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| Number | Title | Issue Date |
| 7658904 | Process for the production of hydrogen by the thermochemical route, based on the hydrochlorination of cerium Process for the production of hydrogen by the thermochemical route from water, based on the chlorine/cerium cycle, in which, according to a first reaction scheme, the following reactions are carried out: H2O+Cl2=2HCl+½O2;â... | 02/09/2010 |
| 7442363 | Hydrogen iodide manufacturing method and hydrogen iodide manufacturing apparatus A hydrogen iodide manufacturing method which includes a step of producing aqueous solution of hydrogen iodide and sulfuric acid by causing iodine-containing aqueous solution and sulfur dioxide to react with each other in a pressurized condition. The pressurized cond... | 10/28/2008 |
| 7371357 | Process for removal of pollutants A process for the removal of pollutants from a combustion process and, more particularly, a process for removing pollutants such as carbon dioxide, mercury, sulphur dioxide, nitrogen compounds and oxygen compounds from a combustion process. The process includes the ... | 05/13/2008 |
| 7351391 | System and method for converting the spent remnants of a first pickling acid solution into a usable second pickling acid solution A system and method of economically converting a spent first pickling acid solution that contains hydrochloric acid, water and ferrous chloride into a suitable second pickling solution. Sulfuric acid is added to the first pickling acid solution. This produces a rege... | 04/01/2008 |
| 7252771 | Method and device for decontaminating waters which are loaded with organic halogen compounds (halogenated hydrocarbons) The invention relates to a process and a device for decontaminating waters, especially groundwaters, which are heavily and complexly polluted with organic halogen compounds (HHC), in which process the contaminated waters are pre-treated in order to convert low-volat... | 08/07/2007 |
| 7214290 | Treatment of spent caustic refinery effluents In the methods for treatment of caustic effluents described in the specification, a spent caustic refinery effluent is supplied to a submerged combustion gas evaporator in which hot combustion gas containing carbon dioxide is injected into the caustic liquid to conc... | 05/08/2007 |
| 7144568 | Method and device for carrying out a reaction in liquid medium with gas evolution Described is a process and a device for carrying out a reaction in liquid medium during which evolution of gas occurs. The process can be applied in particular to a reaction employing a peroxide such as hydrogen peroxide and, in particular, to the reduction of chlor... | 12/05/2006 |
| 7060242 | Method for treating waste materials containing halogen In a method for the treatment of halogen containing waste materials wherein valuable materials and/or energy can be recuperated without the generation of additional halogenated waste materials, the halogen containing waste materials are mixed with a molten substitut... | 06/13/2006 |
| 7048777 | Method and apparatus for removing waxy materials from a gas stream The invention uses both heating and cooling zones to prevent the precipitation of solids onto equipment surfaces until they are efficiently removed from the gas phase via one or more heat exchangers. Each heat exchanger may be regenerated to melt off the solids when... | 05/23/2006 |
| 7045109 | Conversion of sodium bromide to anhydrous hydrobromic acid and sodium bisulfate Process for the conversion of sodium bromide to anhydrous hydrobromic acid and sodium bisulfate, said process with the following sequential steps: reaction of sodium bromide and sulfuric acid in a solution of water to produce hydrobromic acid and sodium bisulfate wh... | 05/16/2006 |
| 7021487 | Processing method for high pressure gas container and halogen containing gas filled in said container A metal container to be filled with a halogen containing gas, with the inner surface processed with a polishing agent. The gas has a reduced purity decline by the increase of the water content or impurities from the inner surface of the container which is absorbed b... | 04/04/2006 |
| 7014824 | Method for purifying process waste gases The present invention relates to a method for purifying process waste gases by introducing them into a waste gas purification system that includes a reaction chamber and by post-treating the reaction products that leave the reaction chamber in a washing or sorbtion ... | 03/21/2006 |
| 6994836 | Method of recovering chlorine gas from calcium chloride There is disclosed a method of recovering chlorine gas from calcium chloride comprising the steps of introducing calcium chloride into a heat-resistant vessel which is provided with a gas inlet pipe and a gas outlet pipe, heating the calcium chloride up to at least ... | 02/07/2006 |
| 6969500 | Method for separating titanium tetrachloride The invention relates to a method for separating titanium tetrachloride and the hydrolyzed reaction products of titanium tetrachloride from the exhaust gases generated during the chlorination of raw materials containing titanium by treating the exhaust gases with a ... | 11/29/2005 |
| 6933417 | Process for vinyl chloride manufacture from ethane and ethylene with partial CHl recovery from reactor effluent A process for producing vinyl chloride monomer from ethylene and ethane having input of significant quantities of both ethane and ethylene in input streams to the affiliated reactor where hydrogen chloride in the reactor effluent is only partially recovered from the... | 08/23/2005 |
| 6890508 | Preparation of largely HBr-free HCI gas and largely HBr-free aqueous HCI solution The present invention relates to a process for preparing largely HBr-free HCl gas and largely HBr-free aqueous HCl solution, which comprises the following steps: a) providing HBr-containing HCl gas; b) passing the HBr-containing HCl gas thr... | 05/10/2005 |
| 6811763 | Conversion of sodium bromide to anhydrous hydrobromic acid and sodium bisulfate Process for the conversion of sodium bromide to anhydrous hydrobromic acid and sodium bisulfate, said process with the following sequential steps: reaction of sodium bromide and sulfuric acid in a solution of water to produce hydrobromic acid and sodium bisulfate wh... | 11/02/2004 |
| 6793905 | Method for producing high-purity hydrochloric acid This invention relates to a novel method, which can be carried out according to industrial standards, for producing high-purity hydrochloric acid with a very low particle content, for use in the production of semiconductors. ... | 09/21/2004 |
| 6692719 | Process for regeneration of acid halide solutions A process is disclosed for regenerating an aqueous acid halide leachant from a spent aqueous metal halide leach liquor. The process comprises introducing into a fluidized bed or spray roaster a hydrocarbon fuel, an oxygen-enriched oxidizing gas and the aq... | 02/17/2004 |
| 6676809 | Process for removal of hydrogen fluoride Hydrogen fluoride is effectively removed from a mixture of hydrogen fluoride, dichloromethane, chlorofluoromethane and/or difluoromethane by distilling the mixture so that two-component azeotropic mixtures of hydrogen fluoride and dichloromethane, hydroge... | 01/13/2004 |
| 6540973 | Process for producing hydrogen chloride The process according to the invention comprises bringing gaseous hydrogen chloride in a non-condensable gas into contact with an absorbing medium selected from water or a dilute aqueous hydrogen chloride solution in an absorption column to cause the medi... | 04/01/2003 |
| 6527979 | Catheter systems and methods for their use in the treatment of calcified vascular occlusions Catheter systems and methods for their use in enhancing fluid flow through a vascular site occupied by a vascular occlusion are provided. The subject catheter systems include at least an aspiration catheter and at least one of a total occlusion insert cat... | 03/04/2003 |
| 6482979 | Perfluorinated acid fluorides and preparation thereof A method for the preparation of a perfluorinated acid fluoride (especially 3-alkoxy propionic acid fluoride) is provided. The method results in high yields of the acid fluoride.... | 11/19/2002 |
| 6432374 | Solid chloride absorbent The invention has an object to provide a solid chloride absorbent which can efficiently absorb inorganic chlorides such as hydrogen chloride flowing out from a process in which a heavy naphtha and the like are treated and inorganic chloride derived from c... | 08/13/2002 |
| 6375911 | Method and device for treating exhaust gas A process and an apparatus for treating an exhaust gas, in which a raw gas and high-boiling intermediate products contained in the exhaust gas let out from a CVD system employing a silicon-containing gas is brought into contact with a transition metal suc... | 04/23/2002 |
| 6375909 | Method for the removal of mercury and nitrogen oxides from combustion flue gas The process is by injection of calcium chloride into the combustor and lowering the flue gas temperature in sufficient time to enhance oxidation of mercury and nitrogen oxides into more soluble products prior to their absorption in a wet scrubber. The add... | 04/23/2002 |
| 6375908 | Process and apparatus for recovery of raw materials from wastes residues A process is disclosed for recovering raw materials, in particular heavy metals such as chromium, zinc, copper, lead, or nickel, by separation from waste and residues, wherein a liquid or viscous starting mixture and/or a starting mixture composed of crus... | 04/23/2002 |
| 6365122 | Process for manufacturing potassium sulfate fertilizer and other metal sulfates A new process of preparing potassium sulfate fertilizer and other metal sulfates from the chlorides and other halides of these metals. The process utilizes the discovery that sulfur dioxide or trioxide, when introduced as a fluidizing medium into shallow ... | 04/02/2002 |
| 6224843 | Carbon dioxide purification in ethylene glycol plants A process is provided for production of substantially pure carbon dioxide from a CO2 off-gas stream from an ethylene glycol plant. Water is condensed from an off-gas stream which contains unsaturated hydrocarbons, saturated hydrocarbons, chlori... | 05/01/2001 |
| 6183623 | Electrochemical conversion of anhydrous hydrogen halide to halogen gas using an ionically conducting membrane The invention relates to a process for electrochemically converting anhydrous hydrogen halide, such as hydrogen chloride, hydrogen fluoride, hydrogen bromide and hydrogen iodide, to essentially dry halogen gas, such as chlorine, fluorine, bromine and iodi... | 02/06/2001 |
| 5994604 | Method and apparatus for low temperature destruction of halogenated hydrocarbons A method and apparatus for decomposing halogenated hydrocarbons are provided. The halogenated hydrocarbon is mixed with solvating agents and maintained in a predetermined atmosphere and at a predetermined temperature. The mixture is contacted with recycla... | 11/30/1999 |
| 5908606 | Method for producing hydrogen halide and oxygen The present invention provides a process for producing hydrogen halide and oxygen by a stable chemical reaction for a long time. In this method, hydrogen halide and oxygen are produced by reacting water and halogen as represented with the following formul... | 06/01/1999 |
| 5853690 | Method for decomposing water using an activated carbon catalyst Activated carbon is effective as a catalyst for water decomposition when it is coated with a heat-resistant, oxidation-resistant film. The heat-resistant, oxidation-resistant film is formed from an inorganic material such as ceramic or metal, and/or an or... | 12/29/1998 |
| 5817288 | Process for treating a non-distillable halogenated organic feed stream A process for treating a non-distillable halogenated organic feed stream wherein the feed stream is contacted with a hydrogen-rich gaseous stream at hydrodehalogenation conditions to produce a carbonaceous solid containing a reduced halogen content and hy... | 10/06/1998 |
| 5695732 | Method for treating a halogenated organic waste to produce halogen gas and carbon oxide gas streams A method relates to treating a halogenated organic waste to produce halogen gas and carbon oxide gas streams. The method includes directing a halogenated organic waste, having a halogen-to-hydrogen atomic ratio of less than about one, into a molten metal ... | 12/09/1997 |
| 5693306 | Production process for refined hydrogen iodide A process for producing refined hydrogen iodide having organic components of 0.2 ppm by volume or less and water of 0.1 ppm by volume or less by contacting crude hydrogen iodide with a zeolite is disclosed. Crude hydrogen iodide is obtained by reducing io... | 12/02/1997 |
| 5685169 | Method and apparatus for preparing high purity hydrogen bromide A method and apparatus for preparing high purity hydrogen bromide, wherein a starting hydrogen bromide which contains impurities having low boiling points is supplied to an intermediate space. While the gas phase of the starting hydrogen bromide is allowe... | 11/11/1997 |
| 5640706 | Method and apparatus for producing a product in a regenerator furnace from impure waste containing a non-gasifiable impurity An apparatus and method for producing a product, such as hydrogen halide gas or sulfuric acid, in a regenerator furnace subsystem from a waste containing a non-gasifiable impurity. The method of the invention includes directing a waste, containing a non-g... | 06/17/1997 |
| 5635152 | Acid regeneration Regeneration of hydrochloric acid by hydrolysis of iron chloride in aqueous solution employs a Pelletiser (5) after preconcentration of acid solution in a "Pre-Evaporator" (1). Pelletiser (5) controls pellet mixture to between 12% and 14% free water by re... | 06/03/1997 |
| 5505926 | HCL adsorbent and method for making and using same An HCl adsorbent, and method of making and using the adsorbent, the adsorbent comprising an activated alumina promoted with an alkali metal in an amount such that if calculated as alkali metal oxide, the adsorbent contains at least about 5% by weight alka... | 04/09/1996 |
