Cellulose dryer

Jun 19, 2024

Case introduction: The cellulose dryer is made of hot air tangentially enter the bottom of the dryer, and form a powerful rotating wind field driven by the agitator. Under the strong action of the high-speed rotating stirring paddle, the material is dispersed under the action of impact, friction and shear force, and the massive material is rapidly crushed, fully in contact with the hot air, heated and dried.

Cellulose is a macromolecular polysaccharide composed of glucose. Insoluble in water and common organic solvents. It is the main component of plant cell wall. Cellulose is a kind of polysaccharide widely distributed and abundant in nature, accounting for more than 50% of the carbon content in the plant kingdom. The cellulose content of cotton is close to 100%, and it is a natural source of pure cellulose. In general wood, cellulose accounts for 40 to 50%, and 10 to 30% hemicellulose and 20 to 30% lignin.

Cellulose is an ancient and abundant natural polymer on the earth, which is inexhaustible and a valuable natural renewable resource for human beings. Cellulose chemistry and industry began more than 160 years ago, and is the main research object during the birth and development of polymer chemistry. The research results of cellulose and its derivatives have made significant contributions to the establishment, development and enrichment of polymer physics and chemistry.

Working principle of cellulose dryer:
Flash dryer is by the hot air tangentially into the bottom of the dryer, driven by the stirrer to form a strong rotating wind field. The material enters the dryer by the screw feeder, under the strong action of the high-speed rotating stirring paddle, the material is dispersed by impact, friction and shear force, and the block material is quickly crushed, fully in contact with the hot air, heated and dried. The dried material is carried by air into the dust collection system for collection and treatment, and the tail gas with dust content ≤50mg/m3 is discharged by the induced draft fan to complete the whole drying process.

Cellulose dryer equipment features:
1. High gas velocity in the drying room, short residence time of materials, effectively prevent the material from sticking to the wall and the deterioration of heat-sensitive materials, and can be dried into uniform powder products at one time, eliminating the grinding, screening and other processes.
2. The drying chamber is equipped with grading ring and swirl sheet, and the fineness and final moisture of the material can be adjusted. The special air distribution device reduces the resistance of the equipment and effectively improves the drying uniformity of the material.
3. The bottom of the dryer is equipped with a special cooling device and air pressure seal to avoid deterioration of the material in the bottom high temperature area.
4. It can effectively control the final moisture and fineness, and ensure the moisture content and fineness of the product are uniform through the adjustment of the feeding, hot air temperature and classifier.

Flash dryer is a new type of continuous drying equipment which integrates drying, crushing and screening. It is especially suitable for drying filter cake, paste and mud paste. The drying time of the wet material in the drying tower is only tens of seconds, the water evaporates instantly, and the quality of the dried product has a great relationship with the drying temperature, wind speed, air volume, and the crushing speed.

Longxin has an innovative design scheme to control the size of finished particles and the final water content by adjusting the wind speed, air volume and crushing speed entering the tangent line of flash drying.

Iron glycine fluidized bed dryer

Cellulose dryer

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