WO1994024486A1 - Procede et installation permettant de bruler des matieres organiques et du charbon pulverise - Google Patents

Procede et installation permettant de bruler des matieres organiques et du charbon pulverise Download PDF

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Publication number
WO1994024486A1
WO1994024486A1 PCT/EP1994/001136 EP9401136W WO9424486A1 WO 1994024486 A1 WO1994024486 A1 WO 1994024486A1 EP 9401136 W EP9401136 W EP 9401136W WO 9424486 A1 WO9424486 A1 WO 9424486A1
Authority
WO
WIPO (PCT)
Prior art keywords
steam boiler
flue gas
combustion
combustion chamber
coal dust
Prior art date
Application number
PCT/EP1994/001136
Other languages
German (de)
English (en)
Inventor
Franz Bauer
Horst Wetzel
Kurt STRÖER
Dieter Koritz
Detlef Witt
Herbert Schulze
Günter MÜLLELLERBUCHHOF
Siegfried Geisler
Klaus Klemprow
Otfried Blossfeld
Karin Grossmann
Matthias Mischke
Thilo Stahn
Original Assignee
Veag Vereinigte Energiewerke Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19934312901 external-priority patent/DE4312901C2/de
Priority claimed from DE19934312897 external-priority patent/DE4312897C1/de
Priority claimed from DE19934312900 external-priority patent/DE4312900C2/de
Priority claimed from DE19934312899 external-priority patent/DE4312899C2/de
Priority claimed from DE19934312902 external-priority patent/DE4312902C2/de
Priority claimed from DE19934320912 external-priority patent/DE4320912C2/de
Priority claimed from DE19934336415 external-priority patent/DE4336415C2/de
Priority claimed from DE19944402130 external-priority patent/DE4402130C1/de
Priority claimed from DE19944402770 external-priority patent/DE4402770A1/de
Priority to AU65678/94A priority Critical patent/AU6567894A/en
Priority to DE59403192T priority patent/DE59403192D1/de
Priority to PL94311160A priority patent/PL311160A1/xx
Priority to EP94913585A priority patent/EP0694148B1/fr
Application filed by Veag Vereinigte Energiewerke Ag filed Critical Veag Vereinigte Energiewerke Ag
Publication of WO1994024486A1 publication Critical patent/WO1994024486A1/fr
Priority to FI954896A priority patent/FI954896A/fi

