CN208649365U - A kind of steel ingot refinement waste heat recovery device - Google Patents

A kind of steel ingot refinement waste heat recovery device Download PDF

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Publication number
CN208649365U
CN208649365U CN201820937616.5U CN201820937616U CN208649365U CN 208649365 U CN208649365 U CN 208649365U CN 201820937616 U CN201820937616 U CN 201820937616U CN 208649365 U CN208649365 U CN 208649365U
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CN
China
Prior art keywords
tube body
hot
waste heat
steel ingot
heat recovery
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Expired - Fee Related
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CN201820937616.5U
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Chinese (zh)
Inventor
陈华业
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Hualin Special Steel Group Co Ltd
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Hualin Special Steel Group Co Ltd
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Priority to CN201820937616.5U priority Critical patent/CN208649365U/en
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Expired - Fee Related legal-status Critical Current
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Abstract

The utility model relates to steel ingot refinement techniques, more particularly to a kind of steel ingot refines waste heat recovery device, it is poor with the waste-heat recovery device conduction efficiency for solving the problems, such as traditional, including smelting furnace and hot-blast stove, smelting furnace is divided into three stage structure from top to bottom: feeding warehouse, middle connection body and reaction furnace chamber, chimney is equipped with around middle connection body, it further include high pressure blower and thermal conductive metal pipe, hot-blast stove is connected to by hot air pipe with furnace cavity bottom is reacted, thermal conductive metal pipe integrally includes two sections of the front and back tube body of connection: the first tube body is coiled in chimney in bending, second tube body is arranged in the side wall of reaction furnace chamber and surrounding is equipped with integrated thermally conductive sheet, first tube body is connect with high pressure blower, second tube body is connect with hot-blast stove;The waste heat of smelting furnace is directly conducted the hot high pressure air-flow to thermal conductive metal pipe by the utility model, and air-heater is assisted to send furnace back to, and such frame mode, which needs to suck normal temperature air relative to traditional hot-blast stove, can directly reduce the energy consumption of hot-blast stove.

