CN102269518A - Combustion control method of regenerative-combustion heat treatment furnace - Google Patents
Combustion control method of regenerative-combustion heat treatment furnace Download PDFInfo
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- CN102269518A CN102269518A CN2011101508313A CN201110150831A CN102269518A CN 102269518 A CN102269518 A CN 102269518A CN 2011101508313 A CN2011101508313 A CN 2011101508313A CN 201110150831 A CN201110150831 A CN 201110150831A CN 102269518 A CN102269518 A CN 102269518A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
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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
- F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
- F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
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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
- F23D14/46—Details, e.g. noise reduction means
- F23D14/66—Preheating the combustion air or gas
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- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2208/00—Control devices associated with burners
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- 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
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- General Engineering & Computer Science (AREA)
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- Gas Burners (AREA)
- Furnace Details (AREA)
- Regulation And Control Of Combustion (AREA)
- Control Of Combustion (AREA)
Abstract
The invention provides a combustion control method of a regenerative-combustion heat treatment furnace, wherein the quantities of the fuel gas and the combustion air supplied by a fuel gas supply pipe and an air supply pipe are fixed during the alternated switching of the combustion orpeation and the regerative operation of a pair of regenerative burners so as to stably perform the proper combustion. During the switching of the combustion orpeation and the regenerative operation of the pair of regenerative burners (20), in the regerative burner (20a) operated in the combustion action the quantities of the fuel gas and the combustion air supplied by the fuel gas supply pipe (28a) and the air supply pipe (24a) are decreasing from the beginning of the normal combustion process. While in the regerative burner (20b) operated in the regenerative action the quantities of the fuel gas and the combustion air supplied by the fuel gas supply pipe (28a) and the air supply pipe (24a) are increasing from the stopped state. Therefore, the quantities of the fuel gas and the combustion air supplied by the fuel gas supply pipe and the air supply pipe are fixed in the pair of regenerative burners.
Description
Related application
It is 2010-127569 number priority that the application requires Japanese patent application No..
Technical field
The present invention relates to a kind of method for controlling combustion of regenerative-combustion heat treat furnace, this regenerative-combustion heat treat furnace is provided with at least one pair of heat-storage type burner, and this a pair of heat-storage type burner has: the burning portion that comprises the fuel gas supply pipe; Accommodate the regenerator of accumulation of heat material; Regenerator is supplied with the air supply pipe of combustion air; And the exhaust emission tube of discharging burnt gas from regenerator, in a heat-storage type burner, combustion air is guided to burning portion from air supply pipe via regenerator, and carry out combustion event from the fuel gas supply pipe inspection fuel gas of this burning portion, and in another heat-storage type burner, carry out burnt gas being guided to above-mentioned regenerator and the heat storage in the burnt gas being moved its accumulation of heat of discharging from exhaust emission tube to the accumulation of heat material, alternately switch above-mentioned combustion event and accumulation of heat action in this a pair of heat-storage type burner.Especially has following feature: in above-mentioned regenerative-combustion heat treat furnace, the quantity delivered of the fuel gas that fuel gas supply pipe from each heat-storage type burner is supplied with and come and supply with and the quantity delivered of the combustion air that comes is fixed from air supply pipe is stably to carry out suitable burning.
Background technology
All the time, when processed material is heat-treated, use following regenerative-combustion heat treat furnace, it is provided with at least one pair of heat-storage type burner, and this a pair of heat-storage type burner has: the burning portion that comprises the fuel gas supply pipe; Accommodate the regenerator of accumulation of heat material; Regenerator is supplied with the air supply pipe of combustion air; And the exhaust emission tube of discharging burnt gas from regenerator, in a heat-storage type burner, combustion air is guided to burning portion from air supply pipe via regenerator, and carry out combustion event from the fuel gas supply pipe inspection fuel gas of this burning portion, and in another heat-storage type burner, carry out burnt gas being guided to above-mentioned regenerator and the heat storage in the burnt gas being moved its accumulation of heat of discharging from exhaust emission tube to the accumulation of heat material, alternately switch above-mentioned combustion event and accumulation of heat action in this a pair of heat-storage type burner.
In addition, in above-mentioned regenerative-combustion heat treat furnace, in order to heat-treat processed material continuously, can use following regenerative-combustion heat treat furnace, in above-mentioned heat-treatment furnace, be provided with manyly, make the moment of switching combustion event and accumulation of heat action different to heat-storage type burner at each to heat-storage type burner.
In addition, in above-mentioned regenerative-combustion heat treat furnace, with the fuel gas supply pipe of fuel gas supply to above-mentioned each heat-storage type burner the time, generally fuel gas is supplied to each fuel gas supply pipe from the fuel gas feeding device of the fuel gas of supplying with fixed amount.
At this, in the past, shown in Japanese patent laid-open 10-185176 communique and Japanese patent laid-open 11-159744 communique, in above-mentioned regenerative-combustion heat treat furnace, when combustion event in alternately switching a pair of heat-storage type burner and accumulation of heat action, in the heat-storage type burner in being in combustion event, behind the fuel gas supply in stopping the fuel gas supply pipe, the supply of the combustion air in the air supply pipe is stopped, and in the heat-storage type burner in being in the accumulation of heat action, after the supply of the combustion air in the beginning air supply pipe, the supply of the fuel gas in the fuel gas supply pipe is begun.
Yet, as mentioned above, in regenerative-combustion heat treat furnace, be provided with many to heat-storage type burner, each to heat-storage type burner in, when for making the moment of switching combustion event and accumulation of heat action different and a certain amount of fuel gas is supplied to from the burning gases feedway under the situation of regenerative-combustion heat treat furnace of each fuel gas supply pipe, in a pair of heat-storage type burner that switches combustion event and accumulation of heat action, temporarily stop the amount of the fuel gas next as mentioned above via the supply of fuel gas supply pipe, consequently, the amount of fuel gas of fuel gas supply pipe that is supplied to other heat-storage type burner centering from fuel gas feeding device is increased.Consequently, exist in other heat-storage type burner centering, the ratio of fuel gas and combustion air increases, and fired state changes, thereby can't stably carry out the such problem of suitable burning.Especially, at the gas that uses the flammability difference, for example propane flammable gas during as above-mentioned fuel gas, if the ratio of propane flammable gas and combustion air increases, then exist produce black smoke (coal) because of imperfect combustion thus cause problem on the environment, also exist because of coal is attached on the processed material, can't suitably heat-treat such problem thus.
Summary of the invention
Technical problem of the present invention is to solve the problems referred to above in the following this regenerative-combustion heat treat furnace, this regenerative-combustion heat treat furnace is provided with at least one pair of heat-storage type burner, and this a pair of heat-storage type burner has: the burning portion that comprises the fuel gas supply pipe; Accommodate the regenerator of accumulation of heat material; Regenerator is supplied with the air supply pipe of combustion air; And the exhaust emission tube of discharging burnt gas from regenerator, in a heat-storage type burner, combustion air is guided to burning portion from air supply pipe via regenerator, and carry out combustion event from the fuel gas supply pipe inspection fuel gas of this burning portion, and in another heat-storage type burner, carry out burnt gas being guided to above-mentioned regenerator and the heat storage in the burnt gas being moved its accumulation of heat of discharging from exhaust emission tube to the accumulation of heat material, alternately switch above-mentioned combustion event and accumulation of heat action in this a pair of heat-storage type burner.
Promptly, when technical problem of the present invention is above-mentioned combustion event in alternately switching a pair of heat-storage type burner and accumulation of heat action, the quantity delivered of the fuel gas that fuel gas supply pipe from each heat-storage type burner is supplied with and come and supply with and the quantity delivered of the combustion air that comes is fixed from air supply pipe is stably to carry out suitable burning.
