method and device for the production of bone gelatin production

摘要

PICT:0965460/C4-C5/1 Crushed bones are continuously degreased in a number of stages in series by crushing and breaking the bones in each stage before passing the bones in each stage through a heat-exchanger in counterflow to water at an elevated temperature below that at which collagen in the bones would be decomposed, removing the bones from the heat-exchanger, and recirculating the water after separating the fat. As shown, bones from crusher 10 pass to bin 11 and thence to heat-exchanger 12 in counterflow to water passing through the system; the bones pass to conveyer 14 while the liquid mixture o fat and water pass to separator 21. The bones are conveyed through two similar further crushing (15 and 18) and extraction (16 and 19) stages, the fat from separators 21-23 being combined in tank 27. Fresh water, preferably at about 160 DEG F., enters at 37, and water from separators 22 and 23 is in each case recycled by lines 33 and 36 to the previous extraction stage, water from separator 21 passing from the system.