Flue gas dust removal, denitration and waste heat utilization integrated device and treatment method thereof

Abstract

The invention relates to the technical field of fuel gas purification, and discloses a flue gas dust removal, denitration and waste heat utilization integrated device and a treatment method thereof. The device is connected with a position between a boiler economizer and a desulfurizing tower, and comprises a casing, wherein the interior of the casing is divided into a dust removal zone and a comprehensive reaction zone which are horizontally arranged side by side and communicated with each other through a baffle; a denitration zone and an air preheating zone are sequentially arranged in the comprehensive reaction zone along the flue gas flowing direction; a fuel gas inlet is formed in the side wall of the casing of the dust removal zone; a fuel gas outlet is formed in the side wall of thecasing at the bottom of the comprehensive reaction zone; a high-temperature dust removal module which can directly perform dust removal and filtering on 350 to 400 DEG C fuel gas is arranged in the dust removal zone; the denitration zone is arranged at the upper part of the comprehensive reaction zone; the air preheating zone is positioned under the denitration zone; an air preheater is arranged inside the air preheating zone. The device is simple in structure, low in economic cost and operation cost, simple in structure, good in dust removal effect, high in denitration efficiency and small inequipment volume.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, in particular to a flue gas dust removal and denitrification waste heat utilization integrated device and a processing method thereof. Background technique [0002] The flue gas produced by coal combustion contains a large amount of toxic and harmful substances and impurities such as carbon dioxide, sulfur dioxide, smoke and dust, which is an important factor causing air pollution. Emission Standards. [0003] In the more traditional flue gas purification system, denitrification, desulfurization, and dust removal are all equipped with independent purification reactors. The entire treatment system requires a lot of equipment, complex structure, large floor area, high investment and operating costs, and different functions. There are strong constraints among the various equipment, both in the selection of types and in the final purification effect, which in turn affects the overall p...

AI Technical Summary

Problems solved by technology

[0007] The technical problems to be solved are: the existing integrated device has a large volume, complex internal structure, high investment cost and operation cost, difficult process control, and poor stability of purification effect

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