Solar energy, high-temperature double heat source heat pump sludge dry system

Abstract

The invention relates to a drying device for wet materials. It includes a dryer and a heat pump. The dryer is equipped with a multi-layer belt conveying device, an air duct and an air inlet and outlet duct connected to the heat pump. The inlet of the dryer is equipped with a wet material feeding device, and the outlet outputs the dry material. , it is equipped with a solar air collector, with an auxiliary air inlet on the heat pump; a fan is installed on the solar air collector, and its air outlet passes through a pipeline with a valve and the auxiliary air inlet of the heat pump, dryer It is connected with the air inlet channel between the heat pump, and its air inlet is respectively connected with the air outlet channel between the dryer and the heat pump and the outside world through a pipeline provided with a valve. The invention greatly saves energy consumption, and the dried sludge realizes stabilization, reduction, harmlessness, and resource utilization. The invention has high degree of automation, less energy consumption, and good treatment effect.

Description

technical field [0001] The invention relates to a drying device for wet materials, in particular to a processing equipment capable of drying wet sludge in large quantities. Background technique [0002] At present, sludge drying has become an important means of sludge treatment, and has attracted the attention of environmental engineering circles including developing countries. The existing sludge drying methods mainly adopt mechanical drying, mainly including flash evaporation, thin film, spray, multi-effect evaporation and other types. Its technical principles are heat conduction, heat convection and heat radiation. However, using these technologies to dry sludge consumes a lot of energy. In order to ensure the safety performance of the drying system and avoid secondary pollution, it is necessary to have a complete set of equipment as a reliable guarantee, which greatly increases the cost of sludge treatment. Due to the one-time investment and high operating costs of slu...

AI Technical Summary

Problems solved by technology

However, using these technologies to dry sludge consumes a lot of energy. In order to ensure the safety performance of the drying system and to avoid secondary pollution, it is necessary to have a complete set of equipment as a reliable guarantee, which greatly increases the cost of sludge treatment.

Due to the one-time investment and high operating costs of sludge drying, many urban sewage treatment plants are "daunted", which seriously hinders the process of sludge treatment in small and medium-sized urban sewage treatment plants.

At present, many small and medium-sized urban sewage treatment plants are "overcrowded with mud", which has caused secondary pollution to the environment

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