Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F22—STEAM GENERATION
  • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
  • F22B37/00—Component parts or details of steam boilers
  • F22B37/008—Adaptations for flue-gas purification in steam generators
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
  • B01D53/34—Chemical or biological purification of waste gases
  • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
  • B01D53/86—Catalytic processes
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L9/00—Disinfection, sterilisation or deodorisation of air
  • A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
  • B01D53/34—Chemical or biological purification of waste gases
  • B01D53/46—Removing components of defined structure
  • B01D53/54—Nitrogen compounds
  • B01D53/56—Nitrogen oxides
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
  • B01D53/34—Chemical or biological purification of waste gases
  • B01D53/46—Removing components of defined structure
  • B01D53/62—Carbon oxides
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
  • B01D53/34—Chemical or biological purification of waste gases
  • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
  • B01D53/86—Catalytic processes
  • B01D53/8621—Removing nitrogen compounds
  • B01D53/8625—Nitrogen oxides
  • B01D53/8631—Processes characterised by a specific device
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
  • B01D53/34—Chemical or biological purification of waste gases
  • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
  • B01D53/86—Catalytic processes
  • B01D53/864—Removing carbon monoxide or hydrocarbons
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
  • B01D53/34—Chemical or biological purification of waste gases
  • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
  • B01D53/86—Catalytic processes
  • B01D53/90—Injecting reactants
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F22—STEAM GENERATION
  • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
  • F22B37/00—Component parts or details of steam boilers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F22—STEAM GENERATION
  • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
  • F22B37/00—Component parts or details of steam boilers
  • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
  • F22B37/04—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler and characterised by material, e.g. use of special steel alloy
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F22—STEAM GENERATION
  • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
  • F22B37/00—Component parts or details of steam boilers
  • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
  • F22B37/10—Water tubes; Accessories therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2255/00—Catalysts
  • B01D2255/20—Metals or compounds thereof
  • B01D2255/207—Transition metals
  • B01D2255/20707—Titanium
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2255/00—Catalysts
  • B01D2255/20—Metals or compounds thereof
  • B01D2255/207—Transition metals
  • B01D2255/20723—Vanadium
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2255/00—Catalysts
  • B01D2255/20—Metals or compounds thereof
  • B01D2255/207—Transition metals
  • B01D2255/20776—Tungsten
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
  • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
  • B01J21/063—Titanium; Oxides or hydroxides thereof
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
  • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
  • B01J23/20—Vanadium, niobium or tantalum
  • B01J23/22—Vanadium
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
  • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
  • B01J23/24—Chromium, molybdenum or tungsten
  • B01J23/30—Tungsten
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J29/00—Catalysts comprising molecular sieves
  • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
  • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
  • B01J37/02—Impregnation, coating or precipitation
  • B01J37/0215—Coating

Definitions

• the invention relates to a steam generator of a technical installation, in particular a power plant, with a heating gas duct enclosed by a gas-tight surrounding wall, wherein the heating gas duct has a number of heating surfaces through which a flow medium can flow.
• the burner gas generated during the combustion of a fossil fuel burner side or flowing out of a gas turbine hot exhaust gas for evaporation of a flow medium in the steam generator is used.
• the steam generator comprises for the evaporation of the flow medium usually to heating surfaces together quantitative summed or bundled steam generator tubes on whose Be ⁇ heating by the radiant heat of the burner flame or by the convective interaction with the heating gas leads to an evaporation of the guided therein flow medium.
• part of the heating surfaces directly forms the gas-tight surrounding wall of the heating gas channel, also referred to as a throttle cable, while another part of the heating surfaces is mounted in the heating gas channel to increase the effectively usable surface and protrudes into it.
• the steam provided by the steam generator can in turn be provided, for example, for a connected external process or else for the drive of a steam turbine. If the steam drives a steam turbine, usually a generator or a working machine is operated via the turbine shaft of the steam turbine. In the case of a generator, the power generated by the generator may be provided for feeding into a composite and / or island grid.
