CN204665948U - Nonferrous metal smelting furnace flue gas waste heat recovery and dust pelletizing system - Google Patents
Nonferrous metal smelting furnace flue gas waste heat recovery and dust pelletizing system Download PDFInfo
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- CN204665948U CN204665948U CN201520354180.3U CN201520354180U CN204665948U CN 204665948 U CN204665948 U CN 204665948U CN 201520354180 U CN201520354180 U CN 201520354180U CN 204665948 U CN204665948 U CN 204665948U
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- flue
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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
The utility model relates to a kind of nonferrous metal smelting furnace flue gas waste heat recovery and dust pelletizing system, it comprises through the first flue, the waste-heat recovery device that pre-duster is connected with smelting furnace exhaust opening, the outlet of waste-heat recovery device successively through after deduster, first air inducing unit is connected with chimney, it also comprises operating mode deduster of skimming, the door of skimming of smelting furnace, charge door and exhaust opening place are equipped with dust gathering arrester, each dust gathering arrester is connected to one second flue respectively by a point of flue, second flue connects operating mode deduster of skimming successively, second air inducing unit and chimney, smelting furnace exhaust opening is communicated with point flue timesharing of the first flue with the exhaust opening place of smelting furnace by a flue switching device shifter.This programme solves the problem that existing nonferrous metal smelting furnace energy consumption is high, dust pelletizing system equipment investment is large and operating cost is high.
Description
Technical field
The utility model relates to industrial furnace system, specifically a kind of nonferrous metal smelting furnace flue gas waste heat recovery and dust pelletizing system.
Background technology
At casting industry, various nonferrous metal smelting furnace is topmost energy consumption equipment, and the thermal efficiency of smelting furnace directly has influence on the unit production capacity energy consumption height of enterprise.But the exhaust gas temperature of a lot of smelting furnace is all higher, generally at 350 DEG C ~ 1000 DEG C, if fully can recycle smoke discharging residual heat, this brings very considerable energy-saving benefit by for enterprise.
Containing a large amount of flue dust in the flue gas of this type of smelting furnace discharge, after flue gas must carry out Environmental-protecting dust-removing process, could qualified discharge.Such smelting furnace adopts sack cleaner to carry out dedusting usually, but can not work under the high temperature conditions due to sack cleaner, and therefore, in order to reduce the flue-gas temperature entering deduster, the mode usually by being mixed into a large amount of cold wind is lowered the temperature.Being mixed into of a large amount of cold wind causes the type selecting parameter of deduster sharply to increase, and system initial cost and operating cost are significantly improved, and factory is also unwilling longtime running.
On the other hand, this type of smelting furnace does not all configure flue gas waste heat recovery apparatus usually, and high-temperature flue gas directly discharges, and a large amount of heat energy has been discharged in air.For minority in waste-heat recovery device front-end configuration the smelting furnace of deduster, because the deduster of heat resistant type mostly is cyclone dust collector etc., dedusting is not thorough, when smelting furnace exhaust gas temperature is higher, metallic particles containing a certain amount of semi-molten state in smoke evacuation, these metallic particles can stick on heating surface after running into heating surface, cause waste-heat recovery device to block, and affect the normal work of whole system.For this reason, in first flue gas dust-removal disclosed in CN 101539371 B and residual neat recovering system, flue gas enters deduster and waste-heat recovery device again through water-cooled flue, but water-cooled flue can take away many heats, reduces waste heat recovery efficiency.
In addition, smelting furnace operating condition is divided into nominal situation and operating mode of skimming, and the running time of operating mode of skimming is about 10% of nominal situation, and the exhaust gas volumn of nominal situation is about 20% ~ 30% of operating mode of skimming.Operating mode and the nominal situation separately process but smelting furnace is not skimmed by the dust pelletizing system of routine, but the flue gas of two kinds of operating modes is merged into row relax.It is excessive that this also result in dust pelletizing system type selecting, and investment is large, the problem that operating cost is high.
Utility model content
The purpose of this utility model is to provide a kind of nonferrous metal smelting furnace flue gas waste heat recovery and dust pelletizing system, and it can solve the problem that existing nonferrous metal smelting furnace energy consumption is high, dust pelletizing system equipment investment is large and operating cost is high.
