CN203728895U - Desulfurization agent adding device and on-line desulfurization system used in sintering process - Google Patents
Desulfurization agent adding device and on-line desulfurization system used in sintering process Download PDFInfo
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- CN203728895U CN203728895U CN201420135433.3U CN201420135433U CN203728895U CN 203728895 U CN203728895 U CN 203728895U CN 201420135433 U CN201420135433 U CN 201420135433U CN 203728895 U CN203728895 U CN 203728895U
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Abstract
The utility model discloses a desulfurization agent adding device and an on-line desulfurization system used in a sintering process and belongs to the technical field of desulfurization. The on-line desulfurization system comprises a sintering trolley and the desulfurization agent adding device, wherein the desulfurization agent adding device comprises a desulfurization agent storage bin, a desulfurization agent feeding machine and a desulfurization agent guiding mechanism; the outlet of the desulfurization agent storage bin is connected with the feed opening of the desulfurization agent feeding machine; the discharge opening of the desulfurization agent feeding machine is connected with the feed end of the desulfurization agent guiding mechanism; the discharge end of the desulfurization agent material guiding mechanism extends into the mixture layer of the sintering trolley; the discharge end of the desulfurization agent guiding mechanism is used for discharging a desulfurization agent; the distance from the discharge end of the desulfurization agent guiding mechanism to the bottom of the sintering trolley is 1/8 to 1/4 of the total height of a sintered material layer. Through the desulfurization agent adding device and the on-line desulfurization system, the desulfurization agent is additionally paved layer by layer into the mixture layer, is distributed highly accurately and is uniform and stable, the desulfurization efficiency of the sintering process can be improved to the utmost extent, and the quality of agglomerate is hardly affected.
Description
Technical field
The utility model relates to desulfurization technology field, more particularly, relates to a kind of sweetening agent adding apparatus and on-line desulphurization system of sintering process.
Background technology
Sintering is the important procedure that Steel Complex produce chain, along with the development of Iron And Steel Industry, increasing to the required amount of iron ore.Yet, fewer and feweri directly into the rich ore of stove ironmaking, must a large amount of exploitations and use lean ore resource.Lean ore can make blast furnace productive capacity worsen directly into stove smelting.Therefore, lean ore is processed and is obtained fine ore by ore dressing.Concentrate and rich ore be the fine ore that produces in exploitation and the course of processing, and needing could be for blast furnace ironmaking after agglomeration.And the effect of sinter machine is exactly mineral agglomeration.Metallurgical performance through the mineral of sintering is greatly improved, and to blast furnace, produces and brings huge economic benefit.Meanwhile, sintering process is very strong to the adaptability of raw material, not only can produce agglomerate with the thicker rich ore powder of granularity and fine ore, can also process industrial ferrous contained waste simultaneously.
SO in current steel manufacture process
2total emission volumn accounts for 11% of national total emission volumn.The SO that wherein sintering circuit is arranged outward
2account for 85%.Sintering is as the source of the long flow process production process of iron and steel, and its energy consumption accounts for 10% of energy consumption per ton steel.By sintering circuit technical progress, reduce sintering circuit energy consumption, reducing pollutent (is mainly SO
2, dioxin, dust) discharge, significant to the energy-saving and emission-reduction of whole steel industry.
National environmental protection portion formulated " 12 " sintering, pelletizing Air Pollutant Emission national standard (GB28662-2012) starts to implement integrally new 200mg/m on January 1st, 2015
3sintering SO
2emission standard, adds the haze weather of recent national most areas, has pushed the sintering process pollutant emission of iron and steel enterprise to the teeth of the storm.As the important process link of iron and steel flow process pollutant emission, sintering process desulphurization and denitration, Tuo dioxin have become current national great technical barrier in the urgent need to address, and wherein desulfurization stands in the breach.
Current sintering desulfuration method both domestic and external is mainly the end treatment method to sinter fume, is mainly divided into dry method, semidrying and wet method, although most of energy effective elimination SO
2but investment cost and working cost are huge.The MEROS of Yi Mou Steel Plant sulfur removal technology is example, only a 360m
2nearly 100,000,000 yuan of sintering machine desulfuration plant investment expense, 3,000 ten thousand yuan of left and right of annual operating cost, national big or small sinter machine amounts to 300 left and right, and only desulfurization will consume over ten billion fund, the heavy economical load that allowed iron and steel enterprise's back.Therefore, reform existing sulfur method imperative.
By patent retrieval, existing relevant sintering desulfuration technical scheme is open at present.China Patent No. 99111573.2, the applying date: 1999-08-18, invention and created name is: for the on-line desulphurization method of sintering process, this application case is in raw materials for sintering, to add ammoniation, make it can in sintering process, isolate ammonia and react generation ammonium sulfate with the oxysulfide discharging in sintering process, then with electrostatic precipitator trap sulfur acid ammonium salt, then with dust-collector water wash system, the composition of sulphur is separated from the process of sintering.This application case is directly mixed the compound that urea or ammoniacal liquor etc. can decomposite ammonia in whole raw materials for sintering.
