CN203360467U - Blast furnace gas dry method electrostatic dust collection device - Google Patents
Blast furnace gas dry method electrostatic dust collection device Download PDFInfo
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- CN203360467U CN203360467U CN2013204288127U CN201320428812U CN203360467U CN 203360467 U CN203360467 U CN 203360467U CN 2013204288127 U CN2013204288127 U CN 2013204288127U CN 201320428812 U CN201320428812 U CN 201320428812U CN 203360467 U CN203360467 U CN 203360467U
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- dry method
- dust collection
- electrostatic precipitator
- blast furnace
- electrostatic dust
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- 239000000428 dust Substances 0.000 title claims abstract description 40
- 239000007789 gas Substances 0.000 claims description 34
- 239000002956 ash Substances 0.000 claims description 27
- 238000005367 electrostatic precipitation Methods 0.000 claims description 17
- 238000004140 cleaning Methods 0.000 claims description 14
- 239000003034 coal gas Substances 0.000 claims description 5
- 239000010881 fly ash Substances 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0nMS4wJyBlbmNvZGluZz0naXNvLTg4NTktMSc/Pgo8c3ZnIHZlcnNpb249JzEuMScgYmFzZVByb2ZpbGU9J2Z1bGwnCiAgICAgICAgICAgICAgeG1sbnM9J2h0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnJwogICAgICAgICAgICAgICAgICAgICAgeG1sbnM6cmRraXQ9J2h0dHA6Ly93d3cucmRraXQub3JnL3htbCcKICAgICAgICAgICAgICAgICAgICAgIHhtbG5zOnhsaW5rPSdodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rJwogICAgICAgICAgICAgICAgICB4bWw6c3BhY2U9J3ByZXNlcnZlJwp3aWR0aD0nODVweCcgaGVpZ2h0PSc4NXB4JyB2aWV3Qm94PScwIDAgODUgODUnPgo8IS0tIEVORCBPRiBIRUFERVIgLS0+CjxyZWN0IHN0eWxlPSdvcGFjaXR5OjEuMDtmaWxsOiNGRkZGRkY7c3Ryb2tlOm5vbmUnIHdpZHRoPSc4NS4wJyBoZWlnaHQ9Jzg1LjAnIHg9JzAuMCcgeT0nMC4wJz4gPC9yZWN0Pgo8cGF0aCBjbGFzcz0nYm9uZC0wIGF0b20tMCBhdG9tLTEnIGQ9J00gNjIuNiw0Mi4wIEwgMjEuMiw0Mi4wJyBzdHlsZT0nZmlsbDpub25lO2ZpbGwtcnVsZTpldmVub2RkO3N0cm9rZTojNDI4NEY0O3N0cm9rZS13aWR0aDoxLjBweDtzdHJva2UtbGluZWNhcDpidXR0O3N0cm9rZS1saW5lam9pbjptaXRlcjtzdHJva2Utb3BhY2l0eToxJyAvPgo8cGF0aCBjbGFzcz0nYm9uZC0wIGF0b20tMCBhdG9tLTEnIGQ9J00gNjIuNiwzMC40IEwgMjEuMiwzMC40JyBzdHlsZT0nZmlsbDpub25lO2ZpbGwtcnVsZTpldmVub2RkO3N0cm9rZTojNDI4NEY0O3N0cm9rZS13aWR0aDoxLjBweDtzdHJva2UtbGluZWNhcDpidXR0O3N0cm9rZS1saW5lam9pbjptaXRlcjtzdHJva2Utb3BhY2l0eToxJyAvPgo8cGF0aCBjbGFzcz0nYm9uZC0wIGF0b20tMCBhdG9tLTEnIGQ9J00gNjIuNiw1My42IEwgMjEuMiw1My42JyBzdHlsZT0nZmlsbDpub25lO2ZpbGwtcnVsZTpldmVub2RkO3N0cm9rZTojNDI4NEY0O3N0cm9rZS13aWR0aDoxLjBweDtzdHJva2UtbGluZWNhcDpidXR0O3N0cm9rZS1saW5lam9pbjptaXRlcjtzdHJva2Utb3BhY2l0eToxJyAvPgo8dGV4dCB4PSc2NC4wJyB5PSc1My42JyBjbGFzcz0nYXRvbS0wJyBzdHlsZT0nZm9udC1zaXplOjIzcHg7Zm9udC1zdHlsZTpub3JtYWw7Zm9udC13ZWlnaHQ6bm9ybWFsO2ZpbGwtb3BhY2l0eToxO3N0cm9rZTpub25lO2ZvbnQtZmFtaWx5OnNhbnMtc2VyaWY7dGV4dC1hbmNob3I6c3RhcnQ7ZmlsbDojNDI4NEY0JyA+TjwvdGV4dD4KPHRleHQgeD0nNi4xJyB5PSc1My42JyBjbGFzcz0nYXRvbS0xJyBzdHlsZT0nZm9udC1zaXplOjIzcHg7Zm9udC1zdHlsZTpub3JtYWw7Zm9udC13ZWlnaHQ6bm9ybWFsO2ZpbGwtb3BhY2l0eToxO3N0cm9rZTpub25lO2ZvbnQtZmFtaWx5OnNhbnMtc2VyaWY7dGV4dC1hbmNob3I6c3RhcnQ7ZmlsbDojNDI4NEY0JyA+TjwvdGV4dD4KPC9zdmc+Cg== N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 206010063829 Device malfunction Diseases 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- 238000010248 power generation Methods 0.000 description 5
- 230000000875 corresponding Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000003245 working Effects 0.000 description 1
Classifications
-
- 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
Abstract
