Slurry feed system of desulfurized limestone

Abstract

The invention discloses a slurry feed system of desulfurized limestone, comprising a plurality of limestone slurry boxes, wherein the limestone slurry boxes are connected in series though a communicating pipeline, the communicating pipeline is connected with a plurality of slurry pumping pipelines, the slurry pumping pipelines are connected with desulfurizing towers by slurry pumps, and each limestone slurry box is internally provided with a stirrer. By using the arrangement of the plurality of limestone slurry boxes and a mode of operation of the plurality of desulfurizing towers, non-stop can be guaranteed when overhauling, and the plurality of limestone slurry boxes are connected in series, so that when a part of the limestone slurry boxes is overhauled, the overhauled part can use the adjacent limestone slurry boxes to operate.

Description

Technical field [0001] The invention relates to the field of desulfurization, in particular to a desulfurized limestone slurry supply system. Background technique [0002] In the current limestone-gypsum flue gas desulfurization device, the limestone pulping system usually has a limestone slurry tank corresponding to a desulfurization absorption tower slurry supply system plan. Such a plan, due to the high solid content of the limestone slurry, about 25% , In order to prevent slurry deposition, the slurry tank agitator needs to operate for a long time, and it is inevitable that the agitator malfunctions. If the agitator and other equipment malfunction, the corresponding absorption tower slurry supply system will be out of service, affecting the normal operation of the absorption tower, causing The sulfur dioxide concentration in the flue gas at the outlet of the absorption tower exceeded the standard, and even caused the unit to shut down. Summary of the invention [0003] The pu...

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Problems solved by technology

[0002] In the current limestone-gypsum flue gas desulfurization device, the limestone pulping system is usually equipped with a limestone slurry tank corresponding to a desulfurization absorption tower slurry supply system scheme, such a scheme, due to the high solid content of limestone slurry, about 25% , in order to prevent slurry deposition, the agitator in the slurry tank needs to be operated for a long time, and it is inevitable to overhaul the agitator. If the agitator and other equipment are overhauled, the corresponding slurry supply system of the absorption tower will be shut down, which will affect the normal operation of the absorption tower and cause The concentration of sulfur dioxide in the flue gas at the outlet of the absorption tower exceeds the standard, and even causes the unit to shut down

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