Anhui University of Technology finds in the scientific experiment research through for many years: the method for (1) Chinese Patent Application No. 99111573.2 is all mixed interpolation ammoniation in whole raw materials for sintering, and the weight of the relative raw materials for sintering of weight of ammoniation is micro-, while allocating low ratio additive in sinter mixture, production technique actually operating difficulty is large, may there is the problems such as proportioning fluctuation, cause desulfuration efficiency to decline; (2) ammonia reacts with oxysulfide and produces ammonium sulfate and mainly occur in bed of material middle and lower part, so ammonium sulfate is mainly discharged with flue gas from the bellows of sinter machine posterior part, and this method is all passed through the processing of dust-collector water wash system by all dust-collectors, cause the treatment capacity of water wash system large, and dedusting ash is low containing sulphur concentration, water wash system efficiency step-down, intractability is large.Based on the problems referred to above, the contriver of this patent has proposed denomination of invention in 2011-01-20: the patent application based on adding the desulfurizing method in iron ore sintering process of inhibitor, patent of invention number is: ZL201110022407.0, the sulfur method of this application case is to add ammoniation in the shop fixtures bed of material of sinter bed bottom, in sintering process, the ammonia that ammoniation decomposites reacts the ammonium sulfate generating and is adsorbed in dust and is taken away by flue gas with oxysulfide, dust by the flue gas of sinter machine latter half bellows with tornado dust collector trapping sulfur acid ammonium salt, and by this dedusting ash through washing, filter and be dried and to obtain dry dirt ash, simultaneously by the concentrating filter liquor after filtering, crystallization and the dry ammonium sulfate that to obtain.
The technical scheme of Chinese patent ZL201110022407.0 is to draw based on following theoretical analysis: in sintering process, by adding the ammoniation aqueous solution as inhibitor in the shop fixtures bed of material in sinter bed bottom, in the bed of material, set up the sulfur dioxide emissions barrier of full sintering process, at sinter machine first half, sulfurous gas is absorbed by wet feed layer and inhibitor, good dynamic conditions has been created in the large section absorption long-pending and that low wind speed is sulfurous gas of material bed, and therefore the amount of sulfur contenting in smoke in sinter machine first half bellows is extremely low.In the sinter machine second half section, the bed of material enters after drying and preheating band, and the sulfurous gas in the bed of material is concentrated and discharged, and inhibitor decomposes the ammonia producing and just in time reacts with it.Sulfurous gas and ammonia gas react generate the reaction of ammonium sulfate, its Gibbs free energy raises and increases with temperature, under standard state, when temperature is 527 ℃ over 800K, reaction can not be carried out to the direction that generates ammonium sulfate, and this explanation, in sintering process, the reaction that sulfurous gas and ammonia gas react generate ammonium sulfate will mainly occur in bed of material middle and lower part, so the inhibitor of ammoniation only need be added in the shop fixtures bed of material of the bed of material.For some time before sintering end point arrives, negative pressure is higher, and waste gas flow velocity is slow, and the sufficient reacting that sulfurous gas and ammonia gas react generate ammonium sulfate carries out.
But, by industry spot, test and find that there are the following problems: (1) urea is water-soluble adds full compound can cause agglomerate all technical variation, and along with the increase of urea add-on, decline, to the quality influence of agglomerate large (referring to the comparative example of embodiment); (2) in the water-soluble shop fixtures bed of material that adds sinter bed bottom of urea, also can cause agglomerate all technical variation, and sweetening effectiveness is undesirable.Therefore, the method industry spot application difficulty of China Patent No. 99111573.2,201110022407.0 is large, cannot be applicable to actual sintered operation.
In addition, Chinese Patent Application No. 201310167718.5, the applying date: 2013-05-08, invention and created name is: a kind of novel energy-saving emission-reducing sintering machine system and sintering method, this application case relates to a kind of novel energy-saving emission-reducing sintering machine system, 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 sinter machine are after fragmentation is cooling, successively in finished product screen locellus I, finished product screen locellus II, in finished product screen locellus III, sieve out finished product particle and be delivered to finished product stockyard, in finished product screen locellus III, be unscreened the particle separating and enter proportioning room, the mineral of proportioning room preparation are after urea soln sprays device sprinkling, pass through successively mixed once chamber, secondary mixing section mixes, the mineral that mix are arranged in the indoor sintering that carries out of sinter machine uniformly by mixture distributor device.This application case is sprayed device by urea soln and is sprayed urea soln to raw materials for sintering in one mixed, two mixed transport process, and this application case is for urea soln is sprayed in raw materials for sintering uniformly.
