With the acceleration of urbanization, the output of municipal sludge is also increasing. In the face of such a huge sludge production, the traditional sludge treatment methods can not meet the requirements, so the municipal sludge drying equipment came into being. The municipal sludge drying equipment can quickly dry the wet sludge with moisture content of about 80% to about 10% of the dry sludge, greatly reducing the sludge volume, and the subsequent transportation and recycling of sludge.
Because the municipal sludge drying equipment can not only dry municipal sludge and domestic sludge, but also can dry industrial sludge such as chemical sludge, oil sludge, papermaking sludge, tannery sludge, pharmaceutical sludge, metal sludge, coal sludge, printing and dyeing sludge. More and more enterprises begin to use urban sludge drying equipment, so users need to pay attention to what problems in the purchase of urban sludge drying equipment.
First of all, before selecting the equipment, it is necessary to understand the characteristics of drying materials, such as moisture content, viscosity, particle size.
Secondly, the selection of sludge drying equipment manufacturers. Nowadays, there are many manufacturers in the market. Users should choose the regular manufacturers with successful cases and strong strength, and also have corresponding qualification certificates, so that the manufacturers can give correct guidance and produce good quality equipment.
Third, we need to select the appropriate equipment model and specification according to the actual production. The output of different models and specifications of equipment is also very different. If the selected equipment model is too small, it can not meet the production demand, and if the selected equipment model is too large, it will cause waste of thermal energy resources.
Fourth, in the purchase of drying equipment, we should pay attention to the equipment material. Because in the process of sludge dehydration and drying, the gas generated in the heat exchange process inevitably contains corrosivity, which will cause certain corrosivity to the cylinder, so the cylinder material should have strong corrosion resistance. At the same time, when the sludge is dried, because the cylinder is in high temperature for a long time, it is also necessary to ensure the strong high temperature resistance of the cylinder.
Fifthly, when selecting drying equipment, it should choose high degree of automation, convenient operation and control, which can reduce the number of operators and labor cost investment.
Sixthly, dust removal equipment is one of the key auxiliary equipment of municipal sludge drying equipment. When purchasing equipment, users should choose the machine with better dust removal equipment and durability.
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