EP1031000A1 - Dispositif et reacteur pour la combustion de combustibles - Google Patents

Dispositif et reacteur pour la combustion de combustibles

Info

Publication number
EP1031000A1
EP1031000A1 EP98959868A EP98959868A EP1031000A1 EP 1031000 A1 EP1031000 A1 EP 1031000A1 EP 98959868 A EP98959868 A EP 98959868A EP 98959868 A EP98959868 A EP 98959868A EP 1031000 A1 EP1031000 A1 EP 1031000A1
Authority
EP
European Patent Office
Prior art keywords
reaction chamber
reactor
combustion
water
fuels
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.)
Granted
Application number
EP98959868A
Other languages
German (de)
English (en)
Other versions
EP1031000B1 (fr
Inventor
Franz Josef Staffler
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.)
Bramble Trading Internacional Ltda
Original Assignee
Gourmeli International NV
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 Gourmeli International NV filed Critical Gourmeli International NV
Publication of EP1031000A1 publication Critical patent/EP1031000A1/fr
Application granted granted Critical
Publication of EP1031000B1 publication Critical patent/EP1031000B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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 
    • F23C99/00—Subject-matter not provided for in other groups of this subclass
    • 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
    • F23G7/05—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste oils
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F23L7/002—Supplying water
    • F23L7/005—Evaporated water; Steam

