US3209808A - Soaking pit burner or the like - Google Patents

Soaking pit burner or the like Download PDF

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Publication number
US3209808A
US3209808A US187748A US18774862A US3209808A US 3209808 A US3209808 A US 3209808A US 187748 A US187748 A US 187748A US 18774862 A US18774862 A US 18774862A US 3209808 A US3209808 A US 3209808A
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United States
Prior art keywords
burner
combustion air
fuel
baffle
body portion
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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
US187748A
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English (en)
Inventor
Leon F Conway
Walter Rudin
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.)
Bloom Engineering Co Inc
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Bloom Engineering Co Inc
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Publication date
Application filed by Bloom Engineering Co Inc filed Critical Bloom Engineering Co Inc
Priority to US187748A priority Critical patent/US3209808A/en
Priority to DE1401853A priority patent/DE1401853C3/de
Priority to GB34151/62A priority patent/GB978117A/en
Application granted granted Critical
Publication of US3209808A publication Critical patent/US3209808A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/70—Furnaces for ingots, i.e. soaking pits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel

Definitions

  • This invention relates to a burner capable of bettering performance in a soaking pit or other furnace, using combustion air, preferably preheated, and gaseous fuel in the form of fuel gas or atomized fuel oil, for combustion; energy of the combustion air being employed for relatively rapid mixing and for widespread dispersion of hot gases to obtain relatively rapid and uniform heating in all parts of the soaking pit or other furnace. More particularly, this invention pertains to such a burner for top-fired rectangular soaking pits or the like, usually with one-way firing using one or two relatively large burners.
  • a one-way top fired soaking pit for example, is relatively economical of plant area particularly when utilizing a recuperator for the preheating of combustion air.
  • a practice of this invention in such a soaking pit indicates that ingots can be heated to finish temperature and soaked uniformly much faster than heretofore has been thought possible, by use of a burner device disclosed herein. Thereby, there is a greatly increased tonnage per turn of uniformly hot, soaked ingots without an increase in the speed of gas circulation in the furnace.
  • the soaking time from the moment that the steel control temperature is reached in the soaking pit is exceptionally short and there is uniformity of temperature from top to bottom of a respective ingot and among ingots in a particular pit.
  • FIGURE 1 is a sectional view in elevation of a rectangular one-way top-fired soaking pit taken along line line 1-1 of FIGURE 2, utilizing a single burner embodiment of this invention;
  • FIGURE 2 is a sectional view in elevation taken along line IIII of FIGURE 1;
  • FIGURE 3 is a sectional view in elevation of the burner 3,2695% Patented Get. 5, 1965 used in the soaking pit of FIGURES 1 and 2 taken through the axis thereof on line IlIlII of FIGURE 2;
  • FIGURE 4 is a partial view in elevation looking at the inner end of the burner shown in FIGURE 3 generally along line IV-IV of FIGURE 3;
  • FIGURE 5 is a sectional view of the refractory bafile of the burner shown in the preceding figures taken along line VV of FIGURE 4;
  • FIGURE 6 is a sectional view, similar to that shown in FIGURE 3, of a further burner embodiment of this invention.
  • FIGURE 7 is a view in elevation looking at the inner end of the burner shown in FIGURE 6 generally along line VIIVII of FIGURE 6.
  • FIGURES 1 to 5, inclusive, of the drawings there is shown therein a rectangular one-way topfired soaking pit 10 having a single burner 11 of this invention mounted in the upper part of the firing end of furnace 10.
  • Furnace 10 comprises front and back refractory lined walls 12 and 13, respectively, refractory lined side walls 14, a refractory hearth 15 adapted to receive a plurality of ingots 16 to be heated and soaked, and a removable refractory lined cover 17 which is opened at least whenever ingots are to be charged into the furnace, or discharged therefrom.
  • the lower part of the front firing wall 12 is provided with a flue opening 18 leading to a flue 19 through which effluent gases from the interior of the soaking pit 11 are exhausted.
  • Structural steel framing 24 is used to bind the furnace structure in the usual way.