The utility model discloses a blast furnace gas dry method electrostatic dust collection device which comprises a dry method coarse dust collection device and a dry method fine dust collection device arranged behind the dry method coarse dust collection device and is characterized in that the dry method fine dust collection device comprises more than two electrostatic dust collection units arranged in parallel; each electrostatic dust collection unit comprises more than two dry method electrostatic dust collection devices connected in series; by-pass pipes are connected with the first dry method electrostatic dust collection device and the last dry method electrostatic dust collection device of each electrostatic dust collection unit in parallel. According to the utility model, each electrostatic dust collection unit comprises more than two dry method electrostatic dust collection devices connected in series, and at least one electrostatic dust collection device of each electrostatic dust collection unit has the abundant dust collection capacity, so that even if some dry method electrostatic dust collection device malfunctions, the rest dust collection devices can still meet the blast furnace gas fine dust collection requirement in the electrostatic dust collection unit, the purification quality of the output purified gas is ensured, and the demand that the fine dust collection system has 100% normal running rate is met when the blast furnace is in normal production; the blast furnace gas dry method electrostatic dust collection device is flexible and reliable.
Description
Technical field
The utility model relates to a kind of blast furnace gas dry electrostatic precipitator.
Technical background
The policy requirements of response national energy-saving environmental protection, domestic blast furnace adopts the dry-method bag-type dust collecting technology in a large number, this technology is relatively ripe and produced energy-saving benefit preferably, but in actual production, cloth bag is poor to the adaptability of blast furnace operating mode, maintenance workload is large, cost is high, and operating environment is poor; Dry method electrostatic precipitation system maintenance is few, and operating environment is better, is the first-selected dry method dust mode that substitutes bag-type dust.The blast furnace dry electric dust-removing process system of having implemented, its characteristics are as follows:
1) configure the electrostatic precipitator below 2, the system reserve rate is below 70%, and handiness and poor reliability wherein during any electrostatic precipitator fault, can't meet full dose blast furnace gas essence dedusting requirement;
2) supporting machinery is scraped ash, ash conveying device is arranged on the electrostatic precipitator inner bottom part, the long-term operating environment in high temperature, high dust concentration, and equipment attrition and gas leak phenomenon are serious.
For these reasons, at present the blast furnace dry electric dust removing system in out of service or half capacity operation state.
Summary of the invention
The purpose of this utility model is to provide a kind of reliable blast furnace gas dry electrostatic precipitator.
The utility model can be realized by such technical scheme: a kind of blast furnace gas dry electrostatic precipitator, comprise the thick cleaning apparatus of dry method and be arranged in this device dry method essence cleaning apparatus afterwards, it is characterized in that: described dry method essence cleaning apparatus comprises the electrostatic precipitation unit that 2 more parallels are arranged, each electrostatic precipitation unit comprises the dry method electrostatic precipitator of 2 above arranged in series.
All be parallel with bypass pipe on first dry method electrostatic precipitator in described electrostatic precipitation unit and last dry method electrostatic precipitator.
