CN109028064B - A kind of heating furnace single channel coal gas and natural gas convertible burner and its application method - Google Patents
A kind of heating furnace single channel coal gas and natural gas convertible burner and its application method Download PDFInfo
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- CN109028064B CN109028064B CN201810909548.6A CN201810909548A CN109028064B CN 109028064 B CN109028064 B CN 109028064B CN 201810909548 A CN201810909548 A CN 201810909548A CN 109028064 B CN109028064 B CN 109028064B
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- butterfly valve
- natural gas
- gas
- fuel channel
- fuel
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 190
- 239000003345 natural gas Substances 0.000 title claims abstract description 96
- 239000003034 coal gas Substances 0.000 title claims abstract description 55
- 238000010438 heat treatment Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000000446 fuel Substances 0.000 claims abstract description 94
- 239000007789 gas Substances 0.000 claims abstract description 44
- 238000002485 combustion reaction Methods 0.000 claims abstract description 30
- 238000009423 ventilation Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims 1
- 238000005266 casting Methods 0.000 claims 1
- 239000011819 refractory material Substances 0.000 claims 1
- 239000007921 spray Substances 0.000 description 13
- 238000012423 maintenance Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011822 basic refractory Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
- F23D14/48—Nozzles
-
- 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
- F23D14/60—Devices for simultaneous control of gas and combustion air
-
- 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
- F23D14/62—Mixing devices; Mixing tubes
- F23D14/64—Mixing devices; Mixing tubes with injectors
Abstract
The invention discloses a kind of heating furnace single channel coal gas and natural gas convertible burner, shell side is equipped with combustion-supporting air hose；Enclosure interior side is equipped with fuel channel, and fuel channel one end is equipped with gas piping, and gas piping side is equipped with natural gas line；Fuel channel internal sleeve is equipped with centre wind pipeline；Fuel channel one end is equipped with air-distributing disc；Disk is equipped with outside centre wind pipeline one end.Its application method is when fuel is switched to natural gas by coal gas, closes butterfly valve III, opens butterfly valve II, and adjust the aperture of butterfly valve I, butterfly valve II, butterfly valve IV, makes natural gas full combustion；When fuel is switched to coal gas by natural gas, butterfly valve II is closed, after the combustion of natural gas inside fuel channel, butterfly valve III is opened, and readjust the aperture of butterfly valve I, butterfly valve III, butterfly valve IV, makes coal gas full combustion.The present invention is transformed on the basis of traditional burner, greatly reduces the improvement cost of heating furnace, improves the utilization rate of old burner.
Description
Technical field
The invention belongs to steel rolling equipment technical field, in particular to a kind of heating furnace single channel coal gas and natural gas are dual-purpose
Burner and its application method.
Background technique
Since coke-stove gas preparation cost is low, traditional heater for rolling steel generally uses coke-stove gas as fuel, works as coal
When gas producer is overhauled, heating furnace is forced blowing out, and hot rolling line is caused to stop production, and brings loss to the performance of enterprises；In order to
Solving the problems, such as this, research staff develops a kind of coke-stove gas and the dual-purpose burner of natural gas, when gas generator maintenance,
Continue to produce using natural gas as fuel, avoids economic loss caused by blowing out；
As shown in Figs. 1-2, existing coal gas, natural gas convertible burner are all made of binary channels, are provided in 1 side of shell
Combustion-supporting air hose 3 is provided with natural gas line 5 inside shell 1, and natural gas line 5 is connect with municipal natural gas line, natural gas
Hot-air channel 21 is formed between 1 inner wall of 5 outer wall of pipeline and shell；Gas piping 6, gas piping 6 have been arranged in natural gas line 5
It is connect with the coal gas escape pipe of gas generator, forms natural gas channel 9 between 5 inner wall of 6 outer wall of gas piping and natural gas line；
It has been arranged centre wind pipeline 7 in gas piping 6, has formed gas passage between 6 inner wall of 7 outer wall of centre wind pipeline and gas piping
10；When gas generator maintenance, remain to continue to produce using natural gas as fuel；But for traditional heating furnace and
Speech, in order to realize that coal gas is dual-purpose with natural gas, it is necessary to the burner more renewed, single burner price from tens of thousands of to hundreds of thousands etc.,
And a large-scale heating furnace needs six or seven ten burners, replacement cost is up to millions of or even up to ten million, this is undoubtedly increased
The cost input of enterprise.