In sum, available technology adopting Wyler's process is controlled the technical scheme of sintering process desulfuration efficiency, mainly rest on that urea is water-soluble to add in full compound or the water-soluble shop fixtures bed of material that adds sinter bed bottom of urea, smelting iron and steel worker is in the sulfur method research of sintering process, all study hotspot is converged in: how urea soln is evenly blended in to (as China Patent No. 201310167718.5) in sinter mixture, it is this technology application difficult point that disclosed technical literature also shows how to be evenly blended in compound, but the present invention finds to have broken this technology prejudice by creativeness.
Utility model content
1. the technical problem that utility model will solve
The purpose of this utility model is to overcome a desulfurization technology difficult problem for sintering process in prior art, a kind of sweetening agent adding apparatus and on-line desulphurization system of sintering process are provided, adopt the technical solution of the utility model, by add sorbent particle thing at specific position, can improve to greatest extent the desulfuration efficiency of sintering process, and can guarantee all technical of agglomerate, on the quality of agglomerate almost without impact.
2. technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
The sweetening agent adding apparatus of a kind of sintering process of the present utility model, comprise sweetening agent feed bin, sweetening agent feeding machine and sweetening agent material guide mechanism, the outlet of described sweetening agent feed bin is connected with the opening for feed of sweetening agent feeding machine, the discharge port of described sweetening agent feeding machine is connected with the feed end of sweetening agent material guide mechanism, and the discharge end of this sweetening agent material guide mechanism is used for discharging sweetening agent.
Furthermore, described sweetening agent material guide mechanism is a charging guide plate, and this charging guide plate tilts to install, and the feed end of charging guide plate is for accepting the sweetening agent of sending from sweetening agent feeding machine discharge port, and the discharge end of charging guide plate is for delivering to pallet by sweetening agent.
Furthermore, also comprise stock stop, described stock stop is positioned at the material stream output of sweetening agent material guide mechanism discharge end, and this stock stop and the folded acute angle of vertical direction are 0-15 degree.
Furthermore, described sweetening agent material guide mechanism is provided with inclined angle regulating mechanism, and this inclined angle regulating mechanism is for regulating the height location of sweetening agent material guide mechanism discharge end.Stock stop in the utility model is a blocking material plate, and described sweetening agent feeding machine is round roller feeding machine.
The on-line desulphurization system of a kind of sintering process of the present utility model, comprise pallet, also comprise sweetening agent adding apparatus, described sweetening agent adding apparatus comprises sweetening agent feed bin, sweetening agent feeding machine and sweetening agent material guide mechanism, the outlet of described sweetening agent feed bin is connected with the opening for feed of sweetening agent feeding machine, the discharge port of described sweetening agent feeding machine is connected with the feed end of sweetening agent material guide mechanism, the discharge end of this sweetening agent material guide mechanism extends in the mixing bed of material of pallet, and the discharge end of sweetening agent material guide mechanism is used for discharging sweetening agent.
Furthermore, the distance of the discharge end of described sweetening agent material guide mechanism and pallet bottom is the 1/8-1/4 of sinter bed total height.
Furthermore, also comprise mixture distributor device and grate-layer material distribution device, described sweetening agent adding apparatus is between mixture distributor device and grate-layer material distribution device.
Furthermore, described sweetening agent material guide mechanism is a charging guide plate, and this charging guide plate tilts to install, and the feed end of charging guide plate is for accepting the sweetening agent of sending from sweetening agent feeding machine discharge port, and the discharge end of charging guide plate is for delivering to pallet by sweetening agent.
Furthermore, described sweetening agent material guide mechanism is provided with inclined angle regulating mechanism, and this inclined angle regulating mechanism is for regulating the height location of sweetening agent material guide mechanism discharge end.
Furthermore, also comprise stock stop, described stock stop is positioned at the material stream output of sweetening agent material guide mechanism discharge end, and this stock stop and the folded acute angle of vertical direction are 0-15 degree.Stock stop in the utility model is a blocking material plate, and sweetening agent feeding machine is round roller feeding machine; Mixture distributor device comprises mixture ore trough, compound feeding machine and mixture distributor device.
3. beneficial effect
The technical scheme that adopts the utility model to provide, compared with prior art, has following unusual effect:
(1) the utility model is by the design to sweetening agent adding apparatus, adopt being used in conjunction with of sweetening agent feed bin, sweetening agent feeding machine and sweetening agent material guide mechanism, sweetening agent is delivered in the mixing bed of material of pallet, thereby carries out place mat effect for the on-line desulphurization of sintering process.
