US3223074A - Method and boiler plant for combustion of fuels - Google Patents

Method and boiler plant for combustion of fuels Download PDF

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Publication number
US3223074A
US3223074A US433438A US43343865A US3223074A US 3223074 A US3223074 A US 3223074A US 433438 A US433438 A US 433438A US 43343865 A US43343865 A US 43343865A US 3223074 A US3223074 A US 3223074A
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United States
Prior art keywords
boiler
fuel
combustion
flue gas
burning
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Expired - Lifetime
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US433438A
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English (en)
Inventor
Tanner Richard
Perl Karl
Bauer Hans
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Von Roll AG
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Von Roll AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/46—Water heaters having plural combustion chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus
    • F22B31/04—Heat supply by installation of two or more combustion apparatus, e.g. of separate combustion apparatus for the boiler and the superheater respectively
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus
    • F22B31/04—Heat supply by installation of two or more combustion apparatus, e.g. of separate combustion apparatus for the boiler and the superheater respectively
    • F22B31/045—Steam generators specially adapted for burning refuse
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C1/00—Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air
    • F23C1/02—Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air lump and liquid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/46—Recuperation of heat
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/12—Heat utilisation in combustion or incineration of waste

Definitions

  • the present invention broadly has reference to fuelburning equipment and, more specifically, relates to an improved method and boiler installation for the combustion of fuels, particularly for the combustion of different fuel grades.
  • Boiler furnaces must be accommodated in their construction to the peculiarities of the fuel to be burned, more specifically stated, to the nature, calorific value, the combustion behaviour of such fuel, as well as to the resulting or residue products of combustion. Boiler constructions have been obtained which, strictly speaking, only ensure optimum combustion requirements for a specific fuel. When a different fuel is employed which basically differs from a fuel for which the boiler construction was designed, then it is no longer possible to expect the same economical and technical combustion results.
  • the burning of garbage or refuse results in a disproportionally increased complication of the furnace corresponding to the dimensions of the apparatus, and causes a troublesome contamination of the flue gases as well as the heat-absorbing or heating surfaces due to the entrained fly ash or flue dust.
  • the high-grade fuel quantity burned as a supplementary firing cannot be fully taken advantage of because of the maximum attainable combustion chamber temperatures and superheating temperatures.
  • a primary object of the present invention is to provide an improved boiler plant by means of which it is possible to burn two basically different fuels with a high degree of efiiciency, whereby the aforementioned disadvantages are obviated.
  • the boiler plant according to the present invention is manifested in that two separated furnaces are provided, wherein the paths provided for the flue gases are completely separated within the boiler.
  • the method of burning different fuels in a boiler installation according to the invention comprises the steps of burning different fuels in separate combustion chambers of said boiler installation, then conducting the flue gases emanating from each "ice fuel through a separate flow path in said boiler installation, without mixing of said flue gases in said boiler installation.
  • Another improtant object of the present invention is the provision of an improved method and apparatus of the type described providing for an efiicient over-all reliability and operating economy.
  • Another important object of the present invention is the provision of an improved boiler plant capable of burning different fuels at increased operating economy and reliability.
  • Still a further important object of the present invention is to provide an improved method and steam-generating equipment for the eflicient combustion of different types of fuel, while substantially providing for a minimization of slag deposits or otherwise on the heat-absorbing surfaces.
  • Yet another object of the present invention is to provide improved steam-generating equipment with means for the burning of different fuels, permitting of a saving of accessory equipment, particularly dust removal equipment.
  • the boiler installation B comprises a gastight casing or housing 20 internally provided with an impermeable partition wall 21 dividing the interior of such casing 20 into two separate combustion chambers 22 and 23 respectively, for the concurrent firing of two different fuels.
  • reference numeral 1 indicates the inlet for the introduction of a low-grade fuel, such as refuse or garbage, into the combustion chamber 22 for the lowgrade fuel
  • reference numeral 8 indicates the infeed means for the introduction of the high-grade fuel, such as oil, gas or soft coal, for instance, into the other combustion chamber 23 for the high-grade fuel.
  • the lowgrade fuel arrives at location 1 in the form of a fuel bed or layer '1" upon a gas permeable grate 2, the arrow 3 schematically indicating the location of infeed of the air necessary for combustion.
  • This low-grade fuel burns and the gaseous products of combustion thereby developed move along the flue gas path indicated by arrow 4, leaving the boiler installation B at the location designated by reference character 5.
  • a first heating system of the steam generator means of the boiler B In the flue gas path 1, 4, 5 for the gaseous products of combustion resulting from burning of the low-grade fuel there is located a first heating system of the steam generator means of the boiler B.
  • This first heating system provides a pre-heater boiler section, generally designated by reference character P, which comprises the boiler heating surfaces 24 disposed between the headers 10 and 11 and the further heating surfaces 25 extending between the headers 12 and -13.
