Abstract: A hood comprising a flexible envelope and a reservoir of oxygen comprising a calibrated outlet orifice that leads into the internal volume of the envelope, the outlet orifice being closed off by a removable stopper, characterized in that the reservoir of pressurized oxygen comprises two independent storage compartments, a first compartment of which communicates with the outlet orifice and a second compartment of which is isolated from the outlet orifice via a sealed partition provided with a member for opening the partition, the opening member being switchable between a first configuration which prevents fluidic communication between the second compartment and the outlet orifice and a second configuration that allows fluidic communication between the second compartment and the outlet orifice, the opening member being sensitive to the pressure difference between the second compartment and the first compartment and being configured to automatically switch from the first to the second configuration when the pres

Abstract: There is proposed a method for starting up a pre-reforming stage in an integrated reforming plant in which a hydrocarbonaceous feed stream, in particular natural gas, is converted into a reformation product containing carbon oxides, hydrogen and hydrocarbons. Before carrying out the start-up method, the catalyst contained in the pre-reforming stage is in an oxidized or passivated state. For its activation, the pre-reforming catalyst is charged with a methanol/steam mixture, from which by steam reformation of methanol in situ the hydrogen required for the activation of the catalyst is produced. Excess hydrogen is used for the hydrogen supply of the desulfurization stage arranged upstream of the pre-reforming stage.

Abstract: For producing a synthesis gas containing hydrogen and carbon monoxide from a starting gas containing hydrocarbons, the starting gas is split up into a first partial stream and a second partial stream, wherein the first partial stream is supplied to a steam reformer in which it is catalytically converted together with steam to obtain a gas stream containing hydrogen and carbon oxides, wherein after the steam reformation the first partial stream is again combined with the second partial stream, and wherein the combined gas stream is supplied to an autothermal reformer in which the combined gas stream together with an oxygen-containing gas is autothermally reformed to a synthesis gas. The first partial stream is guided directly into the steam reformer and the second partial stream is guided through a pre-reformer before passing through the autothermal reformer.

Abstract: Process for treating a catalytic reactor comprising a catalyst bed that includes the successive steps of passivating the catalytic reactor leading to the production of an oxidation layer at the surface of the active sites of the catalyst bed, opening the reactor, and skimming at least one portion of the catalyst bed.

Abstract: In a method for separating at least one lighter impurity of a gaseous mixture containing at least 30% mol of carbon dioxide, a liquid (101) enriched with carbon dioxide is drawn off into a vat of a distillation column (25), at least part (27) of the liquid enriched with carbon dioxide is vapourised and then heated to a first temperature higher than the boiling temperature thereof in the exchanger and leaves the exchanger at the hot end thereof, and at least part of the vapourised and heated liquid is sent from the hot end of the exchanger at the first temperature, without being cooled in the exchanger and without having been compressed, to the lower part of the distillation column, where it participates in the distillation while enriching itself.

Abstract: A device for separating a gas mixture containing at least 35 mol % carbon dioxide and also at least one gas lighter than carbon dioxide, comprising a first phase separator configured to receive a first partially condensed flow from an exchange line; a first phase separator configured to separate the gas phase from the liquid phase; a cooling means configured to receive the gas phase from the first phase separator and cool said gas phase to form a second partially condensed flow. The resulting liquid phase is then sent to a first valve and is expanded to a lower pressure that is at most 300 mbar lower in order to form a first expanded liquid, which is then mixed with a second liquid originating from the second phase separator in a mixing means that is located upstream of a third valve.

Abstract: The invention relates to a residual pressure valve device comprising a shut-off member (1) that is able to move in the body (9) relative to a seat (2), a return member (5) that urges the shut-off member (1) by default towards the seat (2), the shut-off member (1) comprising an internal duct (6) having a first end in communication with the gas inlet (3) and a second end that leads, via a calibrated orifice (8), into a control chamber (7) that is closed by the shut-off member (1) such that, when the gas pressure in the control chamber (7) reaches a predetermined threshold, this pressure causes the shut-off member (1) to move away from the seat (2), the body of the shut-off member (1) comprising a first portion (11) that forms a male element which is able to move in translation in a female passage of the body (9) with a predetermined fit forming a restriction ensuring partial and progressive opening of the passage for the gas between the inlet (3) and the outlet (4).

Abstract: A first gas present at low concentration in a source gas is recovered from the source gas at a relatively high recovery using first and second gas separation membrane stages. The second stage permeate gas is divided into first and second portions. The first portion is a first product gas a majority of which is the first gas. The second portion and the permeate gas from the first stage are both fed to the compressor and then to the second stage gas separation membrane. The second stage non-permeate gas is combined with the source gas and fed to the first gas separation membrane stage. The first gas separation membrane separates that combined gas into the permeate (which is combined with the second portion as explained above) and a non-permeate. The first stage non-permeate is the second product gas mainly comprised of the second gas. The invention is particularly applicable to natural gas containing Helium.

Abstract: An apparatus for producing liquid nitrogen is provided. The apparatus includes a heat exchanger, a pair of turbine-boosters, a warm compressor, an air separation unit having a single column, a top condenser and a bottom reboiler, a liquid/gas separator, and an optional subcooler. The apparatus is configured to produce merchant or non-merchant grade liquid nitrogen using the pair of turbine-boosters to provide refrigeration and energy for the process.

