Fractional-distillation sentence example
This layer is separated, and the phenol recovered by a process of fractional distillation.
In the routine examination of crude petroleum it is customary to determine the specific gravity, and the amount of water and earthy matter in suspension; the oil is also frequently subjected to a process of fractional distillation in order to ascertain whether there has been any addition of distilled products or residue.
Petroleum spirit is tested for specific gravity, range of boilingpoints, and results of fractional distillation.
They may be separated by fractional distillation.
By fractional distillation is meant the separation of a mixture having components which boil at neighbouring temperatures.Advertisement
Of especial importance is Sidney Young, Fractional Distillation (1903).
From the tar distillate, the chrysene can be fractionally precipitated, and the fluoranthene can be separated from most of the pyrene by fractional distillation in a partial vacuum.
Antimony trichloride ("Butter of Antimony"), SbCl 31 is obtained by burning the metal in chlorine; by distilling antimony with excess of mercuric chloride; and by fractional distillation of antimony tetroxide or trisulphide in hydrochloric acid solution.
It is found among the products formed in the destructive distillation of wood, sugar, cellulose, &c., and for this reason it is always present in crude wood spirit, from which the greater portion of it may be recovered by fractional distillation.
The solubility of naphthalene by various oils has led some engineers to put in naphthalene washers, in which gas is brought into contact with a heavy tar oil or certain fractions distilled from it, the latter being previously mixed with some volatile hydrocarbon to replace in the gas those illuminating vapours which the oil dissolves out; and by fractional distillation of the washing oil the naphthalene and volatile hydrocarbons are afterwards recovered.Advertisement
Give examples of how the products of fractional distillation of crude oil can be used.
The hydrocarbon occurs in wood-tar and in petroleum, and is prepared commercially by fractional distillation of the light oil fraction of the coal-tar distillate (see Coal Tar).
This crude pyroligneous acid is then refined by fractional distillation to yield a food grade version that is suitable for use in health products.