The invention discloses residual gas heat exchange combustion-supporting system based on a methanol-water mixture reforming hydrogen production system and a method thereof, wherein the residual gas heat exchange combustion-supporting system comprises a reformer, a heat exchange tube and an air intake device; the reformer is provided with a reforming chamber, a separating device, a combustion chamber and an exhaust vent, the residual gas produced by the reformer is discharged from the exhaust vent to the first delivery passage of the heat exchange tube; the heat exchange tube has coaxial double-layer first and second delivery passages. The invention enables to fully reclaim the heat from the residual gas discharged by the reformer, so that the outside air is warmed before entering the reformer, which in turn makes the warmed outside air attain a very good combustion-supporting effect.

A monolith-type reactor includes a porous support body, a plurality of first cells through which a raw material gas flows, a plurality of second cells through which the sweep gas flows, separation membranes, and a catalyst. The first cells pass through the porous support body in a first direction. The second cells extend in the porous support body in the first direction. The separate membranes are respectively formed on inner peripheral surfaces of the first cells and permeable to a product of the conversion reaction. The catalyst is arranged inside the separation membranes, and promotes the conversion reaction. In a cross section taken along a second direction perpendicular to the first direction, the average cross-sectional area of the first cells is larger than the average cross-sectional area of the second cells.

The present invention discloses aromatization reactor vessels with hydrogen membrane tubes, and associated aromatization reactor vessel systems. Also disclosed are processes for conducting aromatization reactions utilizing these reactor vessels and systems.

A method and apparatus for preparing boron nitride nanotubes (BNNTs) according to an embodiment may ensure mass-production, may increase yield by reducing a production time, and may prepare BNNTs with high purity. The method includes steps of providing a first powder including boron, forming a second powder including a boron precursor by nano-sizing the first powder, forming a precursor disk by mixing the second powder with a binder; and growing BNNTs on the precursor disk.

A process for preparing magnetic activated carbons including the steps of a) treating an aqueous solution having a biomass hydrothermally at autogenic pressure at a temperature 180 and 250 C., under acidic conditions in the presence of iron ions, to obtain a precursor product, b) activating the precursor product obtained in step a) by mixing an activating agent at elevated temperatures between 550 and 850 C., for a period up to 9h. The disclosure also relates to magnetic activated carbon prepared according to the process and use of the carbon for separation and storage of gases and purification of liquids. A method for separation of particles from a liquid and/or a gas, and method for regenerating magnetic activated carbon by heating using an oscillating electromagnetic field are also disclosed.

A methane converter for converting methane into carbon dioxide and water, the converter comprising a gas feed for feeding methane into the converter, a mesh pad separator for receiving the methane from the gas feed and for separating methane gas from liquid, a drain connected to the separator to drain off the liquid, an air intake for receiving air, a tubular section extending upwardly from the air intake, a methane nozzle connected to the separator for receiving the methane gas from the separator and for discharging the methane gas inside the tubular section at a point downstream of the air intake, a catalyst bed within the tubular section for reacting the methane gas with oxygen in the air to form the carbon dioxide and the water, and an outlet of the tubular section for emitting the carbon dioxide and the water.

A method and system for producing a synthesis gas in an oxygen transport membrane based reforming system is disclosed that carries out an air heated pre-reforming process, a primary reforming process, a secondary reforming process.

Herein disclosed is a dry reforming reactor comprising a gas inlet near the bottom of the reactor; a gas outlet near the top of the reactor; a fluidized bed comprising a catalyst; and one or more hydrogen membranes comprising palladium (Pd). In some cases, the one or more hydrogen membranes comprises Pd alloy membranes, or Pd supported on ceramics or metals. In some cases, the one or more hydrogen membranes are placed vertically in the reactor as hydrogen membrane tubes hanging from the top of the reactor. In some cases, the hydrogen membranes are configured to selectively collect hydrogen from the tubes via one or more internal manifolds and sent to an external hydrogen collection system.

A fluid-solids contactor comprising an annular rotating fluidized bed and a method of using the same are disclosed. The fluid-solids contactor includes a vessel and a plurality feed inlets disposed thereon. The vessel comprises a stationary inner wall, an outer wall, and a chamber formed between the stationary inner wall and the outer wall. The feed inlets are configured to create an annular rotating bed with mixture of solids and a fluid when the solid particles and a fluid are fed into the chamber. The stationary inner wall of the vessel is permeable to the fluid such that the fluid from the chamber can be continuously withdrawn from the solids to the space within the stationary inner wall of the vessel.

A CO.sub.2 conversion device reacts CO.sub.2 and hydrogen as raw materials to be converted to methanol or dimethyl ether, in which a methanol synthesis catalyst and a methanol conversion catalyst are disposed with the separation membrane, and methanol and water are produced from CO.sub.2 and hydrogen by the methanol synthesis catalyst disposed on a high pressure side via the separation membrane, and then the produced methanol and water from a reaction system containing CO.sub.2 and hydrogen are selectively subjected to membrane-permeation through the separation membrane, and a mixture of methanol, dimethyl ether, and water is obtained by the methanol conversion catalyst disposed on a low pressure side via the separation membrane.