  • the heating surfaces 24 define a pre-heater or economizer and communicate 'with the heating surfaces 25 defining a first stage evaporator, as well as with the heating surfaces 26 and 27, to be considered shortly, which are located in the combustion chamber 23 for the high-grade fuel.
  • the boiler water is delivered through header 10, in countercurrentflow to the direction of flow of the flue gases resulting from combustion of the different grade fuels in the respective combustion compartments 22 and 23, to flow successively through the various heating surfaces 24, 25, 26 and 27.
  • the high-grade fuel introduced by means of a suitable burner 8 draws the necessary combustion air at such burner, arriving for combustion at the separate combustion chamber or compartment 23.
  • the products of combustion, i.e. flue gases follow the path indicated by the arrows 28 within the combustion chamber 23 and leave the boiler B at the location designated 7".
  • a further heating system forming part of the boiler steam generator means, and which is connected with the previously considered heating system disposed in the combustion chamber 22 for the low-grade fuel, is located in the combustion chamber 23 for the high-grade fuel.
  • This heating system provides a superheating boiler section S which incorporates the interconnected heating surfaces 26 and 27 arranged between the headers 14, 15 and 16, 17 respectively.
  • the boiler water flows through the heating surfaces 24, 25, 26 and 27 in countercurrent to the flow of the respective flue gases.
  • the heating surfaces 24, 25, 26 and 27 represent the partial heating surfaces of the boiler B. More precisely, while as indicated the heating surfaces 24 provide a pre-heater and heating surfaces 25 the first stage evaporator, the heating surfaces 26 define a second stage evaporator and the heating surfaces 27 the superheater.
  • the supplied water is pre-heated, in known manner, to the saturation temperature corresponding to the operating pressure of the boiler.
  • the first stage evaporator 25 there occurs partial evaporation of the water, which is then completed at the second stage evaporator 26.
  • the steam is brought up to the necessary terminal temperature.
  • the individual heating surfaces are formed from a plurality of parallelly disposed banks of tubes of suitable form and construction, and that also at least one boiler steam drum is connected after the secondary stage evaporator 26 or also between the first stage evaporator 25 and the second stage evaporator 26.
  • at least one boiler steam drum is connected after the secondary stage evaporator 26 or also between the first stage evaporator 25 and the second stage evaporator 26.
  • such boiler drum has been omitted and, of course, in reality all of the heating surfaces, i.e. those between headers 13 and 14 are also located within the boiler housing or casing B.
  • the heating surfaces 24, 25 which are subjected to less load are arranged in the path of the flue gases emanating from the combustion of the low-grade fuel, namely the refuse, whereby the term less load is intended to signify the condition that in these tubes heat transmission takes place at lower temperatures and lower temperature drops. This is compatible with the lower temperatures and heat delivery possibilities for the flue gases emanating from the combustion of refuse.
  • the unavoidable soiling of the heating surfaces by the flue dust particles or otherwise entrained by the flue gases, indicated at 9, is much less dangerous and also can be correspondingly tolerated by virtue of the lower heat load or thermal stress of the heating surfaces 24, 25 of the pre-heater boiler section P.
  • the heating surfaces 26 of the second stage evaporator and the heating surfaces 27 of the superheater are subjected to a considerably greater thermal stress or heat load, and indeed, by the higher temperatures conditional upon the high superheating temperature of the vapor as well as by the larger temperature drop required by the prevailing temperature transmission requirements. This means that in this region, i.e. the
  • the gases must exhibit a greater temperature and a greater capacity for giving off heat, achieved in that these heating surfaces 26, 27 which have higher demands placed upon them, are arranged in the path of flow of the flue gases emanating from the combustion of the high-grade fuel.
  • the gases 9 leaving the boiler B at the exit location 5 and resulting from the burning of the low-grade fuel are then cleaned according to a known process, that is, freed of the entrained dust particles.
  • cleaning of this gas can take place, by way of example, with the schematically illustrated cyclone 6.
  • the now clean gas 7' then flows out of the gas cleaning apparatus 6 and combines with the likewise clean gas appearing at location 7" and escaping from the combustion chamber 23 for the high-grade fuel.
  • the commingled flue gas stream is then delivered to the surrounding or ambient atmosphere at location 18 via a suction ventilator 7. More specifically, this can take place through the agency of a non-illustrated stack, ditfusor or equivalent structure.
  • a method of burning different grades of fuel in a boiler installation incorporating a steam generator provided with at least two operatively interconnected heating systems, one of which defines only a pre-heater boiler section and the other only a superheating boiler section comprising the steps of concurrently burning the different grades of fuel in separate combustion chambers of said boiler installation, conducting the respective streams of flue gas emanating from each fuel thus burned through a separate flow path in said boiler installation without mixing of said flue gases in said boiler installation, the stream of fiue gas emanating from burning the low-grade fuel being conducted in heat-exchange relationship past the pre-heater boiler section and the stream of flue gas emanating from burning the high-grade fuel being conducted in heat-exchange relationship past the superheating boiler section, and re-combining said respective streams of flue gas externally of said boiler installation.