Summary of the invention
It is insufficient in the prior art the purpose of the present invention is overcoming, a kind of heating furnace single channel coal gas and natural gas two are provided
With burner, it is provided with disk in central tube one end of traditional coke-stove gas burner, when coal gas is switched to natural gas, disk stops
Portion of natural gas reaches the complete of natural gas to make the reduction of the amount that sprays in the case that the ejection pressure of natural gas is constant
Burning；It is transformed on the basis of traditional burner, greatly reduces the improvement cost of heating furnace, improve the utilization of old burner
Rate.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of heating furnace single channel coal gas and natural gas convertible burner, including shell, combustion-supporting air hose, fuel channel, in
Heart air piping, air-distributing disc, disk, the shell is equipped with flange, for burner to be fixed on heating furnace, the shell side
Equipped with combustion-supporting air hose, combustion-supporting air hose side is equipped with butterfly valve I, and it is that fuel fires that external air is entered inside burner by combustion-supporting air hose
It burns and oxygen is provided, and provide pressure for flame spray penetration；The enclosure interior side is equipped with fuel channel, fuel channel and shell
Body is coaxially arranged, and described fuel channel one end is equipped with gas piping, and gas piping is equipped with butterfly valve III, the gas piping side
Equipped with natural gas line, natural gas line is equipped with butterfly valve II；Hot-air channel is formed between fuel channel outer wall and inner walls, is helped
Combustion wind circulates in hot-air channel；The fuel channel internal sleeve is equipped with centre wind pipeline, and centre wind pipeline one end is equipped with butterfly valve
IV, on the one hand the air-flow that centre wind sprays is convenient for adjusting the ejection length of flame, on the other hand ensure that the full combustion of fuel,
To ensure that the rigidity of flame；Fuel channel is formed between centre wind pipeline and fuel channel, described fuel channel one end is equipped with
Air-distributing disc, air-distributing disc are immobilized in the shell between wall and fuel channel outer wall, and the air-distributing disc is poured by basic refractory,
The air-distributing disc is groove structure, and inside grooves are equipped with several ventilation holes II being evenly arranged, the heat sprayed by ventilation hole II
Wind is known as First air, is equipped with several ventilation holes I being evenly arranged outside groove, the hot wind sprayed by ventilation hole I is referred to as secondary
The diameter ratio of wind, the ventilation hole I and ventilation hole II is 3:2；First air is mixed with fuel, provides oxygen for fuel combustion, and two
Secondary wind is modified the spray penetration and spray regime of flame；Be equipped with disk outside centre wind pipeline one end, disk with
Gap is equipped between fuel channel, when fuel is switched to natural gas by coal gas, disk blocks portion of natural gas, to make natural
The amount sprayed in the case that the ejection pressure of gas is constant reduces, and ensure that the completely burned of natural gas.
Preferably, the centre wind pipeline, fuel channel, combustion-supporting air hose caliber ratio be 1:3:9, ensure that filling for fuel
Divided combustion, and ensure that the spray distance of flame.
Preferably, the diameter ratio of the disk diameter and centre wind pipeline is 1.2-2, and disk length is disk diameter
1.5-3 times, ensure that the full combustion of natural gas.
Preferably, Y shape, fuel channel and natural gas tube are constituted between the fuel channel and gas piping and natural gas line
Angle between road and fuel channel and gas piping is 150 ° -170 °, reduces the pressure of coal gas or natural gas in pipeline
Loss, ensure that the flowing pressure of coal gas or natural gas.
Preferably, the natural gas line, gas piping side are equipped with axial flow blower, and two axial flow blowers are located at
Butterfly valve II, III lower part of butterfly valve, when axial flow blower accelerates Fuel switching in fuel channel remaining coal gas or natural gas circulation
Speed, and reduce the residual quantity of fuel channel fuel.
