CN103344114B - A kind of novel energy-saving emission-reducing sintering machine system and sintering method - Google Patents
A kind of novel energy-saving emission-reducing sintering machine system and sintering method Download PDFInfo
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Abstract
The present invention relates to a kind of novel energy-saving emission-reducing sintering machine system and sintering method, comprise sintering unit room, smoke circulating system is arranged in sintering unit room two sides, the sinter fume that sintering unit room clinker mineral produces is discharged by flue after dust-removal and desulfurizing, mineral after the indoor sintering of sintering machine are after fragmentation cooling, successively at finished product screen locellus I, finished product screen locellus II, sieve out finished product particle in finished product screen locellus III and be delivered to finished product stockyard, be unscreened the particle separated in finished product screen locellus III and enter proportioning room, the mineral of proportioning room preparation spray after device sprinkling through urea liquid, successively through mixed once room, secondary mixing chamber mixes, the mineral mixed are arranged in sintering machine indoor uniformly by mixture distributor device and sinter.The present invention makes full use of waste heat, saves the energy consumption of sintering process, significantly reduces the discharge of the organic pollutions such as NOx, bioxin.
Description
Technical field
The present invention relates to mineral sintering and agglomerating plant technical field, particularly a kind of novel energy-saving emission-reducing sintering machine system and sintering method.
Background technology
Sintering is the important procedure that integrated iron and steel works produce chain, along with the development of steel and iron industry, increasing to the required amount of iron ore.But the rich ore directly entering stove ironmaking is fewer and feweri, must a large amount of exploitation and use lean ore resource.Lean ore directly enters stove smelting can make blast fumance index worsen.Therefore, lean ore obtains fine ore by ore dressing process.The fine ore that concentrate and rich ore produce in exploitation and process, could be used for blast furnace ironmaking after needing agglomeration.And the effect of sintering machine is exactly mineral agglomeration.Metallurgical performance through the mineral of sintering is greatly improved, and brings huge economic benefit to blast fumance.Meanwhile, sintering process is very strong to the adaptability of raw material, not only can produce sintering deposit with the thicker rich ore powder of granularity and fine ore, can also process industrial ferrous contained discarded object simultaneously.
SO in current steel manufacture process
2total emission volumn accounts for 11% of national total emission volumn.The wherein SO that arranges outward of sintering circuit
2account for 85%.Sinter the source as the long flow process production process of iron and steel, its energy consumption accounts for 10% of energy consumption per ton steel.By sintering circuit technological progress, reduce sintering plant revamp, carry out UTILIZATION OF VESIDUAL HEAT IN, decreasing pollution thing (mainly SO
2, bioxin, dust) discharge, significant to the energy-saving and emission-reduction of whole steel industry.
" the comprehensive programme of work of " 12 " energy-saving and emission-reduction " issued by the State Council requires: steel industry will implement in full flue gas of sintering machine in " 12 " period, and supporting installation desulfurization equipment wanted by newly-built sintering machine.And require to promote energy-conservation and UTILIZATION OF VESIDUAL HEAT IN work.Explicitly call for 2015, kiln average operating efficiency improved 2 percentage points than 2010, and electric system operational efficiency improves 2-3 percentage point, newly-increased waste heat top pressure power generation ability 2,000 ten thousand kilowatts.
The nine ministries and commissions such as Environmental Protection Departments on the 19th combined and issued " instruction about adding strong dioxin prevention and cure of pollution " and require in October, 2010: emphasis does a good job of it the key industry bioxin prevention and cure of pollution work such as iron ore sintering machine, encourages to adopt sintered discharge gas circulating technology to reduce the discharge capacity of exhaust gas production and dioxin organic pollution.
Co., Ltd of Baogang Stocks Trading Co. is the Demonstration Enterprise of China's steel industry energy-saving and emission-reduction, is equipped with 3 495m
2sintering machine.In order to ensure the reduction of discharging requirement of full production, adding desulfurizer and coming into operation in 2010.But without sinter fume recycling residual heat technology, also do not reduce waste gas Ji the measure of dioxin emission amount.2 × 430m of Ningbo Iron and Steel Co
2the 1# unit of Sinter Machines Project was gone into operation in May, 2007." the Ning Gang 430m that in February, 2008 delivers
2the feature of Sinter Machines Project design " paper 1# unit conservation measures is main exhauster speed governing and hot air sintering technology.But without sinter fume recycling residual heat technology, also do not reduce waste gas Ji the measure of dioxin emission amount.This unit is without desulfurizer, and exhaust chimney, up to 200 meters, is often only the SO paid
2charges for disposing pollutants are more than 4,000,000 yuan.
