Kiln smoke gas desulfurization, dust removal and defogging ultra-low-emission system and method

Abstract

The invention relates to a kiln smoke gas desulfurization, dust removal and defogging ultra-low-emission system and method, and aims at providing the kiln smoke gas treatment system and method with the advantages that the desulfurization effect is good, and the smoke gas discharge quantity is low. The system comprises an adsorption tower main body, wherein a first cavity, a second cavity and a third cavity are arranged inside the absorption tower main body side by side; the upper part of the first cavity communicates with the upper part of the second cavity; the lower part of the second cavitycommunicates with the lower part of the third cavity; the lower part of the first cavity is provided with an inlet flue; a smoke gas uniform distributor and a primary desulfurization device are arranged in the first cavity; the primary desulfurization device is positioned above the smoke gas uniform distributor. A secondary desulfurization device is arranged in the second cavity. A primary dust removal and defogging device, a cleaning device and a second dust removal and defogging device are arranged in the third cavity; the cleaning device is positioned above the primary dust removal and defogging device; the secondary dust removal and defogging device is positioned above the cleaning device; a pure smoke gas pipeline is arranged at the upper part of the third cavity.

Description

technical field [0001] The invention relates to the field of flue gas purification, in particular to an ultra-low emission system and method for kiln flue gas desulfurization, dust removal and mist removal. Background technique [0002] At present, wet desulfurization or semi-dry desulfurization is mostly used for desulfurization of kiln flue gas, and the desulfurization effect can reach 100mg / Nm 3 Below, the dust removal effect can reach 50mg / Nm 3 The following, but with the improvement of environmental governance standards, the introduction of ultra-low emission and zero emission requirements for sulfur-containing flue gas, the country’s minimum implementation of flue gas export standards for smoke, SO 2 and NO x The emission standard is 10mg / Nm 3 、35mg / Nm 3 and 50mg / Nm 3 . However, the existing flue gas desulfurization methods are difficult to meet the current emission requirements of the country, and the original technology is difficult to meet the environmental pr...

AI Technical Summary

Problems solved by technology

However, the existing flue gas desulfurization methods are difficult to meet the current emission requirements of the country, and the original technology is difficult to meet the environmental protection ultra-low emission standards

[0003] Aiming at the problems of poor desulfurization effect, high operating cost, high sulfur content and dust content in the exhausted flue gas in related technologies, no effective technical solutions have been proposed so far.

Images