Abstract:
A hydrothermal oxidation device for treatment of a material in a supercritical medium includes a main body, an internal tube installed inside the main body to form an annular zone along the main body, a stirring mechanism installed in an internal zone of the internal tube and actuated by a rotating shaft, a cooling mechanism to cool the treated material located in the internal zone of the internal tube, an inlet for water and oxidant mix, an effluents outlet, an inlet for material to be treated, located at one end of the main body, this inlet opening up into the internal tube. The oxidation device includes an inlet for a diluted effluent, located in the flange and connected to a preheating coil arranged along an internal wall of the main body and extending from its first end to its second end, the preheating coil opening up into the internal tube.
Abstract:
A high pressure tubular reactor for production of nanoparticles by precipitation has unidirectional fluid flows of precursor and supercritical water directed from inner and outer coaxial inlets to an outlet via a reaction zone immediately downstream of the inlets. The inner inlet is for supercritical fluid, and the outer inlet is for a precursor.
Abstract:
A continuous high capacity system for converting a combination of natural gas and coal into liquid fuel, using a pug for blending less than 200 micron diameter particulate with a plasticizing agent; a sealing auger for forming an agglomerated material and sealing, a cutting device, a vacuum chamber to remove air from the cut material, a second sealing auger for forming a de-aerated agglomerated material and sealing, a second cutting device, a gas injection chamber for impregnating the de-aerated cut material with natural gas, an extruder forming an extrudate, a heating chamber to evolve at least one gas; a pressure sensor and temperature sensors in the heating chamber, a cooling chamber providing controlled pressure and controlled temperature cooling of the evolved gasses, wherein the cooling chamber liquefies sequentially at least 50 percent of the evolved gasses forming a liquid.
Abstract:
In a high pressure and high temperature reaction system suitable for oxidative waste treatment, particularly a reaction system for supercritical water oxidation (SCWO), a method is disclosed for injecting a first fluid of a first temperature at a first flow rate into a second fluid of a second temperature at a second flow rate, mixing the first and the second fluids within a mixing length (115, 215), and wherein the first and second temperatures and the first and second flow rates are selected such that a temperature of the mixed fluids downstream of said mixing length (115, 215) is obtained, at which said first fluid being substantially non-corrosive.
Abstract:
An apparatus for the processing of pre-hydrolysis of biomass, particularly a reactor of the failsafe type, either mobile or not, which may be manufactured of microbonded carbon steel and coated with special material (refractory metals, plastics, etc.). The insertion of vacuum between the shell of the reactor and its coating prevents its implosion and permits the detection of leakage with the helium gas. The resistance to corrosion of the refractory metals enables carrying out of pre-hydrolysis and mineral digestion.
Abstract:
Fluoromonomer is polymerized to obtain a fluoropolymer with the polymerization being carried out in a pressurized polymerization reactor containing a polymerization medium comprising liquid or supercritical CO.sub.2. The polymerization medium is withdrawn from the reactor together with the fluoropolymer and flash decompressed to thereby recover the fluoropolymer from the medium.
Abstract:
An additional isolation valve is incorporated into a vacuum processing system to increase the life of the system's mechanical pump, reduce maintenance costs and downtime, prevent particle back streaming and reduce safety risks to maintenance technicians. The system has a process chamber with at least one port, a foreline valve connected to the port, and a vacuum manifold in fluid communication with the foreline valve. The mechanical pump is connected to the vacuum manifold for evacuating the contents of the process chamber. The isolation valve is connected between the foreline valve and the vacuum manifold and is operated in unison, or primarily in unison, with the foreline valve.
Abstract:
A first vacuum pump (14) is connected to a vacuum chamber (5) by a primary intake line (13) having a first vacuum valve (4) therein. A second vacuum pump (15) is connected to the output of the first vacuum pump (14) by a connecting line (20) having a second vacuum valve (12) therein. A blowout valve (17) is connected to the connecting line (20) between the first pump (14) and the second valve (12). A secondary intake line (19) having therein a third vacuum valve (13) is connected between the vacuum chamber (5) and the intake of the second vacuum pump (15).
Abstract:
The present invention relates to an apparatus for gas phase polymerisation of olefins(s), essentially comprising a fluidized bed reactor and at least one conduit for drawing off polymer provided with an isolation valve and connecting the vertical side wall of the reactor to a lock hopper, the said conduit leaving the vertical side wall of the reactor while being directed downwards so that each part of the said conduit forms with a horizontal plane an angle A ranging from 35.degree. to 90.degree.. It also relates to a process for continuous gas-phase polymerisation of olefin(s) in a fluidized-bed reactor, comprising drawing off the polymer from the vertical side wall of the reactor into a lock hopper via a draw-off conduit so that all flow of the polymer in the draw-off conduit is produced according to a downward direction forming with a horizontal plane an inclination with an angle A at least equal to the angle of repose .beta. of the polymer and not exceeding 90.degree.. The present invention improves the degree of filling of the lock hopper and reduces the amount of gas drawn off with the polymer. (FIG. 1).
Abstract:
Hydrolyzing organic waste material in a multi-stage reactor comprising a heated first stage, a further heated second stage, a still further heated third stage, and a fourth stage, with a valved exit way connected to the fourth stage and a valve entryway connected to the first stage.