›› 2018, Vol. 49 ›› Issue (4): 8-14.

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STUDY ON REMOVAL OF ORGANIC CHLORINE COMPOUNDS IN CRUDE OIL

Shi Junge,Wu Mei,Yang Defeng   

  • Received:2017-09-18 Revised:2017-10-18 Online:2018-04-12 Published:2018-04-26
  • Contact: Shi Junge E-mail:shijg.ripp@sinopec.com

Abstract: The organic chlorine compounds in crude oil have different properties in polarity and electrophilicity, which was used to study the removal of the compounds through nucleophilic substitution reaction catalyzed by phase transfer. Using tetrabutylammonium hydroxide as phase transfer reagent,ethylene diamine as alkaline reagent,ethanol and water as solvents,the dechlorination agent obtained by mixing these reagent according to certain mass ratios can effectively remove the organic chlorine compounds in crude oil. The dechlorination rate is above 90%. For the same chlorine compound, the removal rate varies with the dechlorination reaction conditions and electro-desalting conditions. Under the constant dechlorination conditions,the chlorine compounds removal rate also varies with the forms of chlorine compound in the crude oil.

Key words: organic chlorine compound, dechlorination, nucleophilic substitution