GB2059044A - A combustion device for burning an air-solvent mixture - Google Patents

A combustion device for burning an air-solvent mixture Download PDF

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Publication number
GB2059044A
GB2059044A GB8027143A GB8027143A GB2059044A GB 2059044 A GB2059044 A GB 2059044A GB 8027143 A GB8027143 A GB 8027143A GB 8027143 A GB8027143 A GB 8027143A GB 2059044 A GB2059044 A GB 2059044A
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GB
United Kingdom
Prior art keywords
chamber
combustion
air
burner
combustion chamber
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Withdrawn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
GB8027143A
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.)
Forcesi G O
Original Assignee
Forcesi G O
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 Forcesi G O filed Critical Forcesi G O
Publication of GB2059044A publication Critical patent/GB2059044A/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F23G5/44—Details; Accessories
    • F23G5/46—Recuperation of heat
    • 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
    • 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
    • F23L15/00—Heating of air supplied for combustion
    • F23L15/04—Arrangements of recuperators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/02—Heating arrangements using combustion heating
    • F26B23/022—Heating arrangements using combustion heating incinerating volatiles in the dryer exhaust gases, the produced hot gases being wholly, partly or not recycled into the drying enclosure
    • 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
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Incineration Of Waste (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

A combustion device for burning an air-solvent mixture, for example, from a drying furnace for drying pieces painted with solvent paints, is disclosed. The device comprises a combustion chamber 3 associated with at least one primary burner 4 located on the axis or parallel to the axis of the combustion chamber 3, and at least one secondary burner 5 directed tangentially with respect to the chamber 3. The burner 5 is displaced, preferably by 180 DEG , with respect to at least one inlet 2, which is also directed tangentially with respect to the combustion chamber 3 and through which the solvents are supplied in a gas mixture with air drawn from the drying furnace by at least one extractor 1. <IMAGE>

