows a converter facility. The molten iron is loaded into the converter 1, and oxygen is sprayed into the molten iron with a spray gun, but the converter exhaust gas generated during the refining is cooled in the pipeline 2b through the cover 2a and the pipeline 2b, and sent to the primary dust collector 3 . The converter exhaust gas is sprayed w...

AI Technical Summary

Problems solved by technology

[0005] In the prior art described above, the water sprayed from the nozzle 21 is mixed with the dust in the exhaust gas at the shutter 6, the dust is collected in the water, and the water containing the dust is removed from the exhaust gas by the elbow separator 7, but the two The dust collection performance of the secondary dust collector is at most 40mg / Nm 3 left and right, so there is a limit to improving the dust collection performance

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