CN103276141B - Converter primary flue gas wet type classification dust removing apparatus - Google Patents
Converter primary flue gas wet type classification dust removing apparatus Download PDFInfo
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- CN103276141B CN103276141B CN201310226232.4A CN201310226232A CN103276141B CN 103276141 B CN103276141 B CN 103276141B CN 201310226232 A CN201310226232 A CN 201310226232A CN 103276141 B CN103276141 B CN 103276141B
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- dust removing
- flue gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The present invention relates to a converter primary flue gas wet type classification dust removing apparatus, which comprises a first-stage coarse dust removing device, a second-stage fine dust removing device, a third-stage fine dust removing device, a fan and a circulating water system, wherein the first-stage coarse dust removing device, the second-stage fine dust removing device, the third-stage fine dust removing device, the fan and the circulating water system are sequentially connected, the first-stage coarse dust removing device is provided with a spraying device I and a sludge discharge valve I, the second-stage fine dust removing device is provided with a spraying device II and a sludge discharge valve II, the circulating water system comprises a sewage treatment device and a circulating pump, the sludge discharge valve I and the sludge discharge valve II are respectively connected with an inlet of the sewage treatment device, and an outlet of the sewage treatment device is respectively connected with the spraying device I and the spraying device II through the circulating pump. The converter primary flue gas wet type classification dust removing apparatus has characteristics of simple structure, stable and reliable operation, low investment, and low operation and maintenance cost. With the three-stage dust removing, dust removing efficiency is improved, it is ensured that the dust concentration in the flue gas discharged after purification is less than or equal to 10 mg/m<3>, the dust concentration in the flue gas through the apparatus of the present invention is lower than the dust concentration in the flue gas through the existing dry dust removing technology and the existing wet dust removing technology, and the discharging standard meets the international environmental protection standard.
Description
Technical field
The present invention relates to a kind of cleaning apparatus, be specifically related to a kind of converter flue gas wet classification cleaning apparatus.
Background technology
A converter current main employing of flue gas ash removal technology is dry method electric precipitation and wet dedusting.Dry method electrostatic precipitation technology is comparatively novel technology, has working cost low (water and electric saving), efficiency of dust collection is high (reaches 99.9%, emission gases dust content≤15mg/m
3) advantage, but have that one-time investment is high, failure rate is high, a shortcoming such as comparatively large to Influence of production, maintenance workload is large simultaneously, cause numerous user to be difficult to accept.Wet dedusting technology is traditional dedusting technology, although having one-time investment is the half of dry method, the advantage of stable and reliable operation, but have the defect of working cost high (energy consumption is about 2 times of dry method), dust removing effects difference, especially emission gases dust content is up to 50mg/m simultaneously
3~ 100mg/m
3, can not meet the environmental protection standard of selected areas of China, although share of market is higher, can not meets environmental protection standard and cannot adopt, existing numerous wet dedusting project also faces this environmental protection problem not up to standard simultaneously.
Summary of the invention
In view of this, the object of this invention is to provide a kind of converter flue gas wet classification cleaning apparatus, its structure is simple, and operating safety is stablized, efficiency of dust collection advantages of higher.
The invention discloses a kind of converter flue gas wet classification cleaning apparatus, comprise the thick cleaning apparatus of the one-level connected successively, secondary essence cleaning apparatus, three grades of smart cleaning apparatuss, blower fan and circulating water system, the thick cleaning apparatus of described one-level is provided with spray equipment I and mud discharging valve I, described secondary essence cleaning apparatus is provided with spray equipment II and mud discharging valve II, described circulating water system comprises waste disposal plant and recycle pump, described mud discharging valve I is connected with waste disposal plant entrance respectively with mud discharging valve II, described waste disposal plant outlet is connected with spray equipment I and spray equipment II respectively by recycle pump.
Further, the thick cleaning apparatus of described one-level is water cooling tower, and described secondary essence cleaning apparatus is annular seam washing tower, and described three grades of smart cleaning apparatuss are electrostatic precipitator.
