CN201289318Y - Waste heat recovery from smelting reduction ironmaking in heat pipe type rotary hearth furnace and steam production apparatus - Google Patents
Waste heat recovery from smelting reduction ironmaking in heat pipe type rotary hearth furnace and steam production apparatus Download PDFInfo
- Publication number
- CN201289318Y CN201289318Y CNU2008201853707U CN200820185370U CN201289318Y CN 201289318 Y CN201289318 Y CN 201289318Y CN U2008201853707 U CNU2008201853707 U CN U2008201853707U CN 200820185370 U CN200820185370 U CN 200820185370U CN 201289318 Y CN201289318 Y CN 201289318Y
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- heat pipe
- heat
- steam
- feed water
- hearth furnace
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
A heat-pipe type waste heat recovering and steam generating device for smelting reduction iron-making of a rotary hearth furnace consists of a secondary combustion settling chamber (2), a steam superheater (6), a heat-pipe steam generator (8), a heat-pipe feed water preheater (10), a bag-type dust remover (12), a chimney (13) and a steam drum (20). The device is characterized in that one side of the outer wall of the secondary combustion settling chamber (2) is connected with an inlet (1), and the other side thereof is connected with an outlet (4) connected with a high-temperature flue (5); the steam superheater (6) and the heat-pipe steam generator (8) are arranged on the high-temperature flue (5); the heat-pipe steam generator adopts a heat pipe as a heat transfer element; a dust discharge tee (9) is arranged at the bottom end of the high temperature flue (5); and the heat-pipe feed water preheater (10), the bag type dust remover (12) and the chimney (13) are connected in sequence at a horizontal outlet of the dust discharge tee (9). The device has the advantages of high heat transfer efficiency, safety, reliability, small volume and convenient disassembly.
Description
Technical field
The utility model relates to metallurgy, energy-conserving and environment-protective field, the especially a kind of heat pipe-type rotary hearth furnace melting reduction ironmaking Waste Heat Recovery and the device that steams.
Background technology
Rotary hearth furnace melting reduction ironmaking is a metallurgical technology technology newly developed, and this technology has been saved coking and sintering two big links in traditional ironmaking.Being implemented in environmental protection, improving the energy resource structure of steel and iron industry and all will playing positive facilitation of melting and reducing technology to the lifting of economic benefit.But can produce a large amount of high temperature, high dust-laden exhaust gas in its production process, environmental pollution is serious, and a large amount of heats in the waste gas are wasted.Be badly in need of at present a kind of device that can fully recycle the waste gas that produces in the rotary hearth furnace melting reduction ironmaking processes, thereby reach the purpose of energy-saving and emission-reduction.
Summary of the invention
The purpose of this utility model is a kind of heat pipe-type rotary hearth furnace melting reduction ironmaking Waste Heat Recovery of design and the device that steams, to solve the high temperature that produces in the rotary hearth furnace melting reduction ironmaking new technology, the heat recovery problem of high dust-laden exhaust gas, by heat pipe and pipe thereof outer be light pipe or winding fin with and the multi-stage heat pipe steam generating system of combining form, produce 2.5MPa, the superheated steam below 450 ℃, and make high-temp waste gas after lowering the temperature by bag-type dusting and ash-transmission system qualified discharge.
The purpose of this utility model can reach by following measure:
A kind of heat pipe-type rotary hearth furnace melting reduction ironmaking Waste Heat Recovery and the device that steams, constitute by second-time burning expansion chamber 2, steam superheater 6, heat pipe steam generator 8, heat pipe feed water preheater 10, sack cleaner 12, chimney 13 and drum 20, outer wall one side that it is characterized in that described second-time burning expansion chamber 2 is connected with import 1, opposite side connects outlet 4, and outlet 4 connects high-temperature flue 5; High-temperature flue 5 is provided with steam superheater 6 and heat pipe steam generator 8, adopt heat pipe as heat transfer element in the heat pipe steam generator 8, high-temperature flue 5 bottoms are provided with ash discharge threeway 9, and the Horizontal Exit of ash discharge threeway 9 is connected with heat pipe feed water preheater 10, sack cleaner 12 and chimney 13 in turn; Drum 20 is connected with heat pipe feed water preheater 10 by waterpipe 19 and water out 18, and heat pipe feed water preheater 10 is provided with water inlet 17; Drum 20 is connected to form the loop by the part of steaming in tedge 22, down-comer 21 and the heat pipe steam generator 8; Drum 20 is connected with steam superheater (6) with jet chimney 24 by steam (vapor) outlet 23 successively.
