Rotocel extractor

Tipping pan and horizontal filters are also used for leaching the modus operand of the Rotocel extractor resembles that of a tipping pan filter, although the details of its design differ slightly. 

The endless-belt percolator (Wakeman, loc. cit.) is similar in principle, but the successive feed, solvent spray, drainage, and dumping stations are hnearly rather than circulany disposed. Examples are the de Smet belt extractor (uncompartmented) and the Lurgi frame belt (compartmented), the latter being a kind of linear equivalent of the Rotocel. Horizontal-belt vacuum filters, which resemble endless-belt extractors, are sometimes used for leaching. 

FIG. 18-77 Rotocel extractor. [Rickies, Chem. Eng. 72(6) 164 (1.965), Used with permission of McGraw-Hill, Inc.]... 

Figure 3. Rotocel extractor. Courtesy of Kvearner Davy.

The latest extractor to be developed for mainstream oleaginous material extraction applications is a rotary-type extractor with fixed slotted floor and bevel gear drive trademarked as the Reflex Extractor. This extractor was developed by Kemper et al. (15) of the French Oil Mill Machinery Company in 1995 and patented in 1997. The Reflex Extractor is an improvement on the Rotocel Extractor. One of these units installed at the Louis Dreyfus solvent extraction plant in Argentina has processed in excess of 9000 metric tons of soybeans per day, making it the world s highest capacity extractor. 

FIGURE 10.3-4 Rotocel crossflow extractor. (Reproduced by paimission, Chemical Engineering Progress, Amarican Institute of Che mica] Engineering.)... 

Fig. 4. Phantom view of "Rotocel" extractor. Courtesy of Dravo Engineers and Constructors, Solvent Extraction and Biochemicals.

Fig. 8.7. Cutaway drawing of Rotocell Solvent Extractor. A carousel with deep-bed baskets rotates by a series of collet/flake loading, solvent extraction, drainage, and unloading stations. (By permission of Davy-Dravo, Inc., Pittsburgh, PA.)...

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