(2) the on-line desulphurization system of a kind of sintering process of the present utility model, sweetening agent adding apparatus is installed in this system, the distance of the discharge end of its sweetening agent material guide mechanism and pallet bottom is the 1/8-1/4 of sinter bed total height, thereby make sweetening agent be laminate structure paving, be added in the mixing bed of material, the cloth precision of sweetening agent is high and uniform and stable; In this patent, sweetening agent, for decompositing the particulate matter of ammonia, makes it possible to improve to greatest extent the desulfuration efficiency of sintering process, and can guarantee all technical of agglomerate, on the quality of agglomerate almost without affecting.
Accompanying drawing explanation
Fig. 1 is the schematic cross-section of sinter bed in the present invention;
Fig. 2 is the structural representation of the on-line desulphurization system of a kind of sintering process in the utility model;
Fig. 3 is the desulfurization degree trend map of embodiment 1 and comparative example 4-20.
In figure: 1, pallet; 21, mixture ore trough; 22, compound feeding machine; 23, mixture distributor device; 31, sweetening agent feed bin; 32, sweetening agent feeding machine; 33, sweetening agent material guide mechanism; 34, stock stop; 4, grate-layer material distribution device; 5, the shop fixtures bed of material; 6, mix the bed of material; 7, sweetening agent layer.
Embodiment
For further understanding content of the present utility model, in conjunction with the accompanying drawings and embodiments the utility model is described in detail.
Embodiment 1
As shown in Figure 1, the on-line desulphurization system of a kind of sintering process of the present embodiment, comprise pallet 1, sweetening agent adding apparatus, mixture distributor device and grate-layer material distribution device 4, described sweetening agent adding apparatus is between mixture distributor device and grate-layer material distribution device 4, and mixture distributor device comprises mixture ore trough 21, compound feeding machine 22 and mixture distributor device 23.
Sweetening agent adding apparatus in the present embodiment comprises sweetening agent feed bin 31, sweetening agent feeding machine 32 and sweetening agent material guide mechanism 33, the outlet of described sweetening agent feed bin 31 is connected with the opening for feed of sweetening agent feeding machine 32, the discharge port of described sweetening agent feeding machine 32 is connected with the feed end of sweetening agent material guide mechanism 33, the discharge end of this sweetening agent material guide mechanism 33 extends in the mixing bed of material 6 of pallet 1, and the discharge end of sweetening agent material guide mechanism 33 is used for discharging sweetening agent.Specifically in the present embodiment, in order to make sweetening agent be added accurately specific position in mixing the bed of material 6, its sweetening agent feeding machine 32 adopts round roller feeding machine, sweetening agent material guide mechanism 33 adopts a charging guide plate, this charging guide plate tilts to install, the feed end of charging guide plate is for accepting the sweetening agent of sending from sweetening agent feeding machine 32 discharge ports, the discharge end of charging guide plate is for delivering to pallet 1 by sweetening agent, and sweetening agent material guide mechanism 33 is provided with inclined angle regulating mechanism, by this inclined angle regulating mechanism, can regulate the height location of sweetening agent material guide mechanism 33 discharge ends, can flexible thereby make sweetening agent be added on the mixing bed of material 6 camber positions.In the utility model for when guaranteeing agglomerate indices, improve to greatest extent the desulfuration efficiency of sintering process, the distance of the discharge end of sweetening agent material guide mechanism 33 and pallet 1 bottom is the 1/8-1/4 of sinter bed total height, specifically sinter bed total height is 800mm in the present embodiment, the distance of the discharge end of sweetening agent material guide mechanism 33 and pallet 1 bottom is 150mm, and sinter bed refers to mix the summation of the bed of material 6 and the shop fixtures bed of material 5.
The on-line desulphurization system of a kind of sintering process of application the present embodiment, its on-line desulphurization method is specific as follows: in the bottom of pallet 1, mat formation and have the shop fixtures bed of material 5, the top that sintering raw mix is laid on to the shop fixtures bed of material 5 forms the mixing bed of material 6, when lay mixing the bed of material 6, in mixing the bed of material 6, be also equipped with sweetening agent layer 7, this sweetening agent layer 7 is the 1/8-1/4 of sinter bed total height with the distance of pallet 1 bottom, and the sweetening agent in this sweetening agent layer 7 is for decompositing the particulate matter of ammonia.Specifically in the present embodiment, sinter bed total height is 800mm, sweetening agent layer 7 is 150mm with the distance H of pallet 1 bottom, sweetening agent in sweetening agent layer 7 is urea granules, and the median size of the urea granules adding is 0.30-0.80mm, this urea granules is commercially available common urea, containing N, be about 46wt%, the quality of urea granules is for mixing 0.833 times of the quality that contains sulphur in the bed of material 6, the present embodiment is learnt by the calculating to sulfur content of raw material, the quality percentage composition that mixes sulphur in the bed of material 6 is 0.06%, therefore the add-on of urea granules is for mixing 0.05% of the bed of material 6 total masses.
