EP2457021A1 - Cuve de réacteur à vaporiseur et ensemble brûleur - Google Patents

Cuve de réacteur à vaporiseur et ensemble brûleur

Info

Publication number
EP2457021A1
EP2457021A1 EP10737850A EP10737850A EP2457021A1 EP 2457021 A1 EP2457021 A1 EP 2457021A1 EP 10737850 A EP10737850 A EP 10737850A EP 10737850 A EP10737850 A EP 10737850A EP 2457021 A1 EP2457021 A1 EP 2457021A1
Authority
EP
European Patent Office
Prior art keywords
fuel
burner
inlet
chamber
reactor vessel
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP10737850A
Other languages
German (de)
English (en)
Inventor
Thomas Gerard Mimnagh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 IE20090612A external-priority patent/IE20090612A1/en
Application filed by Individual filed Critical Individual
Publication of EP2457021A1 publication Critical patent/EP2457021A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D5/00—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel
    • F23D5/12—Details
    • F23D5/123—Inserts promoting evaporation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D3/00—Burners using capillary action
    • F23D3/40—Burners using capillary action the capillary action taking place in one or more rigid porous bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D5/00—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel
    • F23D5/12—Details
    • F23D5/126—Catalytic elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/05002—Use of porous members to convert liquid fuel into vapor