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/10—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of field or garden waste or biomasses
    • F23G7/105—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of field or garden waste or biomasses of wood waste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00—Removing ash, clinker, or slag from combustion chambers
    • F23J1/02—Apparatus for removing ash, clinker, or slag from ash-pits, e.g. by employing trucks or conveyors, by employing suction devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/10—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in the open air; in pans or tables in rooms; Drying stacks of loose material on floors which may be covered, e.g. by a roof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2206/00—Waste heat recuperation
    • F23G2206/20—Waste heat recuperation using the heat in association with another installation
    • F23G2206/203—Waste heat recuperation using the heat in association with another installation with a power/heat generating installation
    • 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 invention relates to a method and an arrangement for the combustion of biological materials, in particular wood chips, in a coal-fired steam boiler or a fluidized bed furnace.
  • the hot gases generated in the pre-firing are fed into the combustion chamber of the steam boiler.
  • considerable expenses have to be incurred in order to operate the pre-firing> 10 MW for a steam boiler> 50 MW stably and thus to achieve the desired effects.
  • the invention has for its object to integrate the combustion of biological materials directly in a coal-fired steam boiler or a fluidized bed furnace.
  • the organic material is entered as a partial fuel flow and / or the flue gases generated from the drying, degassing and / or combustion of the organic material as a partial flue gas flow in the coal dust mill, flue gas recirculation and / or combustion chamber of the steam boiler, and the combustion products wherein the Unburned as a fuel split stream to the pulverizer, Rauchgasschreibsaugung or combustion chamber of the steam boiler is recycled as a burnt part stream via the flue gas cleaning, and as a Outgoing * fired part stream is discharged via the Na touchtaschungsstrom.
  • a biological agent feeder is integrated into the coal dust mill, flue gas suction and / or combustion chamber and / or into a drying, degassing and / or combustion device on a combustion chamber area of the steam boiler and the wet ash removal system of the steam boiler via an unburned feeder into the coal dust mill, Flue gas recirculation or combustion chamber of the steam boiler integrated.
  • the use of the method for the combustion of biological material in a fluidized bed furnace is such that the biological substance is entered into the fluidized bed furnace as a partial fuel stream and / or the flue gases generated from the drying, degassing and / or combustion of the organic substance are introduced into the fluidized bed furnace as well as the Combustion products are discharged as a burned partial stream via the flue gas cleaning system and the unburned product is returned to the fluidized bed furnace as a partial fuel stream.
  • Fig. 1 The integration of the biological drying and degassing in the steam boiler system in principle
  • Fig. 2 The arrangement of the drying, degassing and combustion chambers provided with the burn-out grate on the combustion chamber end wall of the steam boiler in principle
  • Fig. 3 The arrangement in a side view
  • Fig. 5 The principle diagram of the circulation process on the coal-fired steam boiler
  • Fig. 7 The power plant with several steam boilers and a wet ash system
  • Fig. 8 The steam boiler system with direct return of the wet ash
  • Fig. 9 The structure of the flow and buffer arrangement in principle
  • Fig. 12 The principle of the arrangement of the pusher in the wood chip pile
  • Fig. 13 The arrangement of the stationary pusher with lateral removal in a schematic representation
  • the steam boiler 1 has the flue gas recirculation 2 and the grinding system 3 with a dust line 4 and burner 5 (FIG. 1).
  • the raw coal shaft 6 and distributor 7 and the biological material shaft 8 with storage container 9 and distributor belt 10 are located on the flue gas return suction 2.
  • the distributor 11 with the connecting duct 12 and / or the gas duct 13 is arranged below the flue gas return duct 23.
  • the flue gas return chute 23 opens into the grinding system 3 and classifier 14 and / or into the additional grinding system 15 with classifier 16. Between the additional grinding system 15 and grinding system 3 there is channel 1 7, and / or the additional grinding system 15 has the dust shaft 18 with burner 19 or Blowing device 20 in the region of the end wall 21 of the combustion chamber 22.
  • the flue gas return duct 23 has the walling and the drying and degassing duct, the gas pipes with the openings, the central pipe with the opening slots or the partition with the gas openings.
  • the mode of operation consists in that hot flue gases 32 are sucked out of the combustion chamber 22 via the flue gas recirculation 2 from the grinding system 3 and / or additional grinding system 15 (FIG. 1).
  • Raw lignite 33 is fed into the flue gas return duct 23 via the allocation device 7.
  • Biological substances 34 are allocated at the same time as the coal flow.
  • the organic substances 34 are allocated directly into the flue gas return 2 or into the drying and degassing shaft, which is surrounded by the hot gases 32 on all sides.
  • the organic materials 34 are heated and degassed or partially burned.
  • the resulting gases 35 pass through the connecting duct 12 and / or with the degassed and / or partially burned bio-substances 36 via the distributor 11 (FIG.
  • the bio-materials 36 prepared in this way are in the grinding system 3 milled as raw materials with the raw lignite 48 and fed to the burners 5 as a dust stream 37 via classifier 14 and dust channel 4.
