Desulfurized gypsum slurry water collecting system and construction method

Abstract

The invention provides a desulfurized gypsum slurry water collecting system and a construction method. The desulfurized gypsum slurry water collecting system comprises a filter box, a vacuum device and a clean water tank; the filter box comprises a box body and a stirring and flushing device, wherein the top of the box body is provided with a slurry inlet and a flushing water inlet, the bottom ofthe box body is provided with a bottom flow port, and the side wall of the box body is provided with an overflow port; the bottom flow port and the overflow port are both communicated with a thick slurry discharging device through pipes respectively; a vacuum chamber is formed in the inner bottom of the box body; a filter cloth tray is arranged above the vacuum chamber, and a filter cloth is laidon the filter cloth tray. The stirring and flushing device comprises a driving motor, a stirring rod and a stirring paddle; the top of the stirring rod penetrates through the top of the box body, thestirring paddle is connected to the bottom of the stirring rod, and atomizing nozzles are arranged at the bottom of the stirring paddle at intervals. The vacuum device is communicated with the vacuumchamber through a pipe, the clean water tank is communicated with the vacuum device through a pipe, and clean water can be used as functional water for a desulfurization system, so that the water balance of the desulfurization system is maintained.

Description

technical field [0001] The invention relates to the technical field of flue gas desulfurization, in particular to a desulfurization gypsum slurry water collection system and a construction method. Background technique [0002] Maintaining the water balance of the desulfurization system is related to the normal operation of the desulfurization system. Therefore, the liquid level of the absorption tower is an important detection index for the operation of the desulfurization system. However, in actual engineering applications, the low load of the boiler and the plume treatment project lead to a decrease in the evaporation of the flue gas in the desulfurization system, and the reduced water remains in the absorption tower, resulting in a continuous rise in the liquid level of the absorption tower. However, part of the functional water of the desulfurization system cannot be reduced (for example: mechanical seal water, vacuum pump seal water, belt seal water, filter cake flushin...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a desulfurization gypsum slurry water collection system and construction method to solve the problem of reducing the evaporation of flue gas in the desulfurization system caused by the low load of the boiler and the plume treatment project, and the reduced water is retained in the absorption tower, causing the absorption tower The liquid level continues to rise, reducing the flushing water volume and flushing frequency of the mist eliminator, which has caused hidden technical problems for the operation safety of the mist eliminator

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