Patent application number | Description | Published |
20080236458 | Method and Device for Reducing Polyhalogenated Compounds in Incineration Plants - The invention relates to a method for reducing polyhalogenated compounds in incineration plants comprising at least one combustion chamber. The aim of the invention is to provide a more efficient method. To achieve this, SO | 10-02-2008 |
20090020048 | METHOD FOR REDUCING NITROGEN OXIDE ON THE PRIMARY SIDE IN A TWO-STAGE COMBUSTION PROCESS - Method of reducing the nitrogen oxide formation (NO | 01-22-2009 |
20090190799 | METHOD FOR CHARACTERIZING THE EXHAUST GAS BURN-OFF QUALITY IN COMBUSTION SYSTEMS - A method for characterizing a flue gas burnout quality of a combustion process in a combustion system having a gas burnout zone includes optically detecting in a visible wavelength range, in a flow cross section of the gas burnout zone, low-soot combustion regions, regions without combustion, and sooting regions, so as to provide a plurality of successive individual images, the regions without combustion and the sooting regions having different dynamics. The plurality of successive individual images are analyzed so as to distinguish regions of transition, to the low-soot combustion regions, of the regions without combustion and the sooting regions. | 07-30-2009 |
20090208395 | PROCESS AND APPARATUS FOR REDUCING NITROGEN OXIDES AND HALOGENATED ORGANIC COMPOUNDS IN INCINERATION PLANTS - A process for reducing nitrogen oxides and halogenated organic compounds in an incineration plant having at least one combustion chamber. The process comprises separating out fly ash using a dust collector. Water is added to and hydrochloric acid separated out in a first acid-operated scrubber. Water and ammonia are added so as to separate out sulphur dioxide in a second neutral or slightly acid-operated scrubber so as to form ammonium sulphite, a portion of the ammonium sulphite thereby reacts with oxygen so as to form an aqueous ammonium sulphate/ammonium sulphite solution. The aqueous ammonium sulphate/ammonium sulphite solution is introduced into an oxygen-containing smoke gas downstream of a secondary gas introduction area so as to decompose the ammonium sulphate and ammonium sulphite so as to form ammonia and sulphur dioxide. Ammonia, oxygen and nitrogen oxides are reduced in the smoke gas by selective non-catalytic reduction so as to produce nitrogen and water, the chloride-containing fly ash in the smoke gas reacting with sulphur dioxide, water and oxygen so as to produce sulphates and hydrochloric acid. | 08-20-2009 |
20090301364 | Method for improving the slag quality of grate firing systems - A method for improving a slag quality of slag in, a grate firing system. The method includes providing slag in a grate firing system including a combustion chamber disposed above a combustion bed. The combustion bed has a plurality of fixed-bed burnout zones in series on a combustion grate. The fixed-bed burnout zones include a first series of fixed-bed burnout zones and a second fixed bed burn-out zone disposed downstream of the first series. The first series of fixed-bed burnout zones is traversed with a flow of oxygen-containing gas. A portion of the combustion bed associated with the second fixed bed burn-out zone is traversed with a flow of a hot combustion gas from the combustion chamber. | 12-10-2009 |
20100260654 | METHOD AND DEVICE FOR ENTRAINED-FLOW SULFATION OF FLUE GAS CONSTITUENTS - A method for entrained-flow sulfation of sulfatable flue gas constituents of an oxygen-containing flue gas in an incineration plant having at least one combustion chamber and a waste gas burnout zone includes passing the oxygen-containing flue gas through the waste gas burnout zone. The oxygen-containing flue gas is tempered by lowering a temperature of the oxygen-containing flue gas. The oxygen-containing flue gas is passed through a sufation zone so that the oxygen-containing flue gas has a temperature interval of between 700 and 900° C. during a time period of between 2 and 20 s so as to convert sulfatable flue gas constituents present in the oxygen-containing flue gas to solid sulfate-containing ash particles so as to reduce a halide concentration in ash deposits thereof. | 10-14-2010 |
20100296993 | METHOD FOR THE CLEANING OF OFF-GAS - The present invention relates to a method for cleaning off-gas comprising the following steps: 1. sulphur dioxide is separated from the off-gas by way of at least one first scrubber stage (c) by means of ammonia or ammonium compounds, 2. the off-gas is transferred into a second scrubber stage (d) and 3. in the second scrubber stage the sulphur dioxide not separated in the first scrubber stage (c), is oxidised to sulphuric acid and separated in at least one scrubber (d) and simultaneously, the ammonia released in the first scrubber stage (d) is separated by means of the formed sulphuric acid, whereby ammonium sulphate is formed, 4. the separated stream of the second scrubber stage (d) is transferred into the first scrubber stage (c). | 11-25-2010 |
20120129109 | METHOD AND DEVICE FOR REDUCING HAZARDOUS EMISSIONS IN INTERNAL COMBUSTION SYSTEMS - A method for reducing pollutant emissions uses a two-stage primary combustion process for a solid-containing fuel including a primary furnace having a combustion chamber, a solid fuel burnout zone and a primary flue-gas post combustion chamber, and a separate secondary combustion train. The fuel is burned in the primary combustion chamber while supplying primary gas in a substoichiometric amount so as to form high heating-value gas and low-carbon solid residue. A partial stream of this gas is diverted and the remainder is passed to the post-combustion chamber. The diverted stream is passed to the secondary combustion train, which includes a conditioner, a secondary combustion chamber and an energy recovery device. Energy-spent exhaust gas from the train is recirculated to the furnace upstream of the post-combustion chamber in which it is burned with the remainder of the high heating value gas and an oxygen-containing gas supplied in superstoichiometric amounts. | 05-24-2012 |