CN208472005U - A kind of dust pelletizing system - Google Patents
A kind of dust pelletizing system Download PDFInfo
- Publication number
- CN208472005U CN208472005U CN201721880001.5U CN201721880001U CN208472005U CN 208472005 U CN208472005 U CN 208472005U CN 201721880001 U CN201721880001 U CN 201721880001U CN 208472005 U CN208472005 U CN 208472005U
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- CN
- China
- Prior art keywords
- cyclone dust
- dust collectors
- cylinder
- dedusting
- branch pipe
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- 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.)
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- Cyclones (AREA)
Abstract
The utility model discloses a kind of dust pelletizing systems, include cyclone dust collectors and bag filter；The bag filter includes multiple dedusting cylinders；The dedusting cylinder is distributed around the cyclone dust collectors surrounding.Tthe utility model system is compact-sized, defeated ash transhipment is convenient, occupied area is small, can effectively avoid dust granule deposition blocking pipeline, can the pressure oscillation of active balance blast furnace gas pipeline network, can effectively reduce pipe flushing, long service life, operation noise be small, lifting maintenance flexibly, it is safe and reliable.
Description
Technical field
The utility model relates to a kind of dust-extraction unit, in particular to a kind of dust pelletizing system.
Background technique
At present in smelter blast furnace gas dry dusting technique, the blast furnace raw gas of the high dustiness of high temperature is needed first by furnace
Top raw coke oven gas general pipeline is aerial to be connected to cyclone dust collectors (gravitational precipitator), removes in cyclone dust collectors (gravitational precipitator) interior first step
After dirt, then by the big drag bar compensator of standpipe, length is typically larger than 10m and horizontal nozzle is connected to bag filter, bag-type dust
Device cylinder is single or double arrangement, and raw coke oven gas pipeline enters from cylinder middle and lower part, and clean coal feed channel is from cylinder middle and upper part (on or
Portion) it picks out, bag filter purified gas general pipeline is directly accessed blast furnace gas pipeline network out, then passes through more than reducer unit or blast furnace gas
Enter gas after pressing turbine generator (Blast Furnace Top Gas Recovery Turbine Unit, TRT) decompression
Cabinet is finally sent to each user.
Traditional blast furnace gas dry dusting technique, there are the big drag bar compensator service life of standpipe is short, the big pull rod of standpipe
Compensator easily deposits the disadvantages of blocking pipeline to horizontal nozzle elbow dust granule, and to ensure dust granule fluidization,
It is exported to that gas speed in bag filter entrance segment pipe is excessively high (usual > 18m/s), and air-flow is to pipeline from gravitational precipitator
Inner wall washes away seriously, extreme influence dust pelletizing system service life.
In traditional blast furnace gas dry dusting technique, since bag filter cylinder is single or double arrangement, each cylinder
The load of body, that is, coal gas dust removal tolerance is inconsistent, causes the service life of cloth bag in each cylinder there are huge difference, deduster
Efficiency of dust collection is lower, dust removing effects are poor, while easily causing pressure, the flow waves in bag filter outlet clean coal feed channel
It is dynamic.Bag filter cylinder is that single or double arrangement also easily causes cylindrical apparatus lifting in part apart from too long, equipment replacement inspection
Difficulty is repaired, once safety accident occurs, rescue personnel enters or withdraw the overlong time etc. of danger zone.
Traditional blast furnace gas dry dusting technique there is also cyclone dust collectors (gravitational precipitator) and bag filter it
Between defeated grey channel it is too long, haulage vehicle turning radius is larger, and whole system occupied area is larger, difficult arrangement, and runs noise
The disadvantages of larger.Existing blast furnace gas dry dusting technique, there are the above shortcomings, seriously affect the normal production of enterprise
With the personal safety of employee, it has also become the serious obstruction of smelter development.
Summary of the invention
Purpose of utility model: the utility model provides that a kind of compact-sized, defeated ash transhipment is convenient, occupied area is small, can have
Effect avoid dust granule deposition blocking pipeline, can the pressure oscillation of active balance blast furnace gas pipeline network, can effectively reduce pipe flushing,
Long service life, operation noise are small, flexible, safe and reliable dust pelletizing system is overhauled in lifting, can be used for dedusting of blast furnace gas and its
The dedusting of his gas.
