A distiller's grains dryer is a specialized dehydration and drying device designed for the high moisture (65%-85%), high fiber, and easy rancidity characteristics of distiller's grains (including baijiu, beer, and huangjiu byproducts), a byproduct of the brewing industry. Its core function is to rapidly remove moisture from the distiller's grains using heat exchange technology, reducing its moisture content from an initial high humidity state to a safe storage standard of 10%-15%. Simultaneously, it maximizes the retention of nutrients such as protein and amino acids in the distiller's grains, providing a foundation for subsequent resource utilization. It is a key piece of equipment connecting alcoholic beverage processing and solid waste treatment.

The core adaptability of a distiller's grains dryer lies in its compatibility with different distiller's grain characteristics: For baijiu distiller's grains, which are characterized by "high crude fiber content and strong agglomeration," the equipment is often equipped with anti-sticking plates and dispersing devices to prevent material agglomeration and blockage; for beer distiller's grains, which have "uniform moisture distribution and many heat-sensitive components," medium-low temperature hot air (80-120℃) drying is used to prevent nutrient loss. Its processing capacity can be flexibly customized, adapting to everything from 1-5T/h for small wineries to 10-30T/h for large brewing bases, meeting diverse production capacity needs.

The lees dryer primarily uses a drum-type structure, with a core process consisting of three steps: First, the wet lees, pre-treated by pressing (configured on some production lines), are evenly fed into the inclined drum by a feeding device. Then, hot air generated by heat sources such as natural gas or biomass pellets comes into counter-current or co-current contact with the lees. During the drum's rotation, internal lifting plates continuously agitate the material, expanding the heat exchange area and promoting rapid evaporation of moisture into steam. Finally, the steam is treated with the exhaust gas in a dust removal and deodorization system, and the dried lees are discharged from the drum's outlet. After cooling, they are ready for subsequent processing stages. Some high-end equipment is also equipped with intelligent temperature control and online moisture monitoring systems to adjust drying parameters in real time, ensuring uniform and stable moisture content in the finished product.

As a core piece of equipment for achieving "reduction and resource utilization" of distiller's grains, the distiller's grains dryer has significant application value: The dried distiller's grains, retaining rich nutrients, can be directly processed into livestock feed (such as beef cattle and pig feed), reducing breeding costs; they can also be mixed with straw and manure for fermentation to produce organic fertilizer for agricultural use; for high-starch distiller's grains, ethanol can be further extracted or they can be used as biomass fuel, achieving energy recovery. It not only solves the environmental pollution problem caused by the indiscriminate dumping of distiller's grains, but also constructs a circular economy chain of "brewing - solid waste treatment - livestock/planting," combining environmental and economic benefits. For more information, please contact us!