Hot-pressing filtration and dehydration process of filtrated mud in cane sugar factory

Abstract

The invention provides a hot-pressing filtration and dehydration process of filtrated mud in a cane sugar factory and belongs to the technical field of sludge dehydration. The hot-pressing filtrationand dehydration process is characterzed in that the filtrated mud discharged by a vacuum suction filter in the sugar factory is diluted into slurry capable of being pumped by using water, the slurry is treated to reach a certain temperature, and then, pressure filtration equipment capable of performing re-extrusion on filter cakes is utilized for performing positive pressure filtration of the slurry and hot-pressing dehydration of the filter cakes, thereby realizing deep dehydration of the filtrated mud. The filtrate produced in the dehydration process can be recycled, thereby saving water forproduction; and after the slurry is filtered, the filter cakes can be washed by using hot water with a certain temperature, and then, hot-pressing dehydration is performed, thereby reducing sugar loss and promoting sugar recovery. The hot-pressing filtration and dehydration technology provided by the invention is energy-saving and reliable; and by adopting the dehydration technology provided by the invention, the moisture content of the delivered filtrated mud is greatly reduced, the content of sugar carried away by the filtrated mud is reduced, the sugar yield of the sugar factory is enhanced, the comprehensive utilization quality of the filtrated mud is improved, and the transport cost is reduced, thereby bringing obvious economic benefits for the sugar factory.

Description

technical field [0001] The invention relates to a sludge dehydration process, in particular to a hot-press filtration dehydration process for filter mud in a sugarcane sugar factory. Background technique [0002] Filter mud is a bulk waste of sugar production, which is the residue discharged from the filter after clarification of cane juice. At present, the total amount of sugarcane squeezed by each sugar factory in Guangxi is about 40 million tons per year, and the output of filter mud (calculated by 3% C) is about 1.2 million tons. At present, sugar factories generally use non-filter cloth vacuum suction filter to filter mud juice. After filtering, the water content of the filtered mud is high, reaching 70-75%, and the sweet water conversion degree is 2-2.5%. one of the sources. At the same time, due to the high moisture content of filter mud, it is not convenient for transportation, storage and use. In recent years, it has become less and less accepted by farmers, thus ...

AI Technical Summary

Problems solved by technology

At the same time, due to the high moisture content of filter mud, it is not convenient for transportation, storage and use. In recent years, it has become less and less accepted by farmers, thus becoming a burden on the environment.

[0003] In fact, filter mud can be used to produce bio-fertilizers, animal feed and other comprehensive utilization products. However, dehydration and drying is the bottleneck restricting the comprehensive utilization of filter mud. Therefore, it is urgent to develop a deep dehydration technology to promote the comprehensive utilization of filter mud. use process

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