CN202166334U - Smoke processing system of rotary hearth furnace - Google Patents
Smoke processing system of rotary hearth furnace Download PDFInfo
- Publication number
- CN202166334U CN202166334U CN201120231930XU CN201120231930U CN202166334U CN 202166334 U CN202166334 U CN 202166334U CN 201120231930X U CN201120231930X U CN 201120231930XU CN 201120231930 U CN201120231930 U CN 201120231930U CN 202166334 U CN202166334 U CN 202166334U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- temperature heat
- hearth furnace
- rotary hearth
- processing system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to a smoke processing system of a rotary hearth furnace, belonging to the technical field of waste gas processing devices. The system comprises a high temperature heat exchanger, a middle temperature heat exchanger and a dust remover which are orderly connected in sealing way through smoke pipelines, wherein the middle temperature heat exchanger and the dust remover are in sealing connection with the low temperature heat exchanger by the smoke pipelines; two low temperature heat exchangers are arranged in parallel; and cold air regulating devices is mounted on the smoke pipelines at the front and back of the low temperature heat exchanger. Compared with existing smoke processing system of the rotary hearth furnace, the smoke processing system of the rotary hearth furnace provided by the utility model is provided with an additional low temperature heat exchanger, and provided with the cold air regulating devices on the smoke pipelines at the front and back of the low temperature heat exchanger, so that the temperature of the smoke can be controlled by the low temperature heat exchanger to rapidly dropped, alkali metal chloride included in the smoke can be integrally considered by the low temperature heat exchanger to produce small granular adhering matters, and different devices of the system are hard to plug.
Description
Technical field
The utility model relates to the system and device that a kind of flue gas that rotary hearth furnace is produced is handled, and belongs to handle the exhaust device technical field.
Background technology
Can produce a large amount of solid waste that contains the metallurgical unacceptable harmful element composition of iron and steel in the Iron and Steel Production, solid waste often forms dust.Generally all contain metals such as zinc, lead in these dust, adopt the method for traditional sintering processes can make zinc, plumbous enrichment, cause furnace nodulation, influence smooth operation of furnace and can damage smelting equipment.Through tackling key problem for many years, developed the technology (production sponge iron) that coal-based rotary hearth furnace method reclaims harmful element in the dust both at home and abroad.Though this technology can be carried out high temperature reduction with iron in the dust and carbon, the zinc in the dust and other alkali metal etc. still can exist in the flue gas after the processing and be discharged, and not only cause severe environmental pollution, and cause the metal material waste.Therefore, need handle the discharging flue gas of rotary hearth furnace.
At present; Know that according to the applicant rotary hearth furnace flue gas being carried out Treatment Technology both at home and abroad is the technology with reference to Nippon Steel basically; The related smoke processing system equipment of this technology mainly is tightly connected through flue gas pipeline by heat exchanger, waste heat boiler, sack cleaner and forms; Wherein heat exchanger is used for the preheated burning air, and waste heat boiler is to utilize waste heat to form steam, and sack cleaner is used for flue gas ash removal and reclaims the secondary zinc oxide dust.But the frequent jams phenomenon often appears in this smoke processing system in actual use, and needing often stops production changes Device element.
The utility model content
The technical problem that the utility model will solve is to propose a kind of difficult obstruction and economic and practical rotary hearth furnace smoke processing system.
The utility model is that the technical scheme that solves the problems of the technologies described above proposition is: a kind of rotary hearth furnace smoke processing system; Comprise the high-temperature heat-exchanging, mid temperature heat exchanger and the deduster that are tightly connected successively through flue gas pipeline; Be sealedly connected with cryogenic heat exchanger through flue gas pipeline between said mid temperature heat exchanger and the deduster; Two of being set to be connected in parallel to each other of said cryogenic heat exchanger, the flue gas pipeline before and after the said cryogenic heat exchanger is provided with the cold wind adjusting device.
