CN103276141A - 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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- CN103276141A CN103276141A CN2013102262324A CN201310226232A CN103276141A CN 103276141 A CN103276141 A CN 103276141A CN 2013102262324 A CN2013102262324 A CN 2013102262324A CN 201310226232 A CN201310226232 A CN 201310226232A CN 103276141 A CN103276141 A CN 103276141A
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- flue gas
- corona discharge
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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 flue gas wet classification of a kind of converter cleaning apparatus.
Background technology
It is dry method electric precipitation and wet dedusting that a flue gas ash removal technology of converter current master adopts.The dry method electrostatic precipitation technology is comparatively novel technology, has working cost low (water and electric saving), the efficiency of dust collection height (reaches 99.9%, emission gases dust content≤15mg/m
3) advantage, but have one-time investment height, failure rate height simultaneously, to producing shortcomings such as influence is big, maintenance workload is big, cause numerous users to be difficult to accept.The wet dedusting technology is traditional dedusting technology, be half of dry method, the advantage of stable and reliable operation though have one-time investment, but have the defective of working cost height (energy consumption is about 2 times of dry method), dust removing effects difference simultaneously, especially the emission gases dust content is up to 50mg/m
3～100mg/m
3, can not satisfy the environmental protection standard of Chinese some areas, though share of market is higher, can not satisfies environmental protection standard and can't adopt, existing numerous wet dedusting projects also face this environmental protection problem not up to standard simultaneously.
Summary of the invention
In view of this, the purpose of this invention is to provide a flue gas wet classification of a kind of converter cleaning apparatus, it is simple in structure, and operating safety is stable, the efficiency of dust collection advantages of higher.
The invention discloses a flue gas wet classification of a kind of converter cleaning apparatus, comprise the thick cleaning apparatus of one-level that connects successively, the smart cleaning apparatus of secondary, 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, the smart cleaning apparatus of described secondary 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 the waste disposal plant entrance respectively with mud discharging valve II, and described waste disposal plant outlet is connected with the spray equipment II with the spray equipment I respectively by recycle pump.
Further, the thick cleaning apparatus of described one-level is water cooling tower, and the smart cleaning apparatus of described secondary is the circumferential weld 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 the smart cleaning apparatus of described secondary 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, be provided with receiving electrode and corona discharge electrode in the described housing, described corona discharge electrode is positioned at receiving electrode, described housing is provided with the spray equipment III for the receiving electrode deashing, and described housing is provided with the rapping apparatus for the corona discharge electrode deashing, and described housing is provided with mud discharging valve III; Described mud discharging valve III is connected with the waste disposal plant entrance, and described waste disposal plant outlet is connected with the spray equipment III by recycle pump.
Further, described receiving electrode cross-sectional shape is that equilateral polygon and limit number are greater than 3, in the very star-like barb type corona discharge electrode of described corona or the zig-zag corona discharge electrode any one, the contained star-like prickle number in described star-like barb type corona discharge electrode cross section equals equilateral polygon limit, receiving electrode cross section number.
Further, described electrostatic precipitator comprises the electric field that is cascaded more than at least 2.
Beneficial effect of the present invention is: the present invention has the following advantages:
1) by the present invention to flue gas ash removal of converter after, guaranteed to purify back discharged flue gas dust content≤10mg/m
3,, being lower than existing dry dedusting technology and wet dedusting state of the art, its emission standard reaches international environmental protection standard.
2) the present invention is simple in structure, and stable and reliable operation is invested lessly, and operation expense is low.
3) adopt the water spray dedusting technology, avoided the possibility of blast, guaranteed system safety operation.
Description of drawings
For the purpose, technical scheme and the advantage that make invention is clearer, the present invention is described in further detail below in conjunction with accompanying drawing, 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 that the A of Fig. 2 is to view.
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, a flue gas wet classification of converter of the present invention cleaning apparatus, comprise the thick cleaning apparatus 1 of one-level that connects successively, the smart cleaning apparatus 2 of secondary, 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, the smart cleaning apparatus 2 of described secondary 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 is connected with waste disposal plant 9 entrances respectively with mud discharging valve II 8, and described waste disposal plant 9 outlets are connected with spray equipment II 7 with spray equipment I 5 respectively by recycle pump 10.
The high-temperature flue gas that converter produces at first enters into the thick cleaning apparatus 1 of one-level of the present invention, flue gas of water and high temperature dust of process spray equipment I 5 ejections directly contacts slightly imitates dedusting heat exchange simultaneously cooling to flue gas, flue gas cooling method in the thick cleaning apparatus 1 of one-level is that the transpiration cooling cooling is combined as the master with saturated cooling, be detained heat-exchange time 7 seconds, the dust contained flue gas concentration 15g/m after the processing
3, about 90 ℃ of temperature are discharged by mud discharging valve I 6 through the muddy water that produces after the thick dedusting; Flue gas enters in the smart cleaning apparatus 2 of secondary more afterwards, water by 7 ejections of spray equipment II carries out the heat exchange cooling with flue gas again, and cooling method cools based on saturated, simultaneously flue gas is carried out dedusting, be detained heat-exchange time 4 seconds, the dust contained flue gas concentration 180mg/m after the processing
3, about 75 ℃ of temperature are discharged by mud discharging valve II 8 through the muddy water that produces after the dedusting; Flue gas enters three grades of smart cleaning apparatuss 3 subsequently, by flue gas being carried out three grades of ultra-high efficiency dedustings, the dust contained flue gas concentration≤10mg/m after the processing
3, environmental requirement is satisfied in temperature≤70 ℃, reaches emission standard.The muddy water that the smart cleaning apparatus 2 of the thick cleaning apparatus 1 of one-level and secondary produces, be drained into waste disposal plant 9, the clean water that will obtain after will handling then is delivered to spray equipment I 5 and the use of spray equipment II 7 internal recycle again by recycle pump 10, economize on resources, reduce cost.