Description

SPECIFICATION A combustion device for burning an airsolvent mixture The invention relates to a combustion device for burning an air-solvent mixture, for example solvents discharged from a drying furnace for drying metal pieces, for example sheets or plates, to which solvent paints have been applied.
According to my invention a combustion device for burning an air-solvent mixture comprises a combustion chamber, a supply arranged in a tangential direction with respect to the chamber and through which the airsolvent mixture is supplied to the chamber, at least one primary burner aligned with or parallel to the axis of the chamber, and at least one secondary burner arranged in a tangential direction with respect to the chamber.
This achieves a very high recirculation within the chamber with a resultant increase in the passage of the solvents through the burner flames to produce very good combustion in a reduced space.
The heat produced by combustion of the solvents within the chamber can be utilised for useful purposes, thereby avoiding any pollution or the necessity for providing complicated recovery equipment which would otherwise involve substantial operating costs.
An embodiment of a combustion device according to the invention is illustrated in the accompanying drawings in which: Figure 1 is an axial sectional view of the device; and Figure 2 is a transverse sectional view of the device at right angles to the section of Fig. 1.
An air-solvent mixture is extracted, for example, from a drying furnace for paints applied on metal pieces, such as sheets or plates, by means of an extractor 1, herein shown as a centrifugal fan. The mixture is fed from the extractor 1 to a delivery conduit 2 which opens tangentially into a combustion chamber 3. The combustion chamber 3 is associated with an axially arranged primary burner 4 of the high speed type which is axially aligned with the combustion chamber 3, and is operated by liquid or gas fuels and combustion air preheated by a proportion of the combustion products being produced in the combustion chamber 3.
The combustion chamber 3 is also associated with a secondary burner 5, which is also tangentially directed into the combustion chamber 3, but which is displaced through 180 with respect to the delivery conduit 2 for the air-solvent mixture. As shown, the axes of the outlets of the delivery conduit 2 and the secondary burner 5 lie in a common transverse plane of the combustion chamber 3.
More than one axial burner 4 and more than on tangential burner 5 may be provided.
The axial burner or burners 4 are adjusted independently of the tangential burner or burners 5. The burners 5 may be extinguished as combustion of the solvents takes place, while the other or axial burners 4 may be kept ignited so that the temperature is maintained when the solvents become exhausted, which occurs rather frequently even during continuous operation of the drying furnace. Even when the tangential burners 5 are extinguished, that is when they are not supplied with fuel, the tangential burners 5 can deliver air to the combustion chamber 3 to ensure that the solvents are oxidized.
Smoke is discharged from the combustion chamber 3 partly through an end port 6 and partly through a secondary port 7. The most important fraction emitting from the port 6 may be returned to the drying furnace, or used for giving off its heat to another fluid or medium, whilst the minor fraction emitting from the port 7 passes through a heat exchanger 8 which is located in a chamber 9 disposed over the combustion chamber 3.
Prior to exhaust to a stack through a port 10, this minor fraction of smoke is circulated through a tube battery 11 of the heat exchanger 8 by air which is circulated by a centrifual fan 1 2. This air is discharged through a conduit 1 3 which carries preheated air to the burners 4 and 5. Of course, this minor fraction which is discharged from the port 10 may, if it is still at a sufficiently high temperature, be used for giving off heat to other fluids or media.
1. A combustion device for burning an airsolvent mixture comprising a combustion chamber, a supply arranged in a tangential direction with respect to the chamber and through which the air-solvent mixture is supplied to the chamber, at least one primary burner aligned with or parallel to the axis of the chamber, and at least one secondary burner arranged in a tangential direction with respect to the chamber.
2. A device according to Claim 1, in which the secondary burner and the gassolvent mixture supply are relatively displaced by substantially 1 80'.
3. A device according to Claim 1 or Claim 2, in which the primary burner is adjustable independently of the secondary burner, which is adapted to be extinguished, while the primary burner is ignited, the secondary burner even when extinguished being adapted to supply air to the combustion chamber.
4. A device according to any preceding claim, in which the burners are of the high speed type.
5. A device according to any preceding claim, in which the secondary burner and air
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (8)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A combustion device for burning an airsolvent mixture The invention relates to a combustion device for burning an air-solvent mixture, for example solvents discharged from a drying furnace for drying metal pieces, for example sheets or plates, to which solvent paints have been applied. According to my invention a combustion device for burning an air-solvent mixture comprises a combustion chamber, a supply arranged in a tangential direction with respect to the chamber and through which the airsolvent mixture is supplied to the chamber, at least one primary burner aligned with or parallel to the axis of the chamber, and at least one secondary burner arranged in a tangential direction with respect to the chamber. This achieves a very high recirculation within the chamber with a resultant increase in the passage of the solvents through the burner flames to produce very good combustion in a reduced space. The heat produced by combustion of the solvents within the chamber can be utilised for useful purposes, thereby avoiding any pollution or the necessity for providing complicated recovery equipment which would otherwise involve substantial operating costs. An embodiment of a combustion device according to the invention is illustrated in the accompanying drawings in which: Figure 1 is an axial sectional view of the device; and Figure 2 is a transverse sectional view of the device at right angles to the section of Fig. 1. An air-solvent mixture is extracted, for example, from a drying furnace for paints applied on metal pieces, such as sheets or plates, by means of an extractor 1, herein shown as a centrifugal fan. The mixture is fed from the extractor 1 to a delivery conduit 2 which opens tangentially into a combustion chamber 3. The combustion chamber 3 is associated with an axially arranged primary burner 4 of the high speed type which is axially aligned with the combustion chamber 3, and is operated by liquid or gas fuels and combustion air preheated by a proportion of the combustion products being produced in the combustion chamber 3. The combustion chamber 3 is also associated with a secondary burner 5, which is also tangentially directed into the combustion chamber 3, but which is displaced through 180 with respect to the delivery conduit 2 for the air-solvent mixture. As shown, the axes of the outlets of the delivery conduit 2 and the secondary burner 5 lie in a common transverse plane of the combustion chamber 3. More than one axial burner 4 and more than on tangential burner 5 may be provided. The axial burner or burners 4 are adjusted independently of the tangential burner or burners 5. The burners 5 may be extinguished as combustion of the solvents takes place, while the other or axial burners 4 may be kept ignited so that the temperature is maintained when the solvents become exhausted, which occurs rather frequently even during continuous operation of the drying furnace. Even when the tangential burners 5 are extinguished, that is when they are not supplied with fuel, the tangential burners 5 can deliver air to the combustion chamber 3 to ensure that the solvents are oxidized. Smoke is discharged from the combustion chamber 3 partly through an end port 6 and partly through a secondary port 7. The most important fraction emitting from the port 6 may be returned to the drying furnace, or used for giving off its heat to another fluid or medium, whilst the minor fraction emitting from the port 7 passes through a heat exchanger 8 which is located in a chamber 9 disposed over the combustion chamber 3. Prior to exhaust to a stack through a port 10, this minor fraction of smoke is circulated through a tube battery 11 of the heat exchanger 8 by air which is circulated by a centrifual fan 1 2. This air is discharged through a conduit 1 3 which carries preheated air to the burners 4 and 5. Of course, this minor fraction which is discharged from the port 10 may, if it is still at a sufficiently high temperature, be used for giving off heat to other fluids or media. CLAIMS
1. A combustion device for burning an airsolvent mixture comprising a combustion chamber, a supply arranged in a tangential direction with respect to the chamber and through which the air-solvent mixture is supplied to the chamber, at least one primary burner aligned with or parallel to the axis of the chamber, and at least one secondary burner arranged in a tangential direction with respect to the chamber.
2. A device according to Claim 1, in which the secondary burner and the gassolvent mixture supply are relatively displaced by substantially 1 80'.
3. A device according to Claim 1 or Claim 2, in which the primary burner is adjustable independently of the secondary burner, which is adapted to be extinguished, while the primary burner is ignited, the secondary burner even when extinguished being adapted to supply air to the combustion chamber.
4. A device according to any preceding claim, in which the burners are of the high speed type.
5. A device according to any preceding claim, in which the secondary burner and air solvent supply lie in a common transverse plane of the combustion chamber.
6. A device as claimed in any preceding claim in which the air-solvent mixture comprises solvents extracted from a drying furnace for drying metal pieces to which solvent paints have been applied.
7. A device as claimed in Claim 6, in which the smoke discharged from the chamber is divided into two fractions, of which one is adapted to be returned to the furnace and the other is used for preheating the air for the burners.
8. A combustion device for burning an airsolvent mixture substantially as described herein with reference to and as illustrated in the accompanying drawings.
GB8027143A 1979-09-21 1980-08-20 A combustion device for burning an air-solvent mixture Withdrawn GB2059044A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT7925949A IT7925949A0 (en) 1979-09-21 1979-09-21 COMBUSTION DEVICE FOR THE RECOVERY OF SOLVENTS IN THE FORM OF HEAT.

