CN103234349B - Furnace type cooling and heat exchange device for sintered ores - Google Patents
Furnace type cooling and heat exchange device for sintered ores Download PDFInfo
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- CN103234349B CN103234349B CN201310127825.5A CN201310127825A CN103234349B CN 103234349 B CN103234349 B CN 103234349B CN 201310127825 A CN201310127825 A CN 201310127825A CN 103234349 B CN103234349 B CN 103234349B
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a furnace type cooling and heat exchange device for sintered ores and relates to the technical field of cooling devices of sintered ores. A single-roll crusher is arranged at an outlet of a sintering machine, a flap valve is arranged under the single-roll crusher, the bottom of the flap valve is arranged at the connection position of a furnace cooling system chute and an annular cooling system chute/a belt cooling system chute, the flap valve can be switched between the furnace cooling system chute and the annular cooling system chute/the belt cooling system chute, a hot vibration screen also serves as the bottom wall of the furnace cooling system chute, a hot return mine chute is connected under the hot vibration screen and is connected with the annular cooling system chute/the belt cooling system chute, an outlet of the furnace cooling system chute is connected with one end of a chain-scraper conveyor, the other end of the chain-scraper conveyor is connected with a fire door of a cooling furnace, and a heat-insulating cover is arranged above the chain-scraper conveyor. By the aid of the device, the cooling effect and the waste heat utilization ratio of sintered ores are effectively improved, and the furnace cooling system device can be arranged in a remote distance without being limited by fields.
Description
Technical field
The present invention relates to sintering deposit cooling device technical field, relate in particular to a kind of sintering deposit stove formula cooling heat exchange device.
Background technology
China is energy resource consumption big country, for wideling popularize energy-conserving and environment-protective technology, improves comprehensive utilization rate of energy source, and country has proposed a series of encouragement and preferential policy.Steel and iron industry is AND ENERGY RESOURCES CONSUMPTION IN CHINA rich and influential family, accounts for 15% of national total energy consumption, and in steel manufacture process, the energy consumption of sintering circuit occupies the second, and in SINTERING PRODUCTION, heat sinter sensible heat accounts for the more than 40% of overall heat consumption, and sintered, energy saving is very important.It is the effective way that improves steel and iron industry efficiency that high efficiente callback utilizes sintering mine sensible heat.Current, China's sintering deposit cooling heat transferring and heat recovery mainly adopt and encircle cold or band refrigeration technique, < < sintering process heat recovery research > > (Zhang Weiliang, Ma Zhongmin, all extra large equality. nonferrous metallurgy energy-conservation [J]. 2011, (27) 1:47-50), < < sintered ring cold exhaust heat reclaims generation technology feature and application > > (Shi Baodong, Liu Ye, Yuan Wei violent wind etc. metallurgical power [J]. 2011 (1): when 53-55) etc. many pieces of researchs show to adopt the above-mentioned sintering deposit type of cooling, there is following shortcoming: 1. waste heat parameter fluctuation is large, jeopardize bootstrap system safety, 2. system air leakage problem is difficult to solve, and the decay of UTILIZATION OF VESIDUAL HEAT IN efficiency is fast, and flue dust leaks and pollutes larger to operating environment, 3. flue-gas temperature lower (general 300 ℃-400 ℃), UTILIZATION OF VESIDUAL HEAT IN efficiency is low.Therefore the cooling device of developing high efficiency cooling sintering deposit and recovery waste heat is significant, and arranges that new cooling device can be subject to the restriction in existing equipment place, implements difficulty larger.Therefore, can improve again cooling effect and the UTILIZATION OF VESIDUAL HEAT IN efficiency of sintering deposit when why not being subject to the new cooling device of the remote layout of being limited in of original place, be a problem demanding prompt solution.
Summary of the invention
The object of the invention is for solving the problems of the technologies described above, a kind of sintering deposit stove formula cooling heat exchange device is provided, can improve cooling effect and the UTILIZATION OF VESIDUAL HEAT IN efficiency of sintering deposit, and the restriction that can not be subject to original cooling device place is arranged at a distance.
