Applying multiplex aids in butanone - toluene solvent dewaxing process of Fushun Refinery No. 2

Investigation of dewaxing multiplex aids was finished using the fraction of the second vacuum side - streams of Fushun Refinery No. 2 as feedstocks in this experiment. The experimental keyunit - intermission process had been set up in laboratory. The new deeply cool equipment different from the domestic one is in simulating entirely chilling condition of industrial butanone - toluene solvent dewaxing plant of Fushun Refinery No. 2. So the result of this experiment is better. The results show that when the adding amount of multiplex aids is 500 μg·g-1. Increasing extent of the yield of dewaxing oil by adding the multiplex aids is better than by single aids and the increasing extent of the speed of filtration by adding multiplex aids is close to the speed by adding single aids. The best amount of adding multiplex aids is 200 μg·g-1D5 and 300 μg·g-1D4. Under this condition, the yield of the dewaxing oil is increased by 7% and the speed of filtration is increased by 50%. These five domestic additives have not any bad effect on the wax and dewaxing oil of Fushun Refinery No. 2.