  • a method of burning different fuels in a boiler installation incorporating a steam generator provided with at least two operatively interconnected heating systems, one of which defines only a pre-heater boiler section and the other only a superheating boiler section comprising the steps of concurrently burning different fuels in separate combustion chambers of said boiler installation, conducting the respective streams of flue gases emanating from each fuel through a separate flow path in said boiler installation without mixing of said flue gases in said boiler installation, the stream of flue gas emanating from burning the low-grade fuel being conducted in heat-exchange relationship past the pre-heater boiler section and the stream of flue gas emanating from burning the high-grade fuel being conducted in heat-exchange relationship past the superheating boiler section, and removing dust from the flue gas stream of higher dust content, then re-combining said flue gas stream from which dust has been removed with the remaining flue gas stream.
  • a method of burning different fuels in a boiler installation incorporating a steam generator provided with at least two operatively interconnected heating systems, one of which defines only a pre-heater boiler section and the other only a superheating boiler section, particularly a high-grade fuel which after combustion generates a flue gas stream of relatively low dust content and a low-grade fuel which after combustion generates a flue gas stream of relatively high dust content, comprising the steps of: concurrently burning said different fuels in separate combustion chambers of said boiler installation, then conducting the respective flue gas streams emanating from each fuel through a separate flow path through said boiler installation without commingling of said respective flue gas streams, the stream of flue gas emanating from burning the low-grade fuel being conducted in heat-exchange relationship past the pre-heater boiler section and the stream of flue gas emanating from burning the high-grade fuel being conducted in heat-exchange relationship past the superheating boiler section, thereafter cleaning said flue gas stream of relatively high dust content, and then commingling the cleaned flue gas stream
  • a boiler plant for the combustion of two fuels basically different as regards their nature, calorific value and combustion conditions, including two separate combustion chambers for the concurrent firing of the two different grade fuels, means defining within said boiler plant completely separate flow paths for the respective flue gases emanating from each combustion chamber in order to prevent commingling of said respective flue gases within said boiler plant, steam generator means provided with at least two operatively communicating heating systems, one of which defines only a pre-heater boiler section and the other of which defines only a superheating boiler section, said pre-heater boiler section including a pre-heater and a first stage evaporator and being disposed in heat-exchange relation in the flow path for the flue gases emanating from firing of the low-grade fuel, said superheating boiler section including a second stage evaporator and a superheater and being disposed in heat-exchange relation in the flow path for the flue gases emanating from firing of the high-grade fuel.
  • a boiler plant according to claim 5 including channel means for leading away the respective flue gases from said boiler plant, said channel means being so constructed that commingling of said respective flue gases occurs outside of said boiler plant at a location at which both said flue gases possess approximately the same temperature.
  • a common boiler installation for the combustion of at least two different fuels including a separate combustion chamber for each fuel, said fuels being concurrently fired, means defining within said boiler installation completely separate flow paths for the respective flue gases emanating from each combustion chamber, so that commingling of said flue gases within said boiler installation is prevented, steam generator means provided with at least two operatively communicating heating systems, one of which defines only a pre-heater boiler section and the other of which defines only a superheating boiler section, said pro-heater boiler section being disposed in heatexchange relation in the flow path for the flue gases emanating from firing of the low-grade fuel, said superheating boiler section being disposed in heat-exchange relation in the flow path for the flue gases emanating from firing of the high-grade fuel.
  • a boiler plant for the combustion of tWo fuels basically different as regards their nature, calorific value and combustion conditions, including two separate combustion chambers for the concurrent firing of the two different fuels, means defining within said boiler plant completely separate flow paths for the respective flue gases emanating from each combustion chamber, steam generator means provided with at least two operatively communicating heating systems, one of which defines only a pro-heater boiler section and the other of which defines only a superheating boiler section, said pro-heated boiler section being disposed in heat-exchange relation in the flow path for the flue gases emanating from firing of the low-grade fuel, said superheating boiler section being disposed in heat-exchange relation in the flow path for the flue gases emanating from firing of the high-grade fuel, gas cleaning means arranged in the flow path of one of said flue gases, said gas cleaning means being a dust removal device only associated with the flue gas emanating from combustion of the low-grade fuel.
  • a boiler plant for the combustion of two fuels basically different as regards their nature, calorific value and combustion conditions, one of said fuels being a solid low-grade fuel and the other a high-grade fuel, the combination of: two completely separate combustion chamhere within the boiler plant for the concurrent firing of the two different fuels, one of said combustion chambers including a combustion grate for the burning of the solid low grade fuel, means defining within said boiler plant completely separate flow paths for the respective flue gases emanating from each combustion chamber in order to prevent commingling of said respective flue gases during their residence time in the boiler plant, steam generator means provided with at least two operatively communicating heating systems, one of which defines only a pro-heater boiler section incorporating a preheater and a first stage evaporator and the other of which only defines a superheating boiler section incorporating a second stage evaporator and a superheater, said preheater boiler section being disposed in heat-exchange relation in the flow path for the flue gases emanating from firing of the