To achieve these goals, the technical solution used in the present invention is: a kind of sintering deposit stove formula cooling heat exchange device, comprise sintering machine, single roll crusher, flap valve, heat shake sieve, chain and flight conveyer, distribution device, cool furnace, air-distribution device, discharge device and belt conveyer, the outlet of described sintering machine is provided with single roll crusher, single roll crusher below is provided with flap valve, the bottom of flap valve be arranged at stove cooling system chute and ring cold/with the junction of cooling system chute, flap valve can and encircle between cold/band cooling system chute at stove cooling system chute and switch; The heat sieve that shakes doubles as the diapire of stove cooling system chute, and the shake below of sieve of heat connects hot returning ore chute, and hot returning ore chute is cold with ring/and be with cooling system chute to be connected; The outlet of stove cooling system chute is connected with one end of chain and flight conveyer, and the other end of chain and flight conveyer is connected with the fire door of cool furnace, and the top of chain and flight conveyer is provided with stay-warm case; Distribution device is positioned at the fire door of cool furnace, and air-distribution device is positioned at the bottom of cool furnace, and air-distribution device below connects discharge device, and there is belt conveyer discharge device below; Described cool furnace comprises fire door petticoat pipe, the district that prestores, cooling zone and ring-shaped flue district, ring-shaped flue district comprises ring-shaped flue internal layer and ring-shaped flue skin, the bottom in ring-shaped flue district is provided with the radial support post totally radially distributing, the two ends of radial support post fix with ring-shaped flue internal layer and ring-shaped flue skin respectively, on adjacent two radial support posts, are coated with slidably high-temperature flue gas adjustable plate.
The fire door of described cool furnace is provided with fire door valve.
Described ring-shaped flue internal layer and radial support post all adopt stainless steel welding, and abrasive brick is posted on the two sides of stainless steel weldment.
Described high-temperature flue gas adjustable plate is spaced apart, and number is 2-10, stainless steel and refractory brick, consists of.
Described discharge device comprises bulkhgead gate for sealing cool furnace bottom discharging mouth, vibrates quantitative ore feeder and seal rotary ore discharge device, vibrate the below that quantitative ore feeder is positioned at cool furnace discharge gate, seal rotary ore discharge device is arranged at the exit of the quantitative ore feeder of vibration.
The beneficial effect that the present invention brings is: 1. sintering deposit and air heat exchange under a basic completely airtight environment, the entrance that is exported to cool furnace from sintering machine is air-tight state, cool furnace body and air-distribution device, discharge device also can be realized sealing, effectively having changed current sintered ore cooling system leaks out seriously, the defect that utilization rate of waste heat is low, realized the displacement of heat energy, improved cooling effect and the flue-gas temperature (approximately 600 ℃) of sintering deposit, flue dust leaks few also highly beneficial to the improvement of whole operating environment; 2. adopt shake sieve and chain and flight conveyer of flap valve, heat to transport sintering deposit to cool furnace, can retain completely original sintering deposit ring cold/be with cold technique in the situation that, be not subject to the location arrangements stove cooling system device away from from sintering machine that is limited in place; When stove cooling system breaks down, flap valve can be switched to fast and encircle cold/band cooling system, has guaranteed the running rate of sintering machine; 3. cool furnace is provided with the district that prestores, can avoid the discontinuous fluctuation that causes the gentle exhaust gas volumn of cigarette of producing because of sintering deposit, be conducive to the stable operation of waste-heat recovery device, simultaneously because temperature in the district that prestores maintains 750 ℃ of left and right, sintering deposit is as put into cold stoking, be conducive to all even stable of ore particle temperature, improved the quality of sintering deposit; The district that prestores also can stop on a small amount of hot-air of part and alters to fire door, can stop because the micro-subnormal ambient in ring-shaped flue district causes a large amount of cold airs and enter in stove simultaneously; 4. ring-shaped flue internal layer adopts heat-resistance stainless steel welding, abrasive brick is posted on the two sides of weldment, the weight of brick is born by whole stainless steel weldment, this structure takes full advantage of the operating mode that sintering deposit temperature is not too high, optimized the structure in ring-shaped flue district, guarantee intensity, extended the service life in ring-shaped flue district; And ring-shaped flue district is micro-negative pressure, can effectively guarantee that high temperature air after heat exchange fully enters ring-shaped flue district and after dedusting, enters bootstrap system; 5. in ring-shaped flue district, radially the setting of support column and high-temperature flue gas adjustable plate has avoided high-temperature flue gas to a direction bias current, guaranteed that whole ring-shaped flue district internal pressure is basically identical, high-temperature flue gas adjustable plate can slide along the diametric(al) of ring-shaped flue, thereby the sectional area of a plurality of independently exhaust gases passes of capable of regulating, reaches the object of adjusting air quantity; 6. sintering deposit moves down by deadweight in cool furnace, and between ore deposit and ore deposit, mutually slight friction is clashed into, to improve sintering deposit granularity uniformity, to improve its intensity highly beneficial.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the A-A sectional drawing of Fig. 1.