Installing attemperator 7 in the middle of the described steam superheater 6, steam superheater 6 connects superheat steam pipeline 26 by superheated steam outlet 25.
The bottom of described second-time burning expansion chamber 2 is provided with sedimentation ash bucket 3, the bottom of heat pipe feed water preheater 10 is provided with heat pipe feed water preheater ash bucket 11, sack cleaner 12 bottoms are provided with sack cleaner ash bucket 14, transfer at sedimentation ash bucket 3, heat pipe feed water preheater ash bucket 11 and sack cleaner ash bucket 14 and are provided with ash conveying device 15.
Described second-time burning expansion chamber 2 sidewalls are provided with some air distributions and regulate mouth 27.
Heat pipe is multistage combined in the described heat pipe steam generator 8, and the waste gas flow area adopts the variable cross-section form; The wing height that the heat pipe pipe is outer can be adopted light pipe or twine fin or its combining form and fin is that 10 millimeters to 20 millimeters, pitch are 12 millimeters to 25 millimeters.
Described heat pipe feed water preheater 10 all adopts heat pipe as heat transfer element and for multistage combined, and the wing height that the heat pipe pipe is outer can be adopted light pipe or twine fin or its combining form and fin is that 10 millimeters to 20 millimeters, pitch are 12 millimeters to 25 millimeters.
Described sack cleaner 12 adopts big sack cleaner form.
All just be provided with in described steam superheater 6, heat pipe steam generator 8 and the heat pipe feed water preheater 10 blow, blowback online ash removal device.
Described ash conveying device 15 ends are provided with grey storehouse 16, and the ash of ash conveying device 15 bottom deposits adopts strength conveying or scraper plate machine to send into grey storehouse 16 and focuses on.
Described steam superheater 6 can adopt vertical or horizontally disposed; Heat pipe steam generator 8 adopts vertical layout with heat pipe feed water preheater 10 or becomes 5 degree to the squint of 90 degree angles to arrange with horizontal plane.
The utility model compared with prior art has following advantage:
1. use system and device, carry out waste-gas heat step by step and reclaim, and make the waste gas qualified discharge;
2. the heat pipe pipe adopts light pipe outward or twines fin in the device, or its combining form, has improved heat exchange efficiency, has reduced the metal consumptive material, improves the reliability of equipment;
3. the arrangement of heat pipe and layout are passed through the waste gas uniform flow in the equipment, reduce the deposition of dust at this, improve heat exchange efficiency;
4. in the system, each equipment is all established the positive and negative online ash removal device that blows for every grade, in time removes dust stratification;
5. after exhaust energy reclaims, waste gas is carried out bag-type dusting;
6. press superheated steam can drive the turbine unit during the system recoveries heat produces, also can carry out cogeneration or be incorporated into the power networks.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model.
