EP0686250A1 - Dispositif et procede permettant de bruler des constituants oxydables dans un gaz porteur a epurer - Google Patents

Dispositif et procede permettant de bruler des constituants oxydables dans un gaz porteur a epurer

Info

Publication number
EP0686250A1
EP0686250A1 EP94909051A EP94909051A EP0686250A1 EP 0686250 A1 EP0686250 A1 EP 0686250A1 EP 94909051 A EP94909051 A EP 94909051A EP 94909051 A EP94909051 A EP 94909051A EP 0686250 A1 EP0686250 A1 EP 0686250A1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
main combustion
gas
flame tube
guide element
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
EP94909051A
Other languages
German (de)
English (en)
Other versions
EP0686250B1 (fr
Inventor
Gert Rentzel
Joachim Saggel
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.)
Sequa & Co Megtec Systems KG GmbH
Original Assignee
Grace GmbH
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 Grace GmbH filed Critical Grace GmbH
Publication of EP0686250A1 publication Critical patent/EP0686250A1/fr
Application granted granted Critical
Publication of EP0686250B1 publication Critical patent/EP0686250B1/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
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator

Definitions

  • the invention relates to a device for burning oxidizable constituents in a carrier gas to be cleaned, comprising a gas inlet, a burner with a subsequent flame tube, which opens into a main combustion chamber comprising bottom and side walls, one preferably on the side of the bottom opposite the bottom wall Main combustion chamber located combustion chamber outlet, a heat exchanger and a gas outlet.
  • the invention relates to a method for burning oxidizable constituents in a carrier gas to be cleaned in a device comprising a main combustion chamber starting from the flame tube and delimited by bottom and side walls, in which cleaned gas from the bottom wall in the direction of a coaxial radial or tangential is deflected to the flame tube arranged combustion chamber outlet.
  • a device of the type described above is e.g. B. EP 0 235 277 B1 to take.
  • the flame tube designated as a high-speed mixing chamber opens into the main combustion chamber, the cross section of which is larger than the free flow cross section in the high-speed mixing chamber.
  • the main combustion chamber extends on the outside along the high-speed mixing chamber, which is designed as a tube, in order to merge into an annular channel which runs coaxially to the high-speed mixing chamber and which in turn leads into a likewise around the high-speed mixing chamber.
  • Mixing chamber and partially around the annular channel arranged further channel-like annular space passes, in which a heat exchanger is arranged, the tubes are bent outwards at their colder ends.
  • the main combustion chamber the flow cross section of which is also larger than that of the high-speed mixing chamber, extends completely along the high-speed mixing chamber and then preferably opens radially into a heat exchanger, which is preferably arranged in an annular channel.
  • the gas leaves the high-speed mixing space in the form of a free jet.
  • This jet strikes the bottom wall of the main combustion chamber and is distributed there in a rotationally symmetrical manner in accordance with the flow geometry of a baffle plate flow.
  • High centrifugal forces cause the gas to flow axially along the inner wall of the combustion chamber, both along the bottom wall and after a further deflection, like an annular jet.
  • the cross-sectional area of this ring jet increases only slightly along the side wall of the main combustion chamber up to the combustion chamber outlet, so that a stationary vortex area is formed between the ring jet and the outer wall of the high-speed mixing chamber.
  • the present invention is based on the problem of developing a device or a method of the type described above in such a way that the volume of the main combustion chamber is optimally used for the combustion of the oxidizable constituents in the carrier gas.
  • this object is essentially achieved in that the main combustion chamber is designed and / or has at least one guide element in such a way that the gas flowing from the bottom wall in the direction of the combustion chamber outlet is evenly distributed over the cross section of the main combustion chamber.
  • the guide element can be a guide plate, a perforated plate and / or a guide ring or similar flow distribution device such as e.g. Reflector cones, conical baffles and guide vanes. At least two guide elements are preferably arranged in the main combustion chamber.
