Recently, a food company in Dongguan, Guangdong Province, successfully put into operation a combined drying production line for soy sauce residue and brewer's grains, marking a new stage in the resource utilization of brewing by-products in the region. The production line, custom-designed by Zhengzhou Dingli, includes a dispersing feeder, a variable frequency conveyor belt, a waste heat recovery drying unit, and an intelligent packaging system, achieving automated continuous operation.
The core equipment utilizes waste heat drying technology, employing heat pump heating and scraper stirring to ensure uniform heating of high-humidity materials. Its energy-saving advantages are significant, reducing energy consumption by 30% compared to traditional drying methods. It is also equipped with an intelligent temperature control system, precisely controlling the finished product's moisture content to below 12%, preventing nutrient loss due to over-drying.
The dried soy sauce residue has a protein content of up to 28%, making it a high-quality feed ingredient with a market price three times higher than that of wet residue. Through resource-based processing, the company can process over 10,000 tons annually, not only alleviating environmental emission pressures but also opening up a circular economy sector with annual revenue exceeding 5 million yuan. This model provides a replicable solution for the treatment of by-products in the brewing industry, promoting the industry's transformation towards green and low-carbon practices.
