When using a distillers’ grains dryer to process various vinasse‑type materials, users may encounter material adhesion or wall‑sticking issues. In severe cases, the equipment can get blocked and fail to operate normally. This article analyzes the root causes of material sticking to the drum wall of distillers’ grains dryers.
Cause 1: High moisture and inherent viscosity of raw materials
If the feed material features high internal moisture and strong viscosity prior to drying, it tends to adhere to the feeding device or inner drum wall during drying. Therefore, the moisture content and viscosity of the material itself constitute one major cause of wall‑sticking.
Operators should strictly control material moisture and viscosity in accordance with manufacturer specifications. Proper control can improve equipment working efficiency and greatly reduce energy consumption.
Cause 2: Insufficient heat inside the drying drum
Distillers’ grains dryers dry materials through heat exchange, so heat is critical for drying efficiency and final drying performance. Insufficient heat inside the drum prevents rapid evaporation of material moisture, extending material residence time inside the cylinder and resulting in inter‑material agglomeration and wall‑sticking. Sufficient heat inside the drum shall be maintained to guarantee effective heat exchange and avoid material adhesion on the drum wall.
Cause 3: Mismatched air volume and wind speed
Coordinated air volume, wind speed and heat contribute to ideal drying performance. Higher air volume and wind speed accelerate heat exchange and mitigate wall‑sticking. Conversely, reduced air volume and wind speed lower internal drum temperature and greatly increase the risk of material sticking to the wall. Air volume and wind speed serve as key media for full contact between heat and materials. After installation and commissioning, operators shall not arbitrarily adjust air volume and wind speed parameters to prevent adverse impacts on production.
Besides the above factors, feeding rate, feeding quantity and internal equipment structure also influence material wall‑sticking.
For further technical consultation on wall‑sticking problems, please contact Jiaozuo Zhenjieneng. Our professional technical team will provide you with detailed solutions.
