CN102703678B - Parallel flow type steel billet heating furnace - Google Patents
Parallel flow type steel billet heating furnace Download PDFInfo
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- CN102703678B CN102703678B CN 201210180252 CN201210180252A CN102703678B CN 102703678 B CN102703678 B CN 102703678B CN 201210180252 CN201210180252 CN 201210180252 CN 201210180252 A CN201210180252 A CN 201210180252A CN 102703678 B CN102703678 B CN 102703678B
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Abstract
The invention relates to a parallel flow type steel billet heating furnace, which comprises a furnace body, an air supply system, a fuel supply system and a waste gas exhaust system, wherein the furnace body is provided with steel billet feed ports, steel billet discharge ports and waste gas discharge ports; a burner is arranged in the furnace body; the furnace body has a double-hearth U-shaped structure; the upper end of the U-shaped structure is connected with horizontal structure parts; the steel billet feed ports are positioned at the top ends of the horizontal structure parts on the two sides respectively; the steel billet discharge ports are positioned at the bottom of the U-shaped structure; the burner is positioned on the upper parts of hearths on the two sides; the waste gas discharge ports are positioned on the horizontal structure parts; the hearths on the two sides are provided with conveying devices; the conveying devices are provided with steel billet frames; the steel billet frames move from top to bottom along with the conveying devices; a combustion heating and gas preheating process is alternately performed on the hearths on the two sides; and reversing operationof the hearths on the two sides is realized through actions of a fuel three-way valve, an air three-way valve and a waste gas three-way valve. Through the double-hearth structure, a parallel flow type heating mode of a steel billet is realized; and the parallel flow type steel billet heating furnace has the advantages of high heating efficiency, high hearth utilization rate, small floor area and high steel billet machining capacity.
Description
Technical field
The invention belongs to technical field of steel rolling, relate to the equipment of steel billet heating, be specifically related to a kind of cocurrent flow type billet heating furnace.
Background technology
In the steel rolling production process, need various steel billets, steel to be heated to given temperature and to keep the regular hour.The steel billet heating is the important step on the steel rolling production-line, is undertaking the task that the qualified steel billet of heating quality is provided for rolling process.The steel billet heating is undertaken by heat exchanging process in the process furnace, and heat exchanging process is passed to conduction, radiation and transmission of heat by convection mode and is heated steel billet in the stove.Conduction is for the different object direct contact heat transfer of temperature, the heat exchange that is taken place by the motion of unbound electron or molecular motion.Radiative transfer is that heat is passed to steel billet in the invisible heat mode, and transmission of heat by convection is the heat exchanging process of furnace gas when contacting with steel surface.The billet heating furnace of prior art is for being the fixed heating in plane or horizontal mobile heating, and heating efficiency is low, and unit surface work-yard amount of finish is little, can not adapt to the scale operation steel billet.
Granted publication number a kind of " steel billet heating unit; comprise pusher, slide rail, process furnace, tapping spout, extractor; described slide rail is eight rail that are parallel to each other that are arranged on the ground level, pusher of per two one steel rails configuration for CN201367455Y discloses.This steel billet heating unit can carry out single heating processing to continuously cast bloom or steel ingot, simultaneously can heat steel ingot and continuously cast bloom compound again, overcome the limitation that the steel billet heating unit is subjected to the processing with foreign materials materials limitations, improve the utilization ratio of steel billet frame thermic devices, reduce energy consumption, saved production cost.", but this patent can not solve the problem that above-mentioned prior art exists.
Summary of the invention
The purpose of this invention is to provide a kind of cocurrent flow type billet heating furnace, to improve the amount of finish of steel billet heating rate and working unit area, reduce energy consumption and the production cost of steel billet heating.
