CN103343965B - A kind of reheat furnace system utilizing oxygen-enriched combusting - Google Patents

A kind of reheat furnace system utilizing oxygen-enriched combusting Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
gas
oxygen
combustion
enriched
heat
Prior art date
Application number
CN201310293962.6A
Other languages
Chinese (zh)
Other versions
CN103343965A (en
Inventor
秦凤华
李卫杰
徐少春
Original Assignee
中冶南方(武汉)威仕工业炉有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中冶南方(武汉)威仕工业炉有限公司 filed Critical 中冶南方(武汉)威仕工业炉有限公司
Priority to CN201310293962.6A priority Critical patent/CN103343965B/en
Publication of CN103343965A publication Critical patent/CN103343965A/en
Application granted granted Critical
Publication of CN103343965B publication Critical patent/CN103343965B/en

Links

Classifications

    • 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
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The present invention relates to a kind of reheat furnace system utilizing oxygen-enriched combusting, 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), help 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 helping gas control valve (16), gas regulator (17) and burner control system regulate the confession inbound traffics of coal gas and combustion-supporting gas.The present invention adopts oxygen-enriched combustion technology, can realize effective utilization of low-heat value gas, and more efficiently, energy-saving and environmental protection, oxygen-enriched combusting reheat furnace system is simple simultaneously, and low cost of manufacture, production stability is good.

Description

A kind of reheat furnace system utilizing oxygen-enriched combusting

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.
CN201310293962.6A 2013-07-12 2013-07-12 A kind of reheat furnace system utilizing oxygen-enriched combusting CN103343965B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310293962.6A CN103343965B (en) 2013-07-12 2013-07-12 A kind of reheat furnace system utilizing oxygen-enriched combusting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310293962.6A CN103343965B (en) 2013-07-12 2013-07-12 A kind of reheat furnace system utilizing oxygen-enriched combusting

Publications (2)

Publication Number Publication Date
CN103343965A CN103343965A (en) 2013-10-09
CN103343965B true CN103343965B (en) 2016-04-20

Family

ID=49278781

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310293962.6A CN103343965B (en) 2013-07-12 2013-07-12 A kind of reheat furnace system utilizing oxygen-enriched combusting

Country Status (1)

Country Link
CN (1) CN103343965B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 A kind of low NO of heating furnacexFlue gas recirculation oxygen-enriched burning device and method
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
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101650133A (en) * 2009-09-01 2010-02-17 北京沃克能源科技有限公司 Recycling system of smoke gas energy for realizing high-temperature and low-oxygen combustion
CN102062394A (en) * 2010-12-21 2011-05-18 鞍山普贝达科技有限公司 Intensive oxygen enriched supply device for implementing oxygen enriched combustion of heating furnace
CN203454110U (en) * 2013-07-12 2014-02-26 中冶南方(武汉)威仕工业炉有限公司 Heating furnace system utilizing oxygen-enriched combustion

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101650133A (en) * 2009-09-01 2010-02-17 北京沃克能源科技有限公司 Recycling system of smoke gas energy for realizing high-temperature and low-oxygen combustion
CN102062394A (en) * 2010-12-21 2011-05-18 鞍山普贝达科技有限公司 Intensive oxygen enriched supply device for implementing oxygen enriched combustion of heating furnace
CN203454110U (en) * 2013-07-12 2014-02-26 中冶南方(武汉)威仕工业炉有限公司 Heating furnace system utilizing oxygen-enriched combustion

Also Published As

Publication number Publication date
CN103343965A (en) 2013-10-09

Similar Documents

Publication Publication Date Title
CN101253367B (en) Method of pre-heating fuel and comburent for oxy-burners, using combustion air pre-heating installations
CN204756909U (en) Stationary flame's regenerative furnace combustion system
CN201254529Y (en) Cement clinker calcination system
CN102878817A (en) Continuous combusting regenerative industrial furnace
CN104456617A (en) Control method of regenerative combustion device
CN201926297U (en) Novel heat accumulating type burner heating furnace
CN103225018B (en) Air and gas two-heat-accumulation heating furnace
CN203432296U (en) Energy-saving ceramic kiln
CN101314811A (en) Method for using blast furnace gas to heat of large-scale walking beam type plate blank heating furnace
CN204165045U (en) Warm flue gas recirculation coal powder burner in one
CN101839638B (en) Heat accumulating and preheating combined heating method of slag-drip high-temperature silicon steel plate blank heating furnace
CN201875734U (en) Combustion supporting air heating and energy-saving device and ceramic firing kiln
CN105465784B (en) A kind of Regeneration type Radiant Tube Burner with smoke backflow
CN102607267A (en) Regenerative high-temperature air combustion energy-saving environment-friendly shuttle-type kiln
CN101285576B (en) Low heat value burnt gas high-temperature air combustion system and method
CN205352106U (en) Magnesium metal heat accumulation formula smelting furnace waste heat utilization equipment
CN204704817U (en) A kind of low nitrogen oxide gas burner
CN104121591A (en) Energy-saving efficient incinerator
CN101196369A (en) Heat accumulation-exchange type heating stove and heating method thereof
CN205448679U (en) Aluminium stove is melted in small -size waste heat recovery energy -conservation
CN105588135A (en) Smoke recirculator for boiler
CN101871042A (en) Method and device for reusing flue gas waste heat of annealing furnace of continuous annealing unit
CN202066385U (en) Novel waste heat recovery and use device
CN108278906A (en) Suitable for the optimal control method under the conditions of recuperative heater low load combustion
CN202012913U (en) Novel flue gas self-reflux low-oxygen combustor

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 430223 No. 33 University Park Road, Donghu Development Zone, Wuhan City, Hubei Province

Patentee after: Zhongye South (Wuhan) Thermal Engineering Co., Ltd.

Address before: 430223 No. 33 University Park Road, Donghu Development Zone, Wuhan City, Hubei Province

Patentee before: MCC South (Wuhan) Weishi Thermal Engineering Co., Ltd.

CP03 Change of name, title or address

Address after: 430223 No. 33 University Park Road, Donghu Development Zone, Wuhan City, Hubei Province

Patentee after: MCC South (Wuhan) Weishi Thermal Engineering Co., Ltd.

Address before: 430205 No. 33 University Park Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province

Patentee before: WISDRI (Wuhan) WIS Industrial Furnace Co., Ltd.

CP03 Change of name, title or address