For solving the problems of the technologies described above, the invention provides a kind of method for controlling combustion of regenerative-combustion heat treat furnace, wherein, above-mentioned regenerative-combustion heat treat furnace is provided with at least one pair of heat-storage type burner, and above-mentioned a pair of heat-storage type burner has: the burning portion that comprises the fuel gas supply pipe; Contain the regenerator of accumulation of heat material; Combustion air is supplied to the air supply pipe of regenerator; And with the exhaust emission tube of burnt gas from the regenerator discharge, in a heat-storage type burner, combustion air is guided to burning portion from air supply pipe via regenerator, and carry out combustion event from the fuel gas supply pipe inspection fuel gas of this burning portion, and in another heat-storage type burner, carry out burnt gas being guided to above-mentioned regenerator and the heat storage of burnt gas is being moved burnt gas to the accumulation of heat material from the accumulation of heat of exhaust emission tube discharge, alternately switch above-mentioned combustion event and the accumulation of heat action carried out in this a pair of heat-storage type burner, in the method for controlling combustion of above-mentioned regenerative-combustion heat treat furnace, when combustion event in switching above-mentioned a pair of heat-storage type burner and accumulation of heat action, in the heat-storage type burner in being in combustion event, make the quantity delivered of the fuel gas in the fuel gas supply pipe and the quantity delivered of the combustion air in the air supply pipe begin to reduce from the normal combustion state, and in the heat-storage type burner in being in the accumulation of heat action, make the quantity delivered of the fuel gas in the fuel gas supply pipe and the quantity delivered of the combustion air in the air supply pipe begin to increase from halted state, and in above-mentioned a pair of heat-storage type burner, the quantity delivered of the quantity delivered of the fuel gas that comes from the supply of fuel gas supply pipe next combustion air with supplying with from air supply pipe is fixed.
At this, when combustion event in switching a pair of heat-storage type burner as mentioned above and accumulation of heat action, in the heat-storage type burner in being in combustion event, the quantity delivered of the fuel gas in the fuel gas supply pipe and the quantity delivered of the combustion air in the air supply pipe are reduced, and in the heat-storage type burner in being in combustion event, the quantity delivered of the fuel gas in the fuel gas supply pipe and the quantity delivered of the combustion air in the air supply pipe are increased, in this a pair of heat-storage type burner, if the quantity delivered of the combustion air that makes the quantity delivered of the fuel gas that comes from the supply of fuel gas supply pipe and come from the air supply pipe supply is fixed, then when switching combustion event and accumulation of heat action, make amount and the amount of combustion air and their fixed ratio of the fuel gas that is supplied to regenerative-combustion heat treat furnace by this a pair of heat-storage type burner, thereby can stably carry out suitable burning.
At this, as above-mentioned regenerative-combustion heat treat furnace, can use following regenerative-combustion heat treat furnace, be provided with manyly to heat-storage type burner, make the moment of switching combustion event and accumulation of heat action different at each to heat-storage type burner.
In addition, in the method for controlling combustion of regenerative-combustion heat treat furnace of the present invention, fuel gas can be supplied to fuel gas supply pipe each heat-storage type burner from the fuel gas feeding device of the fuel gas of supplying with fixed amount.In this case, fix owing to the quantity delivered that can in a pair of heat-storage type burner that switches combustion event and accumulation of heat action as mentioned above, make the fuel gas that supplies with from the fuel gas supply pipe with from the quantity delivered that air supply pipe is supplied with the combustion air that comes, thereby supply has the fuel gas and the combustion air of fixed amount in regenerative-combustion heat treat furnace.
In addition, many when being provided with at regenerative-combustion heat treat furnace as mentioned above to heat-storage type burner, and heat-storage type burner is made under the different situation of moment of switching combustion event and accumulation of heat action at each, in a pair of heat-storage type burner that switches combustion event and accumulation of heat action as mentioned above, supply with the fuel gas and the combustion air of fixed amount, consequently, the amount that is supplied to the fuel gas of the right fuel gas supply pipe of other heat-storage type burner from above-mentioned fuel gas feeding device can not increase, other heat-storage type burner centering, the ratio of fuel gas and combustion air is maintained fixed.
In addition, in the method for controlling combustion of regenerative-combustion heat treat furnace of the present invention, comparatively it is desirable to, when combustion event in switching a pair of heat-storage type burner and accumulation of heat action, in the heat-storage type burner in being in combustion event, after the supply of the fuel gas in having stopped the fuel gas supply pipe and the supply of the combustion air in the air supply pipe burnt gas is discharged from exhaust emission tube, and in the heat-storage type burner in being in the accumulation of heat action, stopping with burnt gas after the operation that exhaust emission tube is discharged the supply of the fuel gas in the beginning fuel gas supply pipe and the supply of the combustion air in the air supply pipe.Like this, when switching combustion event and accumulation of heat action, in the change action that utilizes transfer valve etc. to carry out, can prevent from reliably not enter regenerator and discharge, thereby can make the fuel gas that is supplied in the regenerative-combustion heat treat furnace and the ratio of combustion air be in the state of fixing more via exhaust emission tube from the part that air supply pipe guides to the combustion air of regenerator.
In the method for controlling combustion of regenerative-combustion heat treat furnace of the present invention, when combustion event in switching a pair of heat-storage type burner as mentioned above and accumulation of heat action, in the heat-storage type burner in being in combustion event, the quantity delivered of the fuel gas in the fuel gas supply pipe and the quantity delivered of the combustion air in the air supply pipe are reduced, and in the heat-storage type burner in being in the accumulation of heat action, the quantity delivered of the fuel gas in the fuel gas supply pipe and the quantity delivered of the combustion air in the air supply pipe are increased, in above-mentioned a pair of heat-storage type burner integral body, owing to the quantity delivered that can make the fuel gas that supplies with from the fuel gas supply pipe is fixed with the quantity delivered of the combustion air that comes from the air supply pipe supply, therefore, when switching combustion event and accumulation of heat action, also can in regenerative-combustion heat treat furnace, supply with the fuel gas and the combustion air of fixed amount.
Consequently, the variation of the fired state in the time of being suppressed at the combustion event switched in a pair of heat-storage type burner and accumulation of heat action in the regenerative-combustion heat treat furnace, thus can stably carry out suitable burning.
In addition, when the fuel gas feeding device of fuel gas from the fuel gas of supply fixed amount is supplied under the situation of the fuel gas supply pipe each heat-storage type burner, in a pair of heat-storage type burner that switches combustion event and accumulation of heat action as mentioned above, owing in regenerative-combustion heat treat furnace, supply with fuel gas and the combustion air that fixed amount is arranged, therefore, the total amount that is supplied to the fuel gas of each heat-storage type burner from fuel gas feeding device can not change, thereby can stably carry out suitable burning.
In addition, switch under the combustion event situation different when in regenerative-combustion heat treat furnace, being provided with many heat-storage type burner being made with the moment of accumulation of heat action to heat-storage type burner and at each, the amount that is supplied to the fuel gas of the right fuel gas supply pipe of other heat-storage type burner from fuel gas feeding device can not increase as mentioned above, other heat-storage type burner centering, also the ratio of fuel gas and combustion air can be maintained fixed, thereby can stably carry out suitable burning.Therefore, even the fuel gas that comes from the supply of fuel gas supply pipe uses the propane flammable gas of flammability difference etc., also can prevent to produce black smoke (coal), thereby can not cause that problem or coal on the environment are attached to the such situation of processed material.
Description of drawings
Fig. 1 is the schematic sectional view of the internal state of expression regenerative-combustion heat treat furnace in the method for controlling combustion of the regenerative-combustion heat treat furnace of an embodiment of the present invention.
Fig. 2 is the diagrammatic top view of the above-mentioned regenerative-combustion heat treat furnace of this embodiment.
Fig. 3 represents to carry out combustion event by a heat-storage type burner in a pair of heat-storage type burner in this embodiment, and is carried out the schematic illustration of the state of accumulation of heat action by another heat-storage type burner.