On June 14th, 2006 discloses " sintering mineral powder machine " patent of invention (200410100876.X).This INVENTION IN GENERAL replaces imitation frosted glass dolly with movable supporting plate, and to reach energy-saving and cost-reducing, reduce the object of investing, this invention has no use in existing big-and-middle-sized iron ore sintering machine, does not also relate to energy-saving and emission-reduction and UTILIZATION OF VESIDUAL HEAT IN content simultaneously.
" a kind of energy-saving chain belt type sintering machine " patent of invention (2011100037146.X) that on May 25th, 2011 announces.This invention arranges chain band, front and back lift etc. on sintering machine, has no use, also do not relate to energy-saving and emission-reduction and UTILIZATION OF VESIDUAL HEAT IN content in existing big-and-middle-sized iron ore sintering machine.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of novel energy-saving emission-reducing sintering machine system and sintering method, recycles sintered discharge gas waste heat, decreases the discharge of the organic pollutions such as NOx, bioxin.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of novel energy-saving emission-reducing sintering machine system, comprise sintering unit room, face, described sintering unit room side is connected with mixture distributor device and grate-layer material distribution device, described mixture distributor device is connected with secondary mixing chamber by conveyer belt, described secondary mixing chamber is connected with mixed once room by conveyer belt, described mixed once room is connected with proportioning room by conveyer belt, urea liquid is set between described proportioning room and mixed once room and sprays device, described sintering unit room tail arranges single roll crusher, described single roll crusher is connected with rotary forced-air cooler by conveyer belt, described rotary forced-air cooler is connected with finished product screen locellus I by conveyer belt, described finished product screen locellus I is connected with finished product screen locellus II by conveyer belt, described finished product screen locellus II is connected with finished product screen locellus III by conveyer belt, described finished product screen locellus II is connected with grate-layer material distribution device by conveyer belt, described finished product screen locellus III is connected with proportioning room by conveyer belt, described finished product screen locellus I, finished product screen locellus II, finished product screen locellus III is connected with finished product stockyard respectively by conveyer belt, described sintering unit room head is connected with absorbent charcoal adsorber by fume pipe, described absorbent charcoal adsorber is connected with head electric cleaner by fume pipe, described head electric cleaner is connected with main exhauster by fume pipe, described main exhauster is connected with booster fan by fume pipe, described booster fan is connected with desulfuration absorbing tower by fume pipe, smoke circulating system is arranged in described sintering unit room both sides, described smoke circulating system is by multi-tube dust cleaner, circulating fan, bellows I, bellows II, bellows III, circulation fan housing forms, described bellows I are connected with sintering unit room by fume pipe with bellows II, switch valve is arranged between described bellows I and bellows II and sintering unit room, described bellows I are connected with multi-tube dust cleaner by fume pipe with bellows II, described multi-tube dust cleaner is connected with circulating fan by fume pipe, described circulating fan is connected with circulation fan housing by fume pipe, the circulated air cover of described bellows III is arranged in above sintering unit room.
Described rotary forced-air cooler adopts cooling blower air blast cooling clinker mineral particle.
The waste gas residual heat of described rotary forced-air cooler is fully absorbed by waste heat boiler.
Described whole sintering machine system adopts sack cleaner I and sack cleaner II dedusting.
Described desulfuration absorbing tower is simultaneously to the sintering flue gas desulfurization dedusting of several sintering machine systems.
