METHOD OF DETERMINING OPTIMUM PARAMETERS FOR THE REFINING OF LIGHT OIL PRODUCTS AND THE DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC C10G15/08 

FIELD: petroleum industry.

SUBSTANCE: invention relates to a method for refining light petroleum products for the production of winter diesel fuel from them with the establishment of optimal parameters at their refining by adjusting the parameters of the cavitation effect and the destructive hydrogenation (hydrogenation) associated with such an indicator of the target product as its turbidity temperature and analysis of intermediate samples from each cavitation exposure apparatus and hydrogenator, determined by the results of IR spectroscopy and methods of physicochemical analysis of cooled samples of products before and after each cavitation apparatus and hydrogenation apparatus, in which the starting product is first subjected to the above analysis, then, by means of a control and safety unit, in an acoustic cavitator with a magnetostrictive radiator of ultrasonic vibrations and a hydrogenator, the initial parameters of their operation. In this case, the initial product is first subjected to a cavitation effect, intermediate sample is taken at the outlet of the cavitator, cooled to 30–50 °C, analyzed, removing its spectra and determining the physicochemical parameters, including the cloud point, the optimum performance of the cavitator is determined by comparing the results of the analysis of the samples with the expected properties of the samples characterizing their low-temperature properties, if necessary, the parameters of the cavitator are adjusted and then, if necessary, a repeated cavitation effect on the initial product is carried out, taking into account possible adjustment of the parameters of the cavitator, obtained cooled samples at the outlet of the cavitator are re-analyzed, and the cavitation effect on the initial product is terminated until the expected values of the intermediate product are achieved at the exit from the cavitator, resulting intermediate is then subjected to destructive hydrogenation at 260–300 °C in the hydrogenation reactor on the catalyst to which hydrogen and/or methane are fed, an intermediate sample is taken at the outlet of the hydrogenator, it is cooled and analyzed by the above methods, comparing the results of the analysis with the expected values that the intermediate product should have at the output of the hydrogenator, further, if necessary, the parameters of the hydrogenation process are adjusted and if necessary the hydrogenation process is repeated, terminating it to obtain an intermediate product with the expected properties and determining the optimum parameters of the hydrogenator to produce a product with the expected properties, product obtained is fed to a separator where the gaseous products are separated, the liquid hydrocarbon fraction is subjected to fractional distillation in a separation column, light fraction is returned to the storage tank of the starting product and the desired product in the form of a fraction corresponding to the winter diesel fuel is analyzed for compliance with the tested requirements, required for winter diesel fuel with a turbidity of not higher than minus 25 °C. Invention also relates to the device.

EFFECT: technical result is the obtaining of optimal parameters of the process of processing light petroleum products into light oil products with specified operational properties.

2 cl, 3 dwg, 6 ex, 3 tbl