There are significant differences between three-cylinder dryers and single-cylinder dryers in many aspects. The following is a detailed explanation of these differences:
1. Structural differences:
• Single drum dryer: Consists of a long drum, which is essentially a rotating drum with a heater. Material enters from one port and is discharged from the other port.
• Three-cylinder dryer: consists of three independent hot air cylinders, each cylinder has its own heating system and control system. The material travels between the three cylinders, and the cylinder length is designed to be short, which can avoid excessive wear of the material in most cases.
2. Drying efficiency:
• Three-cylinder dryer: The drying efficiency is high, mainly because its structural design can greatly reduce the residence time of materials inside, avoid over-drying, and save energy.
• Single-cylinder dryer: The drying efficiency is weaker than that of the three-cylinder dryer. Because the material stays in the movable cylinder for a long time, it is easy to form scale and excessive collision between particles, which has a certain impact on the drying efficiency.
3. Application scenarios:
• Single cylinder dryer: suitable for drying specific materials, such as wood chips, grains, alcohol, etc. Although its drying efficiency is relatively low, it has a simple structure and is convenient to use, so it still has a certain market demand.
• Three-cylinder dryer: suitable for drying various materials. It can dry materials with different viscosities and moisture contents, and the materials have high internal drying uniformity. In addition, the three-cylinder dryer can perform multi-stage drying and cycle aging according to different process requirements.
4. Energy consumption and output:
• Three-cylinder dryer: Compared with a single-cylinder dryer, power consumption can be reduced by 60% and the floor space can be reduced by about 50%.
• Single-cylinder dryer: Although its coal consumption and electricity consumption are more than 30-70% lower than that of ordinary dryers, its energy consumption and floor space are still larger than those of three-cylinder dryers.
