Gas outburst spinning dive desulfurization dust cleaning apparatus

Abstract

The invention discloses a gas outburst cyclone desulfurization dust removal device, comprising a cooling defluorination device, a desulfuration absorbing tower and a defogger. The flue gas containing SO2 is first introduced into the cooling defluorination device to be eliminated most of HF gas by the sprayed alkaline liquor spray and fresh water, and the temperature is then reduced to below 80 DEG C. The cooled defluorination flue gas is sent into the desulfuration absorbing tower; after obtaining strong rotating momentum in a cyclone gas outburst pipe with a cyclone device, the flue gas is dashed into a slurry pond in tangential direction of the vents at the bottom of the pipe; the optimally distributed array form enhances the effect of rotary gas spraying into slurry liquid, strengthens the process of gas and liquid transformation, improves efficiency of desulfurization dust removal and reduces resistance loss. The flue gas after purification is emitted out after a multi-pipe cyclone centrifugal defogger. The gas outburst cyclone desulfurization dust removal device can realize efficiency of desulfurization above 95 percent and dust removal efficiency of higher than 90 percent, which can be used in purification process of flue gas in power plant, sintering smoke and other gases containing SO2.

Description

technical field [0001] The invention relates to a flue gas purification device, in particular to a flue gas wet desulfurization and dust removal device required by a power plant or a metallurgical enterprise. Background technique [0002] The flue gas emitted by power plants and metallurgical enterprises contains a relatively high concentration of SO 2 , causing direct harm to the ecological environment and human health. At present, my country has become the world's SO 2 The country with the largest emissions, so flue gas desulfurization is imperative. [0003] The most mature desulfurization process commonly used is the limestone-gypsum wet desulfurization technology, and the most commonly used absorption tower structure is the spray tower. Although the desulfurization efficiency of this type of tower can reach more than 95%, it has the disadvantages of small gas-liquid contact area and poor mass transfer effect; moreover, no matter what kind of flue gas inlet method is ...

AI Technical Summary

Problems solved by technology

However, this type of tower depends on the immersion depth of the bubble tube to improve efficiency, so the gas phase resistance is often high, which greatly limits the use of this tower type

Moreover, the inside of the bubble tube is easy to accumulate dust and scale, which increases the system resistance, reduces the service life of the bubble tube, and increases the maintenance intensity of the equipment.

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