Taking aeroplane oil refined from Daqing crude oil as the base oil, adding a given quantity of antioxidants, demulsifying agents, oiliness additives, antirusting and defoaming agents etc. , a series of oil film bearing oils, such as N100, N150, N220, N320, were prepared, and the quality of prepared oil has reached the specification of “American Steel-136” oil film bearing oil and the index requirement of oil film bearing oil of Mobil Vacuoline 300.
Ashless air compressor oils for DAB 68,100,150 have been successfully developed,which are screened and optimized with regular solvent refined neutral oils of HVI 350,HVI 650,HVI 120BS from Daqing and ashless oxidation inhibitor,anti rusting agent,demulsifying agent and anti corrosion agent etc.
An antiwear hydraulic oil conforming GB 11118.1-94 standard can be prepared by addition of 2% DL 9203 compound in refined paraffin-base base oil and the oil product has passed high pressure pump bench test.
The CEC values determined by the suggested method for standard Na montmorillonite(Na M) and refined Na kaolinite (N K, from chemically pure kaolinite) account 84.8 and 5.2 mmol /100 g and by MB method-82.5 and 2.7 mmol/100 g, respectively.
182 million tons of refined oil and 9.412 million tons of ethylene were produced in 2006, increasing respectively by 4.5% and 22.2% on a year-on-year basis.
Certain hypotheses concerning optimal control are refined and the relationship between the Pontryagin maximum principle and Bellman's dynamic programming method in the context of these hypotheses is discussed.
Malyugin on linearization of arithmetical models of logical functions are interpreted and refined from the viewpoint of modern techniques of logical design of integral circuits and nearest neighbor technologies.
The relationship between hydrocarbon type composition and oxidation stability of medium lube oil base stocks has been studied. Oils used in this study are the ~#20 turbine oil stock derived from Daqing crude and the solvent-refined and dewaxed medium-heavy gas oil fraction from Huabei crude. It has been found that the polynuclear aromatics in the oils can more significantly enhance the oxidation stability of the white oil than the binuclear aromatics. Both single-ring aromatics and saturated hydrocarb...
Petroleum sulfonates tailored for use in surfactant/polymer flooding in Laojun- miao teservior at Yumen Oil Field are prepared by sulfonation with gaseuos SO_3 of two refined lube fractions from Yumen Refinery.The optimum reaction conditions and technical parameters of the preparative process are determined on the basis of laboratory experiments.The prepared petroleum sulfonates generate middle phase microemulsions with crude oil or kerosene and formation water over a wide range of mineralities at the...
It is shown previously that under laboratory static conditions flocculant CG-A in combination with polyaluminium chloride (PAC) is very effective for refining oil-con- taining oilfield waste water.This combination is further investigated in a 3-month long-term pilot-scale test under kinetic conditions.The mixing and coagulation processes in the apparatus are analysed to search the optimum process parameters and the use levels of the both chemicals.CG-A together with PAC flocculates suspended solid partic- u...