• DeNO x -Katalysatorvoriquesen use which are mounted at a suitable location by means of associated supporting structures in the gas duct of the steam generator, for example, see EP 0753701 Al.
• the nitrogen oxides contained in the passing heating gas are reduced by the injection or injection of an ammonia solution with the assistance of the catalytic material, the reduction products being water (H 2 O) and elemental nitrogen (N 2 ).
• SCR Selective Catalytic Reduction
• the invention is therefore based on the object to provide a steam generator of the type mentioned, which requires a particularly low design and manufacturing effort, and in the particularly reliable cleaning of the Heating gas is ensured before it leaves the steam generator output side.
• This object is inventively achieved in that one of the heating surfaces shalls WE on its face towards the heating gas ⁇ th page at least partially with a catalytic coating loading is provided.
• the invention is based on the consideration that a for a particularly low manufacturing and assembly expenses became a particularly low manufacturing and assembly expenses became a particularly low height - or in horizontal design of the boiler a particularly small length - should have, so that the material requirements and the time required for the completion containment walls and the static requirements are minimized to the support structure associated with ⁇ optionally.
• a particularly compact and simple construction can be achieved by the previously hem as separate components with relatively ho ⁇ need for installation space provided Abgasthesesvorrich- obligations in the already existing and absolutely necessary for the operation of the steam generator heat transfer elements, ie in particular in the from the steam generator tubes formed heating elements and heating surfaces to be integrated.
• a particularly effective and space-saving integration of the cleaning function for the heating gas can be achieved at gleichzei ⁇ tig high cleaning effect by the heating surfaces are not only used for heat transfer, but also as a support for a catalytically active surface coating.
• the coating is expediently chosen such that it causes or at least promotes degradation or transformation of entrained by the contact gas and the interaction with the entrained fuel pollutants, without even being “consumed” or wear down (catalyst principle).
• the support structures for the hitherto customary separate catalyst devices are omitted.
• Heated gas duct of the steam generator arranged that during operation of the steam generator, the staggered due to the injection with the Redukti ⁇ onsffen heating gas flows to the respective catalytically ⁇ coated heating surface.
• the catalytically active coating on the heating surfaces or on the surface of the steam generator tubes forming the respective heating surface serves to initiate and / or maintain a reaction between the reducing agent introduced into the heating gas and the nitrogen oxides of the heating gas ,
• the nitrogen oxides with the aid of the typically injected with air as Trä ⁇ gerstrom in the throttle cable or the heating gas duct reducing agent talysatormaterials reduced by the presence and participation of Ka to nitrogen and water.
• the nitrogen oxide attack in the steam generator is usually dependent on the type of fossil fuel burned and the operation of the steam generator. In order to comply with the legally prescribed limit values as far as possible in all operating states, it is therefore customary to vary the quantity of reducing agent to be injected as a function of the fossil fuel used and of the instantaneous operating parameters.
• Particularly effective catalytic coatings can be realized by recourse to recent findings in nanostructure research.
• a design goal achievable with the help of nanotechnology is, in particular, that the coating material is almost and permanently stable can apply any surface contours of DampfheizerAlbflachen.
• Titanium oxide, vanadium pentoxide or tungsten oxide are used as catalyst materials for the catalysis of nitrogen oxide degradation.
• catalyzers based on Zeolih can be used.
• Ammonium mordenite and H-beta zeolite are to be mentioned as preferred materials in particular.
• the catalytically coated heating surfaces may be partial wall regions of the surrounding wall of the heating gas channel. Additionally or alternatively, heating surfaces or other built-in parts projecting into the heating gas channel may be provided with a catalytic surface coating of the type mentioned. In particular, so-called bulkhead heating surfaces are suitable for this purpose.
