Low-temperature heat pump sludge drying device for controlling double heat exchangers by single compressor

Abstract

The invention discloses a heat pump sludge low-temperature drying device controlled by a single compressor and double heat exchangers. The air channel composed of the fan below the multi-layer conveyor belt and the air filter device, evaporator and condenser arranged above the multi-layer conveyor belt is composed of evaporator, condenser, compressor, liquid storage tank, gas-liquid separation A heat pump system composed of a heat exchanger and an electronic expansion valve. The fans include the first fan and the second fan. The evaporator and the condenser are set in two groups. The dual air outlets of the two fans are used for dual-channel air supply, which increases the need for closed air. The air supply volume of the sludge drying chamber increases the humidity and heat exchange between the dry air and the sludge, avoids the uneven distribution of the dry air in the rectangular box, and simultaneously controls two sets of evaporators and condensers through one compressor, so that The effective heat exchange area of ​​the two sets of evaporators and condensers is increased, and the heat exchange effect is better.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a heat pump sludge low-temperature drying device in which a single compressor controls double heat exchangers. Background technique [0002] With the large-scale construction and operation of sewage treatment plants in my country, the sludge output has also increased significantly, and the threat to environmental pollution has become increasingly serious. However, most of the dehydrated sludge has a moisture content higher than 80% and contains a large amount of toxic and harmful substances. It is unstable in nature and difficult to utilize as resources. Therefore, proper drying treatment is extremely necessary before final disposal such as composting or incineration. The low-temperature heat pump drying technology in the drying technology has the advantages of small footprint, drying The unique advantages of high efficiency and little pollution to the environment. [0...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above-mentioned technical problems in the related art, the present invention proposes a heat pump sludge low-temperature drying device with a single compressor controlling double heat exchangers, which can solve the uneven drying effect and low energy utilization efficiency of the above-mentioned sludge low-temperature drying device. It is not high, and it is difficult to collect blanking materials

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