CN102538493B - Device for using waste heat of high-temperature smoke of bath smelting furnace directly - Google Patents
Device for using waste heat of high-temperature smoke of bath smelting furnace directly Download PDFInfo
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- CN102538493B CN102538493B CN201210033346.2A CN201210033346A CN102538493B CN 102538493 B CN102538493 B CN 102538493B CN 201210033346 A CN201210033346 A CN 201210033346A CN 102538493 B CN102538493 B CN 102538493B
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- smelting furnace
- flue
- rotary kiln
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- trapping device
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Abstract
The invention discloses a device for using waste heat of high-temperature smoke of a bath smelting furnace directly. The device comprises a smelting furnace flue, a transfer flue, a rotary kiln and a solid material heat exchanging and dust collecting device, wherein the smelting furnace flue is connected with a rotary kiln head through the transfer flue; the tail of the rotary kiln is connected with the solid material heat exchanging and dust collecting device through a low-temperature flue; and a discharge port of the solid material heat exchanging and dust collecting device is connected with a feed port of the rotary kiln through a low-temperature storage bin. By the device, the high-temperature smoke of the oxygen-enriched side-blown bath smelting furnace is used as a working heat source of the rotary kiln directly, heat of the low-temperature smoke at the tail of the rotary kiln is recycled by the solid material heat exchanging and dust collecting device for preheating materials, and heat energy is recycled and part of smoke dust is collected further. The device is simple in structure, is easy and convenient to operate, is stable and reliable in process running and is low in investment cost for transformation. By recycling the high-temperature smoke of the bath smelting furnace and the low-temperature smoke of the rotary kiln directly, the use ratio of the heat energy is improved by over 20 percent, and the device accords with the national industrial policy and is particularly suitable for industrial upgrading and technical transformation of medium-sized and small enterprises.
Description
Technical field
The invention belongs to non-ferrous metal metallurgy technical field, further belong to bath smelting metallurgical technology field, be specifically related to after a kind of high-temperature flue gas recycling of bath smelting furnace generation, feed back in bath smelting technique and recycle, directly reduce the high-temperature smoke of bath smelting furnace waste heat direct-utilizing device that primary fuel consumes.
Background technology
There are tens of slicker solder smelting enterprises inventor location, because being all mostly adopts comparatively backward Gu wind furnace refining splicer's skill or electric furnace tin-smelting technique, because environmental pollution is large, technique falls behind or energy consumption is higher faces the danger being eliminated, enterprise is badly in need of undergoing technological transformation and industrial upgrading.Through investigation, molten pool melting technology should be as the first-selection of these enterprises.At present, molten pool melting technology has been successfully applied to plumbous smelting industry in China, flue-gas temperature higher (approximately 950 ℃ ~ 1050 ℃) due to bath smelting furnace, dust rate high (10 ~ 15%), need to recycle waste heat and flue dust, but the waste heat recovery of current all bath smelting furnaces still adopts Waste Heat Generation or producing steam, not only equipment investment is higher when generating electricity, also higher to operator's requirement, and thermal energy conversion efficiency is lower.The more important thing is according to current national industrial policies, the little power station of providing for oneself of enterprise will be connected to the grid, the very complicated reason more difficult to manage of formality, on the other hand, most of smelting enterprises production technology does not need steam, and the steam that waste heat boiler is produced is good utilisation not also, is not still suitable for these enterprises.In more molten pool melting technology, oxygen-enriched side-blowing bath melting technique due to have investment relatively little, can miniaturization, the feature such as simple to operate, applicable medium-sized and small enterprises are carried out to upgrading.More domestic areas and enterprise are successfully applied to refine plumbous industry by oxygen-enriched side-blowing bath melting technique, it still adopts generating or producing steam to the recovery of waste heat at present, because of these small enterprises, do not need steam again, and be unfavorable for this technology applying at medium-sized and small enterprises.But, if the high-temperature flue gas to oxygen-enriched side-blown bath smelting is not used, the production cost of enterprise will be because of energy consumption compared with high and unreasonable, therefore, and for take slicker solder smelting as main medium-sized and small enterprises, need to develop a kind of investment less, simple to operate, good energy-conserving effect, is applicable to again the energy-saving practical technology that these smelting enterprises produce Liquified gas tanker, supporting with oxygen-enriched side-blowing bath melting technique, be more conducive to oxygen-enriched side-blowing bath melting technique applying at medium-sized and small enterprises.