Technical solution: a kind of dust pelletizing system described in the utility model includes cyclone dust collectors and bag filter；The cloth
Bag dust collector includes several dedusting cylinders；The dedusting cylinder is distributed in the cyclone dust collectors surrounding.The utility model removes
For dirt system when as blast-furnace gas dedusting system, the first step removes greater particle size ash in blast furnace raw gas by cyclone dust collectors
Dirt, raw coke oven gas dustiness can be down to≤10g/Nm3, second step pass through the dedusting of bag-type dusting cylinder, it can be ensured that blast furnace purified gas contains
Dust quantity≤10mg/Nm3。
Dedusting cylinder is equipped with keel, filter bag and pulse cleaning system etc..
It is provided with surge tank at the top of the cyclone dust collectors, demarcation plate is provided between surge tank and cyclone dust collectors.
The first superpressure bleeding device, the first general pipeline and the second general pipeline are equipped at the top of the cyclone dust collectors；It is described the first to surpass
Pressure bleeding device one end is located in cyclone dust collectors cylinder, passes through surge tank, picks out from cyclone dust collectors top；Described first is total
Pipe accesses at the top of cyclone dust collectors, surge tank is passed through, into cyclone dust collectors cylinder；Second general pipeline is opened on whirlwind
Dust remover roof.
The first branch pipe and the second branch pipe are provided between the dedusting cylinder and cyclone dust collectors；Second branch pipe removes certainly
Dirt barrel body middle and upper part picks out, and is connected in surge tank, and purified gas enters blast furnace gas pipeline network by purified gas general pipeline at the top of surge tank again
It is interior.First branch pipe is picked out in the middle part of the cyclone dust collectors and is connect with dedusting cylinder, as dedusting gas gas from cyclone dust collectors
Into the pipeline of dedusting cylinder.
Sample tap and temperature, pressure measurement are equipped near cyclone dust collectors dedusting gas vent, near surge tank；Sampling
Mouth is used for sampling analysis calorific value of gas and dustiness, and temperature, pressure metering interlocking cyclone dust collectors and dedusting cylinder safety top are put
It is in bulk to set and import and export pipeline disconnecting device, such as superpressure, moisture condensation, burning bag accident occurs, unlatching safety release dress can be interlocked
Set and close inlet and outlet pipeline disconnecting device.
First branch pipe includes at least valve, hand hole and purging diffusing facility；First bottom of the tube is equipped with bracket
Support.As the case may be, big drag bar compensator, butterfly valve, glasses valve can be also equipped on the first branch pipe.
Second branch pipe includes at least valve, hand hole and purging diffusing facility；First bottom of the tube is equipped with bracket
Support.As the case may be, big drag bar compensator, butterfly valve, glasses valve can be also equipped on the first branch pipe.
The second superpressure bleeding device is equipped at the top of the dedusting cylinder, the second superpressure bleeding device is picked out from the top of cylinder.
The cyclone dust collectors bottom includes the first ash bucket and ash-pan；First ash bucket is equipped with vibrator and humidification
Device.
The dedusting cylinder body bottom is equipped with the second ash bucket and pneumatic ash transmitting system；Second ash bucket be equipped with vibrator and
Humidifier；Dust is delivered to cyclone dust collectors bottom ash-pan by pneumatic ash transmitting system in second ash bucket.
Local winter temperature is lower, and the bottom ash bucket of cyclone dust collectors and dedusting cylinder can wrap round heat tracing band.
Reinforcing rib is provided on the demarcation plate.
Above-mentioned dust pelletizing system cyclone dust collectors, surge tank are equipped with cleaning maintenance manhole, bag-type dusting on dedusting cylinder
Manhole can also facilitate periodic replacement damaged filter bag on device cylinder.
Dust pelletizing system described in the utility model is mounted on steel-frame structure, frame structure be equipped with electronic lifting cucurbit,
Hole for hoist, steel platform, ladder, protective fence, awning, illumination, lightning protection etc..The dust pelletizing system of the utility model due to system it
Between it is compact-sized, lifting path greatly shortens, the convenience of entire dust pelletizing system installation.