  • An embodiment of the invention provides that the guide element is formed symmetrically to a plane in which the longitudinal axis of the main combustion chamber runs.
  • the guide element can be rotationally symmetrical to the longitudinal axis.
  • the guide element can also be an aperture such as a resistance grid.
  • the guide element or elements are preferably arranged between the outlet opening of the flame tube and the bottom wall of the main combustion chamber.
  • the guide elements can also be arranged coaxially around the flame tube, or it can be arranged both between the outlet opening of the flame tube and the bottom wall and coaxially to the flame tube.
  • the teaching of the invention distributes the flow of the gas mixture throughout the main combustion chamber.
  • the device according to the invention has the particular advantage that a significant reduction in the main combustion chamber temperature or a reduction in the main combustion chamber volume with a constant residual concentration of oxidizable constituents in the purified carrier gas or a reduced residual concentration with a constant main combustion chamber temperature and constant main combustion chamber volume can be achieved.
  • the invention is characterized in that the partially cleaned gas, in particular deflected from the bottom wall in the direction of the combustion chamber outlet, is guided in such a way that the gas flows evenly distributed over the cross section of at least a section of the main combustion chamber.
  • the deflected gas can be guided to the combustion chamber outlet essentially without turbulence and backflow. This results in the complete utilization of the combustion chamber and prevents mixing of more strongly cleaned gas with less strongly cleaned gas.
  • Fig. 1 shows a first embodiment of a device for burning oxidizable components in a carrier gas to be cleaned
  • Fig. 2 shows a second embodiment of a device.
  • the devices (10) each comprise a cylindrical outer jacket (12) which is delimited by the end walls (14) and (16). 1, the one end wall (16) is at the same time the floor (21) of a main combustion chamber (24), while in FIG. 2 the end wall delimits an inlet annular space (45), the opposite wall of which is also the floor (21) of a main combustion chamber (24) is.
  • a burner (19) is arranged concentrically to the longitudinal axis of the device in each case in the region of the end wall (14), followed by a flame tube (22), which is preferably designed as a high-speed mixing chamber, and the main combustion chamber (24). It is not necessary that the flame tube (22) in the Main combustion chamber (24) protrudes.
  • the main combustion chamber (24) is divided into a first section (23) with a large cross-sectional area and a second section (25) with a small cross-sectional area.
  • the first section (23) is arranged annularly to the axis (18) of the device (10) and is delimited by the end wall (16), by sections (17) of the outer casing (12) and by an intermediate wall (50).
  • the second section (25) of the main combustion chamber is an annular space around the flame tube (22), starting from the intermediate wall (50) and ending in a further annular space (28), in the heat exchanger tubes (30) of a cross-counterflow heat exchanger (32) concentrically Axis (18) of the device (10) and thus also concentric to the flame tube (22) are arranged.
  • the heat exchanger tubes (30) open into an outer annular space (34) adjacent to the outer wall (12), in which there is an inlet opening (36). Between the outer annular space (34) and the end wall (16) delimiting the main combustion space (24), the annular space (28) having the heat exchanger tubes (30) opens into an outlet (38) which penetrates the outer wall (12) of the device (10) .
  • the flame tube (22) is completely surrounded by the main combustion chamber (24) and opens directly radially into an annular space (28) which is concentrically arranged to the axis (18) of the device (10) and contains heat exchanger tubes (30).
  • the heat exchanger tubes (30) open on the opposite side into the inlet annular space (45) located inside the outer casing (12), which through a section of the outer casing (12), the frontal floor (16), the combustion chamber floor (21), sections of the jacket (20) surrounding the main combustion chamber (24) and an intermediate wall (53) designed as a tube sheet is limited and has a nozzle-shaped inlet opening (36) for the carrier gas.
  • guide elements (40) are located in the main combustion chambers (24),
  • the guide elements can guide the flow both through low form resistances and through large form resistances.
  • the guide elements (40) and (42) in the form of a guide ring or guide plate form a low form resistance
