Deodorizer Technology

The stripping efficiency of a deodorizer can be improved either by incorporating a packed column or by reducing the operating pressure of the deodorizer (Table 15). The best solution, of course, is a combination of both, but this results in an expensive deodorization technology. 

Deodorization can be performed in different ways (continuous, semicontinuous, or batch). The selection of most appropriate deodorizer technology depends on many factors, such as the number of feedstock changes, heat recovery, investment, and operating costs. 

In recent years, new developments in deodorization technology were mainly determined by the strong demand from edible oil refiners to reduce the capital and operating cost of deodorizers and the increased importance of the nutritional aspects of food oils and fats. 

New developments in deodorization technology are driven mainly by the continuous need for more efficient processes and increased attention to the nutritional quality of food oils and fats. 

Optimizing deodorization technology and process conditions for the removal of specific contaminants (pesticides, PAH, dioxins, PCB, mycotoxins, ) and maxi-... 

P. Sjoberg, Deodorization technology, Lipid Technology, 1991, 3, 52-57. D.A. Allen, Lipid Technologies and Applications (ed. F.D. Gunstone and F.B. Padley) Marcel Dekker, New York (1997), pp. 137-167. 

Semiconductor surfaces, 9 730-731 Semiconductor technology, 19 127 Semiconductor transport, 22 237-239 Semiconductor-vacuum interface, 22 241 Semicontinuous deodorizer, 10 815 Semicontinuous dyeing, 9 211-213 Semicontinuous ion-exchange systems, 14 403... 

Gas sensors are being employed to characterise the noses of perfumes, fruits, wines and other foodstuffs and to measure the effectiveness of deodorants. The range of sensor types and applications is expanding at a remarkable rate with the term electronic noses introduced to describe the technology. 

First a coarse O/W emulsion is prepared and, on heating, phase inversion occurs. After cooling down through the microemulsion zone, the finely dispersed nature of the microemulsion is partially retained and emulsions with drop sizes of about 100 nm result [28-30]. They show considerable long-term stability as a consequence of the Brownian motion of the oil droplets [31] and pump sprayable deodorants are one of the cosmetic products based on this technology. 

Figure 2-22 Trans Isomer Formation in Sunflower Oil as a Function of Deodorization Temperature. Source Reprinted from R.G. Ackman, Animal and Marine Lipids, in Improved and Technological Advances in Alternative Sources of Lipids, B. Kamel and Y. Kakuda, eds., p. 301, 1994, Aspen Publishers, Inc.

M. Kellens De Smet Technologies Services, Brussels, Belgium, Deodorization. 

Vacuum Steam Distillation. There has been direct application of cholesterol removal by vacuum steam distillation, an old technology. This process is widely used in the fats and oils industry for deodorization. 

Design and technological breakthroughs have improved efficiency of the system. Performance of new packed-column deodorizers for physical refining is predicted by computer calculation, for which a special program has been developed on the basis of experience with earlier columns (22). 

There remain some exciting challenges in the oil-refining industry for the future. The introduction of new technologies (e.g., use of enzymes, ultrafiltration, etc.) may require the development of specific refining and deodorization methods. 

Ozone in the lower atmosphere is also produced as a result of modem technology. Equipment that produce sparks, arcs, or static discharge ultraviolet and other ionizing radiation commercial applications such as air purifiers and deodorizers in homes, hospitals, and offices and closed environmental systems such as aerospace cabins and submarine chambers due to electric discharge from equipment or ionizing radiation, are some examples. 

Bernardini, M. Deodorization. Proceedings of the World Conference on Oilseed Technology and Utiliza-tion T. . Applewhite, Ed. AOCS Press Champaign, IL, 1993 pp. 186-193. 

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