CN202700337U - Sintering flue gas purification device - Google Patents

Sintering flue gas purification device Download PDF

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Publication number
CN202700337U
CN202700337U CN2012203917216U CN201220391721U CN202700337U CN 202700337 U CN202700337 U CN 202700337U CN 2012203917216 U CN2012203917216 U CN 2012203917216U CN 201220391721 U CN201220391721 U CN 201220391721U CN 202700337 U CN202700337 U CN 202700337U
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CN
China
Prior art keywords
absorption tower
flue gas
tower
sintering
ammonia
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2012203917216U
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Chinese (zh)
Inventor
周涛
陈继辉
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CISDI Engineering Co Ltd
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CISDI Engineering Co Ltd
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Publication date
Application filed by CISDI Engineering Co Ltd filed Critical CISDI Engineering Co Ltd
Priority to CN2012203917216U priority Critical patent/CN202700337U/en
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Publication of CN202700337U publication Critical patent/CN202700337U/en
Expired - Fee Related legal-status Critical Current
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

The utility model discloses a sintering flue gas purification device. The utility model has the key point that the device comprises a desulfurizing reaction tower, a dust removal tower and an absorption tower successively connected via pipelines, wherein the bottom of the absorption tower is provided with an ammonia spraying device, the lower part of the absorption tower is provided with an absorbent recycling device, the absorbent recycling device comprises an absorbent sieve connected at the bottom of the absorption tower, two branch pipes are led out from the absorbent sieve, one branch pipe is connected with an ash storage bin, the other branch pipe is a circulating pipeline of the absorption tower, and the tail end is connected with the absorption tower. The sintering flue gas purification device has simple structure, and the combined removal of sintering flue gas SO2, NOx and dioxin-like pollutants is realized. Meanwhile, SO2 and dioxins are respectively removed, the influence of SO2 in the flue gas on the absorption of dioxins by absorbents such as activated carbon can be reduced, and the removal efficiency of dioxins is increased.

Description

A kind of sintering gas purifying device
Technical field
The utility model relates to combustion product gases purified treatment field, relates in particular to steel works sintering tail gas SO 2, NO xReach the pollutant cooperation-removal devices such as dioxin.
Background technology
Sintering is an important production process in the smelting iron and steel, is the various iron-smelting raw materials that can not directly enter blast furnace are heated to 1300~1500 ℃, makes material sinter bulk into.Produce a large amount of ash-laden gas in the sintering process, major pollutants are dust and SO in the flue gas 2, dust concentration is 0.5~15g/Nm approximately 3, SO 2Concentration is 600~2000mg/Nm approximately 3, water content (volume ratio) approximately 10% also contains a small amount of HCl, NO x, the harmful substance such as the pernicious gas such as HF and heavy metal, dioxin, approximately 100~180 ℃ of flue-gas temperatures.
At present domesticly sinter fume is polluted control rest on the dust Control stage, to SO 2Emission control still be in the starting stage, but technical development is rapider, and is then at the early-stage to dioxin pollution thing control research in the sinter fume.Aspect sintering flue gas desulfurization, the technology that present China mainly adopts comprises circulating fluid bed semi-drying method, limestone/gypsum method and ammonia process etc.Circulating fluid bed semi-drying method technique wherein, have flow process short, take up an area province, water saving, desulfuration efficiency high, adopt in the sintering machine desulfuration project of big-and-middle-sized iron and steel enterprise such as domestic steel mills such as Ji steel, Handan Iron and Steel Co, three steel, Mei Gang at home, show stronger adaptability.But circulating fluid bed semi-drying method is to NO x, the pollutant removing efficient such as dioxin is low, can not satisfy increasingly serious environmental requirement.
The utility model content
It is a kind of simultaneously to sinter fume NO that the purpose of this utility model is to provide x, the sintering gas purifying device that removes of dioxin contamination thing.
The utility model is realized by the following technical solutions: a kind of sintering gas purifying device is characterized in that: described device comprises desulfurization reaction tower, deduster and the absorption tower that connects successively by pipeline, and the bottom on absorption tower is provided with ammonia-gas spraying device.
For adsorbent is carried out circular treatment, bottom, described absorption tower is provided with the sorbent circulation treating apparatus, the sorbent circulation treating apparatus comprises the adsorbent sieve that is connected in the bottom, absorption tower, tell two arms from the adsorbent sieve, an arm is connected to ash-storing bin, another arm is the absorption tower circulating line, and its end is connected to the absorption tower.
Described ammonia-gas spraying device is formed by connecting by ammonia water tank, diluent air blower fan and ammonia blender.
In order to regulate the flue gas flow in the desulfurization reaction tower, the outlet of top, described absorption tower connects the second booster fan, and the outlet of the second booster fan is provided with the flue gas mixing duct that is connected to the desulfurization reaction tower entrance, is used for regulating the flue gas flow in the desulfurization reaction tower.
Adsorbent is active carbon (Jiao), zeolite or γ-Al in the described absorption tower 2O 3Deng.
The utility model is simple in structure, has realized sinter fume SO 2, NO xRemove with uniting of dioxin pollution thing.Pass through SO simultaneously 2Remove respectively with dioxin, can reduce SO in the flue gas 2Impact on the adsorbents such as active carbon absorption dioxin improves the removal efficiency to dioxin.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Among the figure, 1 is sinter fume, and 2 is main exhauster, 3 is the desulfurizing tower gas baffle, and 4 is lime white, and 5 is desulfurization reaction tower, 6 is sack cleaner, and 7 is the first booster fan, and 8 is the absorption tower, 9 is the diluent air blower fan, and 10 is the adsorbent sieve, and 11 is the dust ash-storing bin, 12 is ammonia water tank, and 13 is the ammonia blender, and 14 is chimney, 15 is the absorption tower circulating line, and 16 is the second booster fan.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.
As shown in Figure 1, contain SO 2, NO xEnter desulfurization reaction tower 5 with the sinter fume 1 of dioxin by main exhauster 2 and desulfurizing tower gas baffle 3, lime white 4 sprays into from shower nozzle in the desulfurization reaction tower 5, and the desulfurizing agent in the desulfurization reaction tower 5 mixes SO with flue gas 2With desulfurizing agent Ca (OH) 2Chemical reaction occurs, the SO in the flue gas 2Be removed.6 dedustings enter 8 tops, absorption tower by the first booster fan 7 to flue gas after the desulfurization through sack cleaner, ammoniacal liquor in the ammonia water tank 12 after diluent air blower fan 9 dilutes in ammonia blender 13 from 8 bottoms, absorption tower spray in the absorption tower 8 with flue gas nitrogen oxide generation reduction reaction, adsorbent in the absorption tower carries out adsorbing and removing to dioxin in the flue gas, and the flue gas after the purification out enters chimney 14 from the top, absorption tower and enters atmosphere.The part absorbent powder is separated to dust ash-storing bin 11 through adsorbent sieve 10, and the adsorbent that does not have an inactivation enters adsorption tower 8 tops through adsorption tower bottom cycle pipeline 15 and recycles.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims (5)

