Abstract: The method for producing liquid hydrogen can include the steps of: introducing pressurized natural gas from a high pressure natural gas pipeline to a gas processing unit under conditions effective for producing a purified hydrogen stream; and introducing the purified hydrogen stream to a hydrogen liquefaction unit under conditions effective to produce a liquid hydrogen stream, wherein the hydrogen liquefaction unit provides a warm temperature cooling and a cold temperature cooling to the purified hydrogen stream, wherein the warm temperature cooling is provided by utilizing letdown energy of a pressurized stream selected from the group consisting of a nitrogen stream sourced from a nitrogen pipeline, a natural gas stream sourced from the high pressure natural gas pipeline, an air gas sourced from an air separation unit, and combinations thereof, wherein the cold temperature is provided by utilizing letdown energy of the purified hydrogen stream.

Abstract: A station for filling pressurized gas tanks comprising a filling circuit having an upstream end connected to at least one source of gas and a downstream end, the filling circuit comprising a unit for compressing gas coming from the source, the filling station comprising a device for cooling the compressed gas comprising a heat exchanger situated in the filling circuit configured to provide heat exchange between the pressurized gas and a cooling fluid, the cooling device comprising a reserve of cryogenic liquid constituting the cooling fluid and a cooling circuit connecting the reserve of cryogenic liquid to the heat exchanger in order to transfer heat from the pressurized gas to the cryogenic liquid, the cooling circuit further comprising a gas sampling line connecting a volume containing the vaporized gas from the reserve to the heat exchanger.

Abstract: Device and method for the cryogenic purification of a stream of gas, comprising a purification circuit comprising a first inlet and a first set of filters arranged in series, the first set of filters comprising a terminal heat exchanger in a heat-exchange relationship with a cold source, the purification circuit comprising, downstream of the terminal exchanger, a first outlet, the device comprising at least one drive member intended to set the stream of gas in motion in the circuit, the purification circuit further comprising, between the terminal exchanger and the first outlet, a second set of filter(s), and the at least one drive member being configured to set two successive volumes of gas for purification in motion in opposite directions of circulation in the circuit. The invention also relates to a machine including such a device.

Abstract: An in situ retrofit assembly for a top entry valve includes an annular conduit (100) configured to conform with a seat support (106) at the distal end (207) and a valve body extension (208) with an interior annular region (301). The valve body extension (208) comprises an inlet port (209) fluidically connected to the annular area (301). A gland packing push plate (211) is configured to allow the annular conduit (100) to pass through thereby forming an outlet port (212). This allows the removal of a portion of the fluid from the cold box for downstream processing or manipulation as desired.

Abstract: A method for the production of liquefied natural gas (LNG) using a cold fluid provided from a cryogenic unit, such as an air separation unit or nitrogen liquefier, is provided. The method may include the steps of: withdrawing a nitrogen stream from a cryogenic unit, wherein the nitrogen stream is at a temperature between about ?155° C. to about ?193° C.; and liquefying a natural gas stream in a natural gas liquefaction unit using the nitrogen stream from the cryogenic unit.

Abstract: An exhaust system for a steam reformer comprises at least one longitudinal collecting tube, wherein along the longitudinal axis of the longitudinal collecting tube ports for connection to catalyst tubes are provided, which in the connected condition are aligned parallel to each other and vertically to the longitudinal collecting tube, a transverse collector which is connected to the at least one longitudinal collecting tube and has a longitudinal axis which extends vertically to the at least one longitudinal collecting tube and vertically to the catalyst tubes, wherein the longitudinal collecting tube is formed as hot exhaust system and the transverse collector is formed as cold exhaust system. The transverse collector is arranged on a side of the longitudinal collecting tube facing away from the ports centrally to the longitudinal collecting tube.

Abstract: A device including a tank of pressurized fluid provided with an orifice in which a first valve is fixed that includes a body of elongate overall shape extending along a longitudinal axis (A) between a first end connected to the tank and a second connection end, the device including a protective bonnet for protecting the first valve and delimiting a protective chamber around the first valve, the protective chamber being provided with an access opening the device including a fluid transfer member that forms a separate physical entity from the first valve and from the tank, the transfer member and the first valve including respective coupling members that form a quick-connection system for removably connecting the transfer member to the second end of the valve.

Abstract: The invention relates to a gas scrubbing process for purifying crude synthesis gas with methanol as a physical absorption medium, wherein an acid gas comprising at least hydrogen sulfide (H2S) is produced. The acid gas is produced in a hot regenerator arranged downstream of an absorption apparatus and subsequently separated from gaseous methanol in an acid gas separator by cooling and condensation. The acid gas separator has a condensation region and an absorption region, wherein both regions are separated from one another by a gas-permeable tray. This has the result that impurities such as hydrogen cyanide and/or ammonia outgassing from a first acid gas substream are not reabsorbed in the condensation region of the acid gas separator, thus avoiding an accumulation of impurities in the hot regenerator or other parts of the gas scrubbing plant. The invention further relates to an acid gas separator and to the use of the acid gas separator according to the invention in a process according to the invention.