  • guide elements (44) in the form of perforated plates or resistance grids or in the form of diaphragms form a large form resistance.
  • the shape of the guide elements in particular the guide elements (40) and (42), must be such that partial volume flows of the rotationally symmetrical flow are sheared off onto the floor (21) of the main combustion chamber (24). and a deflection by 90 ° in the direction of the combustion chamber outlet (26) is effected.
  • the guide element (44) surrounding the end region of the flame tube (22) in the form of a perforated plate, resistance grille, orifice or the like in each of the exemplary embodiments represents a high flow resistance, which due to the high speeds in free cross-sectional areas present in the guide element Distribution of a flow formed on one side on the outer jacket of the main combustion chamber (24) over the entire cross-sectional area of the main combustion chamber (24).
  • Raw gas laden with pollutants that is to say carrier gas containing oxidizable constituents, enters the device (10) through the gas inlet (36) designed as an inlet connection, is passed through the heat exchanger tubes (30) arranged concentrically to the flame tube (22) and leaves in one
  • the heat exchanger (32) is arranged coaxially with the burner (19) and is delimited by the end wall (14) and is at least partially guided past the burner (19).
  • preheating takes place by taking up heat via the heat exchanger tubes (30) from the gas which has exited the main combustion chamber (24) and flows around the heat exchanger tubes (30).
  • Part of the preheated polluted raw gas comes into contact with the flame of the burner (19) and serves as the combustion gas.
  • the other part flows past the burner (19) or the flame.
  • the flame tube (22) Since almost the entire length of the flame tube (22) is required in order to mix the colder ring flow in the flame tube flowing through the gap (48) and bypassing the burner (19) with the hotter core flow which is passed through the burner (19) , and therefore there is a temperature difference between the inside of the flame tube wall and the outside of the flame tube wall, a heat exchange takes place between the hot carrier gas in the second section (25) of the main combustion chamber (24) and the colder, cleaned carrier gas in the flame tube (22). Consequently, the flame tube (22) serves as an additional heat exchanger surface.
  • the heat exchange causes a temperature difference of 20 ° C to 60 ° C during stationary operation between the entry into the second section (25) of the main combustion chamber (24) and the exit (26) from the main combustion chamber, i.e. the entry into the annular space ( 28) in which the heat exchanger (32) is arranged.
  • the cleaned carrier gas is then passed around the heat exchanger tubes (30) of the shell-and-tube heat exchanger (32), emits heat to the carrier gas to be cleaned and is passed to the gas outlet (38) which is also designed as a nozzle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Gas Burners (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant de brûler des constituants oxydables dans un gaz porteur à épurer. Le dispositif comprend un orifice d'admission du gaz (36), un brûleur (19) muni d'un tube-foyer (22) qui débouche dans une chambre de combustion principale (24) comprenant une paroi de fond et des parois latérales, une chambre annulaire partant du côté de la chambre de combustion principale opposée à la paroi de fond (21), un échangeur de chaleur (32) autour duquel le gaz épuré circule et à travers lequel le gaz à épurer passe, ainsi qu'un orifice de sortie du gaz (38). Afin de parvenir à une bonne combustion tout en ayant une structure compacte, notamment pour exploiter de manière optimale le temps de séjour géométrique dans la chambre de combustion principale, il est prévu que celle-ci soit conçue de telle manière et/ou qu'elle comporte des éléments de guidage (40, 42, 44) tels que le gaz qui circule depuis la paroi du fond en direction de la chambre annulaire, soit réparti uniformément ou largement uniformément au-dessus de la section transversale de la chambre de combustion principale.
EP94909051A 1993-03-02 1994-02-25 Dispositif et procede permettant de bruler des constituants oxydables dans un gaz porteur a epurer Expired - Lifetime EP0686250B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4306417A DE4306417A1 (de) 1993-03-02 1993-03-02 Vorrichtung und Verfahren zum Verbrennen oxidierbarer Bestandteile in einem zu reinigenden Trägergas
DE4306417 1993-03-02
PCT/EP1994/000539 WO1994020792A1 (fr) 1993-03-02 1994-02-25 Dispositif et procede permettant de bruler des constituants oxydables dans un gaz porteur a epurer

