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Method and device for pollution reduction from exhausts emissionsRelated Patent Categories: Furnaces, With Exhaust Gas Treatment Means, Means Separating Particles From Exhaust GasMethod and device for pollution reduction from exhausts emissions description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060011112, Method and device for pollution reduction from exhausts emissions. Brief Patent Description - Full Patent Description - Patent Application Claims
FIELD OF THE INVENTION [0001] The disclosed invention relates to a method, an apparatus designed accordingly, to reduce and/or eliminate polluting exhaust components from combustion thermal-generator emissions. [0002] The method and apparatus are intended to be used to reduce and/or eliminate polluting exhaust components from combustion thermal-generator emissions comprising at least a combustion chamber and at least an fixed exhaust duct, the duct be used to direct exhaust from inside volume to outside volume of said combustion chamber. BACKGROUND OF THE INVENTION [0003] One of the major problems nowadays in highly populated towns and cities is air pollution. [0004] Air pollution is both to substances mixed with air and to substances that modify air natural components. All these substances are commonly named pollutants. Thus we have to pollutants families: direct pollutants and indirect pollutants. [0005] Direct pollutants are typically divided in gaseous pollutant and solid pollutants. As example some direct pollutants are those substances able to modify air oxygen turning it from its bi-atomic molecular state to a modified tri-atomic state (named ozone). This behaviour was originated by exhaust emissions. [0006] In order to reduce pollution and its related damages, the inventors identified pollution sources and thus proper technological intervention for each of the sources was addressed. All of the pollution sources are those that emits gaseous and solid particles in air, they are vehicles, buildings and industrial plants. [0007] The solutions used to reduce the pollutants released in air, their effects on health are different according to type of pollution source, type of pollutant and historical period. [0008] At the beginning the attention was towards the reduction of some pollutants from industrial plants, see as example patent U.S. Pat. No. 5,879,645 that discloses a catalyst and related method to reduce nitrogen oxides from industrial emissions. With emissions they refer principally to combustion exhausts. [0009] Consequently similar solution was applied to a different field such as vehicles, specifically cars, trucks etc. [0010] Effectively, in patent U.S. Pat. No. 5,879,645 a catalyst and related method are applied according to the same scheme to vehicles exhaust. The introduction of catalyzed mufflers allowed reducing drastically pollutants from vehicles. [0011] Nevertheless, is was observed that all these solutions able to reduce pollutants and emissions from industrial plants and internal combustion vehicles are not enough to reduce pollution especially in big cities. [0012] As we anticipated at the beginning it is necessary to reduce pollutants from buildings, too. Residential density contributes substantially to polluting emissions in air mainly due to heating systems and to hot water production systems installed in residential buildings and offices. [0013] Emission reduction is thus mainly related to the reduction of pollutants directly at the source through the introduction of dedicated devices. In order to have a clear advantage it is necessary to install such pollution reducing system on the most of vehicles and residential buildings. [0014] Nowadays most developed countries have regulations that forces automobile producers to sell cars with emission reduction devices to meet specific reduction targets. The mean automobile age made it possible to had the most of circulation cars, which did not adopt such devices, substituted by new existing low emission ones. Unfortunately the residential building situation is different; mean residential building age is so long compared to automobile one that it is not possible to imagine, even in case of regulation similar to automotive field, a fast substitution of the existing device with new ones with low emission profiles. In such case the solutions devoted to residential buildings should be: easy to install on existing plants, have a low cost profile in order not to have a great economical impact on building owners, last for a period comparable to the mean maintenance period and timing of buildings. The mean forecasted lasting time for obsolete components is an important parameter; this time is considerably great in civil field compared to automotive field, indeed are more interesting low impact and revamping solution compared to complete new ones that requires reconstructions. [0015] Each Country issues safety and health regulations related to plant safety especially in case of fire or explosion. In an industrial plant, a catalytic device demands for an high temperature thermal regime. The high temperature is reached by burning gas, gasoline, diesel fuel or others. In a civil building the required modifications for such a device are often incompatible with typology of existing rooms or requires modifications of the environment to satisfy fire and safety regulations especially of explosion-proof regulation in case of gas. [0016] Devices to improve air quality are known for closed environments, such devices suck air from outside changing chemically and mechanically their properties, and pumping inside buildings or in vehicles. [0017] Devices for reducing the pollutants in exhaust gases, of the type described in the following patents are likewise known. [0018] Document DE 19824204 discloses a method and a device for reducing pollutants in exhaust gases produced by combustion in a heater for a house or a dwelling. More particularly the device comprises a combustion chamber, a fixed exhaust duct, means for regulating the pressure of exhaust gases passing through the duct, an air pressure jet system linked to a compressor and a ventilator, and means for separating gaseous pollutants (a noble metal three-way catalyst). The catalyst is, if needed, set to a temperature sufficient for decomposition by a heating element that heats the exhaust gas. The catalyst causes, due to its flow resistance, a pressure loss which is compensated for by the ventilator. [0019] Document DE 19627028 discloses a method and a device for reducing pollutants in exhaust gases produced by combustion in a heater for a house or dwelling. The device comprises a combustion chamber (not shown), a fixed exhaust duct, a ventilator for regulating the pressure of exhaust gases passing through the duct, a ceramic filter for separating particulate pollutants, and an oxidation catalyst for removing gaseous pollutants, which, due to its flow resistance, is able to generate a pressure increase in the duct when the exhaust gas is passing through the catalyst. The catalyst is heated by the exhaust gases to a temperature which is sufficient to decompose the gaseous pollutants. All three units can be positioned at any point in the duct. [0020] Both the apparatus for reducing pollutants described in the two abovementioned German patents have the drawback, which is common to many solutions of the known type, that they are directly arranged on the duct for discharging the exhaust gases. This results in the drawback that it is required to decommission the heat generator in the case where maintenance of the apparatus is required. [0021] These known apparatus, moreover, do not treat adequately the particles in particular of uncombusted products which are released by the heat generator during the repeated lighting operations. [0022] Consequently the catalysts of the apparatus of the known type are not sufficiently protected against the particles which may be deposited and burn on them in particular during the start-up transients of the combustion heat generator. Continue reading about Method and device for pollution reduction from exhausts emissions... Full patent description for Method and device for pollution reduction from exhausts emissions Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Method and device for pollution reduction from exhausts emissions patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. 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