What are the causes of cylinder corrosion of solid and hazardous sludge drying equipment

Industry is the pillar industry of China's economic development, and in the process of industrial production, a large number of solid waste sludge can not be avoided. With the economic development getting better and better, the annual sludge discharge is also increasing. These solid hazardous waste sludge not only has high water content, but also contains a variety of organic poisons, heavy metals and other elements. It is easy to rot and emit odor, causing serious harm to the environment and restricting the economic development of industrial enterprises. The emergence of solid and hazardous sludge drying equipment effectively solves this problem. As an important device for sludge dewatering and drying treatment, its working efficiency is beyond doubt. However, after a long time of operation, sometimes the cylinder will rust, which greatly reduces the durability of solid waste sludge drying equipment. So what are the causes of cylinder corrosion of solid waste sludge drying equipment?

Firstly, the component content of drying materials is one of the reasons for corrosion of solid waste sludge drying equipment. This is due to the characteristics of high moisture, high viscosity and complex composition, especially for the sludge with high water content. In the process of dehydration and drying, the solid and hazardous sludge with high humidity and high viscosity contacts with high temperature hot gas flow, and the sludge is heated to evaporate a large amount of water vapor, which inevitably contains certain corrosive components, which is easy to cause solid and hazardous waste sludge The dry high standby cylinder is corroded.

Secondly, when the solid and hazardous waste sludge drying equipment is used to dry the sludge, the temperature and humidity range in the cylinder fluctuate greatly, and sometimes the equipment will work below the dew point, so that the water vapor is easy to condense and condense on some metal components of the cylinder. In addition, the hot flue gas and water droplets contain corrosive substances, which will cause corrosion to the cylinder of the solid and hazardous waste sludge drying equipment 。

Thirdly, some solid waste sludge drying equipment is installed outside the smothering without a ceiling. After a long time of wind, sun and rain, the paint layer on the surface of the equipment is easy to fall off. At this time, if the paint is not timely repaired, it will cause the solid waste sludge drying equipment to rust.

The above are some reasons for the corrosion of the solid waste sludge drying equipment cylinder. In addition, the maintenance is not in place, and the equipment material has poor corrosion resistance. Therefore, users are required to choose wear-resistant and high-temperature resistant stainless steel materials when purchasing the equipment, and do a good job in the maintenance of the equipment barrel in the daily use process, so as to ensure the durability of the equipment.