US1754598A

US1754598A - Method of deodorizing fats and fatty oils

Info

Publication number: US1754598A
Application number: US12186A
Authority: US
Inventors: Bollmann Hermann
Original assignee: MARY FULFORD FOSTER
Current assignee: MARY FULFORD FOSTER
Priority date: 1924-09-03
Filing date: 1925-02-27
Publication date: 1930-04-15
Anticipated expiration: 1947-04-15

Description

April 15, 1930.

H. BOLLMANN METHOD OF DEODORIZING FATS ANDl FATTY OILS Filed Feb. 27. 1925 .Patented Apr. l5, 1930 'UNITED s'rArus- PATENT, OFFICE I HERMANN BOLLMANN, F HAMBURG, GERMANY, ASSIGNOR, BY MESNE ASSIGNMENTS, T0 MARY. FULFORD FOSTER, OF WASHINGTON, DISTRICT OF COLUMBIA, TRUSTEE `IME'LHODOF DEODORIZING FATS ANDVFATTY OILS Application tiled February 27, 1925, Seri`a1`No.A12,186, and in Germany. September 3, 1924.

This invention ,relates to a method of deodorizing fats and fatty oils, which as is well known, is effected by treatment of the same with steam. When steam is directly intro- I duced into af bulk of the fats or oils, a very long treatment and a comparatively large amount of steam are necessar for achieving the desired object. Attempts ave been made to avoid this drawback bybringing oil a/nd steam in minutely divided states into Contact "one with the other, and, if desired, by em-l ployingindividual stages in the' apparatus used, i. efby effecting the treatment in successive steps. However, evenwith this method the object desired is not completel achieved, because the distributionl of the oil is not line enough and there is not a sufficiently great surface of the oil exposed to the desired action of the steam. l y

These drawbacks are avoided by the method according tothe whereby it is made possi le to remove instantaneously the unpleasant smell and taste i of the oil with the employmenteof the smalli est possible amount of steam.

According to the invention-the oil or fat, re-heated if desired (it should be in a freely ,liquid state), is atomized by means of a steam-nozzle supplied with superheated steam, and introduced into a space in whichl a redued air-pressure revails.

The steam, carrying t e odors, is drawn off` by means of a vacuum conduit, whilst the bil,

compartment providedv with heating-bodies, where it is freed (by heating) from thestill adhering moisture, which latter is returned in vapour-form into the upper-stage and is likewise drawn oi bythe vacuum. The oil, on the contrary, triclxles down and is introduced in a finely divided state by means of a'steam-nozzle into the next following sta-ge,

where the same cycle of operations is repeated and so on. v

15 Since by atomizing distribution of the oil a considerably larger surface isobtained than -Y in the methods employed hitherto, the'steam employed is enabled to act instantaneously upon the minutbst particles and to remove all those constituents" which become volatile at Eresent invention, 1

in the form of drops, iiows down into the next the tem erature attained by the action of the i stit'ute heatin bodies interposed between,

the former an provided withheating-tubes 3. The oil is atomized in each oneof the stages 1 by means of steam-nozzles 4 of injector form fed with superheated steam as above stated. VThe oil accumulates after leaving the heating stages 2 in trays 7. 5 is a condu1t through which'the steam is continuously drawn off to a vacuum pump, or other vacuyum-producing device. The steam coming upwardly from a stage l, into the next higher ieatlzig stage 2, can pass around and over the ray The purified oil leaves the apparatus through 'a pipe 6, whilst the heating-steam enters the heating stages 2 through a pipe 8 and leaves the same throu h a pipe 9.

The term fatty oil 1s hereinafter employed to embrace both those which are normally solid (fats and those which are normally liquid (oils I claim 1 1. A method of deodorizing fatty oils which comprises atomizing the` same bysuperheated steam into a compartment in whlch a pressure below atmospheric 1s mamtained, allowing the oil to flow over heatingr surfaces tovaporize moisture, and collecting the said oil, and repeatin said cycle of operations until the said oil 1s sufficiently puri-` fied, and drawing off said oil, all while continuously maintaining a pressure below atmospheric in the treating vessel by drawing oli' the steam carrying va-porized impurities, from the top of said compartment.

2. A process of treating fatty oil containrality of stream in thin 1ayers,'col1ecting the several streams and repeating such steps until the oil is suiciently purified, such fiowing and collecting operations being conducted in artial vacuum and continuously withdrawlng steam and va ors from the upper art of the treating vesse whereby the parta vacuum is maintained in the treating vessel.

In testimon whereof I aix my signature.

E RMANN BOLLMANN.