CN203454183U - Burner assembly for converter waste heat recovery boiler - Google Patents
Burner assembly for converter waste heat recovery boiler Download PDFInfo
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- CN203454183U CN203454183U CN201320533381.0U CN201320533381U CN203454183U CN 203454183 U CN203454183 U CN 203454183U CN 201320533381 U CN201320533381 U CN 201320533381U CN 203454183 U CN203454183 U CN 203454183U
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Abstract
The utility model discloses a burner assembly for a converter waste heat recovery boiler, which comprises at least two parallel burners. Each burner is communicated with a coal gas recovery source, a coke oven gas supply source, a low-flame fan, a nitrogen source and an air combustion supporting fan of a steel converter via pipelines; a primary igniter connection is arranged where the coke oven gas supply source and the low-flame fan are communicated with the burner; a secondary igniter connection is arranged where the air combustion supporting fan is communicated with the burner; the end parts of the primary igniter and the secondary igniter are located inside the burners; the burner is internally provided with a flame detection probe communicated with the nitrogen source; each pipeline between the burner and the steel converter is provided with a control valve assembly; and the connection pipelines between the nitrogen source and the flame detection probe are all provided with valves. The burner assembly for the converter waste heat recovery boiler has the advantages that the structure is simple, the efficiency of the boiler can be improved, the temperature of smoke and gas entering the waste heat recovery boiler can be ensured to be basically constant, the boiler load is stabilized, and the service life of the boiler is prolonged.
Description
Technical field
The utility model relates to a kind of burner assembly, particularly relates to a kind of converter heat recovery boiler burner assembly.
Background technology
The device that does not have steady flue-gas temperature in existing converter heat recovery boiler inlet flue duct, because pneumatic steelmaking is periodic, the flue-gas temperature that converter produces also can present cyclically-varying, difference variation scope is very large, make boiler live load not steady, affect boiler service life, produce unstable.
Summary of the invention
The utility model completes in order to solve deficiency of the prior art, the purpose of this utility model be to provide a kind of simple in structure, can improve boiler efficiency, avoid coal gas and air to mix the possibility of blasting simultaneously, guarantee to enter the flue-gas temperature substantially constant of heat recovery boiler simultaneously, steady boiler load, the prolonged boiler life-span also increases the converter heat recovery boiler burner assembly of boiler duty.
A kind of converter heat recovery boiler burner assembly of the present utility model, comprise at least two burners in parallel, described each burner is respectively by the coal-gas recovering source of the gas of pipeline and steelmaking converter, coke-stove gas air supply source, little windburn machine, nitrogen source of the gas and air-breathing blower fan are communicated with, described coke-stove gas air feed source of the gas is provided with one-level igniter with described little windburn machine with described burner connectivity part and is connected, described air-breathing blower fan is provided with secondary points firearm with burner connectivity part and is connected, described one-level igniter and secondary points firearm end are positioned at burner inside, in described burner, be provided with flame-detecting probe, described nitrogen source of the gas is communicated with by pipeline with described flame-detecting probe, the coal-gas recovering source of the gas of described burner and steelmaking converter, coke-stove gas air supply source, on the pipeline of little windburn machine and air-breathing blower fan, be provided with control valve assembly, on connecting line between described nitrogen source of the gas and described burner and flame-detecting probe, be provided with valve.
A kind of converter heat recovery boiler of the present utility model with burner assembly can also be:
Described control valve assembly comprises hand-operated valve, control valve and repid cut-off valve, and described hand-operated valve, control valve and repid cut-off valve are along each pipeline from setting gradually away from burner to close burner.
On the coal-gas recovering source of the gas of described burner and described coke-stove gas air supply source, steelmaking converter, little windburn machine, air-breathing fan connecting tube line, be provided with U-bend, described U-bend is arranged on the coal-gas recovering source of the gas of described coke-stove gas air supply source, steelmaking converter, little windburn machine, air-breathing fan connecting tube line between repid cut-off valve and burner separately.
The coal-gas recovering source of the gas of described steelmaking converter is converter gas recycling pipeline, and described coke-stove gas air supply source is coke-oven coal gas tank, and described nitrogen air supply source is nitrogen pot.
