CLEANING METHOD OF HYDROGEN SULFIDE- AND MERCAPTAN BEARING OIL Russian patent published in 2009 - IPC C10G29/20 

FIELD: oil and gas production.

SUBSTANCE: invention relates to methods of oil cleaning against volatile sulfur-containing compounds. Invention relates to cleaning method of hydrogen sulfide- and mercaptan bearing oil, with receiving of separator oil, including physical cleaning of oil by means of double concentration of removed components in gaseous phase of distillate by rectification and removal after rectification from bottom of towers of liquid phase, directed into separator oil, chemical cleaning of distillate by means of extraction of hydrogen sulfide and mercaptans from partially condensed secondary concentrate by matched extraction processes, desorption and absorption, implemented in apparatus of column at presence of stripping gas and extracted from oil water, where it is also fed reagent, allowing bactericidal activity to sulphate-restoring bacteria and corrosion-inhibiting action, extracted cleaned phase of secondary concentrate is partially directed into separator oil.

EFFECT: method provides for implementation of nonwaste cleaning technology of oil against hydrogen sulfide and light mercaptan, reduction of reagent consumption, excluding of danger of ingress of reaction products into separator oil and marketable tanks of oil.

5 cl, 3 tbl, 1 dwg