Abstract: The present invention relates to a process and apparatus for improving the combustion of a secondary fuel supplied in a first stream in a rotary kiln, wherein the rotary kiln has a burner assembly comprising a main burner and a plurality of feed channels for various media, of which one is designed for the supply of a secondary fuel, in particular in the form of particles or shreds in a stream of compressed air. According to the invention, a tubular oxygen lance for an oxygen-rich gas, in particular, technical grade gaseous oxygen, or an oxygen-rich liquid, in particular, technical grade liquid oxygen, with an angled nozzle at its end, is arranged in or on a feed channel of the burner assembly, whereby the oxygen lance is brought into such a position that the oxygen emerging from a nozzle forms a second stream that strikes a first stream of secondary fuel.

Abstract: Laser nozzle usable for laser cutting, especially with a fiber or disk laser, comprising: a nozzle body comprising an axial housing passing axially through the nozzle body and comprising a first output orifice located in the front side of the nozzle body; a movable element able to move in translation in the axial housing in the direction of the first output orifice under the effect of a gas pressure acting on the movable element; and an elastic element arranged in the axial housing, between the nozzle body and the movable element, the elastic element exercising an elastic return force on the movable element tending to oppose the translation movement in the axial housing in the direction of the first output orifice.

Abstract: Method of operating a blast furnace installation comprising a top gas recycle blast furnace and hot stones, whereby a hydrocarbon containing fuel is transformed into a transformed gas stream consisting mainly of CO and H2 and substantially devoid of hydrocarbon, whereby a low-heating-value gaseous fuel is generated comprising a mixture of the transformed gas with a portion of the CO2-rich tail gas obtained by decarbonatation of the blast furnace gas, and whereby the low-heating-value fuel is used to heat the hot furnace gas is heated before being injected into the blast-furnace.

Abstract: A plant for the membrane permeation treatment of a gaseous feedstream comprised of at least methane and carbon dioxide for producing a methane-enriched gaseous stream, comprises: a first membrane separation unit able to receive the gaseous feedstream and to produce a first carbon dioxide-enriched permeate and a first methane-enriched retentate, a second membrane separation unit able to receive the first retentate and to produce a second carbon dioxide-enriched permeate and a second methane-enriched retentate, a gas-gas ejector able to increase the pressure of the first permeate to a pressure of between 2 and 6 bar, more preferably between 3 and 4 bar, and a third membrane separation unit able to receive the first permeate compressed in the ejector and to produce a third methane-enriched retentate and a third CO2-enriched permeate.

Abstract: Method and installation for refrigerating the same application by means of several refrigerators/liquefiers disposed in parallel, the refrigerators/liquefiers in parallel using a working gas of the same nature having a low molar mass, that is to say having a mean total molar mass of less than 10 g/mol such as pure gaseous helium, each refrigerator/liquefier comprising a station for compressing the working gas, a cold box intended to cool the working gas at the output from the compression station, the working gas cooled by each of the respective cold boxes of the refrigerators/liquefiers being put in thermal exchange with the application with a view to supplying cold to the latter, in which a single compression station compresses the working gas for each of the respective separate cold boxes of the refrigerators/liquefiers disposed in parallel, the single compression station comprising only compression machines of the lubricated-screw type and systems for removing oil from the working fluid output from the com

Abstract: The present invention relates to a method for producing and delivering a gas mixture having a selected composition of a first gas and at least one second gas, comprising the following steps: (a) providing a main gas flow comprising the first gas in a main conduit, (b) separating the main gas flow into a first plurality of secondary gas flows, (c) guiding each secondary gas flow through a secondary conduit, (d) adding at least one second gas to at least one of the first plurality of secondary gas flows in the respective secondary conduit through a delivering conduit, said delivering conduit protruding into the secondary conduit, and (e) combining the first plurality of secondary gas flows to the gas mixture. With the technical teaching of the present invention a dynamic gas bottle filling is possible wherein the second gas components may have a concentration form some ppb to percent.

Abstract: Process for depositing a corrosion-protection coating on at least one portion of the surfaces of a metallic substrate having at least one cavity with an equivalent diameter emm<2 mm and a length/width ratio of greater than 150, using an aqueous suspension comprising powder of the metal to be deposited on the substrate combined with an agent for protecting the surface of the metal powder, a diluent, and at least one additive, the particles of the suspension each having an equivalent diameter d such that d?emm/10.

Abstract: Blast furnace installation having top gas recycling and process for operating same, in which the oxygen concentration of the oxidizing gas injected into the blast furnace is regulated as a function of the flow rate of the recycled top gas.

Abstract: Methods of using Si-containing film forming compositions to deposit silicon-containing films using vapor deposition processes are disclosed. The disclosed Si-containing film forming composition comprises an amino(bromo)silane precursor having the formula: SiHxBry(NR1R2)4?x?y wherein x=0, 1 or 2; y=1, 2 or 3; x+y<4; each R1 and R2 is independently selected from C1-C6 alkyl, aryl, or hetero group; and R1 and R2 may be joined to form a cyclic nitrogen-containing heterocycle. The disclosed Si-containing film forming compositions include an amino(bromo)silane precursor selected from the group consisting of SiH2Br(NEt2), SiH2Br(N(iPr)2), SiH2Br(N(iBu)2) and SiBr(NMe2)3.

Abstract: A pneumatic oxygen conserver delivering a constant minute flow volume rate to a nasal mask, face mask, or nasal cannula is rendered lightweight by using tubing connected between the conserver and an oxygen source as a reservoir of oxygen for delivery to the nasal mask, face mask, or nasal cannula.