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
US433438A 1962-01-29 1965-02-17 Method and boiler plant for combustion of fuels Expired - Lifetime US3223074A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH106062A CH390444A (de) 1962-01-29 1962-01-29 Kesselanlage

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US433438A Expired - Lifetime US3223074A (en) 1962-01-29 1965-02-17 Method and boiler plant for combustion of fuels

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US (1) US3223074A (enExample)
CH (1) CH390444A (enExample)
DE (1) DE1236705B (enExample)
DK (1) DK103140C (enExample)
GB (1) GB1004256A (enExample)
LU (1) LU43080A1 (enExample)
SE (1) SE310531B (enExample)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4050387A (en) * 1975-03-18 1977-09-27 Von Roll Ag Fluid industrial waste incinerator and its method of operation
US4140067A (en) * 1977-10-27 1979-02-20 T. Jensen Associates Inc. Furnace control system
US4206723A (en) * 1976-07-08 1980-06-10 Interliz Anstalt Double-fired heating boiler
US4269125A (en) * 1979-07-27 1981-05-26 Combustion Engineering, Inc. Pulverizer rejects disposal
US4296712A (en) * 1979-04-03 1981-10-27 Hoval Interliz Ag Two-chamber boiler for burner firing and solid fuel firing
US4296711A (en) * 1979-04-10 1981-10-27 Eabvv Utvecklings Aktiebolag Heating boiler
US4367697A (en) * 1979-03-13 1983-01-11 Karl Ackerman Multi-zone boiler for firing with solid and liquid fuel
US4422410A (en) * 1980-04-22 1983-12-27 Coal Industry (Patents) Limited Domestic combustion appliances
US4461243A (en) * 1981-02-04 1984-07-24 Officine Meccaniche Carbofuel S.P.A. Steam or hot water generator operating by solid fuels having high contents in volatile materials
US20110139094A1 (en) * 2008-06-12 2011-06-16 Brueckner Jan Method for operating a continuous flow steam generator

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1289938B (de) * 1966-03-26 1969-02-27 Duerrwerke Ag Mit einem kohlenstaubbeheizten Dampferzeuger fuer hoechste Druecke und Temperaturen kombinierte Muellverbrennungsanlage
DE2943000A1 (de) * 1979-10-24 1981-05-07 Okal-Werk Niedersachsen Otto Kreibaum Gmbh & Co Kg, 3216 Salzhemmendorf Heizkesselanordnung
DE3444049A1 (de) * 1984-12-03 1986-06-26 Martin GmbH für Umwelt- und Energietechnik, 8000 München Dampf- oder heisswasserkessel
US4647392A (en) * 1985-12-27 1987-03-03 Texaco Inc. Monobasic-dibasic acid/salt antifreeze corrosion inhibitor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557569A (en) * 1948-02-14 1951-06-19 Stone & Webster Eng Corp Pyrolysis furnace
US2781746A (en) * 1952-10-17 1957-02-19 Combustion Eng Art of generating and heating steam
US2800116A (en) * 1954-10-20 1957-07-23 Babcock & Wilcox Co Steam generating and superheating unit with recycled gas flow
US2863424A (en) * 1955-11-30 1958-12-09 Babcock & Wilcox Co Steam generating, superheating and reheating unit with dual furnaces and parallel gas passes
US2867195A (en) * 1955-05-09 1959-01-06 Babcock & Wilcox Co Apparatus for the recovery of heat and chemicals
US2891519A (en) * 1957-10-17 1959-06-23 Joseph F Ross Combined incinerator and water heater construction
US3048154A (en) * 1960-07-01 1962-08-07 Babcock & Wilcox Co Apparatus for superheating vapor

