CN105344228A - Ammonia-process H2O2 oxidation and denitration apparatus for flue gas of sintering machine - Google Patents
Ammonia-process H2O2 oxidation and denitration apparatus for flue gas of sintering machine Download PDFInfo
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- CN105344228A CN105344228A CN201510823151.1A CN201510823151A CN105344228A CN 105344228 A CN105344228 A CN 105344228A CN 201510823151 A CN201510823151 A CN 201510823151A CN 105344228 A CN105344228 A CN 105344228A
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Abstract
The invention discloses an ammonia-process H2O2 oxidation and denitration apparatus for flue gas of a sintering machine. The ammonia-process H2O2 oxidation and denitration apparatus comprises an oxidizing agent double-fluid jet device, which comprises a H2O2 solution storage tank, a compressed air storage tank and a first double-fluid spray gun and a second double-fluid spray gun both communicated with the H2O2 solution storage tank and the compressed air storage tank; a reaction and absorption device, which comprises an oxidation reaction flue, wherein the first double-fluid spray gun goes deep into the oxidation reaction flue from an upper end; a green reaction tower, which carried out ammonia absorption, wherein preliminarily treated flue gas of the sintering machine is sent to the bottom of the green reaction tower by the oxidation reaction flue through a pipeline, the second double-fluid spray gun goes deep into the oxidation reaction flue from a side end, and the upper end of the green reaction tower is connected with an aqueous ammonia solution storage tank which is provided with a spray gun; and a waste discharging and gathering device. The ammonia-process H2O2 oxidation and denitration apparatus provided by the invention can efficiently reduce emission of nitrogen oxides in sintering flue gas and realizes no pollution and zero emission.
Description
Technical field
The present invention relates to ammonia process oxidation and denitration technical field, be specifically related to a kind of sintering device flue gas ammonia process H
2o
2oxidation and denitration device.
Background technology
Containing NO in most industrial smoke
x, they are discharged in air in a large number, not only form acid rain, damage the ozone layer, and cause greenhouse effects to cause global warming.Steel industry is as an important component part of National Industrial, and country is to its environmental requirement also increasingly stringent.Research shows, the NO that in steel industry, various equipment is released
xtotal amount is fixed in occurring source in pollutant emission and is accounted for second, is only second to SO
2discharge capacity.Wherein, sintering production process NO
xdischarge capacity accounts for steel industry NO
xabout the half of total emission volumn, along with the fast development of iron and steel enterprise, Sintering Yield increases considerably, NO
xdischarge capacity increases thereupon, and the pressure of sintering plant environmental protection also increases thereupon.Therefore, to sintering device flue gas NO
xthe strict control of discharge capacity, under increasingly serious environmental protection pressure, puts on efforts at environmental protection schedule gradually.
Sintering process is the complicated physical and chemical process under a high-temp combustion condition, is drawn into the fuel generation combustion reaction in the air of the bed of material and compound, and the heat of burning release ensures the carrying out of sintering physical and chemical process, and the flue gas of burning is as toxic emission.In steel sintering industry, nitrogen mainly exists with the form of nitrate and organic nitrogen, and nitrate mainly comes from Iron Ore Powder, and organic nitrogen then mainly comes from solid fuel.The nitrogen existed with simple substance or compound form in sintering process discharges with the form of gaseous oxygen compound usually in the oxidation reaction, then discharges with the form of gaseous oxygen compound in decomposition reaction with the nitrogen that acid addition salt exists.
At present, NO in flue gas
xthe mode that removes mainly is divided into combustion process to remove and removes two kinds of modes after burning.Burning removing sulfuldioxide is mainly low NO
xcombustion technology, comprises low NO, fractional combustion etc.Remove current coal-burning power plant after burning and adopt selective catalytic reduction (SCR) and SNCR method (SNCR).But be directed to sintering industry, these methods all have significantly not enough and inadaptability.Burner and the burning method of salary distribution of sintering industry have the feature of himself, and traditional low NO and grading combustion technology are not suitable for sintering machine industry.And sintering machine rear portion flue space is limited, the catalyst in SCR technique cannot be arranged, and in sinter fume composition, content of beary metal is very high, very easily causes catalysqt deactivation; SNCR reaction temperature window is 850 ~ 1100 DEG C, and this temperature window is difficult to realize in sintering industry, because in sintering machine, this temperature is positioned at sintering machine inside, due to himself design feature, can not spray into ammonia to sintering machine inside.Therefore the NO of development of new is badly in need of for sintering machine
xremoving process, to guarantee that its pollutant emission meets environmental protection relevant regulations.
