Flue gas purification device for solid waste incineration boiler

Abstract

The invention discloses a solid waste incineration boiler flue gas purification device which comprises an absorption tower body, the bottom of the absorption tower body is provided with a slurry pond, and the bottom of the slurry pond is provided with a slurry collecting piece which is convenient to clean and can be used for collecting slurry generated by reaction. According to the flue gas purification device for the solid waste incineration boiler, gypsum generated by reaction of lime and flue gas in the slurry can be collected in a centralized mode through the arranged slurry recycling part, later cleaning can be facilitated, the slurry can be recycled, and the flue gas purification device can be used for purifying the flue gas of the solid waste incineration boiler and also can be used for purifying the flue gas of the solid waste incineration boiler. The concentrated slurry is also facilitated to absorb the flue gas, so that the flue gas purification stability is ensured.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, in particular to a flue gas purification device for solid waste incineration boilers. Background technique [0002] The boiler is a solid waste incineration boiler. In order to meet the relevant environmental protection requirements, the flue gas after the furnace must be purified. [0003] In order to meet the control requirements of SO2 emission concentration lower than 35mg / Nm3, smoke emission concentration lower than 5mg / Nm3, HCL lower than 50mg / Nm3 and dioxin 0.1ng / TEQ. In the existing flue gas purification of solid waste boilers, it is mainly necessary to reduce SO2. In the field of sulfur dioxide removal, there is mainly limestone-gypsum wet desulfurization. [0004] However, the lime content in the bottom of the absorption tower body (1) that reacts with the flue gas is relatively large. First, when the flue gas continuously enters and reacts with the slurry, it will react ...

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Problems solved by technology

[0004]However, the lime content in the bottom of the absorption tower body (1) reacting with the flue gas is relatively large. , will generate gypsum after reacting with the flue gas in the lime slurry water, and the gypsum will become muddy in the slurry water. When the reaction generates mud mixed in the slurry, it will affect the reaction rate of the flue gas and lime. Second, due to the slurry It occupies a large area. During the reaction, the slurry and lime at the bottom cannot be poured to the surface of the slurry, so that the slurry at the bottom cannot react completely during the flue gas reaction, which affects the incomplete reaction with sulfur dioxide. polluting the smoke

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