Equipment Introduction

Wet materials are continuously fed from the feeder onto the first drying plate at the upper part of the dryer. Rake arms fitted with rake blades rotate to turn over the materials continuously. Materials flow along an exponential spiral path across the surface of drying plates. On the small drying plates, materials are conveyed to the outer edge and fall onto the outer edge of the large drying plate below. On large drying plates, materials move inward and drop through the central discharge opening onto the next small drying plate. Large and small drying plates are alternately arranged vertically, allowing materials to flow continuously through the whole dryer. Dried materials fall from the last drying plate to the bottom of the housing and are finally conveyed by the rake blades to the discharge outlet. Moisture escapes from the materials and is exhausted via the moisture vent on the top cover. For the vacuum-type disc dryer, moist gas is discharged through the vacuum pump port on the top cover. The dry materials discharged from the bottom can be packed directly.Auxiliary equipment such as finned heaters, solvent recovery condensers, baghouse dust collectors, dry material return mixing mechanisms and induced draft fans can be equipped to boost drying capacity. The system can process paste-like and heat-sensitive materials, recover solvents conveniently, and support pyrolysis and reaction operations. Heating medium is passed inside the hollow drying plates; available heating media include saturated steam, hot water, thermal oil and high-temperature molten salt. The heating medium enters from one end of the drying plate and exits from the other end.

Features and Economic Benefits

- Low power consumption and low noise.

- Continuous operation with high thermal efficiency.

- Uniform heating of materials and short drying time.

- Low material loss and good environmental performance.

- Large drying capacity.

- Closed and continuous operation, reducing labor intensity for workers.

Operating Procedure

Process of Continuous Disc Dryer with Basic Configuration

Wet materials are evenly fed to the top of the continuous disc dryer via a quantitative feeder. The drying process is completed while materials flow through the dryer, and dry materials are discharged from the bottom.

Process of Continuous Disc Dryer with Radiator

It is suitable for drying processes with relatively high evaporation intensity. Based on the basic configuration, a finned radiator is added. A small flow of hot air is introduced into the dryer to absorb the water vapor escaping from materials during drying, preventing condensation of moist gas at the top of the dryer and in the exhaust stack.

Process of Continuous Disc Dryer with Hot Air System

It is suitable for drying processes with high evaporation intensity. On the basis of the basic configuration, a finned heater and tail gas induced draft fan are equipped. The introduced hot air quickly carries away the moisture released during drying, further enhancing heat transfer and drying efficiency, and preventing condensation of moist gas in the exhaust pipeline at the top of the dryer.

Process of Continuous Disc Dryer with Dust Removal Device

It is suitable for drying hazardous, polluting and easily fugitive materials, such as pesticides, dyes and their intermediates. On the basis of the basic configuration, a baghouse dust collector, finned heater and induced draft fan are installed to capture trace ultra-fine and light materials entrained in the tail gas, so as to protect the environment and reduce product loss.