  • Front wall 12 may be provided with a pair of thermocouple well positions 20 for thermocouples 21 to indicate the temperature of steel at that end of the pit. Additionally, thermocouple positions 22 may be provided in suitable refractory wells at the opposite end of the pit for thermocouples 23 to indicate steel temperature in that general location. It is common to provide such thermocouple control positions 20 and 22 adjacent the level of ingot tops in such a soaking pit and to intercom nect the thermocouples by a selector switch so that a temperature indication from any one, or from more than one, may be obtained in conventional furnaces to locate the hottest thermocouple location which then can be used as the control station to prevent overheating of the furnace and the work therein in the form of ingots, or other shapes.
  • thermocouple locations may often be found in such pits.
  • heating is so relatively uniform and rapid that need for several thermocouple positions is avoided and location of a thermocouple used for control may be almost anywhere in the pit up to the ingot top level.
  • Burner 11 comprises, in the illustrated embodiment being described, a burner body having a metal shell 25 and a refractory lining 26.
  • the burner is adapted to be fastened by a perimetral flange 27 to the metal shell of furnace 1i
  • Burner 11 has an air body portion 28 and a combustion air inlet 29 at right angles thereto for connection to a combustion air conduit 31 by means of the respective flanges 31, such combustion air being the bulk combustion air at the desired air fuel ratio for the operation of burner 11 and any furnace, such as soaking pit 10, to which the burner is attached.
  • the axis 32 of air body portion 28, which is cylindrical in cross section, is in axial registry with a port 33 in a conventional forward-firing refractory port block 34 set in the firing wall12 of pit 1 13.
  • the back end of burner 11 is provided with an axial opening 35 removably closed by a mounting plate 36 lined with refractory 37 and having a smaller axial opening 38 for a fuel tube 39 coaxial with axis 32.
  • Fuel tube 39 as shown is adapted to supply a fuel ga including, without limitation, natural gas, coke oven gas, hydrocarbon gas and low calorie gas at suitable, including relatively low, velocity and pressure.
  • the outer end of fuel tube 3? is fixed as by welding in an annular mounting plate 49 held in registry with an inlet fitting 41 to which fuel gas is supplied through a conduit 42, the outer end of fitting 41 being blanked off by a plate 43.
  • fuel gas upon admission of fuel gas through conduit 42 when the requisite valve or valves are open to the desired extent, such fuel gas will pass through the interior of fuel tube 39, which acts as a nozzle, and is radially spaced from the inside of air body portion 28.
  • fuel gas is admitted squarely into fitting 41 at right angles thereto; however, the fuel gas may be whirled in fitting ill and tube 39, preferably in the same direction the combustion air is whirled when discharged, by offsetting conduit 42 to introduce the fuel gas tangentially into fitting 41 to one side of axis 32.
  • the combustion air enters inlet 29 and passes axially along the outside of fuel tube 39 generally in the direction of arrows 44- through the annular passageway inside air body portion 28 and around tube 39 to ward a refractory baffle 45.
  • Refractory baffle 4-5 is an axially thick preferably circular disc extending across the front or inner end of burner 11 and sealed in place by an annular layer of refractory cement 46.
  • Baflie 45 has a planar back face 47 normal to axis 32 and an axially straight central opening 48 extending therethrough for fluid fuel discharged by fuel tube 39, the inner end of which, if desired, may rest in the outer end of cylindrical opening 48 or extend to a position adjacent the front face of baffle 45.
  • such front face of baflie 45 comprises a planar rim portion 49 having flat surface and a central portion 50 having a frusto-conical surface relatively widely flaring in the direction of port 33, opening 48 intersecting and defining the smaller rear edge of surface 59.
  • each such combustion air opening 51 preferably has a straight axis 52 and a rounded entry edge 53 to minimize turbulence.
  • the length of each opening 51 relative to its cross sectional area and the quantity of air passing therethrough is sumcient to jet combustion air passing through each such opening 51 in the direction of its respective axis 52 upon leaving exit edge 54.
  • the jetted combustion air is whirled, in a counterclockwise direction in the embodiment shown in FIGURE 4 indicated by arrows 55, because such straight axes 52 are generally tangentially positioned relative to an imaginary generally cylindrical shape coaxial with and surrounding opening 43 and fuel tube 39.
