CN102787193B - Coking reduction smelting device - Google Patents
Coking reduction smelting device Download PDFInfo
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- CN102787193B CN102787193B CN 201210246957 CN201210246957A CN102787193B CN 102787193 B CN102787193 B CN 102787193B CN 201210246957 CN201210246957 CN 201210246957 CN 201210246957 A CN201210246957 A CN 201210246957A CN 102787193 B CN102787193 B CN 102787193B
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Abstract
The invention relates to a coking reduction smelting device, which includes steel-making or iron-making equipment, a roasting chamber, a coking reduction chamber, two calcining furnaces and gas treatment equipment. The roasting chamber is connected to the coking reduction chamber through a pellet distributor, and the coking reduction chamber is connected to the steel-making or iron-making equipment through a smelting hopper. The calcining furnaces are positioned on two sides of the coking reduction chamber. Silicon carbide brick partition walls are set between the calcining furnaces and the calcining furnaces. Calcining furnace outlets are in connection with a lime inlet of the steel-making or iron-making equipment, the furnace gas outlet of which is connected to a reducing gas inlet of the coking reduction chamber. A coking gas outlet is connected to the gas treatment equipment, the coal gas outlet of which is divided into two ways, wherein one way is connected to combustion equipment of the roasting chamber, and the other road is connected to calcining equipment of the calcining furnaces. The invention realizes coproduction of molten steel, molten iron, lime and coal tar products, and has the advantages of mutual utilization of energy, effective energy utilization, product treatment and transportation cost reduction, production cost lowering, and economic benefit enhancement.
Description
Technical field
The invention belongs to metallurgy and chemical production technical field, relate to a kind of steel-making or ironmaking combination preparing device, be specifically related to a kind of coking reducing and smelting device.
Background technology
Ironmaking or steelmaking process need add quickened lime as solvent or slag former in stove.The slag making speed that the use of quickened lime can be accelerated to smelt is shortened the heat, and reduces impurity and brings iron manufacturing process into, improves the quality of molten iron.Iron manufacturing process is sent into lime, coke powder in the stove with the roasting pelletizing pig iron and is smelted.The molten iron of producing 1 ton need consume 500 kilograms quickened lime, and the lime of adding can consume a part of heat of blast furnace steel-making.Limestone material is sintered into lime through preheating section preheating, calcining zone in the production process of quickened lime simultaneously; cool off to go out device to normal temperature and become lime product with cooling air through cooling zone then; process of cooling not only increases power consumption; and the cool lime high-temperature gas is discharged into atmosphere; increase the weight of topsoil, be unfavorable for environment protection.Powdered iron ore or reduction of iron ore process are reductive agent with the coke, need carry out the roasting of pelletizing earlier before iron manufacturing process carries out, and will coke and reduced material together be heated to reduction temperature with a certain amount of heat again.Need the coke water of molten state is cooled to normal temperature in the same coke production, be transported to iron-smelting device; Be cooled to normal temperature after pellet roasting is finished, be transported to iron-smelting device, so not only increase production cost, and the energy is not fully utilized.The coke-oven gas that the coking process of cooling produces contains a large amount of obnoxious flavoures, leaks into atmosphere, the harm environmental safety.Prior art pellet roasting, lime production, coking, ironmaking and steel-making are separate production systems, and separate production system not only increases transportation cost, and by product and residual heat can utilize mutually, and energy dissipation is big.
Summary of the invention
The purpose of this invention is to provide a kind of coking reducing and smelting device, realize pellet roasting, limestone calcination, carbonization of coal, pelletizing reduction and smelting process associating, the energy utilizes mutually, reduces per unit area yield energy consumption and materials consumption, increases economic efficiency.
Coking reducing and smelting device of the present invention comprises ironmaking equipment or steelmaking equipment, and ironmaking equipment is blast furnace and blast furnace sinter equipment, and steelmaking equipment comprises electric arc furnace or intermediate frequency furnace.Blast furnace, blast furnace sinter equipment, intermediate frequency furnace and electric arc furnace are respectively equipped with opening for feed, slag notch, lime entrance, products export and furnace gas export.Coking reducing and smelting device is provided with roasting chamber, two calcining furnaces, coking reduction chamber and gas processing devices.Coking reduction chamber is provided with pelletizing distributor, coal dust distributor, pusher equipment, reducing gas entrance and discharge port.Calcining furnace is provided with calcining furnace hopper, opening for feed, calciner and calcining furnace outlet.The roasting chamber is provided with hopper, opening for feed, preheating section, heating zone and discharge port, and heating zone has combustion equipment.The discharge port of roasting chamber is connected to coking reduction chamber by the pelletizing distributor, and the discharge port of coking reduction chamber is connected with ironmaking equipment or steelmaking equipment by smelting hopper.Calcining furnace is positioned at the both sides of coking reduction chamber, is provided with the silicon carbide brick partition wall between calcining furnace and the coking reduction chamber, and the calcining furnace outlet is connected to the lime entrance of ironmaking equipment or steelmaking equipment.The furnace gas export of ironmaking equipment or steelmaking equipment is connected with the reducing gas entrance of coking reduction chamber.The cooking gas outlet of coking reduction chamber is connected to gas processing device, and the gas exit of gas processing device is divided into two-way, and one the road is connected to the combustion equipment of roasting chamber, and another road is connected to the calciner of calcining furnace.