Abstract: A gas distribution installation including a housing designed to receive at least one gas cylinder and having a gas input opening and a gas output opening; a system of gas ducts arranged in the housing to which the at least one gas cylinder is connected; a gas distribution system linked to the output opening allowing an equipment item to be supplied, and at least one communication port and a programmable logic controller, the logic controller being provided with a processor capable of processing data originating at least partly from a portable data storage and processing system distinct from the installation and wherein the data originating at least partly from a portable data storage and processing system distinct from the installation are used to manage control and/or maintenance parameters of the gas distribution system.

Abstract: An improved hydrogen generation system and method for using the same are provided. The system includes an HDS unit configured to remove sulfur from a process gas and a fuel gas, a pre-reformer configured to convert heavy hydrocarbons in the process gas and the fuel gas to methane, a first heat exchanger configured to dry the pre-reformed fuel gas, a second heat exchanger configured to heat the dry pre-reformed fuel gas, and a reformer configured to produce a syngas and flue gas.

Abstract: The present invention relates to a plant and a process for producing propylene at least one oxygenate, comprising a reactor for converting the reactant mixture into a product mixture which comprises propylene and also aliphatic and aromatic C5+ hydrocarbons, at least one distillation column for removing a C5+ stream, the C5+ stream comprising at least 90 wt % of the aliphatic and aromatic C5+ hydrocarbons of the product mixture, an extractive distillation column for separating the C5+ stream into an aromatics stream and an aliphatics stream, the aliphatics stream comprising at least 90 wt % of the aliphatics of the C5+ stream, and the aromatics stream comprising at least 90 wt % of the aromatics of the C5+ stream, and an aliphatics recycle line for at least partial recycling of the aliphatics stream to the reactor. According to the invention, an aromatics recycle line is provided which returns the aromatics stream at least partially as extractant into the extractive distillation column.

Abstract: An apparatus and a method for cooling and compressing a fluid to produce a low-temperature compressed fluid that can efficiently use the cold of LNG and reduce the energy needed, the apparatus using a Rankine cycle system having a first compression device, a first heat exchanger, an expansion device, a second heat exchanger, and a first flow passageway for guiding the heat transfer medium from the second heat exchanger to the first compression device; and at least one second compression device that is coupled to the expansion device, wherein at the second heat exchanger, a low-temperature LNG and the heat transfer medium undergo heat transfer, wherein at the first heat exchanger, a fed material gas and the heat transfer medium undergo heat transfer to produce a low-temperature fluid from the material gas, and the low-temperature fluid is compressed at the second compression device to produce a low-temperature compressed fluid.

Abstract: This invention relates to a process for the purification of acrylic acid from a mixture containing acrylic acid and acetic acid, comprising the following steps: extraction of the mixture containing acrylic acid and acetic acid with an extractant stream, whereby a raffinate stream and an extract stream are obtained, distillation of the extract stream, whereby an acrylic acid stream and a return stream are obtained, wherein the return stream contains acetic acid and is recirculated into the extraction. Furthermore, the invention may include a plant for carrying out this process.

Abstract: Disclosed are Niobium Nitride film forming compositions, methods of synthesizing the same, and methods of forming Niobium Nitride films on one or more substrates via vapor deposition processes using the Niobium Nitride film forming precursors.

Abstract: A gas separation membrane module includes a seal between a higher pressure gas and a lower pressure gas. The seal includes a compressible sealing member in between sealing surfaces. At least one of the sealing surfaces has corrosion-resistant cladding provided over either low alloy steel or high alloy steel. The cladding reduce the possibility of a seal failure due to corrosion of low alloy or high alloy steel exposed to acid gases or condensed moisture containing acid gases dissolved therein while at the same not requiring that all surfaces of the membrane module exposed to acid gases be provided with cladding.

Abstract: A method for the production of low pressure gaseous oxygen includes providing a system of distillation columns and a heat exchanger, wherein the system of columns comprises a lower pressure column, a higher pressure column, an auxiliary column, the auxiliary column having a distillation section, a first reboiler, and a second reboiler, wherein the LP column and the HP column are thermally integrated via a top reboiler/condenser disposed on top of the HP column. A cooled air stream is rectified within the system of columns such that the auxiliary column produces a cold oxygen fluid that is then warmed in the heat exchanger to produce a low pressure oxygen product. The cooled air stream provides reboiling duty for the first reboiler prior to rectification within the system of columns, and a compressed nitrogen stream received from a cold end of the heat exchanger provides reboiling duty for the second reboiler.

Abstract: Lanthanide-containing film forming compositions comprising Lanthanide precursors having the general formulae: wherein Ln is a Lanthanide; A is independently N, Si, B, P or O; each E is independently C, Si, B or P; m and n are independently 0, 1 or 2; m+n>1; each R is independently an H or a C1-C4 hydrocarbyl group; L is a ?1 anionic ligand selected from the group consisting of NR?2, OR?, Cp, amidinate, ?-diketonate, or keto-iminate, wherein R? is an H or a C1-C4 hydrocarbon group; and L? is NR? or O, wherein R? is an H or a C1-C4 hydrocarbon group. Also disclosed are methods of synthesizing and using the disclosed precursors to deposit Lanthanide-containing films on one or more substrates via vapor deposition processes.

Abstract: In a method for reheating an atmospheric vaporizer, a cryogenic liquid is vaporized by heat exchange with ambient air in the atmospheric vaporizer and to reheat the vaporizer, a gas is sent thereto at a temperature of at least 0° C., this gas originating from a cryogenic distillation air separation unit.