The technical solution of the utility model is as follows:
A kind of nonferrous metal smelting furnace flue gas waste heat recovery and dust pelletizing system, comprise through the first flue, the waste-heat recovery device that pre-duster is connected with smelting furnace exhaust opening, the outlet of waste-heat recovery device successively through after deduster, first air inducing unit is connected with chimney, it also comprises operating mode deduster of skimming, the door of skimming of smelting furnace, charge door and exhaust opening place are equipped with dust gathering arrester, each dust gathering arrester is connected to one second flue respectively by a point of flue, second flue connects operating mode deduster of skimming successively, second air inducing unit and chimney, smelting furnace exhaust opening is communicated with point flue timesharing of the first flue with the exhaust opening place of smelting furnace by a flue switching device shifter.
Further, described pre-duster is air-cooled type cyclone dust collector or gravitational precipitator.
Further, operating mode of skimming described in deduster and rear deduster are sack cleaner or water dust scrubber.
Smelting furnace waste heat recovery and dedusting organically combine by this programme, be that enterprise brings economic benefit by waste heat recovery, after waste heat recovery simultaneously, flue-gas temperature is significantly reduced to rear end flue gas ash removal and creates condition, without the need to reducing flue-gas temperature by being mixed into a large amount of cold wind, equipment investment and operating cost are all significantly reduced.And the flue gas time-division processing of smelting furnace is skimmed operating mode and nominal situation generation, make the operating mode deduster of skimming of large energy consumption short for running time, and the pre-duster of low energy consumption and rear deduster long-play meet the dust removal requirement of nominal situation, greatly reduce operating cost and equipment cost compared with the dust pelletizing system of existing not divided working status, can reduce by the system power consumption of about 60%.
Accompanying drawing explanation
Fig. 1 is system construction drawing of the present utility model.
Description of reference numerals: 1-smelting furnace; 2-pre-duster; 3-waste-heat recovery device; Deduster after 4-; 5-first air inducing unit; 6-chimney; 7-first flue; 8-second flue; 9-skims operating mode deduster; 10-second air inducing unit; 11-skims door; 12-charge door; 13-exhaust opening; 14-flue switching device shifter; 15-dust gathering arrester; 16-divides flue.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model will be further described.
A kind of nonferrous metal smelting furnace flue gas waste heat recovery and dust pelletizing system, as shown in Figure 1, on the basis of existing technology, namely flue gas is discharged from the exhaust opening 13 of smelting furnace 1, successively through the first flue 7, pre-duster 2, waste-heat recovery device 3, after enter in air by chimney 6 after deduster 4, first air inducing unit 5, set up skim operating mode deduster 9 and flue network thereof.The door 11 of skimming of smelting furnace 1, charge door 12 and exhaust opening 13 place are equipped with dust gathering arrester 15, and a dust gathering arrester 15 is pooled to the second flue 8, second flue 8 by a point of flue 16 and is connected with chimney 6 through operating mode deduster 9, second air inducing unit 10 of skimming.Flue switching device shifter 14 is set at the exhaust opening 13 of smelting furnace 1, is communicated with point flue 16 at exhaust opening 13 place of the first flue 7 and smelting furnace 1 for timesharing.
The course of work of this programme when smelting furnace 1 nominal situation is: the flue gas that smelting furnace 1 now discharges is high-temperature flue gas, first flue gas enters pre-duster 2 and carries out pre-dust removal process, waste-heat recovery device 3 Mist heat recovering is entered after process, flue gas is lowered the temperature simultaneously, flue gas after cooling enters rear deduster 4 and carries out dust removal process, sends into chimney 6 discharge finally by the first air inducing unit 5.
The course of work of this programme when operating mode skimmed by smelting furnace 1 is: the flue gas that smelting furnace 1 now discharges is low-temperature flue gas, the flue gas that the door 11 of skimming of smelting furnace 1, charge door 12 and exhaust opening 13 are discharged is collected respectively through dust gathering arrester 15, after being collected to the second flue 8, deliver to operating mode deduster 9 of skimming and carry out dust removal process, send into chimney 6 finally by the second air inducing unit 10 and discharge.