Coking reduction chamber is the body structure that an end is big, an end is little or the halfpace type structure that the upper end is little, the lower end is big.The big end of body structure is provided with fire door, and the lower end of halfpace structure is provided with fire door.Pusher equipment comprises pushing device, push rod and push pedal, and pushing device is connected with push pedal by push rod.The roasting chamber is girder structure, tube-in-tube structure, and the two thorax structures of stream or Xinhua's wheat Wurz structure.Roasting chamber's heating zone of girder structure is provided with 1～5 layer of burning beam, every layer of 1～5 burning beam, and burning beam is provided with burner, and the gas treatment equipment outlet is connected to the fuel gas inlet of burning beam.Be provided with combustion chamber, last inner core, following inner core and firebridge in the roasting chamber of telescoping structure, the combustion chamber is divided into upper and lower two-layer, and every layer is provided with 3～8 combustion chambers, and same layer combustion chamber evenly arranged, link to each other by firebridge between the upper and lower layer combustion chamber staggered arrangement, each combustion chamber and inner core.Calcining furnace is beam-type limekiln structure or peripheral nozzle structure or fluidizing furnace structure.The calciner of beam-type limekiln is burning beam, and burning beam is provided with burner.The calciner of fluidizing furnace is fluidized-bed, and the calciner of peripheral burner is peripheral burner.Gas processing device comprises oil-gas separator, coal tar collector, gas purifying equipment, heat-exchange equipment, cooling apparatus, pressure exerting device, water removal device, sweetener and decoking equipment.Device is provided with preheating chamber, the calcining furnace hopper is connected with preheating chamber, and preheating chamber is connected with calcining furnace; Wingdale is calcined to calcining compartment after the preheating chamber preheating.
Device is provided with 2 ~ 5 groups of roastings-coking reduction chamber, and roasting-coking reduction chamber comprises roasting chamber and coking reduction chamber, roasting-corresponding its pelletizing distributor in coking reduction chamber and coal dust distributor.Calcining furnace is positioned at the both sides of coking reduction chamber, calcining furnace and the coking reduction alternate setting in chamber.The every group of roasting-corresponding ironmaking equipment in coking reduction chamber or steelmaking equipment, perhaps 2 ~ 5 groups of roasting-coking reduction chamber ironmaking equipment of common correspondence or steelmaking equipments.Device is provided with preheating chamber, the calcining furnace hopper is connected with preheating chamber, and preheating chamber is connected with calcining furnace; Wingdale is calcined to calcining compartment after the preheating chamber preheating.The periphery burner is positioned at front end or the rear end of calcining compartment.If ironmaking equipment or steelmaking equipment are that ironmaking equipment or steelmaking equipment bottom are provided with track when sharing one, ironmaking equipment or steelmaking equipment are mobile in orbit.
The distributing mode of coking reduction chamber can be multiple, by coal dust distributor and pelletizing distributor, can be with coal dust cloth at coking reduction chamber periphery, and high temperature pelletizing cloth is in the middle of coal dust; Perhaps coal dust and pelletizing cloth successively, perhaps coal dust and pelletizing evenly mix cloth etc.
The present invention utilizes ironmaking equipment or steelmaking equipment and coking reduction chamber, roasting chamber, calcining furnace and gas processing device associating, realize coproduction molten steel, molten iron, lime and coal-tar products, energy utilizes mutually, effectively utilized the energy, reduce product treatment and trucking costs, reduce iron and steel, lime and coke product production cost, increase economic efficiency.
Description of drawings
Fig. 1 is the structural representation of coking reducing and smelting device of the present invention;
Fig. 2 is the side-view of Fig. 1.
1-hopper, 2-roasting chamber, 3-burning beam, 4-fire door, 5-pelletizing distributor, 6-coal dust distributor, 7-silicon carbide brick partition wall, 8-coking reduction chamber, 9-peripheral burner, 10-calcining furnace, the outlet of 11-calcining furnace, 12-intermediate frequency furnace, 13-slag notch, 14-electro-induction equipment, 15-calcining furnace hopper, the outlet of 16-cooking gas, 17-gas processing device, 18-push rod, 19-reducing gas entrance, 20-furnace gas export, 21-lime entrance, 22-molten steel outlet, 23-push pedal, 24-pushing device, 25-smelting hopper, the outlet of 26-coal tar.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
Coking reducing and smelting device of the present invention comprises intermediate frequency furnace 12, roasting chamber 2, coking reduction chamber 8, two calcining furnaces 10 and gas processing device 17 as shown in Figure 1 and Figure 2.Intermediate frequency furnace is furnished with electro-induction equipment 14, and intermediate frequency furnace is established lime entrance 21, slag notch 13, molten steel outlet 22 and furnace gas export 20.Coking reduction chamber is provided with pelletizing distributor 5, coal dust distributor 6, pusher equipment, reducing gas entrance 19 and discharge port.Pusher equipment comprises pushing device 24, push rod 18 and push pedal 23, and pushing device is connected with push pedal by push rod.Coking reduction chamber 8 is the body structure that an end is big, an end is little, and the big end of body structure is provided with fire door 4.The roasting chamber is provided with hopper 1, opening for feed, preheating section, heating zone and discharge port, and the combustion equipment of heating zone is girder structure, and the heating zone of the roasting chamber of girder structure is provided with two-layer burning beam 3,3 on upper strata, and 2 of lower floors, burning beam is provided with burner.The discharge port of roasting chamber is connected to coking reduction chamber 8 by pelletizing distributor 5, and the discharge port of coking reduction chamber is connected with intermediate frequency furnace by smelting hopper 25.The coal dust distributor is connected with pulverized coal preparation equipment.Calcining furnace is provided with calcining furnace hopper 15, opening for feed, calciner and calcining furnace outlet 11.Calcining furnace 10 is peripheral nozzle structure, and the calciner of peripheral nozzle structure calcining furnace is peripheral burner.Calcining furnace is positioned at the both sides of coking reduction chamber, is provided with silicon carbide brick partition wall 7 between calcining furnace and the coking reduction chamber, and calcining furnace outlet 11 is connected to the lime entrance 21 of intermediate frequency furnace.The furnace gas export 20 of intermediate frequency furnace is connected with the reducing gas entrance 19 of coking reduction chamber, cooking gas outlet 16 is connected to gas processing device 17, the gas exit of gas processing device is divided into two-way, one the road is connected to the burning beam burner of roasting chamber, another road is connected to the peripheral burner of calcining furnace, and the coal tar outlet 26 of gas processing device is connected to the coal tar naphtha processing unit (plant).Gas processing device 17 comprises oil-gas separator, gas purifying equipment, heat-exchange equipment, cooling apparatus, pressure exerting device, water removal device, sweetener and decoking equipment.
The process of coking reducing and smelting of the present invention is, the powdered iron ore pelletizing enters the roasting chamber 2 of girder structure through hopper 1, is advanced into the burning heating zone under after the preheating section preheating of top, utilizes the furnace gas burning to heat, and is heated to 900～1300 ℃.Enter coking reduction chamber 8 through discharge port and pelletizing distributor 5 then, coal dust is supplied with by pulverized coal preparation equipment, enters coking reduction chamber through coal dust distributor 6.The reductibility gas that the steel-making of intermediate frequency furnace process produces enters coking reduction chamber 8 through reducing gas entrance 19.Wingdale enters the calcining furnace 10 of peripheral nozzle structure through calcining furnace hopper 15, and by the heat calcining small particle size limestone material that peripheral burner 9 burnings produce, calcining temperature is 1000～1200 ℃, is sintered into lime.High temperature lime enters intermediate frequency furnace through calcining furnace outlet 11 and lime entrance 21 and makes slag former and flux.The part heat that the calcining furnace calcining produces is passed to coking reduction chamber 8 by the silicon carbide brick partition wall 7 between calcining furnace and the coking reduction chamber.Material in the coking reduction chamber utilizes the heat that heat that pelletizing brings from the roasting chamber and calcining furnace partition wall transmit to carry out pyrogenic reaction and reduction process, and the temperature of coking and reduction is 900～1100 ℃.To gas processing device, isolated coal tar wet goods liquid product continues processing to the coal tar naphtha processing unit (plant) through cooking gas outlet 16 for the coking that coking and reduction process produce and reducing gas.Isolated gas is divided into two-way after treatment, and one the road makes fuel to the burning beam burner of roasting chamber, and fuel is made to the peripheral burner of calcining furnace in another road.After finishing coking and reduction, open the fire door 4 of coking reduction chamber, material be pushed into through pushing device smelt hopper 25, the intermediate frequency furnace entrance enters intermediate frequency furnace.Steelmaking process is carried out in the electro-induction equipment heating that starts intermediate frequency furnace, and the temperature of steel-making is 1800～2000 ℃.The furnace gas that steelmaking process produces is made reducing gas through reducing gas entrance 19 to coking reduction chamber 8.The slag of steel-making after finishing got rid of through slag notch 13, and the product molten steel is through molten steel outlet 22 postprocessing working procedures of coming out of the stove.
Embodiment 2
Another embodiment of the present invention is the form that 3 groups of roastings-coking reduction chamber is installed in parallel as shown in Figure 3.Coking reducing and smelting device is provided with 3 groups of roastings-coking reduction chamber, and roasting-coking reduction chamber comprises roasting chamber 2 and coking reduction chamber 8, roasting-corresponding its pelletizing distributor 5 in coking reduction chamber and coal dust distributor 6.Calcining furnace is positioned at the both sides of coking reduction chamber, and calcining furnace and the coking reduction alternate setting in chamber are silicon carbide brick partition wall 7 between calcining furnace and the coking reduction chamber, are used for the material of partition wall heating coking reduction chamber.The periphery burner is positioned at the front end of calcining compartment.Every group of roasting-corresponding intermediate frequency furnace 12 in coking reduction chamber.Cooking gas and the reducing gas of 3 coking reduction chamber generations together arrive gas processing device through cooking gas outlet 16, and isolated coal tar wet goods liquid product continues processing to the coal tar naphtha processing unit (plant).Isolated gas is divided into two-way after treatment, and one the road makes fuel to the burning beam burner of roasting chamber, and fuel is made to the peripheral burner 9 of calcining furnace in another road.The reductibility gas that the steel-making of intermediate frequency furnace process produces enters corresponding coking reduction chamber 8 through furnace gas export 20, reducing gas entrance 19.
Claims (12)
1. a coking reducing and smelting device comprises ironmaking equipment or steelmaking equipment, and described ironmaking equipment is blast furnace and blast furnace sinter equipment, and described steelmaking equipment comprises electric arc furnace or intermediate frequency furnace; Described blast furnace, blast furnace sinter equipment, intermediate frequency furnace and electric arc furnace are respectively equipped with opening for feed, slag notch (13), lime entrance (21), products export and furnace gas export (20), it is characterized in that: described coking reducing and smelting device is provided with roasting chamber (2), two calcining furnaces (10), coking reduction chamber and gas processing device (17); Described coking reduction chamber is provided with pelletizing distributor (5), coal dust distributor (6), pusher equipment, reducing gas entrance (19) and discharge port; Described calcining furnace is provided with calcining furnace hopper (15), opening for feed, calciner and calcining furnace outlet (11); Described roasting chamber (2) is provided with hopper (1), opening for feed, preheating section, heating zone and discharge port, and heating zone has combustion equipment; The discharge port of described roasting chamber is connected to coking reduction chamber (8) by pelletizing distributor (5), and the discharge port of coking reduction chamber is connected with ironmaking equipment or steelmaking equipment by smelting hopper (25); Described calcining furnace (10) is positioned at the both sides of coking reduction chamber, is provided with silicon carbide brick partition wall (7) between calcining furnace and the coking reduction chamber, and the calcining furnace outlet is connected to the lime entrance (21) of ironmaking equipment or steelmaking equipment; The furnace gas export of ironmaking equipment or steelmaking equipment (20) is connected with the reducing gas entrance (19) of coking reduction chamber, the cooking gas outlet (16) of described coking reduction chamber is connected to gas processing device (17), the gas exit of described gas processing device is divided into two-way, one the road is connected to the combustion equipment of roasting chamber, and another road is connected to the calciner of calcining furnace.
2. coking reducing and smelting device according to claim 1, it is characterized in that: described coking reduction chamber (8) is the body structure that an end is big, an end is little or the halfpace type structure that the upper end is little, the lower end is big, the big end of described body structure is provided with fire door (4), and the lower end of described halfpace structure is provided with fire door.
3. coking reducing and smelting device according to claim 1, it is characterized in that: described pusher equipment comprises pushing device (24), push rod (18) and push pedal (23), and pushing device is connected with push pedal by push rod.
4. coking reducing and smelting device according to claim 1 is characterized in that: described roasting chamber is girder structure, tube-in-tube structure, and the two thorax structures of stream or Xinhua's wheat Wurz structure.
5. coking reducing and smelting device according to claim 4, it is characterized in that: roasting chamber's heating zone of described girder structure is provided with 1～5 layer of burning beam (3), every layer of 1～5 burning beam, burning beam is provided with burner, and the gas exit of gas treatment equipment is connected to the fuel gas inlet of burning beam.
6. coking reducing and smelting device according to claim 4, it is characterized in that: be provided with combustion chamber, last inner core, following inner core and firebridge in the roasting chamber of described tube-in-tube structure, described combustion chamber is divided into upper and lower two-layer, every layer is provided with 3～8 combustion chambers, same layer combustion chamber evenly arranged, link to each other by firebridge between the upper and lower layer combustion chamber staggered arrangement, each combustion chamber and inner core.
7. coking reducing and smelting device according to claim 1, it is characterized in that: described calcining furnace is beam-type limekiln structure or peripheral nozzle structure or fluidizing furnace structure, and the calciner of described beam-type limekiln is burning beam, and burning beam is provided with burner; The calciner of described fluidizing furnace is fluidized-bed; The calciner of described peripheral burner is peripheral burner.
8. coking reducing and smelting device according to claim 1, it is characterized in that: described gas processing device (17) comprises oil-gas separator, coal tar collector, gas purifying equipment, heat-exchange equipment, cooling apparatus, pressure exerting device, water removal device, sweetener and decoking equipment.
9. coking reducing and smelting device according to claim 1, it is characterized in that: described device is provided with preheating chamber, and the calcining furnace hopper is connected with preheating chamber, and preheating chamber is connected with calcining furnace; Wingdale is calcined to calcining compartment after the preheating chamber preheating.
10. coking reducing and smelting device according to claim 1, it is characterized in that: described device is provided with 2 ~ 5 groups of roastings-coking reduction chamber, described roasting-coking reduction chamber comprises roasting chamber (2) and coking reduction chamber (8), roasting-corresponding its pelletizing distributor (5) in coking reduction chamber and coal dust distributor (6); Calcining furnace is positioned at the both sides of coking reduction chamber, calcining furnace and the coking reduction alternate setting in chamber; The every group of roasting-corresponding ironmaking equipment in coking reduction chamber or steelmaking equipment, perhaps 2 ~ 5 groups of roasting-coking reduction chamber ironmaking equipment of common correspondence or steelmaking equipments; Described device is provided with preheating chamber, and the calcining furnace hopper is connected with preheating chamber, and preheating chamber is connected with calcining furnace; Wingdale is calcined to calcining compartment after the preheating chamber preheating.
11. coking reducing and smelting device according to claim 7 is characterized in that: described peripheral burner is positioned at front end or the rear end of calcining compartment.
12. coking reducing and smelting device according to claim 10, it is characterized in that: when the common corresponding ironmaking equipment in 2 ~ 5 groups of roastings-coking reduction chamber or steelmaking equipment, described ironmaking equipment or steelmaking equipment bottom are provided with track, and ironmaking equipment or steelmaking equipment are mobile in orbit.
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| CN 201210246957 CN102787193B (en) | 2012-07-17 | 2012-07-17 | Coking reduction smelting device |
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| CN 201210246957 CN102787193B (en) | 2012-07-17 | 2012-07-17 | Coking reduction smelting device |
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| CN103146865B (en) * | 2013-03-29 | 2014-10-01 | 青岛理工大学 | Device and method for direct reduction and iron making of pyrolyzing tar based on biomass |
| CN104451163A (en) * | 2014-12-15 | 2015-03-25 | 湖南省加嘉锑业科技有限公司 | Heavy metal treatment device |
| CN113587632A (en) * | 2021-08-04 | 2021-11-02 | 张家港宏昌钢板有限公司 | Broken multifuel combustion stove |
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| US4553742A (en) * | 1983-12-01 | 1985-11-19 | Midrex International Bv Rotterdam, Zurich Branch | Apparatus for generating a reducing gas |
| AT385051B (en) * | 1986-08-07 | 1988-02-10 | Voest Alpine Ag | MILL PLANT AND METHOD FOR PRODUCING STEEL |
| CN100543149C (en) * | 2007-06-19 | 2009-09-23 | 夏忠仁 | Roasting melting reduction iron smelting method and device and raw material |
| CN201402044Y (en) * | 2009-05-08 | 2010-02-10 | 徐文军 | Integration device for sintering of electric furnace |
| CN101864505B (en) * | 2010-07-13 | 2011-09-28 | 贾会平 | Combined method and device for smelting reduction ironmaking |
| CN101921074B (en) * | 2010-08-31 | 2012-07-04 | 贾会平 | Beam-type limekiln |
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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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