The present invention also provides a kind of sintering method of a kind of novel energy-saving emission-reducing sintering machine system according to claim 1, comprises the following steps:
1) sinter return fine, Raw Ore, flux, solid fuel, iron content dust weigh composition raw materials for sintering at proportioning room automatic mixing;
2) raw materials for sintering is sent to mixed once room successively by conveyer and secondary mixing chamber mixes, and in transport process, urea liquid sprays device and sprays urea liquid to raw materials for sintering;
3) mixed sintering raw material is sent to mixture distributor device by conveyer from secondary mixing chamber, and mixed sintering raw material is arranged in the mixture ore trough of sintering unit room by mixture distributor device;
4) mixed sintering raw material carries out sintering reaction in sintering machine indoor and becomes sinter cake, and sinter cake is broken into by single roll crusher the mineral particle that diameter is 0mm ~ 150mm;
5) mineral particle is sent in rotary forced-air cooler by conveyer and cools, and cooled mineral particle is sent to successively in finished product screen locellus I, finished product screen locellus II, finished product screen locellus III and sieves;
6) finished product screen locellus I sieves out the mineral particle that diameter is greater than 20mm and delivers to finished product stockyard as finished product;
7) finished product screen locellus II sieves out the mineral particle that diameter is 10mm ~ 20mm, a part delivers to finished product stockyard as finished product, remainder is as the sintering auxiliary material of sintering unit room, be sent to grate-layer material distribution device by conveyer, sintering auxiliary material is arranged on the chassis of sintering unit room by grate-layer material distribution device uniformly;
8) finished product screen locellus III sieves out diameter is that the mineral particle of 5mm ~ 10mm delivers to finished product stockyard as finished product;
9) the mineral particle that in finished product screen locellus III, diameter is less than 5mm is delivered in proportioning room as sinter return fine by conveyer;
10) mixed sintering raw material carry out in sintering machine indoor sintering reaction produce sinter fume, not clean-burning sinter fume enter smoke circulating system get back to after flue gas ash removal sintering unit room rekindle;
11) sinter fume of sintering machine indoor extracts through main exhauster and after booster fan supercharging, enters absorbent charcoal adsorber and head electric precipitation successively along fume pipe, carries out flue gas absorption dedusting;
12) sinter fume finally enters desulfuration absorbing tower along fume pipe and discharges from flue after flue gas desulfurization and dedusting.
beneficial effect
The present invention relates to a kind of novel energy-saving emission-reducing sintering machine system and sintering method, urea liquid is set and sprays device, suppress the formation of bioxin in sintering process, reduce dioxin emission.Arrange absorbent charcoal adsorber, the organic matter such as bioxin in absorption flue gas, reduces the organic emission such as bioxin.Arrange smoke circulating system, when sintering machine high temperature section heat smoke cycles through sinter bed again, the high temperature sensible heat of flue gas all supplies sinter mixture, and the CO in circulating flue gas rekindles, and reaches UTILIZATION OF VESIDUAL HEAT IN, saves the effect of sintering process energy consumption.Be intensely decomposed during the sintering belt of the organic pollution such as bioxin, PAHs, VOC up to more than 1300 DEG C in by sinter bed in heat smoke, NOx is by also by thermal decomposition by partial destruction, can significantly reducing the discharge capacity of the organic pollutions such as NOx, bioxin during high temperature sintering band.Save sintering fuel unit consumption 3% ~ 6%, sintered discharge gas total emission volumn declines 25 ~ 40%, and sintering deposit energy consumption per ton is saved 2.5 ~ 5kg and marked coal, arranges an absorption tower total height 80 meters, reduces the chimney construction of conventional sintering machine up to 200 meters, separate unit 430m
2sintering machine can save charges for disposing pollutants 4,000,000 yuan every year.Waste heat boiler is set and fully absorbs central cooler waste gas residual heat, steam is provided and carries out cogeneration, separate unit 430m
2sintering machine can increase generating capacity 10,000 kilowatts newly.The major motor such as main exhauster, flue gas recirculation blower fan all adopt RHVC, and energy-saving effect is more than 15%.Dedusting and pneumatic seal induction system are set, reduce dust secondary pollution, realize comprehensive utilization of resources.