Preferably, the fuel channel side is equipped with butterfly valve V, when heating furnace maintenance, closes butterfly valve V, avoids combustion
The leakage of material.
A kind of heating furnace single channel coal gas and natural gas convertible burner application method, when fuel is switched to naturally by coal gas
When gas, butterfly valve III is closed, butterfly valve II is opened, and adjust the aperture of butterfly valve I, butterfly valve II, butterfly valve IV, makes natural gas full combustion；
When fuel is switched to coal gas by natural gas, butterfly valve II is closed, opens butterfly valve III, and readjust butterfly valve I, butterfly valve III, butterfly valve
IV aperture makes coal gas full combustion.
Preferably, the combustion-supporting air temperature is 400 DEG C -500 DEG C, reduces the preheating time of combustion air, improves burner
Efficiency of combustion.
When preferably, using natural gas, the aperture of butterfly valve I is 70 ° -80 °, and the aperture of butterfly valve II is 15 ° -20 °, butterfly valve IV
Aperture be 70 ° -90 °；When using coal gas, the aperture of butterfly valve I is 35 ° -55 °, and the aperture of butterfly valve III is 25 ° -35 °, butterfly valve IV
Aperture be 5 ° -30 °.
Preferably, the center wind pressure is 7500Pa-8500Pa, and combustion-supporting wind pressure is 7500Pa-8500Pa, natural gas
Pressure be 8000Pa-10000Pa, the pressure of coal gas is 8000Pa-10000Pa.
Beneficial effect is shown the present invention compared with prior art:
1) disk, when coal gas is switched to natural gas, disk are provided in central tube one end of traditional coke-stove gas burner
Portion of natural gas is blocked, to make the amount sprayed in the case that the ejection pressure of natural gas is constant reduction, reaches natural gas
Completely burned；It is transformed on the basis of traditional burner, greatly reduces the improvement cost of heating furnace, improve old burner
Utilization rate；
2) centre wind pipeline, fuel channel, combustion-supporting air hose caliber ratio be 1:3:9, ensure that the full combustion of fuel, and
It ensure that the spray distance of flame；
3) diameter ratio of disk diameter and centre wind pipeline is 1.2-2, and disk length is the 1.5-3 of disk diameter
Times, it ensure that the full combustion of natural gas；
4) Y shape, fuel channel and natural gas line and combustion are constituted between fuel channel and gas piping and natural gas line
Angle between pipe material and gas piping is 150 ° -170 °, reduces the pressure loss of coal gas or natural gas in pipeline, is guaranteed
The flowing pressure of coal gas or natural gas；
5) natural gas line, gas piping side are equipped with axial flow blower, and two axial flow blowers are located at butterfly valve II, butterfly
III lower part of valve, when axial flow blower accelerates Fuel switching in fuel channel remaining coal gas or natural gas velocity of liquid assets, and subtract
The residual quantity of fuel channel fuel is lacked；
6) fuel channel side is equipped with butterfly valve V, when heating furnace maintenance, closes butterfly valve V, avoids the leakage of fuel.
Detailed description of the invention
Attached drawing 1 is the convertible burner structural schematic diagram of the prior art；
Attached drawing 2 is the convertible burner schematic diagram of internal structure of the prior art；
Attached drawing 3 is a kind of heating furnace single channel coal gas of the present invention and natural gas convertible burner structural schematic diagram；
Attached drawing 4 is a kind of heating furnace single channel coal gas of the present invention and natural gas convertible burner schematic diagram of internal structure；
In figure: 1- shell, 2- flange, the combustion-supporting air hose of 3-, 4- butterfly valve I, 5- natural gas line, 6- gas piping, the center 7-
Air piping, 8- air-distributing disc, 9- natural gas channel, 10- gas passage, 11- axial flow blower, 12- butterfly valve II, 13- butterfly valve III, 14-
Butterfly valve IV, 15- butterfly valve V, 16- fuel channel, 17- ventilation hole I, 18- ventilation hole II, 19- disk, 20- fuel channel, 21- heat
Wind channel.
Specific embodiment
For convenience of the understanding of those skilled in the art, 1-4, further has technical solution of the present invention with reference to the accompanying drawing
Body explanation.
A kind of heating furnace single channel coal gas and natural gas convertible burner, including shell 1, combustion-supporting air hose 3, fuel channel
16, centre wind pipeline 7, air-distributing disc 8, disk 19, the shell 1 is equipped with flange 2, for burner to be fixed on heating furnace,
1 side of shell be equipped with combustion-supporting air hose 3, combustion-supporting 3 side of air hose be equipped with butterfly valve I 4, external air by combustion-supporting air hose 3 into
Enter and provide oxygen inside burner for fuel combustion, and provides pressure for flame spray penetration；1 interior side of shell is equipped with combustion
Pipe material 16, fuel channel 16 and shell 1 are coaxially arranged, and described 16 one end of fuel channel is equipped with gas piping 6, gas piping 6
It is equipped with butterfly valve III 13,6 side of gas piping is equipped with natural gas line 5, and natural gas line 5 is equipped with butterfly valve II 12；Combustion
Hot-air channel 21 is formed between 1 inner wall of 16 outer wall of pipe material and shell, combustion air circulates in hot-air channel 21；The fuel channel
16 internal sleeves are equipped with centre wind pipeline 7, and 7 one end of centre wind pipeline is equipped with butterfly valve IV 14, and the air-flow one side that centre wind sprays is just
In the ejection length for adjusting flame, the full combustion of fuel on the other hand ensure that, to ensure that the rigidity of flame；Centre wind
Fuel channel 20 is formed between pipeline 7 and fuel channel 16, described 16 one end of fuel channel is equipped with air-distributing disc 8, and air-distributing disc 8 is fixed on
Between 16 outer wall of 1 inner wall of shell and fuel channel, the air-distributing disc 8 is poured by basic refractory, and the air-distributing disc 8 is recessed
Slot structure, inside grooves are equipped with several ventilation holes II 18 being evenly arranged, and the hot wind sprayed by ventilation hole II 18 is referred to as primary
Wind, groove outside are equipped with several ventilation holes I 17 being evenly arranged, and are known as Secondary Air by the hot wind that ventilation hole I 17 sprays, described
The diameter ratio of ventilation hole I 17 and ventilation hole II 18 is 3:2；First air is mixed with fuel, provides oxygen, Secondary Air for fuel combustion
The spray penetration and spray regime of flame are modified；Be equipped with disk 19 outside described 7 one end of centre wind pipeline, disk 19 with
Gap is equipped between fuel channel 16, when fuel is switched to natural gas by coal gas, disk 19 blocks portion of natural gas, to make
The amount sprayed in the case that the ejection pressure of natural gas is constant reduces, and ensure that the completely burned of natural gas.
The centre wind pipeline 7, fuel channel 16, combustion-supporting air hose 3 caliber ratio be 1:3:9, ensure that the abundant of fuel
Burning, and ensure that the spray distance of flame.
The diameter ratio of 19 diameter of disk and centre wind pipeline 7 is 1.5, and 19 length of disk is 19 diameter of disk
1.5-3 times, it ensure that the full combustion of natural gas.
Y shape, fuel channel 16 and natural gas tube are constituted between the fuel channel 16 and gas piping 6 and natural gas line 5
Angle between road 5 and fuel channel 16 and gas piping 6 is 160 °, reduces the pressure damage of coal gas or natural gas in pipeline
It loses, ensure that the flowing pressure of coal gas or natural gas.
The natural gas line 5,6 side of gas piping are equipped with axial flow blower 11, and two axial flow blowers 11 are located at
Butterfly valve II 12, III 13 lower part of butterfly valve, remaining coal gas or natural in fuel channel 16 when axial flow blower 11 accelerates Fuel switching
The velocity of liquid assets of gas, and reduce the residual quantity of 16 fuel of fuel channel.
16 side of fuel channel is equipped with butterfly valve V 15, when heating furnace maintenance, closes butterfly valve V 15, avoids fuel
Leakage.
