Horizontal concentric double-layer sludge thin-layer drying equipment

Abstract

The invention discloses horizontal concentric double-layer sludge thin-layer drying equipment, belonging to the technical field of municipal sewage/sludge drying. The equipment comprises a left bearing (1), a left bearing cap (2), a left end cover (3), a steam pipe (4), a support wall (5), an external evaporation cylinder outer cylinder (6), an external evaporation cylinder inner cylinder (7), a horizontal scraper blade (8), an inclined scraper blade A (9), a heat conducting oil pipe (10), a right end cover (11), a scraper blade arm (12), a rotary wall (13), a right bearing cap (14), a rotating shaft (15), a right bearing (16), an internal evaporation cylinder support bearing (17), an internal evaporation cylinder outer cylinder (18), an internal evaporation cylinder internal cylinder (19), an inclined scraper blade B (20), a sludge outlet pipe (21), a sludge inlet pipe (22), a scraper blade arm restraint ring (23) and a scraper beam support bearing (24). The horizontal concentric double-layer sludge thin-layer drying equipment has the advantages of traditional thin-layer drying equipment; in addition, the axial length of the equipment is shortened, the layout of a plant can be improved, sludge with water content of 85%-70% can be dried into sludge with water content of 50%-35%.

Description

technical field [0001] The invention belongs to the technical field of urban sewage sludge drying, in particular to a horizontal concentric double-layer sludge thin-layer drying equipment. Background technique [0002] With the development of my country's economy, the discharge of urban wastewater is increasing day by day, and the production capacity of sludge plants has also been greatly increased. Sludge treatment and disposal have gradually become the focus of attention at home and abroad. At present, the sludge disposal methods in my country mainly include sanitary landfill, composting, direct land use and incineration. The water content of sludge is the key to restricting sludge disposal. The water content of sludge from 95% to 60% is the starting point of landfill and composting, and from 95% to 50% is the starting point of incineration. The traditional mechanical dehydration method can reduce the moisture content of the sludge to about 75%. To further reduce the mois...

AI Technical Summary

Problems solved by technology

Existing drying technologies and equipment such as drum sludge drying equipment and multi-stage disc sludge drying equipment mainly rely on sludge back-mixing, and fluidized bed sludge drying equipment relies on convective heat transfer. They all have the disadvantages of low heat transfer efficiency, large heat loss, and high dust...

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