Reference numeral: 1, sintering machine, 2, single roll crusher, 3, flap valve, 4, stove cooling system chute, 5, encircle cold/band cooling system chute, 6, the heat sieve that shakes, 7, hot returning ore chute, 8, encircle cold/band cooling system, 9, chain and flight conveyer, 10, stay-warm case, 11, fire door petticoat pipe, 12, fire door valve, 13, distribution device, 14, district prestores, 15, ring-shaped flue district, 16, cooling zone, 17, air-distribution device, 18, bulkhgead gate, 19, vibrate quantitative ore feeder, 20, seal rotary ore discharge device, 21, belt conveyer, 22, ring-shaped flue internal layer, 23, ring-shaped flue is outer, 24, radial support post, 25, high-temperature flue gas adjustable plate.
The specific embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As depicted in figs. 1 and 2, a kind of sintering deposit stove formula cooling heat exchange device, comprise sintering machine 1, single roll crusher 2, flap valve 3, heat shake sieve 6, chain and flight conveyer 9, distribution device 13, cool furnace, air-distribution device 17, discharge device and belt conveyer 21, the outlet of described sintering machine 1 is provided with single roll crusher 2, single roll crusher 2 belows are provided with flap valve 3, the bottom of flap valve 3 be arranged at stove cooling system chute 4 and ring cold/with the junction of cooling system chute 5, flap valve 3 can and encircle between cold/band cooling system chute 5 at stove cooling system chute 4 and switch; The heat diapire that sieve 6 doubles as stove cooling system chute 4 that shakes, the shake below of sieve 6 of heat connects hot returning ore chute 7, and hot returning ore chute 7 is cold with ring/and be with cooling system chute 5 to be connected; The outlet of stove cooling system chute 4 is connected with one end of chain and flight conveyer 9, and the other end of chain and flight conveyer 9 is connected with the fire door of cool furnace, and the top of chain and flight conveyer 9 is provided with stay-warm case 10; Distribution device 13 is positioned at the fire door of cool furnace, and air-distribution device 17 is positioned at the bottom of cool furnace, and air-distribution device 17 belows connect discharge device, and there is belt conveyer 21 discharge device below; Described cool furnace comprises fire door petticoat pipe 11, the district 14 that prestores, 16Ji ring-shaped flue district, cooling zone 15, ring-shaped flue district 15 comprises ring-shaped flue internal layer 22 and ring-shaped flue skin 23, the bottom in ring-shaped flue district 15 is provided with the radial support post 24 totally radially distributing, the two ends of radial support post 24 fix with ring-shaped flue internal layer 22 and ring-shaped flue skin 23 respectively, on adjacent two radial support posts 24, are coated with slidably high-temperature flue gas adjustable plate 25.
The fire door of described cool furnace is provided with fire door valve 12.
Described ring-shaped flue internal layer 22 and radial support post 24 all adopt stainless steel welding, and abrasive brick is posted on the two sides of stainless steel weldment.
Described high-temperature flue gas adjustable plate 25 is spaced apart, and number is 2-10, stainless steel and refractory brick, consists of.
Described discharge device comprises bulkhgead gate 18 for sealing cool furnace bottom discharging mouth, vibrates quantitative ore feeder 19 and seal rotary ore discharge device 20, vibrate the below that quantitative ore feeder 19 is positioned at cool furnace discharge gate, seal rotary ore discharge device 20 is arranged at the exit of the quantitative ore feeder 19 of vibration.
