CN103343965B - Heating furnace system utilizing oxygen-enriched combustion - Google Patents
Heating furnace system utilizing oxygen-enriched combustion Download PDFInfo
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- CN103343965B CN103343965B CN201310293962.6A CN201310293962A CN103343965B CN 103343965 B CN103343965 B CN 103343965B CN 201310293962 A CN201310293962 A CN 201310293962A CN 103343965 B CN103343965 B CN 103343965B
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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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Abstract
The invention relates to a heating furnace system utilizing oxygen-enriched combustion, which comprises a gas pipeline system, a combustion-supporting gas pipeline system, a gas heat exchanger (12), a combustion-supporting gas heat exchanger (13), a combustion system and a furnace body (14), wherein the combustion system comprises an oxygen-enriched combustor (15), a combustion-supporting gas regulating valve (16), a gas regulating valve (17) and a control system, gas introduced into the gas pipeline system is preheated by the gas heat exchanger (12) and then introduced into the oxygen-enriched combustor (15), combustion-supporting gas introduced into the combustion-supporting gas pipeline system is preheated by the combustion-supporting gas heat exchanger (13) and then introduced into the oxygen-enriched combustor (15), and the supply flow of the gas and the combustion-supporting gas is regulated by the combustion-supporting gas regulating valve (16), the gas regulating valve (17. The invention adopts the oxygen-enriched combustion technology, can realize the effective utilization of the low-heat value gas, is more efficient, energy-saving and environment-friendly, and has simple oxygen-enriched combustion heating furnace system, low manufacturing cost and good production stability.
Description
Technical field
The present invention relates to heating furnace technical field, more particularly, relate to a kind of reheat furnace system utilizing oxygen-enriched combustion technology.
Background technology
At present, heating furnace is widely used in billet rolling, forging line.Utilize heating furnace by heating steel billet, burn till red steel, make it reach to meet the steel billet temperature of rolling, forging needs, be then rolled or forge.In China, heating furnace One's name is legion, the mode of traditional heating stove many employings conventional diffusion burn, energy consumption is high, seriously polluted.
In recent years, heater for rolling steel has developed regenerative combustion technology, iron and steel enterprise's by-product blast furnace gas can be applied to heater for rolling steel by recuperative heater, saves the high heating value such as natural gas, coke-stove gas fat coal gas, achieves effective utilization of by-product blast furnace gas.But still there is many shortcomings in recuperative heater: (1) power consumption is higher, a large amount of electric energy of its hold over system reversal valve frequent operation consumption, the air-introduced machine of system configuration relatively high power, also consumes a large amount of electric energy; (2) reversal valve, heat storage are short for service life, change frequent, add production cost, reduce operational use time; (3) smoke evacuation in CO content higher, especially Two-cuff Technique heating furnace coal gas side smoke evacuation, its CO content up to several thousand ppm, local even more than 10,000 ppm, serious environment pollution.
Summary of the invention
The technical problem to be solved in the present invention is, provides the reheat furnace system utilizing oxygen-enriched combustion technology of a kind of burning highly effective, energy-conserving and environment-protective, can realize effective utilization of low-heat value gas.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of reheat furnace system utilizing oxygen-enriched combusting, comprise gaspipe line system, combustion-supporting air pipe system, gas change heater, help gas heat-exchanger, combustion system and body of heater, described combustion system comprises oxygen-enriched burner, help gas control valve, gas regulator and control system, the coal gas that gaspipe line system passes into passes in oxygen-enriched burner after gas change heater preheating, the combustion-supporting gas that combustion-supporting air pipe system passes into passes in oxygen-enriched burner after helping gas heat-exchanger preheating, gas control valve is helped by described, gas regulator and burner control system regulate the confession inbound traffics of coal gas and combustion-supporting gas.
Utilize in the reheat furnace system of oxygen-enriched combusting of the present invention, described gaspipe line system comprises gaspipe line and is arranged on the gas valve on described gaspipe line, and described gaspipe line is connected with described gas change heater.