The inventor of the utility model is through field practice and a large amount of experiment find that the main cause that causes existing rotary hearth furnace smoke processing system to stop up is the alkali metal chloride that contains in the flue gas for a long time.Because the boiling point and the fusing point of alkali metal chloride are lower; Water imbibition is strong; When temperature was lower than 300 ℃, alkali metal chloride began to condense, and absorbed the moisture in the flue gas and deliquescence becomes hydrate; Hydrate combines to generate fine and close adhesive again with the secondary zinc oxide dust, the adhesive enrichment promptly causes flue gas system to stop up.
Based on above-mentioned discovery; The inventor of the utility model has designed above-mentioned rotary hearth furnace smoke processing system; The beneficial effect of this system is: increased cryogenic heat exchanger owing to compare existing rotary hearth furnace smoke processing system; And on the flue gas pipeline before and after the cryogenic heat exchanger, be provided with the cold wind adjusting device, and therefore can control the temperature Centralized of flue gas and carry out rapid cooling at cryogenic heat exchanger, condense thereby make the alkali metal chloride that contains in the flue gas concentrate on cryogenic heat exchanger; And under rapid cooling, only generate the adhesive of fine granularity, be difficult for stopping up each device of this system.In addition,, also can onlinely easily launch the backup cryogenic heat exchanger and change the cryogenic heat exchanger that has stopped up, not stop production thereby can not cause flue gas to handle even after long-time the use obstruction is arranged, and economic and practical.
The improvement of technique scheme is: said cryogenic heat exchanger by three sections each other in the lump heat-exchanging tube bundle of two strings form.Like this, can select the mode of one group, two groups, three groups work respectively according to the fluctuation of flue gas system air quantity, wind-warm syndrome, flexible operation not only, controllability is strong, and can control the flue-gas temperature of each section of system.
The further improvement of technique scheme is: said mid temperature heat exchanger is divided into overheated tube bank section of water and water steam-generating bank section, and is provided with rapping apparatus along said tube bank section both sides.Like this, can further avoid flue gas in mid temperature heat exchanger, to cause condensing obstruction because of the heat exchange tube wall temperature fluctuates.
The perfect of technique scheme is: said high-temperature heat-exchanging is a gas-to-gas heat exchanger, and said mid temperature heat exchanger and cryogenic heat exchanger all are air-water heat exchangers, and the water inlet of said mid temperature heat exchanger is connected with the delivery port of cryogenic heat exchanger.
Further improving of technique scheme is: said cold wind adjusting device is made up of blast pipe and control valve, and on flue gas pipeline, arranges ringwise.
Further improving again of technique scheme is: be connected with expansion chamber through flue gas pipeline before the said high-temperature heat-exchanging.
Description of drawings
Be described further below in conjunction with the rotary hearth furnace smoke processing system of accompanying drawing the utility model.
Fig. 1 is the composition sketch map of the utility model embodiment one rotary hearth furnace smoke processing system.
Fig. 2 is the composition sketch map of the utility model embodiment two rotary hearth furnace smoke processing systems.
The specific embodiment
Embodiment one
The rotary hearth furnace smoke processing system of present embodiment is as shown in Figure 1; Comprise the high-temperature heat-exchanging 1, mid temperature heat exchanger 2 and the deduster 3 that are tightly connected successively through flue gas pipeline; Between mid temperature heat exchanger 2 and deduster 3, be sealedly connected with cryogenic heat exchanger 4 through flue gas pipeline; Two of being set to be connected in parallel to each other of cryogenic heat exchanger 4 (can the using and the reserved), the flue gas pipeline of cryogenic heat exchanger 4 front and back is provided with cold wind adjusting device 5.
The cryogenic heat exchanger 4 of present embodiment preferably by three sections each other two strings heat-exchanging tube bundle in the lump form.Certainly, the cryogenic heat exchanger 4 of present embodiment also can be substituted by the heat-exchanging tube bundle of other versions and connection form (as in the lump a string).