Publication No. is refer to a kind of ozone and the denitrating technique of hydrogen peroxide synergistic oxidation in conjunction with wet absorption in the Chinese invention patent of CN102343212A, although adopt ozone and hydrogen peroxide concerted reaction can strengthen both oxidisability, oxidation removal for nitrogen oxide and oxysulfide is all helpful, but ozone is different from hydrogen peroxide oxidation reaction of nitrogen oxides temperature range, simultaneous reactions is difficult to reach good effect, and this technique can generate containing nitrate wastewater, and subsequent treatment greatly increases cost.Meanwhile, the introducing of ozone can increase oxygen generating plant, a series of equipment investment such as ozone generator, runs the height that power consumption is also suitable, greatly reduces the economy of this technique.
Publication No. is the oxidation and denitration new technology that the Chinese invention patent of CN103191634A refer to a kind of low cost, and limewash and chlorine are that raw material is formulated as oxidant and absorbent, antioxidant nitroxide by this technique, utilize alkali lye character to absorb.Although this technique flow process is simple, operating cost is lower, and there is larger problem is sprayed into a large amount of chlorine, and chloride ion corrosion will cause very serious corrosion to metal structure, in Practical Project uses, have operability hardly.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of sintering device flue gas ammonia process H
2o
2oxidation and denitration device, can reduce sintered fume nitric oxide discharge efficiently, realize pollution-free zero-emission, good conformity sintering industry smoke components is complicated; Meanwhile, react occurrence condition by conservative control, control reaction occurring mode and process, greatly saved H
2o
2consumption, improves process economy.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of sintering device flue gas ammonia process H
2o
2oxidation and denitration device, comprising:
One oxidant two-fluid injection apparatus, described oxidant two-fluid injection apparatus comprises a H
2o
2solution reservoir, a compressed air reservoir, and one is communicated with described H
2o
2first two-fluid spray gun of solution reservoir and compressed air reservoir and the second two-fluid spray gun,
One reactive absorption device, described reactive absorption device comprises a reaction oxidation reaction flue, and described first two-fluid spray gun deeply reacts in oxidation reaction flue 3 from upper end;
The one green reaction tower carrying out ammonia absorption, the sintering device flue gas just processed is delivered to the bottom of a green reaction tower by described reaction oxidation reaction flue by pipeline, described second two-fluid spray gun gos deep in green reaction tower from side, and the upper end of described green reaction tower connects the ammonia spirit storage tank that is provided with spray gun;
And a waste discharge gathering-device, described waste discharge gathering-device comprises an absorbing liquid collecting pit be connected with green reaction tower bottom, and the chimney of a clean flue gas for discharge standard be connected with green reaction tower.
In a preferred embodiment of the invention, described H
2o
2h in solution reservoir
2o
2mass concentration scope is 10% ~ 50%.
In a preferred embodiment of the invention, the smoke reaction temperature in described reaction oxidation reaction flue is 400 ~ 500 DEG C.
In a preferred embodiment of the invention, in green reaction tower, ammonia spirit sprays from reaction tower top by spray equipment atomization, flue gas enters reaction tower from reaction tower bottom, ammoniacal liquor and flue gas reverse flow, react fully and carry out, and in reaction tower, temperature controls is 50 DEG C ± 5 DEG C.
In a preferred embodiment of the invention, the ammoniacal liquor mass concentration 1% ~ 30% in described ammonia spirit storage tank.
By technique scheme, the invention has the beneficial effects as follows:
The present invention can reduce sintered fume nitric oxide discharge efficiently, realizes pollution-free zero-emission, and good conformity sintering industry smoke components is complicated; Meanwhile, new technology reacts occurrence condition by conservative control, controls reaction occurring mode and process, has greatly saved H
2o
2consumption, improves process economy.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
With reference to Fig. 1, a kind of sintering device flue gas ammonia process H
2o
2oxidation and denitration device, comprising: oxidant two-fluid jet system, reactive absorption system, waste discharge gathering system three parts.
Oxidant two-fluid jet system is primarily of H
2o
2solution reservoir 1, compressed air supply system, as compressed air reservoir 2, two-fluid spray gun 4 and associated pump valve instrument composition, by regulating suitable solution and air mass flow ratio, make both flow through two-fluid spray gun and good atomization.H
2o
2there is severe corrosive, therefore H
2o
2solution reservoir, conveyance conduit should adopt can effective anticorrosive, as fiberglass, polyethylene, 304 stainless steels etc.
