Modularized sludge drying system based on solar heat utilization

Abstract

The invention discloses a modularized sludge drying system based on solar heat utilization. The modularized sludge drying system comprises a high-water-content sludge treatment module, a low-water-content sludge treatment module and a heat collection module which are sequentially arranged; the high-water-content sludge treatment module comprises a drying chamber, at least three sludge conveying belts are sequentially arranged in the drying chamber from top to bottom, an overturning unit used for overturning sludge is arranged between every two adjacent conveying belts, the low-water-content sludge treatment module comprises a shell, a stirring dryer and a fluidized bed which communicate with each other are fixedly arranged in the shell, and the stirring dryer communicates with the drying chamber, and an interlayer is arranged on the side wall of the shell in the circumferential direction; and the heat collection module comprises a solar heat collector and an oil tank which communicate through an oil conveying pipe, and the solar heat collector and the oil tank communicate with the upper end and the lower end of the interlayer through oil conveying pipes correspondingly. Solar energy can be utilized to generate heat to dry sludge for multiple times, waste gas generated by the system can be utilized for multiple times, the structure is simple, and energy consumption is reduced.

Description

Technical field [0001] The present invention relates to the field of novel sludge drying devices, particularly to modular sludge drying systems based on solar thermal utilization. Background technique [0002] Sludge refers to a mixture or colloidal body that is produced in the production and life and the mixture or colloidal substances deposited in the drain pipe. In recent years, with the improvement of the living standards of our people and the development of industrial, the total amount of sludge is increasing. At present, the main drying technology is hot dry, but the fuel combustion is high, the backward drying mode and the energy consumption of the continuous transport sludge are large, resulting in both its energy utilization and drying efficiency. Lower, although the prior art can be dried using solar thermal heat, the energy utilization is not high, and the exhaust gas is directly discharged, and only the sludge is dry, the drying is not high, output Sludge still has a ...

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Problems solved by technology

[0002] Sludge refers to the mixture or colloid of solid and water produced in production and life and deposited in drainage pipes and channels. In recent years, with the improvement of people's living standards and the development of industry in our country, the total amount of sludge discharge is increasing At present, the main drying technology is thermal drying. However, the cost of using fuel combustion as a heat source is high, the backward drying mode and the energy consumption of transporting sludge over a long distance lead to poor energy utilization and drying efficiency. Although the existing technology can use solar heat to dry sludge, the energy utilization rate is not high, and the waste gas is directly discharged to waste energy. At the same time, the sludge is only dried once, the degree of drying is not high, and the output Sludge still has a lot of water

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