Desulfurization tower bottom flushing and stirring device

Abstract

The invention discloses a desulfurization tower bottom flushing and stirring device which comprises a flushing assembly and a stirring assembly; the flushing assembly comprises a water inlet pipe, a shaft pipe, a gear ring and scraping plates, the shaft pipe is located in the gear ring and is coaxially arranged with the gear ring, and the scraping plates are circumferentially arranged between the shaft pipe and the gear ring and are fixedly connected with the shaft pipe and the gear ring; and the stirring assembly is arranged along the circumference of the gear ring, the stirring assembly comprises a motor and a gear, a motor shaft is sleeved with the gear, and the gear is meshed with the gear ring. According to the invention, gypsum precipitates at the bottom of the desulfurization tower can be efficiently impacted without dead angles, and a rotating and inclined scraping impact plate can also play a role in rotating and stirring, so that the stirring and mixing effects on precipitated gypsum are integrally realized, the concentration of gypsum in spraying liquid is ensured, and the maximization of the desulfurization effect is realized.

Description

technical field [0001] The invention relates to the technical field of desulfurization tower flushing, in particular to a desulfurization tower bottom flushing and stirring device. Background technique [0002] China is a big coal-burning country. Coal accounts for more than 75% of the total primary energy consumption, and the structure of primary energy dominated by coal will not change in the near future. Therefore, air pollution and its harm caused by sulfur dioxide have increasingly become an environmental concern of people. question. [0003] Flue gas desulfurization is the most effective and irreplaceable technology for reducing SO2 emissions. Among them, wet desulfurization technology has become the world's leading technology due to its advantages such as high desulfurization efficiency, wide application range, mature technology, rich absorbent resources, and commercial sales of by-products. The most widely used flue gas desulfurization process. In the wet desulfuri...

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Problems solved by technology

In the wet desulfurization process, the flue gas desulfurization is mainly carried out by spraying the empty tower. The desulfurization liquid circulation method adopts the internal circulation of the tower, and a slurry pool is set at the bottom of the desulfurization tower. A side-entry agitator is installed inside to prevent impurities from settling. However, the agitating blades of the side-entry agitator have a dead angle during the stirring process, which cannot achieve the effect of stirring and mixing, resulting in more gypsum deposits in the slurry tank, which reduces the spray rate. The content of gypsum in the shower liquid reduces the desulfurization efficiency of the desulfurization tower

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