摘要:
Reduction of sulfur-containing and nitrogen-containing compounds from hydrocarbon feeds is achieved by first contacting the entire feed with a hydrotreating catalyst in a hydrotreating reaction zone operating under mild conditions to convert the labile organosulfur and organonitrogen compounds. An extraction zone downstream of the hydrotreating reaction zone separates an aromatic-rich fraction that contains a substantial amount of the remaining refractory organosulfur and organonitrogen compounds. The aromatic-lean fraction is substantially free of organosulfur and organonitrogen compounds, since the non-aromatic organosulfur and organonitrogen compounds were the labile organosulfur and organonitrogen compounds which were initially removed by mild hydrotreating. The aromatic-rich fraction is oxidized to convert the refractory organosulfur and organonitrogen compounds to oxidized sulfur-containing and nitrogen-containing hydrocarbon compounds. These oxidized organosulfur and organonitrogen compounds are subsequently removed.
摘要:
High energy (e.g., ultrasonic) mixing of a liquid hydrocarbon feedstock and reactants comprised of an oxidation source, catalyst and acid yields a diesel fuel product or additive having substantially increased cetane number. Ultrasonic mixing creates cavitation, which involves the formation and violent collapse of micron-sized bubbles, which greatly increases the reactivity of the reactants. This, in turn, substantially increases the cetane number compared to reactions carried out using conventional mixing processes, such as simple mechanical stirring. Alternatively, an aqueous mixture comprising water and acid can be pretreated with an oxidation source such as ozone and subjected to ultrasonic cavitation prior to reacting the pretreated mixture with a liquid hydrocarbon feedstock.
摘要:
Mixing-assisted oxidative desulfurization method of diesel fuel and the continuous desulfurization device thereof is disclosed herein. Because of the dangers of sulfur content in gasoline and other petroleum products, many governments have required the sulfur content of these petroleum products to be reduced so as to safeguard public safety and health. Desulfurization of fossil fuels is provided by the combination of fossil fuels with an aqueous mixture of ozone or hydrogen peroxide and a Tetraoctylphosphonium salt phase transfer catalyst, and the mixture is then reactive mixed to form oxidize sulfur compounds in the fuel. The polar oxidized sulfones species are removed via another mixing step. The desulfurization device (10) can be in the form of a portable device which provides for continuous mixing-assisted desulfurization for the selective removal of sulfur containing compounds from fossil fuels such as diesel fuel or other hydrocarbons.
摘要:
A method of treating a hydrocarbon fluid (100) that includes contacting the hydrocarbon fluid with an effective amount of ozone. A method for separating contaminants from a contaminated material (100) includes supplying the contaminated material to a processing chamber (103), moving the contaminated material through the processing chamber, heating the contaminated material by externally heating the processing chamber (112) so as to volatilize the contaminants in the contaminated material, removing vapor resulting from the heating, wherein the vapor comprises the volatilized contaminants, collecting, condensing, and recovering the volatilized contaminants, and contacting the volatilized contaminants with an effective amount of ozone.
摘要:
A process for the conversion of hydrocarbons that are solid or have a high boiling temperature and may be laden with metals, sulfur or sediments, into liquids (gasolines, gas oil, fuels) with the help of a jet of gas properly superheated between 600 and 800°C. The process comprises preheating a feed (5) in a heater (8) to a temperature below the selected temperature of a reactor (10). This feed is injected by injectors (4) into the empty reactor (10) (i.e., without catalyst.) The feed is treated with a jet of gas or superheated steam from superheater (2) to activate the feed. The activated products in the feed are allowed to stabilize at the selected temperature and at a selected pressure in the reactor and are then run through a series of extractors (13) to separate heavy and light hydrocarbons and to demetallize the feed. Useful products appearing in the form of water/hydrocarbon emulsions are generally demulsified in emulsion breaker (16) to form water laden with different impurities. The light phase containing the final hydrocarbons is heated in heater (98) and is separated into cuts of conventional products, according to the demand for refining by an extractor (18) similar to (13).
摘要:
A fuel for a diesel engine is produced by using a fish waste oil or a mixture of a vegetable waste oil and the fish waste oil which have conventionally been wasted as a staring material. Fish oil (virgin oil or fish waste oil) or a mixture of the fish oil and vegetable oil (virgin oil or vegetable waste oil) (hereinafter referred to as starting material) is subjected to stirring treatment while introducing ozone, and an oxidation-reduction agent and a polymerization inhibitor are added during the stirring treatment. Moreover, it comprises the respective steps of a first treatment step in which a stirring treatement is carried out while introducing ozone to the above-mentioned starting material, and an oxidation-reduction agent and a polymerization inhibitor are added during the stirring treatement, a second treatment step in which the material obtained in the above-mentioned first step is filtered and a stirring treatment is further carried out while introducing ozone again, and a step of introducing a vegetable additive to the resulting material by the second treatment step.
摘要:
A process for the conversion of hydrocarbons that are solid or have a high boiling temperature and may be laden with metals, sulfur or sediments, into liquids (gasolines, gas oil, fuels) with the help of a jet of gas properly superheated between 600 and 800°C. The process comprises preheating a feed (5) in a heater (8) to a temperature below the selected temperature of a reactor (10). This feed is injected by injectors (4) into the empty reactor (10) (i.e., without catalyst.) The feed is treated with a jet of gas or superheated steam from superheater (2) to activate the feed. The activated products in the feed are allowed to stabilize at the selected temperature and at a selected pressure in the reactor and are then run through a series of extractors (13) to separate heavy and light hydrocarbons and to demetallize the feed. Useful products appearing in the form of water/hydrocarbon emulsions are generally demulsified in emulsion breaker (16) to form water laden with different impurities. The light phase containing the final hydrocarbons is heated in heater (98) and is separated into cuts of conventional products, according to the demand for refining by an extractor (18) similar to (13).
摘要:
The invention relates to chemistry and in particular to technology for processing hydrocarbon fuel, including engine fuel. The invention makes it possible to obtain a fuel with high cetane and octane numbers by means of the following: the initial fuel supply occurs simultaneously with ejection; an ozone containing gas is fed into the ejection area; turbulent flows are created by displacement of such a mixture; the transformed mixture is directed into a volume with a stable pressure level; and thermodynamic equalization of the mixture parameters is achieved. During thermodynamic equalization, sprayed water is injected into said mixture.
摘要:
A process for eliminating and removing impurities including sulfur compounds and microorganisms as well as preventing further microbial contamination is accomplished by treating petroleum products or other hydrocarbon fluids with an aqueous solution of an oxidizing agent such as hydrogen peroxide or ozone together with a metallic ion catalyst, such as a mixture of ferric chloride and cupric chloride, where the metal ion is capable of forming activated oxygen complexes in the presence of such oxidizing agent, or by treatment with an aqueous solution of metallic ion catalyst and activated oxygen complexes formed from permanganate, peroxyborate or chromate ions. The products produced by such process are substantially free of viable forms of microbial contamination.