CN109405571A - A kind of electric furnace smoke evacuation dust collecting process - Google Patents
A kind of electric furnace smoke evacuation dust collecting process Download PDFInfo
- Publication number
- CN109405571A CN109405571A CN201811192297.0A CN201811192297A CN109405571A CN 109405571 A CN109405571 A CN 109405571A CN 201811192297 A CN201811192297 A CN 201811192297A CN 109405571 A CN109405571 A CN 109405571A
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- dust removal
- gas
- electric furnace
- fan
- cooling system
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- 239000000428 dust Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000008569 process Effects 0.000 title claims abstract description 19
- 239000000779 smoke Substances 0.000 title claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 32
- 230000005484 gravity Effects 0.000 claims abstract description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003546 flue gas Substances 0.000 claims abstract description 11
- 239000000112 cooling gas Substances 0.000 claims abstract description 5
- 230000000391 smoking effect Effects 0.000 claims abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 abstract description 3
- 239000000835 fiber Substances 0.000 description 11
- 239000012716 precipitator Substances 0.000 description 11
- 239000002245 particle Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 230000036413 temperature sense Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/30—Arrangements for extraction or collection of waste gases; Hoods therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/46—Auxiliary equipment or operation thereof controlling filtration automatic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0028—Regulation
- F27D2019/0056—Regulation involving cooling
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
本发明涉及除尘环保技术领域，具体涉及一种电炉排烟除尘工艺，其技术路线的工艺流程为：电炉内含尘烟气通过导流罩与吸烟罩进入到管道中，经水冷烟道初步冷却后由第一风机送入到重力沉降室中进行粗除尘，粗除尘后气体通过冷却系统中的电磁阀与换热器进行再次冷却，冷却气体经气体混合阀混合后通过温度感应器进入到布袋式除尘器进行精除尘，精除尘气体由第二风机送入到排气筒中，并由排气筒排出，本发明设计合理，通过合理的配置提高了除尘系统的除尘效率，使气体排放达标；同时通过冷却系统的设置能够避免高温或低温对布袋式除尘器造成的损坏，延长了布袋式除尘器的使用寿命，节约了运行成本，具有较强的适用性。
The invention relates to the technical field of dust removal and environmental protection, in particular to an electric furnace smoke and dust removal process. The technical process of the technical route is as follows: the dust-laden flue gas in the electric furnace enters a pipe through a guide hood and a smoking hood, and is initially cooled by a water-cooled flue. Then, the first fan is sent to the gravity settling chamber for rough dust removal. After rough dust removal, the gas is re-cooled through the solenoid valve in the cooling system and the heat exchanger. The cooling gas is mixed by the gas mixing valve and then enters the cloth bag through the temperature sensor. The dust collector carries out fine dust removal, and the fine dust removal gas is fed into the exhaust pipe by the second fan and discharged from the exhaust pipe. The design of the invention is reasonable, and the dust removal efficiency of the dust removal system is improved through reasonable configuration, so that the gas emission reaches the standard; At the same time, the setting of the cooling system can avoid the damage to the bag filter caused by high temperature or low temperature, prolong the service life of the bag filter, save the operating cost, and have strong applicability.
Description
Technical field
The present invention relates to dedusting environment friendly technical fields, and in particular to a kind of electric furnace smoke evacuation dust collecting process.
Background technique
Electric furnace is the electric energy in furnace to be converted into the heating furnace that heat heats workpiece, and electric furnace can be divided into resistance furnace, induction
Furnace, electric arc furnaces, plasma heating furnace, electron beam furnace etc..Compare with Fuel Furnace, the advantages of electric furnace has: furnace atmosphere is easy to control；Material
Heating is fast；Heating temperature is high；Easy control of temperature；Production process is easier to realize mechanization and automation；Labour health condition is good；
The thermal efficiency is high；Good product quality, and it is more environmentally-friendly, be conducive to alleviate the environmental problem being on the rise.China was in 50 years 20th century
In generation, starts to produce electric furnace, is miniature resistance furnace, intermediate frequency furnace, electric furnace arrangement for producing steel etc. in early days.Control atmosphere is developed the sixties
Resistance furnace and vacuum resistance furnace, vacuum arc furnace ignition etc..The seventies and eighties, electric furnace arrangement for producing steel individual capacity developed to 75t, and was made
Continous way gas carbruizing furance, ion nitriding furnace, vacuum quencher, micro-wave oven, single crystal growing furnace, far-infrared oven etc..The nineties, 40t are straight
Stream electric furnace arrangement for producing steel, 250tLF type ladle refining furnace are developed in succession and put into industry park plan.
In electric furnace use process, since matter melts and burning can inevitably be produced into flue gas.In the flue gas of generation often
With a large amount of dust, if directly excluding in atmosphere and will pollute the environment.With Environmental Protection in China require continuous improvement,
The requirement of electric stove dust is also promoted constantly.Sedimentation bed is relatively conventional one of cleaner, and expansion chamber is to make ash-laden gas
Grit in stream is by gravity natural subsidence, to reach the device of purification gas.This device simple, cost with structure
Low, construction is easy (can with brick or with welded steel plate), maintenance management facilitates, resistance small (generally 50~150Pa), resistance to height
The advantages that warm.Due to its be dusted by gravity, though so expansion chamber can effectively settle some larger particles,
Relatively fine particle can not be removed, is not able to satisfy the requirement of environment protection emission.Compared with expansion chamber, fiber bag precipitator has preferable
Dust removing effects, though the requirement of environment protection emission is able to satisfy, due to non-refractory, if using at high temperature for a long time, easily
Cause the damage of equipment.
Summary of the invention
It is set forth above for solving the problems, such as the invention discloses a kind of electric furnace smoke evacuation dust collecting process.
Specific technical solution is as follows:
A kind of electric furnace is discharged fume dust collecting process, and ash-laden gas is entered in pipeline by pod and range hood in electric furnace, warp
Water-cooled flue is sent in gravity settling chamber by the first blower after tentatively cooling down and carries out rough dedusting, and gas passes through cooling after rough dedusting
Solenoid valve in system is cooled down again with heat exchanger, cooling gas after gas mixing valve mixes by temperature inductor into
Enter to fiber bag precipitator and carry out refined dedusting, refined dedusting gas is sent in exhaust tube by the second blower, and is discharged by exhaust tube.
Preferably, the solenoid valve in the cooling system is identical as the heat exchanger quantity, and the cooling system
It is interior at least provided with solenoid valve and heat exchanger described in three groups.
Preferably, the temperature inductor and cooling system are electrically connected with controller respectively.
Preferably, when the temperature inductor detects the temperature of gas lower than 120 DEG C or higher than 150 DEG C, the cooling
Plurality of electromagnetic valve in system can be closed or be opened with heat exchanger, and temperature is adjusted between 120-150 DEG C.
Preferably, spacing≤1.3.m between the pod and range hood.
Preferably, second blower is dedusting fan.
Preferably, second blower into and out of air port by the pipeline respectively with the fiber bag precipitator and row
Inflator is connected.
Preferably, first blower is heavy with the water-cooled flue and gravity respectively by the pipeline into and out of air port
Drop room is connected.
The utility model has the advantages that
The present invention has rational design, and the efficiency of dust collection of dust pelletizing system is improved by reasonably configuring, and makes gas emission compliance；
The damage caused by fiber bag precipitator of high temperature or low temperature can be avoided by the setting of cooling system simultaneously, extend cloth-bag type
The service life of deduster, has saved operating cost, has stronger applicability.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1: process flow chart of the invention；
Fig. 2: the principle of the present invention figure.
Appended drawing reference is as follows: 1, electric furnace, 2, pod, 3, range hood, 4, water-cooled flue, the 5, first blower, 6, gravity it is heavy
Room, 7, solenoid valve, 8, heat exchanger, 9, gas mixing valve, 10, temperature inductor, 11, fiber bag precipitator, the 12, second wind drop
Machine, 13, exhaust tube, 14, pipeline, 15, cooling system.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
In conjunction with Fig. 2, referring to Fig. 1: a kind of electric furnace is discharged fume dust collecting process, and ash-laden gas passes through pod 2 and smoking in electric furnace 1
Cover 3 enters in pipeline 14, is sent in gravity settling chamber 6 after the tentatively cooling of water cooled flue 4 by the first blower 5 and is slightly removed
Dirt, gas is cooled down by the solenoid valve 7 in cooling system 15 with heat exchanger 8 again after rough dedusting, and cooling gas is through gas
Mixing valve 9 enters fiber bag precipitator 11 by temperature inductor 10 after mixing and carries out refined dedusting, and refined dedusting gas is by second
Blower 12 is sent in exhaust tube 13, and is discharged by exhaust tube 13.
Specifically, the solenoid valve 7 in cooling system 15 is identical as 8 quantity of heat exchanger, and is at least arranged in cooling system 15
There are three groups of solenoid valves 7 and heat exchanger 8, temperature inductor 10 and cooling system 15 are electrically connected with controller respectively, temperature sense
Device 10 detects plurality of electromagnetic valve 7 and heat exchanger 8 of the temperature of gas lower than 120 DEG C or when being higher than 150 DEG C, in cooling system 15
It can be turned on or off, temperature is adjusted between 120-150 DEG C, spacing≤1.3m between pod 2 and range hood 3, the
Two blowers 12 be dedusting fan, the second blower 12 into and out of air port by pipeline 14 respectively with fiber bag precipitator 11 and exhaust
Cylinder 13 is connected, and the first blower 5 is connected with water-cooled flue 4 and gravity settling chamber 6 into and out of air port by pipeline 14 respectively.
Process flow:
1, ash-laden gas is entered in pipeline 14 by pod 2 and range hood 3 in electric furnace 1, and water cooled flue 4 is preliminary cold
But it is sent in gravity settling chamber 6 after by the first blower 5 and carries out rough dedusting, remove the larger particles in flue gas, gas after rough dedusting
Body is cooled down by the solenoid valve 7 in cooling system 15 with heat exchanger 8 again, and cooling gas is after the mixing of gas mixing valve 9
Fiber bag precipitator 11 is entered by temperature inductor 10 and carries out refined dedusting, and refined dedusting gas is by 12 row of being sent to of the second blower
In inflator 13, and it is discharged by exhaust tube 13.
Wherein pod 2 and range hood 3 can be avoided the case where flue gas is run out of from pod 2, water cooling cigarette apart from≤1.3m
The setting in road 4 can play a certain protective role the phenomenon that avoiding the first blower 5 from overheating, gravity settling chamber 6 to the first blower 5
With preferable collecting effect and there is preferable heat resistance to large dust particle, so before being positioned in cooling system 15
End, the flue gas for removing larger dust granule cools through cooling system 15 to be re-fed into fiber bag precipitator 11, to avoid
The too high risk for causing fiber bag precipitator 11 to damage of flue-gas temperature, extends the service life of fiber bag precipitator 11, cloth bag
After formula deduster 11 filters the dust particles of smaller particle, is conveyed and be discharged from exhaust tube 13, the second wind by the second blower 12
Machine 12 selects dedusting fan that can further be filtered to gas, reduces the particle in gas, improves efficiency of dust collection.
2, when the temperature that temperature inductor 10 detects is higher than 150 DEG C, signal is issued controller by temperature inductor 10, control
Device control cooling system 15 processed increases one group of solenoid valve 7 and heat exchanger 8 to speed the radiating efficiency of flue gas, and cooling system 15 is cooling
Flue gas afterwards is sent at temperature inductor 10, after the mixing of gas mixing valve 9 when temperature inductor 10 detects that temperature is still high
When 150 DEG C, the temperature inductor 7 in temperature inductor 15 can open one group to accelerate to radiate, when temperature sense again with heat exchanger 8
When the temperature for answering device 10 to detect is lower than 120 DEG C, temperature inductor 10 sends a signal to controller, and one group of controller closing is cold
But the solenoid valve 7 in system 15 and heat exchanger 8, to control temperature between 120-150 DEG C.
This kind setting can control the flue-gas temperature after cooling of cooling system 15 between 120-150 DEG C, avoid cloth bag
Damage caused by formula deduster 11 works at relatively high temperatures for a long time, while also avoiding that temperature is too low, and steam is in cloth-bag type
It is condensed on the deflector of deduster 11, and then leads to the risk for accelerating deflector accelerated ageing.Wherein 10 front end of temperature inductor
The setting of gas mixing valve 9 can play the role of mixing to gas, keep the temperature of gas more uniform, and then make temperature inductor
10 temperature detection is more accurate.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811192297.0A CN109405571A (en) | 2018-10-12 | 2018-10-12 | A kind of electric furnace smoke evacuation dust collecting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811192297.0A CN109405571A (en) | 2018-10-12 | 2018-10-12 | A kind of electric furnace smoke evacuation dust collecting process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109405571A true CN109405571A (en) | 2019-03-01 |
Family
ID=65467152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811192297.0A Pending CN109405571A (en) | 2018-10-12 | 2018-10-12 | A kind of electric furnace smoke evacuation dust collecting process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109405571A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821303A (en) * | 2019-03-27 | 2019-05-31 | 上海超高环保科技股份有限公司 | High temperature resistant plastic burning board dust removal device and dust removal method |
| CN112146447A (en) * | 2020-09-15 | 2020-12-29 | 广西柳州钢铁集团有限公司 | Method for preventing ash spraying of air release valve of double-chamber kiln |
| CN112556417A (en) * | 2020-12-09 | 2021-03-26 | 张家港宏昌钢板有限公司 | Electric furnace smelting energy-saving equipment and use method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11169628A (en) * | 1997-12-15 | 1999-06-29 | Kyoei Sangyo Kk | Combustion furnace exhaust gas treatment method and apparatus |
| CN201136877Y (en) * | 2007-12-06 | 2008-10-22 | 北京博鹏北科科技有限公司 | A converter gas waste heat recovery power generation and dry dust removal device |
| CN102243025A (en) * | 2011-06-20 | 2011-11-16 | 北京中冶设备研究设计总院有限公司 | Process and device for recycling flue gas afterheat of electric furnace |
| CN108559814A (en) * | 2018-07-05 | 2018-09-21 | 安徽顺达环保科技股份有限公司 | A kind of dedusting of blast furnace gas technique |
-
2018
- 2018-10-12 CN CN201811192297.0A patent/CN109405571A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11169628A (en) * | 1997-12-15 | 1999-06-29 | Kyoei Sangyo Kk | Combustion furnace exhaust gas treatment method and apparatus |
| CN201136877Y (en) * | 2007-12-06 | 2008-10-22 | 北京博鹏北科科技有限公司 | A converter gas waste heat recovery power generation and dry dust removal device |
| CN102243025A (en) * | 2011-06-20 | 2011-11-16 | 北京中冶设备研究设计总院有限公司 | Process and device for recycling flue gas afterheat of electric furnace |
| CN108559814A (en) * | 2018-07-05 | 2018-09-21 | 安徽顺达环保科技股份有限公司 | A kind of dedusting of blast furnace gas technique |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821303A (en) * | 2019-03-27 | 2019-05-31 | 上海超高环保科技股份有限公司 | High temperature resistant plastic burning board dust removal device and dust removal method |
| CN112146447A (en) * | 2020-09-15 | 2020-12-29 | 广西柳州钢铁集团有限公司 | Method for preventing ash spraying of air release valve of double-chamber kiln |
| CN112556417A (en) * | 2020-12-09 | 2021-03-26 | 张家港宏昌钢板有限公司 | Electric furnace smelting energy-saving equipment and use method thereof |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190301 |
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