The cold wind adjusting device 5 of present embodiment is made up of blast pipe and control valve, and preferably on flue gas pipeline, adopts and be circular layout, and can certainly be other arrangement forms.
The mid temperature heat exchanger 2 of present embodiment preferably is divided into overheated tube bank section of water and water steam-generating bank section, and is provided with rapping apparatus along its both sides.Certainly, the mid temperature heat exchanger 2 of present embodiment also can be other versions, also can not establish rapping apparatus or only establish rapping apparatus in a side.
In the present embodiment, what high-temperature heat-exchanging 1 adopted is gas-to-gas heat exchanger (prior art), and it is air-water heat exchanger (prior art) that mid temperature heat exchanger 2 all adopts with cryogenic heat exchanger 4; Wherein, preferably the water inlet of mid temperature heat exchanger 2 is connected with the delivery port of cryogenic heat exchanger 4.
Embodiment two
The rotary hearth furnace smoke processing system of present embodiment is perfect on embodiment one basis, improves part and is: before high-temperature heat-exchanging 1, be connected with expansion chamber 6 through flue gas pipeline.
The rotary hearth furnace smoke processing system of the utility model is not limited to above-mentioned each embodiment, and all employings are equal to the technical scheme that replacement forms, and all drop on the protection domain of the utility model requirement.
Claims (6)
1. rotary hearth furnace smoke processing system; Comprise the high-temperature heat-exchanging, mid temperature heat exchanger and the deduster that are tightly connected successively through flue gas pipeline; It is characterized in that: be sealedly connected with cryogenic heat exchanger through flue gas pipeline between said mid temperature heat exchanger and the deduster; Two of being set to be connected in parallel to each other of said cryogenic heat exchanger, the flue gas pipeline before and after the said cryogenic heat exchanger is provided with the cold wind adjusting device.
2. according to the said rotary hearth furnace smoke processing system of claim 1, it is characterized in that: said cryogenic heat exchanger by three sections each other in the lump heat-exchanging tube bundle of two strings form.
3. according to the said rotary hearth furnace smoke processing system of claim 2, it is characterized in that: said mid temperature heat exchanger is divided into overheated tube bank section of water and water steam-generating bank section, and is provided with rapping apparatus along said tube bank section both sides.
4. according to claim 1,2 or 3 said rotary hearth furnace smoke processing systems; It is characterized in that: said high-temperature heat-exchanging is a gas-to-gas heat exchanger; Said mid temperature heat exchanger and cryogenic heat exchanger all are air-water heat exchangers, and the water inlet of said mid temperature heat exchanger is connected with the delivery port of cryogenic heat exchanger.
5. according to the said rotary hearth furnace smoke processing system of claim 4, it is characterized in that: said cold wind adjusting device is made up of blast pipe and control valve, and on flue gas pipeline, arranges ringwise.
