Novel flue gas purification tower

Abstract

The invention discloses a novel flue gas purification tower which comprises at least two stages of purification chambers, namely, a drying purification chamber and a main purification chamber from bottom to top. The two stages of purification chambers are of urn-shaped structures with narrow upper parts and narrow lower parts and wide middle parts, the lower end of the main purification chamber extends into the drying purification chamber and is communicated with the drying purification chamber, and a guide cylinder is arranged in the center of the communication joint. An arch shoulder is formed at the wider part of the drying purification chamber, a flue gas inlet connecting pipe is arranged at the arch shoulder, and absorbent slurry spraying devices are arranged in inner cavities of themain purification chamber and the drying purification chamber. Flue gas in the purification tower moves from bottom to top, and water drops in desulfurization slurry sprayed by flue gas in the dryingpurification chamber and the main purification chamber are subjected to a continuous self-circulation process of evaporation and condensation. In the self-circulation process, complex heat transfer and mass transfer effects are generated on the water drops and the flue gas, and flue gas purification is achieved. The novel flue gas purification tower has the advantages of being simple in structure,high in flue gas purification efficiency, free of waste water, low in operation and maintenance cost and the like.

Description

technical field [0001] The invention relates to the technical field of industrial flue gas purification, in particular to a flue gas purification tower. Background technique [0002] With the continuous improvement of national emission standards, the construction and operation costs of boiler flue gas desulfurization facilities have been greatly increased. The limestone / gypsum wet desulfurization process is the most widely used flue gas desulfurization process in China. This process uses the principle of spray washing to purify the flue gas. The spray liquid adopts the form of mechanical atomization, and the spray volume and spray liquid atomization The particle size directly affects the desulfurization effect. After the improvement of environmental protection standards, the desulfurization spraying liquid has increased from the initial three-layer spraying layer to the current commonly used five or more layers, and the power consumption of the desulfurization slurry cycle ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a new type of flue gas purification tower for the problems of complex system, high investment and operation cost, and high power consumption caused by the need to provide absorption liquid circulation power for multi-stage spraying in the existing flue gas purification.

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