油分の水中分散性・浮上速度に及ぼす固体浮遊物の影響

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The size distribution and velocity of separation of oil particles in water produced by mechanical disintegration forces are controlling factors for oily water separators. The purpose of the paper is an experimental and analytical estimation of effects of solid suspension on the factors. An elemental measurement of the terminal velocity of floating small oil particles in water indicates that Stockes' law is effective over a range of 3-300 microns of oil particle size. From another experiment of measuring microphotographically oil particles containing some kinds of solid particles in themselves, such as Fe_2O_3, SiO_2 and Al_2 Si_2O_3(OH)_4, it results that these solid particles increase the mean oil particle diameter, at the same time reducing the velocity of separation of the oil particles in water. Furthermore, in the case of Fe_2O_3, the most "effective" amount of Fe_2O_3 particles for reducing the velocity of separation of oil is estimated experimentally and analytically to be about 20% of oil contents, and the velocity of separation becomes even as low as one-ninth of that in a case without the particles. From some examples of oily water on board, it is indicated that the contens of solid suspension is possibly 10-20% of oil contents. Hence, the effects of solid suspension described above should be taken into consideration in order to make advance in a performance of oily water separators.
独立行政法人海上技術安全研究所の論文
1976-09-30

油分の水中分散性・浮上速度に及ぼす固体浮遊物の影響

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