US1808120A - Pulverized fuel furnace - Google Patents

Pulverized fuel furnace Download PDF

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Publication number
US1808120A
US1808120A US471288A US47128830A US1808120A US 1808120 A US1808120 A US 1808120A US 471288 A US471288 A US 471288A US 47128830 A US47128830 A US 47128830A US 1808120 A US1808120 A US 1808120A
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United States
Prior art keywords
burner
plate
pulverized fuel
pipes
tube
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Expired - Lifetime
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US471288A
Inventor
Runkwitz Arthur
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Fried Krupp Germaniawerft AG
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Fried Krupp Germaniawerft AG
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Application filed by Fried Krupp Germaniawerft AG filed Critical Fried Krupp Germaniawerft AG
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Publication of US1808120A publication Critical patent/US1808120A/en
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Expired - Lifetime legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D1/00Burners for combustion of pulverulent fuel

Description

June 2, 1931. A. RUNKWITZ PULVERIZED' FUEL FURNACE Filed July 28, 1930 Patented June 2, 1931 UNITED STATES. PATIENT OFFICE ARTHUR mmxwrrz, or KIEL-ELMSCHENHAGEN, emummr, AssIenon T0 FRIED. xnurr GERMANIAWERFT AKTIENGESELLSCHAFT, or KIEL-GAARDEN, GERMANY PUIiVERIZED FUEL FURNACE Applicationflled July 28, 1980, Serial No. 471,288, and in Germany August 9, 1929.

The invention relates to a burner arrangement for pulverized fuel furnaces and has for its object to secure a particularly satisfactory intermixing of the pulverized fuel and the air of combustion; Thisobject is obtained according to the invention primarily by the fact that the main quantity of the fuel and air mixture is fed to the combustion chamber through a plurality of bent pipes arranged in a circle, each bent pipe being surounded by a wider bent pipe through which additional air is supplied.

In order that the invention can be more readily understood, a preferred embodiment of the same is illustrated by way of example in the accompanying drawings, in which Figure l is a sectional side view of the burner arrangement as applied to the flue of a cylindrical boiler,

Figure 2 shows the burner head, on enlarged scale,

Figure '3 is a front view of the burner head, seen from the right, on the scale of Figure 2, and

Figure 4 is a section along a cylindrical plane as indicated by 4.-4 of Figure 3.

The pulverized fuel burner is centrally mounted on a removable furnace front B and comprises an external tubular jacket C closed toward the fire chamber by a burner plate D. Within the jacket 0 is arranged concentrically a narrow cylindrical tube E i and a wider conical tube F. The latter is 1 closed toward the fire chamber by a front plate G through which projects tube E. The

burner plate D is connected to the front plate G by bridge pieces or the like and is urged against the front end of the tubes C and F by a cap H by means of a bayonet joint.

The inner tube E servesto supply that portion of the pulverized fuel-air mixture that feeds the ignition flame. This tube E opens toward the fire chamber into a roseshapedburner which produces only a com paratively short ignition flame, as marked in a dotted line in Figure 2. The main quantity of the pulverized fuel-air mixture is supplied through the annular space existing between thev tubes E and F. Exit of the pulverized fuel-air mixture into the fire chamber takes place through laterally bent pipes K mounted on the front plate G and surrounded by likewise bent wider air pipes L fixed to the burner plate D. The pipes L communicate with the annular space existing between the tubes C and F and serving to supply additional air of combust'i'on. The pipes K and L are arranged in a circle and their mouths, as to be seen from the drawing, have a direction such as to produce a whirl motion in the flue of the boiler.

In the described boiler the entire pulverized fuel-air mixture is decomposed into a plurality of individual jets each of whichhas allotted to it the required quantity of additional air of combustion which entirely envelops the jet of the'mixture, so that a very satisfactory intermixing of the pulverized fuel and the air of combustion is obtained. The centrally arranged ignition burner reliably secures ignition of the main flame. Furthermore, the ignition flame can serve as sole source of heat when the boiler is not in full operation. Finally, the peculiar arrangement of the burner results st1ll in-the fact that coarser particles of pulverized fuel that are cast outward by centrifugal'force, traverse through the furnace on a longer way along the circumference of the flue and have thus the opportunity to burn out completely.

Owing to the additional air being forced to pass between the front walls D and G of the tubes C and F and to escape through the bent pipes L, the entire burner head both is protected against backward heat radiation from the fire chamber and intensively cooled, and, besides, the additional air of combustion is highly preheated.

What I claim and desire-to secure by Letters Patent is 1. A pulverized fuel burner comprising a burner plate, a plurality of individual laterally bent burner pipes circularly arranged on this plate, larger pipes each surcorrespondingly, a tube adapted to supply pulverized fuel-air mixture and communicating -with all of said burner pipes, and another tube adapted to supply additional air of combustion and communicating with all of said larger pipes.