Definitions

  • the invention relates to a method for the combustion of fuels, in which the fuels are burned together with air, possibly with the addition of water and / or an oxidizing agent, and to a reactor for such a combustion method with a reaction chamber with feed openings for the fuel, the air , possibly the water and / or an oxidizing agent and with an outlet opening for the combustion products.
  • a device and a method for the combustion of oil with the addition of water are known from WO95 / 23942, in which case oil is introduced into a combustion chamber until an oil bath has formed, which then has a temperature between 250 ° and 350 ° C is preheated. Then water is sprayed onto the surface of the hot oil bath, which results in a flame eruption when air is simultaneously fed into the combustion chamber.
  • the level of the oil bath should not be less than 3 to 4 mm high during combustion to prevent the combustion from stopping.
  • the device used for this purpose essentially comprises a combustion chamber in the form of a truncated pyramid or truncated cone with lateral supply openings for oil and water from corresponding storage containers.
  • the oil bath is heated electrically. Air enters the combustion chamber together with the water.
  • the 1200 ° to 2000 ° C hot flame is passed through a cylinder tube into an oven for heating purposes.
  • a device for burning liquid and liquefiable fuels which consists of a cylindrical combustion chamber with an adjoining open top combustion chamber.
  • the liquid fuel is introduced radially or tangentially into the interior of the combustion chamber, air is supplied separately tangentially, the fuel touching the inner surface of the burner chamber and evaporating and burning there.
  • the temperatures in the furnace are between 1500 ° and 1800 ° C.
  • US Pat. No. 4,069,005 proposes the combustion of a water / fuel / air mixture in the presence of a metal catalyst (nickel), wherein a plurality of plates arranged one above the other are arranged in the interior of the burner, which can also consist of the metal catalyst in order to achieve the To increase the effectiveness of the cracking caused thereby.
  • a metal catalyst nickel
  • liquid fuels and water are dripped from above onto the plates of the metal catalyst arranged one above the other, which have been heated to above 800 ° C in a preheating phase.
  • the rising vapors are guided along the metal catalytic converters, whereby easily combustible, gaseous hydrocarbons are generated by cracking, which burn in the further course, whereby combustion gases of 800 ° to 1000 ° C are generated.
  • US Pat. No. 3,804,579 burns oil and air together with water vapor generated by the flame itself in a heat exchanger coil.
  • the extended flame burns here at approx. 730 ° C.
  • the simple combustion boiler cannot support the combustion process.
  • the object of the present invention is to provide a method for the environmentally friendly combustion of fuels of any physical state, possibly with the addition of water and / or an oxidizing agent, in which the fuel is burned completely and without residues with a high energy yield.
  • the reactor which is suitable for this purpose should be as maintenance-free as possible and with little design effort self-cleaning, optimize the combustion process in continuous operation.
  • the solid and / or liquid and / or gaseous fuel is conducted in an axial direction into a reaction chamber by means of compressed air under high pressure, the amount of compressed air injected corresponding to that amount of air required for complete combustion, the introduced mixture is directed onto a deflection surface in the interior of the reaction chamber, whereby it is further atomized, liquid components evaporate, solid sublimate and the mixture burns explosively before it can reach the wall or the bottom of the reaction chamber.
  • the explosive combustion process can be explained by the high degree of surface enlargement of the mixture fed into the reaction chamber: (a) the fuel supplied by compressed air is torn and atomized when it is injected into the reaction chamber, whereby
  • the existing pressure is still sufficient to direct the fuel at high speed onto a deflection surface in the interior of the reaction chamber, where an impact and reflection with further distribution and atomization are brought about.
  • water injected with compressed air is atomized into droplets as they enter the reaction chamber, which converts to water vapor and is distributed in all directions in the interior of the reaction chamber from the deflection surface.
  • the expansion caused by the sudden evaporation supports a mixing of the fuels with the existing compressed air and the water vapor, which results in an effective combustion, in particular of difficultly combustible fuel components. With this, a zen of fuel on the inner wall and an accumulation of residues on the bottom can be prevented so that the reactor cleans itself.
  • the compressed air stream can be injected into the reaction chamber at 2 to 10 bar, preferably at 3 to 5 bar. At these pressures, the combination of the atomization at the outlet from the feed line with that due to the impact on the deflection surface in the interior of the reaction chamber is particularly effective.
  • the fuels, the water and / or the oxidizing agent are each introduced into the compressed air stream separately or as a mixture via one or more Venturi tubes. Gaseous fuel can be fed into the reaction chamber on its own. This type of feed allows good dosing with little design effort and at the same time increases the atomizing effect when entering the reaction chamber.
  • the injection into the reaction chamber is carried out through a normal tube of small diameter without a nozzle attachment, which prevents the nozzle from becoming blocked when non-flammable residues or viscous components are burned when used oils are burnt.
  • the use of uniform Venturi pipes for the supply of fuel and water also reduces the design effort.
  • the inflow velocities of the mixture to be burned into the reaction chamber can be set such that the resulting combustion flame leaves the reaction chamber at least at the speed of sound and transports the thermal energy generated to the outside for further use. As described below, this can be further improved by suitable geometry of the reactor.
  • the ignition of the mixture in the reaction chamber is suitably carried out with a pilot flame or by means of a spark generated. It may be advisable to preheat fuels, water or air before introducing them into the reaction chamber by means of the waste heat generated during the combustion. Heavy oil in particular is easier to transport due to the resulting reduction in viscosity.
  • the flow dynamics of the combustion process can be influenced by inserts which can be introduced into the interior of the reaction chamber.
  • the reactor according to the invention has a hyperboloid-like reactor head which adjoins the outlet opening of the reaction chamber and widens in cross-section from there.
  • the combustion flame burns at this reactor head.
  • the nozzle-like geometry of the reactor leads to an acceleration of the fuel gases with the formation of a corresponding negative pressure in the mouth area of the reaction chamber, which results in a further acceleration of the substances to be burned inside the reaction chamber in the direction of the outlet opening, which has a positive effect on the combustion as well as the self-cleaning of the reactor.
