WO2010057712A2 - Ensemble d'alimentation en combustible sous-produit - Google Patents

Ensemble d'alimentation en combustible sous-produit Download PDF

Info

Publication number
WO2010057712A2
WO2010057712A2 PCT/EP2009/062855 EP2009062855W WO2010057712A2 WO 2010057712 A2 WO2010057712 A2 WO 2010057712A2 EP 2009062855 W EP2009062855 W EP 2009062855W WO 2010057712 A2 WO2010057712 A2 WO 2010057712A2
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
product
conveyer
hopper
product fuel
Prior art date
Application number
PCT/EP2009/062855
Other languages
English (en)
Other versions
WO2010057712A3 (fr
Inventor
John O'connor
James Powis
Original Assignee
Biomass Heating Solutions Limited
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
Application filed by Biomass Heating Solutions Limited filed Critical Biomass Heating Solutions Limited
Publication of WO2010057712A2 publication Critical patent/WO2010057712A2/fr
Publication of WO2010057712A3 publication Critical patent/WO2010057712A3/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
    • F23J3/023—Cleaning furnace tubes; Cleaning flues or chimneys cleaning the fireside of watertubes in boilers
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G18/00—Cultivation of mushrooms
    • A01G18/20—Culture media, e.g. compost
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G18/00—Cultivation of mushrooms
    • A01G18/40—Cultivation of spawn
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G18/00—Cultivation of mushrooms
    • A01G18/70—Harvesting
    • 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 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/18—Details; Accessories
    • F23C10/24—Devices for removal of material from the bed
    • 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
    • F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised bed
    • 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

