Turbulent scrubbing flue gas dust removal and desulfurization device

Abstract

The invention discloses a turbulent washing flue gas dust removal desulfurizer which comprises a washing tower, a comprehensive tower and a washing nozzle. A quenching zone is arranged between the inlet end of the washing tower and a turbulent washing zone. At least one quenching nozzle is arranged inside the quenching zone. The quenching nozzle comprises an annular nozzle base and a liquid inlet pipe. The annular nozzle base is internally provided with a liquid inlet communicated with the liquid inlet pipe. A spiral groove is formed in the inner wall of the annular nozzle base in the circumferential direction. The two sides, opposite to the spiral groove, of the annular nozzle base are symmetrically provided with liquid flow divergence guiding faces in an annular conical surface shape. The depth of the spiral groove is gradually decreased in the spiral extending direction of the spiral groove. The initial end of the spiral groove is communicated with the liquid inlet. A pair of inclined guiding walls used for guiding liquid to the two liquid flow divergence guiding faces on the two sides of the annular nozzle base are arranged at the portion, opposite to the tail end of the spiral groove, on the inner wall of the annular nozzle base. The turbulent washing flue gas dust removal desulfurizer has the advantages of being reasonable in structural arrangement, prolonging the service life, improving the stability, and meanwhile having the defoaming effect.

Description

technical field [0001] The invention relates to a gas purification treatment device, in particular to a turbulent washing flue gas dust removal and desulfurization device. Background technique [0002] In recent years, environmental protection requirements at home and abroad have become higher and higher, and all kinds of furnace flue gas and petrochemical tail gas must be discharged after dust removal and desulfurization. Through retrieval, the Chinese patent publication number is: CN1488424A discloses a turbulent scrubbing type gas treatment device, its structure includes a washing tower, a liquid sump, a demister and a washing nozzle, and the washing tower is a cylindrical tower-shaped structure , which is equipped with a dynamic balance exchange field for flue gas and washing liquid, and performs turbulent washing, dust removal and desulfurization for the flue gas to be treated. The washing tower is connected with the liquid collection tank and demister through bellows t...

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Problems solved by technology

[0003] However, there are still the following problems in the use of this equipment: the temperature of furnace flue gas and petrochemical tail gas is often high, and the lining layer of the washing tower above the turbulent washing liquid (dynamic equilibrium exchange field) is often protected by the overflow liquid film of the overflow weir. However, the flue gas discharged after turbulent washing, dedusting and desulfurization, gas-liquid separation and defoaming by the demister in the liquid collection tank and its tank body has a relatively high water foam content, and the chimney emits white smoke or drags Serious tail phenomenon

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