A device for making a carbon nanotube array includes a chamber, a gas diffusing unit and a gas supplying pipe. The gas diffusing unit and the gas supplying pipe are in the chamber. The gas diffusing unit is a hollow structure and defines a hole and an outlet. The gas supplying pipe includes a first end and a second end opposite to the first end. The first end extends out of the chamber. The second end is in the chamber and connected to the hole.

The inventions is directed to a new design for catalyst tubes, which makes it possible to apply the concept of regenerative reforming into steam reformers having catalyst tube inlets and outlets at opposite sides of the furnace chamber. The catalyst tube comprises an inlet for process gas to enter the catalyst tube and an outlet for process gas to exit the catalyst tube, which inlet and outlet are located at opposite ends of the catalyst tube. The catalyst tube further comprises a first annular channel comprising the catalyst, a second annular channel for process gas to flow countercurrently or co-currently to the process gas flowing through the first annular channel.

Alkylene oxides are polymerized in a tubular reactor. The alkylene oxide is continuously introduced into the tubular reactor through multiple introduction points located along the length of the tubular reactor. Monomer flow rates are increased along the length of the reactor to maintain a nearly constant concentration of unreacted alkylene oxide.

A reactor device for the release of a gas from a starting material includes a reactor housing having a longitudinal axis and at least one single reactor arranged in the reactor housing, the single reactor including a base plate oriented transversely to the longitudinal axis, a starting material flow channel defining a starting material flow direction, a catalyst arranged in the starting material flow channel, a heating unit for heating the catalyst and/or the starting material and a gas collection chamber arranged above the starting material flow channel for collecting the gas released from the starting material.

A contact chamber in which a bed of fluid treatment media is fully fluidized by using a fluidizer. The fluidizer may be, for example, an internal or external eductor that acts as a pump for a media and fluid mixture to boost fluid flow and generate recirculation that keeps the media suspended in the fluid or an arrangement of nozzles, mixing blades, pumps, baffles, or irregular cross-sectional shapes (or combinations of any of these) to promote fully fluidizing the media in the chamber and causing the media to recirculate within the chamber.

Systems and methods for making ceramic powders configured with consistent, tailored characteristics and/or properties are provided herein. In some embodiments a system for making ceramic powders, includes: a reactor body having a reaction chamber and configured with a heat source to provide a hot zone along the reaction chamber; a sweep gas inlet configured to direct a sweep gas into the reaction chamber and a sweep gas outlet configured to direct an exhaust gas from the reaction chamber; a plurality of containers, within the reactor body, configured to retain at least one preform, wherein each container is configured to permit the sweep gas to flow therethrough, wherein the preform is configured to permit the sweep gas to flow there through, such that the precursor mixture is reacted in the hot zone to form a ceramic powder product having uniform properties.

The present invention relates to a reactor for production of synthesis gas that optionally has a fluid-tight connection to a heat exchanger, and to a process for producing synthesis gas, preferably under high pressure.

Systems and methods for making ceramic powders configured with consistent, tailored characteristics and/or properties are provided herein. In some embodiments a system for making ceramic powders, includes: a reactor body having a reaction chamber and configured with a heat source to provide a hot zone along the reaction chamber; a sweep gas inlet configured to direct a sweep gas into the reaction chamber and a sweep gas outlet configured to direct an exhaust gas from the reaction chamber; a plurality of containers, within the reactor body, configured to retain at least one preform, wherein each container is configured to permit the sweep gas to flow therethrough, wherein the preform is configured to permit the sweep gas to flow there through, such that the precursor mixture is reacted in the hot zone to form a ceramic powder product having uniform properties.

The invention relates to a lighting device for a photoreactor comprising a tubular housing (40) having a longitudinal axis (41) and a plurality of individual light sources (30) mounted on the inner surface of the housing (40), wherein the housing (40) comprises flow channels (46) for a heat transfer fluid, the flow channels (46) being arranged at the back side of the inner surface of the housing (40) behind the individual light sources forming a conformal cooling passage for the individual light sources. The invention further relates to a photoreactor comprising a lighting device and a reaction chamber with at least one tubular flow channel, the reaction chamber being arranged inside the lighting device and the channel wall being made of a material transmissive to the light emitted by the light sources.

A device for making a carbon nanotube array includes a chamber, a gas diffusing unit and a gas supplying pipe. The gas diffusing unit and the gas supplying pipe are in the chamber. The gas diffusing unit is a hollow structure and defines a hole and an outlet. The gas supplying pipe includes a first end and a second end opposite to the first end. The first end extends out of the chamber. The second end is in the chamber and connected to the hole.