| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 023 | Chemistry: physical processes | 20 |
| 023293000 | PHYSICAL PROCESSES | 20 |
| 20080263832 | Reactor for Mixing and Reacting Two or More Fluids As Well As Transferring Heat Between Said Fluids and a Method for Operating Said Reactor - The present invention relates to a reactor for mixing and reacting two or more fluids as well as transferring heat between said fluids. Said reactor comprises a pressure vessel (g) having at least one inlet and one outlet and which enclose a multi-channel monolithic structure (f), a manifold assembly (b) sealed to one end of said structure where the channel openings are, for feeding fluid to said structure and discharging fluid from said structure, a means (h) sealed to the opposite end of said structure where said manifold assembly is sealed, for changing the direction of fluid flow path 180 degrees when said flow leaves the channels in said structure. Furthermore, the present invention relates to a method for operating said reactor. | 10-30-2008 |
| 20110271490 | SYSTEM AND METHOD THAT REMOVES CONTAMINANTS FROM SULFUR - A system and method for removing contaminant from sulfur (or sulphur) to a level that allows re-processed sulfur to reenter a supply chain. The system and method melt contaminated sulfur, filters the molten sulfur, and then dispenses the less contaminated sulfur after filtering it. More specifically, solid contaminated sulfur enters a settling tank, while heated molten sulfur circulates through the system and the settling tank. The circulation of the molten sulfur assists in the melting process of the solid sulfur, allowing the solid sulfur to melt efficiently. In preferred embodiments of the system, the system uses steam jacked sulfur lines and steam tracing to maintain temperatures for melting the solid sulfur and maintaining the molten state of the sulfur circulating through the system. Furthermore, the system comprises a programmable logic controller, which controls motors, pumps, valves, and environment monitoring instruments. | 11-10-2011 |
| 023294000 | Sublimation | 1 |
| 20080196208 | Solid carbon dioxide as a fuel source - Embodiments of solid carbon dioxide fuel utilize the sublimating properties of solid carbon dioxide. When placed inside an expansion chamber, with water, the sublimating CO | 08-21-2008 |
| 023295000 | Crystallization | 14 |
| 20090119882 | Firmly adhering silicon nitride-containing release layer - The invention relates to a slip for producing a durable, firmly adhering release layer on a substrate, comprising a suspension of solid particles, wherein the solid particles comprise 67-95% by weight of silicon nitride and 5-33% by weight of an SiO | 05-14-2009 |
| 20080295294 | PROCESSING OF FINE SILICON POWDER TO PRODUCE BULK SILICON - A method for using substantial quantities of silicon powders as charge and processing it to produce a high quality silicon ingots suitable for photovoltaic use is disclosed. In a fused silica crucible, silicon feedstock containing more than about 5% by weight silicon powder is charged. The crucible with the charged silicon feedstock is placed into a furnace chamber and a vacuum is drawn to remove air. The vacuum is applied slowly. Then, the furnace chamber is backfilled with argon gas and heated to form molten silicon. Afterward, the molten silicon is solidified and annealed to form a multicrystalline silicon ingot. | 12-04-2008 |
| 20090049653 | - This invention intends to enable silicon compound to be removed from waste etching solution at a high removal rate and waste etching solution to be recycled without disposing it. The etching solution reproducing apparatus includes: temperature adjusting means for adjusting the temperature of taken out waste etching solution; atomizing means for atomizing waste etching solution adjusted in temperature by the temperature adjusting means; precipitating means for collecting waste etching solution atomized by the atomizing means and precipitating silicon compound in the waste etching solution; and separating means for separating silicon compound precipitated from the waste etching solution by the precipitating means so as to obtain reproduced etching solution. | 02-26-2009 |
| 20110138581 | CRYSTALLIZATION METHOD AND CRYSTALLIZATION APPARATUS - A crystallization method includes: actually measuring a particle number of the crystals precipitated from the saturated solution and a concentration of the saturated solution, while cooling the solution according to a cooling temperature profile; calculating an absolute particle number of crystals precipitated from the saturated solution according to a mass balance, based on an actual measurement value of the particle number and an actual measurement value of the concentration; heating the saturated solution when the absolute particle number exceeds a threshold to perform heating control so that the absolute particle number becomes a set value; and cooling the saturated solution again according to a preset cooling temperature profile after controlling to dissolve excessive crystals in the solution so that the absolute particle number returns to the set value. | 06-16-2011 |
| 20080196209 | Method And Apparatus For Refining A Molten Material - A method for the directional solidification of silicon or other materials. A cooled plate is lowered into a silicon melt and an ingot of solid silicon is solidified downwards | 08-21-2008 |
| 023299000 | With extraction | 2 |