  • This invention relates to a by-product fuel delivery assembly.
  • the present invention relates to an assembly for delivering by-product fuel to a fluidised bed boiler of an energy conversion system.
  • Fluidised bed units are used in fluidised bed boilers. Fluidised bed units are capable of thermally treating by-product fuels that are normally difficult to thermally treat using other technologies, in a very efficient manner. Fluidised bed units also have low emission rates of Nitrous Oxide (N 2 O), Sulfur Oxide (SO x ) and Carbon Dioxide (CO 2 ) which is beneficial to the environment. Fluidised bed units can be used with an associated heat exchanger to provide a fluidised bed boiler which is used to heat a liquid, typically water, or a gas which is then stored for subsequent use.
  • N 2 O Nitrous Oxide
  • SO x Sulfur Oxide
  • CO 2 Carbon Dioxide
  • the conditions for efficient combustion within the fluidised bed unit are sensitive and it can be difficult to maintain the fragile conditions without a steady and sufficient supply of by-product fuel into the fluidised bed unit. Too little by-product fuel will cause the fluidised bed unit to combust the by-product fuel in non-optimal conditions, leading to inefficient operation of the fluidised bed unit. Often, an auxiliary combustion unit has to be employed in these conditions which is undesirable. Similarly, too much by-product fuel also causes the fluidised bed unit to combust the by-product fuel in non-optimal conditions, again leading to inefficient operation of the fluidised bed unit resulting in emission problems and possibly a complete shut down of the entire system.
  • the present invention is directed to a by-product fuel delivery assembly for delivering by-product fuel to a fluidised bed unit, the by-product fuel delivery assembly comprising a fuel hopper, a fuel conveyer and a fuel metering device, wherein, the fuel hopper comprises a substantially planar base having side walls, a front wall and a back wall projecting upwardly from the base; the front wall comprising a discharge slot substantially adjacent the planer base; the by-product fuel delivery system further comprising an actuator located external the fuel hopper to operate a by-product fuel feed mechanism located internal the fuel hopper; wherein, the fuel hopper comprises a plurality of laterally arranged stop bars that are mounted on the base of the fuel hopper; and, intermediate the plurality of stop bars, the by-product fuel feed mechanism comprises a plurality of laterally arranged push bars that lie over the base of the fuel hopper; whereby, in operation, the laterally arranged push bars of the byproduct fuel feed mechanism are moved in a reciprocating fashion in a longitudinal direction of the
  • the advantage of providing a by-product fuel feed mechanism that comprises a plurality of laterally arranged push bars and a plurality of laterally arranged stop bars is that the by-product fuel in the hopper may be relatively easily feed from the fuel hopper onward to the energy conversion system.
  • the push bars and stop bars co-operate to feed by-product fuel sitting on the base of the fuel hopper along the base of the fuel hopper towards the discharge slot of the fuel hopper.
  • This reciprocating movement can be relatively easily implemented by an actuating means such as a pneumatic ram, a hydraulic ram, or the like, and therefore provides a simple, effective, low-cost and low maintenance solution to the problem of feeding by-product fuel from the fuel hopper.
  • an actuating means such as a pneumatic ram, a hydraulic ram, or the like, and therefore provides a simple, effective, low-cost and low maintenance solution to the problem of feeding by-product fuel from the fuel hopper.
  • a problem with fuel hoppers is that the by-product fuel within the hopper can become compacted if the by-product fuel has been sitting in the fuel hopper for an extended period of time due to the weight of the by-product fuel at the top of the fuel hopper acting down on the by-product fuel beneath it.
  • the by-product fuel becomes difficult to break up and thus difficult to deliver to the fluidised bed unit. This is particularly true for by-product fuel that has a high moisture content, wherein, the problem is exacerbated.
  • Existing methods and apparatus for breaking up compacted by-product fuel are felt to be high energy users and are also complicated.
  • the arrangement of the present invention has been found to be particularly useful when the by-product fuel sitting on the base of the fuel hopper has a high moisture content and/or has been compacted due to the by-product fuel above it.
  • the by-product fuel delivery assembly provides suitable amounts of byproduct fuel for efficient combustion within the fluidised bed unit, which is sensitive as it can be difficult to maintain the fragile conditions without a steady and sufficient supply of by-product fuel into the fluidised bed unit, particularly for smaller fluidised beds where the fuel intake is between 80 kilograms and 500 kilograms per hour.
  • the by-product fuel feed mechanism comprises a spine arranged longitudinally in the fuel hopper having the plurality of push bars protruding perpendicularly therefrom; and, the spine is connected to the actuating means.
  • the plurality of push bars protruding perpendicularly from the spine are arranged in pairs, one on either side of the spine that are co-linear with each other.
  • the plurality of push bars protruding perpendicularly from the spine are arranged in pairs, one on either side of the spine that are offset with respect to each other in a non-linear manner.
  • the by-product fuel feed mechanism comprises a pair of longitudinally arranged support bars that run substantially adjacent the side walls of the fuel hopper, having the plurality of push bars connected laterally between the support bars; and, at least one of the support bars is connected to the actuating means.
  • the stop bars have a substantially triangular cross-section, each bar comprising a flat vertical face arranged toward the discharge slot, and a - A -
  • the push bars have a substantially triangular cross-section, each bar comprising a flat vertical face arranged toward the discharge slot, and a sloped face on an opposing side of the bar.
  • the advantage of having a sloped face on the push bars is that the bars will dig in under any by-product fuel on the back stroke, and thus will prevent by-product fuel from becoming stuck in the fuel hopper.
  • This is a particularly efficient embodiment of the fuel hopper which reduces by-product fuel waste and also ensures that no byproduct fuel becomes stuck on the base of the fuel hopper which could potentially cause the fuel hopper to malfunction.
  • the actuating means is a pneumatic ram.
  • the fuel metering device comprises a fuel feed auger which is provided exterior the fuel hopper and adjacent the discharge slot; wherein, the fuel feed auger comprises a fuel feed auger casing having two augers mounted side by side within the casing; wherein, the two augers are arranged to contra-rotate away from one another with respect to each other.
  • the fuel metering device comprises a fuel feed auger which is provided exterior the fuel hopper and adjacent the discharge slot; wherein, the fuel feed auger comprises a fuel feed auger casing having two augers mounted side by side within the casing; wherein, the two augers are arranged to contra-rotate toward one another with respect to each other.
  • the fuel feed auger further comprises a baffle plate mounted within the casing and above a discharge outlet of the fuel feed auger casing.
  • the fuel feed auger is controlled by a system controller to vary the amount of by-product fuel being feed out of a discharge outlet of the fuel feed auger.
  • the fuel metering device comprises a fuel feed auger which is provided adjacent the fluidised bed unit; wherein, the fuel feed auger comprises a fuel feed auger casing having two augers mounted side by side within the casing; wherein, the two augers are arranged to contra-rotate with respect to each other.
  • the advantage of arranging the two augers to contra-rotate with respect to each other is that the by-product fuel will be much less likely to bridge over the rotating augers as a result of this rotational arrangement of the twin augers.
  • the fuel feed auger unit is used to meter the amount of by-product fuel that is being feed into the fluidised bed unit.
  • contra-rotating twin augers are used to prevent "bridging" from occurring, wherein the by-product fuel in the fuel feed auger unit slightly compacts to bridge over the rotating augers and no by-product fuel can be delivered out of the fuel feed auger unit causing disruption to the operation of the fluidised bed unit.
  • a further advantage of this embodiment is that as the fuel metering device is provided adjacent the fluidised bed unit, the fuel conveyer does not need to be sealed, and is thus easier to construct, operate and maintain. Air ingress into the fluidised bed unit is still prohibited by the fuel metering device, but this arrangement allows for a simpler overall construction.
  • the fuel feed auger further comprises a baffle plate mounted within the casing and above a discharge outlet of the fuel feed auger casing.
  • the fuel feed auger is controlled by a system controller to vary the amount of by-product fuel being feed out of a discharge outlet of the fuel feed auger.
  • the fuel conveyer comprises a box-shaped conduit having a substantially flat floor and a proximal end adjacent the fuel hopper and a distal end adjacent the fluidised bed unit; wherein, a continuous link chain looped around a pair of end sprockets is located within the conduit, and the link chain mounts a plurality of by-product fuel moving paddles thereon; wherein, the fuel conveyer further comprises a plurality of intermediary sprockets, having a smaller diameter than the end sprockets, which engage a lower section of the looped link chain to guide the lower section of the looped link chain and hold the corresponding by-product fuel moving paddles substantially in abutment against the flat floor of the fuel conveyer.
  • the advantage of providing a plurality of intermediary sprockets is that the byproduct fuel moving paddles along a lower section of the continuous looped link chain are kept substantially in abutment against the flat floor of the fuel conveyer. This will improve the continuous delivery of by-product fuel to the fluidised bed and will reduce the possibility that the conveyer will malfunction or break due to clogged by-product fuel become caught beneath the lower section of the looped link chain and the corresponding by-product fuel moving paddles.
  • the fuel conveyer further comprises a sensor to confirm normal operation of the fuel conveyer by detecting rotation of one or more of the shafts for the end sprockets.
  • the fuel conveyer further comprises a sensor to confirm normal operation of the fuel conveyer by detecting rotation of one or more of the shafts for the intermediary sprockets.
  • the by-product fuel moving paddles are constructed of a heavy duty plastics. This is advantageous as the heavy duty plastic is sufficient rigid to drag portions of byproduct fuel along the conduit, but the plastic will not wear down a metallic floor of the conduit.
  • the conduit is constructed of mild steel.
  • conduit of the fuel conveyer is sealed to prevent air ingress into the by-product fuel delivery system.
  • the fuel metering device comprises a fuel feed auger which is provided external the fuel hopper and adjacent the discharge slot;
  • the fuel feed auger comprises a fuel feed auger casing having two augers mounted side by side within the casing; wherein, the two augers are arranged to contra-rotate away from one another with respect to each other and to feed by-product fuel through a discharge outlet of the fuel metering device and onto the fuel conveyer;
  • the fuel conveyer comprises a box- shaped conduit having a substantially flat floor and a proximal end adjacent the fuel hopper and a distal end adjacent the fluidised bed unit; wherein, a continuous link chain looped about a pair of end sprockets is located within the conduit, and the link chain mounts a plurality of by-product fuel moving paddles thereon;
  • the fuel conveyer further comprises a plurality of intermediary
  • the fuel conveyer comprises a box-shaped conduit having a substantially flat floor and a proximal end adjacent the fuel hopper and a distal end adjacent the fluidised bed unit; wherein, a continuous link chain looped about a pair of end sprockets is located within the conduit, and the link chain mounts a plurality of by-product fuel moving paddles thereon; the fuel conveyer further comprises a plurality of intermediary sprockets, having a smaller diameter than the end sprockets, which engage a lower section of the looped link chain to guide the lower section of the looped link chain and hold the corresponding by-product fuel moving paddles substantially adjacent to the flat floor of the fuel conveyer; and, in operation, by-product fuel is dragged along the
  • the by-product fuel delivery assembly further comprises a system controller which receives monitoring data regarding the operational parameters of the fluidised bed unit and an associated heat exchanger, and, varies the amount of by-product fuel being fed to the fluidised bed unit by controlling the operation of one or more of the fuel hopper, the fuel metering device and/or the fuel conveyer.
  • Fig. 1 is a perspective view of an energy conversion system in accordance with the present invention
  • Fig. 2 is a perspective view of a by-product fuel delivery system that forms part of the energy conversion system of Fig. 1 ;
  • Fig. 3 is a perspective view of a fuel hopper that forms part of the by-product fuel delivery system of Fig. 2;
  • Fig. 4 is a side elevation view of a push bar in the fuel hopper of Fig. 3;
  • Fig. 5 is a plan view of the fuel hopper of Fig. 3;
  • Fig. 6 is a perspective view of a fuel metering device that forms part of the byproduct fuel delivery system in accordance with the present invention
  • Fig. 7 is a plan view of a fuel metering device of Fig. 6;
  • Fig. 8 is a cross-sectional view of the fuel metering device along line VII-VII of
  • Fig. 9 is a perspective view of a fuel metering device in accordance with a further embodiment of the present invention.