Among the figure: 1, import, 2, the second-time burning expansion chamber, 3, the sedimentation ash bucket, 4, outlet, 5, high-temperature flue, 6, steam superheater, 7, attemperator, 8, heat pipe steam generator, 9, the ash discharge threeway, 10, the heat pipe feed water preheater, 11, heat pipe feed water preheater ash bucket, 12, sack cleaner, 13, chimney, 14, the sack cleaner ash bucket, 15, ash conveying device, 16, the ash storehouse, 17, water inlet, 18, water out, 19, waterpipe, 20, drum, 21, down-comer, 22, tedge, 23, steam (vapor) outlet, 24, jet chimney, 25, the superheated steam outlet, 26, superheat steam pipeline, 27, air distribution is regulated mouth.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described:
Outer wall one side of the second-time burning expansion chamber 2 of the heat pipe-type rotary hearth furnace melting reduction ironmaking Waste Heat Recovery and the device that steams is connected with import 1, and opposite side connects outlet 4, and outlet 4 connects high-temperature flue 5; High-temperature flue 5 is provided with steam superheater 6 and heat pipe steam generator 8, adopt heat pipe as heat transfer element in the heat pipe steam generator 8, high-temperature flue 5 bottoms are provided with ash discharge threeway 9, and the Horizontal Exit of ash discharge threeway 9 is connected with heat pipe feed water preheater 10, sack cleaner 12 and chimney 13 in turn; Drum 20 is connected with heat pipe feed water preheater 10 by waterpipe 19 and water out 18, and heat pipe feed water preheater 10 is provided with water inlet 17; Drum 20 is connected to form the loop by the part of steaming in tedge 22, down-comer 21 and the heat pipe steam generator 8; Drum 20 is connected with steam superheater 6 with jet chimney by steam (vapor) outlet 23 successively.
Heat pipe steam generator 8 produce in, low-pressure saturated steam need be in addition overheated through steam superheater 6, steam superheater adopts the two-stage tandem structure, middle installing attemperator 7 is to regulate the superheated steam outlet temperature.Steam superheater 6 connects superheat steam pipeline 26 by superheated steam outlet 25.
The bottom of second-time burning expansion chamber 2 is provided with sedimentation ash bucket 3, the bottom of heat pipe feed water preheater 10 is provided with heat pipe feed water preheater ash bucket 11, sack cleaner 12 bottoms are provided with sack cleaner ash bucket 14, transfer at sedimentation ash bucket 3, heat pipe feed water preheater ash bucket 11 and sack cleaner ash bucket 14 and are provided with ash conveying device 15.
Second-time burning expansion chamber 2 sidewalls are provided with some air distributions and regulate mouthfuls 27, are used for the control of second-time burning air distribution and temperature, and then realize that indirectly EGT can regulate control.
Heat pipe feed water preheater 10 adopts heat pipes as heat transfer element and be multistage combined, and it is that 10 millimeters to 20 millimeters, pitch are 12 millimeters to 25 millimeters that the heat pipe pipe adopts the wing height of light pipe or winding fin or its combining form and fin outward.Heat pipe is multistage combined in the heat pipe steam generator 8, and the waste gas flow area adopts the variable cross-section form; The heat pipe pipe adopts light pipe outward or twines fin or the wing height of its combining form and fin is that 10 millimeters to 20 millimeters, pitch are 12 millimeters to 25 millimeters.Sack cleaner 12 adopts big sack cleaner form.
All just be provided with in steam superheater 6, heat pipe steam generator 8 and the heat pipe feed water preheater 10 blow, blowback online ash removal device.Ash conveying device 15 ends are provided with grey storehouse 16, and the ash of ash conveying device 15 bottom deposits adopts strength conveying or scraper plate machine to send into grey storehouse 16 and focuses on.
Steam superheater 6 adopts vertical or horizontally disposed; Heat pipe steam generator 8 adopts vertical layout with heat pipe feed water preheater 10 or becomes 5 degree to the squint of 90 degree angles to arrange with horizontal plane.
The heat pipe bringing-up section of heat transfer element absorbs heat in the heat pipe steam generator 8 in high-temperature flue 5, according to the heat exchange amount of calculating every heat extraction pipe, regulate the through-put power of every heat extraction pipe, and press the uniform flow principle, choose suitable heat pipe structure form, therefore form the combining form of many specifications.The single damage of heat pipe does not influence overall operation, has improved the equipment reliability of operation.
