The vibration multi-layer fluidized dryer, developed by Northeastern University, is a high-efficiency and energy-saving drying system that has earned the gold medal at the Eureka World Invention Fair. This equipment consists of an inner and outer cylinder, a ring orifice plate, and a vibration motor. The two motors are arranged crosswise to generate vertical excitation force and torque around the vertical axis, causing the dryer body to vibrate vertically and torsionally. This dual motion allows the material to move continuously in a jumping motion from top to bottom across the horizontal ring plate. The drying medium, blown into the cylinder via a blower, passes through the orifice plates from bottom to top, enhancing heat and mass transfer as the material is constantly thrown and turned. This design increases the contact area between the material and the drying medium, improving efficiency. This dryer is ideal for small-scale operations (up to 1 ton/hour) and can handle various granular, powdered, blocky, and sheet-like materials. It is widely used in the feed industry for drying fish and shrimp meal, distiller’s grains, starch slag, and vegetable protein, among others. Its advantages include energy savings, high production efficiency, and excellent product quality. The rotary flash dryer is another innovative drying technology designed for solid-fluidized drying. It features mechanical dispersion and particle size adjustment. The system includes a feeder, drying chamber, cyclone separator, and bag collector. High-moisture paste-like or filter cake-like materials are mixed with hot air entering tangentially. Under the influence of a stirrer and high-speed airflow, the material breaks apart into fine particles, achieving rapid heat and mass transfer. A particle sizer at the top ensures uniform particle size, while larger undried particles fall back for further processing. This results in uniformly dried products. It is suitable for sticky, pasty, or cake-like materials, such as blood meal, meat and bone meal, and fish meal. The rotary flash dryer offers high drying efficiency, low energy consumption, and compact design, making it a popular choice in the feed and chemical industries. The breaking rotary dryer is a forward-flow dryer where material is fed into the drum and lifted by copy boards before being dropped. A built-in crushing device breaks large particles into smaller ones, increasing surface area and promoting faster drying. Hot air enters the cylinder, facilitating heat and mass transfer. The fine powder is collected by a dust collector, while the remaining material continues the process until it reaches the desired moisture level. This dryer is ideal for high-humidity granular, flake-like, or blocky materials, such as manure, distiller’s grains, and protein residues. With a high heat transfer coefficient and thermal efficiency, this dryer can operate at high temperatures, making it suitable for viscous or sticky materials. It is widely used in agriculture, food processing, and waste management. The tube dryer operates on the principles of conduction and radiation. Steam flows through tubes in counter-current or co-current mode, while the material is stirred and pushed by shovel plates inside the closed chamber. Part of the dried material is discharged directly, while the rest is returned for further mixing and drying. This system allows for both continuous and intermittent operation, offering flexibility in different processes. It is known for its low heat consumption, high efficiency, and ability to handle large volumes of wet materials. The compact design reduces civil engineering costs, and minimal wear parts ensure easy maintenance. It is commonly used in industries such as food, chemicals, and agriculture for drying materials like distiller’s grains, sludge, and sawdust. Pulse tubes and advanced thermal technologies have recently been integrated into some tube dryers, boosting drying strength by up to 30%, according to recent data. The hot air rotary sheet dryer, developed by Shenyang Yitong Venture Company, is designed for high-viscosity and high-moisture materials. It combines the benefits of hot-air grooved rotary vane dryers and air dryers, enabling efficient two-stage drying. First, the material is thrown and crushed by high-speed blades, allowing full contact with hot air. Then, it moves to the air dryer for a slower drying stage, reducing moisture content from 80% to 10%. This method ensures high thermal efficiency and superior product quality, with capacities reaching up to 500 tons per day for various materials. It is widely used in the pharmaceutical, food, and chemical industries for drying materials such as penicillin mycelia, antibiotic residues, and sludge. The multi-layer rotary dryer, based on foreign advanced technology, features a three-layer drum with special copy boards. The material and hot air are fully mixed during movement, resulting in high heat transfer efficiency. With a maximum output of 5 tons per hour, it is ideal for drying materials like cassava residue, distiller’s grains, and herbal medicines. The system includes a deblocking device, screw conveyor, and cooling system, ensuring consistent quality and high automation levels. This dryer achieves thermal efficiency up to 80%, surpassing similar domestic equipment. Its high efficiency and continuous operation make it a preferred choice in agricultural and industrial applications.

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