US3207493A - Regenerative furnaces - Google Patents
Regenerative furnaces Download PDFInfo
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- US3207493A US3207493A US302337A US30233763A US3207493A US 3207493 A US3207493 A US 3207493A US 302337 A US302337 A US 302337A US 30233763 A US30233763 A US 30233763A US 3207493 A US3207493 A US 3207493A
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- United States
- Prior art keywords
- regenerator
- cold
- oxydant
- inlets
- regenerators
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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.)
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Classifications
-
- 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
- F23L15/02—Arrangements of regenerators
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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
- C21B9/10—Other details, e.g. blast mains
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/32—Technologies related to metal processing using renewable energy sources
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/5544—Reversing valves - regenerative furnace type
Definitions
- This invention relates to regenerative furnaces, in which the combustion air (or oxygen or oxygen-enriched air), hereinafter referred to for brevity as air, is preheated by paired regenerators which alternately receive heat from the combustion products and reject heat to the combustion air.
- the combustion air or oxygen or oxygen-enriched air
- paired regenerators which alternately receive heat from the combustion products and reject heat to the combustion air.
- such furnaces have had two sets of burners, usually disposed on opposite sides of the working chamber of the furnace, to which sets of burners the preheated air and fuel for combustion are alternately fed, the combustion products being taken off alternately from one and the other of two outlets, which, in practice are usually the same as the preheated air inlets containing the burners.
- Such an arrangement entails cyclical reversal of the flow of combustion products from one side of the furnace to the other and consequent uneven heating of the charge in the furnace chamber. Moreover, since in each half cycle one set of burners is inactive, each set of burners (and the ducting leading thereto), must be capable of handling twice as much air and fuel as they would have to if all the burners were operative continuously.
- the principal aim of the invention is to provide means enabling all the burners (on both sides of the furnace chamber) to operate continuously and to eliminate cyclical reversal of flow of combustion products within the furnace chamber.
- An object of this invention is a regenerative furnace, whose chamber had two (or two sets of) combustion air inlets and a separate outlet for combustion products, and which is provided with reversing valve means, additional to and synchronised with the reversing valve for alternately connecting the cold ends of the regenerators with the cold air supply and with the exhaust flue, and operative to connect the hot end of one regenerator alternately with the combusition air inlets and the hot end of the other regenerator with the combustion product outlet of the furnace chamber.
- the combustion product outlet of the furnace chamber is connected by a branched duct with corresponding ends of both regenerators and a three-port reversing valve is situated at the junction of the branches, while preheated air inlets on each side of the furnace are connected to one port of a second three-port reversing valve whose other two ports communicate respectively with one and the other of the regenerators, at the same end as is connected to the aforesaid branched duct, the two reversing valves being appropriately synchronised.
- cach of the three-port reversing valves may be replaced by a pair of two-port reversing valves, all four two-port valves being appropriately synchronised with the required phase relationships.
- the preheated air inlets are provided with burners to which a suitable fuel, e.g. a gas, is continuously supplied by suitable ducting.
- a suitable fuel e.g. a gas
- FIGURE 1 is a diagrammatic representation of the first embodiment, the furnace chamber being shown in schematic vertical section;
- FIGURES 2 and 3 are similar representations of the second and third embodiments respectively.
- Fuel supply lines are represented in thin line, and ducting carrying air and combustion products in heavy line; in one phase of the reversing cycle, the positions of the reversing valves, which are of the butterfly type, and the arrows indicating direction of flow, are in full line, and in the other phase of the cycle in dotted line; and the several reversing valves are operatively interconnected (mechanically or otherwise) for synchronisation, by means (not illustrated) giving the apropriate phase relationships.
- the furnace chamber 10 has combustion air inlets 12, 14 on each side, in which are disposed burners 16, 18, continuously supplied with fuel (oil or gas) by pipes 20.
- fuel oil or gas
- regenerators 24, 26 which operate alternately.
- Cold air enters through a pipe 28 and exhaust gases are extracted by a blower 30 from a pipe 32.
