US3473793A - Hot blast stove - Google Patents

Hot blast stove Download PDF

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Publication number
US3473793A
US3473793A US638702A US3473793DA US3473793A US 3473793 A US3473793 A US 3473793A US 638702 A US638702 A US 638702A US 3473793D A US3473793D A US 3473793DA US 3473793 A US3473793 A US 3473793A
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US
United States
Prior art keywords
hot blast
blast stove
annular
cupola
latticework
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.)
Expired - Lifetime
Application number
US638702A
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English (en)
Inventor
Wolfgang Cronert
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.)
Martin and Pagenstecher AG
Original Assignee
Martin and Pagenstecher AG
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Filing date
Publication date
Application filed by Martin and Pagenstecher AG filed Critical Martin and Pagenstecher AG
Application granted granted Critical
Publication of US3473793A publication Critical patent/US3473793A/en
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Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B9/00—Stoves for heating the blast in blast furnaces

Definitions

  • the cupola has a generally hemispherical central member.
  • the conical member is joined at the top thereof to a cylindrical section of lesser diameter than the cupola cylindrical section.
  • the two cylindrical sections ar concentric over at least a portion of their length and have disposed therebetween an annular air channel and an annular fuel gas channel which are operatively associated with an annular mixing channel communicating with upwardly directed nozzles.
  • the invention relates to a combustion chamber-less hot blast stove having a burner disposed in the upper, lattucework-free portion of the furnace, whose exhaust gases are carried downward through the stove and flow through and heat the heat-storing latticework.
  • Burner arrangements of this kind have been disclosed, for example, in German Patents 318,068, 863,663, and 961,284, wherein combustion gas nozzles and combustion air nozzles are disposed in the cupola of the furnace.
  • German Patent 957,848 the combustion mixture is blown in through burners which discharge tangentially into a horizontal annular channel between the latticework and cupola, the said channel being open at the top
  • German Patent 483,824 separate gas and air nozzles which are directed upward are disposed between the latticework chamber and an overlapping stove cupola. In this manner, the flow of the gases is so conducted that the flames describe U-shaped paths and therefore have more time to burn themselves out; the mixing of gas and air, which in this arrangement first takes place in the latticework-free portion of the stove, is nevertheless very poor, so that complete combustion cannot be achieved.
  • one aspect of this invention resides in a combustion chamber-less hot nited States Patent Car blast stove, wherein the burner has annular channels disposed within the outer periphery of the furnace, at least one of which has at least one fuel gas inlet and at least one of which has at least one air inlet, and wherein the channels are provided with a plurality of orifices for discharging the combustion substances into the furnace.
  • the hot blast stove has a section above the latticework which tapers inwardly towards the top where it joins a cylindrical section which is overlapped by the cupola and the annular channels are disposed between the cylindrical section and the overlapping cupola.
  • This arrangement not only permits an especially simple way of connecting the channels to the fuel gas and air lines, but also keeps the cost of the burner and its weight low, sinc the burner ha a smaller diameter than the portion of the furnace that is equipped with the heat-storing latticework.
  • the channel orifices, from which the combustion substances emerge are upwardly directed and if the furnace cupola consists of a generally hemispherical upper portion surrounding a generally downwardly directed cylindrical portion. The combustion gases are reflected downward by the hemispherical top portion and are thus additionally intermixed.
  • the hot blast stove is encircled by an annular fuel gas manifold and an annular air manifold from which a plurality of pipes carry the gas and air respectively to the above-recited annular channels.
  • one pipe carrying fuel gas and one carrying air open tangentially into the annular channels.
  • a blast discharge pipe is preferably connected to the cylindrical portion of the cupola or to the cylindrical section of the furnace directly beneath the burner.
  • FIG. 1 shows a longitudinal section through the upper portion of a hot blast stove according to the invention (exemplary embodiment 1);
  • FIG. 2 shows a cross-section through the hot blast stove of FIG. 1, in which sector a corresponds to line HaIIa of FIG. 1, sector 11 to line IIb-Ilb of FIG. 1, and sector 0 to line IIc-IIc of FIG. 1, and in which the right half corresponds to line II-II of FIG. 1;
  • FIG. 3 is a longitudinal section through the upper portion of another hot blast stove according to the invention (exemplary embodiment 2).
