Abstract:
A plasma fuel reformer (12) reforms hydrocarbon fuels to produce a reformed gas which is supplied to the intake of an internal combustion engine, an emission abatement device, or a fuel cell. The plasma fuel reformer (12) includes a catalytic substrate (20) positioned in the reaction chamber of the plasma fuel reformer (12) to facilitate the reforming process of gas exiting the plasma-generating assembly of the reformer (12). A method of operating a plasma fuel reformer (12) is also disclosed.
Abstract:
An axial/radial- or radial-flow catalytic reactor (1) has inlet (2) and outlet (3) ports and a bed of particulate catalyst (6) disposed as e.g. a cylinder or cone round a central region (5) communicating with one of the ports. For at least part of the height of the catalyst bed (6), the exterior surface of the catalyst bed has a diameter less than that of the reactor thus leaving a space (8) between the exterior surface of the catalyst bed and the interior walls (7) of the reactor (1). This space is filled with a particulate material presenting less resistance to flow than the catalyst particles.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung einer wässrigen Methacrylamidlösung, wobei man Wasser durch ein Festbett leitet, das als Feststoff Methacrylamid umfasst. Weiterhin beschreibt die vorliegende Erfindung einen Feststoffbehälter und eine Anlage zur Durchführung des erfindungsgemäßen Verfahrens.
Abstract:
This invention relates to a method for the production of particulate carbon products in a reactor vessel wherein gas flow between a gas inlet port and a gas outlet port suspends a bed of catalyst-containing particulate material in said vessel and wherein the product is discharged from said vessel by falling from the bed.
Abstract:
A fuel reforming system includes an inlet device for a reactor having a housing defining a frustoconical interior region having an inlet opening and an outlet opening. A tube mixer having a helical divider may be optionally employed to transfer fluid into the inlet opening. A retention member is placed at each of the openings and a plurality of particles is contained within the frustoconical interior region between the retention members. An insulator placed between the outlet opening and the catalyst reaction surface minimizes temperature non-uniformities over the catalyst surface area, which preserves the catalyst contained within the reaction surface and prevents premature onset of the reaction prior to contact of a reactant mixture with the reaction surface. As a reactant fluid material passes through the inlet device it forms a homogenous reactant fluid material which then flows onto a catalytic reaction surface to form a reformate. Even distribution of the reactant fluid material onto the catalyst reaction surface provides uniform reactivity of the various components (e.g. fuel, air and exhaust gas mixture) comprising the reactant mixture, which helps reduce carbon build-up in the system and increases thermal efficiency.
Abstract:
This invention relates to a method for the production of particulate carbon products in a reactor vessel wherein gas flow between a gas inlet port and a gas outlet port suspends a bed of catalyst-containing particulate material in said vessel and wherein the product is discharged from said vessel by falling from the bed.
Abstract:
A fuel reforming system includes an inlet device for a reactor having a housing defining a frustoconical interior region having an inlet opening and an outlet opening. A tube mixer having a helical divider may be optionally employed to transfer fluid into the inlet opening. A retention member is placed at each of the openings and a plurality of particles is contained within the frustoconical interior region between the retention members. An insulator placed between the outlet opening and the catalyst reaction surface minimizes temperature non-uniformities over the catalyst surface area, which preserves the catalyst contained within the reaction surface and prevents premature onset of the reaction prior to contact of a reactant mixture with the reaction surface. As a reactant fluid material passes through the inlet device it forms a homogenous reactant fluid material which then flows onto a catalytic reaction surface to form a reformate. Even distribution of the reactant fluid material onto the catalyst reaction surface provides uniform reactivity of the various components (e.g. fuel, air and exhaust gas mixture) comprising the reactant mixture, which helps reduce carbon build-up in the system and increases thermal efficiency.
Abstract:
A method and a reaction vessel for producing gaseous ethylene oxide from partial oxidation of hydrocarbon using a heterogeneous catalyst fixed bed comprising: - introducing gaseous ethylene, oxygen, ballast gas, and catalyst promoter into a reaction vessel having a catalyst bed with a length such that an outflow area and an inflow area over said catalyst bed length in between the reactor outflow and inflow has an absolute ratio difference less than or equal to 1.3 m; said catalyst having a selectivity greater than 80%; - circulating a heat transfer fluid through at least one coolant heat exchanger in said shell interior; said heat exchanger having a coolant flow cross sectional area ratio to cooling surface area less than 1; - flowing said gaseous ethylene, oxygen, ballast gas and catalyst promoter over said catalyst and through an outlet zone in said reactor vessel, said zone configured with an average residence time of less than or equal to 4 seconds from the catalyst bed to the heat exchanger to quench said process to create gaseous ethylene oxide product.
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.
Abstract:
A plasma fuel reformer (12) reforms hydrocarbon fuels to produce a reformed gas which is supplied to the intake of an internal combustion engine, an emission abatement device, or a fuel cell. The plasma fuel reformer (12) includes a catalytic substrate (20) positioned in the reaction chamber of the plasma fuel reformer (12) to facilitate the reforming process of gas exiting the plasma-generating assembly of the reformer (12). A method of operating a plasma fuel reformer (12) is also disclosed.