  • the processed biological substances 36 are supplied to the auxiliary grinding plant 15 via the connecting duct 12 with the hot gas duct 49 via the gas duct 13.
  • the processed biological substances 36 are finely ground and introduced as a biological substance-dust mixture 38 via the channel 17 into the dust line 4 and / or via the dust shaft 18 into the burner 19.
  • the biological substance-dust mixture 38 is burned in the flame 41 and / or blown into the dust flame 42 and burned via the blowing device 20 as a dust jet 47.
  • the biological substances 34 are passed around the gas pipes through which flue gases flow.
  • Hot gas partial flows 43 are conducted into the biological substances 34 via the openings 27.
  • the stored organic substances 34 are thermally processed, made grindable and introduced into the grinding plant 3 and / or additional grinding plant 15.
  • the back-sucked flue gases 32 flow through the central tube and the hot gas partial flows are fed to the biological substances 34 via the opening slots.
  • the hot gas partial flows are introduced into the biological substances 34 via the gas openings in the partition.
  • ERSATZBL TT (REGEL26) It is also possible for the resulting gases 35 to be fed directly to the grinding plant 3 via the gas duct 13 during the processing of the biological substances 34 and the processed biological substances 36 via the distributor 11 and the connecting duct 12 to the additional grinding plant 15 (FIG. 1).
  • the steam boiler 1 with the combustion chamber 2, the ash funnel 3 and the pipe 4 has the coal dust mill 5 (FIG. 2).
  • the coal dust mill 5 consists of the flue gas recirculation 6, the coal feed 7 of the coal dust line 8 and the coal dust burners 9.
  • the fan 10 is connected to the burners 9 and the hot air box 13 via the hot air duct 11 and the combustion air line 12.
  • the blowing device 15 for the biological substances 34 is arranged on the side and / or above the openings 14 for the flue gas recirculation 6 and is connected to the comminution device 16 (Hownsler, shredder), integrated hot air duct 17 and transport line 18.
  • the burnout chamber 20 consisting of the pipe system of the tubing 22, is arranged (FIG. 3).
  • the burnout chamber 20 has the sieve grate 23, the passage grille 21 and the air nozzles 26 with line 27 and control flaps 28.
  • the mode of action is as follows:
  • Hot flue gases 29 are sucked in by the coal dust mill 5 via the flue gas return suction 6 and, together with the coal 30, are fed to the coal dust burners 9 as a coal dust / flue gas mixture 31 after grinding via the coal dust line 8.
  • the hard-to-burn portions 40 of the biological materials 34 fall onto the surface of the grate 23, burn out there further and, after extensive burn-out, fall in front of the openings 14 of the flue gas re-suction 6.
  • the flue gases 29 which are sucked in and pass through the grille 21 as re-suction gas 25 into the lower part 41 the Ausbrandka mer 20 are sucked, carry the unburned portions of the biological substances 42 in the coal dust mill 5.
  • these difficult to burn parts 42 are ground, processed and blown into the combustion chamber 2 via the coal dust burner 3.
  • a tipping or moving grating can be arranged as grating 23 without further notice.
  • As a biological material 34 B. also use compressed flammable materials such as straw.
  • the shaft with a lock is arranged in the side wall inside or outside the steam boiler 1.
  • the shaft is designed as a treatment-degassing shaft and consists of the membrane wall, which is designed as a passage grille 21 in the upper part.
  • the shaft is connected to the hot air duct 11 via the line 27.
  • the burnout grate and / or shredder is arranged in the lower part of the shaft.
  • the duct, distributor and the blowing mill are connected to the burnout grate.
  • the burner is connected to the blowing mill via the line.
  • the burner has a line with a control flap.
  • the channels are optionally provided for the direct integration of the channel and / or shaft into the steam boiler 1.
  • the steam boiler 1 has the coal dust grinding system 2, the oil burner system 3, the scraper belts 4, the main air supply line 5, the ash funnel 6, the coal dust burner 16 and the combustion chamber 20 (FIG. 4). Directly next to the steam boiler 1, the pre-firing 7 with burner 30 and combustion chamber 12 is arranged.
  • the pre-firing 7 is connected to the bunker 9 (storage space) via the distributor 11 and the transport system 10.
  • the pre-firing 7 has the oil burner 26, which is connected to the oil burner system 3 via the supply line 27.
  • the burner 30 has the air box 31, which is connected to the main air supply line 5 via the air duct 32 and control device 14.
  • the main air supply line 5 is integrated in the secondary heating surfaces 33 of the steam boiler 1 and connected to the fresh air fan 15.
  • the combustion air line 34 leading to the coal dust burners 16 with hot air flaps 17 is integrated into the main air supply line 5.
  • the pre-firing 7 is integrated into the ash funnel 6 of the combustion chamber 20 via the hot gas line 19 and connected to the wet ash disposal 25 via the ash line 23.
  • the pre-firing is optionally to be provided with the heating surfaces 28, which are integrated into the heating surface system of the steam boiler 1 or a heat consumer.
  • the pre-firing 7 is included in the safety emergency circuit 35 of the steam boiler 1.
  • the mode of action is as follows:
  • the supply of the biological materials 8 to the pre-firing 7 takes place from the bunker 9 via the transport device 10 and the distributor 11 to the burner 30 and into the combustion chamber 12.
  • the required combustion air 13 is taken from the hot air duct 5 via the air duct 32 and according to the need by the control device 14 controlled.
  • the fresh fan 15 is fully extended and the air quantity control of the coal dust burner 16 is carried out via the hot air flaps 17.
  • a maximum hot air pressure in the hot air duct 5 is achieved.
  • the hot gases 18 generated from the organic material combustion are passed via the hot gas line 19 into the ash funnel 6 of the steam boiler 1 at a negative pressure of approximately 20 kPa.
