A device for rapidly preparing β-Si3N4 by gas-solid reaction and a method thereof, and relates to the technical field of recycling and reuse of waste fine silicon powder. The bottom of a stock bin communicates with a first opening and closing passage, a first connection passage, and the top of a first transitional bin; the bottom of the first transitional bin communicates with the first opening and closing passage, a second connection passage, and the top of a reaction bin; the bottom of the reaction bin communicates with a second opening and closing passage, the first connection passage, and the top of a second transitional bin; the bottom of the second transitional bin communicates with the top of a conveying passage through the first opening and closing passage; a material outlet of the conveying bin communicates with the collection bin.

The present invention relates to a “safety-by-design” method for the preparation of nanoparticles, to a method for the preparation of a nanocomposite material, and to the use of a direct liquid injection device so as to prepare nanoparticles or nanocomposite materials in a “safety-by-design” process.

A device for pyrolysis reactions includes a feeding pump, a flow meter, an atomizer, a pyrolysis reactor, electromagnetic coils, an electromagnetic induction heating power, a temperature sensor, a temperature controller, a condenser and a product tank. The feeding pump is connected with the flow meter which is connected to the inlet of the atomizer in the pyrolysis reactor. There is a port at the bottom of the pyrolysis reactor, with the port at the top of the pyrolysis reactor connected with the condenser. The condenser is connected with the product tank. The external wall of the pyrolysis reactor is surrounded by electromagnetic coils which are connected with the electromagnetic induction heating power. The temperature sensor is placed between the pyrolysis reactor and the coils, which is connected with the temperature controller. The contact resistance between the atomized material and the hot surface can be.

A method of safely mixing a hydrocarbon with an oxidant is provided. The hydrocarbon and oxidant are saturated with a non-flammable liquid in pre-mix zones that are flooded with the non-flammable liquid and fluidly connected to a common mixing zone that is partially flooded with the non-flammable liquid. The saturated hydrocarbon and oxidant combine within the common mixing zone forming bubbles of a homogeneous gas mixture of hydrocarbon and oxidant, preferably in a ratio of hydrocarbon to oxidant that is outside of the flammability limit, that can exit the non-flammable liquid into a headspace where it can be retrieved for use in an oxidative reaction process such as oxidative dehydrogenation.

The present disclosure provides a supercritical fluid gasification system. In some embodiments, the system includes a reactor having a reactor shell including sidewalls that extend between a top reactor cover and a bottom reactor cover, where the sidewalls, the top cover, and the bottom cover enclosing a reactor shell channel. In some embodiments, the reactor includes a thermal shield positioned within the reactor shell channel, the thermal shield having sidewalls that extend between a top thermal shield cover and a bottom thermal shield cover, where the sidewalls, the top thermal shield cover, and the bottom thermal shield cover enclosing a thermal shield channel. In some embodiments, the reactor includes a fluid feed supply conduit in fluid communication with the thermal shield channel, a supercritical fluid conduit in fluid communication with the thermal shield channel, and a product conduit in fluid communication with the thermal shield channel.

Disclosed are a method for manufacturing hydrogen microbubbles (A1) and a device (10) thereof. The device comprises air pressure assembly (1) and a water container (2), wherein the water container (2) is loaded with water (A). The air pressure assembly (1) can perform gas suction and pressurization and the gas enters a hydrogen oscillation generation unit (3). The hydrogen oscillation generation unit (3) is internally provided with a magnesium alloy-manufactured hydrogen oscillator (4), and the hydrogen oscillator (4) is reacted with water molecules contained in the gas to obtain magnesium oxide and hydrogen. Then, the chemically reacted gas is sprayed by the hydrogen oscillation generation unit (3) into the water (A) via a gas spray nozzle (5), forming hydrogen microbubbles (A1) containing hydrogen in the water (A).

Per- and polyfluoroalkyl substances (PFAS) are destroyed by oxidation in supercritical conditions. PFAS in water can be concentrated and prepared for destruction in a pretreatment phase. Following annihilation of the PFAS in supercritical conditions to levels below 5 parts per trillion (ppt), the water effluent can be used to recover heat, returned to sub-critical conditions, and then released back into the environment.

A processing system and method of producing a particulate material from a liquid mixture are provided. The processing system generally includes a system inlet connected to one or more gas lines to deliver one or more gases into the processing system, one or more power jet modules adapted to jet a liquid mixture into one or more streams of droplets and to force the one or more streams of droplets into the processing system, and a reaction chamber adapted to deliver the one or more streams of droplets in the presence of the one or more gases and process the one or more streams of droplets into the particulate material. The method includes delivering one or more gases into a processing system, jetting the liquid mixture into one or more first droplets streams using one or more power jet modules of the processing system and into the processing system, and reacting the one or more first droplets streams delivered from the processing chamber inside a reaction chamber of the processing system in the presence of the one or more gases into the particulate material at a first temperature.

The present disclosure relates to a system and method for synthesis of condensed nano-materials to at least one of create nanoparticles or modify existing nanoparticles. In one embodiment the system may have a source of liquid precursor, with the liquid precursor including a compound therein. A flow control element and a compression wave generating subsystem are also included. The flow control element is in communication with the source of the liquid precursor and creates a jet of liquid precursor. The compression wave generating subsystem drives a compression wave through at least a substantial portion of a thickness of the jet of liquid precursor to sufficiently compress the jet of liquid precursor, and to increase pressure and temperature of the jet of liquid precursor, to at least one of create nanoparticles or modify existing nanoparticles.

A tubular reactor comprises a tubular shell, an external jacket, and a gas distribution device at the top of the shell, wherein at least one group of feed nozzles are distributed uniformly on the shell, each group comprising at least one phosgene nozzle and at least one diamine nozzle; a reaction material is sprayed through the nozzles and impinges with each other in a middle impingement zone to strengthen the reaction effect, the gas distribution device is arranged at the top of the shell and the upper part of the feed nozzle, and an inert medium distributed uniformly through the gas distribution device is refracted at the top of the shell into an impingement reaction zone, so as to reduce the temperature and concentration of the reaction zone.