Removing aromatic compounds from a hydrocarbon fluid
AssigneeCastrol Limited
InventorsPeter Cormack, Timothy McCabe, James Edward Moss, Richard Pearson, John Michael Redshaw, Kevin Richard West
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Abstract
A method for removing aromatic compounds from a hydrocarbon fluid comprises contacting the hydrocarbon fluid with a solid-phase polymeric material. The solid-phase polymeric material comprises a cross-linked polymer which contains aromatic groups. The method may be used to prevent the build-up of sludge and soot in a lubricant system in an internal combustion engine. A polymer bead comprising a solid-phase polymeric material is also provided.
Claims20
A method of removing aromatic compounds from a lubricant comprising greater than 50% to about 99.5% by weight base oil, the method comprising contacting the lubricant with a solid-phase polymeric material, the solid-phase polymeric material comprising a hyper cross-linked polymer having a mean pore size of from 0.1 to 100 nm and a specific surface area of from 1000 to 3000 m2/g, the cross-linked polymer comprising aromatic groups.
A method for preventing the build-up of soot or sludge in a system which comprises a lubricant comprising greater than 50% to about 99.5% by weight base oil, said method comprising contacting a solid-phase polymeric material with the lubricant, the solid-phase polymeric material comprising a hyper cross-linked polymer, the polymer containing aromatic groups, and operating the system.
Polymer bead or polymer sheet comprising a solid-phase polymeric material, the solid-phase polymeric material comprising a hyper cross-linked polymer, the cross-linked polymer comprising aromatic groups, wherein, on contacting a lubricant comprising greater than 50% to about 99.5% by weight base oil, the polymer bead removes aromatic compounds from the lubricant.
Dependencies are inferred from the claim text.