DE166778C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

Those in the Zeitschrift für Spiritus-Industrie, N.F. 190I ₁ p. 534, and in the yearbook

. 'of the Association of Alcohol Manufacturers in Germany, 2nd Vol. 1903, p. 207, discuss the K önigsdorfe process, which aims at the production of fodder meal and long-life potatoes, whereby the coarse grated egg is filtered in filter presses in However, up to 29 percent of the dry matter (starch) contained in the potatoes is carried away with the draining fruit water. These reports also point to the attempts to solve the problem of drying the potatoes by centrifuging coarse grated egg through coarse jute fabric, but also starch losses in the outgoing amniotic fluid were unavoidable. The present new method used

to the centrifugal force to get from the finest possible grating in a centrifuge ¹ ; to secrete the starch, the potato peels and fibrous matter, as well as the amniotic fluid in such a way that the specifically heaviest starch from the potato cells opened by rubbing is separated from the specifically lighter potato peels and fibrous matter in such a way that the amniotic fluid without the slightest loss of starch is pressed through the starch and shell layer, as well as through the deposits, and the subsequent extraction of pure starch from the dried material to be centrifuged can easily be achieved by grinding and sifting the latter.

The work. According to the new procedure takes place in the following way: ■■.

The washed potatoes are peeled or unpeeled in the usual way, with or without the addition of water, rubbed as finely as possible; there is no more starch in the outgoing amniotic fluid . ■ ■: '.

The perforated drum is covered with a brass wire mesh. which is a finely perforated copper sieve plate applies, provided. The insert is made of light weight, however appropriately dense filter cloth, which is wrinkle-free on the fcingclochte. Copper sieve is excited. '

Through this process the adhesion of the cell sap, the shell parts and the Starch grains are lifted, all of the starch grains are removed from their cell walls hurled out, and so far .divided from the shells; that from that in the centrifuge remaining centrifugal gul (with ge '. peeled potatoes: essentially from starch ■ and. Consisting of fibrous materials, in the case of unpeeled Potatoes also still containing peel and, if necessary, from the last remaining fruit juice freed by pressing down with water)

Claims (1)

the extraction of pure starch by j further treatment of the centrifuged material (dry j ning, grinding and sifting) is possible in a simple ι way. ■ ·: With this new,. simple process, j which is the direct extraction of starch from the potato grater, so to speak, in a dry way, without repeated washing, Sieving, settling, whisking, without sludge starch processing and without starch loss enabled, the water consumption necessary for this undertaking becomes complete Made dispensable, the starch production freed from the annoying wastewater and thereby allows a simple, safe and cheap way of working with a relatively very high yield of pure starch. The starch-free amniotic fluid is found in the production of alcohol. -As mash water in the Economy as fodder or fertilizer its utilization. The one when peeling the potatoes The peel left behind will become with the pulp residue left over from the sifting process ■ used as feed (dried or undried). The gewQ * uie.ne in the manner indicated Starch can be sold directly as primary and secondary starch, possibly for processing other starch preparations (starch sugar, starch syrup, dextrin, Röstgtimmi etc.) perfectly usable. Ρλ τ κ ν τ - A ν s ρ r uch: Process for removing the amniotic fluid from potato graters for the purpose of starch production., characterized in that the grater is centrifuged in sieve centrifuges will. in r, i:! Hii (.κ 1 in dki * itKiuismn cki ιέι.