Reactive absorption system comprises reaction oxidation reaction flue 3, ammonia spirit storage tank 5 and green reaction tower 6, and wherein in oxidation reaction flue 3, flue-gas temperature window is 400 ~ 500 DEG C, at this temperature, and H
2o
2nO can be generated with NO sound response
2, obtain higher conversion ratio, reduce H
2o
2use amount, improves economy.For choosing of reaction flue, in steel industry sintering machine, this temperature window is mainly positioned at sintering machine cooler high temperature section waste gas flue place.In green reaction tower, ammonia spirit is from reaction tower top by spray equipment atomization ejection, and flue gas enters reaction tower from reaction tower bottom, ammoniacal liquor and flue gas reverse flow, react fully and carry out, in reaction tower, temperature controls is 50 DEG C ± 5 DEG C, ensures that sufficient reacting efficiently carries out.Meanwhile, a certain amount of H is sprayed in reaction tower inside by two-fluid spray gun
2o
2, prevent 3NO
2+ H
2o---2HNO
3the a large amount of generation of+NO reaction, NO
2transform to NO, reduce removal efficiency.NO is not only by green reaction tower
xthe consersion unit removed, meanwhile, also has good facilitation for removing of other pollutants such as solid tiny particle.
Waste discharge gathering system is for discharging the rear flue gas of purification and collecting ammonia absorption solution, this system comprises ammonia absorption liquid collecting pit and chimney, carry out being collected by ammonia absorption liquid collecting pit after the liquid after having reacted is discharged from reaction tower bottom through green reaction tower and flue gas, and discharge carry out harmless treatment in collecting pit after; The clean flue gas reaching discharge standard that reaction tower top is discharged is through smoke stack emission.
This technique by following technical process and reaction mechanism as follows:
1, H
2o
2be atomized with compressed air
H
2o
2can fully react with NO, ensure a higher reaction efficiency, good atomizing effect be necessary guarantee, and in this technique, compressed air pressure is 0.4 ~ 0.6Mpa, with H
2o
2good atomization can be realized after two-fluid spray gun, average grain diameter be 80 ~ 200 μm along with dust content difference, optimum grain-diameter also has difference.
As preferably, H
2o
2concentration of polymer solution is 27.5%, when concentration is lower, sprays into H
2o
2amount of solution is large, can affect the efficiency of sintering machine rear portion cooler and other waste-heat recovery devices, excessive concentration, H
2o
2solution cost improves rapidly, reduces the economy of this technique.
Table 1H
2o
2concentration of polymer solution reduces with sintering machine efficiency, and denitration cost contrasts
| H 2O 2Concentration of polymer solution | 15％ | 27.5％ | 35％ | 50％ |
| Efficiency reduces | 0.068％ | 0.042 | 0.035 | 0.027 |
| H 2O 2Solution cost (yuan/ton) | 950 | 1050 | 2100 | 2450 |
Can be found out, along with H by table 1 experimental result
2o
2concentration of polymer solution improves, and the efficiency of sintering machine rear portion cooler and other waste-heat recovery devices reduces gradually, but denitration cost significantly improves, comprehensive two experimental results/can be calculated, as preferably, and H
2o
2when concentration of polymer solution is 27.5%, this process synthesis income is the highest.
27.5% concentration H
2o
2solution is widely used in each industrial process, can reduce other mixed process simultaneously, reduces complex process degree.
2, NO oxidizing process
H after two-fluid spray gun is well atomized
2o
2spray in 400 ~ 500 DEG C of flues, NO is oxidized to NO
2, this temperature range is the best temperature window of oxidation effectiveness, can realize H
2o
2the reaction efficiency of more than 90%, it is as follows that it reacts overall equation:
H
2O
2+NO——NO
2+H
2O
This oxidizing process is by control H
2o
2the NOx oxidation 50% that reacting dose will need to remove, but not complete oxidation, this is the feature place of this technique.After oxidizing process, flue gas enters next course of reaction.
3, ammonia absorption reaction process
After flue gas enters Green absorption tower, under ammonia spray effect, NO, NO
2following absorption reaction is there is with ammoniacal liquor:
NO+NO
2+2NH
3·H
2O——2NH
4NO
2+H
2O
This reaction occurrence temperature is 50 DEG C ± 5 DEG C, and according to the theory for correlated response in " element chemistry ", and utilization this reaction known in some chemical enginnering processes is carried out rapidly, and reaction conversion ratio is high, can ensure the NO of more than 95%
xby ammonia absorption.
In addition ammoniacal liquor is sprayed into herein to SO
2there is certain absorption, acid contaminant content in flue gas can be reduced.
As preferably, ammonia concn is 10 ~ 20%, and this ammonia concn can reduce pollutant and reveal the harm that may bring under the prerequisite keeping good absorption efficiency, and this concentration range ammoniacal liquor price inexpensively, can ensure higher economy simultaneously.(as shown in table 2)
The same absorption efficiency of ammonia concn selected by table 2, reveals the harm table of comparisons
| Ammonia concn | 0～10％ | 10～20％ | 20～50％ | 50～100％ |
| Absorption efficiency | 42.56％ | 81.78％ | 85.62％ | 88.39％ |
| Reveal harm | Low | Low | Higher | High |
4, NH
4nO
2decomposable process
NH
4nO
2compound characteristics is: dry low temperature is easily preserved, soluble in water, and be heated to about 50 DEG C and intensive decomposition reaction occurs, course of reaction is as follows:
NH
4NO
2——N
2↑+2H
2O
This process is swift in response in Green absorption tower bottom, can realize NH4NO2 and decompose completely, and reaction product is N
2and water, accomplish harmless treatment.
5, thing discharge collection process is contaminated
Clean flue gas after treatment enters smoke stack emission subsequently, and the absorbing liquid after absorption reaction is collected by absorbing liquid collecting pit, carries out purified treatment subsequently or recycles.
Present invention process is compared with other denitrating techniques, and the advantage had is: economy is higher, and equipment investment is little, and operation maintenance is simple; Denitration efficiency is high, can realize more than 90% denitration efficiency; Technological adaptability is strong, and this technological reaction temperature window is low, and structure is simple, except can be good at the feature adapting to sinter fume, is also suitable for for other denitrating flue gas; Really realize no pollution discharge, need the NO transformed
xfinally change N into
2and water, to environment without harm.
Present invention process and other processing performances and economic comparison as shown in table 3.
The various method of denitration performance of table 3 and economic comparison
Process system is as shown in Figure 1 adopted to realize the novel ammonia process H of the present invention
2o
2oxidation and denitration technique, finite concentration ammoniacal liquor 1 ~ 30%, preferred concentration range be 10 ~ 20% and compressed air preferred pressure be that 0.4 ~ 0.6Mpa is after the effect of two-fluid spray gun mixed aerosol, spray into 400 ~ 500 DEG C of flue gases duct, NO oxidation reaction is realized in flue inside, flue gas enters Green absorption tower after miscellaneous part subsequently, and absorption tower internal temperature control is 50 DEG C ± 5 DEG C, under absorption tower sprays into ammoniacal liquor preferred concentration 10 ~ 20% absorption reaction, be converted into NH
4nO
2, NH subsequently
4nO
2there is decomposition reaction, generate N
2and water, realize no pollution discharge.
Embodiment 1
With certain project exhaust gas volumn 500000Nm
3/ h, NOx content 300mg/Nm
3, denitration target efficiency is 60%, utilizes Green absorption tower to spray into ammonia absorption mode, to one for steel industry sintering device flue gas ammonia process H
2o
2oxidation and denitration technique is analyzed.When adopting new technology, consumption of raw materials is as shown in table 4, and economic analysis is as shown in table 4.