Abstract: In a method for cooling a flow containing at least 35% carbon dioxide and at least 0.2 ?g/Nm3 of mercury, the mercury being in liquid and/or gas form, the flow is cooled in a first brazed aluminum plate-fin heat exchanger from a first temperature to a second temperature higher than ?38.6° C. to form a cold flow at the second temperature, and the flow cooled to the second temperature is cooled in a second heat exchanger, which is a tube and shell heat exchanger, to a third temperature lower than ?38.6° C.

Abstract: A method for decreasing steam methane reformer (SMR) tube temperature is provided. The method can include the steps of introducing a hydrocarbon containing feed to be reformed to a plurality of SMR tubes in the presence of steam under conditions effective to produce hydrogen and carbon monoxide, monitoring the temperature of at least a plurality of the tubes within the SMR during operation, comparing the monitored temperature against a first predetermined value, and introducing an effective amount of water to a reformer tube when the monitored temperature of the reformer tube is at or above the predetermined value, such that the temperature of the reformer tube is reduced.

Abstract: A Temperature Swing Adsorption method for separating a first component, comprising a more adsorbable component, from a feed stream comprising more than 50 mol % of a second component, comprising a less adsorbable component, is provided. The method includes providing an adsorbent structure suitable for adsorbing the first component, the structure being of the parallel passage contactor type, and cyclically implementing the following steps. Passing the feed stream through the adsorbent structure thus adsorbing the first component and producing a stream depleted in the first component and enriched in the second component. Heating the adsorbent structure to desorb the adsorbed first component by means of circulating a heating stream enriched in the first component at a temperature suitable for regeneration. And cooling the structure by means of passing through it more than 50% of the stream enriched in the second component produced in the step a).

Abstract: A method of forming a structured adsorbent sheet is provided. The method includes, combining a nano-adsorbent powder and a binder material to form an adsorbent material, and sandwiching a porous electrical heating substrate between two layers of adsorbent material. The nano-adsorbent powder may be a nano-particle adsorbent. The nano-adsorbent powder may be selected from the group consisting of crystal zeolite, activated carbon, activated alumina, silica gel, and metal organic framework (MOF).

Abstract: A process for producing short-chain olefins by conversion of oxygenates in a multi-stage fixed-bed reactor, in which the individual stages for reaction zones are covered with beds of a granular, form-selective zeolite catalyst and the feed mixture containing oxygenates is added distributed over the reaction stages. An increase of the availability of the fixed-bed reactor for the olefin production with the same or an increased yield of short-chain olefins is achieved in that one or more reaction zones are charged with a distinctly reduced mass flow of the feed mixture containing oxygenates, wherein the reduced mass flow fraction is distributed over other reaction zones.

Abstract: The disclosure describes a valve integrated pressure regulator in the form of a cylinder head. The device is intended for medical or emergency purposes and that is used to convert a medical or emergency gas pressure from a high, variable pressure to a lower, more constant working pressure. Two of the main features of the cylinder head design are special ignition event vent hole dimensions and configurations and a pressure regulated reversibly engaging-disengaging safety valve connected to these vent holes.

Abstract: A system for moving heavy objects about a manufacturing yard is provided. In one embodiment, the system can include a pair of rails disposed on the ground of the manufacturing yard; a plurality of multi-ton rollers configured to mate with the rails, each multi-ton roller configured to be attached to a movable platform which is configured to accept a packed column section; and a winch disposed between the pair of rails and secured to the ground of the manufacturing yard, the winch having a spool of cable with one end configured to be attached to the movable platform, the winch configured to apply a force to cause the movable platform to travel about a length of the pair of rails.

Abstract: A hanging platform assembly for use in accessing a column section is provided. The hanging platform assembly can include a walkway configured to allow a user to walk about the hanging platform; a backing extending vertically from the walkway at a point distal from the stacked column; an angled post extending at an angle down and away from the walkway; a foot pad disposed on the end of the angle post, the foot pad configured to rest against the outer surface of the stacked column; a vertical post connected the walkway and the angled post; and an adapter disposed on the walkway at a point proximal the outer surface of the stacked column, wherein the adapter is configured to mate with a clip attached to the column section, such that when a downward force is applied to the walkway, the clip is configured to prevent the walkway from falling to the ground.

Abstract: A method for moving a packed column section about a remote manufacturing yard is provided. In one embodiment, the packed column section can include a first course, a second course, packing disposed within the first course and second course, and a plurality of distributors. The method can include the steps of placing the packed column section on top of a movable platform, the movable platform configured to support and distribute the weight of the packed column section; and moving the packed column section from a first point to a second point, the second point being in an open area adapted for stacking a plurality of packed column sections on top of each other to form a column.

Abstract: A method of installing a vaporizer in a remote manufacturing yard is provided. The method can include the steps of obtaining a lower stage and an upper stage of a vaporizer; obtaining a first column section and a second column section; installing the lower stage to a bottom head such that the lower stage is in fluid communication with an inner volume of the bottom head; installing the first column section over and around the lower stage and fitting and welding a bottom of the first column section to the bottom head; installing the upper stage; and installing the second column section and fitting and welding a bottom of the second course to the first course.

Abstract: A trolley for supporting the plate during vertical rolling of the plate is provided. In one embodiment, the trolley can include a support body configured to provide support for the trolley; a plurality of wheels configured to allow the trolley to move across a floor; a lifting arm supported by the support body, wherein the lifting arm is movable about a first position and a second position; a pump handle configured to raise the lifting arm between the first position and the second position; and a plate holder configured to move with the lifting arm and hold the plate in place relative to the trolley.