Abstract:
Partial oxidation process of liquid fuels, selected from hydrocarbon and/or oxygenated compounds, together with gaseous fuels, selected from hydrocarbon compounds, natural gas and LPG, by means of a suitable catalytic system comprising the following steps: premixing the reagents and possibly heating them to temperatures ranging from 25 to 400° C., said reagents consisting of said liquid fuels, said gaseous fuels and oxygen or air or oxygen enriched air, optionally in the presence of vapor and/or CO2; reacting the mixture of reagents in the catalytic zone, at inlet temperatures ranging from 50 to 500° C. and space velocities ranging from 1,000 to 1,000,000 Nl reagents/L cat×h, reaching temperatures ranging from 450 to 1350° C.
Abstract translation:选自烃和/或含氧化合物的液体燃料与选自烃化合物,天然气和液化石油气的气态燃料通过合适的催化体系进行部分氧化处理,包括以下步骤:预混合试剂并可能加热它们 所述试剂由所述液体燃料,所述气体燃料和氧气或空气或富氧空气组成,任选地在蒸气和/或CO 2存在下。 使催化剂区域的混合物在入口温度范围为50至500℃,空速为1,000至1,000,000Nl试剂/ L catxh之间,达到450至1350℃的温度。
Abstract:
Equipment for the atomization of a liquid stream by means of a dispersing gaseous stream and for mixing the atomised product with a further suitable gaseous stream, characterized in that it comprises: a feeding zone (A) equipped with means suitable for feeding the liquid stream, the gaseous dispersing stream and further gaseous stream; one or more two-stage atomization zones (N) of the liquid stream by means of the gaseous dispersing stream; a distribution zone (D) of the further gaseous stream.
Abstract:
Partial oxidation process of liquid and/or gaseous fuels, by means of a catalytic system, preferably consisting of oxides, nitrides or oxynitrides containing one or more elements selected from Rh, Ru, Ir, Pt, Ni, Fe, Co, Cr and Cu, comprising the following steps: —premixing and, upon start-up, preheating the reagents consisting of natural gas, oxygen or air or air enriched in oxygen, optionally vapour and/or CO2, to temperatures ranging from 150 to 600° C., below the flash-point values, so that the surface rate of the reaction gases is maintained above the flame rate and the temperature of the reagent mixture in the area preceding the catalytic bed is below its flash point; —reacting the reagent mixture in the reaction zone by interaction of the catalyst, activating it at temperatures ranging from 150 to 600° C. and at space velocities ranging from 50,000 to 5,000,000 Nl reagents/L cat×h, reaching temperatures ranging from 600 to 1350° C.
Abstract:
Catalytic system for partial oxidation reactions of hydrocarbons characterized in that it contains: one or more metals belonging to the 1st, 2nd, and 3rd transition series; one or more elements of group IIIA, IVA or VA, wherein at least one of said metals or said elements is in the form of a nitride.
Abstract:
A process is described for producing synthesis gas and hydrogen starting from liquid hydrocarbon feedstocks, possibly also mixed with gaseous hydrocarbon streams, comprising at least the following operations: 1) nebulizing/vaporizing a stream of a liquid hydrocarbon feedstock consisting of one or more of the following hydrocarbons: naphthas, various kinds of gas oils, such as LCO, HCO and VGO, other products of refining cycles and oil up-grading, such as DAO, other heavy residues, at a N temperature ranging from 50 to 500° C. and a pressure of 2 to 50 atm, the nebulization also being effected with the help of a gaseous propellant, possibly with the addition of CO2, selected from vapour and/or a gaseous hydrocarbon and resulting in the formation of a nebulized/vaporized liquid hydrocarbon stream; 2) mixing the nebulized/vaporized liquid hydrocarbon stream coming from phase 1) with: a) an oxidizing stream, possibly mixed with vapour, b) possibly a gaseous hydrocarbon stream at a temperature ranging from 50 to 500° C. and a pressure of 2 to 50 atm, with the formation of a possibly biphasic liquid-gas reaction mixture; 3) passing the reaction mixture coming from phase 2) through at least a first structured catalytic bed with the formation of a mixture of reaction products comprising H2 and CO, said structured catalytic bed comprising a catalytic partial oxidation catalyst, arranged on one or more layers, the reaction mixture flowing through each of the layers with a contact time varying from 0.01 to 100 ms, preferably from 0.1 to 10 ms; 4) cooling the mixture of reaction products coming from phase 3). The relative equipment for effecting said process is also described.
