Abstract:
Low viscosity, high concentration drag reducing agents may be prepared by slowly adding a liquid, non-solvent (e.g. isopropyl alcohol) for a drag reducing polymer (e.g. a polyalphaolefin) to a mixture of the polymer and the solvent (e.g. kerosene) in which the polymer is dissolved. When enough non-solvent is added, the polymer precipitates into fine particles. The supernatant mixture of solvent and non-solvent is then removed from the precipitated polymer slurry concentrate. Further solvent contained in the slurry concentrate may be removed by evaporation or further extraction with the liquid, non-solvent. The resulting slurry concentrate dissolves rapidly in flowing hydrocarbon streams to reduce the drag therein, and gives exceptionally good drag reducing results at low concentrations. Additionally, no injection probes or other special equipment is required to introduce the drag reducing slurry into the hydrocarbon stream, nor is grinding of the polymer necessary to form a suitable DRA slurry.
Abstract:
The effectiveness is prolonged for catalytic oxidizers to reduce emissions of both HC and CO from two-stroke gasoline engines. A compound of a platinum group metal is added to the cylinder of the engine to make it available as an active oxidation catalyst by combustion of the fuel. Preferably, the platinum group metal compound is added with the lubricating oil, but can be added to the fuel or through a separate injection.
Abstract:
Additives which improve the low-temperature properties of distillate fuels are the ether-type core-pendant reaction products of (1) reactive non-hydrocarbon core groups and (2) pendant groups comprising aminoalcohols or aminoalcohols/amines with long-chain hydrocarbyl groups attached. The invention hereindisclosed is also directed to fuel compositions containing such low temperature properties improving additives as well as to fuel compositions containing the subject additives in combination with middle distillate flow improvers.
Abstract:
A blend composition comprising (i) one or more base fuels having an aromatics content of below 80% by weight, said one or more base fuels being present in the amount of 10 to 95% by weight of the blend composition; (ii) a fuel additive mixture comprising one or more fuel additives, wherein said additives include an anti-foam agent, said fuel additive mixture being present preferably in the amount of 0.01 to 80% by weight of the blend composition; (iii) an organic molecule containing a moiety CR1R2R3(OH) wherein R1, R2 and R3 are each independently hydrogen or an organic carbon-containing group; and optionally (iv) an aromatic solvent having an aromatics content of greater than 80% by weight; a process for the preparation of said blend composition; and a fuel composition comprising a second base fuel and said blend composition.
Abstract:
The invention relates to the use of specific fungicides for increasing the quality and optionally the quantity of oil-plant products and to the use of said fungicides for reducing the brittleness of the seed coats of seed-oil plants. The invention also relates to oil-plant products obtained from oil plants that have been treated with said fungicides, e.g. oil or seeds from treated oil plants. The invention further relates to regenerative fuels, which contain the oil according to the invention and/or the conversion products thereof. Finally the invention relates to a method for improving combustion in motors and combustion plants, according to which the motors and plants are at least partly operated by a suitable oil-plant product, produced according to the invention.
Abstract:
Fuel mixtures for direct methanol fuel cells are disclosed. The fuels include methanol and additives that react with water to produce methanol and other easily electro-oxidizable compounds including dimethyloxymethane, methylorthoformate, tetramethylorthocarbonate, trimethylborate, and tetramethylorthosilicate. Other additives to improve safety and efficiency of the fuel cell include sulfonated activated carbon particles and metal hydrides, such as LiAlH 4 , NaBH 4 , LiBH 4 , (CH 3 ) 2 NHBH 3 , NaAlH 4 , B 2 H 6 , NaCNBH 3 , CaH 2 , LiH, NaH, KH or sodium bis (2-methoxyethoxy) dihydridaluminate.
Abstract:
Low viscosity, high concentration drag reducing agents may be prepared by slowly adding a liquid, non-solvent (e.g. isopropyl alcohol) for a drag reducing polymer (e.g. a polyalphaolefin) to a mixture of the polymer and the solvent (e.g. kerosene) in which the polymer is dissolved. When enough non-solvent is added, the polymer precipitates into fine particles. The supernatant mixture of solvent and non-solvent is then removed from the precipitated polymer slurry concentrate. Further solvent contained in the slurry concentrate may be removed by evaporation or further extraction with the liquid, non-solvent. The resulting slurry concentrate dissolves rapidly in flowing hydrocarbon streams to reduce the drag therein, and gives exceptionally good drag reducing results at low concentrations. Additionally, no injection probes or other special equipment is required to introduce the drag reducing slurry into the hydrocarbon stream, nor is grinding of the polymer necessary to form a suitable DRA slurry.