Summary of the invention
The object of the present invention is to provide a kind of simple process, working stability is reliable, the high-temperature flue gas that bath smelting furnace can be produced directly, as the work thermal source of rotary kiln, reduces the high-temperature smoke of bath smelting furnace waste heat direct-utilizing device that rotary kiln primary fuel consumes.
The object of the present invention is achieved like this, comprises smelting furnace flue, switching flue, rotary kiln, admittedly expects heat exchange dust trapping device, and smelting furnace flue is connected with revolution kiln hood by switching flue; Described rotary kiln afterbody is connected and is admittedly expected heat exchange dust trapping device by low temperature flue, admittedly expect that heat exchange dust trapping device discharging opening is connected with rotary kiln charging aperture by low temperature feed bin.
The present invention directly as the work thermal source of rotary kiln, and utilizes the high-temperature flue gas of oxygen-enriched side-blown bath smelting admittedly to expect that the heat that heat exchange dust trapping device reclaims rotary kiln afterbody low-temperature flue gas carries out preheating to material, the part of collecting simultaneously flue dust.The present invention is simple in structure, easy and simple to handle, and process operation is reliable and stable, and cost of investment is low.Not only the heat energy of the high-temperature flue gas of oxygen-enriched side-blown bath smelting is directly recycled, also changed nonferrous metallurgy industry for a long time that low-temperature flue gas is cold by table, low-temperature heat quantity is dispersed into the present situation not reclaimed in atmosphere, heat energy utilization efficiency improves more than 20%, good energy-conserving effect reduces the discharge of flue dust simultaneously.The present invention meets national industrial policies, can meet the needs of middle-size and small-size heat recovery, is specially adapted to the industrial upgrading of medium-sized and small enterprises and technological transformation.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is for admittedly expecting heat exchange dust trapping device overall structure half sectional view;
In figure: 1-smelting furnace flue, 2-measuring chute, 3-high temperature feed bin, 4-workbench, the 5-flue of transferring, 6-turns round kiln hood, 7-rotary kiln, 8-low temperature flue, 9-expects heat exchange dust trapping device admittedly, 91-charging aperture, 92-mandrel, 93-supporting seat, 94-distributing device, the 95-heat exchanger plates that overturns, 96-returning face plate support, 97-moving tooth bar, 10-exhaust tube, 11-low temperature feed bin, 12-kiln tail expansion chamber, 13-turns round roller, 14-mating surface, 15-observation window.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated, but never in any form the present invention is limited, and any change or the improvement based on training centre of the present invention, done, all belong to protection scope of the present invention.
As shown in Figure 1, 2, the present invention includes smelting furnace flue 1, switching flue 5, rotary kiln 7, admittedly expect heat exchange dust trapping device 9, smelting furnace flue 1 is connected with revolution kiln hood 6 by switching flue 5; Described rotary kiln 7 afterbodys are connected and are admittedly expected heat exchange dust trapping device 9 by low temperature flue 8, admittedly expect that heat exchange dust trapping device 9 discharging openings are connected with rotary kiln 7 charging apertures by low temperature feed bin 11.
Described smelting furnace switching flue (5) is removable overall structure with revolution kiln hood (6), by the roller on support and support, be connected with workbench (4), the upper track arranging of described workbench (4) matches with the revolution roller (13) of revolution kiln hood (6) support lower end with switching flue (5).
The mating surface of described smelting furnace flue 1 and switching flue 5 is for outwards moving the direction inclined-plane of 2 ~ 3 ° that tilts, so as to install or during maintenance both decomposition with coordinate.
Described revolution kiln hood 6 blanking ports are connected with bath smelting furnace charge door by high temperature feed bin 3, measuring chute 2 successively.The mating surface of described revolution kiln hood (6) blanking port and high temperature feed bin (3) charging aperture is for outwards moving the direction inclined-plane of 2 ~ 3 ° that tilts, so as to install or during maintenance both decomposition with coordinate.
Described high temperature feed bin 3 inwalls arrange refractory material lining, and its capacity is no less than 2 times an of inlet amount of bath smelting furnace.
Described measuring chute 2 outer setting adiabator layers, its capacity equals inlet amount of bath smelting furnace.
Described low temperature feed bin 11 outer setting adiabator layers, its capacity is no less than 5 times an of inlet amount of bath smelting furnace.
Describedly admittedly expect that heat exchange dust trapping device 9 is for cylinder cone bottom structure, admittedly expect that heat exchange dust trapping device 9 cone bottom outlets connect low temperature feed bins 11.
