Light gathering and frequency division type solar sludge drying and household heating integrated system and method

Abstract

The invention discloses a light gathering and frequency division type solar sludge drying system and a sludge drying method thereof. The light gathering and frequency division type solar sludge dryingsystem comprises a solar energy utilization module, a sludge drying module and a household heating module, wherein the solar energy utilization module comprises a frequency division heat accumulationpart and a power distribution control part; the frequency division heat accumulation part comprises a light gathering device 1, a photovoltaic cell 2, a frequency divider 3, a vacuum heat collectingpipe 4, a photovoltaic cell waste heat collecting pipe 5, a phase change heat storage box 6 and a heat exchanger 7; a first pump 29 drives a heat carrier to flow in a heat carrier circulating flow path composed of the vacuum heat collecting pipe 4, the photovoltaic cell waste heat collecting pipe 5 and the heat exchanger 7; and a sludge drying chamber 8 comprises an air inlet 25 for feeding hot air generated by the frequency divider 3 through a fan 20, a sludge inlet 26 for feeding the sludge to be dried, an air outlet 27 for discharging the hot air and a sludge outlet 28 for discharging the dried sludge.

Description

technical field [0001] The invention relates to the technical field of sludge drying, in particular to a concentrating frequency division type solar sludge drying, an integrated household heating system and a sludge drying method. Background technique [0002] With the continuous increase of urban sewage treatment plants, the output of urban sludge has also increased significantly. Municipal sludge has a high water content and is difficult to deal with, which has become a serious problem for urban development. On the one hand, sludge drying can stabilize and reduce the volume of sludge, and on the other hand, it also lays the foundation for the resource utilization of sludge, which is an effective way to solve the sludge problem. At present, the main drying technology is thermal drying. However, due to the high cost of heat source generated by fuel combustion and the large energy consumption required for sludge transportation, its energy utilization rate and drying efficien...

AI Technical Summary

Problems solved by technology

In the patent CN101240976A and the patent CN103145311A, the solar heat collector is used to assist the heat pump to provide the heat source, the sludge enters the drying room through the conveyor belt and is in contact with the hot air for drying, and the dried air is recycled to the heat pump system for waste heat circulation, but the system does not carry out solar energy. Efficient frequency division utilization, no graded utilization of waste heat, and no design of air flow channels in the drying room, so that the efficiency needs to be improved

In addition, the method of improving the drying efficiency in the sludge drying process needs to be further improved

Images