The utility model working method is as follows:
High-temp waste gas enters second-time burning expansion chamber 2 by import 1, through burning fully and delay, the ash fall that granularity is big in the waste gas is to sedimentation ash bucket 3 rows for the treatment of, waste gas by export 4 enter high-temperature flue 5 after, the steam superheater 6 of flowing through successively, 6 fens two-stage series connections of steam superheater, centre can be installed attemperator 7 to regulate superheat steam temperature; High-temp waste gas, discharges by chimney 13 after bottom ash discharge threeway 9 enters follow-up heat pipe feed water preheater 10 and sack cleaner 12 then by multi-stage heat pipe steam generator 8 then.Can store certain cigarette ash in sedimentation ash bucket 3, ash discharge threeway 9, heat pipe feed water preheater ash bucket 11 and the sack cleaner ash bucket 14.After cigarette ash fell into ash conveying device 15, the ash of ash conveying device 15 bottom deposits adopted strength conveying or scraper plate machine to send into grey storehouse 16 and focuses on.
Deaerated water enters heat pipe feed water preheater 10 by water inlet 17, send into drum 20 by water out 18 through feedwater piping 19 after the preheating, form the system of steaming by down-comer 21 and the tedge 22 that links to each other with drum 20 with heat pipe steam generator 8, in drum 20, carry out carbonated drink separation, obtain saturated vapor, through steam (vapor) outlet 23, it is overheated after superheated steam outlet 25 enters superheat steam pipeline 26 to enter steam superheater 6 by jet chimney 24.The system of steaming adopts Natural Circulation.
The utility model carries out waste heat recovery and dedusting with the waste gas more than 1200 ℃ that produces in the rotary hearth furnace reduction iron-making production, makes it temperature and drops to below 180 ℃ qualified discharge after the dedusting.
Claims (10)
1. the heat pipe-type rotary hearth furnace melting reduction ironmaking Waste Heat Recovery and the device that steams, constitute by second-time burning expansion chamber (2), steam superheater (6), heat pipe steam generator (8), heat pipe feed water preheater (10), sack cleaner (12), chimney (13) and drum (20), outer wall one side that it is characterized in that described second-time burning expansion chamber (2) is connected with import (1), opposite side connects outlet (4), and outlet (4) connects high-temperature flue (5); High-temperature flue (5) is provided with steam superheater (6) and heat pipe steam generator (8), adopt heat pipe as heat transfer element in the heat pipe steam generator (8), high-temperature flue (5) bottom is provided with ash discharge threeway (9), and the Horizontal Exit of ash discharge threeway (9) is connected with heat pipe feed water preheater (10), sack cleaner (12) and chimney (13) in turn; Drum (20) is connected with heat pipe feed water preheater (10) by waterpipe (19) and water out (18), and heat pipe feed water preheater (10) is provided with water inlet (17); Drum (20) is connected to form the loop by the part of steaming in tedge (22), down-comer (21) and the heat pipe steam generator (8); Drum (20) is connected with steam superheater (6) with jet chimney (24) by steam (vapor) outlet (23) successively.
2. the heat pipe-type rotary hearth furnace melting reduction ironmaking Waste Heat Recovery according to claim 1 and the device that steams, it is characterized in that installing attemperator (7) in the middle of the described steam superheater (6), steam superheater (6) connects superheat steam pipeline (26) by superheated steam outlet (25).
3. the heat pipe-type rotary hearth furnace melting reduction ironmaking Waste Heat Recovery according to claim 1 and the device that steams, the bottom that it is characterized in that described second-time burning expansion chamber (2) is provided with sedimentation ash bucket (3), the bottom of heat pipe feed water preheater (10) is provided with heat pipe feed water preheater ash bucket (11), sack cleaner (12) bottom is provided with sack cleaner ash bucket (14), transfers at sedimentation ash bucket (3), heat pipe feed water preheater ash bucket (11) and sack cleaner ash bucket (14) and is provided with ash conveying device (15).
4. the heat pipe-type rotary hearth furnace melting reduction ironmaking Waste Heat Recovery according to claim 1 and the device that steams is characterized in that described second-time burning expansion chamber (2) sidewall is provided with some air distributions and regulates mouthful (27).
5. the heat pipe-type rotary hearth furnace melting reduction ironmaking Waste Heat Recovery according to claim 1 and the device that steams, it is characterized in that described steam superheater (6) and heat pipe feed water preheater (10) all adopt heat pipe as heat transfer element and for multistage combined, it is that 10 millimeters to 20 millimeters, pitch are 12 millimeters to 25 millimeters that heat pipe adopts the wing height of light pipe, finned tube or its combining form and fin.
