Wet-method desulphurization device for micropressure flue gas and seawater or reclaimed water desulphurization device

Abstract

The invention discloses a wet-method desulphurization device for micropressure flue gas and a seawater or reclaimed water desulphurization device. In the wet-method desulphurization device for the micropressure flue gas, a water pump is used for pumping filtered lime water in a water collecting tank into a desulphurization water tank; the flue gas flows through a main flue pipe and an organic silicon rubber flue pipe and comes out from a hard plastic pipe below blended cotton cloth on the desulphurization water tank, and reaction that SO2+Ca(OH)2=CaSO3+H2O is generated; nitrogen in the flue gas slowly flows through the wet blended cotton cloth on the desulphurization water tank, and then is discharged from a chimney above the desulphurization water tank; sewage after desulfurization passes through a water baffle and reaches an aeration tank; air from an air blower passes through sponge laid on the aeration tank via a main air pipe and a rubber air pipe, and is blown out from the hard plastic pipe; calcium sulfate is generated in the aeration tank, and then flows into a sedimentation basin for settling; lime water overflowing from the sedimentation basin flows into the water collecting tank, and is pumped out by the water pump for recycling. In the seawater or reclaimed water desulphurization device, the flue gas firstly enters below the blended cotton cloth of an absorption water tank, and then flows through the desulfurization water tank, the aeration tank and the sedimentation basin for treatment.

Description

Technical field: [0001] The invention relates to a wet desulfurization device for micro-pressure flue gas and a seawater or middle water desulfurization device. Background technique: [0002] The water pump of the existing wet desulfurization device draws lime water from the sump, and then sprays atomized water from the Venturi nozzle of the desulfurization tower, and the atomized lime water reacts with sulfur dioxide in the flue gas in the desulfurization tower to generate calcium sulfite. After the water pump of the existing seawater desulfurization device pressurizes the seawater, atomized water is also sprayed from the Venturi nozzle of the desulfurization tower, and the sulfur dioxide in the flue gas in the desulfurization tower dissolves in the atomized seawater, and then falls into the seawater pool; The sulfur dioxide dissolved in the seawater reacts chemically with the lime water in the seawater pool to form calcium sulfite. The seawater containing calcium sulfite f...

AI Technical Summary

Problems solved by technology

However, the pressure of the flue gas from the boiler of the power plant is very low, and it cannot be desulfurized by this method

In addition, the flue gas after desulfurization has to go through the mist eliminator to remove the water mist and the dust collector to remove the dust. In short, the process is complicated and the operation cost is high.

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