CN200955056Y - Blast-furnace coal-gas dry-method dust-control safety diffusion apparatus - Google Patents
Blast-furnace coal-gas dry-method dust-control safety diffusion apparatus Download PDFInfo
- Publication number
- CN200955056Y CN200955056Y CN 200620139163 CN200620139163U CN200955056Y CN 200955056 Y CN200955056 Y CN 200955056Y CN 200620139163 CN200620139163 CN 200620139163 CN 200620139163 U CN200620139163 U CN 200620139163U CN 200955056 Y CN200955056 Y CN 200955056Y
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- China
- Prior art keywords
- gas
- blast furnace
- bleeder
- temperature
- coal gas
- 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.)
- Expired - Lifetime
Links
- 239000003034 coal gas Substances 0.000 title claims description 29
- 238000009792 diffusion process Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title description 10
- 239000007789 gas Substances 0.000 claims abstract description 44
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 7
- 238000011049 filling Methods 0.000 claims abstract description 6
- 230000000740 bleeding effect Effects 0.000 claims description 10
- 238000010410 dusting Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000009970 fire resistant effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000428 dust Substances 0.000 description 14
- 238000001816 cooling Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000012716 precipitator Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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- Blast Furnaces (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model relates to a dry dedusting safety protection device of blast furnace gas, which is characterized in that a main pipe of the dry dedusting crude gas of blast furnace gas is provided with a gas discharge device and contains a discharge pipe positioned on the crude gas main pipe, a discharge valve disposed on the top of the discharge pipe, a nitrogen or steam filling valve at the lower part of the discharge pipe. Therefore, through the utility model can discharge most of the gas exceeding the temperature standard and thus guarantee the safety of blast furnace production and the dry dedusting device, thereby becoming a set system protection device in the case of the temperature out of control.
Description
Technical field
The invention belongs to Iron And Steel Industry iron-smelting blast furnace coal gas dust removal technical field, be specially adapted to the not normal emergency processing of temperature of gas in the coal gas dry-method dedusting.Can be used for bag-type dust or electric precipitator.
Background technology
Blast furnace gas dry dusting is the new technology of a coal gas dust removal.Principle is to adopt high-temperature filter material to purify coal gas with filtering method, or purifies coal gas by the dry electric precipitation device, is different from traditional wet dedusting.
Dry method dust has that depuration quality is good, energy-conservation, water saving, environmental protection, investment and production charges is low, take up an area of advantages such as few, therefore has bright development prospect.
Though what use is high-temperature filter material, but it still has certain temperature requirement, several filter clothes such as current use require normal working temperature 100～220 ℃ of scopes, the highlyest be no more than 260 ℃, too high damage filter cloth, reduction of service life, too low then possibility dewfall influences the fly-ash separator works better, so sack cleaner has certain requirement to gas temperature.Same electric precipitator also has temperature requirement.
The furnace top gas temperature major part is 120～250 ℃ of scopes during blast-furnace smelting.Usually because smelting situation complexity, extremes of temperature is a common occurrence, such as blast wandering, is elevated to sometimes more than 600～700 ℃ even higher, and this moment, furnace roof equipment must be protected, and coal gas of high temperature also can't use dry method dust.Coal gas system is set up for this reason several cooling measures, as catching up with stockline cooling etc. in the cooling of the scatterer before furnace roof spray cooling, the fly-ash separator, the operation; The long-term cloth bag dewfall that makes easily on the low side of opposite throat temperature, wet ash bonding can promote gas temperature by heating unit.Although all measure and ensures are arranged, temperature upset condition generation, particularly high temperature accident are still arranged, for example material or pipeline trip appear collapsing in blast furnace, moment furnace roof generation abnormal high temperature, several seconds or several minutes can reach thousands of degree.This moment, water spray all can't be lowered the temperature fully, can not diffuse from furnace roof, diffused valve otherwise will burn; Coal gas of high temperature can not be introduced bag-type dust or electric precipitation, otherwise can cause another kind of accident.Therefore the heating-cooling measure is complete more also has defence when causing temperature control, find a path should for this moment this high low temperature coal gas.Therefore diffusing from gas main " end " is exactly a good method of dealing with problems, many approach of subduing accident.
Some factory's dry method dust also is provided with the raw gas bleeder, and effect only is the usefulness of the blow-on stage drawing low temperature coal gas, mostly is disposable use, later forever cut off with butterfly valve and blank-plate valve, not having elimination accident high and low temperature function, and troublesome poeration, can not start fast.The present invention can diffuse rapidly or cut off, and is the new device of a high low temperature coal gas of processing accident, can be referred to as the quick bleeding device of accident coal gas.
Summary of the invention
The purpose of this utility model is exactly to overcome the safety that blast furnace gas dry dusting coal gas is overheated or low excessively in the prior art to diffuse problem.Blast furnace gas dry dusting safety bleeding device for realizing that goal of the invention of the present utility model is related is characterized in that: be provided with the coal gas diffusion device on blast furnace gas dry dusting raw gas house steward.
In bulk the putting of described side comprises bleeder and the vertical valve that diffuses of bleeder that is located on the raw gas house steward, and the nitrogen or the steam filling valve of bleeder bottom.
Described raw gas house steward, bleeder inwall should have fire-resistant sprayed coating.
The utility model is unusual at existing dry method dust gas temperature, high temperature accident particularly, and existing heating-cooling means have been ineffective, do not have the new way of dealing with problems under the situation of other outlets again.High temperature out of control occurring eases contradictions with quick emission coal gas method; Also can serve the same role during low temperature.Main points are that the raw gas before bag-type dust or electric precipitation is responsible for terminal or other positions increase a bleeder vertically upward, and hydraulic pressure or electronic elevator gas bleeding valve are installed in the top.Close at ordinary times, diffuse valve during accident and open fast and diffuse part coal gas, the dry method dust casing quantity of operation is minimized, protect casing and filter bag or electrode to greatest extent.Owing to be that end diffuses, coal gas is nonflammable, has protected and has diffused valve, is unlikely to as easy burning out furnace roof.
The utility model is a kind of emergent means outside the existing multiple heating-cooling means of coal gas, is a new measure of safety precaution.Because investment is few, technology is uncomplicated again, therefore can be used on all blast furnace gas dry dusting technologies.
Bleeder preferably is convenient to support near casing, and height should meet the gas safety rules.Diffuse valve and should establish inspection platform and crane girder so that change or maintenance.
Because the emission coal gas temperature may be very high, at the bleeder inwall heat-resisting sprayed coating should be arranged.Therefore this device does not consider the coal gas ignition requirement because just accidental the use is limited to the device structure characteristics again.Lectotype selection is fully identical with bleeding valve with principle of work.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 1 is a structural representation of the present utility model.
1. raw gas bleeders, 2. fast opening and closing gas bleeding valve 3. raw gas house stewards, 4. bag-type dusts or electric precipitator casing 5. inspection platform 6. crane girders, 7. nitrogen or steam filling valves among the figure
Embodiment
Accident coal gas diffusion tower can be arranged on the raw gas house steward after gravitational dust collection or the tornado dust collector, and house steward is terminal better, as far as possible vertically upward, avoids horizontal section or has the dead angle of dust stratification.The emission coal gas amount should be most of coal gas.Inside pipe wall has certain thickness fire-proof spray coating with the protection tube wall.Diffuse high pressure gas of cat head end installation and diffuse valve, fast opening and closing manually or is automatically controlled in hydraulic pressure or electrical hoist operation.Close at ordinary times, just under the uncontrollable accidental state of gas temperature, use, therefore may be in closing condition for a long time.
Consider to diffuse valve from security standpoint the height that diffuses that conforms with the regulations must be arranged; Establish inspection platform and necessary hanging device; Nitrogen filling pipeline also to be arranged, use so that drive coal gas during damping down.
In Fig. 1 raw gas bleeder 1, bear gas temperature diffusing when not normal, raw gas more than half can be diffused, retained part coal gas filtration, purification, make filter bag reduce to bottom line because of temperature exceeding standard damages, produce also unlikely interruption, accident only needs to change less casing filter bag (or electrode) later.The bleeder top is that high pressure gas diffuses valve 2, can open fast most of coal gas diffusion, has replaced furnace roof to diffuse, and avoids accident to take place, and closes at ordinary times and bears gas pressure and do not leak.Because accident is rare so only play the safety precaution effect.Bleeder with raw gas house steward 3, link to each other, should avoid horizontal pipeline section vertically upward, reduce dust stratification and obstruction.Emergency diffusion constantly only makes small part coal gas enter casing 4, carry out filtration, purification, avoids producing interrupting, and most of casing cuts out.In order to diffuse the Maintenance and Repair of valve, be provided with inspection platform 5 and maintenance crane girder 6 on the bleeder top.When blow-on or damping down, multiple wind, nitrogen or steam filling should be arranged, thus bleeder is provided with nitrogen or vapour pipe and valve 7, to guarantee production safety.
Claims (3)
1, a kind of blast furnace gas dry dusting safety bleeding device is characterized in that: be provided with the coal gas diffusion device on blast furnace gas dry dusting raw gas house steward (3).
2, blast furnace gas dry dusting safety bleeding device as claimed in claim 1 is characterized in that: described bleeding device comprises bleeder (1) and vertical nitrogen or the steam filling valve (7) that diffuses valve (2), reaches the bleeder bottom of bleeder (1) that is located on the raw gas house steward (3).
3, blast furnace gas dry dusting safety bleeding device as claimed in claim 1 is characterized in that: described raw gas house steward (3), bleeder (1) inwall should have fire-resistant sprayed coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620139163 CN200955056Y (en) | 2006-09-08 | 2006-09-08 | Blast-furnace coal-gas dry-method dust-control safety diffusion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620139163 CN200955056Y (en) | 2006-09-08 | 2006-09-08 | Blast-furnace coal-gas dry-method dust-control safety diffusion apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200955056Y true CN200955056Y (en) | 2007-10-03 |
Family
ID=38773639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620139163 Expired - Lifetime CN200955056Y (en) | 2006-09-08 | 2006-09-08 | Blast-furnace coal-gas dry-method dust-control safety diffusion apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200955056Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327855A (en) * | 2017-07-26 | 2017-11-07 | 柳州钢铁股份有限公司 | Coal oven dithio-gas is diffused and igniter |
| CN111961775A (en) * | 2020-09-03 | 2020-11-20 | 山西太钢不锈钢股份有限公司 | Method for reducing dust deposition of dry-process raw gas main pipeline |
-
2006
- 2006-09-08 CN CN 200620139163 patent/CN200955056Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327855A (en) * | 2017-07-26 | 2017-11-07 | 柳州钢铁股份有限公司 | Coal oven dithio-gas is diffused and igniter |
| CN107327855B (en) * | 2017-07-26 | 2023-06-06 | 柳州钢铁股份有限公司 | Raw coke oven gas diffusing and igniting device |
| CN111961775A (en) * | 2020-09-03 | 2020-11-20 | 山西太钢不锈钢股份有限公司 | Method for reducing dust deposition of dry-process raw gas main pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071003 |
|
| EXPY | Termination of patent right or utility model |