Introduction of the popular types of sludge dryer in the market

There are many kinds of sludge dryers. At present, there are several popular equipment in the market, such as rotary rake flying three-stage multi-circuit dryer, fluidized bed dryer, belt dryer, paddle dryer, disc dryer, etc. users should choose according to their own production needs when purchasing.

Rotary harrow three cylinders multiple-loop dryer

The characteristics of this dryer are suitable for sludge with high humidity, high viscosity and high viscosity. Of course, ordinary sludge can also be dried.

Working principle: the drying process of the equipment can be divided into three drying processes: one, two and three. Each drying process has different design process, which can make the material adapt to the fluctuation of moisture content in each drying stage. The whole process adopts integrated linkage control, advanced and mature equipment technology, stable and reliable operation, high efficiency and easy operation.

Features: the equipment adopts automatic control mode, with high intelligence, simple and convenient operation, and stable continuous operation; it has large processing capacity, wide application materials, low drying cost, adjustable and controllable drying quality; it has convenient installation, small floor area, and can be installed indoors and outdoors; it has a variety of heat sources, including natural gas, liquefied gas, coal, and enterprise waste heat Etc;

Fluidized bed dryer

Fluidized bed dryer is suitable for drying or cooling granular and flaky materials. The sludge can be dried completely or semi dried out.

Working principle: hot air and wet sludge enter into the fluidized bed room (with raking device), and sludge fully contacts with hot air. After the indoor semi dry products are basically loose, the flow quality of the whole drying process is guaranteed, so as to meet the drying requirements.

Features: the residence time of materials in the fluidized bed can be adjusted at will to produce products with low moisture content; the heat transfer intensity is large, the thermal efficiency is high, and the raking device can break up the materials that are easy to agglomerate; the feeding amount can be adjusted according to the temperature change in the fluidized bed to carry out continuous or batch production; the materials in the fluidized bed are dried evenly to avoid overheating of local materials; special air flow is adopted The distribution board not only pushes the material forward, but also does not leak the material; the system adopts multi-stage dedusting, which improves the product availability and reduces the material loss; the system adopts the fully closed structure, and the drying and cooling processes can be completed in one equipment at the same time; the continuous operation, with large processing capacity, is suitable for mass production.

Belt dryer

The belt dryer is particularly suitable for dehydrated vegetables, Chinese herbal pieces and other materials with high moisture content and heat sensitivity.

Working principle: wet sludge is applied to perforated belt continuously and evenly. The belt is mainly in horizontal position. The product is transported through drying area, which is divided into several parts. In these areas, dry gas flows through the wet sludge for drying.

Features: not only for drying of materials, but also for baking, burning or maturing of materials; the belt dryer is not complex in structure, easy to install, and can operate for a long time. In case of failure, it can enter the box for maintenance and repair; the equipment is flexible in configuration, and can use the mesh belt washing system and material cooling system; the moisture content of sludge can be set freely and used flexibly.

Paddle dryer

Working principle: make the sludge enter into the dryer, under the action of internal stirring slurry, make the sludge fully contact with the heat carrier and the heat surface, so as to achieve the drying purpose.

Features: compact structure, small floor area, high heat utilization rate, self-cleaning capacity of wedge-shaped blade, which can improve heat transfer of blade

Disc dryer

Disc drying equipment is suitable for drying organic chemical products, inorganic chemical products, medicine, food, feed fertilizer and other materials

Working principle: the sludge is added to the first plate on the upper part of the dryer through the feeder. The rake arm with the rake leaves continuously rotates to make the rake leaves continuously turn the sludge. The sludge flows through the surface of the drying plate along the exponential helix. The sludge on the small drying plate is transferred to the outer edge, and then falls on the outer edge of the large drying plate below. Then the sludge on the large drying plate moves inward and falls from the middle as follows Next layer of small dry plate. The large and small drying plates are arranged alternately, and the materials can continuously flow through the whole dryer. The hot medium enters the drying disk through the hollow. The sludge meeting the drying requirements falls into the bottom layer of the shell from the last drying plate, and is transferred to the discharge outlet by the rake leaves.