  • Fig. 10 is a perspective view of a fuel conveyer that forms part of the by-product fuel delivery system of Fig. 2;
  • Fig. 11 is a cross-sectional view of the fuel conveyer along line X-X of Fig. 10;
  • Fig. 12 is a perspective view of a by-product fuel feed auger unit.
  • an energy conversion system comprising a fluidised bed unit 3, a by-product fuel feed system 5 feeding the fluidised bed unit 3, a heat exchanger 7 operatively coupled to the fluidised bed unit 3, an exhaust filter 9 operatively coupled to the heat exchanger 7 and a negative pressure system.
  • the negative pressure system comprises a forced draught fan 11 and an induction draught fan 13 which are operable to maintain a flow of exhaust gases in the direction from the fluidised bed unit 3 through the heat exchanger 7.
  • the fluidised bed unit 3 further comprises a charging inlet 15 for fuel delivered by the by-product fuel feed system 5, a diesel burner (not shown) connected to a burner inlet 17 and a furnace sump 19 containing fluidised bed media.
  • the furnace sump 19 tapers inwardly towards the bottom of the furnace sump 19 where there is a clinker extraction unit, in this case a furnace ash removal auger 21 located at the bottom of the furnace sump 19.
  • the fluidised bed unit 3 further comprises an air introducer assembly most of which is mounted substantially in the furnace sump 19 for delivering air up through the fluidised bed media in the sump.
  • the air introducer further comprises the forced draught fan 1 1 from the negative pressure system.
  • Above the furnace sump 19 is the furnace freeboard 23.
  • the by-product fuel feed system 5 comprises a hopper 25, a variable speed auger 27 and a fuel conveyor 29 to deliver fuel from the hopper to the charging inlet 15 of the fluidised bed unit 3.
  • the variable speed auger 27 is operated to deliver a desired amount of fuel from the hopper 25 onto the fuel conveyor 29.
  • the heat exchanger 7 comprises a pair of heat exchanger units, an upper heat exchanger unit 31 and a lower heat exchanger unit 33.
  • the lower heat exchanger unit 33 is provided with a cold water flow pipe 35 and the upper heat exchanger unit 31 is provided with a hot water return pipe 37.
  • the upper heat exchanger unit 31 further comprises a heat exchanger soot blower 32 mounted across the upper heat exchanger unit 31 and extending between a plurality of tubes (not shown) of the upper heat exchanger unit 31.
  • the heat exchanger soot blower 32 is rotatably mounted on the upper heat exchanger unit 31.
  • Below the lower heat exchanger unit 33 is a heat exchanger sump 39 which is provided with a heat exchanger ash removal auger 41 to remove ash from the heat exchanger sump.
  • the heat exchanger 7 is operatively coupled to the fluidised bed unit 3 by way of a freeboard interconnector 34.
  • the freeboard interconnector 34 is provided with a plurality of pulsed blower nozzles 36 arranged substantially in line with the floor of the freeboard interconnector 34. Pressurised air is periodically passed through the pulsed blower nozzles 36 to dislodge any settled ash from the floor of the freeboard interconnector 34.
  • a heat exchanger exhaust conduit 43 operatively couples the heat exchanger 7 to the exhaust filter 9.
  • the heat exchanger 7 may be alternatively replaced with or augmented by a steam generation unit or an electricity generation unit.
  • the exhaust filter 9 is a bag filter having a plurality of bags to catch the fly ash from the exhaust gases.
  • the exhaust filter 9 comprises an ash extractor auger 45 located at the bottom of the exhaust filter 9.
  • the induction draught fan 13 is coupled to the exhaust filter 9 and draws exhaust gases through the energy conversion system from the fluidised bed unit 3, through the heat exchanger 7 and through the exhaust filter 9.
  • the by-product fuel delivery assembly 5 comprising the fuel hopper 25, the fuel metering device 27 and the fuel conveyor 29 is shown.
  • the fuel hopper 25 comprises a fuel hopper base 47, a fuel hopper back wall 49, a fuel hopper front wall 51 and fuel hopper side walls 53.
  • the fuel hopper front wall 51 comprises a fuel hopper discharge slot 59 which runs in a horizontal direction across the width of the fuel hopper front wall 51 at a lowest portion of the fuel hopper front wall 51 , adjacent the fuel hopper base 47.
  • a byproduct fuel feed mechanism 71 is located within the interior cavity of the fuel hopper 25.
  • the by-product fuel feed mechanism 71 lies substantially over and along the fuel hopper base 47.
  • the by-product fuel feed mechanism 71 comprises a plurality of push bars 55 and a plurality of fixed bars 57.
  • the push bars 55 are moveable and connected to a fuel hopper actuator 73 which moves the push bars 55 in unison.
  • the fixed bars 57 are fixedly connected to the fuel hopper base 47 so as to be substantially in parallel with and intermediate the push bars 55.
  • the fuel hopper actuator 73 is a pneumatic ram which acts to move the by-product fuel feed mechanism 71 in a reciprocating fashion over the fuel hopper base 47 in a longitudinal direction relative to the fuel hopper toward and away from the fuel hopper discharge slot 59 as indicated by the bidirectional arrow A in Figure 5.
  • a hydraulic ram or a motor rotating a cam may be used as the actuator 73.
  • each of the push bars 55 and each of the fixed bars 57 are triangular or wedge shaped in cross-section.
  • the push bars 55 and fixed bars 57 comprise a sloped, rearward directed face 63, a substantially vertical forward directed face 65, and a substantially horizontal underside 67.
  • the plurality of push bars 55 are perpendicularly connected to a central spine 69.
  • the central spine 69 is connected to the actuator 73.
  • the forward stroke of the by-product fuel feed mechanism 71 is such as to move the push bar 55 so that its vertical forward directed face 65 is moved toward being substantially adjacent the sloped, rearward directed face 63 of a fixed bar 57.
  • the push bar 55 is moved so that its vertical, forward directed face 65 is moved away from being substantially adjacent the sloped rearward directed face 63 of a fixed bar 57 to a point where the sloped rearward directed face 63 of the push bar 55 is adjacent the vertical, forward directed face 65 of a fixed bar 57.
  • the dimensions and construction of the by-product fuel feed mechanism 71 are chosen with respect to the properties of poultry litter such as the average weight, density, consistency, moisture content and the like.
  • the fuel hopper 25 is supported by a plurality of support legs 61. It will be understood that various supports such as blocks or a skid may be used in place of the legs 61.
  • the fuel metering auger 27 comprises a pair of contra-rotating augers 75, 77 which rotate away from one another with respect to each other as indicated by arrows B and C respectively in Figure 8.
  • the pair of augers 75, 77 are mounted within a fuel metering auger casing 79 on a pair of respective shafts 81 , 83.
  • the fuel metering auger casing 79 comprises an outlet 87 having a discharge outlet 85 at one end of the fuel metering auger casing 79.
  • the diameter of the augers 75, 77 is such that the augers 75, 77 are mounted in close proximity to the side walls 89, 91 and the base 88 of the fuel metering auger casing 79.
  • the base 88 may comprise a raised rail 90 extending along the longitudinal length of the base 88 and located substantially between the pair of augers 75, 77 to assist with directing the by-product fuel (not shown) along the fuel metering auger 27 to the exit point 85.
  • the rail 90 will also prevent fuel from becoming clogged inside the fuel metering auger casing 79 over time.
  • the fuel metering auger 27 may be hermetically sealed to components of the byproduct fuel delivery system 5 to form part of the air tight section of the by-product fuel delivery system 5.
  • the fuel metering auger 27 is hermetically sealed to the discharge slot 59 of the fuel hopper 25 and to the fuel conveyer 29.
  • the fuel metering auger 27 is hermetically sealed to the fuel conveyer 29 and to the charging inlet 15 of the fluidised bed boiler 3.
  • Fig. 9 a further embodiment of the fuel metering auger 27 is shown wherein, an anti-clogging auger 86 is situated above the pair of contra-rotating augers 75, 77 so as to further assist with the prevention of clogging within the fuel metering auger 27.
  • the anti-clogging auger 86 may be linked to the pair of contra-rotating augers 75, 77 by a geared mechanism such as a simple drive chain so that the rotational speed of the anti-clogging auger 86 would be relative to the rotational speeds of the pair of contra-rotating augers 75, 77.
  • the pair of contra-rotating augers 75, 77 may be arranged to contra-rotate toward one another as this will also assist with preventing the by-product fuel to bridge over the auger 27.
  • the fuel conveyer 29 comprises a link chain 95 which is looped about a lower end sprocket 99 and an upper end sprocket 101 to form a chain drive system indicated generally by reference numeral 96.
  • the chain drive system 96 is housed within a fuel conveyer casing 98.
  • the fuel conveyer casing comprises a base 100 and a top cover 102, and has an inlet 105 and an outlet 107, as indicated in Fig. 10.
  • a plurality of fuel moving paddles 97 are connected to the link chain 95 at regular intervals to form part of the chain drive system 96.
  • the chain drive system 96 comprises a length of link chain 95 having a plurality of fuel moving paddles 97 which runs adjacent the base 100 to form a delivery portion of the chain drive system 96, and, the chain drive system 96 comprises a length of link chain 95 having a plurality of fuel moving paddles 97 which runs adjacent the top cover 102 of the fuel conveyer casing 98 to form a return portion of the chain drive system 96.
  • a plurality of intermediate retaining sprockets 103 are located within the fuel conveyer casing 98 and are used to retain the delivery portion of the chain drive system 96 adjacent to and in abutment with the base 100 of the fuel conveyer casing 98.
  • the intermediate retaining sprockets 103 are of a lesser diameter than the lower end sprocket 99 and the upper end sprocket 101. In this manner, the intermediate retaining sprockets 103 only contact the link chain 95 on the delivery portion of the chain drive system 96. This greatly improves the robustness of the chain drive system 96.
  • a motor (not shown) drives at least one of the sprockets 99, 101 , 103.
  • by-product fuel (not shown) will enter the inlet 105 as indicated by reference arrow D and one of the plurality of fuel moving paddles 97 will scoop some of the byproduct fuel that has entered through the inlet 105 and the fuel will be held in the gaps 109 between adjacent fuel moving paddles 97.
  • the fuel moving paddles will push the by-product fuel along the base 100 of the fuel conveyer 29 to the outlet 107 and the by-product fuel will be expelled from the fuel conveyer 29 from the outlet 107 as indicated by reference arrow E.
  • the fuel conveyer 29 may move approximately IOOkgs of by-product fuel per hour.
  • the fuel feed auger 111 comprises an auger 113 that is mounted within a fuel feed auger casing 79 on a shaft 115.
  • the fuel feed auger casing 79 is substantially similar to the fuel metering auger casing 79 and comprises an outlet 87 having an exit point 85 at one of its ends.
  • the diameter of the auger 113 is such that the auger 113 is mounted in close proximity to side walls 89, 91 of the fuel feed auger casing 79.
  • the fuel feed auger 111 may be hermetically sealed to components of the by-product fuel delivery system 5 to form part of an air tight section of the by-product fuel delivery system 5.
  • the fuel feed auger 111 may be open and allow air ingress to occur depending on the set-up of the by-product fuel delivery system 5.
  • operation parameters in relation to the fluidised bed unit and associated heat exchanger shall be understood to encompass parameters such as pressure within the freeboard of the fluidised bed unit, pressure within the heat exchanger, temperature within the fluidised bed, temperature within the freeboard of the fluidised bed unit, temperature within the heat exchanger, temperature of the liquid passing through and exiting the heat exchanger in addition to parameters relating to the temperature, pressure and measurable characteristics of the ash, exhaust and other expended materials from the overall energy conversion system.
  • the fuel metering auger 27 could comprise a single auger instead of two contra-rotating augers 75, 77.
  • the augers may contra-rotate toward each other in a further embodiment.
  • the by-product fuels that may be used in the fluidised bed units may be poultry litter, mushroom compost, meat and bone meal and other similar animal and vegetation waste. It should be understood that references to waste and to by-product fuel in this specification are inter-changeable, and, that both of the terms have been used so as to encompass the different types of waste and non-waste, or by-product fuel, which are so categorised by different regulatory bodies in different jurisdictions.
  • references to a hopper in this specification encompasses any type of storage area for holding by-product fuel to be subsequently delivered from the hopper for further processing.
  • the term "hopper” comprises a stand-alone container, a pit and the like. It will be appreciated that if a pit is used to store the by-product fuel, then the by-product fuel feed mechanism may be located on the ground inside the pit so as to facilitate the feed of by-product fuel from the pit for further processing. It will be further understood that references to "thermally treating" the by-product fuel, or any grammatical variations thereof, should be interpreted as incinerating, burning, combusting, cremating, igniting and/or an oxidising reaction with the by-product fuel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mycology (AREA)
  • Environmental Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Housing For Livestock And Birds (AREA)
  • Processing Of Solid Wastes (AREA)
  • Fertilizers (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Air Supply (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Incineration Of Waste (AREA)
  • Mushroom Cultivation (AREA)
  • Fodder In General (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Fuel Cell (AREA)