- a four-port reversing valve 34 is connected to pipes 28, 32 and also by pipes 36, 38 respectively to the cold ends of the regenerators 24, 26. As shown in the drawing in one (the first) phase of the regenerative cycle the valve 34 connects pipe 28 to pipe 36 and pipe 32 to pipe 38, these connections being reversed in the succeeding phase.
- regenerators Z4, 26 are respectively connected by branch pipes 40, 42 with pipes 44 and 46 which are alternately connected by a three-port reversing valve 48 with a pipe 52 leading from the exhaust outlet 22 of the furnace.
- Pipes 44, 46 are likewise alternately connected by a three-port reversing valve 50 with a pipe 54 having two branches 56, 58 connected to the combustion air inlets 12, 14 of the furnace.
- regenerator 24 is connected by pipes 40, 44 and the valve 50 with pipes 54, 56, 58 and regenerator 26 is connected by pipes 42, 46 and the valve 48, with the pipe 52.
- regenerator 24 is connected by pipes 40, 44 and the valve 50 with pipes 54, 56, 58 and regenerator 26 is connected by pipes 42, 46 and the valve 48, with the pipe 52.
- these connections are reversed.
- FIGURE 2 differs from that of FIGURE l only in the following respect:
- the three-port reversing valves 48, 50 of FIGURE 1 are replaced by two pairs of two-port reversing valves 60, 62 and 66, 64.
- Valves 60, 62 are placed in the run of pipe 44 on opposite sides of its junction with pipe 40 and are antiphased as shown; and valves 64, 66 are similarly placed in the run of pipe 46 with respect to its junction with pipe 42 and are likewise antiphased.
- valve 68 connects regenerator 24 via pipes 54, 56 and 58 with both the furnace inlets 12, 14 and connects regenerator 26, via pipe 52 with the furnace outlet 22, these connections being reversed in the second phase of the cycle.”
- means including additional valving, may be provided for re-circulating an adjustable proportion of cooled exhaust gases from the outlet to the inlet of the heat-receiving regenerator, with or without the addition of an adjustable proportion of cold or regeneratively preheated air (or gaseous oxidant) for completing the combustion or unburnt or partially burnt combustibles in the gases issuing from the furnace outlet.
- the invention is applicable to furnaces, such as rotary hearth furnaces or those through which the charge is continuously or in-V termittently propelled in a straight line, by pusher means or/ and by gravity, having more than one pair of regenera-v tors associated with different zones of the furnace.
- a regenerative furnace comprising: a furnace chamber having opposed side walls, end walls and a roof, said opposed side walls having inlets therein for the introduction of regeneratively preheated gaseous oxydant into said chamber, Said chamber having a single outlet for combustion products separate from said inlets; an exhaust blower having an inlet and an outlet; fluid fuel burner means disposed in each of said oxydant inlets;
- first and second regenerators for alternately absorbing heat froml hot combustion products and giving up heat to cold gaseous oxydant, each of said regenerators having a hot end for receiving combustion gases from said single -outlet and a cold end for receiving cold gaseous oxydant from said source; first reversing valve means associated with the cold ends of said regenerators operative in a first position to simultaneously connect the cold end of the first regenerator to said source of cold oxydant and the cold end of the second regenerator to the inlet of said exhaust blower and operative in a second position .to simultaneously connect the cold end of the second regenerator to said ⁇ source and the cold end of said first regenerator to the inlet of said exhaust blower; second reversing valve means downstream of said single outlet associated with the hot ends of said regenerators operative in a first position to simultaneously connect the hot end of the first regenerator to both said oxydant inlets and the hot end
- a regenerative furnace as in claim 1 wherein said second reversing valve means comprises two synchronized three-port valves, each valve having two ports connected respectively with the hot end of ⁇ one and the other of the regenerators, and the third ports of the three-port valves ⁇ being connected respectively with both said oxydant inlets and with said single outlet.
- a regenerative furnace as in claim 1 wherein said second reversing valve means comprises a pair of synchronized two-port valves associated with each regenerator, both of the valves of each pair having one port connected with the hot end of lthe associated regenerator, and the second port of one valve of each pair being connected with both of said oxydant inlets, the second port of the other valve of each pair being connected with saidV single outlet.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Air Supply (AREA)
Description
Sept. 2l, 1965 J, A, swAlN 3,207,493
REGENERATIVE FURNACES Filed Aug. 15, 1963 3 Sheets-Sheet 1 MM M @o Sept. 21, 1965 J. A. swAlN REGENERATIVE FURNACES Filed Aug. 15, 1963 3 Sheets-Sheet 2 Sept. 2l, 1965 '.1. A. swAlN A REGENERATIVE FURNACES 3 Sheets-Sheet 3 Filed Aug. l5, 1965 mwa United States Patent O 3,207,493 REGENERATIVE FURNACES John Arthur Swain, Birmingham, England, assignor to Incandescent Limited, Smethwick, England, a corporation of the United Kingdom Filed Aug. 15, 1963, Ser. No. 302,337 Claims priority, application Great Britain, Aug. 17, 1962, 31,683/ 62 4 Claims. (Cl. 263-15) This invention relates to regenerative furnaces, in which the combustion air (or oxygen or oxygen-enriched air), hereinafter referred to for brevity as air, is preheated by paired regenerators which alternately receive heat from the combustion products and reject heat to the combustion air.
In hitherto conventional practice, such furnaces have had two sets of burners, usually disposed on opposite sides of the working chamber of the furnace, to which sets of burners the preheated air and fuel for combustion are alternately fed, the combustion products being taken off alternately from one and the other of two outlets, which, in practice are usually the same as the preheated air inlets containing the burners.
Such an arrangement entails cyclical reversal of the flow of combustion products from one side of the furnace to the other and consequent uneven heating of the charge in the furnace chamber. Moreover, since in each half cycle one set of burners is inactive, each set of burners (and the ducting leading thereto), must be capable of handling twice as much air and fuel as they would have to if all the burners were operative continuously.
The principal aim of the invention is to provide means enabling all the burners (on both sides of the furnace chamber) to operate continuously and to eliminate cyclical reversal of flow of combustion products within the furnace chamber.
An object of this invention is a regenerative furnace, whose chamber had two (or two sets of) combustion air inlets and a separate outlet for combustion products, and which is provided with reversing valve means, additional to and synchronised with the reversing valve for alternately connecting the cold ends of the regenerators with the cold air supply and with the exhaust flue, and operative to connect the hot end of one regenerator alternately with the combusition air inlets and the hot end of the other regenerator with the combustion product outlet of the furnace chamber.
In one preferred form of construction the combustion product outlet of the furnace chamber is connected by a branched duct with corresponding ends of both regenerators and a three-port reversing valve is situated at the junction of the branches, while preheated air inlets on each side of the furnace are connected to one port of a second three-port reversing valve whose other two ports communicate respectively with one and the other of the regenerators, at the same end as is connected to the aforesaid branched duct, the two reversing valves being appropriately synchronised.
Alternatively, cach of the three-port reversing valves may be replaced by a pair of two-port reversing valves, all four two-port valves being appropriately synchronised with the required phase relationships.
It is possible to replace the two three-port reversing valves by a single four-port reversing valve.
In each form of construction described above, the preheated air inlets are provided with burners to which a suitable fuel, e.g. a gas, is continuously supplied by suitable ducting.
The objects and nature of the invention will be better understood from the following description, with reference to the accompanying drawings of three embodiments of ice the invention, given by way of example only and without limitation of the scope of the invention, which is defined in the hereto appended claims, of these drawings:
FIGURE 1 is a diagrammatic representation of the first embodiment, the furnace chamber being shown in schematic vertical section; and
FIGURES 2 and 3 are similar representations of the second and third embodiments respectively.
In these drawings:
Fuel supply lines are represented in thin line, and ducting carrying air and combustion products in heavy line; in one phase of the reversing cycle, the positions of the reversing valves, which are of the butterfly type, and the arrows indicating direction of flow, are in full line, and in the other phase of the cycle in dotted line; and the several reversing valves are operatively interconnected (mechanically or otherwise) for synchronisation, by means (not illustrated) giving the apropriate phase relationships.
In these drawings, elements common to more than one of the embodiments illustrated, are identified by the same reference characters.
