Abstract: A process and an apparatus involving a reaction zone loaded with particles for the prolonged continued time of operation time on a dust containing feed stream by arrangement of the particles in a plurality of beds, and in a number of operation time bypassing with main part of the feed stream a number of the particle beds.
Abstract: Process for the dehydrogenation of a hydrocarbon feed comprising a step of dehydrogenating the hydrocarbon feed and a step of removing hydrogen being formed by dehydrogenation reactions, wherein the dehydrogenation and hydrogen removal steps are performed simultaneously in presence of a dehydrogenation catalyst being combined with a metal compound being reduced in presence of hydrogen.
Type:
Grant
Filed:
March 28, 2000
Date of Patent:
December 4, 2001
Assignee:
Haldor Topsoe A/S
Inventors:
Anni Stahl, Niels Jørgen Blom, Jens Perregaard, Poul Erik Højlund Nielsen
Abstract: Process for the combustion of hydrocarbon fuel in a burner being exposed to corrosive atmosphere, wherein outer surface of the burner being protected by passing a non-corrosive atmosphere along the outer burner surface.
Type:
Grant
Filed:
September 10, 1999
Date of Patent:
November 27, 2001
Assignee:
Haldor Topsoe A/S
Inventors:
Thomas Sandahl Christensen, Ivar Ivarsen Primdahl, Olav Holm-Christensen, Peter Seier Christensen
Abstract: A method for generating a solution containing rhodium at a concentration of at least 0.01 M and preferably at least 0.20 M, comprising treating solid rhodium iodide or other solid source of rhodium with a reducing agent selected from a source of hydrazine, hydrazine hydrate, hydrazinium salts, organic derivatives of hydrazine, hypophosphorous acid and salts of hypophosphorous acid.
Abstract: Method of manufacturing catalyzed hardware including adhering a porous structure on the hardware, applying to and/or within the porous structure a ceramic carrier material and applying catalytic active material to the ceramic carrier material.
Type:
Grant
Filed:
November 10, 1999
Date of Patent:
November 20, 2001
Assignee:
Haldor Topsoe A/S
Inventors:
Peter Seier Christensen, Tommy Hansen, Viggo Lucassen Hansen, Lars Ejby Andersen
Abstract: Process and reactor for the preparation of ammonia at elevated pressure and temperature in an ammonia reactor, wherein a process stream of ammonia synthesis gas is successively passed through at least three catalyst beds with intermediate cooling of partially reacted synthesis gas leaving the catalyst beds by heat exchange in heat exchangers arranged between each catalyst bed. The process stream is obtained by combining prior to introduction into a first catalyst bed, a first feed stream of synthesis gas having been preheated through indirect heat exchange during the intermediate cooling of the partially converted synthesis gas and a second feed stream of synthesis gas for adjustment of temperature of the process stream. The first feed stream is passed successively through the interbed heat exchangers for cooling the partially converted synthesis gas and space velocity of the synthesis gas is adjusted to be substantially in the same range in all catalyst beds.
Abstract: A process for reducing content of sulphur compounds and polyaromatic hydrocarbons in a hydrocarbon feed having a boiling range between 200° C. and 600° C., which process comprises in combination contacting the feed and hydrogen over a hydrotreating catalyst and hydrotreating feed at hydrotreating conditions, cooling the hydrotreated effluent and hydrogen-rich gas from the hydrotreating reactor contacting said effluent and hydrogen gas over a hydrotreating catalyst in a post-pretreatment reactor at a temperature sufficient to lower the polyaromatic hydrocarbon content.
Abstract: Solid oxide fuel cell with a planar support in form of a porous plate structure supporting on one planar surface a layer of electrode active material and with internally elongated gas supply channels formed inside the structure.
Abstract: Mixing device for mixing of a first and second gas stream comprising within a housing at least one deflection body causing the gas streams to be radially deflected within the housing; and
a nozzle device for introduction of the second gas stream, arranged rotational symmetric to axis of the housing.
Abstract: Ceramic laminate material comprising at least one dense layer of a perovskite material and at least one layer of a dense non-perovskite material and/or at least one layer of a dense superstructural perovskite material.
