Flume gas desulfuration method and composite circulated convection absorbing tower

Abstract

The invention discloses a desulfuration method of flue gas and composite circulating convective absorption tower, which comprises the following steps: letting the flue gas enter the reaction region at the bottom of tower; lifting the purified gas continually; obtaining the purified flue gas through middle reaction region within hopper liquid-collecting reflux device and composite controllable blocking device; draining the fog through upper reaction region. The composite circulating convective absorption tower is characterized by the following: the paste reaction pond is set in the bottom of tower cylinder with gas outlet on the top; the tower cylinder contains paste spray device, hopper liquid-collecting reflux device, composite controllable blocking device, limestone paste spray device, lower defroster and upper defroster; the plaster paste outlet is set in the bottom of paste reaction pond tower cylinder.

Description

Technical field: [0001] The invention relates to a flue gas desulfurization method and desulfurization equipment. It is especially suitable for flue gas desulfurization produced in the production of large-scale thermal power plants, coking plants and other enterprises. Background technique: [0002] With the development of economy and the continuous increase of energy consumption, SO 2 Emissions are increasing day by day, and the problem of acid rain has become more and more serious. Acid rain has seriously endangered human health and living environment. Whether it is the national government, or the existing power generation, coking and other enterprises that are running or are about to be built, as well as relevant departments and technical experts, the SO 2 Both the total amount of emissions and the concentration of emissions have attracted great attention. A lot of fruitful work has been done and some achievements have been made, but the problem is still serious. [00...

AI Technical Summary

Problems solved by technology

[0004] (1) The distribution of the flue gas flow field is uneven, especially the absorption tower with a large diameter

[0005] (2) The distribution of slurry is uneven, the adjustment range of liquid-gas ratio is small, it cannot adapt to the change trend of coal type, the desulfurization efficiency is unstable, and the system operation flexibility is small

[0006] (3) The gas-liquid mass transfer effect is poor, and the utilization rate of absorbent is low

[0007] (4) High operating costs

[0008] (5) The quality of the by-product gypsum is poor, it cannot be comprehensively utilized on a large scale, and it is difficult to dispose of it, resulting in a huge waste of resources

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