Further, the thick cleaning apparatus of described one-level is water cooling tower, and described secondary essence cleaning apparatus is venturi scrubber, and described three grades of smart cleaning apparatuss are electrostatic precipitator.
Further, described electrostatic precipitator comprises electric field, described electric field comprises housing, receiving electrode and corona discharge electrode is provided with in described housing, described corona discharge electrode is positioned at receiving electrode, described housing is provided with the spray equipment III for receiving electrode deashing, and described housing is provided with the rapping apparatus for corona discharge electrode deashing, and described housing is provided with mud discharging valve III; Described mud discharging valve III is connected with waste disposal plant entrance, and described waste disposal plant outlet is connected with spray equipment III by recycle pump.
Further, described receiving electrode cross-sectional shape is equilateral polygon and limit number is greater than 3, in the very star-like barb type corona discharge electrode of described corona or zig-zag corona discharge electrode any one, contained by described star-like barb type corona discharge electrode cross section, star-like prickle number equals equilateral polygon limit, receiving electrode cross section number.
Further, described electrostatic precipitator comprises more than at least 2 electric fields be cascaded.
Beneficial effect of the present invention is: the present invention has the following advantages:
1) by the present invention to after converter flue gas ash removal, ensure that purification after discharge dust contained flue gas concentration≤10mg/m
3, lower than existing dry dedusting technology and wet dedusting state of the art, its emission standard reaches International Environmental Protection standard.
2) structure of the present invention is simple, and stable and reliable operation, invest less, operation expense is low.
3) have employed water spray dedusting technology, avoid the possibility of blast, ensure that system safety operation.
Accompanying drawing explanation
In order to make the object of invention, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of electrostatic precipitator of the present invention;
Fig. 3 is the A direction view of Fig. 2.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Embodiment 1
As shown in the figure, converter of the present invention flue gas wet classification cleaning apparatus, comprise the thick cleaning apparatus 1 of the one-level connected successively, secondary essence cleaning apparatus 2, three grades of smart cleaning apparatuss 3, blower fan 4 and circulating water system, the thick cleaning apparatus 1 of described one-level is provided with spray equipment I 5 and mud discharging valve I 6, described secondary essence cleaning apparatus 2 is provided with spray equipment II 7 and mud discharging valve II 8, described circulating water system comprises waste disposal plant 9 and recycle pump 10, described mud discharging valve I 6 and mud discharging valve II 8 are connected with waste disposal plant 9 entrance respectively, described waste disposal plant 9 is exported and is connected with spray equipment I 5 and spray equipment II 7 respectively by recycle pump 10.
First the high-temperature flue gas that converter produces enters into the thick cleaning apparatus 1 of one-level of the present invention, through water and high temperature dust flue gas that spray equipment I 5 sprays directly contact dedusting slightly imitated to flue gas while heat exchange lower the temperature, flue gas cooling method in the thick cleaning apparatus of one-level 1 is that transpiration cooling cooling is combined as master with saturated cooling, be detained heat-exchange time 7 seconds, the dust contained flue gas concentration 15g/m after process
3, temperature about 90 DEG C, the muddy water produced after thick dedusting is discharged by mud discharging valve I 6; Flue gas enters in secondary essence cleaning apparatus 2 more afterwards, the water sprayed by spray equipment II 7 carries out heat exchange cooling with flue gas again, and cooling method cools based on saturated, carries out dedusting to flue gas simultaneously, be detained heat-exchange time 4 seconds, the dust contained flue gas concentration 180mg/m after process
3, temperature about 75 DEG C, the muddy water produced after dedusting is discharged by mud discharging valve II 8; Flue gas enters three grades of smart cleaning apparatuss 3 subsequently, by carrying out three grades of ultra-high efficiency dedustings to flue gas, and the dust contained flue gas concentration≤10mg/m after process
3, temperature≤70 DEG C, meet environmental requirement, reach emission standard.The muddy water that the thick cleaning apparatus 1 of one-level and secondary essence cleaning apparatus 2 produce, be drained into waste disposal plant 9, the clean water obtained after then processing, be again delivered to spray equipment I 5 and the use of spray equipment II 7 internal recycle by recycle pump 10, economize on resources, reduce costs.
