A pulsed-mixing industrial crystallizer has been part of the dewaxing system (section S-400) in production of lube oils and waxes in the KM-2 complex at Slavneft-Yaroslavnefteorgsintez OJSC since November 1999. During a pilot run, the crystallizer was tested in processing residual raffinale and raffinate of the 420-490degreesC cut of mixed West Siberian crude oils. The pulsed crystallizer has been operating constantly in this section in processing distillate raffinate since March 2000.