WO2016070977A1 - Method for operating a regenerative burner system, and regenerative burner system - Google Patents

Method for operating a regenerative burner system, and regenerative burner system Download PDF

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Publication number
WO2016070977A1
WO2016070977A1 PCT/EP2015/002168 EP2015002168W WO2016070977A1 WO 2016070977 A1 WO2016070977 A1 WO 2016070977A1 EP 2015002168 W EP2015002168 W EP 2015002168W WO 2016070977 A1 WO2016070977 A1 WO 2016070977A1
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WO
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Patent type
Prior art keywords
gas
combustion
oxygen
mode
line section
Prior art date
Application number
PCT/EP2015/002168
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German (de)
French (fr)
Inventor
Martin Schöninger
Original Assignee
Linde Aktiengesellschaft
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING 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
    • F23L15/00Heating of air supplied for combustion
    • F23L15/02Arrangements of regenerators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/66Preheating the combustion air or gas
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2202/00Fluegas recirculation
    • F23C2202/30Premixing fluegas with combustion air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2205/00Pulsating combustion
    • F23C2205/10Pulsating combustion with pulsating fuel supply
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2205/00Pulsating combustion
    • F23C2205/20Pulsating combustion with pulsating oxidant supply
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/30Technologies for a more efficient combustion or heat usage
    • Y02E20/34Indirect CO2 mitigation, i.e. by acting on non CO2 directly related matters of the process, e.g. more efficient use of fuels
    • Y02E20/344Oxyfuel combustion
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/30Technologies for a more efficient combustion or heat usage
    • Y02E20/34Indirect CO2 mitigation, i.e. by acting on non CO2 directly related matters of the process, e.g. more efficient use of fuels
    • Y02E20/348Air pre-heating

Abstract

The present invention relates to a method for operating a regenerative burner system (100) having a number of regenerative burners (110, 120) which each comprise a bidirectionally operable line section (113, 123) and which are operated alternately in a first operating mode and in a second operating mode, wherein, in the first operating mode, a fuel (132) is burned in a combustion chamber (101) with a combustion assistance gas (131), the latter being fed partially via the bidirectionally operable line section (113, 123), such that a combustion gas (141) is obtained, and in the second operating mode, the combustion exhaust gas (141) is discharged out of the combustion chamber (101) via the bidirectionally operable line section (113, 123), wherein, at the start of the first operating mode, as combustion assistance gas, use is made of a residual amount of the combustion exhaust gas (141) which is present in the respective bidirectionally operable line section (113, 123) after the second operating mode, and of at least one oxygen-rich auxiliary gas.

Description

description

A method of operating a Reqenerativbrennersvstems and

Regenerativbrennersvstem

The invention relates to a method of operating a regenerative burner system having a plurality of regenerative burners, each comprising a bidirectionally operable line section and are alternately operated in a first operating mode and a second mode of operation, wherein in the first mode of operation, a fuel supplied to a via the bidirectionally operable line section combustion support gas is combusted to yield a combustion exhaust gas in a combustion chamber, and in the second operating mode, the

Combustion exhaust gas is discharged through the bidirectionally operable line section from the combustion chamber.

State of the art

In regenerative burner systems, a combustion can with an

Energy recovery are performed. Regenerative burner systems may comprise a number of regenerative burners which are alternately operated in a first and a second operating mode. In a number of first

Regenerative burner which is operated in the first operation mode, a

Combustion are carried out in a combustion chamber. In this case, fuel can be combusted under supply of a combustion support gas into the combustion chamber. At the same time, a combustion exhaust gas this may in a second number of regenerative burners, which is operated in the second mode of operation

Combustion are discharged from the combustion chamber.

In most cases, each of the regenerative burner a common supply and discharge line for the combustion support gas or the combustion exhaust gas in the form of a line section of a gas conduit to herein as "bidirectionally operable

designated lead portion "on. Depending on the mode of operation may thus either supplied to the combustion support gas for combustion or the combustion exhaust gas are discharged to the respective regenerative burners on this bidirectionally operable conduit portion. The fuel is supplied in the usually via one or more separate conduits.

After changing from the second to the first operating mode, a so-called rinsing phase is carried out at the beginning of the first operation mode usually. As part of this purge phase is a residual amount of combustion exhaust gas which bidirectionally operable after the second operation mode even in the respective

Line section is first removed from it. In this case, the

corresponding bidirectionally operable conduit section be rinsed, for example with air.

During this flushing phase of the respective regenerative burner can usually not be used for combustion. Only when the remaining amount of

operated bidirectionally combustion exhaust gas completely out of the

Line section has been removed, combustion support gas is supplied via the line bidirectionally operable portion again, and the corresponding regenerative burner is fired. This is time consuming and leads to inhomogeneities in the heat output of a respective regenerative burner system. Furthermore, to be operated by the flushing of the bidirectional

Line section with air an undesirably high oxygen content in the

Combustion exhaust gas arising in the course of subsequent combustion. Although the best possible oxygen content in the exhaust gas of about 2% can be set before changing the operating modes. Immediately after the rinsing phase, the

Oxygen content in the exhaust gas may amount to approximately 12%.

It is therefore desirable to provide an improved way of operating a regenerative burner system. Disclosure of the Invention

According to the invention a method of operating a

proposed regenerative burner system and a corresponding regenerative burner system having the features of the independent claims. Advantageous embodiments result from the respective dependent claims and the following description.

The regenerative burner system comprises a number of regenerative burners, each comprising a bidirectionally operable line section and are alternately operated in a first operating mode and a second mode of operation. In the first operating mode, a combustion support gas is at least partly supplied through the line bidirectionally operable portion and supplied with a likewise, for example, via one or separate lines, fuel is burned in a combustion chamber to obtain a combustion exhaust gas. In the second operating mode, the combustion exhaust gas is discharged via the bidirectionally operable line section from the combustion chamber. As a fuel, natural gas can be used for example. As combustion support gas air can for example be supplied.

A first number of the regenerative burner is operated in the first operating mode while a second number of the regenerative burner is operated in the second operation mode. After given time intervals, a change of the operation modes is performed in each case. After this change, the first number of the regenerative burner is thus operated in the second operation mode, the second number in the first operation mode. Such a change of

Operating modes is in particular carried out after constant time intervals, for example in each case after a time interval between 30 s and 120 s. in particular, the regenerative burner system includes a gas supply for supplying the combustion support gas and if necessary of the fuel. The gas supply can, for example, separate lines, which typically open directly into the corresponding burner, with the fuel on the one hand and the

pressurize combustion support gas on the other. More particularly, the regenerative burner system, a gas discharge for discharging the

Combustion exhaust gas over the bidirectionally operable line section.

The respective portions are operated bidirectionally line thus in particular formed as a common feed and discharge lines and further to the gas supply and the gas removal in particular, respectively. Depending on the operating mode can be fed to the respective regenerative burners to the respective line section bidirectionally operable either the fuel for the combustion or the combustion exhaust gas are discharged from the combustion chamber. Upstream of the respective operated bidirectionally line sections of the

different regenerative burner is disposed in each case in particular, a convenient switching element, for example a flap or a valve. On

corresponding switching element may comprise a plurality of such flaps or valves. By properly, ie in particular synchronized with the aforementioned modes of operation, switching and actuation of this switching element may be between the supply of the combustion support gas and the discharge of the

Combustion exhaust gas to the respective operated bidirectionally line section to be changed by being selectively connected to the gas supply or gas discharge. Thus it can be changed between the first and the second operating mode of the respective regenerative burner.

Corresponding switching elements may be provided in synchronism with the switching elements for in one or more lines for the fuel

Combustion support gas or the combustion exhaust gas to be operated. The bidirectionally operable line section is in particular a section of a

Gas line between said switching element and the respective regenerative burner itself or its terminal end.

According to the invention at the beginning of the first operating mode and

Combustion supporting gas, instead of a separately supplied

Combustion support gas such as air, a residual amount of

Combustion exhaust gas, which is present after the second operation mode to the respective operated bidirectionally line section, and at least one

oxygenated additive gas. To this end, the

Regenerative burner system an additional gas supply for supplying the

Additional oxygen-rich gas. This auxiliary gas is mixed with the remaining amount of the combustion exhaust gas, which is present after the second operation mode to the respective operated bidirectionally line section, and therefore has a sufficient for the combustion or specifically set oxygen content. The additional gas is in particular an area (immediately) prior to the respective regenerative burner, that is upstream of the particular regenerative burner is supplied. Next particular additive gas is at least partially fed into the bidirectionally operable conduit portion. Thus, the gas can with the remaining amount of the combustion exhaust gas in the operated bidirectionally

mix line section. However, a supply is also downstream of a

corresponding regenerative burner, ie in the combustion chamber, but in the immediate vicinity of the burner is possible. Advantages of the Invention