Fig. 4 is illustrated in each in this embodiment to switching the sequential chart of combustion event and accumulation of heat action in each heat-storage type burner of heat-storage type burner.
(symbol description)
1 processed material
2 step rates (Japanese: ウ オ one キ Application グ PVC one system)
10 regenerative-combustion heat treat furnaces
11 inlets
12 outlets
20,20a, 20b heat-storage type burner
21,21a, 21b burning portion
22,22a, 22b regenerator
23a, 23b accumulation of heat material
24a, 24b air supply pipe
25a, 25b air are supplied with and are used valve
26a, 26b exhaust emission tube
27a, 27b waste gas are discharged and are used valve
28a, 28b fuel gas supply pipe
29a, 29b air supply valve
30 fuel gas feeding devices
The specific embodiment
Below, be specifically described based on the method for controlling combustion of accompanying drawing the regenerative-combustion heat treat furnace of embodiment of the present invention.In addition, the method for controlling combustion of regenerative-combustion heat treat furnace of the present invention is not limited to the method shown in the following embodiment, can suitably change in the scope of the main points that do not change invention and be implemented.
At this, in the present embodiment, as shown in Figure 1, to guide to the processed material of making by steel 1 in the regenerative-combustion heat treat furnace 10 from the inlet 11 of regenerative-combustion heat treat furnace 10, utilize step rate 2 in regenerative-combustion heat treat furnace 10, to transport, it is heat-treated, will be taken out from regenerative-combustion heat treat furnace 10 via the outlet 12 of regenerative-combustion heat treat furnace 10 by heat treated processed material 1 like this.
In addition, in the present embodiment, as shown in Figure 2, in above-mentioned regenerative-combustion heat treat furnace 10, make a pair of heat-storage type burner 20 relatively four pairs of heat-storage type burners 20 are set on regenerative-combustion heat treat furnace 10, and the burning portion 21 from 30 pairs of each heat-storage type burners 20 of fuel gas feeding device of the fuel gas of supplying with fixed amount supply with fuel gas along the moving direction of above-mentioned processed material 1 with burning portion 21 and regenerator 22.
At this, in above-mentioned a pair of heat-storage type burner 20, as shown in Figure 3, to be arranged at the air that the regenerator 22a that contains accumulation of heat material 23a is supplied with the air supply pipe 24a of combustion air in a heat-storage type burner 20a supplies with and opens with valve 25a, discharge and close and will be arranged at the gas of discharging the exhaust emission tube 26a of burnt gas with valve 27a via regenerator 22a, utilization is housed in the accumulation of heat material 23a in this regenerator 22a, and the combustion air that guides in the regenerator 22a via above-mentioned air supply pipe 24a is heated.
In addition, carry out following combustion event: will be supplied to the burning 21a of portion through the combustion air after such heating, and open the air supply valve 29a that fuel gas is guided to the fuel gas supply pipe 28a that is located at this burning portion 21a center, spray next fuel gas from this fuel gas supply pipe 28a, and make this fuel gas in regenerative-combustion heat treat furnace 10 internal combustion by above-mentioned fuel gas feeding device 30 supplies.
On the other hand, in another heat-storage type burner 20b, to supply with the air of being located at air supply pipe 24b to the air supply valve 29b of fuel gas supply pipe 28b supply fuel gas and close with valve 25b, do not burn, discharge and open with valve 27b and will be located at the gas of discharging the exhaust emission tube 26b of burnt gas via regenerator 22b.
Then, carry out following accumulation of heat action: the burnt gas after regenerative-combustion heat treat furnace 10 internal combustion guides to regenerator 22b as mentioned above, the heat storage that makes burnt gas makes this burnt gas be expelled to the outside via above-mentioned exhaust emission tube 26b to the accumulation of heat material 23b that is contained in this regenerator 22b afterwards.
In addition, in above-mentioned a pair of heat- storage type burner 20a, 20b, alternately switch and carry out above-mentioned combustion event and accumulation of heat action.
