METHOD TO DETECT EFFICIENCY OF DISPERSING ADDITIVES TO RESIDUAL FUELS Russian patent published in 2012 - IPC G01N33/22 G01N21/00 

FIELD: machine building.

SUBSTANCE: method includes production of residue, extraction of the produced residue by any marine fuel with a dispersing additive and monitoring of extraction process by value of an information indicator, besides, the information indicator is optical density of a sample, for this purpose the residue is produced by centrifugation in two flasks from a reference residual fuel, from which the residue and walls of the flasks are washed by flushing with a petroleum ether without damage of the residue structure, to extract the residue, two portions of marine diesel fuel are prepared for high-speed diesel engines, one of which does not contain a dispersing additive, and the second one contains it in concentration of 0.2%, optical density is measured in both portions of the marine diesel engine for high-speed diesel engines, in case their difference is above 0.005 units, in the portion with lower optical density the reference residual fuel is added in drops to achieve the difference ≤0.005 units, the residue is extracted under room temperature in closed flasks, at the same time in the first flask - by the prepared portion of marine diesel fuel for high-speed diesel engines with fuel without an additive, and in the second one - with an additive, which are introduced into flasks without damage of the residue structure, in 0.25 hr upon completion of introduction of marine diesel fuel portions for high-speed diesel engines, the first measurement of optical densities is carried out in both portions of the solution, taken from one level of flasks, in 24-25 hr after the first measurement, the second measurement of optical densities is carried out in solutions taken from one level of flasks, and efficiency of the dispersing additive E_add is calculated on the basis of the given ratio, and is the value E_add>100%, the additive is recognised efficient.

EFFECT: tests speed-up.

1 ex, 1 tbl