The flue gas of discharging due to smelting furnace in this programme 1 is according to the separately process of operating mode point high/low temperature, thus in the selection of deduster, pre-duster 2 should be high temperature resistant type, the type such as air-cooled type cyclone dust collector or gravitational precipitator can be selected, metallic dust in flue gas can be filtered out, avoid high-temperature metal particle to be attached on waste-heat recovery device 3 and result in blockage.And the flue gas that operating mode of skimming is discharged and the flue-gas temperature that waste-heat recovery device 3 is discharged relatively low, so the range of choice of skim operating mode deduster 9 and rear deduster 4 is comparatively wide, can good dedusting effect be selected and the low sack cleaner of cost or water dust scrubber.
This case is in reality is gone into operation, and when smelting furnace 1 is under automatic control system is run, flue switching device shifter 14 can select the automation transfer valve that can communicate with automatic control system, and flue switching device shifter 14 is according to the exit flue of the automatic gating exhaust opening 13 of current working; In smelting furnace 1 operational system that automaticity is lower, flue switching device shifter 14 can be controlled to switch by people.The production time accounted for due to operating mode of skimming is less, and multiple stage smelting furnace 1 can share an operating mode deduster 9 of skimming, to reduce production cost.
Claims (3)
1. a nonferrous metal smelting furnace flue gas waste heat recovery and dust pelletizing system, comprise through the first flue, the waste-heat recovery device that pre-duster is connected with smelting furnace exhaust opening, the outlet of waste-heat recovery device successively through after deduster, first air inducing unit is connected with chimney, it is characterized in that: also comprise operating mode deduster of skimming, the door of skimming of smelting furnace, charge door and exhaust opening place are equipped with dust gathering arrester, each dust gathering arrester is connected to one second flue respectively by a point of flue, second flue connects operating mode deduster of skimming successively, second air inducing unit and chimney, smelting furnace exhaust opening is communicated with point flue timesharing of the first flue with the exhaust opening place of smelting furnace by a flue switching device shifter.
2. nonferrous metal smelting furnace flue gas waste heat recovery according to claim 1 and dust pelletizing system, is characterized in that: described pre-duster is air-cooled type cyclone dust collector or gravitational precipitator.
3. nonferrous metal smelting furnace flue gas waste heat recovery according to claim 1 and 2 and dust pelletizing system, is characterized in that: described in skim operating mode deduster and rear deduster be sack cleaner or water dust scrubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520354180.3U CN204665948U (en) | 2015-05-28 | 2015-05-28 | Nonferrous metal smelting furnace flue gas waste heat recovery and dust pelletizing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520354180.3U CN204665948U (en) | 2015-05-28 | 2015-05-28 | Nonferrous metal smelting furnace flue gas waste heat recovery and dust pelletizing system |
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| CN204665948U true CN204665948U (en) | 2015-09-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108480614A (en) * | 2018-05-02 | 2018-09-04 | 东莞市宇晨机械科技有限公司 | A kind of horizontal casting melting furnace smoke collecting device |
| CN111804111A (en) * | 2020-08-05 | 2020-10-23 | 北京高能时代环境技术股份有限公司 | Resourceful treatment system and method for waste incineration smoke dust |
| CN113418400A (en) * | 2021-06-10 | 2021-09-21 | 中色科技股份有限公司 | Aluminum smelting pot gas cleaning recovery unit |
-
2015
- 2015-05-28 CN CN201520354180.3U patent/CN204665948U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108480614A (en) * | 2018-05-02 | 2018-09-04 | 东莞市宇晨机械科技有限公司 | A kind of horizontal casting melting furnace smoke collecting device |
| CN111804111A (en) * | 2020-08-05 | 2020-10-23 | 北京高能时代环境技术股份有限公司 | Resourceful treatment system and method for waste incineration smoke dust |
| CN113418400A (en) * | 2021-06-10 | 2021-09-21 | 中色科技股份有限公司 | Aluminum smelting pot gas cleaning recovery unit |
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