Centrifuge
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.
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).
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Wpływ globalnego ocieplenia staje się coraz bardziej odczuwalny na całym świecie. W miastach i miasteczkach całego świata mierzymy się z tym samym wyzwaniem: jak zapewniać społecznościom ciepło niezawodne, przystępne cenowo i pozyskiwane w sposób bezpieczny dla środowiska. Osobą, którą jako GEA zaprosiliśmy do rozmowy o metodach szybszego przeciwdziałania globalnemu ociepleniu, jest Kenneth Hoffmann, Kierownik ds. pomp ciepła w GEA Heating & Refrigeration Technologies.
Coś przykuło uwagę farmera Toma. Zamiast organizować kolejną prezentację produktu, GEA pokazała swoje innowacje z wykorzystaniem technologii AR. A to dopiero początek interaktywnego, cyfrowego gospodarstwa GEA.