By the invention it is no longer necessary to carry out a washing phase at the beginning of the first operating mode. The invention also makes it possible and immediately at the beginning of the first mode of combustion in the respective

perform regenerative burners. It does not have to wait so until the

Residual quantity of the combustion exhaust gas is removed completely from the bidirectionally operable line section to the respective regenerative burner a

perform combustion. Instead, the remaining amount of

Combustion exhaust gas itself be used in the respective

perform regenerative burner combustion. In particular, in the respective regenerative burner can be started with the combustion already when the corresponding switching element is driven in the respective gas line.

This results in a particularly homogeneous heat output. By the oxygen-rich additive gas physical and / or chemical properties of the residual amount of combustion exhaust gas can be changed or influenced specifically. In particular, the properties of the residual quantity of the combustion exhaust gas through the supplementary gas are changed such that the remaining quantity of combustion exhaust gas suitable for combustion, and that the

corresponding combustion support gas to support combustion of the fuel.

The combustion with the remaining amount of the combustion exhaust gas and the additive gas, the oxygen content can be influenced in the combustion exhaust gas or adjusted in particular, which is generated in the course of this first mode of operation by the respective regenerative burner in the combustion chamber. This amount of oxygen can be kept very evenly over the entire first operation mode in particular, without causing tips of the oxygen fraction at its beginning (because of an air bleed). Furthermore, the

Oxygen content as low as possible, in particular at about 2%.

The invention provides a power increase of the regenerative burner system overall can be achieved and the energy efficiency can be increased. Furthermore, a slight increase of a proportion of carbon dioxide in the

Combustion exhaust gas can be achieved during the first operating mode.

Advantageously, the additional oxygen-rich gas is at the end of the second

fed operation mode of the remaining amount of the combustion exhaust gas. The

Additional oxygen-rich gas is thus supplied, during the bidirectionally operable pipe section is still flows through the combustion exhaust gas. In particular, the additional oxygen-rich gas is directly supplied to or at least partly in the bidirectionally operable conduit portion. The

Combustion exhaust gas and the oxygen-rich additive gas can thereby mix over the entire length of the bidirectionally operable pipe section to which suitable switching element which is arranged upstream of the bidirectionally operable line section.

When switching between the second and wherein the switching element is switched according to the first mode of operation, the volume flow comes from

Combustion exhaust gas and oxygenated additive gas to a halt. Characterized combustion exhaust gas and oxygen-rich additive gas are again mixed together. At the beginning of the subsequent first mode mix

Combustion exhaust gas and oxygen-rich additive gas again in the bidirectionally operable pipe section between the switching element and the burner. In this way, a homogeneous, best possible mix of combustion exhaust gas and the oxygen-rich additive gas can be achieved.

Alternatively or additionally, the oxygen-rich additive gas is fed advantageously to the beginning of the first operating mode, the remaining amount of the combustion exhaust gas. If the additive gas is supplied only at the start of the first operation mode, a predetermined time interval may in particular be awaited before the corresponding burner is fired with the mixture of combustion exhaust gas and additional gas. Thus, in particular, can be guaranteed that the combustion exhaust gas and the oxygen-rich additional gas mix homogeneous and best possible way.

Preferably, in the further course of the first mode of operation is as

Combustion support gas back the externally supplied

Combustion support gas, such as air, used when no

Remaining amount of the combustion exhaust gas in the respective operated bidirectionally line section is no longer present. When the oxygen-rich additional gas is supplied at the beginning of the first mode of operation, the supply of the additional gas is in particular completed at this time. The fuel is then, for example with clean air, which is supplied as combustion support gas via the bidirectionally operable line portion by the corresponding

Regenerative burners burned in the combustion chamber. the corresponding

Regenerative burner is regularly fired according to the first mode of operation.

Preferably, in the present invention, pure oxygen, oxygen-enriched air, or so-called "impurity oxygen is' from a

supplied air separation plant as an additional gas. By "pure oxygen" is oxygen having a purity of preferably at least 90% or 99% in this connection, more preferably more preferably understood by at least 99.5%, with a maximum impurity of 1 ppm. Oxygen-enriched air or impurity oxygen, for example, has an oxygen content from 50% to 90%. the remaining amount of the combustion exhaust gas may thus be enriched for the combustion by the respective regenerative burner. the additive gas is preferably supplied via an oxygen lance. the auxiliary gas supply comprises, for this purpose preferably at least one oxygen lance.

Advantageously, an oxygen content of the combustion support gas is adjusted to a predetermined value by the oxygen-rich additive gas. Through this oxygen content the combustion of the residual amount of the can

Combustion exhaust gas infiuenced or adjusted. Furthermore, thus the oxygen content in the combustion exhaust gas can be infiuenced or adjusted, which is generated during the combustion by the respective regenerative burner in the combustion chamber. Preferably, the oxygen content of the is

Combustion supporting gas is set to a value between 15% and 25%, more preferably in particular to a value between 20% and 22%, preferably to a value of substantially 20.9%.

Preferably, in the bidirectionally operable line section

Heat storage elements or Regeneratorelemente arranged, for example Regeneratorkugeln. Such heat storage elements (SiC) may be made for example of alumina (Al 2 0 3) or silicon carbide. by such

Heat storage elements can be carried out with energy recovery in the regenerative burner system including a combustion.

Is discharged in the second mode of combustion exhaust gas via the bidirectionally operable line section, the heat storage elements are preferably heated by the combustion exhaust gas led out or by the thermal energy of the combustion exhaust gas. Preference is given to the

Combustion support gas in the first operating mode by these

heated heat storage elements in the operated bidirectionally

Line section heated. The heated heat storage elements provide thermal energy to the combustion support gas. Thus, the combustion support gas can be preheated for combustion.

The invention further relates to a regenerative burner system having a plurality of regenerative burners. Embodiments of this invention

Regenerative burner resulting from the above description of the

Method of the invention in an analogous manner.

figure description

The invention and its advantages are further illustrated by the accompanying drawings. In this schematically illustrates a preferred embodiment of a regenerative burner system according to the invention and Figure 2 shows schematically a preferred embodiment of a method according to the invention as a block diagram. In Figure 1, a preferred embodiment of an inventive

regenerative burner system shown schematically and designated by 100.

The regenerative burner system has two regenerative burners 1 10 and 120, which are arranged on a combustion chamber of the one hundred and first The regenerative burners 110 and 120 are each connected to a gas line 111 and the 121st

Vör the regenerative burners 1 11 1 10 and 120 and 121, each heat storage elements 1 14 and 124, disposed, for example Regeneratorkugeln of alumina (Al 2 0 3) in the respective gas line.

In the gas lines 111 and 121 here designed as a flap switching element 1 is located 12 and 122, respectively. A portion of the respective gas pipe 1 11 and 121 between the respective valve 112 or 122 and the respective

Regenerative burners 110 and 120 is operable as a bi-directional line section 113 or 123 of the respective gas pipe 1 1 1 and 121 respectively formed.

The gas lines 111 and 121 are respectively connected to a gas supply 130 and connected to a gas discharge 140th When the respective valve is switched to a first position 112 or 122, the respective regenerative burners 110 and 120 through the gas feed 130 during a first mode of operation, for example, air as the

Combustion support gas 131 supplied through the respective gas line 111 and the 121st In addition, the respective regenerative burner is supplied 110 and 120 via a separate fuel conduit, or a separate fuel lance 170 or 180 in the first mode of natural gas as fuel 132nd

In the first mode of combustion of the mixture of natural gas 132 and 131 for example, air in the combustion chamber 101 is performed by the respective regenerative burners 110 and 120 respectively. In the combustion chamber 101 thereby produces a combustion exhaust gas 141. This combustion exhaust gas 141 is in the course of a second mode of operation through the gas outlet 140 via the respective gas pipe 1 11 and 121, and thus the operated bidirectionally line sections 113 and 123, respectively discharged from the combustion chamber 101 when the flap is connected in a second position 1 12 or 122nd

In Figure 1, the regenerative burner 110 is shown in the first operation mode and the regenerative burner 120 in the second operation mode.

