What factors affect the efficiency of steam sludge dryer

Steam sludge dryer is a new type of sludge treatment equipment. The equipment adopts indirect drying method to realize evaporation of water inside the sludge, and ensure the sludge is dry and wet even after drying.

First, the moisture content of sludge. If the initial moisture content of sludge is too high before drying, more heat will be needed to achieve the drying purpose when steam sludge drying equipment is used. At the same time, the sludge retention time in the cylinder will be prolonged, and the working efficiency of the equipment will be reduced. In addition, it will affect the quality of the finished products after the sludge is dried. Therefore, the initial moisture content of sludge should be controlled so as to ensure the production efficiency of the equipment.

Secondly, the amount of sludge feed. If the disposable feed is too much, it will lead to the sludge accumulation inside the dryer cylinder, affect the effect of heat and mass transfer between sludge and high temperature air flow, and reduce the production efficiency of the equipment. If the feed is too small, the sludge inside the cylinder is less, the utilization rate of the equipment heat is reduced and the production cost of the equipment is increased. Therefore, only the uniform feed speed can improve the utilization of heat energy and the production efficiency of equipment.

Third, equipment drying process. The advanced technology of steam sludge drying equipment will also affect the efficiency of the equipment and the quality of the finished sludge. The equipment mainly through the double tube stack structure mode and the organic integration of heat exchanger and drying chamber, making sludge in the equipment “take three steps back and two steps” to do reciprocating movement, and at the same time, it is closely in contact with the drying room lifting device, accelerate the heat transfer effect, not only can improve the utilization of heat energy, but also improve the production efficiency of the equipment.

Fourth, drying temperature and air velocity. The temperature and air velocity of steam sludge dryer also affect the production efficiency of the equipment. If the temperature is high and the air volume is large, the heat transfer efficiency is high, the sludge stays in the equipment for a short time, and the production efficiency will be improved naturally. On the contrary, low temperature and small air volume will lead to low heat transfer efficiency, long stay time of sludge in the equipment and decrease of production efficiency.

Fifth, the moisture content of sludge after drying. Under the same initial water content and drying conditions, if the sludge drying requirements are high, the longer the sludge stays in the equipment, the lower the efficiency of sludge will gradually decrease.

In a word, there are many factors affecting the production efficiency of steam sludge dryer. The user needs to strictly follow the operation instructions of the manufacturer, so as to ensure the production efficiency of the equipment, reduce the equipment failure, ensure the quality of the finished products after the equipment is dried, and create more economic benefits for the users.