Publications (2)

Publication Number Publication Date
EP0686250A1 true EP0686250A1 (fr) 1995-12-13
EP0686250B1 EP0686250B1 (fr) 1998-09-23

Family

ID=6481705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94909051A Expired - Lifetime EP0686250B1 (fr) 1993-03-02 1994-02-25 Dispositif et procede permettant de bruler des constituants oxydables dans un gaz porteur a epurer

Country Status (10)

Country Link
US (1) US5709542A (fr)
EP (1) EP0686250B1 (fr)
AT (1) ATE171537T1 (fr)
AU (1) AU684752B2 (fr)
CA (1) CA2157502A1 (fr)
CZ (1) CZ289079B6 (fr)
DE (2) DE4306417A1 (fr)
ES (1) ES2124875T3 (fr)
HU (1) HU218077B (fr)
WO (1) WO1994020792A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29612352U1 (de) * 1996-07-17 1997-02-13 Paul Schneider Rohrleitungsbau und Wärmetechnik GmbH, 96472 Rödental Brennkammer zum Betrieb einer Trocknungsanlage mit Multifunktionsbrennereinrichtung und Pralleinrichtung zur energiesparenden und emissionsarmen Trocknung
US5944512A (en) * 1998-08-10 1999-08-31 Ludwig; Mark Heating and incineration device
FR2785365B1 (fr) * 1998-11-02 2000-12-29 Alstom Technology Chambre de combustion destinee a epurer un effluent gazeux pourvue de moyens mecaniques permettant d'homogeneiser l'ecoulement dudit effluent gazeux
DE19937116A1 (de) * 1999-08-06 2001-02-08 Bayer Ag Moxifloxacin Kochsalzformulierung
US20020164409A1 (en) 2001-05-02 2002-11-07 Raffael Sandolo Coffee roasting apparatus and method
DE102007006268B3 (de) * 2007-02-08 2008-05-29 Probat-Werke Von Gimborn Maschinenfabrik Gmbh Vorrichtung und Verfahren zur Wärmebehandlung eines schüttfähigen pflanzlichen Gutes
US20080241774A1 (en) * 2007-03-30 2008-10-02 Pierangelo Ghilardi Compact apparatus for generating a hot air flow with a gas burner
US8784096B2 (en) * 2009-09-29 2014-07-22 Honeywell International Inc. Low NOx indirect fire burner
DE102010030832B4 (de) * 2010-07-01 2014-04-03 Sgl Carbon Se Vorrichtung zur HCI-Synthese mit Dampferzeugung
CN102721071B (zh) * 2012-02-03 2014-10-29 常州市鼎龙环保设备有限公司 废气焚烧炉
CN102705817A (zh) * 2012-02-03 2012-10-03 常州市鼎龙环保设备有限公司 用于废气焚烧炉的天然气燃烧室
US8679561B2 (en) * 2012-06-21 2014-03-25 Loring Smart Roast, Inc. Smokeless coffee roaster
DE102014018178A1 (de) * 2014-12-09 2016-06-09 Eisenmann Se Thermische Nachverbrennungsanlage

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
CH361904A (de) * 1958-04-18 1962-05-15 Oelfeuerungen Ag Auskleidung in ölbefeuertem Wasserkessel
DE2352204B2 (de) * 1973-10-18 1976-01-22 Katec Katalytische Lufttechnik Betz & Co, 6461 Neuenhaßlau Verbrennungseinrichtung zur verbrennung von stoerstoffen in abgasen
DE7909153U1 (de) * 1979-03-30 1979-07-05 W. Ernst Haas + Sohn, 6349 Sinn Umkehrbrennkammer fuer einen waermetauscher
FR2556446B1 (fr) * 1983-12-13 1989-03-03 Heckmann Emile Procede de desodorisation d'effluents gazeux par oxydation thermique dans un generateur a pre-pyrolyse et a recuperation de chaleur, et generateur pour la mise en oeuvre de ce procede
SE442053B (sv) * 1984-04-17 1985-11-25 Nils Axel Ambjoern Oestbo Turbulator
DE3521044A1 (de) * 1985-06-12 1986-12-18 Eduard 8491 Windischbergerdorf Wandzel Glueheinsatz fuer oefen, insbesondere heizungskessel
DE3532232A1 (de) * 1985-09-10 1987-03-19 Katec Betz Gmbh & Co Vorrichtung zum verbrennen oxidierbarer bestandteile in einem traegergas

Non-Patent Citations (1)

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Title
See references of WO9420792A1 *

Also Published As

Publication number Publication date
ATE171537T1 (de) 1998-10-15
EP0686250B1 (fr) 1998-09-23
HUT72856A (en) 1996-05-28
CZ222395A3 (en) 1996-05-15
DE4306417A1 (de) 1994-09-08
AU6205694A (en) 1994-09-26
US5709542A (en) 1998-01-20
HU9502521D0 (en) 1995-10-30
ES2124875T3 (es) 1999-02-16
CZ289079B6 (cs) 2001-10-17
HU218077B (hu) 2000-05-28
DE59406977D1 (de) 1998-10-29
AU684752B2 (en) 1998-01-08
CA2157502A1 (fr) 1994-09-15
WO1994020792A1 (fr) 1994-09-15

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