Sludge low-temperature heat pump drying equipment

Abstract

The invention relates to sludge low-temperature heat pump drying equipment, which comprises a sludge drying chamber, wherein a sludge feeding and distributing device is arranged above one side of thesludge drying chamber; a heat pump system chamber is arranged at one side of the sludge drying chamber; a heat pump system is arranged in the heat pump system chamber; the sludge feeding and distributing device comprises a sludge feeding hopper and a sludge distributing machine which are arranged from top to bottom; the sludge drying chamber is provided with a sludge inlet; the distributing machine is connected with the sludge inlet; a sludge outlet is arranged at the bottom of the sludge drying chamber; and an air filtering device is arranged at the upper part of the sludge drying chamber. Aplurality of layers of conveyor mesh belts are arranged in the middle of the sludge drying chamber, a discharging device is arranged below the lowermost conveyor mesh belt, the discharging device is connected with the sludge outlet, an auxiliary fan is arranged between any two adjacent layers of conveyor mesh belts, and a plurality of main fans are arranged at the bottom of the sludge drying chamber. The sludge low-temperature heat pump drying equipment has the advantages of low drying energy consumption, no secondary pollution, high safety performance, compact structure and small occupied area.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a low-temperature heat pump drying equipment for sludge. Background technique [0002] The moisture content of sludge after dehydration treatment in municipal sewage treatment plants is generally about 80%, and it contains a large amount of toxic and harmful substances, which are unstable in nature and difficult to be used as resources. Drying treatment is extremely necessary. Conventional sludge drying technologies include paddle drying, fluidized bed drying, drum drying, etc., but all have problems such as high drying temperature, complex equipment structure, and serious odor pollution. However, the low-temperature heat pump drying technology has the unique advantages of low drying temperature, small footprint, high drying efficiency, and little pollution to the environment. [0003] The low-temperature heat pump drying equipment adopts the principle of dehumidificat...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the sludge heat pump drying equipment is either due to high drying temperature and poor sealing of the equipment, resulting in strong odor during the drying process, causing secondary pollution to the environment, or insufficient energy utilization of the heat pump system or sludge pretreatment The effect is poor, resulting in unsatisfactory drying effect and high energy consumption of equipment

Images