The course of work of the present invention is as follows: from sintering machine 1 heat sinter out after single roll crusher 2 fragmentations, by flap valve 3, be transported to stove cooling system chute 4, through heat, shake after sieve 6 screenings, the sintering deposit that granularity is less than 5 ㎜ as hot returning ore through hot returning ore chute 7 enter former ring cold/band cooling system 8, now encircle cold/band cooling system 8 can not blow in machine or a small amount of air blast can hot returning ore is cooling, without newly added equipment for the treatment of hot returning ore, when stove cooling system device breaks down, flap valve 3 is switched to and encircles cold/band cooling system chute 5, now sintering deposit can be cold through encircling/and band cooling system 8 process for cooling are cooling, do not affect the production of sintering machine 1.The sintering deposit that granularity is greater than 5 ㎜ is transported to cool furnace through chain and flight conveyer 9, chain and flight conveyer 9 liners are Wear-resistant, high-temperature resistant material, the inclination angle of chain and flight conveyer 9 is between 10-25 °, chain and flight conveyer 9 tops arrange stay-warm case 10, the cross section of stay-warm case 10 is semicircle, reduce to greatest extent the internal volume of stay-warm case 10, reduced the thermal loss in sintering deposit transport process.There is fire door petticoat pipe 11 cool furnace top, and fire door arranges fire door valve 12, and duty fire door valve 12 is opened, and when interrupting for ore deposit, fire door valve 12 is closed, and can reduce temperature fluctuation and thermal loss in stove.Fire door distribution device 13 is guaranteed high temperature sintering ore deposit continuous uniform and packs into the district 14 that prestores of cool furnace, then to cooling zone, bottom, 16 supply with continuously heat sinters, Cryogenic air (temperature≤100 ℃) is blasted by the air-distribution device 17 of cool furnace bottom simultaneously, in cooling zone 16 with sintering deposit reverse heat-exchange, high-temperature flue gas after being heated flows to ring-shaped flue district 15 and enters bootstrap system, between the interior ring-shaped flue internal layer 22 in ring-shaped flue district 15 and ring-shaped flue skin 23, arranging of radial support post 24 and high-temperature flue gas adjustable plate 25 guaranteed that whole ring-shaped flue district 15 internal pressures are basically identical, improved the cooling effect of sintering deposit, the number of high-temperature flue gas adjustable plate 25 is 2-10, be preferably 4-6, cooled sintering deposit (temperature≤180 ℃) is discharged by cool furnace discharge device, the sealing of bottom of furnace body when bulkhgead gate 18 is changed for vibrating quantitative ore feeder 19 maintenance, the effect of vibrating quantitative ore feeder 19 is that cooled sintering deposit is discharged, as required, capable of regulating vibration frequency changes mine-supplying quantity, seal rotary ore discharge device 20 seals furnace bottom during for normal production under the prerequisite that guarantees smooth and easy ore discharge, and the cooling sintering deposit after discharge is transported to blast furnace via belt conveyer 21.Adopt this device can retain completely original sintering deposit ring cold/be with cold technique in the situation that, stove cooling system device is arranged away from sintering machine 1 outlet, be not subject to the restriction of sintering machine 1 position; The entrance that is exported to cool furnace from sintering machine 1 is all in closed environment, cool furnace body and air-distribution device 17, discharge device also can be realized sealing, therefore sintering deposit and air are heat exchange under a complete airtight environment substantially, realized the displacement of heat energy, in addition, flue dust leaks few also highly beneficial to the improvement of whole operating environment.