Utilize in the reheat furnace system of oxygen-enriched combusting of the present invention, described combustion-supporting air pipe system comprises combustion-supporting air pipe and the first oxygen valve, the second oxygen valve and the air door that are connected with described combustion-supporting air pipe respectively, described first oxygen valve is connected with oxygen pipe network, described second oxygen valve is connected with oxygen making unit, and described air door is connected with combustion fan.
Utilize in the reheat furnace system of oxygen-enriched combusting of the present invention, the oxygen concentration range carried in described combustion-supporting air pipe system is 21 ~ 60%.
Utilize in the reheat furnace system of oxygen-enriched combusting of the present invention, described body of heater is provided with flue, described gas change heater and help gas heat-exchanger to connect with described flue.
Utilize in the reheat furnace system of oxygen-enriched combusting of the present invention, described in help gas heat-exchanger to be pipe heat exchanger, plate type heat exchanger or heat exchange of heat pipe.
Utilize in the reheat furnace system of oxygen-enriched combusting of the present invention, described gas change heater be pipe heat exchanger, plate type heat exchanger or heat exchange of heat pipe.
Utilize in the reheat furnace system of oxygen-enriched combusting of the present invention, the coal gas passed in described gaspipe line system is mixed gas, coal gas of converter or blast furnace gas.
Utilize in the reheat furnace system of oxygen-enriched combusting of the present invention, described body of heater is heater for rolling steel, rotary heating furnace or forge furnace.
Implement the reheat furnace system that the present invention utilizes oxygen-enriched combusting, there is following beneficial effect:
1, the present invention adopts oxygen-enriched combustion technology, more efficiently, energy-saving and environmental protection.
2, utilize oxygen-enriched combusting and combustion-supporting gas, the low-heat value gas such as blast furnace gas, coal gas of converter, mixed gas are applied to heating furnace burning by gas double pre-heating mode, realize effective utilization of steel plant's by-product low-heat value gas, save the high heating value such as natural gas, coke-stove gas fat coal gas.
3, the present invention utilizes the reheat furnace system of oxygen-enriched combusting simple, and low cost of manufacture, production stability is good.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation that the present invention utilizes the reheat furnace system of oxygen-enriched combusting.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
As shown in Figure 1, the present invention utilizes the reheat furnace system of oxygen-enriched combusting to comprise gaspipe line system, combustion-supporting air pipe system, gas change heater 12, help gas heat-exchanger 13, combustion system and body of heater 14.
Combustion system comprises oxygen-enriched burner 15, helps gas control valve 16, gas regulator 17 and control system.The coal gas passed in gaspipe line system passes in oxygen-enriched burner 15 after gas change heater 12 preheating, and coal gas can be the low-heat value gas such as mixed gas, coal gas of converter or blast furnace gas.The combustion-supporting gas that combustion-supporting air pipe system passes into passes in oxygen-enriched burner 15 after helping gas heat-exchanger 13 preheating, and combustion-supporting gas is oxygen-enriched air.Coal gas and combustion-supporting gas mix after-combustion in oxygen-enriched burner 15.By the confession inbound traffics helping gas control valve 16, gas regulator 17 and burner control system to regulate coal gas and combustion-supporting gas.The number that every platform heating furnace arranges oxygen-enriched burner 15 is determined according to heating furnace production capacity and body of heater 14 size.Body of heater 14 can be the heating furnace of the various steel billets such as heater for rolling steel, rotary heating furnace or forge furnace, steel part.
The present invention utilizes the two preheating of coal gas in the reheat furnace system of oxygen-enriched combusting, combustion-supporting gas, and combustion type is oxygen-enriched combusting, can improve the ignition temperature of coal gas and the radiation intensity of flue gas, has the features such as efficient, energy-conservation, low-nitrogen oxide discharging.According to heating furnace technique needs, rational coal gas, combustion-supporting gas preheat temperature are set, ignition temperature and gas radiation intensity that rational combustion-supporting gas oxygen concentration can improve the low-heat value gas such as blast furnace gas, coal gas of converter are set, thus can the steel plant such as blast furnace gas, coal gas of converter by-product low-heat value gas be applied in heating furnace, realize efficient application and the energy-saving and emission-reduction of steel plant's by-product low-heat value gas.