Definitions

  • a vaporizer reactor vessel and burner assembly Introduction This invention relates to the vaporization of liquid fuels and to burner assemblies for heating, cooking, lighting and cleaning appliances utilising such gasified fuels.
  • the invention particularly relates to blue flame burners.
  • a burner assembly including a burner and an associated vaporizer reactor vessel including a vaporizing chamber having a fuel oil inlet for connection to a liquid fuel supply and a fuel vapour outlet with a jet for discharging fuel vapour to the burner, and a heater operable to heat an interior of the chamber to a temperature sufficient to vaporize the fuel oil, characterised in that a porous body of catalytic fuel conditioning material is packed within the chamber between the inlet and the outlet, said catalytic fuel conditioning material being operable to inhibit deposition of carbonaceous material from the fuel.
  • the fuel conditioning material comprises a plurality of pellets shaped to provide voids between said pellets when they are packed in the chamber for through passage of fuel.
  • means for controlling the temperature within the chamber, said means comprising a thermocouple mounted within the chamber and connected to a controller for regulating operation of the heater in response to the sensed temperature within the chamber.
  • the burner assembly includes a fuel pump having an inlet for connection to a fuel oil supply and an outlet connected to the inlet of the reactor vessel, a fuel supply control valve is mounted between the pump outlet (34) and the reactor vessel inlet, said fuel supply control valve being operably connected to the controller for regulating operation of the control valve.
  • the burner comprises a tube burner.
  • the tube burner has an inlet at one end, the jet being mounted at the inlet such that fuel vapour discharged from the jet draws in air through the inlet for mixing with the fuel vapour within the burner prior to discharge through an outlet of the burner.
  • controller is operable to regulate operation of the fuel pump for controlling operation of the burner.
  • the vaporizer reactor vessel is formed by portion of a fuel line connected to the burner, said fuel line portion having a vaporizing heater for heating said fuel line portion to a fuel vaporizing temperature and said fuel line portion containing the porous of catalytic fuel conditioning material within said fuel line portion.
  • the vaporizing heater is formed by the burner, said fuel line portion being mounted adjacent to the burner in a position to receive radiant heat from the burner during operation of the burner.
  • a fan is provided which is operable to deliver air to the burner together with the fuel vapour.
  • the fuel conditioning material comprises aluminium oxide.
  • the fuel conditioning material is selected from the group comprising zeolite, aluminium hydrosilicate, treated bentonite clay, Fullers earth, bauxite and silka-alumina.
  • the pellets have a cylindrical shape.
  • a vaporizer reactor vessel including a vaporizing chamber having a fuel oil inlet and a fuel vapour outlet, and a heater operable to heat an interior of the chamber to a temperature sufficient to vaporize the oil, characterised in that a porous fuel conditioning material is packed within the chamber between the inlet and the outlet.
  • said fuel conditioning material is operable to inhibit deposition of carbonaceous material from the fuel within the chamber.
  • the fuel conditioning material comprises a plurality of pellets shaped to provide voids between said pellets when they are packed in the chamber for through passage of fuel.
  • the pellets have a generally cylindrical shape.
  • the pellets may have a diameter of about 2mm and a length of about 5 mm.
  • the pellets have a generally spherical shape. Other suitable shapes may also be used.
  • the fuel conditioning material comprises aluminium oxide.
  • the fuel conditioning material is selected from the group comprising zeolite, aluminium hydrosilicate, treated bentonite clay, Fullers earth, bauxite and silka-alumina.
  • means is provided for controlling the temperature within the chamber. Conveniently, said means is a thermocouple mounted within the chamber and connected to a controller for regulating operation of the heating means in response to the sensed temperature within the chamber.
  • the fuel conditioning material has a honeycomb structure. This advantageously provides a relatively large surface area for heat transfer to the fuel oil for vaporizing the fuel oil.
  • the fuel conditioning material comprises a body formed of a sintered metal material such as bronze, brass or copper, for example.
  • the fuel conditioning material may comprise pieces or pellets of the sintered metal material.
  • the body is generally cylindrical in shape having a central opening within which is nested a heating element which forms the heater.
  • the chamber is cylindrical, the body being a snug fit within the chamber so that fuel oil is directed through the body as it travels between the inlet and the outlet of the chamber, the chamber having an enlarged inlet end defining an annular space encircling an inlet end of the body.
  • fuel oil has access all around an inlet end of the body for efficient and even delivery of fuel oil through the body.
  • a jet is mounted at or adjacent the outlet of the chamber.
  • a temperature sensor is provided for sensing the temperature within the chamber, the temperature sensor and the heater being connected to a controller, said controller being operable to regulate operation of the heater in response to the sensed temperature within the chamber.