  • the nozzle effect can be improved in that the reaction chamber tapers at least in its upper part in the direction of the outlet opening, it being possible for the tapering part to be designed in particular as a truncated pyramid or truncated cone.
  • the entire reaction chamber can also be hyperboloid-shaped in such a way that it tapers in the direction of the outlet opening.
  • the feed openings for the fuels (and the water) into the bottom of the reaction chambers it is advantageous to let the feed openings for the fuels (and the water) into the bottom of the reaction chambers, so that these are directed parallel to the axis of the reaction chamber.
  • the axis of the reaction chamber is determined as the preferred flow direction, in which a deflection surface can then be arranged for better distribution of the mixture to be burned, through which the mixture is first directed away from the axis of the reaction chamber, and then again due to said nozzle effect on the reactor Axis to be fed.
  • the outflow from the feed openings is favored due to the pressure conditions.
  • a cone directed with the tip against the flow direction of the fuel or a pyramid made of a refractory material and arranged in the interior of the reaction chamber along its axis can be used as the deflection surface.
  • the combustion process can thus be optimized by symmetrical distribution in the cross section of the reaction chamber of the physical quantities such as pressure, flow velocity, turbulence and temperature.
  • a metal catalyst in particular containing nickel, for example in the inner walls of the reaction chambers, in refractory inserts inside the reaction chamber or else in the deflection surface.
  • a high efficiency of catalytic cracking can be achieved with a flaky or porous metal catalyst with a large surface area.
  • the reactor can be made uniformly from a material such as stainless steel, but also at least partially from a particularly heat-resistant and mechanically resilient alloy such as a Ni-Mo-Cr-Co alloy ("Nimonic"). Furthermore, the reactor can be surrounded by an external insulation made of ceramic fibers or fiberglass in order to reduce the radiated heat and to keep the temperature in the reactor chamber above about 1000 ° C.
  • FIG. 1 shows a reactor according to the invention in a side view from obliquely below
  • Figure 2 shows the reactor viewed obliquely from above
  • Figure 3 shows the reactor viewed from the side.
  • the figures show the reactor 1 according to the invention with a reaction chamber 2, at the outlet opening 4 of which the reactor head 3 is connected.
  • Feed lines 5 and 6 are inserted in the coaxial direction in the center of the bottom of the reactor 1.
  • a cone 7 with the tip pointing in the direction of the feed lines 5 and 6 is attached as a deflection surface in the interior of the reaction chamber 2 along the axis.
  • the upper part of the reaction chamber 2 tapers hyperboloid-like in the direction of the outlet opening 4, in order to continue hyperboloid-like in the reactor head 3 from there.
  • This geometry causes a nozzle effect through which flowing gases are sucked out of the interior of the reaction chamber 2 due to the negative pressure in the region of the outlet opening and the reactor head, as a result of which the supply pressure in the feed lines 5 and 6 can additionally be reduced.
  • this enables the reactor to self-clean, since non-flammable particles and residues are drawn from the inside of the reactor by the suction effect. Such residues can be separated by filtering the combustion gases.
  • the reactor has a volume of about 15 liters and is made of stainless steel.
  • the reactor can be made from this material with wall thicknesses of 3 to 4 mm, for stainless steel these are 5 to 7 mm. It is advantageous for the reactor 1 to be externally insulated from a material consisting of ceramic fibers or fiberglass, which reduces the heat radiation and thus increases the temperature in the interior of the reactor.
  • liquid fuel namely waste oils and heavy oils of various compositions, as well as solid fuel, such as dried olive bagasse and sewage sludge
  • compressed air Sucked (not shown) storage containers When leaving the supply lines 5, the fuel flow tears, the fuel impinges at high speed on the deflection surface 7, from which the fuel is distributed symmetrically into the cross section of the reaction chamber.
  • Water sprayed in through a supply line 5 is atomized and evaporated on leaving the reaction chamber 2, and the water vapor is also distributed symmetrically in the reaction chamber 2. If necessary, further compressed air can be fed in via the supply line 6, in which the supply lines 5 are arranged, in order to provide the air quantity required for complete combustion.
  • the combustion process is controlled by measuring the temperature, the quantity and the chemical composition. composition of the combustion gases. The quantities of water, air and fuel supplied are controlled accordingly.
  • the structure of the reactor shown results in a symmetrical distribution of the physical variables of the combustion process, rotationally symmetrical with respect to the axis points of the reaction chambers 2.
  • the values of temperature, pressure and flow rate of the gases are approximately constant.
  • the temperatures increase from the bottom of the reaction chamber 2 to the outlet opening 4, the temperature gradient flattening due to the heat-conducting reactor walls in continuous operation.
  • the flow dynamics of the combustion process can be adjusted by changing the reactor geometry and the position and geometry of the deflection surface.
  • the fuels are completely burned in the reactor. Any non-combustible residues are transported out of the reactor interior by the suction effect and can be collected using a filter.
  • the nozzle effect of the reactor 1 can be adjusted together with the feed rate in such a way that the combustion gases leave the reactor head 3 at the speed of sound at a temperature of approximately 1200 to approximately 1500 ° C.
  • the hot combustion gases can be used to operate a liquid bed in which hot gas flows through sand.
  • Such liquid beds are mostly used for cleaning objects (eg paint residues).
  • Such an application is also suitable for the disposal of hazardous waste.
  • Biomass can be subjected to a pyrolysis process due to a targeted lack of air on the liquid bed, as a result of which solid and gaseous fuels, which can be fed directly to the process according to the invention, are obtained.
  • the fuel gases generated can also be used directly in an internal combustion engine to generate electricity.
  • Closing The combustion process according to the invention can be used for the combined generation of heat and electrical current, ie for the operation of both steam and gas turbines.
  • the invention enables environmentally friendly combustion of waste products which are difficult to dispose of, such as waste oils of various compositions, sewage sludge, olive bagasse, mineral coal and other combustible waste products.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Manufacture Of Iron (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
EP98959868A 1997-11-10 1998-11-10 Dispositif et reacteur pour la combustion de combustibles Expired - Lifetime EP1031000B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19749688A DE19749688A1 (de) 1997-11-10 1997-11-10 Verfahren zur Verbrennung organischer Brennstoffe und Brenner hierfür
DE19749688 1997-11-10
PCT/EP1998/007175 WO1999024756A1 (fr) 1997-11-10 1998-11-10 Dispositif et reacteur pour la combustion de combustibles