After cloth, carry out sintering, sinter mixture is carried out to sintering reaction and become agglomerate, measure the SO of flue gas in sintering process
2quality, and calculate desulfurization degree record as table 1, detecting the technical indicator of agglomerate, record is as table 2.Above-mentioned desulfurization degree calculates the formula adopting:
Desulfurization degree each time=(SO in reference test flue gas
2sO in the flue gas of quality-each time
2quality) SO in/reference test flue gas
2quality * 100%.
SO in the flue gas of table 1 agglutinating test
2quality and desulfurization degree
| ? | SO in flue gas 2Quality (mg) | Desulfurization degree (%) |
| Comparative example 1 | 12610.0 | —— |
| Comparative example 2 | 1877.4 | 85.11 |
| Comparative example 3 | 8492.2 | 32.66 |
| Embodiment 1 | 1227.0 | 90.27 |
Table 2 agglomerate technical indicator
Comparative example 1
This comparative example is as reference test, and the sintering process of this comparative example is with embodiment 1, and difference is: mix in the bed of material 6 and do not lay sweetening agent layer 7.Measure the SO of flue gas in sintering process
2quality, and calculate desulfurization degree record as table 1, detecting the technical indicator of agglomerate, record is as table 2.
Comparative example 2
This comparative example is that sweetening agent is configured to solution mixed adding in the mixing bed of material 6 entirely, the sintering process of this comparative example is with embodiment 1, difference is: by the water-soluble urea soln that is configured to of urea granules, the add-on of urea granules is for mixing 0.05% of the bed of material 6 total masses, urea soln is mixed in cylindrical mixer with compound, and then cloth is on pallet 1.Measure the SO of flue gas in sintering process
2quality, and calculate desulfurization degree record as table 1, detecting the technical indicator of agglomerate, record is as table 2.
Comparative example 3
This comparative example is that urea granules is added in the shop fixtures bed of material 5, and the sintering process of this comparative example is with embodiment 1, and difference is: get urea granules mixing and be added in the shop fixtures bed of material 5, the add-on of urea granules is for mixing 0.05% of the bed of material 6 total masses.Measure the SO of flue gas in sintering process
2quality, and calculate desulfurization degree record as table 1, detecting the technical indicator of agglomerate, record is as table 2.
Analysis by his-and-hers watches 1 can obtain, and urea granules is added to while testing on the shop fixtures bed of material 5, and its desulfurization degree is lower, it is only 32.66% left and right, do not reach the object that desulfurization reduces discharging, reason may be because urea granules is easily taken away by suction pressure, thereby causes sweetening effectiveness not remarkable.The agglomerate technical indicator of his-and-hers watches 2 is analyzed again, urea granules is added to while testing on the shop fixtures bed of material 5, although the yield rate of agglomerate is slightly improved, but the productivity of agglomerate, sintering rate reduce greatly, the desulfurization degree Comprehensive Correlation of associative list 1, the scheme commerical test of comparative example 3 is infeasible, does not reach desirable sweetening effectiveness.
The technical scheme that adopts comparative example 2, desulfurization degree is 85.11%, but the yield rate of agglomerate is only 61.73%, havoc the quality of agglomerate, and the productivity of agglomerate, barrate strength are all undesirable, industrial application value is low.
While adopting as can be found from Table 2 the scheme of embodiment 1 to test, all technical of agglomerate is substantially constant, and on the almost not impact of the quality of agglomerate, and it is higher to depart from efficiency, approximately reaches 90.27%.Therefore, applicant proposes urea granules to join the specific position mixing in the bed of material 6, thereby improves to greatest extent sintering desulfuration efficiency, and can guarantee that agglomerate all technical is unaffected, for follow-up blast furnace ironmaking provides safeguard.What need to clearly state is herein, technical scheme based on Chinese invention patent ZL201110022407.0, applicant is in engineering test before, which kind of mode is exploring urea adopts join in the shop fixtures bed of material can to improve to greatest extent the desulfurization degree of commerical test always, and can guarantee the quality of agglomerate, the mode of employing comprises: 1) in grate-layer material, add urea granules; 2) in grate-layer material, spray urea soln; 3) change the mineral mix proportion scheme of sintering raw mix; 4) carbon content in increase compound etc., still, test many times all cannot obtain desirable result.Test proceeds to this, and the quality that how to improve desulfurization degree and can guarantee agglomerate in commerical test has become whole test group to thirst for solving but the technical barrier of failing all the time to succeed always.Accidentally, applicant is once adding in the test of urea granules in grate-layer material, because operator's error has been added on urea granules the top of grate-layer material because of carelessness, be positioned at the middle and lower part of mixing the bed of material, the integrity of applicant in order to test, carried out normally sintering operation, but according to the calculating of desulfurization degree, its desulfurization degree of discovery that applicant is surprised has reached 90.02% unexpectedly, applicant has done the sinter quality of this test the detection of indices subsequently, find that its yield rate is 65.83%, its barrate strength is 67.12%, these two indexs meet normal agglomerate index completely, this is the change of " matter ".Applicant has been given in this discovery greatest surprised, based on this, find that applicant confirms that through experiment more frequently certain specific position in mixing the bed of material adds urea granules, can solve cleverly and add the difficult problem that urea sweetening agent affects sinter quality, therefore application the present invention.