2. A pulverized fuel burner comprising a burner plate, a plurality of individual laterally bent burner pipes circularly arrangedon this plate, a tube closed on its forward end by said plate and adapted to supply pulverized fuel-air mixture, another plate arranged spacedly in front of said burner plate, pipes corresponding in number to said burner pipes and laterally bent and mounted on said other plate so as to surround said burner pipes, and, another tube closed on its forward end by said other plate and adapted to supply additional air to said surrounding pipes.

3. A pulverized fuel burner comprising a burner plate, a plurality of individual laterally bent burner pipes circularly arranged on this plate, a tube closed on its forward end by said plate and adapted to supply pulverized fuel-air mixture, another plate arranged spacedly in front of said burner plate, pipes corresponding in number to said burner pipes and laterally bent and mounted on said other plate so as to surround said burner pipes, another tube closed on its forward end by said other plate and adapted to supply additional air to said surrounding pipes, an ignition burner centrally arranged on said other plate, a third tube arranged Within said first-named tube and adapted to supply pulverizedfuel-air mixture to said ignition burner.

The foregoing specification signd at Hamburg, Germany, this 12th day of July,

ARTHUR RUNKWITZ.

US471288A 1929-08-09 1930-07-28 Pulverized fuel furnace Expired - Lifetime US1808120A (en)

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DE1808120X 1929-08-09

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US1808120A true US1808120A (en) 1931-06-02

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433618A (en) * 1943-02-25 1947-12-30 Stewart Warner Corp Fluid fuel internal-combustion air heater
US4239481A (en) * 1978-06-19 1980-12-16 Selas Corporation Of America Double orifice vortex burner for low or high Wobbe fuels
US4610625A (en) * 1985-09-23 1986-09-09 Bunn Richard L Burner
DE4319363A1 (en) * 1993-06-11 1994-12-15 Kloeckner Humboldt Deutz Ag Rotary kiln burners
US5984665A (en) * 1998-02-09 1999-11-16 Gas Research Institute Low emissions surface combustion pilot and flame holder
US5993193A (en) * 1998-02-09 1999-11-30 Gas Research, Inc. Variable heat flux low emissions burner
US6007325A (en) * 1998-02-09 1999-12-28 Gas Research Institute Ultra low emissions burner
US20060249552A1 (en) * 2005-05-09 2006-11-09 I-Concept International Limited Ergonomic golf bag handle
US20140157779A1 (en) * 2012-12-10 2014-06-12 General Electric Company SYSTEM FOR REDUCING COMBUSTION DYNAMICS AND NOx IN A COMBUSTOR
USD791930S1 (en) 2015-06-04 2017-07-11 Tropitone Furniture Co., Inc. Fire burner
US10197291B2 (en) 2015-06-04 2019-02-05 Tropitone Furniture Co., Inc. Fire burner
US10281146B1 (en) * 2013-04-18 2019-05-07 Astec, Inc. Apparatus and method for a center fuel stabilization bluff body

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433618A (en) * 1943-02-25 1947-12-30 Stewart Warner Corp Fluid fuel internal-combustion air heater
US4239481A (en) * 1978-06-19 1980-12-16 Selas Corporation Of America Double orifice vortex burner for low or high Wobbe fuels
US4610625A (en) * 1985-09-23 1986-09-09 Bunn Richard L Burner
DE4319363A1 (en) * 1993-06-11 1994-12-15 Kloeckner Humboldt Deutz Ag Rotary kiln burners
US5984665A (en) * 1998-02-09 1999-11-16 Gas Research Institute Low emissions surface combustion pilot and flame holder
US5993193A (en) * 1998-02-09 1999-11-30 Gas Research, Inc. Variable heat flux low emissions burner
US6007325A (en) * 1998-02-09 1999-12-28 Gas Research Institute Ultra low emissions burner
US20060249552A1 (en) * 2005-05-09 2006-11-09 I-Concept International Limited Ergonomic golf bag handle
US20140157779A1 (en) * 2012-12-10 2014-06-12 General Electric Company SYSTEM FOR REDUCING COMBUSTION DYNAMICS AND NOx IN A COMBUSTOR
US9353950B2 (en) * 2012-12-10 2016-05-31 General Electric Company System for reducing combustion dynamics and NOx in a combustor
US10281146B1 (en) * 2013-04-18 2019-05-07 Astec, Inc. Apparatus and method for a center fuel stabilization bluff body
USD791930S1 (en) 2015-06-04 2017-07-11 Tropitone Furniture Co., Inc. Fire burner
US10197291B2 (en) 2015-06-04 2019-02-05 Tropitone Furniture Co., Inc. Fire burner
USD842450S1 (en) 2015-06-04 2019-03-05 Tropitone Furniture Co., Inc. Fire burner

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