US3627284A - Heat regenerator particularly hot blast stoves for a blast furnace - Google Patents

Heat regenerator particularly hot blast stoves for a blast furnace Download PDF

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Publication number
US3627284A
US3627284A US867301A US3627284DA US3627284A US 3627284 A US3627284 A US 3627284A US 867301 A US867301 A US 867301A US 3627284D A US3627284D A US 3627284DA US 3627284 A US3627284 A US 3627284A
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US
United States
Prior art keywords
conduit
conduits
pressure
combustion
heat generator
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Expired - Lifetime
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US867301A
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English (en)
Inventor
Jacobus Van Laar
Johannes H W Ouwerkerk
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Didier Werke AG
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Didier Werke AG
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B9/00—Stoves for heating the blast in blast furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/70—Baffles or like flow-disturbing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D17/00—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
    • 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
    • F23D2900/21—Burners specially adapted for a particular use
    • F23D2900/21001—Burners specially adapted for a particular use for use in blast furnaces

Definitions

  • the invention relates to a heat regenerator particularly a hot blast stove for blast furnaces with a vertical burner installed inside the combustion chamber having one vertical conduit for the supply of gaseous fuel and a second conduit coaxial with the first conduit for the supply of combustion air.
  • Hot blast stoves for blast furnaces are generally used to increase the efficiency degree of a blast furnace by heating the so-called wind before it blows into the blast furnace. For this purpose the wind is led through the hot blast stove, once the stove has been preheated by the combustion of gas.
  • Hot blast stoves are known having a combustion chamber located inside and outside, which means that the chamber where the combustion takes place can be inside or outside a structure which contains a lattice work which is to be heated by the combustion air. This invention refers to both types of hot blast stoves as well as to other similar heat generators which for instance are common in the ceramic industry.
  • Lately vertical, and mainly ceramic burners have been developed for hot blast stoves, which allow a more complete combustion of the gaseous fuel and at the same time preserve better the walls of the combustion chamber than the common burners. By giving the burner an adequate shape it has been achieved that the mixture of gas and air were improved to such an extent that the combustion became more economical.
  • An object of the invention is to improve the distribution of gas and air, by putting into at least the first and/or second conduit an adjustable device which equalizes the pressure over the cross section of the conduit.
  • Pressure-equalizing devices can be gratings, strainers, louvered flap systems, etc. The best results for the operation of a hot blast stove have been obtained with pressure-equalizing devices in the shape of rod lattices.
  • the improved results due to the invention can be obtained when using it on hot blast stoves with interior and exterior combustion chambers.
  • FIG. 1 shows a longitudinal section of a hot blast stove with an interior combustion chamber.
  • FIG. 2 shows the burner of the hot blast stove of FIG. l on a larger scale.
  • the housing ll of a hot blast stove forms with the bottom 2 on which it stands a bricked unit.
  • the brick housing l is surrounded by a steel casing (not shown).
  • a number of pillars 3 projecting out of the bottom 2 support a lattice 4, which in its turn supports the perforated stones piled up on it (not shown) through which alternately hot combustion gas goes down and heated air is led upwards.
  • This so-called lattice work is separated by a wall 5 from the combustion chamber, which in turn is limited outside by a section of the housing l.
  • the hot blast stove is closed on the upper part by a brick cupola t5 and a steel cupola 7.
  • the gaseous fuel and air needed to preserve the hot combustion gases are supplied through a conduit and/or through a ring conduit 9 to burner 10.
  • the burner is schematically shown in FIG. ll.
  • the air to be heated is then led through an opening ill in opposite direction through the installation and can escape through opening 12.
  • FIG. 2 shows a burner and its surroundings in detail and on a larger scale.
  • the central conduit for the fuel connects with a central hole 116 in the burner 10.
  • This burner is manufactured of ceramic material, as well as the walls of the conduits d and 9 and the walls l and 5 of the combustion chamber.
  • discharge slotshaped openings 117 are in connection with conduit 9.
  • conduit 8 two rod lattices have been provided, lattice 21 in the narrowed conduit part 119, and a second lattice 22 not far from the lower end of conduit 8.
  • ring conduit 9 there is only a single ring-shaped rod lattice 23 in the narrowed conduit part 20.
  • Any suitable means for effecting adjustment of the pressureand flow-equalizing means may be utilized such as schematically depicted louvre traps 2d (FIG. 1) adjustable by any suitable control, such as handle 25.
  • a heat generator particularly a hot blast stove for blast furnaces having a vertical burner installed inside of a combustion chamber
  • improved means for providing a more even mixture and complete combustion of gaseous fuel components
  • said improved means comprising a first vertical conduit for and connectable with a supply of gaseous fuel, a second conduit coaxial with said first conduit for and connectable with a supply of combustion air, pressureand flowequalizing means in at least one of said conduits to equalize the pressure and flow more completely over the cross section of said conduit to form an even and more regular mixture of gaseous fuel
  • said first and second conduits being separately, noncommunicatively disposed with their respective outlets relatively concentrically spaced from one another so that responsive to the even and more regular flowing of the gaseous fuel components, the intermixing of the fuel components and the subsequent combustion occurs above said burner in the combustion chamber resulting in a more efficient and complete combustion.
  • a heat generator according to claim 1 wherein said pressure-equalizing means include means to enable them to be adjustable from the outside of the hot blast furnace, for instance, the inclusion of movable louvered traps.
  • duits are respectively narrowed down and a lattice is disposed in the narrowed part of each conduit.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
US867301A 1968-10-19 1969-10-17 Heat regenerator particularly hot blast stoves for a blast furnace Expired - Lifetime US3627284A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681803985 DE1803985A1 (de) 1968-10-19 1968-10-19 Waermegenerator,insbesondere Winderhitzer fuer Hochoefen