Following is the comparative example that sweetening agent layer 7 is added in certain height position in mixing the bed of material 6, and the add-on of urea granules is for mixing 0.833 times of the quality that contains sulphur in the bed of material 6.
Comparative example 4
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 70mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality declines to some extent, and its desulfurization degree is 45.07%.
Comparative example 5
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 80mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality declines to some extent, and its desulfurization degree is 62.34%.
Comparative example 6
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 90mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality declines to some extent, and its desulfurization degree is 70.06%.
Comparative example 7
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 100mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality is not impact almost, and its desulfurization degree is 86.31%.
Comparative example 8
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 120mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality is not impact almost, and its desulfurization degree is 87.28%.
Comparative example 9
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 140mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality is not impact almost, and its desulfurization degree is 90.89%.
Comparative example 10
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 160mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality is not impact almost, and its desulfurization degree is 90.46%.
Comparative example 11
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 180mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality is not impact almost, and its desulfurization degree is 87.07%.
Comparative example 12
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 200mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality is not impact almost, and its desulfurization degree is 86.77%.
Comparative example 13
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 230mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality declines to some extent, and its desulfurization degree is 70.96%.
Comparative example 14
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 290mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality declines to some extent, and its desulfurization degree is 66.05%.
Comparative example 15
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 350mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality declines to some extent, and its desulfurization degree is 61.34%.
Comparative example 16
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 450mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality declines to some extent, and its desulfurization degree is 59.2%.
Comparative example 17
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 550mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality declines to some extent, and its desulfurization degree is 60.01%.
Comparative example 18
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 650mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality declines to some extent, and its desulfurization degree is 60.16%.
Comparative example 19
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 700mm with the distance H of pallet 1 bottom.After test, detect the technical indicator of agglomerate, sinter quality declines to some extent, and its desulfurization degree is 57.23%.
Comparative example 20
The primary process of the on-line desulphurization method of this comparative example is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 800mm with the distance H of pallet 1 bottom, is added on the upper surface that mixes the bed of material 6.After test, detect the technical indicator of agglomerate, sinter quality declines to some extent, and its desulfurization degree is 45.28%.
As shown in Figure 3, as can be known from Fig. 3, along with the increase of sweetening agent layer 7 with the distance H of pallet 1 bottom, desulfurization degree increases the desulfurization degree statistics of embodiment 1 and comparative example 4-20 thereupon, and when H=90mm, its desulfurization degree is 70.06%; When the distance H of sweetening agent layer 7 and pallet 1 bottom is during at 100-200mm interval, desulfurization degree is at 86.31%-90.89%; When sweetening agent layer 7 and the distance H of pallet 1 bottom surpass after 200mm, desulfurization degree is reduced to below 70.96% rapidly.Hence one can see that, when in the present invention, sinter bed total height is 800mm, during distance H=the 100-200mm of sweetening agent layer 7 and pallet 1 bottom, its desulfurization degree has the leap of " matter ", when the distance that sweetening agent layer 7 and pallet 1 bottom be described is the 1/8-1/4 of sinter bed total height, its desulfurization degree is best, and can guarantee all technical of agglomerate.In the patent document of Chinese patent ZL201110022407.0 from theoretical angle detailed analysis grate-layer material, to add urea be best selection, but by testing and verification of the present invention, at the certain height layer that mixes the bed of material 6, add urea granules, rather than join in whole compound, broken the technology prejudice in existing document completely, not only reduced greatly cost, and the SO effectively setting up
2the barrier of discharge, has improved the efficiency and the effect that reduce discharging, and key is the almost not significantly impact of Sintering Operation Index index.At present, organized repeatedly symposial, not yet found that technical scheme of the present invention produces so surprising technique effect, how on earth its know-why need further research.
Embodiment 2
The on-line desulphurization system of a kind of sintering process of the present embodiment, its basic structure is with embodiment 1, difference is: also comprise stock stop 34, stock stop 34 is positioned at the material stream output of sweetening agent material guide mechanism 33 discharge ends, specifically stock stop 34 is a blocking material plate in the present embodiment, this blocking material plate is positioned at the material stream output of sweetening agent material guide mechanism 33 discharge ends, be used for blocking compound, while making it possible to further guarantee that sweetening agent arrives the discharge end of sweetening agent material guide mechanism 33, accurately arrived the height of appointment, the height of appointment can be regulated by inclined angle regulating mechanism, height location adjustment mechanism is installed on the blocking material plate in the present embodiment, to facilitate with the change of sweetening agent material guide mechanism 33 gradients, adjust, and this stock stop 34 is 15 degree with the folded acute angle of vertical direction.