Abstract: A chamber for a distillation column that is to operate at a temperature below 0° C., comprises at least four walls, which in use are vertical, and a roof, the chamber being designed to contain at least one distillation column, at least one other element that is to operate at a cryogenic temperature, and insulation, at least one wall being convex.

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.

Abstract: A process comprises a first set of distillation columns and a second set of distillation columns, a low-pressure column of the first set being connected to a column operating at higher pressure of the second set by means of a gas arriving from the top of the column operating at a higher pressure and/or by means of a fluid arriving from the low-pressure column.

Abstract: A method for etching silicon-containing films is disclosed. The method includes the steps of introducing a vapor of an iodine-containing etching compound into a reaction chamber containing a silicon-containing film on a substrate, wherein the iodine-containing etching compound has the formula CaHxFyIz, wherein a=1-3, x=0-6, y=1-7, z=1-2, x+y+z=4 when a=1, x+y+z=4 or 6 when a=2, and x+y+z=6 or 8 when a=3; introducing an inert gas into the reaction chamber; and activating a plasma to produce an activated iodine-containing etching compound capable of etching the silicon-containing film from the substrate.

Abstract: Device and method for filling pressurized gas tanks, particularly vehicle pressurized hydrogen tanks, the device comprising a liquefied gas source, a transfer circuit comprising two parallel transfer lines each having an upstream end linked to the liquefied gas source, at least two separate downstream ends intended to be each removably connected to a tank to be filled, each of the two transfer lines comprising: a pump, a vaporizer for evaporating the pumped fluid, a branch for bypassing the vaporizer and a distribution valve(s) set configured to control the flow of fluid pumped and distributed between the vaporizer and the branch line, the device further comprising a storage buffer(s), which storage buffer(s) is(are) connected in parallel to each of the two transfer lines via a set of valves.

Abstract: An installation for cryogenic cooling or freezing of products includes: a cryogenic tunnel through which products that are to be cooled or frozen circulate, between an entrance into the tunnel and an exit from the tunnel on a conveyor belt; an upstream extraction hood situated facing the entrance to the tunnel and/or a downstream extraction hood situated facing the exit from the tunnel; and movable blinds or shutters that make it possible to close all or part of a suction cross section of at least one of the said hoods over a width and depth of the conveyor belt.

Abstract: Process for producing biomethane from a biogas stream including methane, carbon dioxide and at least one impurity chosen from ammonia, volatile organic compounds, water, sulfur-based impurities (H2S) and siloxanes. A biogas stream is dried, the at least one impurity is at least partially removed by solidification and removal of the impurity. The methane and the carbon dioxide contained in the biogas obtained from the second step are separated so as to produce a biomethane stream and a CO2 stream.

Abstract: The disclosure deals with a slurry bubble column reactor for converting a gas mixture comprising carbon monoxide and hydrogen into liquid hydrocarbons. The slurry bubble column reactor features a slurry bed of catalyst particles, an inlet conduit for feeding the gas mixture into the slurry bed, a filtration zone for separating the liquid hydrocarbons from the catalyst particles and a liquid outlet conduit for withdrawing the separated hydrocarbons from the filtration zone. The filtration zone is situated in the slurry bubble column reactor such that the slurry bed is found in a first and a second heat exchange zone with the filtration zone arranged between the first and the second heat exchange zone.

Abstract: A method for filling tanks with pressurized gas via a filling station comprising several storage containers and a fluid circuit for transferring the gas from the containers to the tanks, the circuit comprising a first end to which the containers are linked in parallel and a second end provided with a transfer line intended to be connected to the tank(s) to be filled, the circuit comprising, arranged in series between the first end and the second end, a first isolation valve, a flow or pressure regulation member, and a second isolation valve, the method comprising filling a first tank, characterized in that, on completion of the filling of the first tank and before filling a second tank, the first and second isolation valves are closed to trap a supply of pressurized gas in the circuit between said two valves and in that the supply of gas is used to refill at least one of the containers.

Abstract: A burner for producing synthesis gas by partial oxidation of liquid or gaseous, carbon-containing fuels in the presence of an oxygen-containing oxidant and a moderator, which burner can be operated uncooled, i.e. without a fluid coolant being passed through the burner, is proposed. Steam or carbon dioxide or else mixtures of these materials are used as moderator. This is achieved by the feed channels being configured so that mixing of the fuel, the moderator and the oxidant occurs only outside the burner.

Abstract: The invention relates to a process and a plant for removal of acidic gas constituents from synthesis gas by absorption in a physical scrubbing medium. A first scrubbing medium laden with at least carbon dioxide (CO2) is supplied to a decompression vessel for depressurization from a first absorption apparatus via a first feed conduit. Furthermore, a second scrubbing medium laden with at least carbon dioxide (CO2) is supplied to the decompression vessel for depressurization from a second absorption apparatus via a second feed conduit. The carbon dioxide concentration in the first laden scrubbing medium is higher than the carbon dioxide concentration in the second laden scrubbing medium.

Abstract: Titanium-containing film forming compositions comprising titanium halide-containing precursors are disclosed. Also disclosed are methods of synthesizing and using the disclosed precursors to deposit Titanium-containing films on one or more substrates via vapor deposition processes.