For the selection of dryers, it is generally necessary to consider various factors, such as the state and properties of wet materials, the requirements of dry products (the final moisture content, crystal shape and gloss, etc.), the size of the products and the heat source used. In combination with the classification of the dryer, determine the type of dryer that is suitable. However, there are several types of dryers that can be applied to a certain drying task, for example, for burning coal for coking, low-temperature carbonization, coal gasification, and special purposes, in order to improve the performance (improving heat generation, improvement) Grinding performance), need to be dried. In the selection, according to the material is a block, but also a large number of continuous production, air flow drying, rotary cylinder dryer, single-chamber continuous fluidized bed dryer, vertical dryer and so on. For example, the polyester chip can be used according to the state of the material and the treatment method, such as a gas flow dryer, a rotary cylinder dryer, a multi-layer continuous fluidized bed dryer, a horizontal multi-chamber fluidized bed dryer, and the like. As for the type of dryer to be used, it is possible to learn from the equipment currently used for production. On the other hand, the latest developments in drying equipment can be used to select new equipment suitable for this task. If there is no data in these two aspects, it should be concluded after the technical and economic accounting on the basis of the experiment, in order to ensure that the selected dryer is technically feasible, economical and reasonable, and the product quality is excellent.
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