1. sintering gas purifying device, it is characterized in that: described device comprises desulfurization reaction tower, deduster and the absorption tower that connects successively by pipeline, and the bottom on absorption tower is provided with ammonia-gas spraying device.
2. sintering gas purifying device as claimed in claim 1, it is characterized in that: bottom, described absorption tower is provided with the sorbent circulation treating apparatus, the sorbent circulation treating apparatus comprises the adsorbent sieve that is connected in the bottom, absorption tower, tell two arms from the adsorbent sieve, an arm is connected to ash-storing bin, another arm is the absorption tower circulating line, and its end is connected to the absorption tower.
3. sintering gas purifying device as claimed in claim 1 or 2, it is characterized in that: described ammonia-gas spraying device is formed by connecting by ammonia water tank, diluent air blower fan and ammonia blender.
4. sintering gas purifying device claimed in claim 3, it is characterized in that: the outlet of top, described absorption tower connects the second booster fan, the outlet of the second booster fan is provided with the flue gas mixing duct that is connected to the desulfurization reaction tower entrance, is used for regulating the flue gas flow in the desulfurization reaction tower.
5. sintering gas purifying device claimed in claim 4, it is characterized in that: have adsorbent in the described absorption tower, adsorbent is active carbon, zeolite or γ-Al 2O 3
CN2012203917216U 2012-08-09 2012-08-09 Sintering flue gas purification device Expired - Fee Related CN202700337U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012203917216U CN202700337U (en) 2012-08-09 2012-08-09 Sintering flue gas purification device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012203917216U CN202700337U (en) 2012-08-09 2012-08-09 Sintering flue gas purification device

Publications (1)

Publication Number Publication Date
CN202700337U true CN202700337U (en) 2013-01-30

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CN2012203917216U Expired - Fee Related CN202700337U (en) 2012-08-09 2012-08-09 Sintering flue gas purification device

Country Status (1)

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CN (1) CN202700337U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103638793A (en) * 2013-12-17 2014-03-19 张继惟 Technology system for purifying smoke with high concentration of SO2 or NOx
CN105695754A (en) * 2014-11-27 2016-06-22 江苏康洁环境工程有限公司 Method and device for removing NOX, SOX, dioxins and heavy metals from leaded exhaust gas as well as recovering lead dust
CN107469561A (en) * 2017-09-19 2017-12-15 中国科学院过程工程研究所 A kind of gas cleaning absorption tower and its processing method
CN109603468A (en) * 2019-02-15 2019-04-12 山东首丰环保设备有限公司 A kind of dust removal integrated method of desulphurization denitration

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103638793A (en) * 2013-12-17 2014-03-19 张继惟 Technology system for purifying smoke with high concentration of SO2 or NOx
CN105695754A (en) * 2014-11-27 2016-06-22 江苏康洁环境工程有限公司 Method and device for removing NOX, SOX, dioxins and heavy metals from leaded exhaust gas as well as recovering lead dust
CN107469561A (en) * 2017-09-19 2017-12-15 中国科学院过程工程研究所 A kind of gas cleaning absorption tower and its processing method
CN109603468A (en) * 2019-02-15 2019-04-12 山东首丰环保设备有限公司 A kind of dust removal integrated method of desulphurization denitration

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130130

Termination date: 20200809

CF01 Termination of patent right due to non-payment of annual fee