  • the inner ends of axes 52 intersect an imaginary circle comprising the edge between portions 49 and 50 of the front face of baffle 45, and the rear ends of axes 52 intersect at slightly smaller imaginary coaxial back circle on the back face of baffie 45.
  • openings 51 not only produce a combined whirl of directed jets in the same direction of rotation which also has some flaring tendency as the jetted air leaves the exits 54.
  • a conventional air gas ratio controller is usually employed with conventional instrumentation one or more including temperature sensing indicators, such as thermocouples 21 and 23, to show when steel ingots in pit it have reached finish temperature above which the steel would tend to become overheated and possibly damaged.
  • Ingots charged to soaking pit 10 may be at any level of temperature depending upon the length of elapsed track time between casting of the ingots and charging them into the pit.
  • the burner 11 With a fresh charge in the pit, the burner 11 would be turned up, in a normal operation, to maximum fuel firing rate to heat the freshly charged ingots to finish temperature as rapidly as possible and then turn down the burner during soaking to minimum fuel rate (minimum fire) as rapidly as possible, provided, that the finish temperature at the end of the soaking turndown period in each ingot is relatively uniform from the outside to the inside thereof, from the top to bottom thereof, and, from ingot to ingot in the same soaking pit.
  • any of the thermocouples shown may be selected for control because, without intending to be limited to such explanation, it appears that flame and combustion gases from burner 11 are thrown in all directions and penetrate into all corners.
  • the axial furnace temperature gradient from one end of furnace it) to the other appears to reach a maximum mid-way between those ends and when the selected heating control temperature is reached and fuel and combustion air are turned down, a much greater turndown rate may be used and still achieve finish temperature throughout uniformly soaked steel ingots in the pit 10.
  • the uniformity of heating produces concurrency and uniformity of soaking, in respect of each ingot and in respect of respective ingots in soaking pit 10 in a particular charge, to greatly foreshorten (halving it in some cases) what heretofore had been acknowledged to be a representative length of soaking time required between the time when the fuel began to be cut back and the achievement of the minimum fuel rate used to indicate the ingots were ready for removal from the pit.
  • a burner device of the instant invention enables each ingot and the collective ingots to be heated so uniformly that there no longer is a fully or dangerously hot ingot part or ingot relative to other parts or ingots in the soaking pit to require further heating time for such other parts or ingots to take place during soaking of the first-mentioned ingot part or ingot.
  • Such irregularity was so common in prior practices that regular schedules for the introduction and removal of ingots in a pit charge were arranged.
  • the temperature control responds in a practice of the instant invention, indicating selected furnace temperature has been reached due to a drop off in the absorption rate of thermal units by the steel, the zone in pit It) adjacent flue opening 18 and near the bottom of the ingots nearest that flue opening, appears to be just about as hot as any other and about the same as the temperature of the zone near the hearth :at the far end of the furnace adjacent to end wall 13.
  • FIGURES 6 and 7 illustrates a combination fuel burner of this invention utilizing atomized fuel oil, or fuel gas, or both, as the relatively gaseous fuel and, if selected, a modified form of refractory baffle, parts in the embodiment of FIGURES 6 and 7 corresponding in construction and function to parts in the earlier described embodiment being provided With the same reference numerals with the addition of a prime accent thereto, respectively.
  • burner 11' is provided with an annular back plate 43 which has a central opening drilled therein and tapped for a conventional emulsion type mixing and atomizing nozzle 60 which receives fuel oil through a pipe 61 and an atomizing fuel such as steam or compressed air through a pipe 62, the emulsion type mixture passing through an emulsion tube 63 and heat-resistant tip 64 for atomized discharge through a central axial orifice 64a in its inner end.
  • atomized fuel is discharged uniformly around the axis of the burner and is drawn laterally across front face portion 50 of refractory baffle 45' by the force of the jetting air streams issuing from the tangential combustion air openings 51'.
  • Emulsion tube 63 and tip 64 may be mounted in cantilever position by virtue of the rigid mounting of the rear end of tube 63 in member 60.
