Steam-type sludge drying machine

Abstract

The invention discloses a steam-type sludge drying machine, and belongs to the technical field of the sludge drying. The steam-type sludge drying machine comprises a machine frame, a driving device, a fixing cylinder and a heating component. The fixing cylinder is provided with a feeding port and a discharging port. The feeding port and the discharging port are provided with a feeding device and a discharging device. The heating component comprises a hollow shaft, a heat exchange pipe and a linkage component. Steam of which the temperature is 100 DEG C at least is conveyed in the hollow shaft. The driving device comprises a main motor, a reducer and a chain wheel mechanism. The feeding device comprises a first spiral conveying mechanism and a second spiral conveying mechanism. The discharging device comprises a discharging frame, a sealing door, a baffle and a driving mechanism. A plurality of lifting plates for lifting sludge is detachably fixed around the heating component. The steam-type sludge drying machine has the characteristics of high automation degree, energy conservation and emission reduction, good sludge drying effect and high sludge drying efficiency.

Description

technical field [0001] The invention relates to a sludge dryer, in particular to a steam sludge dryer. Background technique [0002] With the development of my country's social economy and cities, the amount of urban sewage is increasing. In recent years, the state has provided strong support from policy and financial resources, and built a large number of urban sewage treatment plants to maintain the water environment, prevent and control water pollution, and promote the sustainable development of the national economy and ecological environment. The urban sewage problem has gradually get relief. However, the treatment and disposal of urban sewage sludge is still a worldwide technical problem. Improper disposal will cause serious secondary pollution, and the problem of harmless treatment of sludge is becoming increasingly serious. In order to deal with this problem, in recent years, various sludge treatment equipments have been emerging, hot air sludge dryer is one of the ...

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Problems solved by technology

[0005] However, such hot air dryers inevitably have the problem of high energy consumption. There are two main reasons for this:

[0006] 1. This kind of hot air dryer needs to continuously feed a large amount of hot air, and the exhaust gas discharge is very large; in order to meet the industrial gas emission standards, enterprises must carry out exhaust gas treatment before discharge, and excessive exhaust gas discharge will directly lead to exhaust gas treatment. increased energy consumption;

[0007] 2. Hot air dryers usually use fuel oil or natural gas to obtain high temperature, and the combustion temperature is usually maintained at 700-800°C. However, the water in the sludge can be fully evaporated at 100°C; In fact, the high temperature has not been fully utilized. From the perspective of energy conservation, this is obviously a waste of energy, which means that the energy consumption is too large

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