A kind of converter heat recovery boiler burner assembly of the present utility model, owing to comprising at least two burners in parallel, described each burner is respectively by the coal-gas recovering source of the gas of pipeline and steelmaking converter, coke-stove gas air supply source, little windburn machine, nitrogen source of the gas and air-breathing blower fan are communicated with, described coke-stove gas air feed source of the gas is provided with one-level igniter with described little windburn machine with described burner connectivity part and is connected, described air-breathing blower fan is provided with secondary points firearm with burner connectivity part and is connected, described one-level igniter and secondary points firearm end are positioned at burner inside, in described burner, be provided with flame-detecting probe, described nitrogen source of the gas is communicated with by pipeline with described flame-detecting probe, the coal-gas recovering source of the gas of described burner and steelmaking converter, coke-stove gas air supply source, on the pipeline of little windburn machine and air-breathing blower fan, be provided with control valve assembly, on connecting line between described nitrogen source of the gas and described burner and flame-detecting probe, be provided with valve.Like this, at oxygen lance for steel-making converter, start to prepare before oxygen blast, Coke Oven Gas Burner starts, and coke-stove gas burning, is increased to waste heat boiler fire door intake air temperature more than 650 degrees Celsius.Make converter gas form continuous high temperature section flue gas, avoid coal gas and air to mix the possibility of blasting.Oxygen blast process early stage and later stage, gas content is lower than part period of 30%, and burner directly sprays into air, burns part CO, reclaims the chemical energy of CO.Meanwhile, because CO content in the critical point that starts and finish in oxygen blast is very low, for keeping the stable of flue-gas temperature, the critical point burner that starts and finish in oxygen blast also sprays into part coke-stove gas and participates in burning.Therefore the advantage, having is in terms of existing technologies possibility simple in structure, that can improve boiler efficiency, avoid coal gas and air mixing to blast simultaneously.Compare and there is no install combustion device, a kind of converter heat recovery boiler of the present utility model can utilize the flue gas of low-temperature zone in the part CO chemical energy burning and the high boiler waste heat recovery cycle of Extraction From Coke Oven Gas that participates in burning with burner, make boiler operatiopn steady, raise the efficiency.Pneumatic steelmaking cycle smoke characteristic: Cryogenic air---the high CO content of high temperature flue gas---Cryogenic air, the critical point that starts and finish in oxygen blast sprays into coke-stove gas and participates in burning, can avoid the flue gas of two different phases to mix, and blasts.
Accompanying drawing explanation
Fig. 1 the utility model is burner assembly installation site schematic diagram for a kind of converter heat recovery boiler.
A kind of converter heat recovery boiler burner assembly line map of Fig. 2 the utility model.
A kind of converter heat recovery boiler of Fig. 3 the utility model is assembled one of them burner line map with burner assembly.
Burner assembly burner outline drawing for a kind of converter heat recovery boiler of Fig. 4 the utility model.
Figure number explanation
1 ... heat recovery boiler 2 ... burner 3 ... little windburn machine
4 ... coal-gas recovering source of the gas 5 ... coke-stove gas air feed source of the gas 6 ... nitrogen source of the gas
7 ... air-breathing blower fan 8 ... one-level igniter 9 ... secondary points firearm
10 ... flame-detecting probe 11 ... hand-operated valve 12 ... control valve
13 ... repid cut-off valve 14 ... U-bend
The specific embodiment
Fig. 1 to Fig. 4 below in conjunction with accompanying drawing is described in further detail with burner assembly a kind of converter heat recovery boiler of the present utility model.