In the present embodiment, the thick cleaning apparatus 1 of described one-level is water cooling tower, and described secondary essence cleaning apparatus 2 is annular seam washing tower, described three grades of smart cleaning apparatuss 3 are electrostatic precipitator, by 3-stage dust-removal, improve efficiency of dust collection, ensure that exiting flue gas reaches emission standard.
In the present embodiment, described electrostatic precipitator comprises electric field, described electric field comprises housing 11, receiving electrode 12 and corona discharge electrode 13 is provided with in described housing 11, described corona discharge electrode 13 is positioned at receiving electrode 12, described housing 11 is provided with the spray equipment III 14 for receiving electrode 12 deashing, and described housing 11 is provided with the rapping apparatus 15 for corona discharge electrode 13 deashing, and described housing 11 is provided with mud discharging valve III 16; Described mud discharging valve III 16 is connected with waste disposal plant 9 entrance, and described waste disposal plant 9 is exported and is connected with spray equipment III 14 by recycle pump 10.Under the effect of high tension electrostatic field, in flue gas, dust is adsorbed to corona discharge electrode 13 and receiving electrode 12 respectively, reaches dedusting object.By the dust of attachment on spray equipment III 14 and rapping apparatus 15 scavenger precipitation pole 12 and corona discharge electrode 13, the muddy water formed enters waste disposal plant 9 by mud discharging valve III 16, the clean water will obtained after process again, is again delivered to spray equipment III 14 by recycle pump 10 and uses.
In the present embodiment, described receiving electrode 12 cross-sectional shape is equilateral polygon and limit number is greater than 3, limit, the present embodiment receiving electrode 12 cross section number is 6 limits, described corona discharge electrode 13 be in star-like barb type corona discharge electrode or zig-zag corona discharge electrode any one, the present embodiment corona discharge electrode 13 is star-like barb type corona discharge electrode, contained by described star-like barb type corona discharge electrode cross section, star-like prickle number equals equilateral polygon limit, receiving electrode 12 cross section number, and the effect of the discharging sharp-angle of corona discharge electrode 13 corona is more at most also better.
In the present embodiment, described electrostatic precipitator comprises more than at least 2 electric fields be cascaded, and determine electric field quantity according to on-the-spot actual condition, the present embodiment electric field quantity is 3.
Embodiment 2
As another embodiment of the present invention, the thick cleaning apparatus 1 of one-level of the present invention is water cooling tower, described secondary essence cleaning apparatus 2 is venturi scrubber, described three grades of smart cleaning apparatuss 3 are electrostatic precipitator, venturi scrubber to the good cooling effect of high-temperature gas, have volume little, take up an area less, advantage that price is low.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by referring to the preferred embodiments of the present invention, invention has been described, but those of ordinary skill in the art is to be understood that, various change can be made to it in the form and details, and not depart from the spirit and scope of the present invention that appended claims limits.
Claims (3)
1. converter flue gas wet classification cleaning apparatus, it is characterized in that: comprise the thick cleaning apparatus of the one-level connected successively, secondary essence cleaning apparatus, three grades of smart cleaning apparatuss, blower fan and circulating water system, the thick cleaning apparatus of described one-level is provided with spray equipment I and mud discharging valve I, described secondary essence cleaning apparatus is provided with spray equipment II and mud discharging valve II, described circulating water system comprises waste disposal plant and recycle pump, described mud discharging valve I is connected with waste disposal plant entrance respectively with mud discharging valve II, described waste disposal plant outlet is connected with spray equipment I and spray equipment II respectively by recycle pump, the thick cleaning apparatus of described one-level is water cooling tower, and described secondary essence cleaning apparatus is annular seam washing tower, and described three grades of smart cleaning apparatuss are electrostatic precipitator, described electrostatic precipitator comprises electric field, described electric field comprises housing, receiving electrode and corona discharge electrode is provided with in described housing, described corona discharge electrode is positioned at receiving electrode, described housing is provided with the spray equipment III for receiving electrode deashing, described housing is provided with the rapping apparatus for corona discharge electrode deashing, and described housing is provided with mud discharging valve III, described mud discharging valve III is connected with waste disposal plant entrance, and described waste disposal plant outlet is connected with spray equipment III by recycle pump.
