Abstract: A process for the purification of spent process oil, which process comprises, mixing the process oil with an additive comprising a liquid mixture of a) at least one alkanolamine, and b) at least one member selected from the group consisting of alkanoic acids, and alkenoic acids having from 6 to 18 carbon atoms and the melting point/points such that the mixture of a) and b) is liquid at the temperature at which the process is carried out, with a pH-value of said mixture of a) and b) in the range of 5 to 8, preferably 6 to 7, and most preferably 6.3, and said mixture being substantially insoluble in the process oil, forming a two phase mixture upon mixing, and subsequent separation of the phase with process oil from the phase with said mixture of a) and b) with absorbed contaminants. The invention further provides use of alkanoic acids and alkenoic acids having from 6 to 18 carbon atoms in the preparation of a mixture for the purification of spent process oil as well as the use of alkanolamines.

Abstract: A fuel additive composition for the reduction/removal of vanadium-containing ash deposits in gas turbines and other by combustion of vanadium-containing fuel driven apparatuses, which composition as its active ingredient comprises a compound of a metal capable of forming a vanadate with vanadium of said ash deposits is disclosed.

Abstract: The present invention relates to a method for purification of oil which is contaminated with particles of random density and/or water. A collection polymer or polymer mixture which is insoluble in oil and liquid at room temperature and which has a density which is higher than the oil is added to and mixed with the contaminated oil. The collection polymer and the oil are separated by gravity with or without centrifugation such that the oil forms a top phase and the collection polymer or polymer mixture and the main part of the contaminants form a bottom phase. The bottom phase with the collection polymer and the contaminants is removed.

Abstract: The invention relates to a method of purifying contaminated degreasing liquids including (a) adding a collection polymer or polymer mixture forming two phases to the degreasing liquid; (b) mixing the collection polymer with the degreasing liquid; (c) separating the collection polymer and the degreasing liquid gravimetrically, whereby the collection polymer and the major part of the contaminants form a hydrophobic bottom phase and the degreasing agent forms a hydrophilic top phase; (d) removing the bottom phase; and (e) reusing the top phase directly or for further processing.

Abstract: A device for puncturing cortical bone. The device consists of a cannula and inside of it an axially movable needle. The distal end of the needle has an eccentrically shaped tip which, by drilling, forms a hole, larger than the outer diameter of the needle, through corticalis, whereupon the enclosing cannula can be inserted into the drilled hole. In this way the cannula's position in the bone is secured and the cannula functions as a fixed anchored guiding channel for further sampling or treatment.

Abstract: Use of polymeric two-phase systems for removing microbial contaminants from industrial lubricating agents, a method of purifying microbial contaminated lubricating agents by mixing the lubricating agent with a polymeric two-phase system, allowing the mixture to separate so as to form a top-phase containing the lubricating agent and a bottom-phase containing at least part of the microbial contaminants, and separating at least a major part of the microbially enriched bottom-phase from the top-phase, a plant for microbial purification of lubricating agents comprising a mixing tank (4) having means (7, 8) for feeding microbially contaminated lubricating agent (S) to the mixing tank, means (13) for feeding a polymeric two-phase system to the mixing tank, a stirrer (5) in the mixing tank, means (9, 10) for feeding the mixture to a separation device (6) for separating the mixture into a top-phase (T) containing lubricating agents, and a bottom-phase (B) containing microbial contaminants, and means (18) for recoverin