  • Burner 11' is also provided with a fuel gas connection comprising conduit 42' and fitting 41' and surrounding emulsion tube 63 within fitting 41' and fuel tube 39', for use when fuel oil may not be available as a matter of economics or supply; or, fuel gas may be burned along with atomized fuel oil in an operation of burner 11'.
  • burner 11' is operated on fuel gas alone as the fuel, the emulsion tube 63 and tip 64 would be withdrawn by disconnection of atomizer 60 from plate 43 and a pipe plug inserted in the drilled and tapped opening in plate 43' to close that opening.
  • the action of burner 11' is virtually the same whether firing on fuel gas cycle, or fuel oil cycle, or a combined gas-andoil cycle, the dished surface portion 50 tending to even out differences between the respective fuels used and obtain the immediate precipitation of flame and combustion gases into the whole of the soaking pit including the bottom portion of the furnace.
  • Burner 11 may also be fitted up as and operated as such a combination oil-and-gas burner.
  • Burner 11 and burner 11 are primarily designed to use a relatively high calorie gas when operating on fuel gas such, for example, at natural gas, or coke oven gas, at relatively low pressure and velocity; the combustion air, on the other hand, being jetted through the combustion air openings in the baffle for discharge in a tangential and directional manner at relatively high velocity.
  • fuel gas such as, for example, at natural gas, or coke oven gas
  • Such combustion air for such a relatively high B.t.u. value gas may be hot or cold combustion air, that is, it may or may not be preheated before it is supplied to the interior of the burner around the fuel tube.
  • a burner mechanism for a soaking pit furnace or the like comprising, in combination, a forward-firing port block having a port extending into said furnace, a burner having a body having a horizontal cylindrical air body portion, a thick circular refractory bafile to fit within and extend across the inner end of said air body portion at right angles and in sealed relation thereto, said baffle having a planar back face and a front face comprising an inwardly widely flaring surface central portion and an annular planar surface rim portion, a central fuel tube extending along the axis of said air body portion to said baffle and radially spaced from the inside of said air body portion, said baffle having a central axial fuel opening therethrough in registry with said fuel tube leading to the center of said central portion and a plurality of tangential combustion air openings having straight axes the inner ends of which substantially intersect an imaginary circle at the junction of said central and rim portions and the surface of said port and the outer ends of which substantially intersect a slightly smaller coaxial imaginary circle on said back face,
  • a burner mechanism for a soaking pit furnace or the like comprising, in combination, a forward-firing port block having a port extending into said furnace, a burner having a body with a cylindrical air body portion, a thick refractory baffle to fit transversely within and extend across the inner end of said air body portion at right angles and in sealed relation thereto, said.
  • baffle having a planar back face and a front face having at least a planar portion, a central fuel tube for fluid fuel extending along the axis of said air body portion to said baffle and radially spaced from the inside of said air body portion, said baffle having a central axial fuel opening therethrough coincident with said fuel tube which extends at least up to said central axial fuel opening, said baffle further having a plurality of tangential combustion air openings having straight axes the inner ends of which substantially intersect the surface of said port in an imaginary circle positioned concentrically around and radially spaced from said central axial fuel opening, said combustion air openings having their outer ends substantially intersecting an imaginary circle on said back face concentrically around and radially spaced from said fuel tube, the length to diameter ratio of said combustion air openings being sufiicient to form jets of combustion air issuing from the inner ends of said combustion air openings in the direction of the respective axes thereof, said combustion air openings extending in the same direction of rotation.