Abstract:
PURPOSE: To provide a manganese-containing additive and a method for reducing the amount of carbon in fly ash resulting from the combustion of a mixture of coal and a manganese-containing compound using the manganese-containing additive. CONSTITUTION: The method comprises tue steps of (a) mixing coal with an additive that includes a manganese-containing compound to form a mixture thereof; and (b) combusting the mixture in a combustion chamber, wherein the manganese-containing compound is present in an amount effective to reduce the amount of carbon in fly ash resulting from the combusting of the coal in the combustion chamber.
Abstract:
Aviation gasolines and additives may have manganese-containing anti-knock components. The scavengers herein mitigate the possible deleterious effects from using the manganese-containing anti-knock. The scavengers include molecules with a central atom of a Group 15 element other than nitrogen. Entities that are attached to the central atom are electron withdrawing entities including electron deficient atoms and electron deficient functional groups.
Abstract:
There is disclosed a method for combusting a secondary organometallic compound in an engine including (a) combining a secondary organometallic compound and methylcyclopentadienyl manganese tricarbonyl, (b) introducing the combination from (a) into a fuel, and (c) causing the fuel from (b) to be combusted in the engine.
Abstract:
A low-emissions diesel fuel comprises a catalyzed blend of fatty acid esters, preferably derived from soybean oil and/or tallow and aviation kerosene. The catalyzed blend is effective in lowering regulated emission pollutants, among which are NOx, particulates, hydrocarbons and carbon monoxide. The catalyst will comprise fuel-soluble platinum and/or cerium or iron. The cerium or iron are typically employed at concentrations of from 2 to 25 ppm and the platinum from 0.05 to 2 ppm, with preferred levels of cerium or iron being from 5 to 10 ppm, e.g., 7.5 ppm, and the platinum being employed at a level of from 0.1 to 0.5 ppm, e.g., 0.15 ppm. A preferred ratio of cerium and/or iron to platinum is from 75:1 to 10:1. The jet fuel component will typically be employed at a volume ratio to the fatty acid esters of from about 2:1 to about 5:1, e.g., about 4:1. The full range of blends extends from 50:1 to 1:50 with some benefit. The jet fuel component of the blend preferably contains grade 55, 50-300 ppm detergent, 25 to about 500 ppm lubricity additive and 0.1-1 ppm platinum COD and 5-20 ppm cerium oleate or octoate. In addition to the fuel blend, a method is provided for reducing the emissions of pollutants from a diesel engine, comprising running the engine on a fuel as defined.
Abstract:
A low-emissions diesel fuel comprises a catalyzed blend of fatty acid esters, preferably derived from soybean oil and/or tallow and aviation kerosene. The catalyzed blend is effective in lowering regulated emission pollutants, among which are NOx, particulates, hydrocarbons and carbon monoxide. The catalyst will comprise fuel-soluble platinum and/or cerium or iron. The cerium or iron are typically employed at concentrations of from 2 to 25 ppm and the platinum from 0.05 to 2 ppm, with preferred levels of cerium or iron being from 5 to 10 ppm, e.g., 7.5 ppm, and the platinum being employed at a level of from 0.1 to 0.5 ppm, e.g., 0.15 ppm. A preferred ratio of cerium and/or iron to platinum is from 75:1 to 10:1. The jet fuel component will typically be employed at a volume ratio to the fatty acid esters of from about 2:1 to about 5:1, e.g., about 4:1. The full range of blends extends from 50:1 to 1:50 with some benefit. The jet fuel component of the blend preferably contains grade 55, 50-300 ppm detergent, 25 to about 500 ppm lubricity additive and 0.1-1 ppm platinum COD and 5-20 ppm cerium oleate or octoate. In addition to the fuel blend, a method is provided for reducing the emissions of pollutants from a diesel engine, comprising running the engine on a fuel as defined.
Abstract:
An improved diesel operation system employs a lightly diesel oxidation catalyst (DOC), preferably with a platinum containing fuel borne catalyst (FBC) in the fuel. The DOC is at least partially lightly catalyzed with precious metal catalyst, e.g., platinum group metal, having a metal loading of from about 3 to 15 grams per cubic foot to minimize formation of NO2 in the exhaust gas. Preferred fuel borne catalyst levels will be low, e.g., from 0.05 to 0.5 ppm for platinum and 3 to 8 ppm for cerium and/or iron, thereby providing effective engine out emissions reductions without discharging excessive amounts of metal catalysts or NO2 to the atmosphere.
Abstract:
A method of improving the combustion of a fuel by adding a catalyst or combustion enhancer at an extremely low concentration, preferably in the range of 1 part catalyst per 200 million parts fuel to 1 part catalyst per 6 trillion parts fuel. The catalyst or combustion enhancer may be selected from a wide range of soluble compounds. The method may comprise the steps of an initial mixing of the catalyst or enhancer with a suitable solvent and then subsequent dilution steps using solvents or fuel. Suitable solvents include water, MTBE, methylketone, methylsobutylketone, butanol, isopropyl alcohol and other hydrophilic/oleophilic compounds.
Abstract:
A fuel composition of the present invention exhibits minimized hydrolysis and increased fuel stability, even after extended storage at 65null F. for 6-9 months. The composition, which is preferably not strongly alkaline (3.0 to 10.5), is more preferably weakly alkaline to mildly acidic (4.5 to 8.5) and most preferably slightly acidic (6.3 to 6.8), includes a lower dialkyl carbonate, a combustion improving amount of at least one high heating combustible compound containing at least one element selected from the group consisting of aluminum, boron, bromine, bismuth, beryllium, calcium, cesium, chromium, cobalt, copper, francium, gallium, germanium, iodine, iron, indium, lithium, magnesium, manganese, molybdenum, nickel, niobium, nitrogen, phosphorus, potassium, palladium, rubidium, sodium, tin, zinc, praseodymium, rhenium, silicon, vanadium, or mixture, and a hydrocarbon base fuel.
Abstract:
In this process for the selective noncatalytic reduction of the emission of pollutants from oil-fired boiler plants, chemical compounds which affect the combustion process are admixed, in solutions miscible with the liquid fuel, in metered amounts to the liquid fuel or to the combustion air, among these compounds being salts of organic acids, such as naphthenates, octoates, tallates, salts of sulfonic acids, saturated or unsaturated fatty acids, such as oleic acid, and tall oil, with metals from the group of K, Ba, Mg, Ca, Ce, Mn, Fe; rare earth metals; organometallic compounds, such as carbonyl compounds, mixed cyclopentadienylcarbonyl compounds, or aromatic complexes of the transition metals Fe or Mn. For the purpose of minimizing the NO.sub.x values in the waste gas and the dust load with economical consumption of chemicals, a reducing agent is introduced in metered quantities into the firebox (burner chamber) via a boiler metering system with the use of the liquid or also gaseous carrier stream as an aqueous solution of urea or also urea precursors, such as ammonia or ammonium carbonate, which can also contain further ingredients, such as alkanols, alkanecarboxylic acids, alkanals, or alkanones.
Abstract:
A fuel composition having enhanced tolerance for water comprises a hydrocarbon base fuel, a polyether more soluble in the hydrocarbon base fuel than in water, and, optionally, a supplemental fuel component such as, for example, an alcohol.