  • the negative pressure in the area of the ash funnels 6 of the combustion chamber 20 supports the discharge of the hot gases 18 from the pre-firing 7.
  • the introduced hot gases 18 raise the temperature level in the combustion chamber 20 by maintaining hot gas vortices 21, mix with the combustion gases 22 from the dust firing and ensure good heat transfer to the boiler heating surfaces of the ash funnels 6.
  • the hot gases introduced with the 02 content of> 10% ensure the oxidation of CO to CO2 •
  • This technology of blowing in far below the main firing of the steam boiler 1 acts like burnout air in a safe thermal temperature range, which reduces the CO content.
  • the main firing with the coal dust-conveying gas mixture 29 is thus operated with a slight excess of air ⁇ 1.3, so that the NO x formation is lower.
  • the ash 24 from the organic material combustion is fed to the wet ash disposal 25 and / or the grinding plant 2 via the ash line 23.
  • the oil burner 26 is arranged in order to ensure a constant burning of the bio-substances 8 in the pre-firing 7. Heat release of the hot gases 18 is made possible via the heating surfaces 28.
  • the organic material combustion can be operated intermittently or in terms of thermal output from minimum load to maximum load. Due to the introduction of the hot gases 18, the use of the disposal facilities 25 and the constant provision of hot air, a wide range of performance in the combustion of organic matter is ensured.
  • the oil burner 26 with vapor pressure atomization in a power range of 2 to 5 MW can be implemented thermally and the hot gas re-suction from the combustion chamber. This eliminates the need for a separate oil supply.
  • the biofuel combustion in the pre-firing 7 has a maximum thermal output of approx. 60 MW, which corresponds to 20% of the firing output of the steam boiler 1 at full load (100 MW el.), And in part-load operation (70 MW el Max. 40 MW to operate thermally. With this range of services, the maintenance of the boiler control of the pulverized coal firing of the steam boiler 1 is ensured. It is not necessary or sensible to connect the boiler control to the pre-firing 7 for biofuel combustion, it complicates the entire system without any noteworthy advantages. In order to meet the switch-off conditions in the event of a malfunction, the pre-firing 7 is to be included in the safety emergency circuit 35. H. Switching off the oil burner 26 and interrupting the supply of the biological substances 8.
  • a separate emission measurement technology for the biofuel combustion in the pre-firing 7 is not necessary.
  • the authorities are billed using the emission measurement technology of steam boiler 1.
  • the steam boiler 1 with the flue gas recirculation 2, the grinding system 3 and the coal dust burners 4 has the ash funnel 5 and the wet ash removal system 6 (FIG. 5).
  • the transport device 9 is integrated between the wet ash removal system 6 and the flue gas return suction 2. Immediately after the wet ash removal system 6, the separation system 10 is integrated.
  • the organic material transport system 11 with the distributor 12 and organic material storage 13 is arranged in front of the grinding plant 3.
  • the troughs 9.1; 9.2 of the wet ash removal system 6 of the steam boiler has the scraper chain 14 which runs with the upper run 15 in the water bath 16 and with the lower run 17 in the dry.
  • the trough cheeks 18.1; 18.2 have the overflow 19. At the overflow 19 are the gutters 20.1; 20.2 connected, which open into the trough 21.
  • the trough 21 has the sieve plate 22 and the water guide plate 23.
  • the discharge device 35 with the cups 24 is inside the trough 21.
  • the cups 24 are designed as sieves.
  • Via the transport device 25 there is a connection between the discharge device 35 and the flue gas return 2 of the grinding system 3.
  • the outlet channel 26 of the trough 21 has the suction line 27 with the pump 28.
  • the pressure line 29 with the shut-off and / or control device 30 opens into the jet apparatus 31.
  • the mode of action is as follows;
  • Raw lignite 36 is fed to the grinding plant 3 via the flue gas return 2 (FIG. 5).
  • the grinding plant 3 is mixed continuously and / or discontinuously with biological substances 37 via the transport system 11, allocator 12 and biological substance storage 13.
  • the coal-bio-dust mixture 39 is blown into the combustion chamber 40 of the steam boiler via the dust line 38 and coal dust burner 4. Due to the poor grindability of the biological substances 37 in the grinding plant 3, some of the biological substances 37 precipitate as unburned 41 in the combustion chamber 40 via the ash funnel 5. These light portions of the unburned 41 float on the surface of the water bath 16 of the wet-ash plant 9 (FIG. 6).
  • the unburned 41 is conducted into the overflow 19 with the aid of the jet apparatus 31 and / or guide devices.
  • the water-unburned mixture 42 slides over the sieve plate 22 arranged in the trough 21, and the water 44 flows off.
  • the unburned 41 is discharged by means of the discharge device 35 with its cup 24 with constant drainage.
  • the unburned 41 reaches the flue gas return line 2 of the grinding plant 3 via the connection piece 43.
  • the water 44 that runs off is fed again to the jet apparatus 31, controlled by means of the control device 30, by means of the pump 28 via the pressure line 29.
  • the water loss is constantly caused by fresh water 45 via line 33; 34 filled up.
  • the power plant has the deep coal bunker 1 and the deep coal bunker 2 (FIG. 7).
  • the deep coal bunker 1 with bunker pockets 27 has the track systems 3.1; 3.2 on.
  • the transport system 4 exists between deep coal bunker 1 and deep coal bunker 2.
  • Boiler 5.1; 5.2; 5.3 have the electrostatic precipitators 6.1; 6.2; 6.3, the wet ash conveyor system 7 and ' the dry ash conveyor system 8.
  • the transport system 10 exists between the wet ash belt system 7 and the wet ash bunker 9.
  • the wet ash bunker 9 has the track system 11, which is connected to the track system 3.2.
  • the dry ash transport system 8 is connected to the dry ash bunker 12.
  • the track system 13 is located below the dry ash bunker 12.
  • the transport system 17 from the wet ash removal system 29 is integrated in the boiler 5 between the combustion chamber 15 and the grinding system 16 (FIG. 8).
  • the allocation device 18 exists between the coal bunker 2 and the flue gas recirculation 19 of the grinding plant 16.
  • the funnel 30 of the combustion chamber 15 and the funnel 31 of the flue gas train 32 are integrated in the wet ash plant 29 via line 33.
  • the boiler 5 has the burners 20 with the dust channel 21.
  • the mode of action is as follows:
  • the raw coal 22 is over the track system 3.1; 3.2 transported to the deep coal bunker 1.
  • the pre-broken coal 23 is introduced into the coal bunker 2 via the transport system 4 (FIG. 7).
  • the raw coal 23 is allocated to the grinding plant 16 via coal bunker 2 and allocation device 18 according to the power requirement (FIG. 8).
  • the coal 23 is ground in the grinding plant 16 and fed to the burners 20 as a coal dust / carrier gas mixture 14 via the dust channel 21.
  • the coarse ash and the unburned 24 from the funnels 30; 31 are collected as wet ash 25 via the wet ash belt system 7, transport system 10 into the wet ash bunker 9.
  • the wet ash 25 is continuously and / or discontinuously layered, tilted and / or stored in separate bunker pockets 27 by means of a track wagon 26 via the track system 11 onto the stored raw coal 22 in the deep coal bunker 1.
  • the separately collected wet ash 25 is mixed with the pre-broken coal 23 from the bunker pockets 27.
  • the wet ash lies on the coal 23 and absorbs the moisture.
  • Coal 23 and wet ash 25 re-enter the grinding plant 16 in accordance with the transport routes.
  • the coarse ash produced by the combustion is added to the flue gas as an additive to the combustion and / or fine ash to the flue gas path. This ensures that the SO x -free biofuel combustion eliminates part of the SO x emissions otherwise produced by coal combustion (dilution effect) and is used to bind the SO x from the coal combustion due to the alkalis and alkaline earths released from the biofuel. This reduces the SO x emissions according to the general relationship as follows:
  • the sulfur emission is reduced by 17.8%.
  • desulphurization can be achieved within the permissible limit values.
  • the inactive parts of the coarse pockets e.g. B. slag
  • fine ash e.g. B. sand
  • wood chips are burned as a mixed fuel with lignite in the furnace of the coal-fired power plant.
  • Wood chips composition Needles ⁇ 5% bark ⁇ 15%
  • Wood chips size 5 mm to 40 mm (including an unquantified
  • the wood chips are in the power plant on the prepared concrete surface 1 z. B. by means of a crane's grab from a minimal height as a loose heap 3 (FIG. 9).
  • the heap 3 Due to the quantity to be filled up (approx. 75 tons), the heap 3 results with the basic dimensions of 12 m length and 8 m width. A canopy is not necessary in normal weather conditions. Is to be expected with very heavy rainfall, a cover of the pile 3, z. B. with a special film.
  • the heap 3 thus constructed represents the continuous and buffer arrangement through which the dynamic storage and
  • the heap 3 remains after the construction of the continuous and
  • the water contained in the chips is evaporated and the water vapor is introduced into the cavities of the heap 3 through which the cooler ambient air flows released into the environment.
  • the reduction in the water content in the heap 3 is linked to the material flows which occur due to the temperature differences of the heap 3 to the ambient air and lead to a change in the wood moisture in the direction of the migration movement (drainage) of the warm moist air.
  • the temperature measuring point 3 is arranged, which is connected via line 4 to the temperature measuring and / or registering device 5. They are too
  • the temperature measuring point 3 in the center of the pile is replaced by a moisture measuring point and connected to a moisture measuring and / or registering device.
  • the wood chips are then transported to the furnace and burned there.
  • the thrust device 3 has the thrust element
  • the thrust element 6 is wedge-shaped
  • the portal device 11 is designed as an oscillating hydraulic drive.
  • the portal device 11 is arranged in the longitudinal direction to form the pile 2 (FIG. 13).
  • the portal device 11 has the movable support 12 which receives the thrust element 6.
  • the thrust element 6 also has the wedge-shaped parts 13; 14 on.
  • the drive 4 is a mobile device, e.g. B. a tractor, can be trained to ensure the section feed movement (direction of travel).
  • the mode of action is as follows:
  • the thrust element 6 With the drive 4, the thrust element 6 is set in oscillating movements and the dry wood chips material located in the interior of the pile 2 to the conveyor
  • This conveying process is realized with the shield-shaped part 9 of the thrust element 6.
  • the thrust element 6 returns to the starting position, so that again in the area of Thrust device 3 reaching dry wood chips is detected.
  • the removal with the portal device 11 (FIG. 13) takes place in sections within the pile 2.
  • the wedge-shaped parts 13; 14 of the thrust element 3 ensures that propulsion of the thrust element 3 is possible within the pile.
  • the dry wood chips material is fed via the conveyor 5 for firing z. B. promoted for a coal-fired steam boiler.
  • the moist wood chip material located in the apex area and in the embankment areas of the heap 2 is only included in the conveying process to a small extent. This moist material remains on the base plate 1 at the end of the conveying process and forms the basis for a new pile to be built.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Molecular Biology (AREA)
  • Biotechnology (AREA)
  • Biomedical Technology (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Fertilizers (AREA)
  • Processing Of Solid Wastes (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

La combustion des matières organiques est intégrée au processus opérationnel de la chaudière ou à celui du foyer à lit fluidisé. La matière organique (34) est introduite sous forme de courant partiel combustible, ou bien les gaz de fumée résultant du séchage, du dégazage ou de la combustion de la matière organique sont introduits sous forme de courant partiel de gaz de fumée dans le pulvérisateur de charbon (15), dans le système de recirculation des gaz de fumée ou dans la chambre de combustion (22) de la chaudière (1). Les produits de combustion sont extraits sous forme de courant partiel brûlé, par l'intermédiaire de l'installation de dépoussiérage des gaz de fumée et sous forme de courant partiel non brûlé par l'intermédiaire de l'installation d'évacuation des cendres à l'état humide. La matière non consumée est ramenée sous forme de courant partiel combustible dans le pulvérisateur de charbon, dans le système de recirculation des gaz de fumée ou dans la chambre de combustion ou bien dans la grille de brûlage de la chaudière.
PCT/EP1994/001136 1993-04-16 1994-04-13 Procede et installation permettant de bruler des matieres organiques et du charbon pulverise WO1994024486A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP94913585A EP0694148B1 (fr) 1993-04-16 1994-04-13 Procede et installation permettant de bruler des matieres organiques et du charbon pulverise
PL94311160A PL311160A1 (en) 1993-04-16 1994-04-13 Method of and system for combusting organic substances and coal dust
DE59403192T DE59403192D1 (de) 1993-04-16 1994-04-13 Verfahren und anlage zur verbrennung von biostoffen und kohlenstaub
AU65678/94A AU6567894A (en) 1993-04-16 1994-04-13 Process and installation for burning organic materials and coal dust
FI954896A FI954896A (fi) 1993-04-16 1995-10-13 Menetelmä ja laite bioaineiden, erityisesti hakkeen polttamiseksi hiilipölylämmitetyssä höyrykattilassa tai pyörrekerrospolttolaitoksessa