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Furnace Details (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
US187748A 1962-04-16 1962-04-16 Soaking pit burner or the like Expired - Lifetime US3209808A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US187748A US3209808A (en) 1962-04-16 1962-04-16 Soaking pit burner or the like
DE1401853A DE1401853C3 (de) 1962-04-16 1962-08-31 Gasbrenner für Tieföfen
GB34151/62A GB978117A (en) 1962-04-16 1962-09-06 Soaking pit burner or the like

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GB (1) GB978117A (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4378205A (en) * 1980-04-10 1983-03-29 Union Carbide Corporation Oxygen aspirator burner and process for firing a furnace
US4411617A (en) * 1977-11-10 1983-10-25 Maksim Jr John Burners for soaking pit furnaces
CN102141247A (zh) * 2011-04-13 2011-08-03 中冶京诚工程技术有限公司 均热炉调焰燃烧器
CN102980395A (zh) * 2012-08-08 2013-03-20 梁燕龙 手推式窑炉可伸缩燃烧装置及其燃烧方法
CN102980394A (zh) * 2012-08-08 2013-03-20 梁燕龙 可伸缩隧道窑燃烧器及其方法
CN102980396A (zh) * 2012-08-08 2013-03-20 梁燕龙 手推式隧道窑燃烧装置及其方法
CN102997655A (zh) * 2012-08-08 2013-03-27 梁燕龙 可伸缩窑炉燃烧器及其燃烧方法
CN102997656A (zh) * 2012-08-14 2013-03-27 梁燕龙 自动可移动隧道窑燃烧装置及其方法
CN103047856A (zh) * 2012-08-08 2013-04-17 梁燕龙 多功能可伸缩窑炉燃烧器及其方法
CN103063023A (zh) * 2012-08-14 2013-04-24 梁燕龙 隧道窑自动燃烧器及其方法
CN103063022A (zh) * 2012-08-14 2013-04-24 梁燕龙 窑炉自动伸缩燃烧装置及其方法
CN103063021A (zh) * 2012-08-14 2013-04-24 梁燕龙 隧道窑自动伸缩窑炉燃烧装置及其方法
CN103575100A (zh) * 2012-08-05 2014-02-12 梁燕龙 手调节窑炉燃烧装置
CN103591796A (zh) * 2012-08-14 2014-02-19 梁燕龙 隧道窑旋转燃烧装置
CN103591797A (zh) * 2012-08-14 2014-02-19 梁燕龙 隧道窑机械旋转燃烧装置
CN103697691A (zh) * 2012-09-27 2014-04-02 梁燕龙 窑炉可调节的燃烧装置及其方法
CN103697692A (zh) * 2012-09-27 2014-04-02 梁燕龙 窑炉机械调节的燃烧装置及其方法
CN103994435A (zh) * 2013-02-17 2014-08-20 梁燕龙 机械调节预混式二次燃气烧嘴及方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4475885A (en) * 1983-07-28 1984-10-09 Bloom Engineering Company, Inc. Adjustable flame burner
GB9709205D0 (en) * 1997-05-07 1997-06-25 Boc Group Plc Oxy/oil swirl burner
DE102005009274B3 (de) * 2005-02-25 2006-07-27 Stamm, Dan, Dipl.-Ing. Reinigungsverfahren für einen Verbrennungsraum und Vorrichtung zur Durchführung des Verfahrens
CN107869738B (zh) * 2017-12-08 2023-12-26 广州市东霸节能科技有限公司 一种炉头

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US1086715A (en) * 1911-07-03 1914-02-10 Babcock & Wilcox Co Apparatus for burning finely-divided fuel.
GB310899A (en) * 1927-11-26 1929-04-26 Robert Shaw Caldwell Improvements in apparatus for burning liquid fuel
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US2518800A (en) * 1948-07-14 1950-08-15 Sr George T Lester Furnace for burning comminuted fuel, including tangential air feed
DE918699C (de) * 1943-03-02 1954-10-04 Rheinische Roehrenwerke Ag Tauchbrenner
GB752333A (en) * 1952-11-13 1956-07-11 Shell Refining & Marketing Co Apparatus for mixing a liquid and a gas
US2781756A (en) * 1952-04-26 1957-02-19 Kenneth A Kobe Apparatus for submerged combustion of liquid fuels
GB819977A (en) * 1952-08-11 1959-09-09 David Etchells & Son Ltd Improvements in oil-burning furnaces

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US820235A (en) * 1905-07-12 1906-05-08 Aman Moore Apparatus for the combustion of pulverulent fuel.
US1086715A (en) * 1911-07-03 1914-02-10 Babcock & Wilcox Co Apparatus for burning finely-divided fuel.