The on-line desulphurization method of a kind of sintering process of the present embodiment, its primary process is with embodiment 1, difference is: sinter bed total height is 800mm, sweetening agent layer 7 is 140mm with the distance H of pallet 1 bottom, and the quality of sweetening agent layer 7 is for mixing 0.9 times of the quality that contains sulphur in the bed of material 6.After test, detect the technical indicator of agglomerate, its indices, substantially with embodiment 1, illustrates that agglomerate all technical is influenced hardly, and its desulfurization degree is 90.93%.
Embodiment 3
The on-line desulphurization system of a kind of sintering process of the present embodiment, its basic structure is with embodiment 2, and difference is: stock stop 34 is 10 degree with the folded acute angle of vertical direction.The primary process of its on-line desulphurization method is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 120mm with the distance H of pallet 1 bottom, and the quality of sweetening agent layer 7 contains the identical in quality of sulphur for mixing in the bed of material 6.After test, detect the technical indicator of agglomerate, its indices, substantially with embodiment 1, illustrates that agglomerate all technical is influenced hardly, and its desulfurization degree is 87.25%.
Embodiment 4
The on-line desulphurization system of a kind of sintering process of the present embodiment, its basic structure is with embodiment 2, and difference is: stock stop 34 vertically arranges.The primary process of its on-line desulphurization method is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 100mm with the distance H of pallet 1 bottom, and the quality of sweetening agent layer 7 is for mixing 0.8 times of the quality that contains sulphur in the bed of material 6.After test, detect the technical indicator of agglomerate, its indices, substantially with embodiment 1, illustrates that agglomerate all technical is influenced hardly, and its desulfurization degree is 86.27%.
Embodiment 5
The on-line desulphurization system of a kind of sintering process of the present embodiment, its basic structure is with embodiment 2.The primary process of its on-line desulphurization method is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 160mm with the distance H of pallet 1 bottom, and the quality of sweetening agent layer 7 is for mixing 0.7 times of the quality that contains sulphur in the bed of material 6.After test, detect the technical indicator of agglomerate, its indices, substantially with embodiment 1, illustrates that agglomerate all technical is influenced hardly, and its desulfurization degree is 90.41%.
Embodiment 6
The on-line desulphurization system of a kind of sintering process of the present embodiment, its basic structure is with embodiment 2.The primary process of its on-line desulphurization method is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 180mm with the distance H of pallet 1 bottom, and the quality of sweetening agent layer 7 is for mixing 1.4 times of the quality that contains sulphur in the bed of material 6.After test, detect the technical indicator of agglomerate, its indices, substantially with embodiment 1, illustrates that agglomerate all technical is influenced hardly, and its desulfurization degree is 87.11%.
Embodiment 7
The on-line desulphurization system of a kind of sintering process of the present embodiment, its basic structure is with embodiment 2.The primary process of its on-line desulphurization method is with embodiment 1, and difference is: sinter bed total height is 800mm, and sweetening agent layer 7 is 200mm with the distance H of pallet 1 bottom, and the quality of sweetening agent layer 7 is for mixing 1.8 times of the quality that contains sulphur in the bed of material 6.After test, detect the technical indicator of agglomerate, its indices, substantially with embodiment 1, illustrates that agglomerate all technical is influenced hardly, and its desulfurization degree is 86.75%.
Existing calcium backbone method, amino wet method and technical scheme of the present invention are contrasted, and its investment cost, annual operating cost, relative merits are in Table 3.
Table 3 calcium backbone method, amino wet method and contrast table of the present invention
| ? | Investment cost/ten thousand yuan | Annual operating cost/ten thousand yuan | Relative merits |
| Calcium backbone method | 8000-10000 | 2500-3000 | Investment and working cost are large, and by product is difficult |
| Amino wet method | 5000-7000 | 2000-3000 | Investment and working cost are large, and secondary pollution is serious, corrosive equipment |
| Urea on-line method | 400-800 | 500-700 | Only need to increase urea adding apparatus and ammonium sulfate retrieving arrangement |
Claims (10)
1. a sweetening agent adding apparatus for sintering process, is characterized in that:
Comprise sweetening agent feed bin (31), sweetening agent feeding machine (32) and sweetening agent material guide mechanism (33), the outlet of described sweetening agent feed bin (31) is connected with the opening for feed of sweetening agent feeding machine (32), the discharge port of described sweetening agent feeding machine (32) is connected with the feed end of sweetening agent material guide mechanism (33), and the discharge end of this sweetening agent material guide mechanism (33) is used for discharging sweetening agent.
2. the sweetening agent adding apparatus of a kind of sintering process according to claim 1, it is characterized in that: described sweetening agent material guide mechanism (33) is a charging guide plate, this charging guide plate tilts to install, the feed end of charging guide plate is used for accepting the sweetening agent of sending from sweetening agent feeding machine (32) discharge port, and the discharge end of charging guide plate is for delivering to pallet (1) by sweetening agent.
3. the sweetening agent adding apparatus of a kind of sintering process according to claim 1, it is characterized in that: also comprise stock stop (34), described stock stop (34) is positioned at the material stream output of sweetening agent material guide mechanism (33) discharge end, and this stock stop (34) is 0-15 degree with the folded acute angle of vertical direction.
4. according to the sweetening agent adding apparatus of a kind of sintering process described in claim 1 or 2 or 3, it is characterized in that: described sweetening agent material guide mechanism (33) is provided with inclined angle regulating mechanism, and this inclined angle regulating mechanism is used for regulating the height location of sweetening agent material guide mechanism (33) discharge end.
5. an on-line desulphurization system for sintering process, comprises pallet (1), it is characterized in that:
Also comprise sweetening agent adding apparatus, described sweetening agent adding apparatus comprises sweetening agent feed bin (31), sweetening agent feeding machine (32) and sweetening agent material guide mechanism (33), the outlet of described sweetening agent feed bin (31) is connected with the opening for feed of sweetening agent feeding machine (32), the discharge port of described sweetening agent feeding machine (32) is connected with the feed end of sweetening agent material guide mechanism (33), the discharge end of this sweetening agent material guide mechanism (33) extends in the mixing bed of material (6) of pallet (1), and the discharge end of sweetening agent material guide mechanism (33) is used for discharging sweetening agent.
6. the on-line desulphurization system of a kind of sintering process according to claim 5, is characterized in that: the distance of the discharge end of described sweetening agent material guide mechanism (33) and pallet (1) bottom is the 1/8-1/4 of sinter bed total height.
7. the on-line desulphurization system of a kind of sintering process according to claim 5, it is characterized in that: also comprise mixture distributor device and grate-layer material distribution device (4), described sweetening agent adding apparatus is positioned between mixture distributor device and grate-layer material distribution device (4).
8. the on-line desulphurization system of a kind of sintering process according to claim 5, it is characterized in that: described sweetening agent material guide mechanism (33) is a charging guide plate, this charging guide plate tilts to install, the feed end of charging guide plate is used for accepting the sweetening agent of sending from sweetening agent feeding machine (32) discharge port, and the discharge end of charging guide plate is for delivering to pallet (1) by sweetening agent.
9. the on-line desulphurization system of a kind of sintering process according to claim 8, it is characterized in that: described sweetening agent material guide mechanism (33) is provided with inclined angle regulating mechanism, and this inclined angle regulating mechanism is used for regulating the height location of sweetening agent material guide mechanism (33) discharge end.
10. according to the on-line desulphurization system of a kind of sintering process described in claim 5 or 6 or 7 or 8, it is characterized in that: also comprise stock stop (34), described stock stop (34) is positioned at the material stream output of sweetening agent material guide mechanism (33) discharge end, and this stock stop (34) is 0-15 degree with the folded acute angle of vertical direction.
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| CN201420135433.3U CN203728895U (en) | 2014-03-21 | 2014-03-21 | Desulfurization agent adding device and on-line desulfurization system used in sintering process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103937958A (en) * | 2014-03-21 | 2014-07-23 | 安徽工业大学 | Apparatus for adding desulfurizer during sintering process and on-line desulphurization system |
| CN104536410A (en) * | 2014-12-22 | 2015-04-22 | 山东应天节能环保科技有限公司 | Intelligent detecting device for desulfurization and denitrification additives |
| CN107980685A (en) * | 2017-12-28 | 2018-05-04 | 安徽工业大学 | A kind of water surface autonomous cruise formula solar energy bait-throwing-in boat and method |
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2014
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103937958A (en) * | 2014-03-21 | 2014-07-23 | 安徽工业大学 | Apparatus for adding desulfurizer during sintering process and on-line desulphurization system |
| CN104536410A (en) * | 2014-12-22 | 2015-04-22 | 山东应天节能环保科技有限公司 | Intelligent detecting device for desulfurization and denitrification additives |
| CN107980685A (en) * | 2017-12-28 | 2018-05-04 | 安徽工业大学 | A kind of water surface autonomous cruise formula solar energy bait-throwing-in boat and method |
| CN107980685B (en) * | 2017-12-28 | 2023-04-28 | 安徽工业大学 | Water surface autonomous cruising type solar bait casting method |
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