Applications Claiming Priority (18)

Application Number Priority Date Filing Date Title
DEP4312900.5 1993-04-16
DE19934312901 DE4312901C2 (de) 1993-04-16 1993-04-16 Verfahren und Anordnung zur Verbrennung von Biostoffen für einen kohlenstaubgefeuerten Dampfkessel
DEP4312897.1 1993-04-16
DE19934312902 DE4312902C2 (de) 1993-04-16 1993-04-16 Verfahren und Anordnung zur Verbrennung von Biostoffen, insbesondere Hackschnitzel, in einem kohlenstaubgefeuerten Dampfkessel
DEP4312901.3 1993-04-16
DEP4312902.1 1993-04-16
DEP4312899.8 1993-04-16
DE19934312899 DE4312899C2 (de) 1993-04-16 1993-04-16 Verfahren und Anordnung zum vollständigen Abbrand von in einem kohlenstaubgefeuerten Dampfkessel zu verbrennenden Biostoffen, insbesondere Holzhackschnitzel
DE19934312900 DE4312900C2 (de) 1993-04-16 1993-04-16 Verfahren und Anordnung zum Betrieb einer Vorfeuerung mit Biostoff-Verbrennung für einen kohlenstaubgefeuerten Dampfkessel
DE19934312897 DE4312897C1 (de) 1993-04-16 1993-04-16 Verfahren und Anordnung zur Verbrennung von Unverbranntem aus dem Verbrennungsprozeß eines kohlenstaub- und/oder biostoffgefeuerten Dampfkessels
DEP4320912.2 1993-06-18
DE19934320912 DE4320912C2 (de) 1993-06-18 1993-06-18 Verfahren zur Verringerung der SO¶x¶-Emission bei der Verbrennung von schwefelhaltiger Kohle
DEP4336415.2 1993-10-21
DE19934336415 DE4336415C2 (de) 1993-10-21 1993-10-21 Verfahren zur Trocknung von Holzhackschnitzeln aus Nadelholz, insbesondere aus Kiefernholz
DEP4402130.5 1994-01-21
DE19944402130 DE4402130C1 (de) 1994-01-21 1994-01-21 Verfahren und Vorrichtung zum Abfördern eines Biomasse-Haufwerkes, insbesondere eines Holzhackschnitzel-Haufwerkes
DE19944402770 DE4402770A1 (de) 1994-01-26 1994-01-26 Verfahren zur Ermittlung des Trocknungszustandes eines locker gelagerten Hackschnitzel-Haufwerkes, insbesondere eines Nadelholzhackschnitzel-Haufwerkes
DEP4402770.2 1994-01-27

