Paper making Sludge Paddle Dryer

Paper making sludge paddle dryer

FEATURES

1. Because the heat required by the drying equipment is indirectly heated by heat conduction, a small amount of gas is not needed or needed to take away the moisture in the drying process. It greatly reduces the heat loss taken away by the air flow and improves the heat utilization rate. It is an energy-saving drying equipment.

2. Stirring and mixing make the materials turn violently, so as to obtain high heat transfer coefficient. Therefore, the floor area and space are very small, and the capital construction cost of the plant is saved. In the drying process, the gas consumption is small, the flow rate is low, and the amount of dust carried away by the gas is small, so it is convenient to recover the gas dust after drying, and the volume of the recovery equipment is small, which can save the equipment investment. For the drying process which needs to recover the solvent, the solvent concentration can be greatly increased. Due to the special structure of the blade, the material is squeezed and relaxed alternately during the drying process, which strengthens the drying. The filling rate of materials in the drying chamber is very high, which can reach 80% - 90%. The residence time of materials can be adjusted from minutes to hours by adjusting the feeding speed, stirring shaft speed, material filling degree and other parameters.

3. The Paper making Sludge Paddle Dryer can be used for municipal sludge, printing and dyeing sludge, papermaking sludge, electroplating sludge and other fields of sludge drying, with high thermal efficiency, wide application range, low operation cost, and continuous production.

Different equipment schemes can be designed according to process requirements and material characteristics

WORKING PRINCIPLE

The equipment adopts conduction heating mode, which is composed of two meshing blade shafts, W-shaped shell frame with interlayer and transmission part. The whole drying process of sludge is carried out in a closed state, and the organic volatile odor gas and its water are sent to the tail gas treatment device through the induced draft device in a closed atmosphere, so as to avoid environmental pollution. The heating medium is steam and heat transfer oil. The heating medium is divided into two paths, which respectively enter into the interlayer of the drying shell and the inner cavity of the blade. The machine cavity and the blade shaft are heated at the same time, and the sludge is dried by conduction heating. After the sludge enters the chamber, it is turned over and stirred by the rotation of the paddle, and the heating interface is constantly updated to fully contact with the heated body and paddle, so that a large amount of water in the sludge is evaporated. At the same time, the sludge is transported to the discharger with the rotation of the paddle shaft, and the uniformly dried sludge is discharged from the outlet.

Equipment diagram

APPLICATION

It has been successfully used in food, chemical, petrochemical, dyestuff, industrial sludge and other fields. The characteristics of heat transfer, cooling and stirring make it possible to complete the following unit operations: combustion (low temperature), cooling, drying (solvent recovery), heating (melting), reaction and sterilization.

Equipment accessories

TECHNICAL PARAMETERS