Apparatus and methods are provided for converting methane in a feed stream to acetylene. A hydrocarbon stream is introduced into a supersonic reactor and pyrolyzed to convert at least a portion of the methane to acetylene. The reactor effluent stream may be treated to convert acetylene to another hydrocarbon process.

A pulse jet system and method is disclosed. In an example, the pulse jet system includes a combustion chamber, intake ports to deliver combustion agents to the combustion chamber, an expansion chamber to cool a combustion product following combustion of the combustion agents in the combustion chamber, and an exhaust to exit the cooled gas from the expansion chamber. In another example, the pulse jet system includes a combustion chamber with intake ports to deliver combustion agents to the combustion chamber, wherein the combustion chamber is part of a four cycle engine. The pulse jet system also includes an expansion chamber to cool a combustion product following combustion of the combustion agents in the combustion chamber.

A pulse jet system and method is disclosed. In an example, the pulse jet system includes a combustion chamber, intake ports to deliver combustion agents to the combustion chamber, an expansion chamber to cool a combustion product following combustion of the combustion agents in the combustion chamber, and an exhaust to exit the cooled gas from the expansion chamber. In another example, the pulse jet system includes a combustion chamber with intake ports to deliver combustion agents to the combustion chamber, wherein the combustion chamber is part of a four cycle engine. The pulse jet system also includes an expansion chamber to cool a combustion product following combustion of the combustion agents in the combustion chamber.

A pyrolytic reactor comprising a fuel injection zone, a combustion zone adjacent to the fuel injections zone, an expansion zone adjacent to the combustion zone, a feedstock injection zone comprising a plurality of injection nozzles and disposed adjacent to the expansion zone, a mixing zone configured to mix a carrier stream and feed material and disposed adjacent to the feedstock injection zone, and a reaction zone adjacent to the mixing zone. The plurality of injection nozzles are radially distributed in a first assembly defining a first plane transverse to the feedstock injection zone and in a second assembly transverse to the feedstock injection zone.

A pyrolytic reactor comprising a fuel injection zone, a combustion zone adjacent to the fuel injections zone, an expansion zone adjacent to the combustion zone, a feedstock injection zone comprising a plurality of injection nozzles and disposed adjacent to the expansion zone, a mixing zone configured to mix a carrier stream and feed material and disposed adjacent to the feedstock injection zone, and a reaction zone adjacent to the mixing zone. The plurality of injection nozzles are radially distributed in a first assembly defining a first plane transverse to the feedstock injection zone and in a second assembly transverse to the feedstock injection zone.

In a production system for vapor-grown carbon nanofibers includes a static mixer and a micro mist nozzle for preventing un-uniform input material from forming impurities, an anti-adhering coating covering an inner wall of a vertical tubular reactor for preventing a catalyst, raw material and carbon fibers from adhering to the inner wall of the vertical tubular reactor, and a sedimentation device into which a dispersant and water are inputted to separate produced carbon fiber compositions from particulate impurities in water.

In a production system for vapor-grown carbon nanofibers includes a static mixer and a micro mist nozzle for preventing un-uniform input material from forming impurities, an anti-adhering coating covering an inner wall of a vertical tubular reactor for preventing a catalyst, raw material and carbon fibers from adhering to the inner wall of the vertical tubular reactor, and a sedimentation device into which a dispersant and water are inputted to separate produced carbon fiber compositions from particulate impurities in water.

A processing system for producing a product material from a liquid mixture includes an array of one or more power jet modules adapted to jet the liquid mixture into one or more streams of droplets and force the one or more streams of droplets into the processing system adapted to process the one or more streams of droplets into the product material. A method for producing a product material, from a liquid mixture on a processing system includes moving each of the one or more power jet modules and be connected to an opening of a dispersion chamber, opening one or more doors of the one or more power jet modules, processing the one or more streams of droplets inside a reaction chamber, closing the one or more doors of the power jets modules and moving each of the one or more power jet modules in a second direction.

Compositions are provided that include having at least 95% by weight of a taxane, or a pharmaceutically acceptable salt thereof, where the particles have a mean bulk density between about 0.050 g/cm.sup.3 and about 0.15 g/cm.sup.3, and/or a specific surface area (SSA) of at least 18 m.sup.2/g, 20 m.sup.2/g, 25 m.sup.2/g, 30 m.sup.2/g, 32 m.sup.2/g, 34 m.sup.2/g, or 35 m.sup.2/g. Methods for making and using such compositions are also provided.

Solid materials may be processed using shockwaves produced in a supersonic gaseous vortex. A high-velocity stream of gas may be introduced into a reactor. The reactor may have a chamber, a solid material inlet, a gas inlet, and an outlet. The high-velocity stream of gas may be introduced into the chamber of the reactor through the gas inlet. The high-velocity stream of gas may effectuate a supersonic gaseous vortex within the chamber. The reactor may be configured to facilitate chemical reactions and/or comminution of solid feed material using tensive forces of shockwaves created in the supersonic gaseous vortex within the chamber. Solid material may be fed into the chamber through the solid material inlet. The solid material may be processed within the chamber by nonabrasive mechanisms facilitated by the shockwaves within the chamber. The processed material that is communicated through the outlet of the reactor may be collected.