PROCESS OF REMOVING SULFUR IMPURITIES FROM PETROLEUM PRODUCTS Russian patent published in 2007 - IPC C10G25/05 C10G25/06 C10G32/02 

FIELD: petroleum processing.

SUBSTANCE: invention relates to petroleum products (crude oil, kerosene, diesel, and other fractions) purification processes, in particular to those involving use of adsorbents. Purification is conducted in centrifugal field of rotating (at 60-2500 ppm) rotor-drum by common rotation of dispersion mixture of adsorbent and starting petroleum products at adsorbent/petroleum product weight ratio (1.5-2.0):1.0 in rotor-drum. In addition, dispersion mixture is exposed to vertical electrical field with intensity E=1000-15000 v/m, while continuously feeding adsorbent and petroleum product at indicated ration into rotor-drum. Dispersion mixture is continuously poured off through outer side of rotor-drum into pot from which mixture is passed to separation step to separate petroleum products from adsorbent. Purified petroleum products are sent to consumer and adsorbent to regeneration and then to reuse in petroleum product purification stage. Residence time of adsorbent/petroleum product dispersion mixture moving from the center to rotor-drum periphery ranges from 10 to 30 min. In instances when electrical conductivity of petroleum products is less than that of natural water by more than one order of magnitude, dispersion mixture including adsorbent, fine conducting powder, and petroleum product is composed at weight ratio (1.0-2.0):(0.1-1.0):1.0, respectively, and the process is conducted as above with the exception that adsorbent/fine conducting powder is regenerated and reused instead of only adsorbent.

EFFECT: increased productivity, enabled continuous desulfurization of freshly produced crude oil, enabled continuous desulfurization of kerosene and diesel fraction under production conditions, and reduced expenses.

3 cl, 2 dwg, 3 ex