2. converter according to claim 1 flue gas wet classification cleaning apparatus, it is characterized in that: described receiving electrode cross-sectional shape is equilateral polygon and limit number is greater than 3, in the very star-like barb type corona discharge electrode of described corona or zig-zag corona discharge electrode any one, contained by described star-like barb type corona discharge electrode cross section, star-like prickle number equals equilateral polygon limit, receiving electrode cross section number.
3. converter according to claim 1 flue gas wet classification cleaning apparatus, is characterized in that: described electrostatic precipitator comprises more than at least 2 electric fields be cascaded.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310226232.4A CN103276141B (en) | 2013-06-07 | 2013-06-07 | Converter primary flue gas wet type classification dust removing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310226232.4A CN103276141B (en) | 2013-06-07 | 2013-06-07 | Converter primary flue gas wet type classification dust removing apparatus |
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| CN103276141A CN103276141A (en) | 2013-09-04 |
| CN103276141B true CN103276141B (en) | 2015-06-10 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571377A (en) * | 2014-10-11 | 2016-05-11 | 北京明诚环保科技有限公司 | Tower bottom structure of fast overflow cooling tower and fast overflow cooling tower with same |
| CN104764033A (en) * | 2015-04-03 | 2015-07-08 | 中国能源建设集团山西省电力勘测设计院有限公司 | Combination device with high-efficiency flue-gas electric dust removal and flue-gas waste heat utilization |
| CN105588450A (en) * | 2015-12-23 | 2016-05-18 | 上海翰忠环保有限公司 | Wet electric precipitation technique for comprehensive treatment of smoke of smelting furnace and heat preserving furnace for aluminum |
| CN107641679B (en) * | 2017-10-26 | 2019-06-21 | 中冶赛迪工程技术股份有限公司 | A kind of Wet Dust-trapping of Converter energy-saving control method |
| CN114700177A (en) * | 2022-04-25 | 2022-07-05 | 山东莱钢永锋钢铁有限公司 | Wet electric dust removal water distribution system |
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| CN201353530Y (en) * | 2009-01-20 | 2009-12-02 | 清华同方(鞍山)环保设备股份有限公司 | Electric precipitator capable of adjusting air flow |
| CN202465758U (en) * | 2011-12-02 | 2012-10-03 | 中冶赛迪工程技术股份有限公司 | Converter gas purifying and recycling system |
| CN202823071U (en) * | 2012-08-10 | 2013-03-27 | 斯普瑞喷雾系统(上海)有限公司 | Converter semi-dry method dust-cleaning equipment |
| CN203295545U (en) * | 2013-06-07 | 2013-11-20 | 中冶赛迪工程技术股份有限公司 | Wet-type grading dust removal device for primary flue gas of converter |
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| CN201353530Y (en) * | 2009-01-20 | 2009-12-02 | 清华同方(鞍山)环保设备股份有限公司 | Electric precipitator capable of adjusting air flow |
| CN202465758U (en) * | 2011-12-02 | 2012-10-03 | 中冶赛迪工程技术股份有限公司 | Converter gas purifying and recycling system |
| CN202823071U (en) * | 2012-08-10 | 2013-03-27 | 斯普瑞喷雾系统(上海)有限公司 | Converter semi-dry method dust-cleaning equipment |
| CN203295545U (en) * | 2013-06-07 | 2013-11-20 | 中冶赛迪工程技术股份有限公司 | Wet-type grading dust removal device for primary flue gas of converter |
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