  • the invention provides a fuel vaporizing system comprising the reactor vessel in combination with a fuel pump having an inlet for connection to a fuel oil supply and an outlet connected to the inlet of the reactor vessel.
  • a fuel supply control valve is mounted between the pump outlet and the reactor vessel inlet, said fuel supply control valve being operably connected to the controller for regulating operation of the control valve.
  • a burner assembly comprising:
  • the vaporizing means arranged to provide a vaporized fuel at an outlet thereof; and a burner having an inlet, wherein the inlet is in fuel communication with the outlet of the vaporizing means, the burner comprising means for premixing the vaporized fuel with air at the inlet prior to combustion.
  • the burner further comprises a perforated chamber into which the premixed air and fuel mixture is conveyed, wherein the mixture is ignited as it discharges through the perforated burner.
  • the inlet may be provided at one end of the chamber.
  • the perforations are provided in the form of slits and/or holes provided circumferentially of the chamber.
  • the burner is a tube burner. In other embodiments, the 5 burner may be a ceramic burner.
  • the vaporized fuel is premixed with sufficient air at the inlet to support blue flame combustion. Ideally, no further air need be supplied to the burner. However, in certain embodiments supplementary air may be supplied, for 10 example, to enhance combustion.
  • the air for premixing may be supplied by an air fan. The air fan may have the secondary purpose of directing the premixed fuel into the burner.
  • An advantage of this arrangement is that a burner which is conventionally used 15 for combustion of gas fuels such as a tube burner or ceramic burner, may be used in conjunction with a vaporized liquid fuel premixed with air to achieve blue flame combustion.
  • Blue flame combustion ensures high efficiency and low NOx emissions.
  • the vaporized fuel may be provided to the burner at low pressure, ensuring safe
  • the vaporizing means is arranged to vaporize a liquid fuel.
  • the liquid fuel may be a liquid fuel oil. Any suitable fuel oil may be used, such as, for example, biofuels.
  • the vaporizing means comprises 25 a liquid fuel inlet and a fuel vapour outlet and a heating means operable to heat the liquid fuel to a temperature sufficient to vaporize the liquid, wherein a fuel conditioning material is provided between the inlet and the outlet.
  • the vaporizing means comprises the
  • the vaporizing means may comprise a preheat surround (or economizer) tube having a fuel conditioning material provided therein.
  • the surround tube may be arranged such that heat generated by combustion of the premixed fuel in the burner causes vaporization of the fuel in the surround tube.
  • the surround tube is arranged such that it is substantially adjacent to the burner.
  • the surround tube is arranged such that it substantially encompasses or encircles at least a portion of the combustion chamber of the burner.
  • a heater may be provided adjacent to the surround tube to vaporize liquid fuel in the tube.
  • the vaporizer reactor vessel or fuel vaporizing system may be used to vaporize the liquid fuel during start up. Furthermore, the vaporizer reactor vessel or fuel vaporizing system alone may be used to vaporize the fuel throughout operation of the burner assembly. However, ideally, and so as to enable economy, once steady-state operation has been reached, the surround tube may become the principal vaporizing means, allowing the vaporizer reactor vessel or fuel vaporizing system to be switched off .
  • the vaporizing means may comprise a fuel line having a fuel conditioning material provided in a portion thereof and a heating means provided proximal or adjacent to said portion to vaporize liquid fuel in the fuel line.
  • the heating means may be arranged such that the fuel line passes therethrough. In other embodiments, the heating means may be arranged within the fuel line.
  • any of the fuel conditioning materials described above with reference to the vaporizer reactor vessel may be used in the surround tube or fuel line.
  • the invention provides a burner assembly incorporating the vaporizer reactor vessel or the fuel vaporizing system.
  • the burner assembly includes a tube burner having an inlet at one end, the jet being mounted at the inlet such that fuel vapour discharged from the jet draws in air through in the inlet for mixing with the fuel vapour within the burner prior to discharge through an outlet of the burner.
  • the controller is operable to regulate operation of the fuel pump for controlling operation of the burner.
  • controller is operable to switch off the burner if the heater fails or is switched off.
  • the invention provides a solid fuel affect oil fire incorporating the vaporizer reactor vessel or the fuel vaporizing system or the burner assembly described herein.
  • the invention provides an internal combustion engine incorporating the vaporizer reactor vessel.
  • the invention provides a method of vaporizing a fuel oil including the step of heating the fuel oil to a vaporizing temperature in the presence of a fuel conditioning material which is operable to inhibit deposition of carbonaceous material from the fuel.
  • the fuel conditioning material is aluminium oxide.
  • the fuel conditioning material is selected from the group comprising zeolite, aluminium hydrosilicate, treated bentonite clay, Fullers earth, bauxite and silka-alumina.
  • Fig. 1 is a schematic sectional elevational view of a vaporizer
  • Fig. 2 is a schematic plan illustration of a burner assembly
  • Fig. 3 is a schematic illustration of a fuel effect oil fire