In the present embodiment, the thick cleaning apparatus 1 of described one-level is water cooling tower, and the smart cleaning apparatus 2 of described secondary is the circumferential weld washing tower, described three grades of smart cleaning apparatuss 3 are electrostatic precipitator, by 3-stage dust-removal, improved efficiency of dust collection, guaranteed that the outlet flue gas reaches emission standard.
In the present embodiment, described electrostatic precipitator comprises electric field, described electric field comprises housing 11, be provided with receiving electrode 12 and corona discharge electrode 13 in the 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 deashings, and described housing 11 is provided with the rapping apparatus 15 for corona discharge electrode 13 deashings, 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 entrances, and described waste disposal plant 9 outlets are connected with spray equipment III 14 by recycle pump 10.Under the effect of high tension electrostatic field, dust is adsorbed to corona discharge electrode 13 and receiving electrode 12 respectively in the flue gas, reaches the dedusting purpose.By the dust that adheres on spray equipment III 14 and the rapping apparatus 15 scavenger precipitation utmost points 12 and the corona discharge electrode 13, the muddy water that forms enters waste disposal plant 9 by mud discharging valve III 16, the clean water that will obtain after will handling again is delivered to spray equipment III 14 again by recycle pump 10 and uses.
In the present embodiment, described receiving electrode 12 cross-sectional shapes are that equilateral polygon and limit number are greater than 3, limit, 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 the zig-zag corona discharge electrode any one, present embodiment corona discharge electrode 13 is star-like barb type corona discharge electrode, the contained star-like prickle number in described star-like barb type corona discharge electrode cross section equals equilateral polygon limit, receiving electrode 12 cross section number, and the discharging sharp-angle of corona discharge electrode 13 effect of corona more at most is also just more good.
In the present embodiment, described electrostatic precipitator comprises the electric field that is cascaded more than at least 2, determines electric field quantity according to on-the-spot actual condition, and 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, the smart cleaning apparatus 2 of described secondary is venturi scrubber, described three grades of smart cleaning apparatuss 3 are electrostatic precipitator, venturi scrubber is to the good cooling effect of high-temperature gas, have volume little, take up an area of less, advantage that price is low.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although by invention has been described with reference to the preferred embodiments of the present invention, but those of ordinary skill in the art is to be understood that, can make various changes to it in the form and details, and not depart from the spirit and scope of the present invention that appended claims limits.
Claims (6)
1. a flue gas wet classification of converter cleaning apparatus, it is characterized in that: comprise the thick cleaning apparatus of one-level that connects successively, the smart cleaning apparatus of secondary, 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, the smart cleaning apparatus of described secondary 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 the waste disposal plant entrance respectively with mud discharging valve II, and described waste disposal plant outlet is connected with the spray equipment II with the spray equipment I respectively by recycle pump.
2. a flue gas wet classification of converter according to claim 1 cleaning apparatus, it is characterized in that: the thick cleaning apparatus of described one-level is water cooling tower, and the smart cleaning apparatus of described secondary is the circumferential weld washing tower, and described three grades of smart cleaning apparatuss are electrostatic precipitator.
3. a flue gas wet classification of converter according to claim 1 cleaning apparatus, it is characterized in that: the thick cleaning apparatus of described one-level is water cooling tower, and the smart cleaning apparatus of described secondary is venturi scrubber, and described three grades of smart cleaning apparatuss are electrostatic precipitator.
4. according to claim 2 or a flue gas wet classification of 3 any described converters cleaning apparatus, it is characterized in that: described electrostatic precipitator comprises electric field, described electric field comprises housing, be provided with receiving electrode and corona discharge electrode in the described housing, described corona discharge electrode is positioned at receiving electrode, described housing is provided with the spray equipment III for the receiving electrode deashing, and described housing is provided with the rapping apparatus for the corona discharge electrode deashing, and described housing is provided with mud discharging valve III; Described mud discharging valve III is connected with the waste disposal plant entrance, and described waste disposal plant outlet is connected with the spray equipment III by recycle pump.
5. a flue gas wet classification of converter according to claim 4 cleaning apparatus, it is characterized in that: described receiving electrode cross-sectional shape is that equilateral polygon and limit number are greater than 3, in the very star-like barb type corona discharge electrode of described corona or the zig-zag corona discharge electrode any one, the contained star-like prickle number in described star-like barb type corona discharge electrode cross section equals equilateral polygon limit, receiving electrode cross section number.
6. a flue gas wet classification of converter according to claim 4 cleaning apparatus, it is characterized in that: described electrostatic precipitator comprises the electric field that is cascaded more than at least 2.
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| CN201310226232.4A CN103276141B (en) | 2013-06-07 | 2013-06-07 | Converter primary flue gas wet type classification dust removing apparatus |
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| 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 true CN103276141A (en) | 2013-09-04 |
| CN103276141B CN103276141B (en) | 2015-06-10 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| CN107641679A (en) * | 2017-10-26 | 2018-01-30 | 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 |
| CN111442654A (en) * | 2020-05-07 | 2020-07-24 | 中冶赛迪技术研究中心有限公司 | Electric arc furnace flue gas dust removal device and 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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| 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 |
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Cited By (6)
| 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 |
| CN107641679A (en) * | 2017-10-26 | 2018-01-30 | 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 |
| CN111442654A (en) * | 2020-05-07 | 2020-07-24 | 中冶赛迪技术研究中心有限公司 | Electric arc furnace flue gas dust removal device and 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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| CN103276141B (en) | 2015-06-10 |
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