Premium
The relationship between the capacity and efficiency of dewaxing filters
Author(s) -
Butler R. M.
Publication year - 1958
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450360406
Subject(s) - wax , filtration (mathematics) , filter (signal processing) , yield (engineering) , process engineering , filter cake , dilution , pulp and paper industry , chromatography , biological system , mathematics , chemistry , thermodynamics , computer science , statistics , engineering , physics , organic chemistry , biology , computer vision
The throughput, and the sharpness of separation of the oil from the wax, are factors which must be balanced against each other in the design and operation of a lubricating oil dewaxing plant. Changes in this balance can be made by varying such quantities as dilution ratio, speed of filter rotation, quantity of wash applied and wax content of the feed. The relations between these quantities and their effect on the performance of a plant are discussed. The treatment is largely a theoretical one and involves an extension of conventional filtration theory to take account of the quantity of liquid remaining in the filter cake and the rate at which wash can be applied to displace it. The predicted interrelationships between the different variables have been shown by families of curves plotted on coordinates of dewaxed oil output (capacity) and dewaxed oil yield (efficiency). From these diagrams it is possible to predict the effect of changes in the operating conditions on the yield and capacity for a plant.