METHOD OF DEMETALLISATION AND CRUDE OIL DESULFURISATION IN FLOW Russian patent published in 2012 - IPC C10G32/02 

FIELD: oil and gas industry.

SUBSTANCE: according to the method of crude oil demetallisation and desulfurisation in flow, crude oil is delivered to the first electrolyser for demetallisation of intact oil, then oil under treatment is delivered to the second electrolyser to remove sulphur; crude oil in flow is treated electrochemically using alternating asymmetric current with density 5-10 mA/dm² with asymmetry (relation of negative half-period current density to positive half-period current density I_k/I_a) 8-10 and current frequency determined by the formula: f=f_H1/10An, where I is frequency of released element; A is atomic weight of released element; f_H is frequency of hydrogen release; n is valency of released element.

EFFECT: high efficiency of processing methods, the ease of production and low costs of equipment for the method implementation, its operation upon complex conditioning of oil from sulphur, demetallisation of crude oil in flow meeting ecological requirements.

2 tbl, 1 ex