Abstract:
Comprehensive transportation fuel additive compositions are designed to improve low-quality transportation fuels, particularly for underdeveloped countries. A preferred formula of the present invention comprises at least one octane booster, at least one combustion modifier, at least one corrosion inhibitor, at least one water demulsifier, at least one detergent, at least one solvent, at least one fuel stabilizer, at least one biocide, and at least one fuel lubricant. Under appropriate circumstances, such as, for example, use in cold climates, the preferred formula may also comprise at least one low temperature additive. The comprehensive fuel additives of the present invention have a novel capability of substantially correcting all of the detrimental aspects of low-quality transportation fuel, thereby lowering pollution, improving fuel efficiency, and reducing vehicle maintenance costs. The comprehensive fuel additive formula is preferably tailored and adjusted to meet local needs. Different, but closely related, comprehensive fuel additive formulas are used for motor fuels and diesel fuels.
Abstract:
While silicon-containing ceramics or ceramic composites are prone to material loss in combustion gas environments, this invention introduces a method to prevent or greatly reduce the thickness loss by injecting directly an effective amount, generally in the part per million level, of silicon or silicon-containing compounds into the combustion gases.
Abstract:
This invention provides a method for imparting invisible markings for identification purposes to petroleum hydrocarbons by incorporating one or more infrared fluorescing compounds therein. Certain infrared fluorophores from the classes of squaraines (derived from squaric acid), phthalocyanines and naphthalocyanines are useful in providing invisibly marked petroleum hydrocarbons such as crude oil, lubricating oils, waxes, gas oil (furnace oil), diesel oil, kerosene and in particular gasoline. The near infrared fluorophores are added to the hydrocarbons at extremely low levels and are detected by exposing the marked hydrocarbon compositions to near infrared radiation having a wavelength in the 670-850 nm range and then detecting the emitted fluorescent light via near infrared light detection means.
Abstract:
A fuel mixture containing an ionic complex of an amine salt of a phosphoric acid is effective in reducing the smoke emitted during operation of a two-cycle internal combustion engine. A preferred phosphoric acid derivative is dioctyldithiophosphate. A preferred primary amine component is dihydrogenated tallow amine.
Abstract:
Disclosed are selected 4-hydroxyphenyl anilino alkoxysilanes of the formula: ##STR1## wherein R is hydrogen or a lower alkyl group having from 1 to 4 carbon atoms and each R' is individually selected from an alkyl group having 3 to 12 carbon atoms with the proviso that at least a majority of said R' radicals are sterically hindered alkyl groups. The compounds are disclosed to be effective antioxidants, especially in functional fluids having shielded polysilicate compounds, silicate esters, or silicone oils as base fluids.
Abstract:
Gas turbine fuels, either ash-containing fuels having a high alkali metal content, such as greater than 5 ppm by weight sodium and/or potassium, or substantially ash-free fuels which are burned or combusted under conditions that alkali metal appears in the combustion products, are advantageously combusted in the presence of additive components consisting essentially of compounds of silicon and magnesium which form SiO.sub.2 and MgO at fuel combustion temperatures, the proportions of said compounds being such as to provide a combined SiO.sub.2 and MgO equivalent wherein the SiO.sub.2 :MgO ratio is greater than 2:1, the quantity of said additive components present during the combustion of said fuel being such as to provide a magnesium to vanadium weight ratio of at least 2:1 and a weight ratio of silicon to alkali metal of at least 2:1, preferably greater than 6:1.
Abstract:
MARKED INHIBITON OF CORROSION AND ASH DEPOSITION IN FOSSIL FUEL BURNING EQUIPMENT IS ACHIEVED BY UTILIZING IN THE OPERATION OF SUCH EQUIPMENT ADDITIVE COMPONENTS COMPRISING SOURCES OF SILICON AND MAGNESIUM, THE PROPORTIONS BEING SUCH AS TO PROVIDE A COMBINED SIO2 AND MGO EQUIVALENT WHEREIN THE SIO2:MGO RATIO IS GREATER THAN 2:1. THE ADDITIVE COMPONENTS CAN BE ORGANIC COMPOUNDS, INORGANIC COMPOUNDS OR MIXTURES THEREOF, AND SUCH COMPOUNDS OR MIXTURES THEREOF CAN BE EITHER SOLUBLE OR DISPERSIBLE IN WATER OR OIL. THEY CAN BE INDIVIDUALLY OR COLLECTIVELY BLENDED WITH BULK FOSSIL FUEL PRIOR TO BURNING, INTRODUCED TO THE COMBUSTION ZONE SEPARATELY FROM THE FUEL, OR IN THE CASE OF FURNACES AND BOILERS, INTRODUCED DIRECTLY TO THE ASH DEPOSITION ZONE. IN THE COMBUSTION OF FOSSIL FUELS IN FURNACES, BOILERS AND DIESELS, THE ADDITIVE COMPONENTS SHOULD BE PRESENT IN AMOUNTS TO PROVIDE AT LEAST 0.05 PARTS BY WEIGHT OF COMBINED SIO2 AND MGO EQUIVALENT TO EACH PART BY WEIGHT OF ASH IN SAID FUEL. IN THE COMBUSTION OF FOSSIL FUELS IN GAS TURBINES, WHEREIN EITHER OR BOTH VANADIUM AND ALKALI METAL WILL BE PRESENT IN THE COMBUSTION PRODUCTS, THE ADDITIVE COMPONENTS SHOULD BE PRESENT IN AAMOUNTS TO PROVIDE AT LEAST 2 PARTS BY WEIGHT OF MAGNESIUM TO EACH PART BY WEIGHT OF VANADIUM IN SAID FUEL, WITH THE SIO2: MGO RATIO OF SAID COMPONENTS BEING SUCH AS TO PROVIDE AT LEAST 2 PARTS BY WEIGHT OF SILICON TO EACH PART BY WEIGHT OF ALKALI METAL IN SAID FUEL AND IN THE AIR COMBINING THEREWITH ON COMBUSTION.
Abstract:
The fouling of ports and/or valves in diesel engines by carbonaceous deposits when operated with a distillate diesel fuel, a residual fuel oil, or a mixture thereof, is prevented by uniformly mixing with the fuel a source of silica selected from organic and inorganic silicon compounds which provide free SiO2 at fuel combustion temperature, such source of silica being present in an amount to provide 30-300 ppm. of SiO2 in the fuel. Suitable sources of silica are silica itself (e.g. of 5-10 millimicron particle size), and a solution of tetraethyl orthosilicate in methyl naphthalene. Specifications 777,518 and 842,821 are referred to.
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 CR 1 R 2 R 3 (OH) wherein R 1 , R 2 and R 3 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.