Described low temperature flue 8 is tangentially communicated with solid material heat exchange dust trapping device 9 cylindrical portion bottoms; Described exhaust tube 10 is tangentially communicated with solid material heat exchange dust trapping device 9 cylindrical portion tops.
As shown in Figure 3, described solid material heat exchange dust trapping device 9 centers longitudinally arrange mandrel 92, and top arranges charging aperture 91, on described mandrel 92, corresponding to charging aperture 91 belows, distributing device 94 is set.
Supporting seat 93 on described solid material heat exchange dust trapping device 9 inwalls arranges returning face plate support 96, and returning face plate support 96 arranges upset plate package 95.
The fluted disc that described upset plate package 95 is stirred on upset heat exchanger plates by the driving lever 97 arranging on mandrel 92 is realized upset.
Operation principle of the present invention and the course of work:
From the high-temperature flue gas (approximately 950 ~ 1050 ℃) of oxygen-enriched side-blown bath smelting, by switching flue, directly introduce in rotary kiln the work thermal source to heating material as rotary kiln, material is the mass-and heat-transfer process of process from low-temperature space to high-temperature region in rotary kiln, progressively in rotary kiln, be heated, while arriving revolution kiln hood, be heated to approximately 300 ~ 350 ℃, then by blanking port, enter high temperature feed bin.When oxygen-enriched side-blown bath smelting needs charging, open high temperature feed bin baiting valve, material is placed to measuring chute after metering, then imports in oxygen-enriched side-blown bath smelting by measuring chute baiting valve, completes fill process one time.The low-temperature flue gas of rotary kiln afterbody (approximately 300 ~ 350 ℃) is introduced and is admittedly expected heat exchange dust trapping device by low temperature flue, because the diameter of solid material heat exchange dust trapping device increases suddenly, velocity of flue gas reduces suddenly, and the flue dust that in flue gas, diameter is larger is because Action of Gravity Field is settled down.Cold wet stock through distributing device by material be distributed in solid material heat exchange dust trapping device, layering setting and individual layer be on the upset heat exchanger plates of radial arrangement along center, after in the hot flue gas of cold wet stock and rising, the less flue dust of diameter meets, be attached on cold wet stock and caught by cold wet stock, in company with material, together decline and rest in solid material heat exchange dust trapping device again, thereby reduced the amount of carrying secretly of flue dust in outlet flue gas.Rotation with mandrel, driving lever is stirred the fluted disc on upset heat exchanger plates, and material is turned on lower floor's upset heat exchanger plates layer by layer, carries out sufficient heat exchange with low-temperature flue gas, material is preheating to 100 ~ 150 ℃ of left and right, finally enters low temperature feed bin and completes warm.Meanwhile, temperature when flue gas arrives outlet is reduced to 200 ℃ of left and right, can directly enter the bagroom processing of gathering dust after gravity settling chamber.Apparatus of the present invention can directly utilize the high-temperature flue gas of bath smelting furnace to heat the material through rotary kiln, have effectively improved the temperature of charge that enters bath smelting furnace, have directly utilized the high temperature heat of the discharge of bath smelting furnace; By low-temperature flue gas, to entering the material of rotary kiln, enter preheating, further reclaimed smoke heat energy, the flue gas that makes to discharge does not need to show coldly can enter the next process processing of gathering dust again.Energy recovery is abundant, effectively reduces the reactive loss of heat energy, has reduced discharge, has reached the object of energy-saving and emission-reduction.