  • FIG. 4 is a cross-sectional through the hot blast stove of FIG. 3, the left half corresponding to line IVaIVa of FIG. 3, and the right half, which is rotated within the plane of the paper, corresponding to line IVb Nb of FIG. 3.
  • FIG. 5 shows a longitudinal section through the upper portion of a further hot blast stove according to the invention (exemplary embodiment 3).
  • a hot blast stove is depicted as containing a heat-storing latticework 2, joined by an inwardly directed upwardly tapering intermediate section 3 to a cylindrical section 4, which cylindrical section is overlapped by a cupola 6.
  • a burner 5 having two annular channels 7 and 8 is disposed between the cylindrical section 4 and the overlapping cupola 6.
  • Annular channel 7 is equipped with fuel gas feed pipes 9 (only one in embodiment 2 of FIG. 3),
  • annular channel 8 is equipped with combustion air feed pipes 10 (only one in embodiment 2).
  • the annular channel 7 has upwardly directed orifices 11, and annular channel 8 likewise has upwardly directed orifices 12.
  • the brickwork consists of the refractory materials customarily used.
  • the hot blast stove is encircled at the level of the annular channels 7 and 8 by an annular fuel gas manifold 17 and an annular air manifold 18 respectively, from which fuel gas pipes 9 and air pipes 10 lead to the annular channels 7 and 8.
  • Each feed pipe 9 and 10 has a throttle valve and a slide valve by means of which gas and air can be uniformly distributed over the annular cross-section of the burner 5.
  • the cupola 6 consists of a hemispherical upper portion surmounting a cylindrical portion to which a blast dis charge pipe 16 is connected.
  • a fuel gas feed pipe 9 and an air feed pipe 10 lead tangentially into the annular chanels 7 and 8, respectively.
  • the cupola 6 has a hemispherical upper portion surmounting a cylindrical portion; the latter, however, is very short.
  • the cylindrical section 4 between the upwardly tapering portion 3 and the cupola 6 is longer than in embodiment 1, and the hot blast discharge pipe 16 is connected to it.
  • the mixture emerges from annular chamber 13 through the slits 15 in diffuser 14 and burns.
  • Dividing the gas and air flow into many small individual currents makes possible an especially good intermixture of the two.
  • the gases are deflected downward by the spherical shape of the cupola 6. On their further course through the cylindrical section 4 and the tapering portion 3, they have sufiicient time to burn out completely before they enter into the latticework.
  • the hot exhaust gases then flow through the heat storing latticework, yield most of their caloric content to the latter, and emerge from the stove at the bottom end thereof.
  • An especially uniform distribution of the hot exhaust gases through the latticework is achieved by this arrangement according to the invention.
  • cold air is blown in at the bottom end of the hot blast stove, is heated by the heat-storing latticework, and emerges from the stove 1 through the hot blast discharge pipe 16.
  • the upwardly and inwardly tapering intermediate portion 3 is mounted on the portion of the furnace 1 that contains the latticework z, and burner 5 is mounted on the cylindrical section 4, in such a manner that the walls of the adjoining parts of the stove can shift in relation to one another when they expand by different amounts due to heat.
  • a hot blast stove containing a heat-retaining latticework section in the under portion thereof and a cupola as the top member thereof; the improvement which comprisesproviding a burner between said cupola and said latticework section wherein said burner comprises two annular channels adapted respectively for the receipt therein of fuel gas and air, an annular mixing chamber adapted to receive the efi lux from said annular channels and a multiplicity of orifices communicating between said channels and a combustion area.
  • An improved hot blast stove as claimedin claim 11 wherein an upwardly and inwardly tapering generally truncated conical member atop said latticework section is provided, wherein said cupola has a generally hemi spherical central portion attached to a generally cylindrical portion, wherein said conical portion has a cylindrical member of lesser diameter than said cupola cylinder atop thereof, and wherein said burner is disposed between said cylinders.
  • An improved hot blast stove as claimed in claim 1 wherein said channels are operatively associated with a multiplicity of feed pipes thereinto, and with an annular chamber adapted to receive the efilux of said channels, and wherein said chamber has a diffuser operatively associated with the exit end thereof.
  • An improved blast stove as claimed in claim I wherein one feed pipe leads tangentially into one of said channels, and one feed pipe leads tangentially into the other of said channels.
  • An improved blast furnace as claimed in claim 1 having a hot blast discharge duct in operative association with said cupola.
  • An improved hot blast stove as claimed in claim 5 having a hot blast discharge duct in operative association with said cylindrical member atop of said conical portion.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Gas Burners (AREA)
US638702A 1966-05-13 1967-05-10 Hot blast stove Expired - Lifetime US3473793A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0103773 1966-05-13