Publications (1)

Publication Number Publication Date
US3627284A true US3627284A (en) 1971-12-14

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ID=5710914

Family Applications (1)

Application Number Title Priority Date Filing Date
US867301A Expired - Lifetime US3627284A (en) 1968-10-19 1969-10-17 Heat regenerator particularly hot blast stoves for a blast furnace

Country Status (7)

Country Link
US (1) US3627284A (de)
AT (1) AT295720B (de)
BE (1) BE740317A (de)
DE (1) DE1803985A1 (de)
FR (1) FR2021087A1 (de)
GB (1) GB1282292A (de)
LU (1) LU59664A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837793A (en) * 1971-05-10 1974-09-24 Koninklijke Hoogovens En Staal Ceramic burner for use in an air-preheater or hot blast stove for a blast furnace plant
US3891384A (en) * 1973-11-05 1975-06-24 Bloom Eng Co Inc Stove burner
US4311456A (en) * 1980-07-18 1982-01-19 Bricmont & Associates, Inc. Blast furnace stove
US4582485A (en) * 1985-02-13 1986-04-15 White Jr Herbert A Blast furnace stove
US4881895A (en) * 1987-08-31 1989-11-21 Hoogovens Groep B.V. Ceramic gas burner for a combustion chamber of a hot-blast stove
US4997362A (en) * 1989-03-08 1991-03-05 Didier-Werke Ag Ceramic burner
US5052922A (en) * 1989-06-27 1991-10-01 Hoogovens Groep Bv Ceramic gas burner for a hot blast stove, and bricks therefor
CN107090530A (zh) * 2009-11-26 2017-08-25 林德股份公司 加热高炉热风炉的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113819651B (zh) * 2021-09-26 2023-05-23 芜湖新农夫机械股份有限公司 一种具有废气净化功能的智能化热风炉及其使用方法

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837793A (en) * 1971-05-10 1974-09-24 Koninklijke Hoogovens En Staal Ceramic burner for use in an air-preheater or hot blast stove for a blast furnace plant
US3891384A (en) * 1973-11-05 1975-06-24 Bloom Eng Co Inc Stove burner
US4311456A (en) * 1980-07-18 1982-01-19 Bricmont & Associates, Inc. Blast furnace stove
US4582485A (en) * 1985-02-13 1986-04-15 White Jr Herbert A Blast furnace stove
US4881895A (en) * 1987-08-31 1989-11-21 Hoogovens Groep B.V. Ceramic gas burner for a combustion chamber of a hot-blast stove
AU600385B2 (en) * 1987-08-31 1990-08-09 Hoogovens Groep Bv Ceramic gas burner for a combustion chamber of a hot-blast stove of a hot blast furnace
US4997362A (en) * 1989-03-08 1991-03-05 Didier-Werke Ag Ceramic burner
US5052922A (en) * 1989-06-27 1991-10-01 Hoogovens Groep Bv Ceramic gas burner for a hot blast stove, and bricks therefor
CN107090530A (zh) * 2009-11-26 2017-08-25 林德股份公司 加热高炉热风炉的方法

Also Published As

Publication number Publication date
BE740317A (de) 1970-03-16
GB1282292A (en) 1972-07-19
AT295720B (de) 1972-01-10
FR2021087A1 (de) 1970-07-17
LU59664A1 (de) 1970-01-12
DE1803985A1 (de) 1971-03-04

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