262results about "Liquid-gas reaction as foam/aerosol/bubbles" patented technology

The invention is a continuous process for the preparation of polytrimethylene ether glycol from 1,3-propanediol reactant. In addition, the invention is directed to a continuous multi-stage process comprising reacting at least one reactant in a liquid phase in an up-flow column reactor, and forming a gas or vapor phase by-product wherein the gas or vapor phase by-product is continuously removed at the top and at least one intermediate stage.

A method of making an oxygen-rich and stabilized oxidizing agent in a liquid, preferably water, involves exposure of aerated liquid to repeated bursts of ringing magnetic flux having a primary frequency of 10 kHz to 80 kHz, with the bursts repeated at a frequency of 1 Hz to 100 Hz, and with the water being kept basic at a pH level between pH 7 to pH 10. The oxidizing agent is believed to be a relatively stable complex of hydrogen peroxide, and has a significant anti-microbial effect on microorganisms, including biofilms, in the water achieved by oxidation of the oxidizing agent with chemical components of the microorganisms.

The present invention provides a method for carrying out high temperature thermal dissociation reactions requiring rapid-heating and short residence times using solar energy. In particular, the present invention provides a method for carrying out high temperature thermal reactions such as dissociation of hydrocarbon containing gases and hydrogen sulfide to produce hydrogen and dry reforming of hydrocarbon containing gases with carbon dioxide. In the methods of the invention where hydrocarbon containing gases are dissociated, fine carbon black particles are also produced. The present invention also provides solar-thermal reactors and solar-thermal reactor systems.

An apparatus for effectively dissolving gas into liquid medium to obtain high concentration of gas solution includes a mixer and a tank enclosure, wherein the mixer primarily includes a quasi-Venturi tube and an expansion chamber. During operation, gas is introduced into the liquid in the quasi-Venturi-typed mixer. A valve mounted at the inlet of the mixer is used to regulate the gas flow so that the flow rate of the gas entering the mixer is lower than the rate of the gas drawn into the quasi-Venturi tube. With the gas drawn-in capability of the quasi-Venturi tube, gas can be mixed with the liquid flow through the quasi-Venturi tube under negative pressure and forms small gas bubbles in the liquid. The liquid carrying small gas bubbles flows out of the mixer, and subsequently flows into the tank enclosure and forms a whirlpool therein. As such, the gas bubbles can remain in the liquid for a prolonged time, which helps the gas dissolve in the liquid. The mixing apparatus is applicable for producing high gas concentration of water.

The invention provides a supergravity nano-microbubble generating device and a reaction system. In the device, a liquid phase is a continuous phase, and a gas phase is a dispersed phase; gas enters the interior from a hollow shaft, and primary shearing is carried out on the gas through shearing action of aeration micropores for forming bubbles; then the bubbles are quickly separated from the surface of the rotating shaft under the action of the rotating shaft which rotates at a high speed; and secondary shearing is carried out under the strong shearing force of a super-gravity environment generated by the rotating shaft to form nano-microbubbles. The nano-microbubbles have the advantages of being fast and stable and having a small average particle size, the average particle size of the formed nano-microbubbles is in a range of from 800 nm to 50 microns, and the range of the average particle size of the bubbles can be adjusted and controlled by adjusting the rotating speed of the rotating shaft. According to the device, on one hand, the problem that a liquid phase in a conventional supergravity device is discontinuous and a liquid phase containing nano-microbubbles cannot be formedis solved, and on the other hand, the problem that nano-microbubbles are clustered on the surface of a static microporous medium is solved.

The present invention relates to a process for the manufacture of diisocyanates by phosgenation of the corresponding diamines in which the vaporous diamines, optionally rarefied with an inert gas or with the vapors of an inert solvent, and phosgene are heated separately to temperatures of about 200 DEG C. to about 600 DEG C. and mixed and reacted in a tube reactor characterized in that a number n>=2 of nozzles directed parallel to the axis of the tube reactor are arranged in the tube reactor, the diamine-containing stream being fed into the tube reactor through the n nozzles and the phosgene stream being fed into the tube reactor through the remaining free space.