Reactor-exchanger comprising at least 3 stages with, on each stage, at least one area promoting the heat exchanges and at least one distribution area upstream and/or downstream of the area promoting the heat exchanges, characterized in that the area promoting the heat exchanges comprises cylindrical millimetric channels, there being 1 to 1000 of said channels with a length of between 10 mm and 500 mm.

A gas analysis system and method with a spectrometer, such as a Fourier transform infrared spectrometer, utilizing a reactor, such as a catalytic reactor, for providing reference spectra.

The present invention relates to high efficient tubular catalytic steam reforming reactor configured from about 0.2 inch to about 2 inch inside diameter high temperature metal alloy tube or pipe and loaded with a plurality of rolled catalyst inserts comprising metallic monoliths. The catalyst insert substrate is formed from a single metal foil without a central supporting structure in the form of a spiral monolith. The single metal foil is treated to have 3-dimensional surface features that provide mechanical support and establish open gas channels between each of the rolled layers. This unique geometry accelerates gas mixing and heat transfer and provides a high catalytic active surface area. The small diameter, high aspect ratio tubular catalytic steam reforming reactors loaded with rolled catalyst inserts can be arranged in a multi-pass non-vertical parallel configuration thermally coupled with a heat source to carry out steam reforming of hydrocarbon-containing feeds. The rolled catalyst inserts are self-supported on the reactor wall and enable efficient heat transfer from the reactor wall to the reactor interior, and lower pressure drop than known particulate catalysts. The heat source can be oxygen transport membrane reactors.

The present disclosure relates to a single shell open interstage reactor (SSOI). The SSOI comprises a first reaction stage, an interstage heat exchanger, an open interstage region, and a second reaction stage. The SSOI may be configured for upflow or downflow operation. Further, the open interstage region of the SSOI may comprise a supplemental oxidant feed. When the open interstage region comprises a supplemental oxidant feed, the SSOI may further comprise a supplemental oxidant mixing assembly. Processes for producing acrylic acid through the oxidation of propylene are also disclosed.

Fuel tank inerting prefilter assemblies, fuel tank inerting prefilter devices, and methods for treating fluids, particularly process fluids used in fuel inerting tank systems, are disclosed.

A reactor and method for seeded growth of nano-products such as carbon nanotubes, wires and filaments in which selected precursors are introduced into the reactor which is heated to a temperature sufficient to induce nano-product formation from interaction between the precursor gases and a nanopore templated catalyst. The selected precursors are segregated in the reactor through a plate defining two chambers which are sealed off from each other except for a void space provided in the plate. The void space is closed off by a membrane having nanopores and a catalyst formed as a layer. Atomic transfer of material from the selected precursors to form the nano-products on the catalyst layer in the other of the chambers occurs by diffusion through the catalyst layer to form the nano-product on the other of the chambers absent a pressure drop between the two chambers.

A method for determining temperature information for a plurality of tubes in a furnace where one or more digital images provide temperature information for imaged tubes, and temperature information for non-imaged tubes is determined from the temperature information for the imaged tubes and measured temperatures of combined effluent from the imaged and non-imaged tubes.

The present disclosure relates to a single shell open interstage reactor (SSOI). The SSOI comprises a first reaction stage, an interstage heat exchanger, an open interstage region, and a second reaction stage. The SSOI may be configured for upflow or downflow operation. Further, the open interstage region of the SSOI may comprise a supplemental oxidant feed. When the open interstage region comprises a supplemental oxidant feed, the SSOI may further comprise a supplemental oxidant mixing assembly. Processes for producing acrylic acid through the oxidation of propylene are also disclosed.

The present disclosure provides for hydrogen recombiner assemblies utilizing an integrated passive heat sink. More particularly, the present disclosure provides for flameless hydrogen recombiner assemblies utilizing an integrated passive heat sink to convert leaked hydrogen (e.g., inside a spacecraft) to water vapor. In example embodiments, the present disclosure provides for self-regulating and gravity-independent hydrogen recombiner assemblies having an integrated passive heat sink for low-earth orbit (LEO) and deep-space exploration crewed spacecraft, with the hydrogen recombiner assemblies configured to convert leaked hydrogen (e.g., inside a spacecraft) to water vapor.

A structured packing module for a gas phase reactor has a structured packing with a central axis extending along a longitudinal direction, and may further include an inner tube extending coaxially with the structured packing and along the longitudinal direction. The structured packing includes a plurality of corrugated sheets, each arranged circumferentially around the central axis and having a first end and a second end spaced apart from each other along the longitudinal direction. The corrugated sheets are arranged to radially overlap with each other such that corrugations of adjacently disposed corrugated sheets are arranged in a crisscross relationship. The structured packing module includes a gas flow path comprising at least one inter-sheet gas flow path defined between the adjacently disposed corrugated sheets.