Publications (1)

Publication Number Publication Date
US3473793A true US3473793A (en) 1969-10-21

Family

ID=7525421

Family Applications (1)

Application Number Title Priority Date Filing Date
US638702A Expired - Lifetime US3473793A (en) 1966-05-13 1967-05-10 Hot blast stove

Country Status (6)

Country Link
US (1) US3473793A (de)
AT (1) AT274196B (de)
BE (1) BE698320A (de)
DE (1) DE1526029B1 (de)
LU (1) LU53661A1 (de)
NL (1) NL6706517A (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054409A (en) * 1975-05-15 1977-10-18 Nippon Kokan Kabushiki Kaisha Swirling burners for use in hot blast stoves
US4614496A (en) * 1983-10-05 1986-09-30 Chen Binglin Cowper having no combustion shaft
RU2145637C1 (ru) * 1999-03-29 2000-02-20 Калугин Яков Прокопьевич Воздухонагреватель
RU2215792C1 (ru) * 2002-02-18 2003-11-10 Калугин Яков Прокопьевич Воздухонагреватель
RU2316600C2 (ru) * 2006-03-01 2008-02-10 Яков Прокопьевич Калугин Воздухонагреватель
WO2009008758A1 (en) * 2007-07-09 2009-01-15 Yakov Prokopievich Kalugin Air heater
RU2458149C2 (ru) * 2008-05-12 2012-08-10 Государственное предприятие "Украинский институт по проектированию металлургических заводов" (ГП "Укргипромез") Воздухонагреватель доменной печи
WO2015094011A1 (ru) * 2013-12-18 2015-06-25 Закрытое Акционерное Общество "Калугин" Бесшахтный воздухонагреватель
RU2709569C1 (ru) * 2019-03-11 2019-12-18 Публичное Акционерное Общество "Новолипецкий металлургический комбинат" Способ ремонта тракта горячего дутья доменной печи
RU2736818C1 (ru) * 2020-05-01 2020-11-20 Открытое акционерное общество "Научно-исследовательский институт металлургической теплотехники" (ОАО "ВНИИМТ") Бесшахтный воздухонагреватель
RU2753208C1 (ru) * 2020-06-16 2021-08-12 Акционерное общество "КАЛУГИН" Бесшахтный воздухонагреватель
USD973854S1 (en) * 2016-02-12 2022-12-27 Zakrytoye Akcionernoye Obschestvo “Kalugin” Hot stove for blast furnace

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US409541A (en) * 1889-08-20 Smelting-furnace
DE438824C (de) * 1926-12-27 Karl Lampmann Gemisch- und Absaugeregler
FR1087076A (fr) * 1952-12-27 1955-02-18 Brohltal A G Fu R Stein Und To Réchauffeur d'air, sans cuve, à plusieurs zones, plus particulièrement pour hautsfourneaux

