Snamprogetti

Saipem Limited

Enitecnologie S.p.a.

Luca Eugenio Basini

Alessandra Guarinoni

Domenico Sanfilippo

Andrea Bartolini

Mario Marchionna

Luciano Cosimo Carluccio

Giancarlo Lupi

Alfred Joachim Wilhelm

Gabriele Carlo Ettore Clerici

Gabriele Carlo Clerici

Antonio Bennardo

Nicola Onorati

Stephano Rossini

Andrea Lainati

The present invention relates to a catalytic system comprising at least two catalytic zones of which at least one zone exclusively contains one or more noble metals selected from the group consisting of Rhodium, Ruthenium, Iridium, Palladium and Platinum and at least another zone contains Nickel, said catalytic system characterized in that at least one zone exclusively containing noble metals selected from the group consisting of Rhodium, Ruthenium, Iridium, Palladium and Platinum is always distinct but in contact with at least one zone containing Nickel. One or more metals selected from the group consisting of Rhodium, Ruthenium, Iridium, Palladium and Platinum are possibly added to the catalytic zone or zones comprising Nickel.

Catalytic system for catalytic partial oxidation processes with a short contact time

The present invention relates to a heat exchange system comprising:&#x2014;a single apparatus (N) having an area immersed in a fluid bath (N) and a free space (N) at the head in which a vapour phase is accumulated,&#x2014;at least one interspace (P) open at both ends, situated inside said apparatus and completely immersed in the fluid bath,&#x2014;one or more heat exchange surface (s) (), said system characterized in that it contains all the heat exchange surfaces in a single apparatus and said surfaces are completely immersed in the fluid bath and are fluidly connected to the hot and cold sources, external to said system, through flows of matter. At least one of the heat exchange surfaces () is situated inside the interspace and at least another surface () is situated in the space between said interspace and the walls of the apparatus.

Heat exchange system

A heat exchanger for the cooling of hot gases by means of a cooling fluid includes at least one vertically oriented tank containing a cooling fluid bath and having a collection space of the vapor phase generated above said cooling fluid bath, at least one vertical tubular element inserted inside said tank, and submerged in the bath open at the ends and coaxial to the tank, at least one spiral duct which rotates around the axis of the tank, inserted in the coaxial tubular element, at least one outlet for the vapor phase generated on the head of tank, wherein at least one transfer line is inserted in the lower part of the vertical tank for feeding the hot gases to the tank, the transfer line being open at the two ends, of which one is connected with the vertical tank and the other is free and outside the tank, the transfer line being tubular and protruding laterally outside the exchanger, the transfer line containing at least one central internal duct having an outer jacket in which a cooling fluid circulates, said central internal duct being in fluid connection with the spiral duct and developing vertically along the tubular element inserted in the vertical tank.

Heat exchanger for the cooling of hot gases and heat exchange system

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.

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 in equipment for effecting catalytic partial oxidations and relative catalytic partial oxidation process

Catalytic system for partial oxidation reactions of hydrocarbons characterized in that it contains:

Catalytic system for the production of olefins

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.

Fluid mixing device inserted in or combined with a reactor

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: &#x2014;premixing and, upon start-up, preheating the reagents consisting of natural gas, oxygen or air or air enriched in oxygen, optionally vapour and/or CO, to temperatures ranging from 150 to 600&#xb0; 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; &#x2014;reacting the reagent mixture in the reaction zone by interaction of the catalyst, activating it at temperatures ranging from 150 to 600&#xb0; C. and at space velocities ranging from 50,000 to 5,000,000 Nl reagents/L cat&#xd7;h, reaching temperatures ranging from 600 to 1350&#xb0; C.

Process for catalytic partial oxidation reactions

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&#xb0; 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 CO; reacting the mixture of reagents in the catalytic zone, at inlet temperatures ranging from 50 to 500&#xb0; C. and space velocities ranging from 1,000 to 1,000,000 Nl reagents/L cat&#xd7;h, reaching temperatures ranging from 450 to 1350&#xb0; C.

Catalytic partial oxidation process for producing synthesis gas

Process of catalytic partial oxidation of natural gas in order to obtain synthesis gas and formaldehyde, integrated with processes of hydrogenation of the resulting CO, such as Fischer-Tropsch and methanol syntheses. Such an oxidation is carried out by means of a catalyst constituted by one or more compounds of metals form Platinum Group, which is given the shape of wire meshes, or is deposited on a carrier made from inorganic compounds, in such a way that the level of metal or metals from Platinum Group, as percent by weight, is comprised within the range of from 0.1 to 20% of the total weight of catalyst and carrier, by operating at temperatures comprised within the range of from 300.degree. to 950.degree. C., under pressures comprised within the range of from 0.5 to 50 Atm, at space velocities comprised within the range of from 20,000 to 1,500,000 h.sup.-1.

Process of catalytic partial oxidation of natural gas in order to obtain

A catalytic system for the production of synthesis gas by reacting light hydrocarbons, preferably methane, with CO.sub.2 is described formed from:

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Milan, Italy

Luca Eugenio Basini