  • Fig. 4 is a schematic illustration of a burner assembly incorporating a vaporizer reactor vessel according to another embodiment of the invention.
  • Fig. 5 is a schematic illustration of a burner assembly according to another embodiment of the invention.
  • Fig. 6 is a schematic illustration of a burner assembly according to a further embodiment of the invention.
  • Fig. 7 is a schematic illustration of a burner assembly according to another embodiment of the invention.
  • the vaporizer 1 has a generally cylindrical steel housing 2 having a fuel oil inlet 3 and a fuel vapour outlet 4, with, in this case, a jet 5 mounted at the outlet 4.
  • the housing 2 contains a vaporizer unit 7 with an associated heater 8 for heating the vaporizer unit 7 so that fuel oil entering through the inlet 3 is vaporized and then discharged through the outlet 4.
  • the housing 2 has an upper portion 10 and a lower portion 11.
  • the vaporizer unit 7 is a snug fit within the upper portion 10 to ensure that fuel oil passes through the vaporizer unit 7 for vaporization.
  • the lower portion 11 has a somewhat larger diameter than the upper portion 10 thus defining an annular space 14 extending around a lower end of the vaporizing unit 7 so that fuel oil will evenly flood and pass through the vaporizer unit 7.
  • An end cover 15 seals a bottom of the housing 2.
  • the vaporizer unit 7 is generally cylindrical being formed in this case by sintered bronze material to provide a large heated metal surface for vaporizing fuel oil.
  • the heating element 8 is nested within a central bore of the vaporizer unit 7 for heating the vaporizer unit 7 to a desired vaporizing temperature.
  • a thermocouple 16 is embedded in the vaporizer unit 7 for monitoring the temperature of the vaporizer unit 7.
  • a burner assembly indicated generally by the reference numeral 20, incorporating the vaporizer " I .
  • the burner assembly 20 comprises the vaporizer 1 in combination with a combustion manifold 21.
  • the jet 5 of the vaporizer 1 discharges within the combustion manifold 21.
  • An array of spaced- apart discharge slits 22 is provided in the manifold 21 so that vapour discharged into the manifold 21 from the jet 5 passes outwardly through the slits 22 for combustion.
  • Fig. 3 shows the burner assembly 20 with the vaporizer 1 incorporated in a solid fuel effect oil fire, indicated generally by the reference numeral 30.
  • the fire assembly 30 has a pump 31 with an inlet 32 for connection to a liquid fuel oil supply such as a fuel oil reservoir tank 33.
  • An outlet 34 of the pump 31 is connected by a fuel transfer line 35 with the vaporizer 1 inlet 3.
  • the fuel pump 31 creates a desired fuel pressure to the vaporizer 1 and is electronically controlled.
  • a fuel supply control oil valve 40 is mounted in the fuel line 35 communicating between the pump 31 and the inlet 3 of the vaporizer 1.
  • a pile of ceramic imitation coals 41 mounted on a top surface 24 of the combustion manifold 21 is a pile of ceramic imitation coals 41. These coals 41 cover the slits 22 so that, in use, vapour from the manifold 21 passes up through the slits 22 and about the coals 41 igniting to form a solid fuel effect fire. Flames generated by combustion of the vapour heat up the ceramic imitation coals 41 which will glow red in the fashion of pieces of coal in a real fire.
  • a pair of electrodes 45 is mounted directly above the slits 22 and is operatively connected with a controller 46.
  • a flame sensor 48 is also mounted adjacent the slits 22, being connected also to the controller 46.
  • the fuel supply control valve 40, the thermocouple 16 and the heater element 8 are all operatively connected to the controller 46 for operation of the fire 30 as described below.
  • the burner assembly 20 and coals 41 are mounted in a fireplace.
  • Liquid fuel oil is delivered from the reservoir 33 by the pump 31 into the vaporizer 1 at the desired fuel pressure.
  • the controller 46 regulates the supply of pressurised liquid fuel oil by regulating operation of the pump 31.
  • Operation of the heating element 8 is regulated by the controller 46 to heat the vaporizer unit 7 to a desired vaporizing temperature.
  • the thermocouple 16 senses the temperature and with the controller 46 enables regulation of the operation of the heating element 8 to maintain a desired vaporizing temperature within the vaporizer 1.
  • Fuel oil passing through the vaporizer 1 is vaporized and discharged through the jet 5 into the combustion manifold 21.
  • a spark is delivered across the electrodes 45 by the controller 46.
  • the flame sensor 48 ensures the presence of a flame when vapour is being discharged from the manifold 21 and if not the controller 46 shuts off the fuel supply valve 40.
  • the vaporizer 1 essentially comprises a steel container or housing 2 within which an electrical heater 8 is surrounded by a heat-exchanging core or vaporizing unit 7 of sintered bronze material.
  • the temperature within the housing 2 is totally controlled by means of the thermocouple 16 for optimum vaporization.
  • the vaporizer 1 is primarily intended to heat kerosene oil, home heating oil, or diesel up to a point where it is a fully vaporized gas.
  • the honeycombed structure provided by the sintered bronze vaporizer unit 7 is particularly advantageous for vaporizing the liquid fuel oil.
  • the honeycombed structure may be provided in any suitable fashion. It has been found that sintered bronze, brass or copper are suitable. These materials have the ability to heat up quickly, retain heat and readily transfer heat to the fuel to produce a vaporized gas for combustion.
  • the vaporizer 1 could be used in a wide range of oil burners which, for example, could be used in water heaters, water boilers, cookers, stoves, radiant heaters, hobs and industrial heaters and furnaces and other heating and lighting products.