Abstract:
A device, system and method of mixing two fluids are described herein. A gaseous first fluid is distributed through a distribution zone to a mixing zone by a bundle of pipes parallel to an axis inside which the first fluid is uniformly distributed. A second fluid is uniformly distributed outside the pipes in the distribution zone. The mixing zone is separated from the distribution zone by a pipe-plate supporting the pipes. The pipe-plate has slits or openings to uniformly discharge the second fluid in an axial flow direction into the mixing zone. The pipes extend beyond the pipe-plate into the mixing zone to partialize an outlet flow of the first fluid. In one aspect, the pipes have different lengths to partialize the outlet flow. In another aspect, a terminal portion of the pipes partializes the outlet flow axially, radially, transversally or a combination thereof in the mixing zone.
Abstract:
The present invention relates to a catalytic partial oxidation process for the production of synthesis gas starting from oxygenated compounds deriving from biomasses, comprising at least the following operative phase: reacting, in a suitable reactor, a reaction mixture comprising: a) one or more oxygenated compounds selected from glycerine, ethanol, triglycerides of fatty acids, carbohydrates having the general formula Cn(H2O)nH2 and/or mixtures thereof, b) an oxidant selected from oxygen, air or air enriched with oxygen, c) optionally a hydrocarbon propellant or vapour, said reaction being carried out at a temperature ranging from 450 to 1,100° C., at a pressure ranging from 1 to 50 ATM, with a GHSV (gas hourly space velocity) ranging from 10,000 to 1,000,000 Nl/(kg·h), in the presence of a catalyst comprising one or more transition metals on a solid carrier.
Abstract:
Partial oxidation process of liquid fuels, selected from hydrocarbon and/or oxygenated compounds, together with gaseous fuels, selected from hydrocarbon compounds, natural gas and LPG, by means of a suitable catalytic system comprising the following steps: premixing the reagents and possibly heating them to temperatures ranging from 25 to 400° C., said reagents consisting of said liquid fuels, said gaseous fuels and oxygen or air or oxygen enriched air, optionally in the presence of vapour and/or CO2; reacting the mixture of reagents in the catalytic zone, at inlet temperatures ranging from 50 to 500° C. and space velocities ranging from 1,000 to 1,000,000 Nl reagents/L cat×h, reaching temperatures ranging from 450 to 1350° C.
Abstract translation:选自烃和/或含氧化合物的液体燃料与选自烃化合物,天然气和液化石油气的气态燃料通过合适的催化体系进行部分氧化处理,包括以下步骤:预混合试剂并可能加热它们 所述试剂由所述液体燃料,所述气体燃料和氧气或空气或富氧空气组成,任选地在蒸气和/或CO 2存在下。 使催化剂区域的混合物在入口温度范围为50至500℃,空速为1,000至1,000,000Nl试剂/ L catxh之间,达到450至1350℃的温度。
Abstract:
Partial oxidation process of liquid and/or gaseous fuels, by means of a catalytic system, preferably consisting of oxides, nitrides or oxynitrides containing one or more elements selected from Rh, Ru, Ir, Pt, Ni, Fe, Co, Cr and Cu, comprising the following steps:—premixing and, upon start-up, preheating the reagents consisting of natural gas, oxygen or air or air enriched in oxygen, optionally vapour and/or CO2, to temperatures ranging from 150 to 600° C., below the flash-point values, so that the surface rate of the reaction gases is maintained above the flame rate and the temperature of the reagent mixture in the area preceding the catalytic bed is below its flash point;—reacting the reagent mixture in the reaction zone by interaction of the catalyst, activating it at temperatures ranging from 150 to 600° C. and at space velocities ranging from 50,000 to 5,000,000 Nl reagents/L cat×h, reaching temperatures ranging from 600 to 1350° C.
Abstract:
Equipment for the atomisation of a liquid stream by means of a dispersing gaseous stream and for mixing the atomised product with a further suitable gaseous stream, characterized in that it comprises: a feeding zone (A) equipped with means suitable for feeding the liquid stream, the gaseous dispersing stream and further gaseous stream; one or more two-stage atomisation zones (N) of the liquid stream by means of the gaseous dispersing stream; a distribution zone (D) of the further gaseous stream; the first stage of the atomisation zone (N1) essentially consisting of a tubular core (2), through which the liquid stream passes, equipped with an appropriate series of nozzles (5), situated at the same height, and an outer jacket (4) coaxial to said core, through which the gaseous dispersing stream passes, wherein said nozzles (5) allow the gaseous dispersing stream to enter the tubular core, perpendicularly to the axis of said tubular core (2), effecting a first atomisation of the liquid stream, the second stage of the atomisation zone (N2) essentially consisting of one or more nozzles (6) positioned at the end of the tubular core (2), parallel to the axis of said tubular core, to increase the atomisation degree, the distribution zone (D) essentially consisting of a further jacket (8), through which the further gaseous stream passes, external and coaxial to the jacket (4) of the first atomisation stage, and a series of nozzles (9) situated at the bottom of said further jacket, all positioned at the same height and parallel or inclined with an alpha angle lower than 40° with respect to the axis of the tubular core.