Cocurrent flow type billet heating furnace of the present invention comprises body of heater, air feed system, the fuel supply system waste gas exhaust system of unifying.Body of heater is provided with steel billet opening for feed, steel billet discharge port and Waste gas outlet, is provided with burner in the body of heater.Body of heater is two thorax U-shaped structures, and the upper end of U-shaped structure partly links to each other with horizontal structure.The steel billet opening for feed lays respectively at the top of both sides horizontal structure part, and the steel billet discharge port is positioned at the bottom of U-shaped structure.Burner is positioned at the top of both sides burner hearth, and Waste gas outlet is positioned at the horizontal structure part of both sides.The both sides burner hearth is provided with e Foerderanlage, and the steel billet frame is housed on the e Foerderanlage, and the steel billet frame is with the e Foerderanlage movement that circulates from top to bottom.The fuel gas pipeline is connected to the fuel gas inlet of both sides burner by the fuel T-valve, and gas blower is connected to the gas inlet of burner by the air T-valve, and the both sides Waste gas outlet is connected to exhaust emission system by the waste gas T-valve.
Process furnace is provided with two steel billet preheaters, and the steel billet preheater links to each other with the steel billet opening for feed.The both sides Waste gas outlet is connected to exhaust emission system by the steel billet preheater.Process furnace is provided with the steel billet water cooler, and the steel billet water cooler is connected with the steel billet discharge port or is connected to burner hearth by discharge port.The warm air of cooling steel billet can directly flow along burner hearth from bottom to top, the heating steel billet.Gas blower is connected to the gas inlet of burner by steel billet water cooler, air T-valve.Exhaust emission system comprises fly-ash separator, induced draft fan and chimney.Steel billet opening for feed and steel billet discharge port are provided with sealed structure.Every wing furnace thorax is provided with 1 ~ 100 burner.
The present invention has realized steel billet cocurrent flow type heating mode by two thorax structures, and the both sides burner hearth hockets to burn and heats and the smoke pre-heating process, realizes the switch operation of both sides burner hearth by the action of fuel T-valve, gas inlet T-valve and waste gas T-valve.By adding steel billet preheater and steel billet water cooler, take full advantage of flue gas and the steel billet cooling heat preheating of releasing and be heated steel billet and combustion-supporting gas, further improve the thermo-efficiency of steel billet heating, reduce production costs.Compared with prior art the present invention has the heating efficiency height, burner hearth utilization ratio height, the little and big advantage of steel billet amount of finish of floor space.
Description of drawings
Fig. 1 is the structural representation of cocurrent flow type billet heating furnace of the present invention;
Fig. 2 is the structural representation of another program of the present invention.
Wherein:
1-fuel T-valve, 2-steel billet opening for feed, 3-burner, 4-body of heater, 5-burner hearth, 6-steel billet, 7-steel billet frame, 8-gas blower, 9-air T-valve, 10-waste gas T-valve, 11-horizontal structure part, 12-e Foerderanlage, 13-steel billet discharge port, 14-steel billet preheater, 15-steel billet water cooler, 16-fuel gas inlet, 17-gas inlet.
Embodiment
Describe the present invention below in conjunction with embodiment and accompanying drawing.
Embodiment 1
Cocurrent flow type billet heating furnace of the present invention comprises body of heater 4, air feed system, the fuel supply system waste gas exhaust system of unifying as shown in Figure 1.Body of heater is two thorax U-shaped structures, and the upper end of U-shaped structure both sides links to each other with horizontal structure part 11.Be provided with burner 3 in the body of heater, burner is positioned at the top of both sides burner hearth 5, and burner quantity is 6 of every sides.Body of heater is provided with steel billet opening for feed 2, steel billet discharge port 13 and Waste gas outlet.Steel billet opening for feed 2 lays respectively at the top of both sides horizontal structure part, and steel billet discharge port 13 is positioned at the bottom of U-shaped structure, and Waste gas outlet is positioned at the horizontal structure part.The both sides burner hearth is provided with e Foerderanlage 12, and steel billet frame 7 is housed on the e Foerderanlage, is used for placing steel billet.E Foerderanlage is driven by driving arrangement, and the steel billet frame is with the e Foerderanlage cycle rotation, and steel billet is mobile from top to bottom.The fuel gas pipeline is connected to the fuel gas inlet 16 of both sides burner 3 by fuel T-valve 1, and gas blower is connected to the gas inlet 17 of burner by air T-valve 9, and the both sides Waste gas outlet is connected to exhaust emission system by waste gas T-valve 10.Exhaust emission system comprises fly-ash separator, induced draft fan and chimney.Steel billet opening for feed 2 and steel billet discharge port 13 are provided with sealed structure.