Accompanying drawing explanation
Fig. 1 is Structure and Process schematic diagram of the present invention;
Fig. 2 is flue gas recirculation process chart of the present invention;
Fig. 3 process chart of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
As Figure 1-3, the present invention relates to a kind of novel energy-saving emission-reducing sintering machine system, comprise sintering unit room 7, described sintering unit room 7 one side is connected with mixture distributor device 5 and grate-layer material distribution device 6, described mixture distributor device 5 is connected with secondary mixing chamber 4 by conveyer belt, described secondary mixing chamber 4 is connected with mixed once room 3 by conveyer belt, described mixed once room 3 is connected with proportioning room 1 by conveyer belt, urea liquid is set between described proportioning room 1 and mixed once room 3 and sprays device 2, described sintering unit room 7 tail arranges single roll crusher 9, described single roll crusher 9 is connected with rotary forced-air cooler 10 by conveyer belt, described rotary forced-air cooler 10 is connected with finished product screen locellus I 12 by conveyer belt, described finished product screen locellus I 12 is connected with finished product screen locellus II 13 by conveyer belt, described finished product screen locellus II 13 is connected with finished product screen locellus III 14 by conveyer belt, described finished product screen locellus II 13 is connected with grate-layer material distribution device 6 by conveyer belt, described finished product screen locellus III 14 is connected with proportioning room 1 by conveyer belt, described finished product screen locellus I 12, finished product screen locellus II 13, finished product screen locellus III 14 is connected with finished product stockyard 22 respectively by conveyer belt, described sintering unit room 7 head is connected with absorbent charcoal adsorber 15 by fume pipe, described absorbent charcoal adsorber 15 is connected with head electric cleaner 16 by fume pipe, described head electric cleaner 16 is connected with main exhauster 17 by fume pipe, described main exhauster 17 is connected with booster fan 18 by fume pipe, described booster fan 18 is connected with desulfuration absorbing tower 19 by fume pipe, smoke circulating system 8 is arranged in described sintering unit room 7 both sides, described smoke circulating system 8 is by multi-tube dust cleaner 24, circulating fan 25, bellows I 26, bellows II 27, bellows III 28, circulation fan housing 29 forms, described bellows I 26 are connected with sintering unit room 7 by fume pipe with bellows II 27, switch valve is arranged between described bellows I 26 and bellows II 27 and sintering unit room 7, described bellows I 26 are connected with multi-tube dust cleaner 24 by fume pipe with bellows II 27, described multi-tube dust cleaner 24 is connected with circulating fan 25 by fume pipe, described circulating fan 25 is connected with circulation fan housing 29 by fume pipe, the circulation fan housing 29 of described bellows III 28 is arranged in above sintering unit room 7, described rotary forced-air cooler 10 adopts cooling blower 11 air blast to cool clinker mineral particle, the waste gas residual heat of described rotary forced-air cooler 10 is fully absorbed by waste heat boiler 30, described whole sintering machine system adopts sack cleaner I 20 and sack cleaner II 21 dedusting, described desulfuration absorbing tower 19 is simultaneously to sinter fume 23 desulfurization and dedusting of several sintering machine systems.
The sintering method of described a kind of novel energy-saving emission-reducing sintering machine system, comprises the following steps:
1) sinter return fine, Raw Ore, flux, solid fuel, iron content dust weigh composition raw materials for sintering at proportioning room 1 automatic mixing;
2) raw materials for sintering is sent to mixed once room 3 successively by conveyer and secondary mixing chamber 4 mixes, and in transport process, urea liquid sprays device 2 and sprays urea liquid to raw materials for sintering;
3) mixed sintering raw material is sent to mixture distributor device 5 by conveyer from secondary mixing chamber 4, and mixed sintering raw material is arranged in the mixture ore trough of sintering unit room 7 by mixture distributor device 5;
4) mixed sintering raw material carries out sintering reaction and becomes sinter cake in sintering unit room 7, and sinter cake is broken into by single roll crusher 9 the mineral particle that diameter is 0mm ~ 150mm;
5) mineral particle is sent in rotary forced-air cooler 10 by conveyer and cools, and cooled mineral particle is sent to successively in finished product screen locellus I 12, finished product screen locellus II 13, finished product screen locellus III 14 and sieves;
6) finished product screen locellus I 12 sieves out the mineral particle that diameter is greater than 20mm and delivers to finished product stockyard 22 as finished product;
7) finished product screen locellus II 13 sieves out the mineral particle that diameter is 10mm ~ 20mm, a part delivers to finished product stockyard 22 as finished product, remainder is as the sintering auxiliary material of sintering unit room 7, be sent to grate-layer material distribution device 6 by conveyer, sintering auxiliary material is arranged on the chassis of sintering unit room 7 by grate-layer material distribution device 6 uniformly;
8) finished product screen locellus III 14 sieves out diameter is that the mineral particle of 5mm ~ 10mm delivers to finished product stockyard 22 as finished product;
9) the mineral particle that in finished product screen locellus III 14, diameter is less than 5mm is delivered in proportioning room 1 as sinter return fine by conveyer;
10) mixed sintering raw material sintering unit room 7 in carry out sintering reaction produce sinter fume, not clean-burning sinter fume enter smoke circulating system 8 get back to after flue gas ash removal sintering unit room 7 rekindle;
11) sinter fume sintered in unit room 7 extracts through main exhauster 17 and after booster fan 18 supercharging, enters absorbent charcoal adsorber 15 and head electric precipitation 16 successively along fume pipe, carries out flue gas absorption dedusting;
12) sinter fume finally enters desulfuration absorbing tower 19 along fume pipe and discharges from flue after flue gas desulfurization and dedusting.
Embodiment 1
The production procedure of sintering machine system comprises: batching, mixing, cloth, sintering, cooling, the screening of whole grain, flue gas recirculation, flue-gas dust-removing and desulfurization, sinter return fine, Raw Ore, flux, solid fuel, iron content dust etc. at proportioning room 1 automatic weighing, then deliver to mixed once room 3 successively by feed mechanism, secondary mixing chamber 4 mixes.The urea liquid arranged between proportioning room 1 and mixed once room 3 sprays device 2 and is sprayed on raw materials for sintering by urea liquid, raw materials for sintering is after twice mixing, by sealing-tape machine, compound is delivered to mixture distributor device 5, compound is arranged in agglomerating chamber 7 by mixture distributor device 5 uniformly.Agglomerating chamber 7 sinters compound into sinter cake, agglomerating chamber 7 sinters the flue gas of generation after absorbent charcoal adsorber 15 absorption and head electric cleaner 16 dedusting, discharge from flue through desulfuration absorbing tower 19 desulfurization and dedusting again, the flue gas produced for the non-Thorough combustion of compound enters smoke circulating system 8, come back to agglomerating chamber 7 Thorough combustion, after sinter cake is broken into clinker mineral particle by single roll crusher 9, enter rotary forced-air cooler 10 to cool, finished product screen locellus I 12 is entered successively after the cooling of mineral particle, finished product screen locellus II 13, finished product screen locellus III 14 sieves, finished product screen locellus I 12 sieves out the finished product mineral particle that mineral particle diameter is greater than 20mm and delivers to finished product stockyard 22, the mineral particle that diameter is less than 20mm enters finished product screen locellus II 13 and screens, it is that the mineral particle of 10mm ~ 20mm grade is as grate-layer material that finished product screen locellus II 13 sieves out diameter, sintering machine shop fixtures hopper is transported to by sealing-tape machine, redundance delivers to finished product stockyard 22 as finished product mineral particle, the part that diameter is less than 10mm delivers to finished product screen locellus III 14, it is that the mineral particle of 5mm ~ 10mm delivers to finished product stockyard 22 as finished product that finished product screen locellus III 14 sieves out diameter, the mineral particle that diameter is less than 5mm is delivered to proportioning room 1 and is carried out sintered.
Claims (6)
1. a novel energy-saving emission-reducing sintering machine system, comprise sintering unit room (7), it is characterized in that, described sintering unit room (7) side is connected with mixture distributor device (5) and grate-layer material distribution device (6), described mixture distributor device (5) is connected with secondary mixing chamber (4) by conveyer belt, described secondary mixing chamber (4) is connected with mixed once room (3) by conveyer belt, described mixed once room (3) is connected with proportioning room (1) by conveyer belt, urea liquid is set between described proportioning room (1) and mixed once room (3) and sprays device (2), described sintering unit room (7) tail arranges single roll crusher (9), described single roll crusher (9) is connected with rotary forced-air cooler (10) by conveyer belt, described rotary forced-air cooler (10) is connected with finished product screen locellus I (12) by conveyer belt, described finished product screen locellus I (12) is connected with finished product screen locellus II (13) by conveyer belt, described finished product screen locellus II (13) is connected with finished product screen locellus III (14) by conveyer belt, described finished product screen locellus II (13) is connected with grate-layer material distribution device (6) by conveyer belt, described finished product screen locellus III (14) is connected with proportioning room (1) by conveyer belt, described finished product screen locellus I (12), finished product screen locellus II (13), finished product screen locellus III (14) is connected with finished product stockyard (22) respectively by conveyer belt, described sintering unit room (7) head is connected with absorbent charcoal adsorber (15) by fume pipe, described absorbent charcoal adsorber (15) is connected with head electric cleaner (16) by fume pipe, described head electric cleaner (16) is connected with main exhauster (17) by fume pipe, described main exhauster (17) is connected with booster fan (18) by fume pipe, described booster fan (18) is connected with desulfuration absorbing tower (19) by fume pipe, smoke circulating system (8) is arranged in described sintering unit room (7) both sides, described smoke circulating system (8) is by multi-tube dust cleaner (24), circulating fan (25), bellows I (26), bellows II (27), bellows III (28), circulation fan housing (29) forms, described bellows I (26) are connected with sintering unit room (7) by fume pipe with bellows II (27), switch valve is arranged between described bellows I (26) and bellows II (27) and sintering unit room (7), described bellows I (26) are connected with multi-tube dust cleaner (24) by fume pipe with bellows II (27), described multi-tube dust cleaner (24) is connected with circulating fan (25) by fume pipe, described circulating fan (25) is connected with circulation fan housing (29) by fume pipe, the circulation fan housing (29) of described bellows III (28) is arranged in sintering unit room (7) top.
2. a kind of novel energy-saving emission-reducing sintering machine system according to claim 1, is characterized in that, described rotary forced-air cooler (10) adopts cooling blower (11) air blast cooling clinker mineral particle.
3. a kind of novel energy-saving emission-reducing sintering machine system according to claim 1, is characterized in that, the waste gas residual heat of described rotary forced-air cooler (10) is fully absorbed by waste heat boiler (30).
4. a kind of novel energy-saving emission-reducing sintering machine system according to claim 1, is characterized in that, described whole sintering machine system adopts sack cleaner I (20) and sack cleaner II (21) dedusting.
5. a kind of novel energy-saving emission-reducing sintering machine system according to claim 1, is characterized in that, described desulfuration absorbing tower (19) is simultaneously to sinter fume (23) desulfurization and dedusting of several sintering machine systems.
6. use a sintering method for a kind of novel energy-saving emission-reducing sintering machine system described in claim 1, comprise the following steps:
1) sinter return fine, Raw Ore, flux, solid fuel, iron content dust weigh composition raw materials for sintering at proportioning room (1) automatic mixing;
2) raw materials for sintering is sent to mixed once room (3) successively by conveyer and secondary mixing chamber (4) mixes, and in transport process, urea liquid sprays device (2) and sprays urea liquid to raw materials for sintering;
3) mixed sintering raw material is sent to mixture distributor device (5) by conveyer from secondary mixing chamber (4), and mixed sintering raw material is arranged in the mixture ore trough of sintering unit room (7) by mixture distributor device (5);
4) mixed sintering raw material carries out sintering reaction and becomes sinter cake in sintering unit room (7), and sinter cake is broken into by single roll crusher (9) the mineral particle that diameter is 0mm ~ 150mm;
5) mineral particle is sent in rotary forced-air cooler (10) by conveyer and cools, and cooled mineral particle is sent to successively in finished product screen locellus I (12), finished product screen locellus II (13), finished product screen locellus III (14) and sieves;
6) finished product screen locellus I (12) sieves out the mineral particle that diameter is greater than 20mm and delivers to finished product stockyard (22) as finished product;
7) finished product screen locellus II (13) sieves out the mineral particle that diameter is 10mm ~ 20mm, a part delivers to finished product stockyard (22) as finished product, remainder is as the sintering auxiliary material of sintering unit room (7), be sent to grate-layer material distribution device (6) by conveyer, sintering auxiliary material is arranged on the chassis of sintering unit room (7) by grate-layer material distribution device (6) uniformly;
8) finished product screen locellus III (14) sieves out diameter is that the mineral particle of 5mm ~ 10mm delivers to finished product stockyard (22) as finished product;
9) the mineral particle that the middle diameter of finished product screen locellus III (14) is less than 5mm is delivered in proportioning room (1) as sinter return fine by conveyer;
10) mixed sintering raw material carries out sintering reaction and produces sinter fume in sintering unit room (7), and not clean-burning sinter fume enters smoke circulating system (8) and after flue gas ash removal, gets back to sintering unit room (7) rekindle;
11) sinter fume in sintering unit room (7) is after main exhauster (17) extraction and booster fan (18) supercharging, enter absorbent charcoal adsorber (15) and head electric precipitation (16) successively along fume pipe, carry out flue gas absorption dedusting;
12) sinter fume finally enters desulfuration absorbing tower (19) along fume pipe and discharges from flue after flue gas desulfurization and dedusting.
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| CN105318734A (en) * | 2015-03-21 | 2016-02-10 | 李正福 | Device and method for applying and purifying waste heat of low-temperature waste gas of large sintering flue |
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| CN111203083B (en) * | 2020-02-25 | 2021-05-07 | 钢铁研究总院 | Sintering flue gas desulfurization and denitrification process |
| CN111318147B (en) * | 2020-02-25 | 2021-06-04 | 钢铁研究总院 | Sintering flue gas desulfurization and denitrification circulation system |
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