Publications (1)

Publication Number Publication Date
GB2059044A true GB2059044A (en) 1981-04-15

Family

ID=11218235

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8027143A Withdrawn GB2059044A (en) 1979-09-21 1980-08-20 A combustion device for burning an air-solvent mixture

Country Status (4)

Country Link
DE (1) DE3031935A1 (en)
ES (1) ES8107383A1 (en)
GB (1) GB2059044A (en)
IT (1) IT7925949A0 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2268578A (en) * 1992-07-11 1994-01-12 Nu Way Limited Improvements in or relating to burners
WO1996024008A1 (en) * 1995-02-02 1996-08-08 Aquavir Systeme, S.A. Apparatus for heat treating a mass of material using a gaseous heat-transfer fluid
CN105300086A (en) * 2015-11-12 2016-02-03 程炽坤 Drying stove
CN105300046A (en) * 2015-11-12 2016-02-03 程炽坤 Multi-layer drying chamber
CN105300083A (en) * 2015-11-12 2016-02-03 程炽坤 Novel drying furnace
CN105300059A (en) * 2015-11-12 2016-02-03 程炽坤 Interlaced type multi-layer drying chamber

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3729971A1 (en) * 1987-09-08 1989-03-16 Wuenning Joachim HOT GAS GENERATING DEVICE WITH THERMAL AFTERBURN
DE3842642A1 (en) * 1988-12-18 1990-07-05 Bookmann Gmbh METHOD AND DEVICE FOR DRINKING OR COATING OBJECTS
DE10036774A1 (en) * 2000-07-28 2002-02-14 Aichelin Gmbh Furnace used for thermally cleaning waste gases produced during the treatment of workpieces has an eddying effect in the region of the combustion chamber so that waste gases produced

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2268578A (en) * 1992-07-11 1994-01-12 Nu Way Limited Improvements in or relating to burners
GB2268578B (en) * 1992-07-11 1995-11-22 Nu Way Limited Improvements in or relating to burner units
WO1996024008A1 (en) * 1995-02-02 1996-08-08 Aquavir Systeme, S.A. Apparatus for heat treating a mass of material using a gaseous heat-transfer fluid
FR2730296A1 (en) * 1995-02-02 1996-08-09 Aquavir Systeme PLANT FOR HEAT TREATMENT OF A MASS OF MATERIAL USING A GAS HEAT TRANSFER FLUID
CN105300086A (en) * 2015-11-12 2016-02-03 程炽坤 Drying stove
CN105300046A (en) * 2015-11-12 2016-02-03 程炽坤 Multi-layer drying chamber
CN105300083A (en) * 2015-11-12 2016-02-03 程炽坤 Novel drying furnace
CN105300059A (en) * 2015-11-12 2016-02-03 程炽坤 Interlaced type multi-layer drying chamber

Also Published As

Publication number Publication date
DE3031935A1 (en) 1981-04-09
ES495209A0 (en) 1981-10-01
IT7925949A0 (en) 1979-09-21
ES8107383A1 (en) 1981-10-01

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)