Referring to FIGURE l, the furnace chamber 10 has combustion air inlets 12, 14 on each side, in which are disposed burners 16, 18, continuously supplied with fuel (oil or gas) by pipes 20. In the roof of the furnace is an outlet 22 through which the hot combustion products are extracted.
The combustion air is heated by regenerators 24, 26 which operate alternately. Cold air enters through a pipe 28 and exhaust gases are extracted by a blower 30 from a pipe 32. A four-port reversing valve 34 is connected to pipes 28, 32 and also by pipes 36, 38 respectively to the cold ends of the regenerators 24, 26. As shown in the drawing in one (the first) phase of the regenerative cycle the valve 34 connects pipe 28 to pipe 36 and pipe 32 to pipe 38, these connections being reversed in the succeeding phase.
The hot ends of the regenerators Z4, 26 are respectively connected by branch pipes 40, 42 with pipes 44 and 46 which are alternately connected by a three-port reversing valve 48 with a pipe 52 leading from the exhaust outlet 22 of the furnace.
The reversing valves 34, 48, 50 are mechanically 0r otherwise (eg. pneumatically, hydraulically or electrically) synchronized in such a way that in the first phase of the regenerative cycle, regenerator 24 is connected by pipes 40, 44 and the valve 50 with pipes 54, 56, 58 and regenerator 26 is connected by pipes 42, 46 and the valve 48, with the pipe 52. In the succeeding (or second) phase these connections are reversed.
The embodiment illustrated in FIGURE 2 differs from that of FIGURE l only in the following respect:
The three- port reversing valves 48, 50 of FIGURE 1 are replaced by two pairs of two- port reversing valves 60, 62 and 66, 64. Valves 60, 62 are placed in the run of pipe 44 on opposite sides of its junction with pipe 40 and are antiphased as shown; and valves 64, 66 are similarly placed in the run of pipe 46 with respect to its junction with pipe 42 and are likewise antiphased.
Between valves 62 and 66, pipes 44, 46 are both joined directly .to pipe 52, and the portions of pipes 44, 46, extending beyond valves 60 and 64 respectively are both joined directly to pipe 54.
In the embodiment of FIGURE 3, the two three- port reversing valves 48, 50 of FIGURE l are replaced by a single four-port reversing valve 68, of Which two opposite ports are directly connected to pipes 40 and 42 respectively and the two other opposite ports are respectively connected to pipe-52 and pipe 54, the latter being directly joined as in FIGURE 1 to pipes 56 and 58 and the pipes 44, 46 are eliminated. In the first phase of the cycle, valve 68 connects regenerator 24 via pipes 54, 56 and 58 with both the furnace inlets 12, 14 and connects regenerator 26, via pipe 52 with the furnace outlet 22, these connections being reversed in the second phase of the cycle."
It will be evident that, in each of the three embodiments illustrated, the arrangement of reversing valves and pipes, while effecting the normal regenerative cycle, by which the regenerators alternately receive and reject heat, ensures that regeneratively preheated air is continuously supplied to the burners on both sides of the furnace, at the same time elimi-nating the need for a reversing valve in the fuel supply Vsystem of the burners.
It is to be understood that within the scope of the in` vention as defined in the hereto appended claims, `any or all such modifications, variations or additions of or t what has been hereinbefore described as are within the competence of those skilled in the art may be made. For example, the constructional details of the furnace, the regenerators, the ducting, .the burners, the reversing valves and their synchronising means, and the like may be of any suitable conventional design, and for this reason these details have not been illustrated or described. Again, means, including additional valving, may be provided for re-circulating an adjustable proportion of cooled exhaust gases from the outlet to the inlet of the heat-receiving regenerator, with or without the addition of an adjustable proportion of cold or regeneratively preheated air (or gaseous oxidant) for completing the combustion or unburnt or partially burnt combustibles in the gases issuing from the furnace outlet. Moreover, the invention is applicable to furnaces, such as rotary hearth furnaces or those through which the charge is continuously or in-V termittently propelled in a straight line, by pusher means or/ and by gravity, having more than one pair of regenera-v tors associated with different zones of the furnace.