Description

A kind of steel ingot refinement waste heat recovery device
Technical field
The present invention relates to steel ingot refinement techniques more particularly to a kind of steel ingot to refine waste heat recovery device.
Background technique
The modern times ironmaking overwhelming majority uses blast furnace ironmaking, uses direct reduction iron making and electrometal furnace process individually.Steel-making The sponge iron and steel scrap that the pig iron and direct reduction iron making being mainly smelt using blast furnace are smelt is raw materials, with different methods It is smelt steel.Its basic process of production is iron ore to be smelt the pig iron in iron-smelting furnace, then using the pig iron as raw material, differently refine Cheng Gang, then cast steel ingot or continuous casting billet.
Economy, a fuel-saving important way are being to provide for the heat recovery in steel ingot extractive process Diameter, with the development of novel economizer, energy-saving is that steel ingot refines the long-term strategic task of enterprise.Steel ingot in the prior art mentions Refine waste heat recovery device such as application No. is: the Chinese utility model patent of CN201620272327.9 provides one kind Waste heat recovery device, when carrying out steel ingot and refining heat recovery work, by smoke inlet interface by recovered flue gas Import steam cylinder, by main waste heat recycle cabinet carry out hot gas recycling gather, but in smelting process due to smelting The separation of furnace independence, and booster action cannot be played for entire smelting process;And steel ingot refinement is iron ore Smelt into the process of iron, main reaction principle is reacting using carbon monoxide and iron oxide, chemical formula be Fe2O3+3CO= 2Fe+3CO2, and current waste heat recovery device can not improve the efficiency of steel ingot refinement.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, adapt to reality and need, and provide a kind of steel ingot refinement waste heat Recycle device, it is poor with the waste-heat recovery device conduction efficiency for solving traditional, smelting process cannot be assisted after energy separation Problem.
In order to achieve the object of the present invention, the technical scheme adopted by the invention is as follows:
A kind of steel ingot refines waste heat recovery device, including smelting furnace and hot-blast stove, the smelting furnace from top to bottom according to Secondary to be divided into three stage structure: feeding warehouse, middle connection body and reaction furnace chamber are equipped with chimney around the middle connection body, also wrap Dust-extraction unit, high pressure blower and thermal conductive metal pipe are included, the chimney is discharged outside to by dust-extraction unit, and the hot-blast stove passes through Hot air pipe is connected to furnace cavity bottom is reacted, and the thermal conductive metal pipe integrally includes two sections of the front and back tube body of connection: the first tube body is in Bending is coiled in chimney, and the second tube body is arranged in the side wall of reaction furnace chamber and surrounding is equipped with integrated thermally conductive sheet, the first tube body It is connect with high pressure blower, the second tube body is connect with hot-blast stove.
It is more preferred;The steel ingot, which refines waste heat recovery device, also has carbon monoxide transducer, warning light And control system, the carbon monoxide transducer are arranged in chimney, the control system receives the number of carbon monoxide transducer According to, and control warning light or high pressure blower work.
It is more preferred;It is hollow cavity inside the thermal conductive metal pipe and is filled with special-shaped deflector.
It is more preferred;The deflector forms honeycomb entirety by several irregular flexible fluid-directing pieces.
It is more preferred;The flow deflector is connected with each other to form the water conservancy diversion air flue of hexagon.
It is more preferred;The side wall of the reaction furnace chamber is equipped with a circle hollow layer around integrated thermally conductive sheet, this is hollow The heat-insulating shield of silica wool material is provided in layer.
It is more preferred;The integrated thermally conductive sheet is formed by stacked spaced apart above and below rectangular copper sheet, the integrated thermally conductive sheet Center is equipped with the through-hole passed through for thermal conductive metal pipe.
It is more preferred;First pipe diameter of the thermal conductive metal pipe is greater than the second pipe diameter, first tube body With the second tube body by multiple-pass joint in a pair of multimodal connection.
Working principle: in steel ingot refinement, opening high pressure blower flows gas at normal temperature in thermal conductive metal pipe, and setting exists Second tube body of the first tube body and reaction furnace chamber side wall in chimney, which conducts waste heat to internal flow air-flow, forms high-pressure hot gas Stream flows out to hot-blast stove, which passes through hot air pipe again and the hot wind for meeting reaction environment requirement temperature is reentered reacting furnace It is intracavitary;Gas is discharged according to redox reaction it should be noted that joined carbon monoxide transducer acquisition in a preferred approach Carbonomonoxide concentration in body, and by data feedback to control system, control system judges whether redox reaction is abundant, when When carbonomonoxide concentration is more than setting value, the magnetic iron ore that explanation can react at this time is insufficient, and control system control instructions lamp is bright to be mentioned The worker that wakes up adds raw material into feeding warehouse, guarantees the abundant of reaction in furnace, when carbonomonoxide concentration is lower than setting value, at this point, control The bright prompting worker of indicator light processed adds coke, guarantees that generate enough CO is reacted with magnetite.
Beneficial effects of the present invention:
Relative to traditional waste-heat recovery device, this programme directly conducts the waste heat of smelting furnace to thermal conductive metal pipe Hot high pressure air-flow, and air-heater is assisted to send furnace back to, such frame mode needs to suck room temperature sky relative to traditional hot-blast stove Gas can directly reduce the energy consumption of hot-blast stove, and with numerous unique textures for improving conduction efficiency in the present apparatus: the first pipe Bending of the body using larger diameter and in chimney is coiled, the quantity of the second tube body is set as needed in the side of reaction furnace chamber The honeycomb structure of integrated thermally conductive sheet and deflector around wall, the second tube body is passed by increasing conductive contacts face to improve Efficiency is led, gas is because of vortex caused by high pressure in addition, the deflector of honeycomb structure also can be reduced in metal tube, in reacting furnace The side wall of chamber adds hollow layer and the structure design of heat-insulating shield passes through isolation furnace body and the extraneous loss for reducing waste heat, the first tube body Diameter between the second tube body, which is arranged and is connect while capable of guaranteeing a pair of of multi-connection by multiple-pass joint, also to be had surely Fixed flow velocity.
Detailed description of the invention