  • the vaporizer may also find application in steam cleaners.
  • the invention may be applied to engines generally run on liquid fuels such as internal combustion engines used in motor vehicles, electrical generators and the like or for powering various other machines where a liquid fuel needs to be vaporized prior to combustion to generate power.
  • the burner assembly 50 includes a cylindrical vaporizer reactor vessel 51 having an internal vaporizing chamber 52 with a liquid fuel inlet 53 and a fuel vapour outlet 54 with a jet 55 mounted at the outlet 54.
  • the heater 8 within the chamber 52 is surrounded by pellets 56 of aluminium oxide. These pellets 56 are generally cylindrical having a diameter of about 2mm and a length of about 5mm. Thus the pellets 56 form a porous packing material within the chamber 52. In addition, the pellets 56 themselves are porous.
  • the heater 8 is operable to heat an interior of the chamber 52 to a temperature sufficient to vaporize a liquid fuel delivered through the chamber 52 between the inlet 53 and the outlet 54.
  • the jet 55 discharges a hot stream of fuel vapour within a cylindrical tube burner 60 at the same time drawing in air through an inlet 61 of the burner 60 at one end of the burner 60 for mixing with the fuel vapour.
  • the fuel vapour and air mixture discharges from the burner 60 through a plurality of circumferential outlet slits 62 and is ignited as it discharges from the burner 60.
  • Electrodes 63 for igniting the fuel vapour initially are provided on the burner 60.
  • the burner assembly 50 can conveniently be modulated from a minimum to a maximum setting as required by controlling operation of the fuel pump 31.
  • Liquid fuel is delivered from a fuel tank (not shown) through a fuel line 66 to a fuel pump 31.
  • the fuel pump 31 pumps the liquid fuel through a solenoid operated fuel supply control valve 40 to the inlet 53 of the vaporizer reactor vessel 51.
  • the start-up sequence is as follows: 1. Heater 8 is switched on and brought to the desired temperature.
  • Fuel supply control valve 40 opens.
  • Electrodes 63 are operated to ignite vapour at the burner 60.
  • Burner 60 continues to run when flame is present and shuts in event of flame failure.
  • the controller 46 controls temperature parameters before allowing the other operations to take place. It includes a safety feature such that if the heater fails, it will shut down the burner. Another feature is an economy mode in which the power supply to the heater is initially high to bring the vaporizer reactor vessel up to the required operating temperature quickly and then is reduced in the economy mode.
  • the burner assembly 500 comprises a liquid fuel supply line 540 connected between a fuel oil reservoir tank (not shown) and a fuel pump 550.
  • the fuel pump 550 is connected through a fuel supply control valve 560 to a preheat surround tube 570 having a fuel conditioning material (not shown) provided therein.
  • the burner assembly further comprises a vaporizer reactor vessel 510 having an internal vaporizing chamber 511 with a liquid fuel inlet 512 and a fuel vapour outlet 513.
  • a nozzle 514 is mounted at the fuel vapour outlet 573.
  • a heater 515 is operable to heat an interior of the chamber 511 to a temperature sufficient to vaporize a liquid fuel delivered through the chamber 511 between the liquid fuel inlet 512 and the fuel vapour outlet 513.
  • the nozzle 514 is in fluid communication with an inlet 521 of a tube burner 520.
  • An air fan 525 is also in fluid communication with the nozzle 514 to premix the vaporized fuel oil with air at the inlet 521 of the tube burner 520.
  • the tube burner 520 comprises a perforated cylindrical chamber 522 into which the premixed air and fuel mixture is conveyed.
  • the perforations are provided in the form of slits 523 provided circumferentially on the chamber 522. The air flow from the fan 525 forces the air and fuel into the burner chamber 522.
  • the burner 520 further comprises an ignitor 524 in the form of electrodes or other similar means to ignite the mixture of fuel and air as it is discharged from the burner perforated chamber 522 through the slits 523.
  • the preheat surround tube 570 is arranged such that it surrounds the combustion chamber 522 of the tube burner 520.
  • the burner assembly 500 further comprises a controller 580 having a plurality of control outputs 581-585 which may be used to control operation of the fuel pump 550, the fuel supply control valve 560, the heater 515, the ignitor 524 and the fan 525, respectively.
  • liquid fuel is delivered from a fuel tank through the fuel line 540 to the fuel pump 550.
  • the fuel pump 550 pumps the liquid fuel through the open control valve 560 into the preheat surround tube 570.
  • the fuel is then supplied to the vaporizer reactor vessel 510.
  • the heater 515 heats the interior of the vaporizing chamber 511 to vaporize the liquid fuel.
  • the heater 515 may be turned on in advance of supply of fuel to the vaporizer reactor vessel 510 to allow the desired temperature to be reached.
  • Vaporized fuel discharged through the fuel vapour outlet 513 flows through the nozzle 514 and is premixed with air from the fan 525 at the inlet 521 of the burner 520.
  • the ignitor 524 is operated to ignite the mixture of fuel and air as it is discharged from the slits 523 of the tube burner 520.
  • the heat from combustion of the premixed fuel in the tube burner 520 is sufficient to vaporize the liquid fuel in the surround tube 570, and the heater 515 may therefore be switched off, thus improving the operating efficiency.