In addition, each to heat-storage type burner 20 in, alternately switch at each as mentioned above and carry out above-mentioned combustion event and accumulation of heat action, and make each different the moment of switching combustion event and accumulation of heat action in the heat-storage type burner 20 to heat- storage type burner 20a, 20b.
Then, based on sequential chart shown in Figure 4, to above-mentioned each to switching each in the heat-storage type burner 20 combustion event among heat-storage type burner 20a, the 20b and accumulation of heat action are described.
At this, when switching combustion event and accumulation of heat action, in carrying out the heat-storage type burner 20a of combustion event, begin to close the air that is in open mode and supply with the operation of using valve 25a and air supply valve 29a, be supplied to the amount of the combustion air of the 21a of burning portion to reduce at leisure via regenerator 22a, and reduce at leisure from the amount of the fuel gas of fuel gas supply pipe 28a injection from air supply pipe 24a.
Then, closing air supplies with valve 25a and air supply valve 29a, when feasible burning stops not resupplying combustion air and fuel gas, open the gas discharge valve 27a that is in closed condition, and in the heat storage of the burnt gas that will guide to regenerator 22a to the accumulation of heat material 23a that is contained in this regenerator 22a, make this burnt gas be expelled to the outside via above-mentioned exhaust emission tube 26a.
On the other hand, in the heat-storage type burner 20b that carries out the accumulation of heat action, close the gas discharge valve 27b that is in open mode, after stopping burnt gas being expelled to the action of outside via exhaust emission tube 26b, the operation of supplying with valve 25a and air supply valve 29a with the air that begins to close among the above-mentioned heat-storage type burner 20a synchronously begins to open the operation that valve 25b and air supply valve 29b are used in the air supply that is in closed condition, increase the amount that is supplied to the combustion air of the 21b of burning portion from air supply pipe 24b via regenerator 22b at leisure, and increase the amount of the fuel gas that sprays from fuel gas supply pipe 28b at leisure, burn beginning.
At this, because the on-off action that above-mentioned each air is supplied with valve 25a, 25b and each air supply valve 29a, 29b needs the several seconds usually, therefore, need to carry out following control between this: the combustion air among the reduction that makes combustion air among the heat-storage type burner 20a that carries out combustion event and fuel gas and the heat-storage type burner 20b that carries out the accumulation of heat action and the recruitment of fuel gas equate all the time.In addition, in the present embodiment, as shown in Figure 4, begin to close an air simultaneously and supply with, and make above-mentioned action carry out the identical time with the action of valve 25a and air supply valve 29a and the action of opening another air supply usefulness valve 25b and air supply valve 29b.
At this, in this a pair of heat- storage type burner 20a, 20b, make the constant dosage of the quantity delivered of the fuel gas integral body of coming next combustion air integral body as mentioned above with supplying with from air supply pipe 24a, 24b from each fuel gas supply pipe 28a, 28b supply, thus the fuel gas and the combustion air of supply fixed amount.
Like this, when the combustion event of switching a pair of heat- storage type burner 20a, 20b and accumulation of heat action, also can make amount and the amount of combustion air and their fixed ratio of the fuel gas that is supplied to regenerative-combustion heat treat furnace 10, thereby can stably carry out suitable burning.
In addition, in regenerative-combustion heat treat furnace 10, be provided with many as mentioned above to heat-storage type burner 20, and fuel gas is supplied to each to each the fuel gas supply pipe 28a the heat-storage type burner 20 from the fuel gas feeding device 30 of the fuel gas of supplying with fixed amount, under the situation of 28b, switching a pair of heat-storage type burner 20a as mentioned above, when combustion event among the 20b and accumulation of heat action, if at this a pair of heat- storage type burner 20a, 20b makes on the whole from fuel gas supply pipe 28a, 28b supplies with and the constant dosage of the fuel gas that comes, then also can not make from above-mentioned fuel gas feeding device 30 and be supplied to each fuel gas supply pipe 28a other the heat-storage type burner 20, the quantitative changeization of the fuel gas of 28b.
Therefore, when combustion event in switching a pair of heat- storage type burner 20a, 20b and accumulation of heat action, in other heat-storage type burner 20, the situation that the ratio increase of fuel gas and combustion air can not occur and fired state is changed, use at fuel gas under the situation of propane flammable gas etc. of flammability difference, can be not as before, black smoke (coal) do not cause problem on the environment thus because of appearring in imperfect combustion yet, or can't suitably heat-treat, thereby can stably carry out suitable burning because of coal is attached on the processed material.
In addition, if closing air as mentioned above in carrying out the heat-storage type burner 20a of combustion event supplies with valve 25a and air supply valve 29a, and when burning is stopped, open the gas that is in closed condition and discharge and to use valve 27a, then can prevent from not enter regenerator 22a but discharge via exhaust emission tube 26a by bypass from the part that air supply pipe 24a guides to the combustion air of regenerator 22a.
In addition, in the heat-storage type burner 20b that carries out the accumulation of heat action, if as mentioned above after closing the gas discharge usefulness valve 27b that is in open mode, open the air that is in closed condition and supply with, then can prevent from not enter regenerator 22b and discharge via exhaust emission tube 26b by bypass from the part that air supply pipe 24b guides to the combustion air of regenerator 22b with valve 25b and air supply valve 29b.
Consequently, prevent to be supplied to the minimizing of the ratio of the combustion air in the regenerative-combustion heat treat furnace 10, and make the fuel gas that is supplied in the regenerative-combustion heat treat furnace 10 and the ratio of combustion air be in more fixing state, thereby can more stably carry out suitable burning.
Claims (4)
1. the method for controlling combustion of a regenerative-combustion heat treat furnace, wherein, described regenerative-combustion heat treat furnace is provided with at least one pair of heat-storage type burner, and described a pair of heat-storage type burner has: the burning portion that comprises the fuel gas supply pipe; Contain the regenerator of accumulation of heat material; Combustion air is supplied to the air supply pipe of regenerator; And with the exhaust emission tube of burnt gas from the regenerator discharge, in a heat-storage type burner, combustion air is guided to burning portion from air supply pipe via regenerator, and carry out combustion event from the fuel gas supply pipe inspection fuel gas of this burning portion, and in another heat-storage type burner, carry out burnt gas being guided to described regenerator and the heat storage of burnt gas being moved the accumulation of heat that burnt gas is discharged from exhaust emission tube to the accumulation of heat material, alternately switch described combustion event and the accumulation of heat action carried out in this a pair of heat-storage type burner, the method for controlling combustion of described regenerative-combustion heat treat furnace is characterised in that, when combustion event in switching described a pair of heat-storage type burner and accumulation of heat action, in the heat-storage type burner in being in combustion event, make the quantity delivered of the fuel gas in the fuel gas supply pipe and the quantity delivered of the combustion air in the air supply pipe begin to reduce from the normal combustion state, and in the heat-storage type burner in being in the accumulation of heat action, make the quantity delivered of the fuel gas in the fuel gas supply pipe and the quantity delivered of the combustion air in the air supply pipe begin to increase from halted state, and in described a pair of heat-storage type burner, the quantity delivered of the quantity delivered of the fuel gas that comes from the supply of fuel gas supply pipe next combustion air with supplying with from air supply pipe is fixed.
2. the method for controlling combustion of regenerative-combustion heat treat furnace as claimed in claim 1, it is characterized in that, in described regenerative-combustion heat treat furnace, be provided with manyly, make the moment of switching combustion event and accumulation of heat action different to heat-storage type burner at each to heat-storage type burner.
3. the method for controlling combustion of regenerative-combustion heat treat furnace as claimed in claim 1 or 2, it is characterized in that, fuel gas is supplied to fuel gas supply pipe described each heat-storage type burner from the fuel gas feeding device of the fuel gas of supplying with fixed amount.
