Dry process stack gas desulfur reaction tower with variation structure

Abstract

The invention proposes a dry flue gas desulfurization reaction tower with a variable structure, which includes a flue gas mixing chamber at the bottom of the desulfurization tower, a flue gas injection device, a fluidization section in the lower part of the desulfurization tower, a main reaction section in the middle of the desulfurization tower, and a desulfurization tower. The upper section of the upper section and the inlet of fresh desulfurizer particles on the tower body, the inlet of external recirculating particles, the atomized water nozzle, and the flue gas outlet, the main reaction section in the middle of the desulfurization tower and / or the upper section of the desulfurization tower adopts a variant structure. The main reaction zone in the middle of the desulfurization tower is composed of several sub-sections of the desulfurization tower with variable structures. The shape of the outlet section of each subsection of the desulfurization tower is different from the shape of the inlet section, and the outlet of the next section is the inlet of the previous section; the main reaction zone in the middle of the desulfurization tower The outlet cross-sectional area of ​​each desulfurization tower subsection is 1.1 to 1.5 times the inlet cross-sectional area.

Description

technical field [0001] The invention relates to a dry flue gas desulfurization reaction tower with variable structure, which belongs to the technical field of flue gas desulfurization, and relates to a large-scale tower body design in the technical field of dry flue gas desulfurization, especially for the circulation flow state of single tower and multiple beds Large-scale dry flue gas desulfurization process. Background technique [0002] The control of sulfur dioxide gas pollution has always been the focus of environmental protection in most countries in the world, and the pollutants produced by it are the largest source of pollution that has caused damage to the ecological environment in my country. At present, it has become the top priority of air pollution control in my country. [0003] At present, the treatment of sulfur dioxide generally adopts the wet lime-gypsum method (W-FGD) in foreign countries. Although the above-mentioned method has a good removal effect, it h...

AI Technical Summary

Problems solved by technology

The invention not only improves the flue gas desulfurization reaction efficiency in the tower, but also solves technical problems such as excessive particle separation load of external particle separation equipment (such as electrostatic precipitator, etc.) that affect large-scale flue gas desulfurization technology.

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