Filtering device for dehydrating gypsum generated by desulfurization

Abstract

The invention belongs to the technical field of dehydration filtering devices, and particularly relates to a filtering device for dehydrating gypsum generated by desulfurization. The filtering device comprises a filtering cavity and an external fixed base plate, wavy sheets are arranged on both sides of the inner cavity of the filtering cavity, and a control box is mounted above the external fixed base plate; and a distance measuring instrument positioned right above the filtering cavity is fixedly mounted at the bottom of the external fixed base plate. A vibrating device is arranged in the filtering cavity, a sealing box is used as power to shake a fluff sheet plate, gypsum in the filtering cavity is precipitated, water is floated at the upper part of the inner cavity of the filtering cavity, then the distance measuring instrument is used for detection, and a controller in the control box is used for controlling the lifting height of a lifting device and adjusting the lifting height of the lifting device. Thus a water absorption device below the lifting device continuously adsorbs water in the upper-layer inner cavity of the filtering cavity.

Description

technical field [0001] The invention belongs to the technical field of dehydration filter devices, and in particular relates to a filter device for dehydration of gypsum produced by desulfurization. Background technique [0002] Usually, the flue gas in a power plant contains a large amount of sulfur oxides, so it must be treated by a desulfurization device before it is discharged to meet the emission standards. Limestone is generally used for flue gas desulfurization, and the thermal power plants of this system all use Vacuum belt dehydrator is used for solid-liquid separation of tail products. The vacuum belt dehydrator is a secondary dehydration equipment for gypsum slurry, which is a kind of equipment for separating the solid and liquid of gypsum slurry, including frame, filter cloth, belt and vacuum box. Among them, the filter cloth is the main part to achieve solid-liquid separation. Its working principle is that the gypsum slurry is continuously loaded and spread on ...

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Problems solved by technology

[0003] However, the filter cloth runs on the belt relying on the skirt, and the skirt runs with the belt, and once it passes through the driving roller and the driven roller, expansion and contraction deformation will occur once, but with the prolongation of the operating cycle, the skirt will undergo fatigue deformation, The adhesion between the skirt and the belt decreases, and the skirt is easy to crack, which affects the normal use of the device, and the maintenance of the filter cloth is more difficult and complicated. In order to solve the above problems, this application proposes a filter device for dehydration of gypsum produced by desulfurization

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