The process of cocurrent flow type billet heating furnace heating steel billet is that steel billet 6 is sent in the body of heater by the steel billet opening for feed 2 of body of heater both sides, inserts the steel billet frame 7 on the e Foerderanlage 12.E Foerderanlage rotates under the driving of driving arrangement, steel billet on the steel billet frame moves with e Foerderanlage, earlier through horizontal structure part 11, move down again and pass burner hearth 5 to the bottom of U-shaped structure, in moving process, progressively be heated to 1200～1300 ℃, through the steel billet discharge port 13 later process processing treatment of coming out of the stove.Fuel gas is through the fuel gas inlet 16 of fuel T-valve 1 to A side burner, and combustion air is bloated by gas blower 8, through the gas inlet 17 of air T-valve 9 to A side burner.Air and fuel gas spray through burner, and in the burning of the top of burner hearth, the flue gas of generation moves downwards along burner hearth 5, with heated steel billet following current, and the heating steel billet.The steel billet 6 that flue gas moves down to the preheating of body of heater B wing furnace thorax through the U-shaped structural base of body of heater.The exothermic waste gas of preheating steel billet arrives exhaust emission system through Waste gas outlet, the waste gas T-valve 10 of B side horizontal structure part.Commutation then, air and fuel gas enter B side burner 3, and in the burning of B wing furnace thorax top, the flue gas of generation moves downwards along B wing furnace thorax, the steel billet that heating moves down, the steel billet after the heating is come out of the stove through the steel billet discharge port.Flue gas discharges to exhaust emission system through A side Waste gas outlet, waste gas T-valve 10.By the action of fuel T-valve 1, air T-valve 9 and waste gas T-valve 10, realize switch operation, whole process automation is carried out.Control by time variable at interval turnaround time or determine by the waste gas outlet temperature of Waste gas outlet.Present embodiment is by timed interval control, and the period is 15 minutes, i.e. A wing furnace thorax operation changes the operation of B wing furnace thorax after 15 minutes.
Embodiment 2
Another embodiment of the present invention as shown in Figure 2, process furnace is provided with two steel billet preheaters 14 and a steel billet water cooler 15.The steel billet preheater links to each other with steel billet opening for feed 2, and the both sides Waste gas outlet is connected to exhaust emission system by steel billet preheater and waste gas T-valve 10.The steel billet water cooler is connected with steel billet discharge port 13, and gas blower 8 is connected to the gas inlet 17 of both sides burner by steel billet water cooler 15, air T-valve 9.Other structure is identical with embodiment 1.Waste heat preheating with the discharging flue gas is heated 6 to 150～200 ℃ on steel billet, and then sends into process furnace and heat.The heat of releasing by the cooling of steel billet water cooler 15 usefulness steel billets is preheated to 200～300 ℃ with combustion air, to burner 3 combustion-supporting burnings.Take full advantage of flue gas and the steel billet cooling heat preheating of releasing and be heated steel billet and combustion-supporting gas, further improve the steel billet heating thermo-efficiency, reduce production costs.Present embodiment leaves the temperature control of preheater turnaround time at interval by waste gas, the control temperature is 150 ℃.When the temperature of combustion gas reaches 150 ℃, begin commutation, this mode of operation also is applicable to molten charge.
