Drying system for sludge treatment

Abstract

The invention relates to a drying system for sludge treatment. The drying system comprises a casing, a sludge feeding device, a plurality of chain plate conveying devices, a guiding device, a thermal insulation device and a sludge output device, wherein the sludge feeding device is located above a sludge inlet of the casing, and the sludge output device is located below a sludge outlet of the casing; the plurality of chain plate conveying devices arranged in the casing are sequentially arranged from top to bottom, and sludge falls onto lower chain plate conveying devices from upper chain plate conveying devices with rotation of the chain plate conveying devices; the guiding device and the thermal insulation device which are arranged in the casing divide the inside of the casing into a drying chamber and a cooling chamber, the plurality of chain plate conveying devices are located in the drying chamber, and at least one chain plate conveying device is located in the cooling chamber; the guiding device for guiding hot air is placed at the bottom of the drying chamber and located above the thermal insulation device. The drying system can efficiently dry sludge and belongs to the technical field of sludge treatment.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a drying system for sludge treatment. Background technique [0002] In recent years, with the continuous improvement of sewage treatment capacity of sewage enterprises in my country's sludge treatment capacity, the growth rate of its output is also constantly increasing. As of the end of September 2015, according to survey results: a total of 3,830 sewage treatment plants have been built in municipal and county-level (including towns) cities across the country, with a sewage treatment capacity of 162 million cubic meters per day, and an annual production of tens of millions of tons containing Sludge with 80% water content. According to the survey and analysis report, more than 80% of the various types of sludge produced in our country have not been effectively treated, and most of them are randomly piled up randomly. There is no reasonable stacking plan and treatment, w...

AI Technical Summary

Problems solved by technology

[0006] 1. The untreated sludge is directly piled up in the dryer, with uneven distribution, less heating area and slow drying speed;

[0007] 2. Since the sludge is in the dryer, the heat needs to be transferred from the outside of the sludge to the inside, and the heat is not uniform, so it is difficult to fully dry all the sludge, and the drying efficiency is slow;

[0008] 3. Only a single drying unit is used for drying, which makes the drying speed slower and the effect worse

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