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CH170559A (de) * 1932-08-19 1934-07-15 De Services Publics S A Union Kessel mit Beheizung durch eine Hauptfeuerung und Abgase.
CH212161A (de) * 1937-06-08 1940-11-15 Frenger Gunnar Anlage zur Durchführung dieses Verfahrens.en Brennstoffen unter Anwendung von zwei Feuerungen, von welchen die eine zur Verbrennung minderwertiger Brennstoffe und die andere zur Verbrennung hochwertiger Brennstoffe eingerichtet ist, sowie
GB534281A (en) * 1938-09-22 1941-03-04 Babcock & Wilcox Ltd Improvements in or relating to tubulous boilers with vapour heaters
DE974912C (de) * 1950-11-12 1961-05-31 Babcock & Wilcox Dampfkessel W Dampfkesselfeuerung
DE1120062B (de) * 1951-11-19 1961-12-21 Babcock & Wilcox Dampfkessel Dampfkesselfeuerung
DE1086382B (de) * 1957-06-08 1960-08-04 Vorkauf Heinrich Dampferzeuger-Feuerungsanlage mit getrennten Feuerraeumen fuer zwei verschiedene Brennstoffe

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557569A (en) * 1948-02-14 1951-06-19 Stone & Webster Eng Corp Pyrolysis furnace
US2781746A (en) * 1952-10-17 1957-02-19 Combustion Eng Art of generating and heating steam
US2800116A (en) * 1954-10-20 1957-07-23 Babcock & Wilcox Co Steam generating and superheating unit with recycled gas flow
US2867195A (en) * 1955-05-09 1959-01-06 Babcock & Wilcox Co Apparatus for the recovery of heat and chemicals
US2863424A (en) * 1955-11-30 1958-12-09 Babcock & Wilcox Co Steam generating, superheating and reheating unit with dual furnaces and parallel gas passes
US2891519A (en) * 1957-10-17 1959-06-23 Joseph F Ross Combined incinerator and water heater construction
US3048154A (en) * 1960-07-01 1962-08-07 Babcock & Wilcox Co Apparatus for superheating vapor

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4050387A (en) * 1975-03-18 1977-09-27 Von Roll Ag Fluid industrial waste incinerator and its method of operation
US4206723A (en) * 1976-07-08 1980-06-10 Interliz Anstalt Double-fired heating boiler
US4140067A (en) * 1977-10-27 1979-02-20 T. Jensen Associates Inc. Furnace control system
US4367697A (en) * 1979-03-13 1983-01-11 Karl Ackerman Multi-zone boiler for firing with solid and liquid fuel
US4296712A (en) * 1979-04-03 1981-10-27 Hoval Interliz Ag Two-chamber boiler for burner firing and solid fuel firing
US4296711A (en) * 1979-04-10 1981-10-27 Eabvv Utvecklings Aktiebolag Heating boiler
US4269125A (en) * 1979-07-27 1981-05-26 Combustion Engineering, Inc. Pulverizer rejects disposal
US4422410A (en) * 1980-04-22 1983-12-27 Coal Industry (Patents) Limited Domestic combustion appliances
US4461243A (en) * 1981-02-04 1984-07-24 Officine Meccaniche Carbofuel S.P.A. Steam or hot water generator operating by solid fuels having high contents in volatile materials
US20110139094A1 (en) * 2008-06-12 2011-06-16 Brueckner Jan Method for operating a continuous flow steam generator
US9291345B2 (en) * 2008-06-12 2016-03-22 Siemens Aktiengesellschaft Method for operating a continuous flow steam generator

Also Published As

Publication number Publication date
DK103140C (da) 1965-11-22
CH390444A (de) 1965-04-15
LU43080A1 (enExample) 1963-03-26
GB1004256A (en) 1965-09-15
DE1236705B (de) 1967-03-16
SE310531B (enExample) 1969-05-05

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