摘要
PetroChina Lanzhou Petrochemical Company conducted commercial tests for application of two types of diesel demulsifiers, the HPL-2 and GX-02 demulsifiers, in order to solve the emulsion problem arising from caustic washing of straight-run diesel fraction obtained from atmospheric and vacuum distillation unit at the Lanzhou refinery. After addition of each demulsifier into the diesel fraction the oil content in caustic residue was apparently decreased, and discharge of waste caustic was reduced, resulting in the elimination of emulsification and a significant increase of economic benefits. When 70 ppm of the HPL-2 demulsifier was added to diesel fraction, the oil content in waste caustic exiting the second-stage caustic wash settling tank was reduced to 2.45% from 7.90 %, whereas this value was reduced to 2.81% from 5.96% with addition of the GX-02 demulsifier.
PetroChina Lanzhou Petrochemical Company conducted commercial tests forapplication of two types of diesel demulsifiers, the HPL-2 and GX-02 demulsifiers, in order to solvethe emulsion problem arising from caustic washing of straight-run diesel fraction obtained fromatmospheric and vacuum distillation unit at the Lanzhou refinery. After addition of each demulsifierinto the diesel fraction the oil content in caustic residue was apparently decreased, and dischargeof waste caustic was reduced, resulting in the elimination of emulsification and a significantincrease of economic benefits. When 70 ppm of the HPL-2 demulsifier was added to diesel fraction,the oil content in waste caustic exiting the second-stage caustic wash settling tank was reduced to2.45% from 7.90 %, whereas this value was reduced to 2.81% from 5.96% with addition of the GX-02demulsifier.