| 20110061205 | METHOD AND DEVICE FOR CONTINUOUSLY PRODUCING A CRYSTALLITE HAVING A CONSTANT PARTICLE SIZE DISTRIBUTION - The invention proposes a method and a device for continuously producing a crystallite, wherein a metered amount of seed crystals is fed continuously to the internal solution circuit of a crystallizer, in particular a DTB crystallizer, through a crystallization seed line from a seed generator preferably designed as a flash crystallizer. The amount of seed crystals fed is controlled by an electronic control system as a function of a measured value determined by a sensor, said value being representative of the particle size distribution of the crystallites in the solution in the internal circuit in the crystallizer. By way of a line, the seed generator receives a partial stream of the external solution circuit of the crystallizer, said external circuit being routed through a line. Excess fine crystalline suspension can be fed back to the external circuit from the seed generator by way of a return line. | 03-17-2011 |
| 20110146030 | Rotating knife, washing column, and method for disintegrating a crystal bed in a washing column - A rotating knife is disclosed for disintegrating a crystal bed formed in a washing column for processing suspension of solid particles in a liquid. The rotating knife is provided with a spoke support. The spoke support comprises at least two spokes. The relative angle of the spokes is between approximately 20° and approximately 80°. | 06-23-2011 |
| 023300000 | With added material | 6 |
| 20090056080 | APPARATUS FOR FORMING PARTICLES OF A TARGET SUBSTANCE - Reactor vessel for an apparatus for forming particles of a target substance, includes:
| 03-05-2009 |
| 20100050393 | APPARATUS AND METHOD OF USE FOR AN INERT GAS REBREATHER USED IN FURNACE OPERATIONS - This invention relates to an apparatus and a method of use for an inert gas rebreather used in furnace operations, such as melting and/or casting high purity silicon for solar cells and solar modules. The apparatus includes a process chamber, a reservoir in fluid communication with the process chamber, and a motive force device in fluid communication with the process chamber and the reservoir. Recycling or reusing the inert gas reduces operating expenses of the casting process while maintaining low impurity levels in the cast silicon. | 03-04-2010 |
| 20080289150 | Method of Purifying Metal - A method for purifying a metal, which includes: a first step of holding a first molten metal containing impurities in a first crucible; a second step of immersing a first cooling body in the first molten metal held in the first crucible while letting a cooling fluid flow in the interior of the cooling body to crystallize a first purified metal on a surface of the cooling body; a third step of taking out the first cooling body with the first purified metal crystallized thereon from the first molten metal; a fourth step of holding in a crucible a second molten metal having an impurity concentration less than that of the first molten metal of the first step; a fifth step of melting the first purified metal crystallized in the second step and holding the molten metal in a second crucible together with the second molten metal held in the fourth step; a sixth step of immersing a second cooling body in the second molten metal held in the fifth step while letting a cooling fluid flow in the interior of the cooling body to crystallize a second purified metal on a surface of the cooling body; and a seventh step of taking out the second cooling body with the second purified metal crystallized thereon in the sixth step from the second molten metal. | 11-27-2008 |
| 023301000 | Seed | 3 |
| 20080229549 | Method of growing group III nitride crystals - This disclosure pertains to a process for making single crystal Group III nitride, particularly gallium nitride, at low pressure and temperature, in the region of the phase diagram of Group III nitride where Group III nitride is thermodynamically stable comprises a charge in the reaction vessel of (a) Group III nitride material as a source, (b) a barrier of solvent interposed between said source of Group III nitride and the deposition site, the solvent being prepared from the lithium nitride (Li | 09-25-2008 |
| 20090000080 | Solid Hollow Fiber Cooling Crystallization Systems and Methods - A solid hollow fiber cooling crystallizer and method for crystallizing aqueous and organic solutions are provided. The solid hollow fiber crystallizer (SHFC) for carrying out cooling crystallization of inorganic/organic microsolutes/macrosolutes from solution generally includes a bundle of non-porous hollow fibers mounted within a shell where a feed solution for crystallization flows through the lumen side of the hollow fibers and a cooling solution flows through the shell side to form nuclei and subsequently crystals in the feed solution at a temperature below its saturation temperature. The solid hollow fiber crystallizer may be combined with a mixing device, such as a completely stirred tank or static mixer, to further effectuate crystallization. The solid hollow fiber crystallizer may be operated in a number of modes including feed recycle mode, once through mode, SHFC-in-line static mixer in series mode, and SHFC-CST in series mode. The advantages of solid hollow fiber cooling crystallization in comparison to conventional crystallization processes include improved temperature control between crystallizing solution and coolant, higher nucleation rates, improved control of crystal size and crystal size distribution, smaller crystal size, capability for decoupling crystal nucleation and crystal growth, decreased fouling of process equipment, and improved process scale-up. | 01-01-2009 |