Abstract

La présente invention concerne un ensemble d'alimentation en combustible sous-produit (5) pour alimenter une unité à lit fluidisé (3) en combustible obtenu comme sous-produit, cet ensemble comprenant une trémie à combustible (25), un transporteur de combustible (29) et un dispositif de dosage de combustible (27). La trémie à combustible comprend un mécanisme d'acheminement de combustible (71) qui comprend une pluralité de barres d'entraînement (55) disposées latéralement et une pluralité de barres d'arrêt (57) disposées latéralement. Les barres d'entraînement et les barres d'arrêt coopèrent pour acheminer le combustible sous-produit reposant au fond de la trémie à combustible le long du fond de la trémie à combustible en direction de la fente de déchargement (59) de la trémie à combustible. On obtient ainsi une solution simple, efficace et économique nécessitant peu d'entretien pour l'acheminement du combustible sous-produit depuis la trémie à combustible. L'invention concerne également des modes de réalisation dans lesquels le transporteur de combustible comprend une chaîne à maillons (95), et une unité de dosage de combustible comprend une paire de vis sans fin (75, 77) d'acheminement de combustible tournant en sens contraire.
PCT/EP2009/062855 2008-11-20 2009-10-02 Ensemble d'alimentation en combustible sous-produit WO2010057712A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IE2008/0927 2008-11-20
IE20080927 2008-11-20

Publications (2)

Publication Number Publication Date
WO2010057712A2 true WO2010057712A2 (fr) 2010-05-27
WO2010057712A3 WO2010057712A3 (fr) 2010-10-28

Family

ID=41382173

Family Applications (7)

Application Number Title Priority Date Filing Date
PCT/EP2009/062857 WO2010057714A2 (fr) 2008-11-20 2009-10-02 Unité à lit fluidisé
PCT/EP2009/062865 WO2010057717A1 (fr) 2008-11-20 2009-10-02 Système anti-dépôt de cendres
PCT/EP2009/062866 WO2010057718A2 (fr) 2008-11-20 2009-10-02 Système de conversion d'énergie de sous-produits
PCT/EP2009/062864 WO2010057716A1 (fr) 2008-11-20 2009-10-02 Procédé de production de champignons
PCT/EP2009/062855 WO2010057712A2 (fr) 2008-11-20 2009-10-02 Ensemble d'alimentation en combustible sous-produit
PCT/EP2009/062863 WO2010057715A2 (fr) 2008-11-20 2009-10-02 Méthode d'aviculture
PCT/EP2009/062856 WO2010057713A2 (fr) 2008-11-20 2009-10-02 Système de conversion d'énergie

Family Applications Before (4)

Application Number Title Priority Date Filing Date
PCT/EP2009/062857 WO2010057714A2 (fr) 2008-11-20 2009-10-02 Unité à lit fluidisé
PCT/EP2009/062865 WO2010057717A1 (fr) 2008-11-20 2009-10-02 Système anti-dépôt de cendres
PCT/EP2009/062866 WO2010057718A2 (fr) 2008-11-20 2009-10-02 Système de conversion d'énergie de sous-produits
PCT/EP2009/062864 WO2010057716A1 (fr) 2008-11-20 2009-10-02 Procédé de production de champignons

Family Applications After (2)

Application Number Title Priority Date Filing Date
PCT/EP2009/062863 WO2010057715A2 (fr) 2008-11-20 2009-10-02 Méthode d'aviculture
PCT/EP2009/062856 WO2010057713A2 (fr) 2008-11-20 2009-10-02 Système de conversion d'énergie

Country Status (17)

Country Link
US (2) US8919289B2 (fr)
EP (2) EP2378864B1 (fr)
KR (1) KR101561563B1 (fr)
CN (2) CN102291981B (fr)
BR (1) BRPI0921972B1 (fr)
CY (2) CY1115342T1 (fr)
DK (2) DK2378864T3 (fr)
ES (2) ES2540746T3 (fr)
HR (2) HRP20140672T1 (fr)
HU (1) HUE026519T2 (fr)
IE (14) IE20090772A1 (fr)
MX (1) MX2011005310A (fr)
PL (2) PL2378864T3 (fr)
PT (2) PT2378864E (fr)
SI (2) SI2378854T1 (fr)
SM (2) SMT201400099B (fr)
WO (7) WO2010057714A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110748892A (zh) * 2019-09-12 2020-02-04 张�杰 一种采用拆料散热原理的环保危险废物焚烧处理设备

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201115453D0 (en) * 2011-09-07 2011-10-26 Kelda Water Services Projects Ltd Method of recovering/enhancing the energy from municipal solid waste
KR20170072666A (ko) * 2015-12-17 2017-06-27 삼성전자주식회사 디스플레이 장치, 원격 제어 장치 및 그 제어 방법
CA3023366A1 (fr) * 2017-03-17 2018-09-20 Ping Yu Structure de regulation de la ventilation et de la temperature pour animalerie
FR3065721B1 (fr) * 2017-04-28 2022-07-22 F M I Process Sa Installation compacte pour l'incineration de boues
IT201800003238A1 (it) * 2018-03-02 2019-09-02 Ambiente E Nutrizione Srl Procedimento e sistema ottimizzati per la produzione di un fluido riscaldato tramite combustione di un combustibile
BR112022012515A2 (pt) 2019-12-23 2022-09-06 Global Nutrient Conditioning Llc Condicionador de detritos e método de uso do mesmo
CN112514826B (zh) * 2020-12-16 2023-07-21 真木农业设备（安徽）有限公司 一种鸡舍饮水和自动喷淋装置
US20220400628A1 (en) * 2021-06-19 2022-12-22 Nicholas Scott REIMNITZ Environmental Control System Optimized for Small Scale Mushroom Cultivation
US12012577B1 (en) * 2022-05-03 2024-06-18 Mu Mycology System and method for continuous growth of fungal material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4461606A (en) * 1981-06-02 1984-07-24 S.W. Hooper & Co. Ltd. Supporting grip for bin or hopper
DE4008287A1 (de) * 1990-03-15 1991-09-19 Rompf Klaerwerkeinrichtungen G Aufbewahrungsbehaelter

