A kind of solid-liquid mixture processing method

Abstract

The invention relates to a method for treating a solid-liquid mixture, which includes the steps of transporting the solid-liquid mixture, pressing the solid-liquid mixture to remove water, and drying the solid-liquid mixture. In the step, a drying device is used Dry the solid-liquid mixture that has been squeezed and dewatered. The drying device includes a second rotating shaft, which is installed in the cavity of the furnace body. The second rotating shaft has a ventilating cavity, and several Air injection port, the air injection direction of the air injection port does not coincide with the stirring direction of the stirring shaft and the stirring direction of the blades; when drying the material, the hot gas is introduced into the cavity of the furnace body through the first air inlet The rotation of the second rotating shaft drives the stirring assembly on the second rotating shaft to continuously stir the materials along the radial and axial directions of the second rotating shaft, so that the materials can roll in the furnace body along the axial and radial directions of the second rotating shaft, increasing The time when the material is stirred increases the convective heat exchange area between the material and the hot gas.

Description

technical field [0001] The invention relates to the technical field of solid-liquid mixture treatment, in particular to a solid-liquid mixture treatment method. Background technique [0002] Sludge is the product of the sewage treatment process, which contains a large amount of organic matter, heavy metals and molds, etc. If no follow-up treatment is added, it will cause serious pollution to the environment. Therefore, it is often necessary to concentrate and dehydrate the sludge, but after this treatment The moisture content of the final sludge is usually above 70%, and the sludge needs to be further dried. [0003] In the prior art, the drying system used for sludge drying is mostly structured as the drying system disclosed in the Chinese patent document CN201058838Y, including a furnace body, a feeder connected to the feed port of the furnace body, and an air outlet of the furnace body. Connected spray tower. Among them, the furnace body includes a transmission shaft ar...

AI Technical Summary

Problems solved by technology

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defects of low drying efficiency, poor drying effect and complex structure of the drying system in the treatment of solid-liquid mixture (such as sludge) in the prior art, thereby providing a method that can improve drying efficiency. , Improve the drying effect and the solid-liquid mixture treatment method with simple structure

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