Claims (2)
1. a high-temperature smoke of bath smelting furnace waste heat direct-utilizing device, comprise smelting furnace flue (1), switching flue (5), rotary kiln (7), admittedly expect to it is characterized in that heat exchange dust trapping device (9): smelting furnace flue (1) is connected with revolution kiln hood (6) by switching flue (5); Described revolution kiln hood (6) blanking port is connected with bath smelting furnace charge door by high temperature feed bin (3), measuring chute (2) successively, and described high temperature feed bin (3), measuring chute (2) all arrange baiting valve; Described high temperature feed bin (3) inwall arranges refractory material lining, and its capacity is no less than 2 times an of inlet amount of bath smelting furnace; Described measuring chute (2) outer setting adiabator layer, its capacity equals inlet amount of bath smelting furnace; The mating surface of described revolution kiln hood (6) blanking port and high temperature feed bin (3) charging aperture is for outwards moving the direction inclined-plane of 2 ~ 3 ° that tilts, so as to install or during maintenance both decomposition with coordinate; Described rotary kiln (7) afterbody is connected and is admittedly expected heat exchange dust trapping device (9) by low temperature flue (8), admittedly expect that heat exchange dust trapping device (9) discharging opening is connected with rotary kiln (7) charging aperture by low temperature feed bin (11); Described smelting furnace switching flue (5) is removable overall structure with revolution kiln hood (6), by the roller on support and support, be connected with workbench (4), the upper track arranging of described workbench (4) matches with the revolution roller (13) of revolution kiln hood (6) support lower end with switching flue (5); Described solid material heat exchange dust trapping device (9) is cylinder cone bottom structure, admittedly expect that heat exchange dust trapping device (9) cone bottom outlet connects low temperature feed bin (11); Described low temperature feed bin (11) outer setting adiabator layer, its capacity is no less than 5 times an of inlet amount of bath smelting furnace; Described solid material heat exchange dust trapping device (9) center longitudinally arranges mandrel (92), and top arranges charging aperture (91), and described mandrel (92) is upper arranges distributing device (94) corresponding to charging aperture (91) below; Supporting seat (93) on described solid material heat exchange dust trapping device (9) inwall arranges returning face plate support (96), and returning face plate support (96) arranges upset plate package (95); The fluted disc that described upset plate package (95) is stirred on upset heat exchanger plates by the upper driving lever (97) arranging of mandrel (92) is realized upset; Described low temperature flue (8) is tangentially communicated with solid material heat exchange dust trapping device (9) cylindrical portion bottom; Described solid material heat exchange dust trapping device (9) cylindrical portion top tangentially arranges the exhaust tube (10) being communicated with it.
2. high-temperature smoke of bath smelting furnace waste heat direct-utilizing device as claimed in claim 1, it is characterized in that: the mating surface of described smelting furnace flue (1) and switching flue (5) is for outwards moving the direction inclined-plane of 2 ~ 3 ° that tilts, so as to install or during maintenance both decomposition with coordinate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210033346.2A CN102538493B (en) | 2012-02-15 | 2012-02-15 | Device for using waste heat of high-temperature smoke of bath smelting furnace directly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210033346.2A CN102538493B (en) | 2012-02-15 | 2012-02-15 | Device for using waste heat of high-temperature smoke of bath smelting furnace directly |
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| CN102538493A CN102538493A (en) | 2012-07-04 |
| CN102538493B true CN102538493B (en) | 2014-04-09 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103194594B (en) * | 2013-04-19 | 2014-07-23 | 长沙矿冶研究院有限责任公司 | Process system for reducing magnetized iron ore statically and deeply and method for reducing magnetized iron ore deeply by utilizing system |
| CN104776723B (en) * | 2015-03-20 | 2017-06-20 | 卢坤 | A kind of environmental protection, the energy-saving production method of non-ferrous metals casting melt |
| CN105695756A (en) * | 2016-02-02 | 2016-06-22 | 云南祥云飞龙再生科技股份有限公司电铅厂 | Comprehensive recovery treatment method and equipment for lead-zinc smelting slag |
| CN112595106B (en) * | 2020-12-07 | 2023-02-03 | 张绪祎 | High-concentration oxygen cyclone combustion liquid-state melting treatment material system |
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| CN201081529Y (en) * | 2007-08-08 | 2008-07-02 | 王荣华 | Full-automatic flap tray type drier |
| CN201162022Y (en) * | 2008-03-10 | 2008-12-10 | 广州珠江钢铁有限责任公司 | Flue gas dedusting connector bend apparatus |
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Patent Citations (7)
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| GB926545A (en) * | 1959-04-02 | 1963-05-22 | Elektrokemisk As | Improvements relating to processes for the reduction of materials in a rotary kiln |
| CN1184457A (en) * | 1995-03-15 | 1998-06-10 | 得克萨斯工业公司 | Method and apparatus for using blast-furnace slag in cement clinker production |
| CN1342741A (en) * | 2001-10-15 | 2002-04-03 | 李竹君 | Process for producing briquettes or shaped coke using quickly heated powdered coal as solid fuel heat-carrying parts |
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Inventor after: Wu Jianming Inventor after: Xie Guanhua Inventor after: Li Guo Inventor after: Liu Yong Inventor after: Lu Di Inventor before: Wu Jianmin Inventor before: Xie Guanhua Inventor before: Li Guo Inventor before: Liu Yong Inventor before: Lu Di |
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Free format text: CORRECT: INVENTOR; FROM: WU JIANMIN XIE GUANHUA LI GUO LIU YONG LU TO: WU JIANMING XIE GUANHUA LI GUO LIU YONG LU 201210033347.7;2012.12.19;BIBLIOGRAPHIC CHANGE |
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