A kind of converter heat recovery boiler burner assembly of the present utility model, please refer to Fig. 1 to Fig. 4, comprise at least two burners in parallel 2, described each burner 2 is respectively by the coal-gas recovering source of the gas 4 of pipeline and steelmaking converter, coke-stove gas air supply source, little windburn machine 3, nitrogen source of the gas 6 and air-breathing blower fan 7 are communicated with, described coke-stove gas air feed source of the gas 5 is provided with one-level igniter 8 with described little windburn machine 3 with described burner 2 connectivity parts and is connected, described air-breathing blower fan 7 is provided with secondary points firearm 9 with burner 2 connectivity parts and is connected, described one-level igniter 8 and secondary points firearm 9 ends are positioned at burner 2 inside, in described burner 2, be provided with flame-detecting probe 10, described nitrogen source of the gas 6 is communicated with by pipeline with described flame-detecting probe 10, the coal-gas recovering source of the gas 4 of described burner 2 and steelmaking converter, coke-stove gas air supply source, on the pipeline of little windburn machine 3 and air-breathing blower fan 7, be provided with control valve assembly, on connecting line between described nitrogen source of the gas 6 and described burner 2 and flame-detecting probe 10, be provided with valve.Like this, at oxygen lance for steel-making converter, start to prepare before oxygen blast, Coke Oven Gas Burner starts, and coke-stove gas burning, is increased to waste heat boiler fire door intake air temperature more than 650 degrees Celsius.Make converter gas form continuous high temperature section flue gas, avoid coal gas and air to mix the possibility of blasting.Oxygen blast process early stage and later stage, gas content is lower than part period of 30%, and burner 2 directly sprays into air, burns part CO, reclaims the chemical energy of CO.Meanwhile, because CO content in the critical point that starts and finish in oxygen blast is very low, for keeping the stable of flue-gas temperature, the critical point burner 2 that starts and finish in oxygen blast also sprays into part coke-stove gas and participates in burning.Therefore the advantage, having is in terms of existing technologies possibility simple in structure, that can improve boiler efficiency, avoid coal gas and air mixing to blast simultaneously.Can guarantee in addition to enter the flue-gas temperature substantially constant of heat recovery boiler, steady boiler load, the prolonged boiler life-span also increases boiler duty.Compare and there is no install combustion device, a kind of converter heat recovery boiler of the present utility model can utilize the temperature of low-temperature zone flue gas in the part CO chemical energy burning and the high boiler waste heat recovery cycle of Extraction From Coke Oven Gas that participates in burning with burner, make boiler operatiopn steady, raise the efficiency.Pneumatic steelmaking cycle smoke characteristic: Cryogenic air---the high CO content of high temperature flue gas---Cryogenic air, the critical point that starts and finish in oxygen blast sprays into coke-stove gas and participates in burning, can avoid the flue gas of two different phases to mix, and blasts.
Concrete analysis use procedure:
A. initially drop into: when system initially drops into, open little windburn machine 3, open the control valve assembly on little windburn machine 3 and burner 2 pipelines, open one-level igniter 8, then open the control valve assembly on coke-stove gas air supply source and burner 2 connecting lines, light little fire, after little fire is lighted, to no longer extinguish, as ever-burning flame, use.
B. formally put into operation: when steelmaking converter baker is prepared steel-making, burner 2 starts to put into operation, open the control valve assembly on nitrogen source of the gas 6 and burner 2 connecting lines, nitrogen enters burner 2 inside and purges, after purging, close the control valve assembly shut-down purge on nitrogen source of the gas 6 and burner 2 connecting lines, open air-breathing blower fan 7, open the control valve assembly on air-breathing blower fan 7 and burner 2 connection lines, then open the coal-gas recovering source of the gas 4 of steelmaking converter and the control valve assembly on burner 2 connecting lines, open secondary points firearm 9, gas in ignition combustion device 2.Quantity combusted is controlled according to the rotating speed of air-breathing blower fan 7, and the boiler inlet temperature of heat recovery boiler 1 is increased to 1100 ℃, waits for steel-making.
When C. steelmaking converter is prepared to make steel not yet oxygen blast, the gas flow now providing according to the rotational speed regulation air-breathing blower fan 7 of air-breathing blower fan 7, and then regulate burner 2 and gas quantity, control 850 ℃ of boiler inlet temperature; When Converter Oxigen Blowing is made steel, the variation raising according to converter gas temperature, burner 2 reduces rapidly gas quantity and combustion-supporting air quantity, until close the coal-gas recovering source of the gas 4 of steelmaking converter and the control valve assembly on burner 2 connecting pipelines, control the control valve assembly on air-breathing blower fan 7 and burner 2 connecting pipelines simultaneously, and then make the inlet temperature of heat recovery boiler 1 substantially keep constant.
D. during coal-gas recovering, content of CO in smoke >30%, 2 little fire of burner (naked light) (carrying out above-mentioned A mode) operation; The oxygen furnace steel later stage, during flue gas CO<30%, coal gas of converter stops reclaiming, the coal-gas recovering source of the gas 4 that is steelmaking converter is closed with the control valve assembly on burner 2 connecting pipelines, open the valve in nitrogen source of the gas 6 and burner 2 communication line, carry out nitrogen blowing, the interior residual CO flue gas of burner 2 is purged clean, start air-breathing blower fan 7, part air is burnt by the CO in burner 2 and flue gas.
Along with CO content reduces, when being reduced to setting value, open the coal-gas recovering source of the gas 4 of steelmaking converter and the control valve assembly on burner 2 connecting pipelines, increase gradually the coal gas amount of steelmaking converter, make coal gas and the remaining CO burning of combustion air and steelmaking converter, until oxygen rifle stops blowing white silk, now, coal gas and combustion air by steelmaking converter burns completely, maintains flue-gas temperature.
The variation of the coal gas amount of steelmaking converter should not make combustion chamber and boiler inlet temperature surpass 1100 ℃, and the flue gas flow of generation does not affect converter steelmaking process.
During nitrogen slag splashing, the coal gas amount and the combustion-supporting air quantity that reduce burner 2 interior steelmaking converters are as the criterion not affect technique.When during this, oxygen rifle point blows, by above-mentioned C section oxygen blast initial program, control.
E, made steel, during tapping, control valve assembly in the off-gas recovery source gas line of adjusting burner and steelmaking converter, regulate the control valve assembly on pipeline between air-breathing blower fan and burner, increase gas quantity and the combustion-supporting air quantity of burner 2, increase heat recovery boiler inlet temperature, and control temperature <1100 ℃.Wait for the process of next time making steel.With this, move in circles.
A kind of converter heat recovery boiler burner assembly of the present utility model, please refer to Fig. 1 to Fig. 4, on the basis of previous technique scheme, can be specifically that described control valve assembly comprises hand-operated valve 11, control valve 12 and repid cut-off valve 13, described hand-operated valve 11, control valve 12 and repid cut-off valve 13 be along each pipeline from setting gradually away from burner 2 to close burner 2.Hand-operated valve 11 is for manually controlling the opening and closing of each pipeline.Control valve 12 adjusting enters the coal gas amount of burner 2 and the flow velocity of air capacity.The effect of repid cut-off valve 13 is fast shut-off route profilings.Further preferred technical scheme be described burner 2 with described coke-stove gas air supply source, the coal-gas recovering source of the gas 4 of steelmaking converter, little windburn machine 3, air-breathing blower fan 7 connecting lines on be provided with U-bend 14, described U-bend is arranged on the coal-gas recovering source of the gas of described coke-stove gas air supply source, steelmaking converter, little windburn machine, air-breathing fan connecting tube line between repid cut-off valve and burner separately.Like this, prevent that in burner, flue dust enters described fast shut-off valve core, stop up valve.
A kind of converter heat recovery boiler burner assembly of the present utility model, the coal-gas recovering source of the gas 4 that please refer to Fig. 1 to Fig. 4 and can be specifically described steelmaking converter on the basis of previous technique scheme is converter gas recycling pipeline, described coke-stove gas air supply source is coke-oven coal gas tank, and described nitrogen air supply source is nitrogen pot.
Above-mentionedly only several specific embodiments in the utility model are illustrated; but can not be as protection domain of the present utility model; every equivalence variation of having done according to the design spirit in the utility model or modification or equal proportion zoom in or out etc., all should think and fall into protection domain of the present utility model.
Claims (4)
1. a converter heat recovery boiler burner assembly, it is characterized in that: comprise at least two burners in parallel, described each burner is respectively by the coal-gas recovering source of the gas of pipeline and steelmaking converter, coke-stove gas air supply source, little windburn machine, nitrogen source of the gas and air-breathing blower fan are communicated with, described coke-stove gas air feed source of the gas is provided with one-level igniter with described little windburn machine with described burner connectivity part and is connected, described air-breathing blower fan is provided with secondary points firearm with burner connectivity part and is connected, described one-level igniter and secondary points firearm end are positioned at burner inside, in described burner, be provided with flame-detecting probe, described nitrogen source of the gas is communicated with by pipeline with described flame-detecting probe, the coal-gas recovering source of the gas of described burner and steelmaking converter, coke-stove gas air supply source, on the pipeline of little windburn machine and air-breathing blower fan, be provided with control valve assembly, on connecting line between described nitrogen source of the gas and described burner and flame-detecting probe, be provided with valve.