Further, the gas valve 9 that gaspipe line system comprises gaspipe line 8 and is arranged on gaspipe line 8, gaspipe line 8 is connected with gas change heater 12.Gaspipe line 8 is connected with gaspipe network 10.Coal gas is heated to more than 200 DEG C in gas change heater 12, is then supplied in combustion system through gaspipe line 8.
Further, combustion-supporting air pipe system comprises combustion-supporting air pipe 7 and the first oxygen valve 2, second oxygen valve 6 and the air door 3 be connected with combustion-supporting air pipe 7 respectively, first oxygen valve 2 is connected with oxygen pipe network 1, second oxygen valve 6 is connected with oxygen making unit 5, and air door 3 is connected with combustion fan 4.The oxygen producing oxygen-enriched air supplies by oxygen pipe network 1, also produces by arranging oxygen making unit 5.The air that oxygen supplies with combustion fan 4 mixes in pipeline, obtains oxygen-enriched air.Combustion-supporting air pipe system comprises the first oxygen valve 2, oxygen making unit 5, second oxygen valve 6, air door 3, combustion fan 4 and combustion-supporting air pipe 7.Oxygen-enriched air is as the combustion-supporting gas of burning, and the air that oxygen and the combustion fan 4 of oxygen making unit 5 or oxygen pipe network 1 supply mixes in pipeline, obtains oxygen-enriched air.Combustion-supporting gas feeds through combustion-supporting air pipe 7 and helps in gas heat-exchanger 13, and combustion-supporting gas is heated to more than 300 DEG C helping in gas heat-exchanger 13, is then supplied in combustion system through combustion-supporting air pipe 7.
Further, the oxygen concentration range carried in combustion-supporting air pipe system is 21 ~ 60%, greatly can improve ignition temperature and the gas radiation intensity of the low-heat value gas such as blast furnace gas, coal gas of converter.
Further, body of heater 14 is provided with flue 11, gas change heater 12 and help gas heat-exchanger 13 to connect with flue 11.Flue gas is discharged first by helping gas heat-exchanger 13 that combustion-supporting gas is preheated to more than 300 DEG C from body of heater 14, then by gas change heater 12 by more than gas preheating to 200 DEG C, flue gas temperature after two-stage heat exchange is down to less than 300 DEG C, discharges, reduce thermal pollution through air-introduced machine or chimney.
Further, gas heat-exchanger 13 and gas change heater 12 is helped to be the heat exchanger of the forms such as pipe heat exchanger, plate type heat exchanger or heat exchange of heat pipe.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (8)
1. utilize a reheat furnace system for oxygen-enriched combusting, it is characterized in that, comprise gaspipe line system, combustion-supporting air pipe system, gas change heater (12), help gas heat-exchanger (13), combustion system and body of heater (14),
Described combustion system comprises oxygen-enriched burner (15), helps gas control valve (16), gas regulator (17) and control system, the coal gas that gaspipe line system passes into passes in oxygen-enriched burner (15) after gas change heater (12) preheating, the combustion-supporting gas that combustion-supporting air pipe system passes into passes in oxygen-enriched burner (15) after helping gas heat-exchanger (13) preheating, by the described confession inbound traffics helping gas control valve (16), gas regulator (17) and burner control system to regulate coal gas and combustion-supporting gas; Described combustion-supporting air pipe system comprises combustion-supporting air pipe (7) and the first oxygen valve (2), the second oxygen valve (6) and the air door (3) that are connected with described combustion-supporting air pipe (7) respectively, described first oxygen valve (2) is connected with oxygen pipe network (1), described second oxygen valve (6) is connected with oxygen making unit (5), and described air door (3) is connected with combustion fan (4).
2. the reheat furnace system utilizing oxygen-enriched combusting according to claim 1, it is characterized in that, described gaspipe line system comprises gaspipe line (8) and is arranged on the gas valve (9) on described gaspipe line (8), and described gaspipe line (8) is connected with described gas change heater (12).
3. the reheat furnace system utilizing oxygen-enriched combusting according to claim 1, is characterized in that, the oxygen concentration range carried in described combustion-supporting air pipe system is 21 ~ 60%.
4. the reheat furnace system utilizing oxygen-enriched combusting according to claim 1, is characterized in that, described body of heater (14) is provided with flue (11), described gas change heater (12) and help gas heat-exchanger (13) to connect with described flue (11).
5. the reheat furnace system utilizing oxygen-enriched combusting according to claim 1, is characterized in that, described in help that gas heat-exchanger (13) is pipe heat exchanger, plate type heat exchanger or heat exchange of heat pipe.
6. the reheat furnace system utilizing oxygen-enriched combusting according to claim 1, is characterized in that, described gas change heater (12) be pipe heat exchanger, plate type heat exchanger or heat exchange of heat pipe.
7. the reheat furnace system utilizing oxygen-enriched combusting according to claim 1, is characterized in that, the coal gas passed in described gaspipe line system is mixed gas, coal gas of converter or blast furnace gas.
8. the reheat furnace system utilizing oxygen-enriched combusting according to claim 1, is characterized in that, described body of heater (14) is heater for rolling steel, rotary heating furnace or forge furnace.
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| CN201310293962.6A CN103343965B (en) | 2013-07-12 | 2013-07-12 | Heating furnace system utilizing oxygen-enriched combustion |
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| CN103343965B true CN103343965B (en) | 2016-04-20 |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104748568A (en) * | 2015-04-03 | 2015-07-01 | 首钢总公司 | Heating method and system based on steel rolling heating furnace |
| CN105066114A (en) * | 2015-08-27 | 2015-11-18 | 四川德胜集团钒钛有限公司 | Boiler oxygen-enriched combustion system for power generation set |
| CN106545846A (en) * | 2015-09-17 | 2017-03-29 | 鞍钢股份有限公司 | Low NOx flue gas circulation oxygen-enriched combustion device and method for heating furnace |
| CN105241262B (en) * | 2015-11-03 | 2017-10-20 | 中冶东方工程技术有限公司 | A kind of heating furnace pure oxygen burning and carbon dioxide capture systems and technique |
| CN105953409A (en) * | 2016-06-27 | 2016-09-21 | 河南中托力合化学有限公司 | Vertical energy saving device for fuel gas heating medium furnace |
| CN108893127A (en) * | 2018-07-03 | 2018-11-27 | 西安建筑科技大学 | A kind of method that routine internal heat type low-temperature dry distillation furnace transform oxygen-enriched gas retort as |
| CN109556416A (en) * | 2018-11-28 | 2019-04-02 | 重庆赛迪热工环保工程技术有限公司 | A kind of pure oxygen flue gas circular heating furnace control system and its control method |
| CN110145741A (en) * | 2019-06-03 | 2019-08-20 | 重庆赛迪热工环保工程技术有限公司 | An Oxygen-enriched Burner Applicable to Various Calorific Value Coal Gases |
| CN110440593A (en) * | 2019-08-13 | 2019-11-12 | 蚌埠市昆宇机械加工厂 | A kind of glass processing heating device |
| CN111219994A (en) * | 2019-10-31 | 2020-06-02 | 鞍钢股份有限公司 | A kind of heating furnace oxygen-enriched combustion safety protection control method |
| CN115354142B (en) * | 2022-08-18 | 2023-11-28 | 重庆赛迪热工环保工程技术有限公司 | Combustion control method of heating furnace |
| CN115354140B (en) * | 2022-08-18 | 2023-08-15 | 重庆赛迪热工环保工程技术有限公司 | Oxygen-enriched heating furnace system |
| CN116351890A (en) * | 2023-02-23 | 2023-06-30 | 北京中科国韬科技有限公司 | Steel rolling heating method by coupling low oxygen-enriched air and low heat value gas for continuous combustion |
| CN116576683A (en) * | 2023-05-15 | 2023-08-11 | 广东维正环保机电工程有限公司 | Environment-friendly energy-saving system for graphite production |
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Address after: 430223 No. 33 University Park Road, Donghu Development Zone, Wuhan City, Hubei Province Patentee after: WISDRI (WUHAN) THERMAL INDUSTRY Co.,Ltd. Address before: 430223 No. 33 University Park Road, Donghu Development Zone, Wuhan City, Hubei Province Patentee before: WISDRI (WUHAN) WISFUR THERMAL TECHNOLOGY CO.,LTD. |
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