The regenerative burner system 100 also includes an additional gas supply 160th This additional gas supply 160 includes two oxygen lances 161 and 162, respectively, which are arranged on the operated bidirectionally line sections 113 and 123rd About this oxygen lances 161 and 162 each an oxygen-rich gas can be fed into the respective operated bidirectionally line section 113 and 123rd In particular, pure oxygen having a purity of at least 99.5% is fed as such an oxygen-rich additive gas. As mentioned, appropriate oxygen lances can also into the combustion chamber 101, however, in

immediate vicinity of the regenerative burner 110 and 120, respectively, terminate.

The regenerative burner system 100 further includes a control unit 150 which is adapted to carry out a preferred embodiment of a method according to the invention. This preferred embodiment is schematically illustrated in Figure 2 as a block diagram.

In a step 201, the regenerative burner 110 is operated in the first mode of operation and the regenerative burner 120 in the second operation mode, as shown in FIG. 1

In a step 202, the second operating mode is at the end of

Regenerative burner 120 shortly by the auxiliary gas supply 160 through the oxygen lance 162 pure oxygen or other oxygen-rich gas, subsequently

"Oxygen ', fed into the bidirectionally operable line section 123rd

Subsequently, a change of the operation modes is performed. The feeding of oxygen is stopped, the regenerative burner 110 is now operated in the second mode of operation and the regenerative burner in the first 120

Operation mode. To this end, the flap 112 is switched from the first to the second position and the flap 122 from the second position to the first. In the bidirectionally operable line section 123 of the gas line 121 is after

Switching the position of the flap 122 a residual amount of the

Combustion exhaust gas 141 and the injected oxygen before.

This residual amount of the combustion exhaust gas 141 and the injected oxygen are supplied in step 203 at the beginning of the first mode of operation of the regenerative burner 120 through the line bidirectionally operable portion 123 of the gas line 121 in the direction of the regenerative burner 120th This fed fed oxygen and the remainder of the combustion exhaust gas 141 are as

used combustion support gas and burned at the beginning of the first operation mode from the regenerative burner 120th Supplied by the injected oxygen, a proportion of oxygen, this combustion support gas is adjusted to a predetermined value, for example to 20.9%.

In a step 204, any remaining amount of the combustion exhaust gas 141 is in the operated bidirectionally line portion 123 of the gas line before 121 more. In step 204, the first mode of operation gas 132 and air 131 are combusted by the regenerative burner 120 in the further course.

After a predetermined time interval of for example 30 s after the change of operation modes in accordance with step 202, a change of the operation modes is performed in step 205 again. Before this change in the second mode of operation of the regenerative burner 110 through the auxiliary gas supply 160 through the oxygen lance 161 oxygen in the bidirectionally operable line section 113 is supplied in step 205, first at the end. Subsequently, the flap is 1 12 switched back to the first position, the flap 122 back into the second position and the oxygen lance 161 is supplied to no more oxygen. The regenerative burner 110 is now back in the first

operate mode of operation and the regenerative burner 120 again in the second operating mode.

According to this switching of the first mode of operation of the regenerative burner 110 is located in step 206 at the beginning now in the bidirectionally operable conduit section 1 13 of the gas line 111, a residual quantity of the combustion exhaust gas 141 and the injected oxygen before.

This residual amount of the combustion exhaust gas 141 and the oxygen are supplied in step 206 at the beginning of the first mode of operation of the regenerative burner 110 through the bidirectionally operable conduit section 1 13 of the gas conduit 1 11 in the direction of the regenerative burner 110th This added oxygen fed and the residual amount of the combustion exhaust gas 141 can be used as combustion support gas and burned at the beginning of the first operation mode from the regenerative burner 1 10th Also in this case, an oxygen content of this combustion support gas is adjusted to 20.9% by the fed fed oxygen.

Once no residual quantity of the combustion exhaust gas 141 is present 111 more in the bidirectionally operable conduit section 1 13 of the gas line, step is performed again 101 and later in the first mode of operation gas 132 and air are combusted 131 from the regenerative burner 1 10th

After the predetermined time interval of 30 s after the change of operation modes in accordance with step 205 of the change of operation modes in accordance with step 202 is performed again.