6. according to the said rotary hearth furnace smoke processing system of claim 5, it is characterized in that: be connected with expansion chamber through flue gas pipeline before the said high-temperature heat-exchanging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120231930XU CN202166334U (en) | 2011-07-04 | 2011-07-04 | Smoke processing system of rotary hearth furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120231930XU CN202166334U (en) | 2011-07-04 | 2011-07-04 | Smoke processing system of rotary hearth furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202166334U true CN202166334U (en) | 2012-03-14 |
Family
ID=45802153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120231930XU Expired - Fee Related CN202166334U (en) | 2011-07-04 | 2011-07-04 | Smoke processing system of rotary hearth furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202166334U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901367A (en) * | 2012-11-16 | 2013-01-30 | 重庆赛迪工业炉有限公司 | Preheater system for rotary hearth furnace |
| CN103063044A (en) * | 2013-01-17 | 2013-04-24 | 中国钢研科技集团有限公司 | Rotary hearth furnace flue gas waste heat utilization system and rotary hearth furnace flue gas waste heat utilization method |
| CN104344739A (en) * | 2014-10-21 | 2015-02-11 | 重庆赛迪工业炉有限公司 | Device and method for comprehensive recycling of heat energy in plate and strip processing line |
-
2011
- 2011-07-04 CN CN201120231930XU patent/CN202166334U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901367A (en) * | 2012-11-16 | 2013-01-30 | 重庆赛迪工业炉有限公司 | Preheater system for rotary hearth furnace |
| CN103063044A (en) * | 2013-01-17 | 2013-04-24 | 中国钢研科技集团有限公司 | Rotary hearth furnace flue gas waste heat utilization system and rotary hearth furnace flue gas waste heat utilization method |
| CN104344739A (en) * | 2014-10-21 | 2015-02-11 | 重庆赛迪工业炉有限公司 | Device and method for comprehensive recycling of heat energy in plate and strip processing line |
| CN104344739B (en) * | 2014-10-21 | 2017-02-01 | 重庆赛迪热工环保工程技术有限公司 | Device and method for comprehensive recycling of heat energy in plate and strip processing line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101195766B (en) | Coal gas anhydrous dust collecting equipment of revolving furnace and technique thereof | |
| CN103225834B (en) | Boiler smoke blowdown heat pump of recovering residual heat heating system and using method thereof | |
| CN201110561Y (en) | Boiler smoke discharging residual heat recovery energy-saving apparatus | |
| CN102876824A (en) | Method for guaranteeing high blast temperature by using blast furnace gas | |
| CN104165351A (en) | Emission reduction and energy conservation system without GGH | |
| CN202166334U (en) | Smoke processing system of rotary hearth furnace | |
| CN103292605A (en) | Flue gas waste heat recovery system of sintering machine tail | |
| CN205316352U (en) | RTO system with tail gas waste heat recovery function | |
| CN202993536U (en) | Coal-fired hot blast furnace set with waste heat boiler | |
| CN102305394A (en) | Coking furnace flue-gas waste-heat boiler | |
| CN202056856U (en) | System for recycling afterheat of flue gas through high-temperature coal economizer | |
| CN103983120A (en) | Bonding preventing method of smoke system of rotary hearth furnace process for treating metallurgical zinc-bearing dust | |
| CN201819192U (en) | Two-stage serial-parallel boiler tail heat exchanger | |
| CN202195706U (en) | Heat accumulating type waste heat recovery system | |
| CN201621973U (en) | Electric furnace flue gas waste heat recovery utilization device | |
| CN106765035A (en) | Improve SCR temperature of reactor system and device and method | |
| CN206247373U (en) | A kind of pipe heat exchanger residual neat recovering system | |
| CN107218591B (en) | A kind of externally arranged steam cooler system heating heat primary air | |
| CN203518639U (en) | Waste heat recovery unit for metallurgical rotary type lime kiln | |
| CN105833688B (en) | The energy-saving clean tapping equipment of coke oven underground flue gas | |
| CN201653168U (en) | Heat pipe type waste heat recovery special apparatus for high temperature high dust laden smoke in metallurgy furnace | |
| CN202284786U (en) | Boiler using waste heat of coking furnace flue gas | |
| CN109140492B (en) | Boiler smoke-wind coupling waste heat recovery system | |
| CN101995166A (en) | Metallurgical furnace dedusting waste heat recovery machine and method | |
| CN204648986U (en) | A kind of board-like pair of preheater process system for gas burning lime kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Anti-blockage rotary hearth furnace smoke processing system and method Effective date of registration: 20180328 Granted publication date: 20120314 Pledgee: Bank of Beijing, Limited by Share Ltd, Nanjing branch Pledgor: Jiangsu Research & Design Institute of Metallurgical Industry Co., Ltd. Registration number: 2018320000034 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190102 Granted publication date: 20120314 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210704 Granted publication date: 20120314 |
|
| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20180704 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |