| Patent application number | Description | Published |
|---|
| 20090053121 | CATALYST FOR OXIDIZING MERCURY METAL, EXHAUST GAS PURIFYING CATALYST COMPRISING CATALYST FOR OXIDIZING MERCURY METAL, AND METHOD FOR PRODUCING SAME - A catalyst mainly containing silicon oxide and vanadium oxide and having an Si/V atomic ratio within the range from 99.5/0.5 to 85/15 is obtained by gelatinizing a liquid mixture of a colloidal silica and a vanadium compound in advance, then mixing the thus-obtained slurry by heating, and finally drying and/or firing the resulting mixture. As a catalyst for oxidizing mercury metal, this catalyst is brought into contact with an exhaust gas containing mercury metal, thereby oxidizing mercury metal. | 02-26-2009 |
| 20090246111 | EXHAUST GAS PURIFICATION CATALYST AND METHOD FOR PRODUCTION THEREOF - The invention realizes a catalyst which is hardly deteriorated even when volatile catalyst-poisoning compounds such as P and As are accumulated and which can reduce the rate of oxidation of SO | 10-01-2009 |
| 20090311155 | CATALYST FOR OXIDATION OF METAL MERCURY - A catalyst is provided having higher mercury oxidation performance than a conventional catalyst without increasing catalyst quantity or enhancing SO | 12-17-2009 |
| 20100000410 | APPARATUS FOR REMOVING OF TRACE OF TOXIC SUBSTANCE FROM EXHAUST GAS AND METHOD OF OPERATING THE SAME - An apparatus for removing of traces of toxic substances from exhaust gas, comprising, disposed in sequence from the upstream side in a flow channel of exhaust gas emitted from combustion equipment, a denitration unit including a denitration catalyst layer capable of removing nitrogen oxides from the exhaust gas and capable of oxidizing metallic mercury; an air preheater adapted for heat exchange between air for combustion in the combustion equipment and the exhaust gas; a dust removal unit having a bag filter containing a catalyst for metallic mercury oxidation; and a desulfurization unit for removing sulfur oxide from the exhaust gas. The bag filter may be disposed in advance of the desulfurization unit. Thus, there can be provided an apparatus for removing of traces of toxic substances from exhaust gas that is stable over a prolonged period of time and is highly reliable; and provided a method of operating the same. | 01-07-2010 |
| 20100069231 | BASE FOR CATALYST, CATALYST AND METHODS FOR PRODUCING THOSE - The present invention provides a catalyst base material and a catalyst which have high strength, high porosity or high activity and methods of producing the catalyst base material and catalyst. The present invention relates to a method of producing a catalyst base material, the method comprising dispersing or dissolving a hydrophilic polymer coagulant as a first component, a water-soluble thickener as a second component, a colloidal inorganic binder as a third component and an inorganic fiber as a fourth component in water to form a catalytic slurry or paste, supporting the catalytic slurry or paste on a net-like substrate such that the meshes of the net-like substrate are filled up with the slurry or paste, by drying and/or calcinating the substrate. | 03-18-2010 |
| 20100093517 | METHOD OF REGENERATING USED CATALYST - [Problem] Provided is a method for regenerating a catalyst, the method decreasing the SO | 04-15-2010 |
| 20100183492 | EXHAUST GAS PURIFYING CATALYST - To overcome the problem of a conventional catalyst and to provide an exhaust gas purifying catalyst that meets the requirement concerning Hg oxidation activity and SO | 07-22-2010 |
| 20110116999 | EXHAUST GAS PURIFICATION CATALYST ON WHICH INFLUENCE OF IRON COMPOUND HAS BEEN SUPPRESSED - An exhaust gas purification catalyst is provided which contains titanium oxide as a main component and an oxide of one element or two or more elements selected from the group consisting of tungsten (W), molybdenum (Mo), and vanadium (V) as an active component, wherein the exhaust gas purification catalyst contains phosphoric acid or a water soluble phosphoric acid compound so that the atomic ratio of phosphorus (P) to a catalytically active component represented by the following formula is more than 0 and 1.0 or less; | 05-19-2011 |
| 20110165043 | METHOD FOR PURIFYING EXHAUST GAS CONTAINING MERCURY METAL, OXIDATION CATALYST FOR MERCURY METAL IN EXHAUST GAS AND METHOD FOR PRODUCING THE SAME - Provided are a catalyst for removing mercury metal, which has high activity for a long time even in an exhaust gas containing SO | 07-07-2011 |
| 20110183839 | CATALYST FOR CLEANING UP NITROGEN OXIDES AND A METHOD FOR PRODUCING SAME - Provided is a silver-supported alumina catalyst for reducing nitrogen oxides using ethanol, which has the drawbacks of the conventional silver-supported alumina catalysts improved, has high performance, is not likely to deteriorate over time, and has excellent initial performance and durability. | 07-28-2011 |
| 20110189069 | EXHAUST GAS PURIFICATION CATALYST AND METHOD FOR PRODUCTION THEREOF - The invention realizes a catalyst which is hardly deteriorated even when volatile catalyst-poisoning compounds such as P and As are accumulated and which can reduce the rate of oxidation of SO | 08-04-2011 |
| 20110268638 | METHOD OF MERCURY REMOVAL FROM COMBUSTION EXHAUST GAS AND COMBUSTION EXHAUST GAS PURIFICATION APPARATUS - A method for removing mercury in a combustion exhaust gas includes injecting ammonia or urea as a reducing agent into a combustion exhaust gas containing nitrogen oxides, sulfur dioxide, metallic mercury, and hydrogen halides, and then introducing the combustion exhaust gas to a denitration apparatus filled with a denitration catalyst to cause a denitration reaction and oxidize the metallic mercury to produce mercury halide; and introducing the combustion exhaust gas through an air preheater and an electric dust collector to a wet desulfurization apparatus, thereby removing sulfur dioxides and the mercury halide, wherein the ammonia concentration of the combustion exhaust gas at an exit of the denitration apparatus is maintained at 5 ppm or higher, and the mercury halide is adsorbed or precipitated onto combustion ash and collected by the electric dust collector to discharge the mercury halide out of a system. | 11-03-2011 |