LIST OF REFERENCES

100 regenerative burner system

101 combustion chamber

110 regenerative burners

111 gas line

1 12 flap switching element

1 13 bidirectionally operable line section

1 14 heat storage elements

120 regenerative burner

121 gas line

122 flap, switching element

123 bi-directionally operable line section

124 heat storage elements

130 gas supply

131 air combustion support gas

132 natural gas, fuel

140 gas discharge

141 combustion flue gas

150 Butterfly

160 additional gas supply

161 oxygen lance

162 oxygen lance

170 fuel line, fuel lance

180 fuel line, fuel lance

201 method step

202 step

203 method step

204 method step

205 step

206 method step

Claims

claims
A method of operating a regenerative burner system (100) having a plurality of regenerative burners (1 10, 120), each comprising a bidirectionally operable line section (1 13, 123) and are operated alternately in a first and a second operating mode, wherein the first in the
Mode of operation, a fuel (132) with an at least partly over the bi-directionally operable line section (113, 123) supplied
Combustion support gas (131) to obtain a combustion exhaust gas (141) in a combustion chamber (101) is combusted, and second in the
Mode of operation, the combustion exhaust gas (141) over the bi-directionally operable line section (113, 123) from the combustion chamber (101) discharged is (201, 204), characterized in that at the beginning of the first operating mode and combustion support gas, a residual quantity of the combustion exhaust gas (141) after the second
Operation mode in the respective operated bidirectionally line section (113, 123) is present, and at least one oxygen-rich additive gas are used (203, 206).
The method of claim 1, wherein the oxygen-rich gas addition at the beginning of the first operating mode and / or at the end of the second mode of operation
Remaining amount of the combustion exhaust gas is fed (202, 205).
The method of claim 1 or 2, wherein in the further course of the first
Mode of operation is used as combustion support gas (131) air when no residual quantity of the combustion exhaust gas in the respective operated bidirectionally line section (113, 123) longer present (201 204).
The method of claim any of the preceding claims, wherein pure oxygen or oxygen-enriched air is used as oxygen-rich additive gas (202, 205).
5. The method of claim 4, wherein the pure oxygen or oxygen-enriched air with an oxygen lance (161, 162) is fed (202, 205). 6. The method according to any one of the preceding claims, wherein by the
Additional oxygen-rich gas, an oxygen content of
Combustion support gas is adjusted to a predetermined value.
7. The method of claim 6, wherein the oxygen content of the
Combustion support gas is adjusted to a value between 15% and 25%, in particular to a value between 20% and 22%, more in particular to a value of substantially 20.9%.
8. The method according to any one of the preceding claims, wherein the second in
Mode of operation, heat storage elements (114, 124) in the bidirectionally operable line section (1 13, 123) by being conducted
Combustion exhaust gas (141) to be heated.
9. The method of claim 8, wherein in the first operating mode the fuel (132) and / or at least a part of the combustion support gas (131) through the heated heat storage elements (1 14, 124) in the bidirectionally operable line section (113, 123) are heated ,
10. regenerative burner system (100) having a plurality of regenerative burners (110, 120),
characterized, in that
the regenerative burner system (100) comprises an auxiliary gas supply (160) for supplying an oxygen-rich additive gas and a control unit (150) which is adapted to perform a method according to any one of the preceding claims carried out.
11. regenerative burner (100) according to claim 10, wherein the additional gas supply (160) at least one oxygen lance comprises (161, 162).
PCT/EP2015/002168 2014-11-03 2015-10-29 Method for operating a regenerative burner system, and regenerative burner system WO2016070977A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE102014016090.4 2014-11-03
DE201410016090 DE102014016090A1 (en) 2014-11-03 2014-11-03 A method of operating a regenerative burner system and regenerative burner system
EP14004420.7 2014-12-23
EP14004420 2014-12-23

Publications (1)

Publication Number Publication Date
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6036476A (en) * 1996-04-09 2000-03-14 Toyota Jidosha Kabushiki Kaisha Combustion apparatus
JP2000337614A (en) * 1999-05-26 2000-12-08 Osaka Gas Co Ltd Radiant tube combustion device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6036476A (en) * 1996-04-09 2000-03-14 Toyota Jidosha Kabushiki Kaisha Combustion apparatus
JP2000337614A (en) * 1999-05-26 2000-12-08 Osaka Gas Co Ltd Radiant tube combustion device

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