Publications (2)

Publication Number Publication Date
EP1031000A1 true EP1031000A1 (fr) 2000-08-30
EP1031000B1 EP1031000B1 (fr) 2001-08-29

Family

ID=7848212

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98959868A Expired - Lifetime EP1031000B1 (fr) 1997-11-10 1998-11-10 Dispositif et reacteur pour la combustion de combustibles

Country Status (16)

Country Link
US (1) US6575733B1 (fr)
EP (1) EP1031000B1 (fr)
JP (1) JP3509753B2 (fr)
CN (1) CN1153925C (fr)
AT (1) ATE204974T1 (fr)
AU (1) AU734573C (fr)
CA (1) CA2309650C (fr)
DE (2) DE19749688A1 (fr)
DK (1) DK1031000T3 (fr)
ES (1) ES2163304T3 (fr)
HK (1) HK1030448A1 (fr)
NO (1) NO318705B1 (fr)
PL (1) PL193419B1 (fr)
PT (1) PT1031000E (fr)
RU (1) RU2198349C2 (fr)
WO (1) WO1999024756A1 (fr)

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DE10158295B4 (de) 2001-11-23 2005-11-24 Bramble-Trading Internacional Lda, Funchal Strömungskörper
CN1300503C (zh) * 2004-11-08 2007-02-14 崇庆华 一种利用废油料在燃烧器中的燃烧方法
KR101080527B1 (ko) 2005-09-20 2011-11-04 이데미쓰 고산 가부시키가이샤 스퍼터링 타겟, 투명 도전막 및 투명 전극
CN101761919B (zh) * 2008-12-24 2012-07-18 许金聪 生物燃料爆化燃烧系统
ITTO20110826A1 (it) * 2011-09-15 2013-03-16 Guido Parisi Centrale domestica a piu' funzioni, dispositivo per la sua alimentazione con idrogeno e metodo di funzionamento della stessa
RU2674958C2 (ru) * 2013-09-20 2018-12-13 Спрэинг Системс Ко. Распылительная форсунка для флюидизированного каталитического крекинга
RU2676617C2 (ru) * 2013-09-20 2019-01-09 Спрэинг Системс Ко. Система каталитического крекинга, содержащая узел распылительной форсунки с удлинителем впуска жидкого углеводорода и распылителем
US10201794B2 (en) * 2013-09-20 2019-02-12 Spraying Systems Co. High efficiency/low pressure catalytic cracking spray nozzle assembly
EP3068545A4 (fr) * 2013-11-12 2017-04-26 Spraying Systems Co. Buse de pulvérisation pour craquage catalytique avec bague intérieure de dispersion des particules de liquide
KR101452423B1 (ko) 2013-12-10 2014-10-22 금호석유화학 주식회사 고속 분사를 이용한 이종 유체의 혼합반응기
JP5815087B2 (ja) * 2013-12-10 2015-11-17 コリア クムホ ペトロケミカル カンパニー．， リミテッド 高速噴射を利用した異種流体の混合反応器
CN108019740A (zh) * 2017-11-20 2018-05-11 徐州工程学院 一种生物质燃料锅炉装置及其工作方法
CN111157576B (zh) * 2020-01-16 2024-06-14 天津大学 用于离心旋转状态下火焰观测的固体燃烧反应器

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Also Published As

Publication number Publication date
NO20002364D0 (no) 2000-05-05
CN1281544A (zh) 2001-01-24
HK1030448A1 (en) 2001-05-04
WO1999024756A1 (fr) 1999-05-20
CN1153925C (zh) 2004-06-16
NO318705B1 (no) 2005-04-25
AU734573B2 (en) 2001-06-14
ES2163304T3 (es) 2002-01-16
JP2001522979A (ja) 2001-11-20
DE59801352D1 (de) 2001-10-04
EP1031000B1 (fr) 2001-08-29
AU734573C (en) 2001-11-29
PT1031000E (pt) 2002-02-28
AU1561499A (en) 1999-05-31
PL193419B1 (pl) 2007-02-28
DE19749688A1 (de) 1999-05-12
CA2309650A1 (fr) 1999-05-20
ATE204974T1 (de) 2001-09-15
US6575733B1 (en) 2003-06-10
RU2198349C2 (ru) 2003-02-10
DK1031000T3 (da) 2001-12-27
CA2309650C (fr) 2006-01-31
PL340823A1 (en) 2001-02-26
JP3509753B2 (ja) 2004-03-22
NO20002364L (no) 2000-05-05

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