Abstract: A method of preparing a rare earth-barium-cuprate superconductor in the form of metallic tapes or wires, using a thick film or powder-in-tube process by supporting on a metallic substrate a mixture of seed crystals or aligned platelets of rare earth-barium cuprate having a high melting point and rare earth-barium-cuprate powder having a lower melting point. The material supported on the substrate is then subjected to a heat treatment at a temperature below the melting point of the high melting rare earth-barium-cuprate seed crystals and the metallic substrate and above the melting point of the low melting powder. Subsequently, the heat treated supported material is cooled below the melting temperature of the material and annealed.
Abstract: A method for the preparation of small zeotype crystals with controlled sizes comprising the steps of synthesizing inside a porous material having a majority of pores less than 1000 Å a synthesis gel consisting essentially of
(a) a zeotype precursor composition comprising hydratized oxides of Si, Al and P and metal compounds
(b) a zeolite template; and
heating or autoclaving the porous support material containing synthesis gel, whereby zeotype crystals are formed; and
rinsing and drying the porous support material containing zeotype crystals.
Type:
Grant
Filed:
November 10, 1999
Date of Patent:
June 5, 2001
Assignee:
Haldor Topsoe A/S
Inventors:
Haldor F. A. Topsøe, Claus J. H. Jacobsen, Michael Brorson, Claus Madsen, Iver Schmidt
Abstract: A catalyst for ring opening of cyclic organic compounds comprising, on a carrier of alumina, silica, zirconia and mixtures thereof, from 0.1 to 10% by weight based on the total weight of the catalyst of a catalytic active metal selected from platinum, palladium, rhodium, rhenium, iridium, ruthenium, nickel, cobalt and mixtures or combinations thereof and from 0.01 to 20% by weight based on the total weight of the catalyst of a metal modifier selected from tungsten, molybdenum lanthanum and rare earth metals and mixtures and combinations thereof.
Abstract: A process for the production of hydrogen rich gas by soot free autothermal steam reforming of a hydrogen process gas, wherein the hydrogen rich gas being withdrawn from the autothermal steam reforming process at elevated pressure is depressurized in a gas turbine for generation of valuable power.
Abstract: Process for the preparation of ammonia from ammonia synthesis gas by contacting the synthesis gas with a bimetallic catalyst comprising a Group VIII metal combined with a Group VIB metal at conditions being effective in the formation of ammonia, wherein the bimetallic catalyst is in its nitride form during contact with the synthesis gas.
Type:
Grant
Filed:
March 13, 2000
Date of Patent:
May 22, 2001
Assignee:
Haldor Topsoe A/S
Inventors:
Claus J. H. Jacobsen, Michael Brorson, Jens Sehested, Herman Teunissen, Eric O. Törnqvist
Abstract: Process for the preparation of hydrogen and/or carbon monoxide rich gas by catalytic steam reforming of a hydrocarbon feedstock, wherein a first stream of the feedstock is autothermally steam reformed in parallel with a second stream of the feedstock being steam reformed in presense of a steam reforming catalyst in heat conducting relationship with hot effluent from the autothermal steam reforming and with steam reformed hot effluent withdrawn from steam reforming catalyst, and the effluent from the autothermal steam reforming step and the heat exchange steam reforming step are combined after having supplied heat to steam reforming reactions proceeding in the second stream of the feedstock.
Abstract: A process for the combined production of synthesis gas and power, comprising the steps of primary and secondary steam reforming of a hydrocarbon feedstock, wherein part of the synthesis gas being withdrawn from the secondary steam reforming at high pressure is expanded in a gas turbine for the production of power and the expanded synthesis gas is utilized as fuel in the primary steam reforming step.
Abstract: Process for the alkylation of paraffinic and/or aromatic hydrocarbon feedstock with an olefinic alkylating agent by contact with a perfluorinated alkyl sulphonic acid movably adsorbed within a confined area of a fixed bed of particle contact material, wherein the fixed bed of particle contact material is subdivided in a number of elongated channels.