Family Cites Families (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3153091B2 (ja) 1994-03-10 2001-04-03 株式会社荏原製作所 廃棄物の処理方法及びガス化及び熔融燃焼装置
US2003868A (en) * 1933-03-16 1935-06-04 James Mfg Co Barn
US2592711A (en) * 1948-08-19 1952-04-15 Knaust Herman Fermentation process
DE975727C (de) 1952-06-27 1962-06-28 Schmidt Sche Heissdampf Ges M Russblaeser mit drehbar und laengsverschiebbar angeordnetem Duesenblasrohr
DE2744684A1 (de) 1977-09-30 1979-04-05 Detlef Henke Klimaanlage fuer champignonkulturen
US4261137A (en) * 1979-05-10 1981-04-14 Primus John M Phase II of mushroom production
GB2073771A (en) 1980-04-11 1981-10-21 Marshall Newbridge Ltd D B Poultry rearing process
DE3115236A1 (de) 1981-04-15 1982-11-04 Babcock-BSH AG vormals Büttner-Schilde-Haas AG, 4150 Krefeld Wirbelbettfeuerung
US4462341A (en) 1983-01-07 1984-07-31 Strohmeyer Jr Charles Circulating fluidized bed combustion system for a steam generator with provision for staged firing
GB8327074D0 (en) * 1983-10-10 1983-11-09 English Electric Co Ltd Fluidised-bed heat and power plant
JPH0671389B2 (ja) 1985-02-06 1994-09-14 金子農機株式会社 麦桿等の有効利用装置
AT382227B (de) 1985-04-30 1987-01-26 Simmering Graz Pauker Ag Verfahren und vorrichtung zur verbrennung von festen, fluessigen, gasfoermigen oder pastoesen brennstoffen in einem wirbelschichtofen
DE3728982C1 (de) 1987-08-29 1989-02-16 Asea Brown Boveri Verfahren zum Regeln der Hoehe eines Wirbelbettes
NL9000617A (nl) * 1990-03-16 1991-10-16 Memon Bv Werkwijze en inrichting voor het verwerken van mest.
EP0509684A3 (en) 1991-04-15 1993-06-23 Foster Wheeler Usa Corporation Fluidized bed reactor with extraction of particulate material
JPH05264010A (ja) 1992-03-19 1993-10-12 Hitachi Ltd 流動層処理装置及び加圧流動層複合発電装置
US5305713A (en) 1992-07-29 1994-04-26 Vadakin, Inc. Angular rotation rotary cleaning device
FI98405B (fi) 1993-12-07 1997-02-28 Tampella Power Oy Leijukattilan arinarakenne
US5425331A (en) 1994-06-13 1995-06-20 Foster Wheeler Energy Corporation Circulating fluidized bed reactor for low grade fuels
FI963459A0 (fi) 1996-09-04 1996-09-04 Imatran Voima Oy Foerfarande och anordning foer oekning av kapasiteten hos en pannanlaeggning
US5879297A (en) 1997-05-08 1999-03-09 Lucent Medical Systems, Inc. System and method to determine the location and orientation of an indwelling medical device
US6055916A (en) * 1998-05-08 2000-05-02 Stevers; Paul H. Waste material processing apparatus and method
EP0981018A1 (fr) * 1998-08-19 2000-02-23 Crone B.V. Chaudière à lit fluidisé
AU7062200A (en) 1999-08-19 2001-03-13 Manufacturing And Technology Conversion International, Inc. Gas turbine with indirectly heated steam reforming system
NL1016019C2 (nl) 2000-08-25 2002-02-26 B T G B V Werkwijze en inrichting voor het verwerken van dierlijke mest.
EP1245143A1 (fr) 2001-03-28 2002-10-02 Rodolfo Gabellieri Procédé et installation pour la culture de champignons avec une centrale de co-génération de chaleur et d'électricité
KR200278789Y1 (ko) * 2002-04-02 2002-06-20 모유원 축사용 난방 및 공조시스템
JP2004212032A (ja) 2002-11-15 2004-07-29 Ebara Corp 流動層ガス化炉
JP2007533434A (ja) * 2004-04-02 2007-11-22 スキル アソシエイツ インコーポレイテッド バイオマス変換装置及びプロセス
US20060236906A1 (en) * 2005-04-26 2006-10-26 Harvey Buhr Waste litter heater
DE102006004222A1 (de) 2006-01-30 2007-08-09 Gks - Gemeinschaftskraftwerk Schweinfurt Gmbh Verfahren und Vorrichtung zur Reinigung von Heizflächen in thermischen Anlagen
CN201059534Y (zh) * 2006-11-16 2008-05-14 朱宗林 一种化工生产用的锅炉
KR100837203B1 (ko) * 2007-04-30 2008-06-13 지이큐솔루션 주식회사 계분 연료를 이용한 유동층 보일러 발전 플랜트
CN101343543A (zh) * 2008-07-09 2009-01-14 丽水市伟达新能源科技有限公司 一种农业废弃物与塑料垃圾综合利用的方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4461606A (en) * 1981-06-02 1984-07-24 S.W. Hooper & Co. Ltd. Supporting grip for bin or hopper
DE4008287A1 (de) * 1990-03-15 1991-09-19 Rompf Klaerwerkeinrichtungen G Aufbewahrungsbehaelter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110748892A (zh) * 2019-09-12 2020-02-04 张�杰 一种采用拆料散热原理的环保危险废物焚烧处理设备

Also Published As

Publication number Publication date
KR20110110125A (ko) 2011-10-06
IE20090768A1 (en) 2010-07-07
IE20090773A1 (en) 2010-07-07
HUE026519T2 (en) 2016-06-28
MX2011005310A (es) 2012-01-12
IES20090771A2 (en) 2010-07-07
ES2540746T3 (es) 2015-07-13
IES20090770A2 (en) 2010-07-07
CY1116443T1 (el) 2017-02-08
IES20090765A2 (en) 2010-07-07
SI2378864T1 (sl) 2014-09-30
PL2378864T3 (pl) 2014-09-30
IE20090764A1 (en) 2010-07-07
WO2010057718A3 (fr) 2010-07-22
WO2010057712A3 (fr) 2010-10-28
WO2010057716A1 (fr) 2010-05-27
ES2485914T3 (es) 2014-08-14
HRP20150686T1 (hr) 2015-08-28
IE20090760A1 (en) 2010-06-23
IE20090766A1 (en) 2010-07-07
PL2378854T3 (pl) 2015-09-30
DK2378854T3 (en) 2015-07-06
CN102291981B (zh) 2014-11-12
CN102291985A (zh) 2011-12-21
WO2010057713A3 (fr) 2010-07-22
KR101561563B1 (ko) 2015-10-19
WO2010057715A2 (fr) 2010-05-27
US8919289B2 (en) 2014-12-30
EP2378864B1 (fr) 2014-04-30
WO2010057713A2 (fr) 2010-05-27
CY1115342T1 (el) 2017-03-15
EP2378854A1 (fr) 2011-10-26
SMT201500152B (it) 2015-09-07
PT2378854E (pt) 2015-08-03
EP2378864A2 (fr) 2011-10-26
IES20090767A2 (en) 2010-07-07
US20120006279A1 (en) 2012-01-12
US20110308148A1 (en) 2011-12-22
WO2010057718A2 (fr) 2010-05-27
IES20090769A2 (en) 2010-07-07
CN102291981A (zh) 2011-12-21
WO2010057717A1 (fr) 2010-05-27
SMT201400099B (it) 2014-11-10
WO2010057715A3 (fr) 2010-09-16
PT2378864E (pt) 2014-08-04
IE20090772A1 (en) 2010-07-07
WO2010057714A3 (fr) 2010-07-22
IE20090761A1 (en) 2010-06-23
CN102291985B (zh) 2016-09-07
BRPI0921972A2 (pt) 2016-01-05
IES20090762A2 (en) 2010-06-23
DK2378864T3 (da) 2014-07-21
SI2378854T1 (sl) 2015-09-30
IES20090763A2 (en) 2010-06-23
US8819987B2 (en) 2014-09-02
BRPI0921972B1 (pt) 2022-07-19
HRP20140672T1 (hr) 2014-10-10
WO2010057714A2 (fr) 2010-05-27
EP2378854B1 (fr) 2015-04-01

Similar Documents

Publication Publication Date Title
WO2010057712A2 (fr) Ensemble d'alimentation en combustible sous-produit
US5138957A (en) Hot gas generation system for producing combustible gases for a burner from particulate solid organic biomass material
US6948436B2 (en) Method and apparatus for the gasification and combustion of animal waste, human waste, and/or biomass using a moving grate over a stationary perforated plate in a configured chamber
US20050229824A1 (en) Two-stage wet waste gasifier and burner
US8640633B2 (en) Biomass fuel furnace system and related methods
CN201269534Y (zh) 用于生物质秸秆焚烧的装置
US4574712A (en) Wood chip burning stoker type furnace
FI86473C (fi) Anordning foer upprivning och inmatning i eldstaden av straomaterialbalar och inmatning av andra liknande braenslen.
CS588487A2 (en) Furnace
US5103744A (en) Apparatus for the combustion and/or decomposition of fuel by heat, especially of solid fuels
IE20090770U1 (en) By-product fuel delivery assembly
IES85572Y1 (en) By-product fuel delivery assembly
DE202009008876U1 (de) Vorrichtung zum Verbrennen von Biomasse, insbesondere auf Zellulosebasis
EP0324775A1 (fr) Four.
CN214249597U (zh) 一种平板火化炉
US3880098A (en) Metering apparatus for incinerator ash pit
CA2421462A1 (fr) Gazeifieur et bruleur de dechets humides a deux etages
CN216010818U (zh) 生物质气化燃烧炉结构
KR100868985B1 (ko) 화목버너.
CN214581114U (zh) 一种用于生活垃圾焚烧炉渣下料的缓冲装置
JP7153399B2 (ja) 燃焼装置
JP7153400B2 (ja) 燃焼装置
CA1207601A (fr) Chaudiere a alimentation continue en copeaux
CZ12372U1 (cs) Topeniště, zejména pro spalování peletek ze slisované biomasy
CN112128792A (zh) 一种刮板给料系统的锅炉

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09783711

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09783711

Country of ref document: EP

Kind code of ref document: A2