Described dry method electrostatic precipitator is built-in with gather dust positive plate and electric discharge cathode rays, by pole plate and the online vibration dust-cleaning of polar curve rapping apparatus.
The bottom of described dry method electrostatic precipitator is provided with collection ash section, the dedusting ash of collecting relies on coal gas positive pressure in fly-ash separator to unload to ash conveying pipe, then by take nitrogen or/and the airtight pneumatic ash conveying plant that coal gas is power gas source is delivered to the storage ash can by the dedusting ash in ash conveying pipe.
The perfectly straight stream piezoelectric voltage of described dry method electrostatic precipitator is less than 150kV.
The thick cleaning apparatus of described dry method is gravitational precipitator, tornado dust collector, ceramic high temperature fly-ash separator or sack cleaner.
The utility model has following beneficial effect:
1) each electrostatic precipitation unit comprises the dry method electrostatic precipitator of 2 above arranged in series, each unit has the rich ability of gathering dust of 1 electrostatic precipitator at least, even if certain dry method electrostatic precipitator fault wherein, all the other dedustings are had a high regard for so can meet blast furnace gas essence dedusting requirement in this unit, guarantees the depuration quality of outlet purified gas.
2) system is arranged in parallel 2 above electrostatic precipitation unit, each electrostatic precipitation unit is an independently smart dust removing units, system has the rich ability of the smart dedusting of 1 electrostatic precipitation unit at least, even if certain electrostatic precipitation cell failure, all the other dust removing units are appointed so can meet full dose blast furnace gas essence dedusting requirement, the normal operation rate demand of essence dust-removal system 100% when meeting blast furnace and normally producing, system flexibly, reliable.
3) electrostatic precipitator adopts online vibration dust-cleaning, during deashing, electrostatic precipitator keeps continuous gas entry control of dust, continuous exhaust pneumatic wallop, and do not adopt the off-line ash-clearing that cuts off air inlet or exhaust, avoided air inlet and drain tap to close frequently, start work, and then simplified process control process, extended the work-ing life of isolating valve simultaneously.
4) adopt Pneumatic ash conveying to replace mechanical ash conveying, thoroughly solve the easy failure problems of mechanical ash conveying system of dry electric precipitator, operating rate and reliability significantly promote.
The accompanying drawing explanation
Fig. 1 is the structural representation of embodiment;
Fig. 2 is the elevational view of Fig. 1.
In figure, 1 is blast furnace, 2 is the thick cleaning apparatus of dry method, 3,4 and 5 be the electrostatic precipitation unit, 3-1,3-2,3-3,3-4,4-1,4-2,4-3,4-4,5-1,5-2,5-3 and 5-4 are the dry method electrostatic precipitator, and 6 is pneumatic ash conveying plant, 7 is the storage ash can, 8 is power generation assembly, and 9 is the reducing valve group, 10 low pressure purified gas pipe networks.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but therefore the utility model is not limited among following concrete mode.
Embodiment: as shown in drawings.
1) half purified gas that the dust-laden blast furnace gas come from blast furnace 1 furnace roof obtains through the thick cleaning apparatus 2 of dry method successively enters respectively corresponding electrostatic precipitator unit 3 by each gas inlet arm, electrostatic precipitator unit 4, the first step dry method electrostatic precipitator 3-1 of electrostatic precipitator unit 5, dry method electrostatic precipitator 4-1, dry method electrostatic precipitator 5-1, and successively after the electrostatic precipitator at different levels of connecting in unit are carried out smart dedusting respectively via the dry method electrostatic precipitator 3-4 of final stage, dry method electrostatic precipitator 4-4, dry method electrostatic precipitator 5-4 electrostatic precipitator vapor pipe is discharged, purified gas is collected in high pressure purified gas supervisor.System has the rich ability of the smart dedusting of 1 electrostatic precipitation unit at least, has the rich ability of gathering dust of 1 electrostatic precipitator in each unit at least; The dedusting ash of gathering dust on positive plate and electric discharge cathode rays by the regular rapping of rapping apparatus cleaning electrostatic precipitator is to collector for duster ash section cone, and the dedusting ash of collecting in collector for duster ash section cone is delivered to storage ash can 7 by pneumatic ash conveying plant 6.
2) if certain electrostatic precipitator fault in certain dry method electrostatic precipitation unit, cut off gas inlet, the drain tap of this fly-ash separator, open bypass pipe, air-flow flows into next stage electrostatic precipitator or high pressure purified gas supervisor by bypass pipe, in group, all the other dedustings are had a high regard for and so can be met blast furnace gas essence dedusting requirement in this unit, guarantee the depuration quality of outlet purified gas.Take corresponding safety inspection measure, the electrostatic precipitator after fixing a breakdown can come into operation again.
3) if certain dry method electrostatic precipitation cell failure, cut off this unit first step electrostatic precipitator gas inlet valve and last step electrostatic precipitator coal gas drain tap, all the other dust removing units are appointed so can meet full dose blast furnace gas essence dedusting requirement, the normal operation rate demand of essence dust-removal system 100% when meeting blast furnace and normally producing.Take corresponding safety inspection measure, the electrostatic precipitation unit after fixing a breakdown can come into operation again.
4) purified gas dustiness≤5mg/Nm after smart dedusting
3, enter power generation assembly 8, because front two-stage dust removal installation does not have temperature drop and pressure drop very low substantially, the generated energy of power generation assembly increases considerably;
5) if power generation assembly breaks down or blast furnace gas does not meet the entrance requirement of power generation assembly, purified gas directly is incorporated to low pressure purified gas pipe network 10 through reducing valve group 9.
Claims (6)
1. a blast furnace gas dry electrostatic precipitator, comprise the thick cleaning apparatus of dry method and be arranged in this device dry method essence cleaning apparatus afterwards, it is characterized in that: described dry method essence cleaning apparatus comprises the electrostatic precipitation unit that 2 more parallels are arranged, each electrostatic precipitation unit comprises the dry method electrostatic precipitator of 2 above arranged in series.
2. blast furnace gas dry electrostatic precipitator as claimed in claim 1, is characterized in that: on first dry method electrostatic precipitator in described electrostatic precipitation unit and last dry method electrostatic precipitator, all be parallel with bypass pipe.
3. blast furnace gas dry electrostatic precipitator as claimed in claim 1 or 2 is characterized in that: described dry method electrostatic precipitator is built-in with gather dust positive plate and electric discharge cathode rays, by pole plate and the online vibration dust-cleaning of polar curve rapping apparatus.
4. blast furnace gas dry electrostatic precipitator as claimed in claim 3, it is characterized in that: the bottom of described dry method electrostatic precipitator is provided with collection ash section, the dedusting ash of collecting relies on coal gas positive pressure in fly-ash separator to unload to ash conveying pipe, then by take nitrogen or/and the airtight pneumatic ash conveying plant that coal gas is power gas source is delivered to the storage ash can by the dedusting ash in ash conveying pipe.
5. blast furnace gas dry electrostatic precipitator as claimed in claim 4, it is characterized in that: the perfectly straight stream piezoelectric voltage of described dry method electrostatic precipitator is less than 150kV.
6. blast furnace gas dry electrostatic precipitator as claimed in claim 1, it is characterized in that: the thick cleaning apparatus of described dry method is gravitational precipitator, tornado dust collector, ceramic high temperature fly-ash separator or sack cleaner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204288127U CN203360467U (en) | 2013-07-18 | 2013-07-18 | Blast furnace gas dry method electrostatic dust collection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204288127U CN203360467U (en) | 2013-07-18 | 2013-07-18 | Blast furnace gas dry method electrostatic dust collection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203360467U true CN203360467U (en) | 2013-12-25 |
Family
ID=49808259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204288127U Active CN203360467U (en) | 2013-07-18 | 2013-07-18 | Blast furnace gas dry method electrostatic dust collection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203360467U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968674A (en) * | 2014-05-20 | 2014-08-06 | 莱芜钢铁集团有限公司 | Medium and low temperature smoke online pre-ash-removal device of rotary hearth furnace |
-
2013
- 2013-07-18 CN CN2013204288127U patent/CN203360467U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968674A (en) * | 2014-05-20 | 2014-08-06 | 莱芜钢铁集团有限公司 | Medium and low temperature smoke online pre-ash-removal device of rotary hearth furnace |
| CN103968674B (en) * | 2014-05-20 | 2015-10-07 | 莱芜钢铁集团有限公司 | The online pre-deashing device of low-temperature flue gas in a kind of rotary hearth furnace |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |