Hazard assessment of edible oil refining: Formation of flammable mixtures in storage tanks

2011 ◽  
Vol 105 (1) ◽  
pp. 105-111 ◽  
Author(s):  
Gabriele Landucci ◽  
Benedetta Nucci ◽  
Luigi Pelagagge ◽  
Cristiano Nicolella
Keyword(s):  
Hazard Assessment ◽  
Edible Oil ◽  
Oil Refining ◽  
Storage Tanks

Sloshing Characteristics of Single Deck Floating Roofs in Aboveground Storage Tanks: Natural Periods and Vibration Modes

2009 ◽  
Author(s):  
Shoichi Yoshida ◽  
Kazuyoshi Sekine ◽  
Katsuki Iwata
Keyword(s):  
Structural Integrity ◽  
Oil Refining ◽  
Vibration Modes ◽  
Storage Tanks ◽  
Severe Damage ◽  
Element Analysis ◽  
Linear Elastic ◽  
Oil Storage ◽  
Hydrodynamic Coupling ◽  
Roof Design

The floating roofs are widely used to prevent evaporation of content in large oil storage tanks. The 2003 Tokachi-Oki earthquake caused severe damage to the floating roofs due to liquid sloshing. The structural integrity of the floating roofs for the sloshing is urgent issue to establish in the petrochemical and oil refining industries. This paper presents the sloshing characteristics of the single deck floating roofs in cylindrical storage tanks. The hydrodynamic coupling of fluid and floating roof is taken into consideration in the axisymmetric finite element analysis. It is assumed that the fluid is incompressible and inviscid, and the floating roof is linear elastic while the sidewall and the bottom are rigid. The basic vibration characteristics, natural periods and vibration modes, of the floating roof due to the sloshing are investigated. These will give engineers important information on the floating roof design.

scholarly journals Trans fatty acid-forming processes in foods: a review

2007 ◽  
Vol 79 (2) ◽  
pp. 343-350 ◽  
Author(s):  
Clayton A. Martin ◽  
Maria C. Milinsk ◽  
Jesuí V. Visentainer ◽  
Makoto Matsushita ◽  
Nilson E. de-Souza
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Cardiovascular System ◽  
Human Health ◽  
Vegetable Oils ◽  
Trans Fatty Acids ◽  
Daily Intake ◽  
Edible Oil ◽  
Oil Refining ◽  
Industrialized Countries

There is a mounting concern about the intake of foods containing trans fatty acids (TFA) due to their deleterious effects on human health, mainly on the cardiovascular system. In this way, it is important to consider the processes that form TFA in foods, and the alternatives to minimize them. Among the processes that result in the formation of TFA, the hydrogenation of vegetable oils stands out for its impact on the diet of people living in industrialized countries. Other processes such as edible oil refining, meat irradiation, food frying, and biohydrogenation also contribute to increase the daily intake of TFA.

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