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WO1994024486A1 true WO1994024486A1 (fr) 1994-10-27

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PCT/EP1994/001136 WO1994024486A1 (fr) 1993-04-16 1994-04-13 Procede et installation permettant de bruler des matieres organiques et du charbon pulverise

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EP (1) EP0694148B1 (fr)
AT (1) ATE154685T1 (fr)
AU (1) AU6567894A (fr)
DE (1) DE59403192D1 (fr)
DK (1) DK0694148T3 (fr)
FI (1) FI954896A (fr)
PL (1) PL311160A1 (fr)
WO (1) WO1994024486A1 (fr)

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WO2001025689A1 (fr) * 1999-09-23 2001-04-12 Fortum Engineering Oy Procede de combustion d'un biocombustible dans un four utilisant un combustible fossile
EP1588097A2 (fr) * 2003-01-22 2005-10-26 Joel Vatsky Systeme de bruleur et procede permettant de melanger plusieurs combustibles solides
CZ301071B6 (cs) * 2007-08-17 2009-10-29 Ptácek@Milan Zpusob energetického využívání biomasy s nízkou teplotou tavení popele a palivové smesi získané podle tohoto zpusobu
CN103528079A (zh) * 2013-09-26 2014-01-22 欧萨斯能源环境设备(南京)有限公司 锅炉除灰设备
CN108954285A (zh) * 2018-09-13 2018-12-07 中国电子系统技术有限公司 一种生物质水冷振动炉排锅炉负荷的自动控制策略及方法

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DE102012019928A1 (de) 2012-10-11 2014-04-30 Rwe Power Aktiengesellschaft Verfahren zum Betrieb eines Dampferzeugers

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001025689A1 (fr) * 1999-09-23 2001-04-12 Fortum Engineering Oy Procede de combustion d'un biocombustible dans un four utilisant un combustible fossile
CZ303811B6 (cs) * 1999-09-23 2013-05-15 Fortum Oyj Zpusob pro spalování biologického paliva v kotli spalujícím fosilní palivo jako hlavní palivo
EP1588097A2 (fr) * 2003-01-22 2005-10-26 Joel Vatsky Systeme de bruleur et procede permettant de melanger plusieurs combustibles solides
EP1588097A4 (fr) * 2003-01-22 2010-01-06 Joel Vatsky Systeme de bruleur et procede permettant de melanger plusieurs combustibles solides
CZ301071B6 (cs) * 2007-08-17 2009-10-29 Ptácek@Milan Zpusob energetického využívání biomasy s nízkou teplotou tavení popele a palivové smesi získané podle tohoto zpusobu
CN103528079A (zh) * 2013-09-26 2014-01-22 欧萨斯能源环境设备(南京)有限公司 锅炉除灰设备
CN103528079B (zh) * 2013-09-26 2016-02-17 欧萨斯能源环境设备(南京)有限公司 锅炉除灰设备
CN108954285A (zh) * 2018-09-13 2018-12-07 中国电子系统技术有限公司 一种生物质水冷振动炉排锅炉负荷的自动控制策略及方法

Also Published As

Publication number Publication date
DK0694148T3 (da) 1997-07-21
ATE154685T1 (de) 1997-07-15
FI954896A (fi) 1995-10-16
FI954896A0 (fi) 1995-10-13
PL311160A1 (en) 1996-02-05
DE59403192D1 (de) 1997-07-24
AU6567894A (en) 1994-11-08
EP0694148B1 (fr) 1997-06-18
EP0694148A1 (fr) 1996-01-31

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