4. the method for controlling combustion of regenerative-combustion heat treat furnace as claimed in claim 1 or 2, it is characterized in that, when combustion event in switching a pair of heat-storage type burner and accumulation of heat action, in the heat-storage type burner in being in combustion event, after the supply of the fuel gas in having stopped the fuel gas supply pipe and the supply of the combustion air in the air supply pipe burnt gas is discharged from exhaust emission tube, and in the heat-storage type burner in being in the accumulation of heat action, stopping with burnt gas after the operation that exhaust emission tube is discharged the supply of the fuel gas in the beginning fuel gas supply pipe and the supply of the combustion air in the air supply pipe.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010127569A JP5404532B2 (en) | 2010-06-03 | 2010-06-03 | Combustion control method of heat storage combustion type heat treatment furnace |
| JP2010-127569 | 2010-06-03 |
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| CN102269518A true CN102269518A (en) | 2011-12-07 |
| CN102269518B CN102269518B (en) | 2014-10-15 |
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| CN201110150831.3A Expired - Fee Related CN102269518B (en) | 2010-06-03 | 2011-05-25 | Combustion control method of regenerative-combustion heat treatment furnace |
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| Country | Link |
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| JP (1) | JP5404532B2 (en) |
| KR (1) | KR101430790B1 (en) |
| CN (1) | CN102269518B (en) |
| TW (1) | TWI447331B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456569A (en) * | 2013-09-24 | 2015-03-25 | 湖南巴陵炉窑节能股份有限公司 | Progressive switchover heat storage type combustion device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697328B (en) * | 2015-03-16 | 2017-03-22 | 中国科学院广州能源研究所 | Novel efficient energy-saving heat accumulating type ceramic roller kiln |
| JP6545739B2 (en) | 2017-03-03 | 2019-07-17 | 中外炉工業株式会社 | Heat storage burner system |
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| JP2001082736A (en) * | 1999-09-16 | 2001-03-30 | Daido Steel Co Ltd | Regenerative burner combustor |
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2011
- 2011-05-06 TW TW100115903A patent/TWI447331B/en active
- 2011-05-25 CN CN201110150831.3A patent/CN102269518B/en not_active Expired - Fee Related
- 2011-05-31 KR KR1020110052028A patent/KR101430790B1/en active IP Right Grant
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| JPH07278683A (en) * | 1994-04-02 | 1995-10-24 | Nippon Steel Corp | Temperature control method of batchwise heat treating furnace |
| JPH1047664A (en) * | 1996-07-30 | 1998-02-20 | Kawasaki Steel Corp | Furnace temperature control method for continuous heating furnace |
| JP2000240939A (en) * | 1999-02-22 | 2000-09-08 | Tokyo Gas Co Ltd | On-off control of burner in combustion equipment |
| JP2006250472A (en) * | 2005-03-11 | 2006-09-21 | Nippon Steel Corp | Heat storage combustion burner control method |
| JP2006349281A (en) * | 2005-06-17 | 2006-12-28 | Sumitomo Metal Ind Ltd | Continuous heating furnace and method for controlling its combustion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104456569A (en) * | 2013-09-24 | 2015-03-25 | 湖南巴陵炉窑节能股份有限公司 | Progressive switchover heat storage type combustion device |
| CN104457302A (en) * | 2013-09-24 | 2015-03-25 | 湖南巴陵炉窑节能股份有限公司 | Regenerative combustion device |
| WO2015043295A1 (en) * | 2013-09-24 | 2015-04-02 | 湖南巴陵炉窑节能股份有限公司 | Alternate-switching regenerative combustion apparatus and control method therefor |
| WO2015043296A1 (en) * | 2013-09-24 | 2015-04-02 | 湖南巴陵炉窑节能股份有限公司 | Progressive-switching regenerative combustion apparatus and control method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI447331B (en) | 2014-08-01 |
| TW201200810A (en) | 2012-01-01 |
| KR101430790B1 (en) | 2014-08-18 |
| JP2011252669A (en) | 2011-12-15 |
| JP5404532B2 (en) | 2014-02-05 |
| CN102269518B (en) | 2014-10-15 |
| KR20110132985A (en) | 2011-12-09 |
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