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).
Downloads
GEAインサイト
オーダーメイドの搾乳装置は、乳牛と酪農家の幸福をサポートします
健康で幸せな乳牛は、持続可能な生乳生産を成功させる鍵です。したがって、乳牛を健康に保つことは、すべての酪農家の取り組みの中心にあります。個々の乳牛のニーズに合わせた適切な給餌、良好な飼育環境、新鮮な空気、水、光など、多くの要因が乳牛の健康に影響を与えます。しかし同時に、搾乳方法は乳牛の健康状態に大きな影響を与えます。GEAは「Good Cow Milking」の理念でよく知られており、家畜の健康と乳質においてより良い結果を出すために、常にさら...
GEAの包括的なエンジニアリング・ソリューションによるネットゼロの達成
どの業界も、厳しい脱炭素規制や法規制を乗り越えながら、ネットゼロの目標達成に向けて懸命に取り組んでいます。同時に、企業は、品質、製品開発、プロセスの最適化に対する高まる要求のバランスを取りながら、収益性の向上に努めなければなりません。この課題には、GEAが提供するような協調的かつ包括的なアプローチが必要です。
食卓に登場するニューフードが食の未来を創造
コーヒー、カカオ、牛乳、肉、魚、卵。こういった毎日の定番ともいえる食材は、集約農業に大きく依存しています。ニューフード技術の台頭に伴い、これまで以上に持続可能な代替食品を使用できるようになりました。そこで今回は、GEA で液体・発酵・充填担当上級副社長を務めるライマー・グッテ博士と対談し、その可能性と政策について探ってみました。