  • FIG. 6 illustrates a burner assembly 600 according to another embodiment of the present invention.
  • the burner assembly 600 comprises a liquid fuel supply line 640 connected between a fuel oil reservoir tank (not shown) and a fuel pump 650.
  • the fuel pump 650 is connected through a fuel supply control valve 660 to a nozzle 614.
  • a vaporizing heater 615 is arranged adjacent a portion of the fuel line 640 having a fuel conditioning material (not shown) provided therein.
  • the vaporizing heater 615 is operable to heat liquid fuel in the fuel line 640 to a temperature sufficient to cause vaporization.
  • the nozzle 614 is in fluid communication with an inlet 621 of a tube burner 620.
  • An air fan 625 is also in fluid communication with the nozzle 614 to premix the vaporized fuel oil with air at the inlet 621 of the burner 620.
  • the tube burner 620 has a perforated cylindrical chamber 622, with perforation in the form of slits 623 provided circumferentially on the chamber 622. Operation of the tube burner 620 is as described above with reference to Figure 5.
  • the burner assembly 600 further comprises a controller 680 having a plurality of control outputs 681 -685 which may be used to control operation of the fuel pump 650, the fuel supply control valve 660, the vaporizing heater 615, the ignitor 624 and the fan 625, respectively.
  • liquid fuel is delivered from a fuel tank through fuel supply line 640 to fuel pump 650.
  • the fuel pump 650 pumps the liquid fuel through the control valve 660 and through the portion of the fuel line having the fuel conditioning material provided therein.
  • the heater 615 heats this portion of the fuel line to vaporize the liquid fuel.
  • the heater 615 may be turned on in advance of supply of fuel to the fuel line to allow the desired temperature to be reached.
  • the vaporized fuel flows through the nozzle 614 and is premixed with air from the fan 625 at the inlet 621 of the burner 620.
  • the ignitor 624 is operated to ignite the mixture of fuel and air as it is discharged from the slits 623. Referring now to Fig.
  • FIG. 7 there is shown another burner assembly according to the invention indicated generally by the reference numeral 700. Parts similar to those described previously have been assigned the same reference numerals. This is largely similar to the burner assembly 500 shown in Fig. 5. However, in this case the vaporizer reactor vessel 510 shown in Fig. 5 has been replaced by the vaporizing heater 615 which is mounted on the pre-heat surround tube 570 and operated initially to vaporize the liquid fuel in the presence of the catalyst material and then being switched off when the heat generated by the tube burner 620 in operation is sufficient to cause the liquid fuel to vaporize in the pre-heat surround tube 570 in the presence of the catalyst material before delivery to the nozzle 614. It will be appreciated that the invention provides a premixed blue flame low pressure oil burner.
  • the burner produces a high temperature clean blue flame which can be visually compared to existing gas burners. This burner operates at a very low pressure which reduces operating noise to a minimum.
  • the premixed burner automatically adjusts to its own air requirements.
  • the technology can also be used in semi-mixed burners, ceramic gas burners, and ceramic radiant burners.
  • the small size of the new burner will not only reduce the physical size of the heating product but will also reduce fuel usage.
  • the result will be a clean burning, low emissions unit (NOx and carbon dioxide) with extremely high efficiency.
  • a further aspect of the invention is that it can be modulated from a minimum to a maximum setting depending on the kW output of the products e.g. oil boilers, cookers, stoves, furnaces, space heaters radiant, process heating, camping and marine, oil flame fires, domestic and commercial.
  • the products e.g. oil boilers, cookers, stoves, furnaces, space heaters radiant, process heating, camping and marine, oil flame fires, domestic and commercial.
  • Vaporization takes place in the presence of a catalyst used for the reforming of oil, e.g. aluminium oxide or any other catalyst (in this regard other possible catalysts include zeolite, aluminium hydrosilicate, treated bentonite clays, Fullers earth, bauxite and silka-alumina).
  • a catalyst used for the reforming of oil e.g. aluminium oxide or any other catalyst (in this regard other possible catalysts include zeolite, aluminium hydrosilicate, treated bentonite clays, Fullers earth, bauxite and silka-alumina).
  • the heated catalyst reacts with fuel oil to improve the transition of oil to the gas phase and eliminates the problem of cracking or coaking. It also improves the thermal transfer of heat to the fluid. It has been shown to significantly reduce NOx and the carbon dioxide of the burnt fuel.
  • the vaporizer reactor vessel of the invention can be used in a wide range of applications wherever liquid fuels need to be vaporized for combustion. This will include various burner assemblies used in heating and lighting applications and also in connection with internal combustion engines such as are used in automotive applications, electricity generation etc. It will be noted that the vaporizer reactor vessel of the invention provides a very clean burning, low emission (NOx and Carbon Dioxide) vapour fuel with extremely high efficiency.
  • the vaporizer reactor vessel of the invention can be used with various liquid fuels, including kerosene, diesel, bio fuels etc. It is also envisaged that the fuel oil may be further treated by fuel conditioning material upstream of the vaporizer reactor vessel, possibly in a filter or the like device.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Spray-Type Burners (AREA)