| 20100024172 | PROCESS FOR CONTINUOUS PRODUCTION OF LARGE CRYSTAL PRODUCTS - The invention relates to a continuous process for preparing large crystal products of a crystalline product in a fluid bed crystallizer, said fluid bed crystallizer comprising a crystallization vessel and means for mechanically impacting of crystals; and connected to the crystallization vessel (i) a feed line; (ii) an external circulation circuit comprising means for determining properties of the slurry in the external circulation circuit and a heat exchanger; and (iii) a product withdrawal line, wherein—for any specific crystalline product and at any flow rate chosen in the external circulation circuit—the weight percentage of crystals of the crystalline product in the slurry in the external circulation circuit, ECCWPC, is controlled by said means for determining properties of the slurry within a specified and predetermined narrow range having a maximum and minimum value not more apart than at most 25% by weight and falling within the range of from 1 to 50% by weight. Preferably, the crystalline product is ammonium sulphate, and the ECCWPC is controlled within a range of from 3 to 20% by weight, preferably of from 5 to 15% by weight, more preferably of from 8 to 12% by weight. The product obtained may be further subjected to size classification by screening. | 02-04-2010 |
| 023302000 | Alkali metal and ammonium compounds | 1 |
| 023303000 | Common salt | 1 |
| 20110214257 | SODIUM CHLORIDE PRODUCTION PROCESS - The present invention pertains to a process for producing sodium chloride comprising the steps of: (i) preparing a brine having a sodium chloride concentration which is higher than the sodium chloride concentration of the eutectic point but lower than the sodium chloride concentration of a saturated brine by dissolving a sodium chloride source in water; (ii) cooling the resulting brine by indirect cooling in a self-cleaning fluidized bed heat exchanger/crystallizer to a temperature lower than 00 C but higher than the eutectic temperature of the resulting brine, thereby forming a slurry comprising sodium chloride dihydrate and a mother liquor; (iii) feeding the sodium chloride dihydrate to a recrystallizer to form sodium chloride and a mother liquor, and (iv) recycling at least part of the mother liquor obtained in step (ii) and/or step (iii) to step (i). | 09-08-2011 |
| 023308000 | Melting out | 1 |
| 20090031535 | SILICON RELEASE COATING, METHOD OF MAKING SAME, AND METHOD OF USING SAME - A method of making a release coating includes the following steps: forming a mixture that includes (a) solid components comprising (i) 20-99% silicon by weight and (ii) 1-80% silicon nitride by weight and (b) a solvent; applying the mixture to an inner portion of a crucible or graphite board adapted to form an ingot or wafer comprising silicon; and annealing the mixture in a nitrogen atmosphere at a temperature ranging from 1000 to 2000° C. The invention may also relate to release coatings and methods of making a silicon ingot or wafer including the use of a release coating. | 02-05-2009 |
| 023313000 | Agglomerating | 2 |
| 20090031536 | Method for producing porous substances - A porous substance producing method for producing a porous substance; by holding particles for precursors of the porous substance in micelles or inverse micelles kept in a dispersed state in a solvent with a surfactant; by agglomerating the particles of the micelles or inverse micelles to each other; and by baking the agglomerated particles. The method comprises the step of agglomerating the particles of the micelles or inverse micelles to each other by performing a treatment to resolve the dispersed state of the micelles or inverse micelles containing the particles for the precursors, with the surfactant. | 02-05-2009 |
| 20090271953 | Process for compacting powders - Fluffy powders, such as calcined kaolin clays or air floated clays, can be compacted using a process which comprises applying increasing amounts of pressure to a powder moving through a confinement area. The compacted product has an improved bulk density and improved wet out and slurry incorporation times as compared to the non-compacted starting material feed. | 11-05-2009 |
| 023293000 | Sulfur | 1 |
| 20080263832 | Reactor for Mixing and Reacting Two or More Fluids As Well As Transferring Heat Between Said Fluids and a Method for Operating Said Reactor - The present invention relates to a reactor for mixing and reacting two or more fluids as well as transferring heat between said fluids. Said reactor comprises a pressure vessel (g) having at least one inlet and one outlet and which enclose a multi-channel monolithic structure (f), a manifold assembly (b) sealed to one end of said structure where the channel openings are, for feeding fluid to said structure and discharging fluid from said structure, a means (h) sealed to the opposite end of said structure where said manifold assembly is sealed, for changing the direction of fluid flow path 180 degrees when said flow leaves the channels in said structure. Furthermore, the present invention relates to a method for operating said reactor. | 10-30-2008 |
| 20110271490 | SYSTEM AND METHOD THAT REMOVES CONTAMINANTS FROM SULFUR - A system and method for removing contaminant from sulfur (or sulphur) to a level that allows re-processed sulfur to reenter a supply chain. The system and method melt contaminated sulfur, filters the molten sulfur, and then dispenses the less contaminated sulfur after filtering it. More specifically, solid contaminated sulfur enters a settling tank, while heated molten sulfur circulates through the system and the settling tank. The circulation of the molten sulfur assists in the melting process of the solid sulfur, allowing the solid sulfur to melt efficiently. In preferred embodiments of the system, the system uses steam jacked sulfur lines and steam tracing to maintain temperatures for melting the solid sulfur and maintaining the molten state of the sulfur circulating through the system. Furthermore, the system comprises a programmable logic controller, which controls motors, pumps, valves, and environment monitoring instruments. | 11-10-2011 |