US1910735A (en) * 1927-02-14 1933-05-23 Buttnerwerke A G Burner for coal dust firing
GB310899A (en) * 1927-11-26 1929-04-26 Robert Shaw Caldwell Improvements in apparatus for burning liquid fuel
US1841023A (en) * 1928-03-08 1932-01-12 Jr Frederick W Finke Nonexplosive burner assembly for oil burners
US1789772A (en) * 1929-05-18 1931-01-20 Elbert B Knowles Flame shield
US2375625A (en) * 1940-12-27 1945-05-08 Frederick S Bloom Combustion apparatus
US2333531A (en) * 1941-12-30 1943-11-02 Nat Airoil Burner Company Inc Furnace
DE918699C (de) * 1943-03-02 1954-10-04 Rheinische Roehrenwerke Ag Tauchbrenner
US2518800A (en) * 1948-07-14 1950-08-15 Sr George T Lester Furnace for burning comminuted fuel, including tangential air feed
US2781756A (en) * 1952-04-26 1957-02-19 Kenneth A Kobe Apparatus for submerged combustion of liquid fuels
GB819977A (en) * 1952-08-11 1959-09-09 David Etchells & Son Ltd Improvements in oil-burning furnaces
GB752333A (en) * 1952-11-13 1956-07-11 Shell Refining & Marketing Co Apparatus for mixing a liquid and a gas

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411617A (en) * 1977-11-10 1983-10-25 Maksim Jr John Burners for soaking pit furnaces
US4378205A (en) * 1980-04-10 1983-03-29 Union Carbide Corporation Oxygen aspirator burner and process for firing a furnace
CN102141247A (zh) * 2011-04-13 2011-08-03 中冶京诚工程技术有限公司 均热炉调焰燃烧器
CN103575100A (zh) * 2012-08-05 2014-02-12 梁燕龙 手调节窑炉燃烧装置
CN102980394A (zh) * 2012-08-08 2013-03-20 梁燕龙 可伸缩隧道窑燃烧器及其方法
CN102980396A (zh) * 2012-08-08 2013-03-20 梁燕龙 手推式隧道窑燃烧装置及其方法
CN102997655A (zh) * 2012-08-08 2013-03-27 梁燕龙 可伸缩窑炉燃烧器及其燃烧方法
CN102980395A (zh) * 2012-08-08 2013-03-20 梁燕龙 手推式窑炉可伸缩燃烧装置及其燃烧方法
CN103047856A (zh) * 2012-08-08 2013-04-17 梁燕龙 多功能可伸缩窑炉燃烧器及其方法
CN103063021A (zh) * 2012-08-14 2013-04-24 梁燕龙 隧道窑自动伸缩窑炉燃烧装置及其方法
CN103063022A (zh) * 2012-08-14 2013-04-24 梁燕龙 窑炉自动伸缩燃烧装置及其方法
CN103063023A (zh) * 2012-08-14 2013-04-24 梁燕龙 隧道窑自动燃烧器及其方法
CN102997656A (zh) * 2012-08-14 2013-03-27 梁燕龙 自动可移动隧道窑燃烧装置及其方法
CN103591796A (zh) * 2012-08-14 2014-02-19 梁燕龙 隧道窑旋转燃烧装置
CN103591797A (zh) * 2012-08-14 2014-02-19 梁燕龙 隧道窑机械旋转燃烧装置
CN103697691A (zh) * 2012-09-27 2014-04-02 梁燕龙 窑炉可调节的燃烧装置及其方法
CN103697692A (zh) * 2012-09-27 2014-04-02 梁燕龙 窑炉机械调节的燃烧装置及其方法
CN103994435A (zh) * 2013-02-17 2014-08-20 梁燕龙 机械调节预混式二次燃气烧嘴及方法
CN103994435B (zh) * 2013-02-17 2017-09-29 海门华夏时丽网络科技服务有限公司 机械调节预混式二次燃气烧嘴及方法

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GB978117A (en) 1964-12-16
DE1401853C3 (de) 1975-08-14
DE1401853A1 (de) 1968-10-24
DE1401853B2 (de) 1975-01-02

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