Abstract

L'invention porte sur une cuve de réacteur à vaporiseur (51) qui comprend une chambre de vaporisation (52) ayant une entrée d'huile combustible (53) et une sortie de vapeur combustible (54). Une buse (55) est montée à la sortie (54). Un élément chauffant (8) monté dans la chambre (52) peut être mis en action pour chauffer l'huile combustible qui passe à travers la chambre (52) à une température de vaporisation. Un corps poreux de matière de conditionnement de carburant catalytique (56) est prévu dans la chambre (52) entre l'entrée (53) et la sortie (54) et peut être mis en action pour inhiber le dépôt de matière charbonneuse provenant du combustible. La buse (55) débite dans un brûleur à tube cylindrique (60) ayant des fentes de sortie circonférentielles (62) à travers lesquelles la vapeur combustible et l'air sont débités pour la combustion.
EP10737850A 2009-07-20 2010-07-20 Cuve de réacteur à vaporiseur et ensemble brûleur Withdrawn EP2457021A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IE20090563 2009-07-20
IE20090612A IE20090612A1 (en) 2009-08-07 2009-08-07 A vaporizer reactor vessel
PCT/EP2010/060507 WO2011009872A1 (fr) 2009-07-20 2010-07-20 Cuve de réacteur à vaporiseur et ensemble brûleur

Publications (1)

Publication Number Publication Date
EP2457021A1 true EP2457021A1 (fr) 2012-05-30

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EP10737850A Withdrawn EP2457021A1 (fr) 2009-07-20 2010-07-20 Cuve de réacteur à vaporiseur et ensemble brûleur

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Country Link
EP (1) EP2457021A1 (fr)
WO (1) WO2011009872A1 (fr)

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PL2549182T3 (pl) * 2011-07-21 2014-04-30 Planika Sp Z O O Urządzenie paleniskowe do kominka na paliwo płynne
DK177438B3 (en) * 2012-01-19 2017-10-02 Decoflame Aps Electronically controlled burner
WO2014089191A1 (fr) * 2012-12-04 2014-06-12 Thermolift, Inc. Combinaison d'échangeur de chaleur et de brûleur

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