• a Schott heating surface is to be understood as meaning a number of steam generator tubes which are connected in parallel and open into a common inlet and a common outlet collector, the steam generator tubes lying close together in one plane and thus forming a number of plate-like heating surfaces that are suspended inside the throttle cable.
• Alterna ⁇ may also be a so-called Rohrbündelmos Design, in which the individual pipes in the Ge ⁇ contrast of the webs are not miteinan ⁇ a bulkhead connected tiv the coated heating surface.
• the total surface available for the catalytic coating is comparatively large.
• previously unachievable reduction rates for the pollutants carried by the heating gas can be achieved, and thus even extremely low emission limits can be reliably and permanently exceeded, without increasing the production costs or the energy efficiency of the steam generator. compromising compromises in its interpretation - z.
• B. un ⁇ favorable temperature profiles, acceptance of Strömungsinstabi ⁇ lities, elaborate lighting concepts and Brennerkonfigu ⁇ rations etc. - would be required.
• the catalytic coated heating surfaces should be arranged in a region of the heating gas channel which ensures a high efficiency of the usually temperature-sensitive catalytic purification process with regard to the usual operating temperatures prevailing therein.
• the respective catalytically coated heating surface At a heating gas denitrogenation by the SCR principle is the respective catalytically coated heating surface, therefore, advantageously disposed in egg ⁇ ner region in which the passing at rated load operation of the steam generator heating gas to a temperature in the interval of about 300 0 C to 400 0 C. has.
• the concept described here can be applied to steam generators of different design and operation, eg. B. with lying or standing boiler and with natural circulation, forced circulation or forced circulation, and with different lighting ⁇ concepts, eg. B. fluidized bed or dry dust firing apply.
• the flow-medium-side connection of the heating surfaces which can comprise, for example, evaporator heating surfaces, superheater heating surfaces and heating surfaces belonging to an economizer or air preheater, can be predetermined almost as desired.
• the more complete par- also for example a gas turbine nachge ⁇ off heat recovery steam generator is suitable for the steam generator comprises a substantially flowed through in the horizontal direction from the fuel gas or the exhaust gas of the gas turbine, also referred to as a horizontal gas heating gas duct with a Number of heating surfaces each provided with a catalytic coating.
• These may in particular be evaporator heating surfaces or economizer heating surfaces in a region of the steam generator in which the passing-through heating gas usually has temperatures of about 300 ° C. to 400 ° C.
• the steam generator is built with an upright boiler in a so-called double-flue configuration and includes a during Betrie bes ⁇ from bottom to top from the heating gas flowing through the first Vertical gas train, the heating gas side is connected via a horizontal gas train with a flowed through from top to bottom second vertical gas train.
• the respective catalytically coated heating surface is preferably in the range of the horizontal gas flue or of the second vertical gas flue or arranged in a this hot gas side downstream portion of the heating gas, wherein depending on vorgese ⁇ hener operating temperature of the catalyst material preferably has a superheater heating surface, may be an economizer heating flat or even an air preheat heating surface.
• FIG. 2 schematically shows a heat recovery steam generator with lying steam boiler in side view
• FIG. 3 shows a plan view of a heating surface of a steam generator formed from steam generator tubes.
• the designed as a continuous steam generator steam generator 2 comprises a number of burners 4 for a fossil fuel.
• the burners 4 are arranged in a combustion chamber 6 which is formed by a lower part of the surrounding wall 8 of a first vertical gas flue 10.
• the Umfas ⁇ sungswand 8 passes at the lower end of the first Verikalgaszuges 10 formed by them in a funnel-shaped bottom 12.
• the steam generator 2 is designed in Zweizugbauart.
• the first vertical gas 10 is for arising from the combustion of fossil fuel heating gas via a Ho ⁇ rizontalgaszug 14, a second vertical gas 16 nachgeschal ⁇ tet.
• a white ⁇ terer horizontally extending throttle cable 18 connects, which finally opens into a chimney or chimney, not shown here.
