Patent application number | Description | Published |
20130000449 | TITANIUM POWDER PRODUCTION PROCESS - The invention provides a crystalline Ti powder produced in a molten salt medium, said powder comprising predominantly particles of single α-Ti crystals that are directly applicable in powder metallurgy. The invention extends to continuous process for the production of titanium powder in a molten salt medium by known reaction mechanisms, said process including the steps of reacting in a first reaction zone in a molten salt TiCl4 with reactants selected from Ti particles, a substoichiometric quantity of reducing agent, and a mixture of titanium metal and a substoichiometric amount of reducing agent, to form Ti sub-chloride, transferring Ti sub-chloride containing salts from the first reaction zone into a second reaction zone, which is electrically, ionically, or both electrically and ionically isolated from the first reaction zone, reacting in the second reaction zone the Ti sub-chloride with molten reducing metal to form dispersed Ti powder and molten salt, and withdrawing a portion of a suspension of Ti powder in molten salt from the second reaction zone to downstream processing units to separate the Ti powder from the salt and optionally recycle a portion of said Ti powder in molten salt to the first reaction zone. The invention further extends to an apparatus for the process of the invention. | 01-03-2013 |
20130266494 | UPGRADING OF TITANIFEROUS MATERIAL - A method of upgrading a titaniferous material includes nitriding and reducing a titaniferous material which includes TiO | 10-10-2013 |
20150144055 | PROCESS FOR THE PRODUCTION OF CRYSTALLINE TITANIUM POWDER - The invention provides a process for the production of crystalline titanium powder containing single crystals or agglomerates of single crystals having an average crystal size (by volume) greater than 1 μm, said process including reacting a titanium chloride species, preferably titanium dichloride, and reducing metal in a continuous back-mix reactor to produce a free flowing suspension of titanium powder in molten chloride salt wherein: i. both the titanium chloride species and the reducing metal are dissolved in a molten chloride salt and fed to the reactor containing a chloride salt of the reducing metal; ii. the average feed ratio of the titanium chloride species and reducing metal to the continuous back-mix reactor is within 1%, preferably within 0.1%, of the stoichiometric ratio required to fully reduce the titanium chloride salt to titanium metal; iii. the concentration of titanium powder in the fluid suspension of titanium powder in molten salt in the continuous back-mix reactor is between 2 and 23 mass %; and iv. The reducing metal is lithium, sodium, magnesium, or calcium. | 05-28-2015 |
Patent application number | Description | Published |
20080236147 | Reductant delivery unit for selective catalytic reduction - A reductant delivery unit ( | 10-02-2008 |
20080282679 | Diesel dosing system relief of trapped volume fluid pressure at shutdown - A diesel dosing system for a vehicle includes a control valve ( | 11-20-2008 |
20090107126 | Fluid supply connection for reductant delivery unit for selective catalytic reduction systems - A reductant delivery unit ( | 04-30-2009 |
20100146944 | Diesel Dosing System Relief Of Trapped Volume Fluid Pressure At Shutdown - A diesel dosing system for a vehicle includes a control valve ( | 06-17-2010 |
20140137543 | Reductant Delivery Unit For SCR Systems Having Improved Deposit Resistance - A reductant delivery unit for selective catalytic reduction (SCR) after-treatment for vehicles includes a fluid injector having a fluid inlet and a fluid outlet. The fluid inlet receives a source of urea solution. An injector flange is coupled directly with an end of the fluid injector and has a flange outlet in fluid communication with the fluid outlet of the fluid injector. The flange outlet is associated with an exhaust gas flow path upstream of a SCR catalytic converter with the fluid injector controlling injection of urea solution into the exhaust gas flow path. Internal surface structure that defines the flange outlet includes a conical surface joined with at least one radius surface. The radius surface is constructed and arranged to resist formation of deposits on the internal surface structure due to break down of the urea solution. | 05-22-2014 |
20140314644 | REDUCTANT DELIVERY UNIT FOR AUTOMOTIVE SELECTIVE CATALYTIC REDUCTION WITH REDUCING AGENT HEATING - A reductant delivery unit for selective catalytic reduction (SCR) after-treatment for vehicles includes a solenoid operated fluid injector associated with an exhaust gas flow path upstream of a SCR catalytic converter. The fluid injector has a fluid inlet and a fluid outlet. The fluid inlet receiving a source of reducing agent and the fluid outlet communicating with the exhaust gas flow path so that the fluid injector controls injection of urea solution into the exhaust gas flow path. The fluid injector has an inlet tube for directing the reducing agent between the fluid inlet and the fluid outlet. A shield is fixed with respect to the fluid injector and surrounds at least portions of the fluid injector. A coil heater is integral with the fluid injector and is constructed and arranged, when energized, to inductively heat the inlet tube to thereby heat the reducing agent within the inlet tube. | 10-23-2014 |
20140373508 | REDUCTANT DELIVERY UNIT FOR AUTOMOTIVE SELECTIVE CATALYTIC REDUCTION WITH THERMALLY OPTIMIZED PEAK-AND-HOLD ACTUATION BASED ON AN INJECTOR OPEN EVENT - A trigger circuit is provided for a peak and hold driver circuit for a reductant delivery unit (RDU) having a solenoid-operated injector for selective catalytic reduction (SCR) after-treatment for vehicles. The peak and hold driver circuit is constructed and arranged to actuate the injector in a rise-to-peak current phase followed by a low current hold phase. The trigger circuit includes an injector open detection circuit constructed and arranged, based on a detected opening event of the injector, to trigger a transition from the rise-to-peak phase to the subsequent hold phase of the injector. | 12-25-2014 |
20150059322 | LIQUID COOLED REDUCTANT DELIVERY UNIT FOR AUTOMOTIVE SELECTIVE CATALYTIC REDUCTION SYSTEMS - A reductant delivery unit having active cooling which is constructed to have sufficient structural robustness, and to improve corrosion resistance of the assembly, where an attack on the base injector is conceivable with the use of incorrect coolant media. The reductant delivery unit has an upper shield, a lower shield connected to the upper shield, and an inner sleeve. The reductant delivery unit also includes a lower sleeve connected to the inner sleeve and the lower shield. A liquid cooling cavity is formed by the connection between the inner sleeve and the lower shield, the lower sleeve and the lower shield, and the lower sleeve and the inner sleeve. Coolant flows into the liquid cooling cavity to provide a cooling function to an injector partially located within the inner sleeve, and a corrugated portion of the lower sleeve transfers heat away from at least a portion of the injector. | 03-05-2015 |
20150115051 | PURGE SYSTEM FOR REDUCTANT DELIVERY UNIT FOR A SELECTIVE CATALYTIC REDUCTION SYSTEM - A purge procedure which is part of an injector, that may be used as part of a reductant delivery unit (RDU), where the RDU is part of a selective catalytic reduction system for injecting diesel exhaust fluid into an exhaust system, to control exhaust emissions. The RDU delivers a reductant carrier to the engine exhaust system. The purge process includes a control strategy to improve the quality of the purge cycle (i.e., increase the amount of fluid evacuated). The sequence of the purge event is adjusted in order to generate a strong vacuum in the fluid supply line and the injector—this enhances the efficiency of the purge by increasing the initial flow rates through the injector. However, upon opening the injector, the pressure inside the fluid path increases to a level just below the ambient pressure outside the injector, therefore the gas flow rate is substantially reduced. | 04-30-2015 |