A kind of heating furnace single channel coal gas and natural gas convertible burner application method, when fuel is switched to naturally by coal gas
When gas, butterfly valve III 13 is closed, butterfly valve II 12 is opened, and adjust the aperture of butterfly valve I 4, butterfly valve II 12, butterfly valve IV 14, makes natural gas
Full combustion；When fuel is switched to coal gas by natural gas, butterfly valve II 12 is closed, opens butterfly valve III 13, and readjust butterfly valve I
4, the aperture of butterfly valve III 13, butterfly valve IV 14 makes coal gas full combustion.
The combustion-supporting air temperature is 450 DEG C, reduces the preheating time of combustion air, improves the efficiency of combustion of burner.
When using natural gas, the aperture of butterfly valve I 4 is 80 °, and the aperture of butterfly valve II 12 is 15 °, and the aperture of butterfly valve IV 14 is
90°；When using coal gas, the aperture of butterfly valve I 4 is 50 °, and the aperture of butterfly valve III 13 is 30 °, and the aperture of butterfly valve IV 14 is 6 °.
The center wind pressure is 8000Pa, and combustion-supporting wind pressure is 8000Pa, and the pressure of natural gas is 9000Pa, coal gas
Pressure is 9000Pa.
Above content is only to structure example of the invention and explanation, affiliated those skilled in the art
It makes various modifications or additions to the described embodiments or is substituted in a similar manner, without departing from invention
Structure or beyond the scope defined by this claim, be within the scope of protection of the invention.
Claims (10)
1. a kind of heating furnace single channel coal gas and natural gas convertible burner, including shell, combustion-supporting air hose, fuel channel, center
Air piping, air-distributing disc, disk, it is characterised in that the shell is equipped with flange, and the shell side is equipped with combustion-supporting air hose, combustion-supporting
Air hose side is equipped with butterfly valve I；The enclosure interior side is equipped with fuel channel, and fuel channel is coaxially arranged with shell, the combustion
Pipe material one end is equipped with gas piping, and gas piping is equipped with butterfly valve III, and the gas piping side is equipped with natural gas line, day
Right feed channel is equipped with butterfly valve II；Hot-air channel is formed between fuel channel outer wall and inner walls；The fuel channel internal sleeve
Equipped with centre wind pipeline, centre wind pipeline one end is equipped with butterfly valve IV；Fuel channel, institute are formed between centre wind pipeline and fuel channel
Fuel channel one end is stated equipped with air-distributing disc, air-distributing disc is immobilized in the shell between wall and fuel channel outer wall, and the air-distributing disc is by alkali
Property refractory material casting form, the air-distributing disc be groove structure, inside grooves be equipped with several ventilation holes II being evenly arranged, it is recessed
It is equipped with several ventilation holes I being evenly arranged outside slot, the diameter ratio of the ventilation hole I and ventilation hole II is 3:2；The centre wind
It is equipped with disk outside pipeline one end, gap is equipped between disk and fuel channel.
2. a kind of heating furnace single channel coal gas and natural gas convertible burner according to claim 1, it is characterised in that institute
State centre wind pipeline, fuel channel, combustion-supporting air hose caliber ratio be 1:3:9.
3. a kind of heating furnace single channel coal gas and natural gas convertible burner according to claim 1, it is characterised in that institute
The diameter ratio for stating disk diameter and centre wind pipeline is 1.2-2, and disk length is 1.5-3 times of disk diameter,.
4. a kind of heating furnace single channel coal gas and natural gas convertible burner according to claim 1, it is characterised in that institute
State and constitute Y shape between fuel channel and gas piping and natural gas line, fuel channel and natural gas line and fuel channel with
Angle between gas piping is 150 ° -170 °.
5. a kind of heating furnace single channel coal gas and natural gas convertible burner according to claim 1, it is characterised in that institute
State natural gas line, gas piping side is equipped with axial flow blower, two axial flow blowers are located under butterfly valve II, butterfly valve III
Portion.
6. a kind of heating furnace single channel coal gas and natural gas convertible burner according to claim 1, it is characterised in that institute
Fuel channel side is stated equipped with butterfly valve V.
7. the application method of a kind of heating furnace single channel coal gas and natural gas convertible burner according to claim 1,
Be characterized in that when fuel is switched to natural gas by coal gas, close butterfly valve III, open butterfly valve II, and adjust butterfly valve I, butterfly valve II,
The aperture of butterfly valve IV makes natural gas full combustion；When fuel is switched to coal gas by natural gas, butterfly valve II is closed, opens butterfly valve
III, and the aperture of butterfly valve I, butterfly valve III, butterfly valve IV is readjusted, make coal gas full combustion.
8. the application method of a kind of heating furnace single channel coal gas and natural gas convertible burner according to claim 7,
It is characterized in that combustion-supporting air temperature is 400 DEG C -500 DEG C.
9. the application method of a kind of heating furnace single channel coal gas and natural gas convertible burner according to claim 7,
When being characterized in that using natural gas, the aperture of butterfly valve I is 70 ° -80 °, and the aperture of butterfly valve II is 15 ° -20 °, the aperture of butterfly valve IV
It is 70 ° -90 °；When using coal gas, the aperture of butterfly valve I is 35 ° -55 °, and the aperture of butterfly valve III is 25 ° -35 °, the aperture of butterfly valve IV
It is 5 ° -30 °.
10. the application method of a kind of heating furnace single channel coal gas and natural gas convertible burner according to claim 1,
It is characterized in that center wind pressure is 7500Pa-8500Pa, combustion-supporting wind pressure is 7500Pa-8500Pa, and the pressure of natural gas is
8000Pa-10000Pa, the pressure of coal gas are 8000Pa-10000Pa.
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| CN201810909548.6A CN109028064B (en) | 2018-08-10 | 2018-08-10 | A kind of heating furnace single channel coal gas and natural gas convertible burner and its application method |
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| CN201810909548.6A CN109028064B (en) | 2018-08-10 | 2018-08-10 | A kind of heating furnace single channel coal gas and natural gas convertible burner and its application method |
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| CN109028064B true CN109028064B (en) | 2019-11-22 |
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| CN109899788A (en) * | 2019-02-25 | 2019-06-18 | 石家庄钢铁有限责任公司 | The mixed gas and combustion of natural gas switching device and method of a kind of heating furnace |
| CN111854458B (en) * | 2019-04-25 | 2022-06-14 | 中冶长天国际工程有限责任公司 | Lime kiln and control method thereof |
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| CN206320751U (en) * | 2016-11-18 | 2017-07-11 | 岳阳钟鼎热工电磁科技有限公司 | High Hydrogen fuel Flat-flame ultra-low NOx emission oil and gas combination burner |
| CN107270290A (en) * | 2017-08-10 | 2017-10-20 | 西安拓沃能动科技有限公司 | A kind of nozzle structure and super oxygen-poor burner |
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| CN109028064A (en) | 2018-12-18 |
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Denomination of invention: The invention relates to a single channel gas and natural gas dual-purpose burner for a heating furnace and an application method thereof Effective date of registration: 20210929 Granted publication date: 20191122 Pledgee: Shandong Linyi Luozhuang Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG SHENGYANG METAL TECHNOLOGY Co.,Ltd. Registration number: Y2021980010174 |
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Date of cancellation: 20221018 Granted publication date: 20191122 Pledgee: Shandong Linyi Luozhuang Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG SHENGYANG METAL TECHNOLOGY CO.,LTD. Registration number: Y2021980010174 |
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Denomination of invention: Single channel gas and natural gas burner for heating furnace and its application method Effective date of registration: 20221114 Granted publication date: 20191122 Pledgee: Shandong Linyi Luozhuang Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG SHENGYANG METAL TECHNOLOGY CO.,LTD. Registration number: Y2022980021903 |
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Date of cancellation: 20231107 Granted publication date: 20191122 Pledgee: Shandong Linyi Luozhuang Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG SHENGYANG METAL TECHNOLOGY CO.,LTD. Registration number: Y2022980021903 |
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Denomination of invention: A single channel gas and natural gas dual purpose burner for heating furnace and its usage method Effective date of registration: 20231110 Granted publication date: 20191122 Pledgee: Shandong Linyi Luozhuang Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG SHENGYANG METAL TECHNOLOGY CO.,LTD. Registration number: Y2023980064929 |