Claims (6)
1. cocurrent flow type billet heating furnace, comprise body of heater (4), air feed system, the fuel supply system exhaust emission system of unifying, body of heater is provided with steel billet opening for feed (2), steel billet discharge port (13) and Waste gas outlet, be provided with burner (3) in the body of heater, it is characterized in that: described body of heater (4) links to each other with horizontal structure part (11) for two thorax U-shaped structures, the upper end of described U-shaped structure; Described steel billet opening for feed (2) lays respectively at the top of both sides horizontal structure part, and described steel billet discharge port (13) is positioned at the bottom of U-shaped structure; Described burner (3) is positioned at the top of both sides burner hearth (5), and described Waste gas outlet is positioned at the horizontal structure part; The both sides burner hearth is provided with e Foerderanlage (12), and steel billet frame (7) is housed on the e Foerderanlage, and the steel billet frame is with the e Foerderanlage movement that circulates from top to bottom; The fuel gas pipeline is connected to the fuel gas inlet (16) of both sides burner by fuel T-valve (1), gas blower is connected to the gas inlet (17) of burner by air T-valve (9), and the both sides Waste gas outlet is connected to exhaust emission system by waste gas T-valve (10).
2. cocurrent flow type billet heating furnace according to claim 1, it is characterized in that: described process furnace is provided with two steel billet preheaters (14), described steel billet preheater links to each other with steel billet opening for feed (2), and described both sides Waste gas outlet is connected to exhaust emission system by the steel billet preheater.
3. cocurrent flow type billet heating furnace according to claim 1, it is characterized in that: described process furnace is provided with steel billet water cooler (15), described steel billet water cooler is connected with steel billet discharge port (13), and gas blower is connected to the gas inlet (17) of burner by steel billet water cooler, air T-valve (9).
4. cocurrent flow type billet heating furnace according to claim 1, it is characterized in that: described exhaust emission system comprises fly-ash separator, induced draft fan and chimney.
5. cocurrent flow type billet heating furnace according to claim 1, it is characterized in that: described steel billet opening for feed (2) and steel billet discharge port (13) are provided with sealed structure.
6. cocurrent flow type billet heating furnace according to claim 1 is characterized in that: described burner (3) is 1 ~ 100 of every side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210180252 CN102703678B (en) | 2012-06-04 | 2012-06-04 | Parallel flow type steel billet heating furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210180252 CN102703678B (en) | 2012-06-04 | 2012-06-04 | Parallel flow type steel billet heating furnace |
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| Publication Number | Publication Date |
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| CN102703678A CN102703678A (en) | 2012-10-03 |
| CN102703678B true CN102703678B (en) | 2013-10-09 |
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| CN 201210180252 Active CN102703678B (en) | 2012-06-04 | 2012-06-04 | Parallel flow type steel billet heating furnace |
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| CN114737043A (en) * | 2022-04-20 | 2022-07-12 | 广东韶钢松山股份有限公司 | Heating equipment with stable heating, furnace cooling method thereof and method for detecting burning loss condition in billet heating |
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| JPH0261010A (en) * | 1988-08-29 | 1990-03-01 | Kawasaki Steel Corp | Continuous annealing furnace for steel strip |
| CN100561092C (en) * | 2006-01-13 | 2009-11-18 | 北京嘉永会通能源科技有限公司 | Double-firepot ring-shaped shaft kiln |
| CN201245560Y (en) * | 2008-06-14 | 2009-05-27 | 何志雄 | Cocurrent heat storing type dual-chamber limekiln capable of realizing two-stage calcination |
| CN101886159B (en) * | 2010-07-13 | 2011-11-16 | 贾会平 | Method and device for heating steel billet |
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Address after: 051431 Hebei city of Shijiazhuang province Luancheng douyu town equipment manufacturing base of Xinhua Road No. 6 (douyu West Middle School) Applicant after: Shijiazhuang Xinhua Energy and Environmental Protection Technology Co., Ltd. Address before: 051431 Hebei city of Shijiazhuang province Luancheng douyu town equipment manufacturing base of Xinhua Road No. 6 (douyu West Middle School) Applicant before: Shijiazhuang Xinhua Industrial Furnace Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: SHIJIAZHUANG XINHUA INDUSTRIAL FURNACE CO., LTD. TO: SHIJIAZHUANG XINHUA ENERGY ENVIRONMENTAL TECHNOLOGY CO., LTD. |
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