What is claimed is:
1. A regenerative furnace comprising: a furnace chamber having opposed side walls, end walls and a roof, said opposed side walls having inlets therein for the introduction of regeneratively preheated gaseous oxydant into said chamber, Said chamber having a single outlet for combustion products separate from said inlets; an exhaust blower having an inlet and an outlet; fluid fuel burner means disposed in each of said oxydant inlets;
means for continuously supplying fluid fuel to all of said burner means; a source of cold gaseous oxydant; first and second regenerators for alternately absorbing heat froml hot combustion products and giving up heat to cold gaseous oxydant, each of said regenerators having a hot end for receiving combustion gases from said single -outlet and a cold end for receiving cold gaseous oxydant from said source; first reversing valve means associated with the cold ends of said regenerators operative in a first position to simultaneously connect the cold end of the first regenerator to said source of cold oxydant and the cold end of the second regenerator to the inlet of said exhaust blower and operative in a second position .to simultaneously connect the cold end of the second regenerator to said `source and the cold end of said first regenerator to the inlet of said exhaust blower; second reversing valve means downstream of said single outlet associated with the hot ends of said regenerators operative in a first position to simultaneously connect the hot end of the first regenerator to both said oxydant inlets and the hot end of the second regenerator to said single outlet and operative in a second position to simultaneously connect the hot end of the second regenerator to both said oxydant inlets and the hot end of the first regenerator to said single outlet.
2. A regenerative furnace as in claim 1 wherein said second reversing valve means comprises two synchronized three-port valves, each valve having two ports connected respectively with the hot end of` one and the other of the regenerators, and the third ports of the three-port valves `being connected respectively with both said oxydant inlets and with said single outlet.
3. A regenerative furnace as in claim 1 wherein said second reversing valve means comprises a pair of synchronized two-port valves associated with each regenerator, both of the valves of each pair having one port connected with the hot end of lthe associated regenerator, and the second port of one valve of each pair being connected with both of said oxydant inlets, the second port of the other valve of each pair being connected with saidV single outlet.
4. A regenerative furnace as in claim 1 wherein said References Cited bythe Examiner UNITED STATES PATENTS 1,925,941 9/33 Simpson 263-15 2,429,880 10/,47 Hays 263--15l 2,574,740 11/51 Hartman 263-15 2,655,363 10/53 Roof 263-15 2,288,491 6/42 Seil 263-15- WILLIAM F. ODEA, Acting Primary Examiner. CHARLES SUKALO, Examiner.
Claims (1)
1. A REGENERATIVE FURNACE COMPRISING: A FURNACE CHAMBER HAVING OPPOSED SIDE WALLS, END WALLS AND A ROOF, SAID OPPOSED SIDE WALLS HAVING INLETS THEREIN FOR THE INTRODUCTION OF REGENERATIVELY PREHEATED GASEOUS OXYDANT INTO SAID CHAMBER, SAID CHAMBER HAVING A SINGLE OUTLET FOR COMBUSTION PRODUCTS SEPARATE FROM SAID INLETS; AN EXHAUST BLOWER HAVING AN INLET AND AN OUTLET; FLUID FUEL BURNER MEANS DISPOSED IN EACH OF SAID OXYDANT INLETS; MEANS FOR CONTINUOUSLY SUPPLYING FLUID FUEL TO ALL OF SAID BURNER MEANS; A SOURCE OF COLD GASEOUS OXYDANT; FIRST AND SECOND REGENERATORS FOR ALTERNATELY ABSORBING HEAT FROM HOT COMBUSTION PRODUCTS AND GIVING UP HEAT TO COLD GASEOUS OXYDANT, EACH OF SAID REGENERATORS HAVING A HOT END FOR RECEIVING COMBUSTION GASES FROM SID SINGLE OUTLET AND A COLD END FOR RECEIVING COLD GASEOUS OXYDANT FROM SAID SOURCE; FIRST REVERSING VALVE MEANS ASSOCIATED WITH THE COLD ENDS OF SAID REGENERATORS OPERATIVE IN A FIRST POSITION TO SIMULTANEOUSLY CONNECT THE COLD END OF THE FIRST REGENERATOR TO SAID SOURCE OF COLD OXYDANT AND THE COLD END OF THE SECOND REGENERATOR TO THE INLET OF SAID EXHAUST BLOWER AND OPERATIVE IN A SECOND POSITION TO SIMULTANEOUSLY CONNECT THE COLD END OF THE SECOND REGENERATOR TO SAID SOURCE AND THE COLD END OF SAID FIRST REGENERATOR TO THE INLET OF SAID EXHAUST BLOWER; SECOND REVERSING VALVE MEANS DOWNSTREAM OF SAID SINGLE OUTLET ASSOCIATED WITH THE HOT ENDS OF SAID REGENERATORS OPERATIVE IN A FIRST POSITION TO SIMULTANEOUSLY CONNECT THE HOT END OF THE FIRST REGENERATOR TO BOTH SAID OXYDANT INLETS AND THE HOT END OF THE SECOND REGENERATOR TO SAID SINGLE OUTLET AND OPERATIVE IN A SECOND POSITION TO SIMULTENEOUSLY CONNECT THE HOT END OF THE SECOND REGENERATOR TO BOTH AID OXYDANT INLETS AND THE HOT END OF THE FIRST REGENERATOR TO SAID SINGLE OUTLET.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB31683/62A GB1004573A (en) | 1962-08-17 | 1962-08-17 | Improvements in regenerative furnaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3207493A true US3207493A (en) | 1965-09-21 |
Family
ID=10326841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US302337A Expired - Lifetime US3207493A (en) | 1962-08-17 | 1963-08-15 | Regenerative furnaces |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3207493A (en) |
| DE (1) | DE1936993U (en) |
| GB (1) | GB1004573A (en) |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3870474A (en) * | 1972-11-13 | 1975-03-11 | Reagan Houston | Regenerative incinerator systems for waste gases |
| US4560349A (en) * | 1984-09-14 | 1985-12-24 | Sivaco Quebec | Heat recuperator and method for use with gas-fired furnace using nozzle or pre-mix burners |
| US4666403A (en) * | 1986-08-06 | 1987-05-19 | Morgan Construction Company | Air preheating system for continuous fired furnace |
| US4812117A (en) * | 1986-04-15 | 1989-03-14 | Nab-Konsult | Method and device for pre-heating waste metal for furnaces |
| US4829703A (en) * | 1987-08-04 | 1989-05-16 | Gas Research Institute | Auxiliary flue for furnaces |
| US4878480A (en) * | 1988-07-26 | 1989-11-07 | Gas Research Institute | Radiant tube fired with two bidirectional burners |
| US5059117A (en) * | 1988-02-11 | 1991-10-22 | Stordy Combustion Engineering Limited | Radiant tube furnace and method of burning a fuel |
| US5145363A (en) * | 1988-10-17 | 1992-09-08 | Haldor Topsoe A/S | Method and an apparatus for continuously purifying an oxygen-containing gas for combustible contaminants |
| US5203859A (en) * | 1992-04-22 | 1993-04-20 | Institute Of Gas Technology | Oxygen-enriched combustion method |
| US5695002A (en) * | 1993-01-19 | 1997-12-09 | Nippon Furnace Kogyo Kaisha, Ltd. | High-cycle regenerative heat exchanger |
| US5830284A (en) * | 1993-06-03 | 1998-11-03 | Loi Thermprocess Gmbh | Method and device for the heat treatment of workpieces |
| US5833938A (en) * | 1996-05-20 | 1998-11-10 | Megtec Systems, Inc. | Integrated VOC entrapment system for regenerative oxidation |
| US5888063A (en) * | 1996-03-07 | 1999-03-30 | Scott; Gregory J. | Method and apparatus for quick purging a multiple bed regenerative fume incinerator |
| EP0928938A1 (en) * | 1998-01-06 | 1999-07-14 | Praxair Technology, Inc. | Regenerative oxygen preheat process for oxy-fuel fired furnaces |
| US5931663A (en) * | 1997-02-27 | 1999-08-03 | Process Combustion Corporation | Purge system for regenerative thermal oxidizer |
| US5997292A (en) * | 1994-08-10 | 1999-12-07 | Nippon Furnace Kogyo Kabushiki Kaisha | High-temperature gas generator |
| US6036486A (en) * | 1996-01-25 | 2000-03-14 | Frazier-Simplex, Inc. | Heat regeneration for oxy-fuel fired furnaces |
| EP1953489A1 (en) * | 2007-01-29 | 2008-08-06 | KBA-MetalPrint GmbH | Dynamic heat exchanger and method for exchanging heat |
| US20100199839A1 (en) * | 2009-02-12 | 2010-08-12 | Ford Global Technologies, Llc | Particulate matter retaining and purging system |
| DE102010029648A1 (en) | 2010-06-02 | 2011-04-07 | Kutzner, Dieter, Dipl.-Ing. | Method for melting e.g. aluminum scrap or glass, for heat treatment of steel in hearth furnace, involves operating burners of furnace using radiant flame, and supplying oxygen to combustion air flow to enrich air on pressure side of blower |
| WO2012148294A2 (en) | 2011-04-28 | 2012-11-01 | Instytut Inżynieri̇i̇ Chemi̇cznej Polskiej Akademi̇i̇ Nauk | Method for utilization of low-concentration gas mixtures of combustible gas and air with stable heat energy recovery and flow reversal device for implementation of the method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE8207166D0 (en) * | 1982-12-15 | 1982-12-15 | Svante Thunberg | REGENERATIVE HEAT EXCHANGER WITH MOISTURIZING AND TEMPERATURES |
| CN106196146B (en) * | 2016-06-29 | 2019-05-24 | 北京航空航天大学 | A kind of energy-saving thermal storage formula high temperature pure air pilot system |
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| US1925941A (en) * | 1931-06-29 | 1933-09-05 | Internat Chromium Process Corp | Furnace |
| US2288491A (en) * | 1940-12-14 | 1942-06-30 | Gilbert E Seil | Open hearth furnace |
| US2429880A (en) * | 1945-01-05 | 1947-10-28 | Carnegie Illinois Steel Corp | Method for operating sectionable heat exchangers |
| US2574740A (en) * | 1948-02-11 | 1951-11-13 | Meehanite Metal Corp | Heated blast cupola |
| US2655363A (en) * | 1951-08-01 | 1953-10-13 | Jay L Roof | Furnace valve construction |
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1962
- 1962-08-17 GB GB31683/62A patent/GB1004573A/en not_active Expired
-
1963
- 1963-07-25 DE DEJ11855U patent/DE1936993U/en not_active Expired
- 1963-08-15 US US302337A patent/US3207493A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1925941A (en) * | 1931-06-29 | 1933-09-05 | Internat Chromium Process Corp | Furnace |
| US2288491A (en) * | 1940-12-14 | 1942-06-30 | Gilbert E Seil | Open hearth furnace |
| US2429880A (en) * | 1945-01-05 | 1947-10-28 | Carnegie Illinois Steel Corp | Method for operating sectionable heat exchangers |
| US2574740A (en) * | 1948-02-11 | 1951-11-13 | Meehanite Metal Corp | Heated blast cupola |
| US2655363A (en) * | 1951-08-01 | 1953-10-13 | Jay L Roof | Furnace valve construction |
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3870474A (en) * | 1972-11-13 | 1975-03-11 | Reagan Houston | Regenerative incinerator systems for waste gases |
| US4560349A (en) * | 1984-09-14 | 1985-12-24 | Sivaco Quebec | Heat recuperator and method for use with gas-fired furnace using nozzle or pre-mix burners |
| US4812117A (en) * | 1986-04-15 | 1989-03-14 | Nab-Konsult | Method and device for pre-heating waste metal for furnaces |
| US4666403A (en) * | 1986-08-06 | 1987-05-19 | Morgan Construction Company | Air preheating system for continuous fired furnace |
| US4829703A (en) * | 1987-08-04 | 1989-05-16 | Gas Research Institute | Auxiliary flue for furnaces |
| US5059117A (en) * | 1988-02-11 | 1991-10-22 | Stordy Combustion Engineering Limited | Radiant tube furnace and method of burning a fuel |
| US4878480A (en) * | 1988-07-26 | 1989-11-07 | Gas Research Institute | Radiant tube fired with two bidirectional burners |
| US5145363A (en) * | 1988-10-17 | 1992-09-08 | Haldor Topsoe A/S | Method and an apparatus for continuously purifying an oxygen-containing gas for combustible contaminants |
| US5203859A (en) * | 1992-04-22 | 1993-04-20 | Institute Of Gas Technology | Oxygen-enriched combustion method |
| US5695002A (en) * | 1993-01-19 | 1997-12-09 | Nippon Furnace Kogyo Kaisha, Ltd. | High-cycle regenerative heat exchanger |
| US5830284A (en) * | 1993-06-03 | 1998-11-03 | Loi Thermprocess Gmbh | Method and device for the heat treatment of workpieces |
| US5997292A (en) * | 1994-08-10 | 1999-12-07 | Nippon Furnace Kogyo Kabushiki Kaisha | High-temperature gas generator |
| US6036486A (en) * | 1996-01-25 | 2000-03-14 | Frazier-Simplex, Inc. | Heat regeneration for oxy-fuel fired furnaces |
| US5888063A (en) * | 1996-03-07 | 1999-03-30 | Scott; Gregory J. | Method and apparatus for quick purging a multiple bed regenerative fume incinerator |
| US5833938A (en) * | 1996-05-20 | 1998-11-10 | Megtec Systems, Inc. | Integrated VOC entrapment system for regenerative oxidation |
| US5931663A (en) * | 1997-02-27 | 1999-08-03 | Process Combustion Corporation | Purge system for regenerative thermal oxidizer |
| EP0928938A1 (en) * | 1998-01-06 | 1999-07-14 | Praxair Technology, Inc. | Regenerative oxygen preheat process for oxy-fuel fired furnaces |
| KR100445568B1 (en) * | 1998-01-06 | 2004-08-25 | 프랙스에어 테크놀로지, 인코포레이티드 | Regenerative oxygen preheat process and apparatus for oxy-fuel fired furnaces |
| AU2008200399B2 (en) * | 2007-01-29 | 2011-11-10 | Dürr Systems Ag | Dynamic heat accumulator and method for storing heat |
| US20080210218A1 (en) * | 2007-01-29 | 2008-09-04 | Kba-Metalprint Gmbh & Co. Kg | Dynamic heat accumulator and method for storing heat |
| CN101251350B (en) * | 2007-01-29 | 2011-04-06 | Kba金属印刷有限公司 | Dynamic heat accumulator and method for storing heat |
| EP1953489A1 (en) * | 2007-01-29 | 2008-08-06 | KBA-MetalPrint GmbH | Dynamic heat exchanger and method for exchanging heat |
| US20100199839A1 (en) * | 2009-02-12 | 2010-08-12 | Ford Global Technologies, Llc | Particulate matter retaining and purging system |
| US8388712B2 (en) * | 2009-02-12 | 2013-03-05 | Ford Global Technologies, Llc | Particulate matter retaining and purging system |
| DE102010029648A1 (en) | 2010-06-02 | 2011-04-07 | Kutzner, Dieter, Dipl.-Ing. | Method for melting e.g. aluminum scrap or glass, for heat treatment of steel in hearth furnace, involves operating burners of furnace using radiant flame, and supplying oxygen to combustion air flow to enrich air on pressure side of blower |
| WO2012148294A2 (en) | 2011-04-28 | 2012-11-01 | Instytut Inżynieri̇i̇ Chemi̇cznej Polskiej Akademi̇i̇ Nauk | Method for utilization of low-concentration gas mixtures of combustible gas and air with stable heat energy recovery and flow reversal device for implementation of the method |
| US9651249B2 (en) | 2011-04-28 | 2017-05-16 | Instytut Inżynierii Chemicznej Polskiej Akademii Nauk | Method for utilization of low-concentration gas mixtures of combustible gas and air with stable heat energy recovery |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1936993U (en) | 1966-04-21 |
| GB1004573A (en) | 1965-09-15 |
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