Fig. 1 is device overall structure diagram;
Fig. 2 is smelting furnace side elevational cross-section structure chart;
Fig. 3 is smelting furnace top view cross section structure chart;
Fig. 4 is thermal conductive metal pipe internal structure chart;
Fig. 5 is multiple-pass joint schematic diagram.
Appended drawing reference is as follows:
1. smelting furnace, 1-1. feeding warehouse, 1-2. middle connection body, 1-3. react furnace chamber, 1-4. hollow layer, 2. hot-blast stoves, 2-1. hot air pipe, 3. chimneys, 4. dust-extraction units, 5. high pressure blowers, 6. thermal conductive metal pipes, the first tube body of 6-1., 6-2. second are managed Body, 7. integrated thermally conductive sheets, the rectangular copper sheet of 7-1., 7-2. through-hole, 8. heat-insulating shields, 9. multiple-pass joints, 10. special-shaped deflectors, 10-1. Flexible fluid-directing piece, 11. water conservancy diversion air flues.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
Embodiment 1:
Such as Fig. 1 to 2, a kind of steel ingot refinement waste heat recovery device, including smelting furnace 1 and hot-blast stove 2, the smelting furnace It is divided into three stage structure from top to bottom: feeding warehouse 1-1, middle connection body 1-2 and reaction furnace chamber 1-3, the middle part connection Body two sides are equipped with chimney 3 upwards, further include dust-extraction unit 4, high pressure blower 5 and thermal conductive metal pipe 6, and the chimney 3 passes through dedusting Device 4 is discharged outside to, and the hot-blast stove 2 is connected to by hot air pipe 2-1 with the bottom furnace chamber 1-3 is reacted, the thermal conductive metal pipe 6 Whole includes two sections of the front and back tube body of connection: the first tube body 6-1 is coiled in chimney 3 in bending, and the second tube body 6-2 is arranged anti- It answers in the side wall of furnace chamber 1-3 and surrounding is equipped with integrated thermally conductive sheet 7, the first tube body 6-1 is connect with high pressure blower 5, the second tube body 6-2 It is connect with hot-blast stove 2.The side wall of the reaction furnace chamber 1-3 is equipped with one around integrated thermally conductive sheet 7 and encloses hollow layer 1-4, in this The heat-insulating shield 8 of silica wool material is provided in dead level 1-4;The integrated thermally conductive sheet 7 by rectangular copper sheet 7-1 or more stacked spaced apart and At the center of the integrated thermally conductive sheet 7 is equipped with the through-hole 7-2 passed through for thermal conductive metal pipe 6;First pipe of the thermal conductive metal pipe Body 6-1 diameter is greater than the second tube body 6-2 diameter, the first tube body 6-1 and the second tube body 6-2 by multiple-pass joint 9 in a pair Multimodal connection, such as Fig. 3 and Fig. 5, this figure integrates thermally conductive chip architecture for convenience of displaying, and reaction furnace chamber shape is at truncated cone-shaped, in Fig. 1 Reaction furnace chamber shape is prismatic table shape, and 6 integrated thermally conductive sheets, therefore corresponding second tube body is distributed with by Fig. 3 in this present embodiment It is also 6, and chimney quantity is 2, therefore corresponding first tube body is also 2, so the quantity of multiple-pass joint is one in Fig. 5 Suitable quantity can be arranged according to the size and chimney quantity of reaction furnace chamber in the design of big three small formula, actual site technology scheme The first tube body and the second tube body, and welded together by corresponding multiple-pass joint.It is hollow inside the thermal conductive metal pipe 6 Cavity and filled with special-shaped deflector 10;It is whole that the deflector by several irregular flexible fluid-directing piece 10-1 forms honeycomb Body;The flow deflector 10-1 is connected with each other to form the water conservancy diversion air flue 11 of hexagon, as shown in Figure 4.
Working principle: in steel ingot refinement, opening high pressure blower flows gas at normal temperature in thermal conductive metal pipe, and setting exists Second tube body of the first tube body and reaction furnace chamber side wall in chimney, which conducts waste heat to internal flow air-flow, forms high-pressure hot gas Stream flows out to hot-blast stove, which passes through hot air pipe again and the hot wind for meeting reaction environment requirement temperature is reentered reacting furnace It is intracavitary.
Embodiment 2:
The embodiment the difference from embodiment 1 is that;The steel ingot, which refines waste heat recovery device, also has an oxygen Change carbon sensor, warning light and control system, the carbon monoxide transducer is arranged in chimney, and the control system receives one The data of carbon sensor are aoxidized, and control warning light or high pressure blower work.
It joined the oxygen that carbon monoxide transducer acquisition is discharged in gas according to redox reaction in this embodiment Change concentration of carbon, and by data feedback to control system, control system judges whether redox reaction is abundant, when carbon monoxide is dense When degree is more than setting value, the magnetic iron ore that can react of explanation is insufficient at this time, the bright prompting worker of control system control instructions lamp into Add raw material in feed bin, guarantee the abundant of reaction in furnace, when carbonomonoxide concentration is lower than setting value, at this point, control system controls The bright prompting worker of indicator light adds coke, guarantees that generate enough CO is reacted with magnetite, above-mentioned indicator light can pass through control System processed controls its color to distinguish different states.
Relative to traditional waste-heat recovery device, this programme directly conducts the waste heat of smelting furnace to thermal conductive metal pipe Hot high pressure air-flow, and air-heater is assisted to send furnace back to, such frame mode needs to suck room temperature sky relative to traditional hot-blast stove Gas can directly reduce the energy consumption of hot-blast stove, and with numerous unique textures for improving conduction efficiency in the present apparatus: the first pipe Bending of the body using larger diameter and in chimney is coiled, the quantity of the second tube body is set as needed in the side of reaction furnace chamber The honeycomb structure of integrated thermally conductive sheet and deflector around wall, the second tube body is passed by increasing conductive contacts face to improve Efficiency is led, gas is because of vortex caused by high pressure in addition, the deflector of honeycomb structure also can be reduced in metal tube, in reacting furnace The side wall of chamber adds hollow layer and the structure design of heat-insulating shield passes through isolation furnace body and the extraneous loss for reducing waste heat, the first tube body Diameter between the second tube body, which is arranged and is connect while capable of guaranteeing a pair of of multi-connection by multiple-pass joint, also to be had surely Fixed flow velocity.
What the embodiment of the present invention was announced is preferred embodiment, and however, it is not limited to this, the ordinary skill people of this field Member, easily according to above-described embodiment, understands spirit of the invention, and make different amplification and variation, but as long as not departing from this The spirit of invention, all within the scope of the present invention.

Claims (8)

1. a kind of steel ingot refines waste heat recovery device, including smelting furnace and hot-blast stove, the smelting furnace is from top to bottom successively Be divided into three stage structure: feeding warehouse, middle connection body and reaction furnace chamber are equipped with chimney, feature around the middle connection body It is, further includes dust-extraction unit, high pressure blower and thermal conductive metal pipe, the chimney is discharged outside to by dust-extraction unit, described Hot-blast stove is connected to by hot air pipe with furnace cavity bottom is reacted, and the thermal conductive metal pipe integrally includes two sections of the front and back tube body of connection: First tube body is coiled in chimney in bending, and the second tube body is arranged in the side wall of reaction furnace chamber and surrounding is thermally conductive equipped with integrating Piece, the first tube body are connect with high pressure blower, and the second tube body is connect with hot-blast stove.
2. steel ingot as described in claim 1 refines waste heat recovery device, it is characterised in that;The steel ingot refines waste heat Recycle device also has carbon monoxide transducer, warning light and control system, and the carbon monoxide transducer is arranged in cigarette In chimney, the control system receives the data of carbon monoxide transducer, and controls warning light work.
3. steel ingot as described in claim 1 refines waste heat recovery device, it is characterised in that;Inside the thermal conductive metal pipe For hollow cavity and filled with special-shaped deflector.
4. steel ingot as claimed in claim 3 refines waste heat recovery device, it is characterised in that;The deflector is by several It is whole that irregular flexible fluid-directing piece forms honeycomb.
5. steel ingot as claimed in claim 4 refines waste heat recovery device, it is characterised in that;The flow deflector is connected with each other Form the water conservancy diversion air flue of hexagon.
6. steel ingot as described in claim 1 refines waste heat recovery device, it is characterised in that;The side wall of the reaction furnace chamber It is equipped with a circle hollow layer around integrated thermally conductive sheet, the heat-insulating shield of silica wool material is provided in the hollow layer.
7. steel ingot as described in claim 1 refines waste heat recovery device, it is characterised in that;The integrated thermally conductive sheet is by side Stacked spaced apart forms shape copper sheet up and down, and the center of the integrated thermally conductive sheet is equipped with the through-hole passed through for thermal conductive metal pipe.
8. steel ingot as described in claim 1 refines waste heat recovery device, it is characterised in that;The of the thermal conductive metal pipe One pipe diameter is greater than the second pipe diameter, first tube body and the second tube body by multiple-pass joint in a pair of multimodal connection.
CN201820937616.5U 2018-06-18 2018-06-18 A kind of steel ingot refinement waste heat recovery device Expired - Fee Related CN208649365U (en)

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Application Number Priority Date Filing Date Title
CN201820937616.5U CN208649365U (en) 2018-06-18 2018-06-18 A kind of steel ingot refinement waste heat recovery device

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Application Number Priority Date Filing Date Title
CN201820937616.5U CN208649365U (en) 2018-06-18 2018-06-18 A kind of steel ingot refinement waste heat recovery device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110512050A (en) * 2019-09-23 2019-11-29 九江华林实业有限公司 Waste-heat recovery device is used in a kind of refinement of steel ingot

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110512050A (en) * 2019-09-23 2019-11-29 九江华林实业有限公司 Waste-heat recovery device is used in a kind of refinement of steel ingot

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Granted publication date: 20190326

Termination date: 20200618