• the throttle cables 10, 14, 16, 18 together form one
• the Um chargedswand 8 of the first vertical gas flue 10 is constructed of steam generator tubes, not shown, which are gas-tight welded together at their longitudinal sides via webs or so-called fins, and in the Wesentli ⁇ chen helical wind around the cylindrical interior 24 around.
• a plurality of mutually adjacent steam generator tubes for a parallel admission with water as flow medium to a segment of the surrounding wall 8 forming Verdampfer hamperflache 26 summarized.
• the inlet ends of the steam generator tubes forming an evaporator heating surface 26 are connected via a (not shown) provided common inlet collector with pre-warmed by a economizer 28 water.
• a common outlet collector not shown
• the water vapor generated in the steam generator tubes of an evaporator heating surface 26 as a result of the heating by the burners flows through a common outlet collector (not shown) and is subsequently fed to a superheater unit.
• the Verdampfersammlungflachen 26 of the first train 10 Vertikalgas- strömungsmediumss furnish downstream of a number of heating surfaces as Schott ⁇ executed superheater 30, which are arranged primarily in the region of the horizontal gas flue fourteenth
• Each of the predominantly convectionally heated superheater heating surfaces 30 comprises a number of parallel to the flow of the flow medium steam ⁇ generator tubes.
• the steam generator tubes of a superheater heating surface 30 are connected together to form a membrane wall.
• each steam generator tube of the respective superheater heating surface 30 is welded via a web to each adjacent steam generator tube of the same superheater heating surface 30.
• Each of a superheater heating surface 30 supplied ⁇ arranged steam generator tubes are close to each other in a plane arranged horizontally and form so as so-called bulkhead ⁇ each have a plate-like heating surface che.
• the plate-like superheater heating surfaces 30 thus formed are suspended within the horizontal gas flue 14.
• the steam flowing out of the steam generator tubes of the superheater heating surfaces 30 and overheating beyond the evaporation temperature can be used, for example, to drive a steam turbine (not shown here).
• a portion of the superheater 30 may also for intermediate superheating of the effluent from a first turbine stage of the steam turbine, partially relaxing the flow medium are set one, so that the flow medium then it ⁇ neut heated the next stage of the steam turbine is fed.
• the temperature of the heating gas duct 20 in strö ⁇ Menden heating gas flow progresses from continu ously ⁇ .
• the temperature of the fuel gas is still around 300 0 C to 400 0 C. With this content of residual heat is the through
• Pipes of the still flowing and still flowing liquid medium also called feedwater preheater 28, are preheated prior to its entry into the steam generator tubes of the evaporator heating surfaces 26 connected downstream of the economizer on the flow medium side.
• the Economi ⁇ zer 28 comprises a plurality of switched from the flow medium side in each case pa rallel ⁇ tubes 32 Rohrbündelsammlungflä- formed chen, the EconomizerSystemflachen 34 which project into the gas duct 20th
• the base surfaces of the plate-like economizer heating surfaces 34 are aligned parallel to the flow direction of the heating gas, so that a bilateral recirculation of the pipe arrangement can take place.
• the individual tubes 32 themselves are arranged perpendicular to the flow direction of the heating gas in the embodiment shown in FIG.
• the temperature of the hot gas is typically only about 250 0 C to 400 0 C, but this is for a convective heating in the
• the steam generator 2 is in a compact and simple design for effective cleaning and denitrification of the effluent from the Schugaskanal 20 as exhaust gas fuel gas out ⁇ sets.
• the heating surfaces 34 of the economizer 28, ie the tubes 40 carrying the flow medium are connected to their outer side facing the heating gas with a catalytic converter. lysator for the initiation and maintenance of an SCR denitrification reaction effective coating 44 provided.
• titanium oxide or a zeolite material is used as the coating material, which can be applied to the base material of the tube 40 and / or the webs connecting it, if necessary, by a suitable coating method known to the person skilled in the art before the steam generator 2 is assembled leaves.
• the catalyst material reduces the activation energy required for the SCR reaction, in which the nitrogen oxides entrained in the heating gas are reduced to elemental nitrogen and water by an ammonia solution injected into the heating gas stream.
• the injection of ammonia takes place by means of an injection device 46 arranged upstream of the economizer heating surfaces 34 in the heating gas channel 20, which in turn is fed from a reservoir for ammonia water by means of a compressed air device (not shown).
• the nozzles of the injection device 46 are adjusted and aligned in such a way that the best possible mixing of the ammonia-containing liquid mist with the heating gas and the most uniform possible wetting of the catalytically coated economizer heating surfaces 34 streamed from the resulting mixture takes place.
• the heating surfaces 38 of the air preheater 36 are provided with the catalytic coating.
• the injector 46 is disposed in the between the economizer 28 and the air preheater 36 lying portion of the Schugaskanals 20.
• FIG. 2 shows, as a further embodiment, a steam generator 2 x designed as a waste heat steam generator with a horizontal one Water tube boiler, which is connected downstream of a gas turbine, not shown here and is heated by the effluent from the gas turbine exhaust gas.
• the exhaust gas of the gas turbine thereby flows through the x enclosed by the gas-tight containing wall 8 horizontal gas 48 in the direction indicated by directional arrow 50 ⁇ direction.
• the heating gas releases a large part of the heat contained in it by convective heat ⁇ transmission to the surrounding wall 8 x forming Wandsammlung lake or within the Schugaskanals 20 x arranged Rohrbündel carving lake, whereby the guided in the heating surfaces flow medium preheated, evaporated and then overheated.
• Economizerterrorismflachen are corresponding flow medium side in series 34 26 x and superheater 30 x provided ⁇ evaporator heating
• Ver ⁇ dampferrois vomit 26 x still in the heating surfaces of a medium pressure evaporator 52 and a high-pressure evaporator 54 are divided.
• the largely cooled after its heat to the Strö ⁇ tion medium heating gas leaves the steam generator 2 x a designed as a vertical gas fireplace 56.
• the person skilled in diverse variations in configuration and strömungsme- diums furnishen wiring of the heating surfaces common, but to which it is not here in Individual arrives.
• a number of heating surfaces on their side facing the heating gas is at least partially provided with a catalytic surface coating 44, which causes or promotes a reduction of entrained in the fuel gas pollutants.
• a catalytic surface coating 44 which causes or promotes a reduction of entrained in the fuel gas pollutants.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Environmental & Geological Engineering (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Biomedical Technology (AREA)
• Analytical Chemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• General Engineering & Computer Science (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Veterinary Medicine (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Epidemiology (AREA)
• Metallurgy (AREA)
• Materials Engineering (AREA)
• Organic Chemistry (AREA)
• Chimneys And Flues (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
• Catalysts (AREA)
• Exhaust Gas Treatment By Means Of Catalyst (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (2)

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Family Applications (1)

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Cited By (2)

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• 2006
  • 2006-02-16 EP EP06003189A patent/EP1820560A1/de not_active Withdrawn
• 2007
  • 2007-01-03 EP EP07703603A patent/EP1984099A2/de not_active Withdrawn
  • 2007-01-03 WO PCT/EP2007/050030 patent/WO2007093453A2/de not_active Ceased
  • 2007-01-03 US US12/223,992 patent/US20110041783A1/en not_active Abandoned
  • 2007-01-03 KR KR1020087022621A patent/KR20090003233A/ko not_active Ceased
  • 2007-01-03 CN CNA2007800058320A patent/CN101384338A/zh active Pending
  • 2007-01-03 JP JP2008554707A patent/JP2009526964A/ja active Pending
• 2008
  • 2008-08-05 IL IL193249A patent/IL193249A0/en unknown

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