2. a kind of converter heat recovery boiler burner assembly according to claim 1, it is characterized in that: described control valve assembly comprises hand-operated valve, control valve and repid cut-off valve, described hand-operated valve, control valve and repid cut-off valve are along each pipeline from setting gradually away from burner to close burner.
3. a kind of converter heat recovery boiler burner assembly according to claim 2, it is characterized in that: on the coal-gas recovering source of the gas of described burner and described coke-stove gas air supply source, steelmaking converter, little windburn machine, air-breathing fan connecting tube line, be provided with U-bend, described U-bend is arranged on the coal-gas recovering source of the gas of described coke-stove gas air supply source, steelmaking converter, little windburn machine, air-breathing fan connecting tube line between repid cut-off valve and burner separately.
4. according to a kind of converter heat recovery boiler burner assembly described in claim 1 or 2 or 3, it is characterized in that: the coal-gas recovering source of the gas of described steelmaking converter is converter gas recycling pipeline, described coke-stove gas air supply source is coke-oven coal gas tank, and described nitrogen air supply source is nitrogen pot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320533381.0U CN203454183U (en) | 2013-08-29 | 2013-08-29 | Burner assembly for converter waste heat recovery boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320533381.0U CN203454183U (en) | 2013-08-29 | 2013-08-29 | Burner assembly for converter waste heat recovery boiler |
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| Publication Number | Publication Date |
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| CN203454183U true CN203454183U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320533381.0U Expired - Lifetime CN203454183U (en) | 2013-08-29 | 2013-08-29 | Burner assembly for converter waste heat recovery boiler |
Country Status (1)
| Country | Link |
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| CN (1) | CN203454183U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084325A (en) * | 2018-08-06 | 2018-12-25 | 杭州翼兔网络科技有限公司 | A kind of comprehensive combustion control system |
| CN111520704A (en) * | 2019-02-01 | 2020-08-11 | 三菱日立电力系统株式会社 | BFG burner device, operation method thereof and boiler provided with BFG burner device |
-
2013
- 2013-08-29 CN CN201320533381.0U patent/CN203454183U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084325A (en) * | 2018-08-06 | 2018-12-25 | 杭州翼兔网络科技有限公司 | A kind of comprehensive combustion control system |
| CN109084325B (en) * | 2018-08-06 | 2020-03-31 | 深圳深南电燃机工程技术有限公司 | Comprehensive combustion control system |
| CN111520704A (en) * | 2019-02-01 | 2020-08-11 | 三菱日立电力系统株式会社 | BFG burner device, operation method thereof and boiler provided with BFG burner device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170810 Address after: 014030 software park building, rare earth hi tech Zone, the Inner Mongolia Autonomous Region, Baotou C508 Patentee after: Inner Mongolia heat shield energy saving Technology Co.,Ltd. Address before: 100120, room 6, building 1, 416 Tong Dao Street, Xicheng District, Beijing Patentee before: BEIJING SHUOREN HAITAI ENERGY ENVIRONMENT TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200910 Address after: Room 503, block a, national innovation and entrepreneurship demonstration base, Baotou Rare Earth Development Zone, Inner Mongolia Autonomous Region Patentee after: Inner Mongolia Qiju science and Technology Center (limited partnership) Address before: 014030 C508 Software Park, rare-earth high tech Zone, Baotou, the Inner Mongolia Autonomous Region Patentee before: Inner Mongolia heat shield energy saving Technology Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221010 Address after: 014000 Room 409, Office Building, No. 102, Bayantala West Street, Donghe District, Baotou, Inner Mongolia Autonomous Region Patentee after: Inner Mongolia heat shield energy saving Technology Co.,Ltd. Address before: 014030 room 503, block a, national innovation and entrepreneurship demonstration base, Baotou Rare Earth Development Zone, Inner Mongolia Autonomous Region Patentee before: Inner Mongolia Qiju science and Technology Center (limited partnership) |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230209 Address after: Room b027, Floor 3, Building 2, Wucheng Industrial Park, Zhenglu Town, Tianning District, Changzhou City, Jiangsu Province, 213000 Patentee after: Ruixing Low Carbon Technology (Jiangsu) Co.,Ltd. Address before: 014000 Room 409, Office Building, No. 102, Bayantala West Street, Donghe District, Baotou, Inner Mongolia Autonomous Region Patentee before: Inner Mongolia heat shield energy saving Technology Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |