CN203360467U - Blast furnace gas dry method electrostatic dust collection device - Google Patents

Blast furnace gas dry method electrostatic dust collection device Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
dry method
dust collection
electrostatic precipitator
blast furnace
electrostatic dust
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.)
Active
Application number
CN2013204288127U
Other languages
Chinese (zh)
Inventor
贾彩清
马作仿
陈乐�
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CISDI Engineering Co Ltd
Original Assignee
CISDI Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CISDI Engineering Co Ltd filed Critical CISDI Engineering Co Ltd
Priority to CN2013204288127U priority Critical patent/CN203360467U/en
Application granted granted Critical
Publication of CN203360467U publication Critical patent/CN203360467U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process 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

A kind of blast furnace gas dry electrostatic precipitator
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.
CN2013204288127U 2013-07-18 2013-07-18 Blast furnace gas dry method electrostatic dust collection device Active CN203360467U (en)

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
CN (1) CN203360467U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN105080715B (en) Line pipe type high-temperature electrostatic precipitation device with particle flushing for dust removing and dust removing method
CN104548784A (en) Inner-filtering inner-blowing type bag type dust collector and ash removal method thereof
CN100588720C (en) Gas totally-drying purifying dust-collecting process of blast-furnace
CN202824051U (en) Central dust collection device
CN105435573A (en) Low-energy-consumption roof haze particle capturing and curing device and monitoring device thereof
CN102534082A (en) Dry-process dust-removing and dechlorination combined device for blast furnace gas
CN201454686U (en) Electrostatic dust removing equipment
CN201971854U (en) Converter gas dry method bag type recovery and purification system
CN204996568U (en) Adopt granule to erode spool formula high temperature electrostatic precipitator device of deashing
CN203360467U (en) Blast furnace gas dry method electrostatic dust collection device
CN204996274U (en) Circulating fluidized bed boiler is with two bag dust removers of two electricity
CN203096102U (en) Dry-process dust collecting device for blast furnace coal gas
CN207126676U (en) A kind of electrostatic precipitator
CN102071281B (en) Converter gas dry method bag type recovering and purifying system and process
CN2561492Y (en) Rotating flap dust collector
CN202666642U (en) Parasitic combined dust collecting device
CN102641785B (en) Intelligent brushing, sweeping and rapping device for high voltage electrostatic precipitator tail electric field
CN2784085Y (en) Novel electromechanical integration electric precipitator
CN203417570U (en) Cutting chipping gas-solid separation dust collection treatment system
CN203220969U (en) Electric dust collector with reticular mobile dust collecting electrode
CN204395655U (en) Formula sack cleaner is blown in interior filter
CN202570392U (en) High voltage electrostatic precipitator tail electric field intelligent brush and sweep shaking device
CN205019894U (en) Novel old and useless rubber desulfurization waste gas dust collecting equipment of high -efficient environmental protection combined type
CN204017609U (en) A kind of frequency conversion type central authorities cleaner
CN204996576U (en) Adopt granule to erode board -like high temperature electrostatic precipitator device of line of deashing

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant