Flue gas desulfurization device

Abstract

The invention discloses a flue gas desulfurization device. The flue gas desulfurization device comprises a box body, a spraying mechanism, a regenerating tank and a circulating pump, wherein the box body is provided with a gas inlet pipe and a gas outlet pipe; partition plates which are arranged in an up-down staggered manner are arranged in the box body to divide the bottom of the box body into a first filter tank and a second filter tank; the bottoms of the first filter tank and the second filter tank are respectively connected with a liquid discharging branch pipe of a liquid discharging pipe; the spraying mechanism comprises a first liquid inlet pipe, a second liquid inlet pipe, and a first liquid inlet branch pipe, wherein a first desulfurizing agent is introduced into the first liquid inlet pipe; the first liquid inlet branch pipe is connected with the second liquid inlet pipe; the first liquid inlet pipe is connected with the second liquid inlet pipe; the first liquid inlet pipe and a spraying head are arranged at the top of the box body; a first liquid inlet which is connected with the liquid discharging pipe is formed in one side surface of the regenerating tank; a liquid outlet is formed in the side surface opposite to the first liquid inlet; a second desulfurizing agent is arranged at the bottom of the regenerating tank; the circulating pump is connected with the liquid outlet of the regenerating tank and the second liquid inlet pipe. The flue gas desulfurization device disclosed by the invention has a good desulfurization effect; the feculence cleaning operation of the regenerating tank is simple, and the desulfurizing agent in the regenerating tank is not required to be discharged, so that raw materials are saved.

Description

technical field [0001] The invention relates to the technical field of air pollution prevention and control, in particular to a flue gas desulfurization device. Background technique [0002] my country is a big coal-burning country. Coal-fired accounts for 75% of primary energy, and 90% of sulfur dioxide emissions come from coal combustion. Among them, sulfur dioxide emissions cause acid rain, which seriously damages the ecological environment and affects people's health. [0003] At present, flue gas desulfurization technology is the main way to solve the pollution of flue gas emissions. Among them, the double-alkali flue gas desulfurization technology uses sodium-based desulfurization agent to absorb sulfur dioxide, and then discharges the desulfurization product into the regeneration tank for reduction and regeneration with calcium hydroxide, while the regenerated Sodium-based desulfurizer can be recycled. Because of the large solution of sodium hydroxide in water, this ...

AI Technical Summary

Problems solved by technology

Because of the large solution of sodium hydroxide in water, this method will not cause supersaturated crystallization, cause fouling and blockage of pipelines, and reduce investment and operation costs. It is widely used in desulfurization process, but the existing desulfurization tower is relatively High, difficult to arrange, cumbersome to clean, poor desulfurization effect, and when the regeneration tank is cleaning the sediment, it will disturb the circulating water, and the sediment at the bottom of the tank will be stirred up, causing the circulating water to become turbid, resulting in a change in the effect of the regeneration tank sedimentation and desulfurization agent regeneration Difference

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