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE398207C (de) * 1924-07-11 Razen Schaefer & Co G M B H Winderhitzer mit mittlerem Brennschacht und Verbrennungskammer
DE957848C (de) * 1957-01-17 "Brohltal" A G fur Stein- und Tonindustrie, Burgbrohl (Bez Koblenz) Brennschachtloser stehender Mehrzonenwmderhitzer insbesondere fur Hochofen
DE318068C (de) * 1918-07-23 1920-01-10 Halbergerhütte Gmbh Von oben beheizter winderhitzer ohne brennschacht
DE483824C (de) * 1928-03-31 1929-10-05 Ver Stahlwerke Akt Ges Verfahren zur Beheizung von Winderhitzern ohne Brennschacht
DE961284C (de) * 1940-11-13 1957-04-04 Koppers Gmbh Heinrich Gaserhitzer (Cowper) ohne Brennschacht
DE1181251B (de) * 1962-07-12 1964-11-12 Silika & Schamotte Fabriken Ma Winderhitzer mit nebenstehendem Brennschacht
DE1451460B2 (de) * 1963-08-27 1971-01-21 Heinrich Koppers Gmbh, 4300 Essen Im Boden des Brennschachtes eines einraumigen turmartigen Gas oder Wind erhitzers angeordnete Verbrennungseinnch tung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US409541A (en) * 1889-08-20 Smelting-furnace
DE438824C (de) * 1926-12-27 Karl Lampmann Gemisch- und Absaugeregler
FR1087076A (fr) * 1952-12-27 1955-02-18 Brohltal A G Fu R Stein Und To Réchauffeur d'air, sans cuve, à plusieurs zones, plus particulièrement pour hautsfourneaux

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054409A (en) * 1975-05-15 1977-10-18 Nippon Kokan Kabushiki Kaisha Swirling burners for use in hot blast stoves
US4614496A (en) * 1983-10-05 1986-09-30 Chen Binglin Cowper having no combustion shaft
RU2145637C1 (ru) * 1999-03-29 2000-02-20 Калугин Яков Прокопьевич Воздухонагреватель
RU2215792C1 (ru) * 2002-02-18 2003-11-10 Калугин Яков Прокопьевич Воздухонагреватель
RU2316600C2 (ru) * 2006-03-01 2008-02-10 Яков Прокопьевич Калугин Воздухонагреватель
CN101707893B (zh) * 2007-07-09 2012-04-18 雅科夫·普罗科皮耶维奇·卡卢金 热风炉
US20100323314A1 (en) * 2007-07-09 2010-12-23 Yakov Kalugin Hot Air Stove
EA015316B1 (ru) * 2007-07-09 2011-06-30 Яков Прокопьевич КАЛУГИН Воздухонагреватель
WO2009008758A1 (en) * 2007-07-09 2009-01-15 Yakov Prokopievich Kalugin Air heater
US8419423B2 (en) 2007-07-09 2013-04-16 Yakov Kalugin Hot air stove
RU2458149C2 (ru) * 2008-05-12 2012-08-10 Государственное предприятие "Украинский институт по проектированию металлургических заводов" (ГП "Укргипромез") Воздухонагреватель доменной печи
RU2554239C1 (ru) * 2013-12-18 2015-06-27 Закрытое Акционерное Общество "Калугин" Бесшахтный воздухонагреватель
WO2015094011A1 (ru) * 2013-12-18 2015-06-25 Закрытое Акционерное Общество "Калугин" Бесшахтный воздухонагреватель
USD973854S1 (en) * 2016-02-12 2022-12-27 Zakrytoye Akcionernoye Obschestvo “Kalugin” Hot stove for blast furnace
RU2709569C1 (ru) * 2019-03-11 2019-12-18 Публичное Акционерное Общество "Новолипецкий металлургический комбинат" Способ ремонта тракта горячего дутья доменной печи
RU2736818C1 (ru) * 2020-05-01 2020-11-20 Открытое акционерное общество "Научно-исследовательский институт металлургической теплотехники" (ОАО "ВНИИМТ") Бесшахтный воздухонагреватель
WO2021221536A1 (ru) * 2020-05-01 2021-11-04 Открытое акционерное общество "Научно-исследовательский институт металлургической теплотехники" (ОАО "ВНИИМТ") Бесшахтный воздухонагреватель
RU2753208C1 (ru) * 2020-06-16 2021-08-12 Акционерное общество "КАЛУГИН" Бесшахтный воздухонагреватель
WO2021256966A1 (ru) * 2020-06-16 2021-12-23 Акционерное общество "КАЛУГИН" Бесшахтный воздухонагреватель

Also Published As

Publication number Publication date
AT274196B (de) 1969-09-10
BE698320A (de) 1967-10-16
NL6706517A (de) 1967-11-14
LU53661A1 (de) 1967-07-12
DE1526029B1 (de) 1971-04-22

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