Centrifuge
Clarifying decanters for bioethanol
Bioethanol, which depends on the fermentation of plant-based sugars and starches, is a gasoline substitute. The most commonly used feedstocks are corn and sugar cane.
Ethanol production from starch-based feedstocks like corn and wheat, creates tons of stillage which can be used in animal feed, preferably as dried distiller’s grain with solubles (DDGS). Decanter centrifuges separate the stillage into a centrate called "thin stillage" which contains proteins and microfibers, and a solids phase called wet cake that contains the coarse constituents of the grain's fiber.
The centrate (thin stillage) with proteins, yeast and microfibers, is evaporated to produce a syrup, also known as "thick stillage". If corn is used as feedstock the thick stillage also contains corn oil that can be obtained with centrifugal separators to get the most out of your raw material and process. After deoiling the thick stillage is mixed with the wet cake from the decanter and dried to form DDGS.
In ethanol production from sugar-based feedstocks like sugar cane or molasses vinasse is produced in the distillation stage. After further concentration by evaporation the vinasse concentrate is treated by decanters. The finally obtained vinasse products are used as additives in animal feed and as fertilizer.
Features & Benefits
- Highest separation efficiency and drier cake due to deep pond design with high g-volume, automatic differential speed adjustment and always full torque
- Energy efficient design: small solids discharge diameter and energy jets for less energy demand
- Robust and reliable operation: external gears for less exposure to high temperatures, oil + air lubrication for all main bearings
- Advanced wear protection: Tiles and tungsten carbide protection for longer uptime
- VFD drive for high flexibility because of bowl speed changing during production
- Compact Design: small footprint, easy access to all service relevant parts
The smaller the diameter of the discharged solids or liquids in a decanter centrifuge, the less the energy consumption. GEA decanters for bioethanol are in deep-pond design. Deep-pond designs come with smaller solids and liquid discharge diameters (DS2 and DL2) than shallow-pond designs (DS1 and DL1) which makes them very energy efficient. The difference in energy consumption can be up to 30 percent.
The discharge diameter is one feature to reduce energy consumption, energy jets is another. GEA Energy Jets deflect the discharged liquid in such a way that it supports the bowl's rotation (right). This results in energy savings of up to 10 percent, compared with a decanter bowl without energy jets (left).
GEA 洞察
通过可持续制冷保证面向未来的冷链
优质冷链管理的重要性不可低估。确保易腐食品在食用时安全且高质量是冷链设施运营商的巨大责任。GEA 处于为冷库和配送中心提供安全、可持续制冷技术的前沿，帮助客户减少其设施的能源消耗和碳排放。
批量挤奶如何支持现代奶牛养殖业
自动挤奶的最新发展引入了批量挤奶 – 一种在固定挤奶时间将奶牛分组挤奶的奶牛养殖实践，通常每天两次到三次。自动化技术正在帮助奶农克服近期的挑战，平衡奶牛场的奶牛福利、灵活性和可持续性，同时不断优化其成本结构并实现越来越高效的优势。
从稀薄的空气中
在许多国家/地区，获得安全用水和卫生设施体系仍然是一个挑战。由于饮用水不干净以及每天长途跋涉取水而生病，意味着许多儿童无法上学。GEA 通过与汉堡非营利组织 Viva con Agua 合作，使用一些非常神奇的技术帮助为坦桑尼亚的几所学校提供干净的水。
