| 摘要 |
<p>1313679 Fatty acid separation HENKEL & CIE GmbH 16 Dec 1970 [31 Dec 1969 20 June 1970] 59622/70 Heading C2C Fatty acid mixtures containing 0À8 to 15% by weight of organic impurities are separated into components of different melting points by converting to a dispersion of liquid and solid fatty acid particles in aqueous wetting agent solution, separating into a lighter and denser phase being the liquid and solid fatty acid particles respectively, separating the solid fatty acid particles from the aqueous solution, removing a part of the aqueous wetting agent from the circuit and replacing the same by water or by aqueous solutions containing wetting agent and/or electrolyte. The amount of wetting agent solution to be removed is between 10 and 70% by weight of solution depending on the amount of impurity. The process may be used for the separation of distilled tallow fatty acids, cottonseed oil fatty acids, palm kernel fatty acids, fish oil fatty acids, and undistilled fatty acids from the fission of beef tallow. The starting mixtures are cooled from the molten state to the separation temperature, and dispersed in the solution of wetting agent, e.g. soaps, and anionic or non-ionic water soluble substances which may contain dissolved non-surface active electrolytes, separated by a centrifuge and the wetting agent solution containing the solid is replaced in part at one or several points. Apparatus is described showing the centrifugal separation of the oil and solid particles, followed by further separation and part removal of the wetting agent solution. A modification in which the oily lighter fraction is further dispersed in aqueous wetting agent solution and the resulting solid suspension worked up with that from the first stage, and a modification in which the suspension of solid fractions is heated and separated by aqueous wetting agent solution are also described.</p> |