6. the heat pipe-type rotary hearth furnace melting reduction ironmaking Waste Heat Recovery according to claim 1 and the device that steams is characterized in that heat pipe is multistage combined in the described heat pipe steam generator (8); It is that 10 millimeters to 20 millimeters, pitch are 12 millimeters to 25 millimeters that heat pipe adopts the wing height of light pipe, finned tube or its combining form and fin.
7. the heat pipe-type rotary hearth furnace melting reduction ironmaking Waste Heat Recovery according to claim 1 and the device that steams is characterized in that described sack cleaner (12) adopts big sack cleaner form.
8. the heat pipe-type rotary hearth furnace melting reduction according to claim 1 ironmaking Waste Heat Recovery and the device that steams, it is characterized in that all just being provided with in described steam superheater (6), heat pipe steam generator (8) and the heat pipe feed water preheater (10) blow, blowback online ash removal device.
9. the heat pipe-type rotary hearth furnace melting reduction ironmaking Waste Heat Recovery according to claim 3 and the device that steams, it is characterized in that described ash conveying device (15) end is provided with grey storehouse (16), the ash of ash conveying device (15) bottom deposit adopts strength conveying or scraper plate machine to send into grey storehouse (16) and focuses on.
10. the heat pipe-type rotary hearth furnace melting reduction ironmaking Waste Heat Recovery according to claim 1 and the device that steams is characterized in that described steam superheater (6) can adopt level or vertical layout; Heat pipe steam generator (8) adopts vertical layout with heat pipe feed water preheater (10) or becomes 5 degree to the squint of 90 degree angles to arrange with horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201853707U CN201289318Y (en) | 2008-09-28 | 2008-09-28 | Waste heat recovery from smelting reduction ironmaking in heat pipe type rotary hearth furnace and steam production apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201853707U CN201289318Y (en) | 2008-09-28 | 2008-09-28 | Waste heat recovery from smelting reduction ironmaking in heat pipe type rotary hearth furnace and steam production apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN201289318Y true CN201289318Y (en) | 2009-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201853707U Expired - Lifetime CN201289318Y (en) | 2008-09-28 | 2008-09-28 | Waste heat recovery from smelting reduction ironmaking in heat pipe type rotary hearth furnace and steam production apparatus |
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| CN (1) | CN201289318Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221191A (en) * | 2011-04-01 | 2011-10-19 | 山东万盛环保科技发展有限公司 | Secondary steam generator |
| CN102679751A (en) * | 2012-05-30 | 2012-09-19 | 无锡锡能锅炉有限公司 | Organic heat carrier waste-heat furnace and waste-heat furnace system |
| CN105352335A (en) * | 2015-12-12 | 2016-02-24 | 马钢(集团)控股有限公司 | Zinc dust recycling device for heat exchangers of zinc-bearing dust and sludge treatment rotary hearth furnace |
| CN105465768A (en) * | 2015-12-25 | 2016-04-06 | 力聚热力设备科技有限公司 | Superheated steam generator |
-
2008
- 2008-09-28 CN CNU2008201853707U patent/CN201289318Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221191A (en) * | 2011-04-01 | 2011-10-19 | 山东万盛环保科技发展有限公司 | Secondary steam generator |
| CN102679751A (en) * | 2012-05-30 | 2012-09-19 | 无锡锡能锅炉有限公司 | Organic heat carrier waste-heat furnace and waste-heat furnace system |
| CN105352335A (en) * | 2015-12-12 | 2016-02-24 | 马钢(集团)控股有限公司 | Zinc dust recycling device for heat exchangers of zinc-bearing dust and sludge treatment rotary hearth furnace |
| CN105465768A (en) * | 2015-12-25 | 2016-04-06 | 力聚热力设备科技有限公司 | Superheated steam generator |
| CN105465768B (en) * | 2015-12-25 | 2017-11-24 | 力聚热力设备科技有限公司 | A kind of superheated steam generator |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090812 |
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| CX01 | Expiry of patent term |