Claims (5)
1. a sintering deposit stove formula cooling heat exchange device, comprise sintering machine (1), single roll crusher (2), flap valve (3), the heat sieve (6) that shakes, chain and flight conveyer (9), distribution device (13), cool furnace, air-distribution device (17), discharge device and belt conveyer (21), it is characterized in that: the outlet of described sintering machine (1) is provided with single roll crusher (2), single roll crusher (2) below is provided with flap valve (3), the bottom of flap valve (3) is arranged at stove cooling system chute (4) and encircles the junction of cold/band cooling system chute (5), flap valve (3) can switch between/band cooling system chute (5) cold at stove cooling system chute (4) and ring, the heat sieve (6) that shakes doubles as the diapire of stove cooling system chute (4), and the shake below of sieve (6) of heat connects hot returning ore chute (7), and hot returning ore chute (7) is cold with ring/and be with cooling system chute (5) to be connected, the outlet of stove cooling system chute (4) is connected with one end of chain and flight conveyer (9), and the other end of chain and flight conveyer (9) is connected with the fire door of cool furnace, and the top of chain and flight conveyer (9) is provided with stay-warm case (10), distribution device (13) is positioned at the fire door of cool furnace, and air-distribution device (17) is positioned at the bottom of cool furnace, and air-distribution device (17) below connects discharge device, and there is belt conveyer (21) discharge device below, described cool furnace comprises fire door petticoat pipe (11), the district that prestores (14), cooling zone (16) and ring-shaped flue district (15), ring-shaped flue district (15) comprises ring-shaped flue internal layer (22) and ring-shaped flue outer (23), the bottom in ring-shaped flue district (15) is provided with the radial support post (24) totally radially distributing, the two ends of radial support post (24) fix with ring-shaped flue internal layer (22) and ring-shaped flue outer (23) respectively, are coated with slidably high-temperature flue gas adjustable plate (25) on adjacent two radial support posts (24).
2. a kind of sintering deposit stove formula cooling heat exchange device according to claim 1, is characterized in that: the fire door of described cool furnace is provided with fire door valve (12).
3. a kind of sintering deposit stove formula cooling heat exchange device according to claim 1, is characterized in that: described ring-shaped flue internal layer (22) and radial support post (24) all adopt stainless steel welding, and abrasive brick is posted on the two sides of stainless steel weldment.
4. a kind of sintering deposit stove formula cooling heat exchange device according to claim 1, is characterized in that: described high-temperature flue gas adjustable plate (25) is spaced apart, and number is 2-10, stainless steel and refractory brick, consists of.
5. a kind of sintering deposit stove formula cooling heat exchange device according to claim 1, it is characterized in that: described discharge device comprises bulkhgead gate (18) for sealing cool furnace bottom discharging mouth, vibrates quantitative ore feeder (19) and seal rotary ore discharge device (20), vibrate the below that quantitative ore feeder (19) is positioned at cool furnace discharge gate, seal rotary ore discharge device (20) is arranged at the exit of the quantitative ore feeder of vibration (19).
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| CN201310127825.5A CN103234349B (en) | 2013-04-15 | 2013-04-15 | Furnace type cooling and heat exchange device for sintered ores |
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| CN201310127825.5A CN103234349B (en) | 2013-04-15 | 2013-04-15 | Furnace type cooling and heat exchange device for sintered ores |
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| CN103234349B true CN103234349B (en) | 2014-11-05 |
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| CN103424001B (en) * | 2013-08-08 | 2015-07-01 | 西安交通大学 | High-temperature material vertical cooler and waste heat using system |
| CN103868364A (en) * | 2014-02-27 | 2014-06-18 | 中国科学院力学研究所 | Furnace type cooling device |
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| CN105292990A (en) * | 2015-12-09 | 2016-02-03 | 攀枝花钢城集团有限公司 | Strontium ferrite pre-sintering ball material cooling and storing system and process |
| CN105387730A (en) * | 2015-12-25 | 2016-03-09 | 宝钢工程技术集团有限公司 | Sintered ore sensible heat exchange device and method |
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| CN107957200A (en) * | 2017-12-22 | 2018-04-24 | 中冶焦耐(大连)工程技术有限公司 | A kind of sinter multicell uprightly cools down furnace side and goes out formula feeding system |
| CN108131954B (en) * | 2017-12-22 | 2023-09-15 | 中冶焦耐(大连)工程技术有限公司 | Continuous efficient cooling method for sinter |
| CN110411225A (en) * | 2019-07-11 | 2019-11-05 | 西安华江环保科技股份有限公司 | A kind of sinter erects pot type cooling device and method |
| CN114180304A (en) * | 2021-12-09 | 2022-03-15 | 四川川锅锅炉有限责任公司 | Stokehold conveying system applied to high-temperature mineral aggregate |
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