Table 4H
2o
2novel oxidized method consumption of raw materials
| Quantity | Computational methods | Remarks | |
| Exhaust gas volumn Nm 3/h | 500000 | ||
| Design NO 2mg/m3 | 300 | ||
| Discharge NO 2mg/m3 | 120 | ||
| Remove NO 2mg/m3 | 180 | 300-120 | |
| Take off and fall NO 2Equivalent N Omg/m3 | 117.4 | 180*30/46 | |
| The de-NO that falls measures kg/h | 58.7 | 500000*117.4/1000000 | |
| Theoretical H 2O 2kg/h | 33.2 | 58.7*1.13*0.5 | Oxidation NO50% |
| Design margin H 2O 2 | 10％ | ||
| The total H of boiler 2O 2kg/h | 36.5 | 33.2*1.1 | |
| The total H of boiler 2O 2kg/h | 132.7 | H 2O 2Mass concentration 27.5% | |
| Theoretical ammonia consumption kg/h | 75.5 | 58.7*1.17*1.1 | Design margin 10% |
| Ammoniacal liquor consumption kg/h | 755 | Ammonia concn 10% |
Table 5H
2o
2novel oxidized method economic analysis
Practice shows, when adopting this technique, denitration efficiency can reach more than 60%, meets target call.From equipment investment and operating cost, new technology is also lower than other denitrating techniques.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (5)
1. a sintering device flue gas ammonia process H
2o
2oxidation and denitration device, is characterized in that, comprising:
One oxidant two-fluid injection apparatus, described oxidant two-fluid injection apparatus comprises a H
2o
2solution reservoir, a compressed air reservoir, and one is communicated with described H
2o
2first two-fluid spray gun of solution reservoir and compressed air reservoir and the second two-fluid spray gun,
One reactive absorption device, described reactive absorption device comprises a reaction oxidation reaction flue, and described first two-fluid spray gun deeply reacts in oxidation reaction flue from upper end;
The one green reaction tower carrying out ammonia absorption, the sintering device flue gas just processed is delivered to the bottom of a green reaction tower by described reaction oxidation reaction flue by pipeline, described second two-fluid spray gun gos deep in green reaction tower from side, and the upper end of described green reaction tower connects the ammonia spirit storage tank that is provided with spray gun;
And a waste discharge gathering-device, described waste discharge gathering-device comprises an absorbing liquid collecting pit be connected with green reaction tower bottom, and the chimney of a clean flue gas for discharge standard be connected with green reaction tower.
2. a kind of sintering device flue gas ammonia process H according to claim 1
2o
2oxidation and denitration device, is characterized in that, described H
2o
2h in solution reservoir
2o
2mass concentration scope is 10% ~ 50%.
3. a kind of sintering device flue gas ammonia process H according to claim 1
2o
2oxidation and denitration device, is characterized in that, the smoke reaction temperature in described reaction oxidation reaction flue is 400 ~ 500 DEG C.
4. a kind of sintering device flue gas ammonia process H according to claim 1
2o
2oxidation and denitration device, is characterized in that, in green reaction tower, ammonia spirit is from reaction tower top by spray equipment atomization ejection, and flue gas enters reaction tower from reaction tower bottom, ammoniacal liquor and flue gas reverse flow, react fully and carry out, in reaction tower, temperature controls is 50 DEG C ± 5 DEG C.
5. a kind of sintering device flue gas ammonia process H according to claim 1
2o
2oxidation and denitration device, is characterized in that, the ammoniacal liquor mass concentration 1% ~ 30% in described ammonia spirit storage tank.
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|---|---|---|---|
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|---|---|---|---|
| CN201510823151.1A CN105344228A (en) | 2015-11-24 | 2015-11-24 | Ammonia-process H2O2 oxidation and denitration apparatus for flue gas of sintering machine |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101352644A (en) * | 2008-08-29 | 2009-01-28 | 浙江大学 | Wet flue gas denitration technique for nitrite recovery |
| CN101480574A (en) * | 2009-01-13 | 2009-07-15 | 南京师范大学 | Method for improving denitration efficiency of flue gas desulfurization technique with ammonia process |
| CN101927124A (en) * | 2010-08-17 | 2010-12-29 | 江苏中金环保科技有限公司 | Flue gas denitrification method |
| CN205412654U (en) * | 2015-11-24 | 2016-08-03 | 西安航天源动力工程有限公司 | Sintering machine flue gas ammonia process H2O2 oxidation denitrification facility |
-
2015
- 2015-11-24 CN CN201510823151.1A patent/CN105344228A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101352644A (en) * | 2008-08-29 | 2009-01-28 | 浙江大学 | Wet flue gas denitration technique for nitrite recovery |
| CN101480574A (en) * | 2009-01-13 | 2009-07-15 | 南京师范大学 | Method for improving denitration efficiency of flue gas desulfurization technique with ammonia process |
| CN101927124A (en) * | 2010-08-17 | 2010-12-29 | 江苏中金环保科技有限公司 | Flue gas denitrification method |
| CN205412654U (en) * | 2015-11-24 | 2016-08-03 | 西安航天源动力工程有限公司 | Sintering machine flue gas ammonia process H2O2 oxidation denitrification facility |
Non-Patent Citations (1)
| Title |
|---|
| 王汝武 主编: "《电厂节能减排技术》", 31 October 2008, 化学工业出版社 * |
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