Working method: when Tthe utility model system is run, the first general pipeline is picked out from blast furnace roof, passes through surge tank, is entered
In cyclone dust collectors, first step dedusting is carried out, removes greater particle size dust in gas, dustiness can be down to≤10g/Nm3, revolve out
The first branch pipe of wind deduster enters in bag-type dusting cylinder, carries out second step dedusting by filter bag, it can be ensured that dustiness in gas
≤10mg/Nm3.Dedusting particle is collected by equipment lower part ash bucket in cyclone dust collectors and bag-type dusting cylinder, bag-type dusting cylinder
Dedusting particle is delivered in the ash-pan of the first ash bucket of cyclone dust collectors lower part by pneumatic ash transmitting system in second ash bucket, cyclone dust removal
Dedusting particle also enters in ash-pan in the first ash bucket of device, and ash-pan outlet is equipped with quick coupling, can dock with carrier, can basis
Dedusting particle in concrete condition periodic cleaning ash-pan.
The utility model has the advantages that (1) the utility model eliminates in traditional blast furnace gas dry dusting technique gravitational precipitator to cloth
The big drag bar compensator of standpipe and horizontal nozzle between bag dust collector, it is short to solve the big drag bar compensator service life of standpipe, needs
Often to replace the shortcomings that blocking pipeline is easily deposited with horizontal nozzle end elbow dust granule, it is ensured that the stabilization of dust pelletizing system
Operation reduces maintenance replacement rate, saves maintenance renewal cost；(2) the first branch pipe of the utility model cyclone dust collectors is used as and removes
The channel of dust and gas body is directly entered each dedusting cylinder, and the air-flow velocity with dedusting particle is lower, can greatly mitigate to pipeline and set
Standby scouring effect can greatly extend the service life of dust pelletizing system；(3) the gas disengaging of the utility model bag-type dusting cylinder
The mouth visual concrete condition of branch pipe decides whether using big drag bar compensator, this system characteristics of compact layout, desirable to disappear FlexbleJoint i.e.
Non-ripple compensator in a whole set of blast-furnace gas dedusting system can greatly reduce the maintenance replacement rate of dust pelletizing system and save maintenance more
Change expense；(4) the utility model is arranged using bag-type dusting cylinder around cyclone dust collectors, ensure that the negative of bag-type dusting cylinder
Lotus is consistent, optimizes the efficiency of dust collection and dust removing effects of filter bag in cylinder, extends the service life of filter bag, solves traditional
In blast furnace gas dry dusting technique, since bag filter cylinder is single or double arrangement, the load of each cylinder is inconsistent,
Cause the service life of cloth bag in each cylinder there are huge difference, the efficiency of dust collection of deduster is lower, dust removing effects are poor asks
Topic；(5) the utility model is introduced into after surge tank from the gas that dedusting cylinder purifies and imports in gas main again, and surge tank can be put down
The pressure of weighing apparatus bag house outlet gas, flowed fluctuation；(6) Tthe utility model system is using annular ceiling mounted tracks, each equipment
Lifting Distance Shortened, equipment replacement maintenance is more convenient, and safety accident once occurs, and also shortens rescue personnel's entrance
Or withdraw the time of danger zone；(7) ash bucket of the utility model bag filter is radial to the defeated ash of cyclone dust collectors, and pocket type removes
The intracorporal dedusting particle of dirt barrel is all concentrated in the ash-pan of cyclone dust collectors lower part, is greatly shortened in conventional dry dust collecting process
Defeated grey channel；(8) the utility model is provided with superpressure bleeding device, and the accidents such as superpressure, moisture condensation, burning bag occur in system, can
Interlocking, which opens superpressure bleeding device and closes inlet and outlet pipeline disconnecting device, can guarantee safety；(9) Tthe utility model system has
Standby occupied area is small, and arrangement is convenient, and it is small to run noise.
Detailed description of the invention
Fig. 1 is the utility model dust pelletizing system schematic diagram；
Fig. 2 is the utility model dust pelletizing system top view.
Specific embodiment
Embodiment 1: as shown in Figure 1, dust pelletizing system includes cyclone dust collectors 1 and bag filter, bag filter includes
The quantity of multiple dedusting cylinders 2, dedusting cylinder can determine as the case may be, can be arranged according to specific Operating condition adjustment spacing,
Size and cylinder quantity；As shown in Fig. 2, dedusting cylinder is distributed around the cyclone dust collectors surrounding, dedusting cylinder is equipped with
Keel, filter bag and pulse cleaning system.It is provided with surge tank 3 at the top of cyclone dust collectors, is set between surge tank 3 and cyclone dust collectors
It is equipped with demarcation plate 4, is provided with reinforcing rib on demarcation plate.The first superpressure bleeding device 5, the first general pipeline are equipped at the top of cyclone dust collectors
6 and second general pipeline 7；First superpressure bleeding device, 5 one end is located in cyclone dust collectors cylinder, surge tank 3 is passed through, from cyclone dust removal
It is picked out at the top of device 1, is higher by diffusion valve (or rupture disk) operating platform > 2.5m；First general pipeline 6 is accessed at the top of cyclone dust collectors,
Across surge tank 3, into 1 cylinder of cyclone dust collectors；Second general pipeline 7 is opened at the top of cyclone dust collectors, the second branch pipe
It picks out, is connected at the top of cyclone dust collectors in blast furnace purified gas surge tank 3, the gas after dirt is again by delaying out from dedusting cylinder middle and upper part
The second general pipeline of tank top is rushed to enter in gas main.The first branch pipe 8 and are provided between dedusting cylinder 2 and cyclone dust collectors 1
Two branch pipes 9；First branch pipe is picked out from the middle part of cyclone dust collectors 1 to be connect with dedusting cylinder 2, as dedusting gas from cyclone dust collectors
1 enters the pipeline of dedusting cylinder 2；First branch pipe includes valve, hand hole 81 and purging diffusing facility, and valve includes butterfly valve 83 and eye
Mirror valve 84, first bottom of the tube are supported equipped with bracket.Second branch pipe 9 is picked out from 2 middle and upper part of dedusting cylinder, is connected in surge tank 3；
First branch pipe includes valve, hand hole 91 and purging diffusing facility, and valve includes butterfly valve 93 and glasses valve 94, clean coal gas branch pipe bottom
It is supported equipped with bracket.In the present embodiment, because of the improvement of cyclone dust collectors and bag filter connection type, both connect the
Big drag bar compensator is not used in one branch pipe and the second branch pipe, is solved in traditional dust pelletizing system because being compensated using big pull rod
High failure rate caused by device, the short problem of service life.
The second superpressure bleeding device 10 is equipped at the top of dedusting cylinder 2, the second superpressure bleeding device is picked out from the top of cylinder, high
Diffusion valve (or rupture disk) operating platform > 2.5m out.
The cyclone dust collectors bottom includes the first ash bucket 11 and ash-pan 12, and the first ash bucket 11 is equipped with vibrator and humidification
Device can prevent dedusting particle to be bonded in ash bucket side wall, and dust is complete by pneumatic ash transmitting system in all bag-type dusting cylinder ash buckets
Portion is delivered to cyclone dust collectors bottom ash-pan.Dedusting cylinder body bottom is equipped with the second ash bucket 13 and pneumatic ash transmitting system 14, this implementation
Example uses pneumatic ash transmitting system, and second ash bucket 13 is equipped with vibrator and humidifier, and dust passes through gas in the second ash bucket
Power ash-transmission system is delivered to cyclone dust collectors bottom ash-pan.The path of pneumatic ash transmitting system of the present invention is extremely shortened, bag-type dust
The dust of device is fed directly to the ash-pan of cyclone dust collectors bottom, and defeated ash is simple and efficient.
If local winter minimum temperature is lower than 0 DEG C, cyclone dust collectors 1 and 2 bottom ash bucket of bag-type dusting cylinder can wind companion
The torrid zone.
Above-mentioned blast-furnace gas dedusting system is mounted on steel-frame structure 15, frame structure be equipped with electronic lifting cucurbit 16,
Hole for hoist 17, steel platform 18, ladder 19, protective fence, awning 20, illumination, lightning protection etc., there are two electric blocks, a use
In equipment hoisting on bag-type dust cylinder, one for equipment hoisting on cyclone dust collectors.Near 1 gas vent of cyclone dust collectors
Sample tap and temperature, pressure measurement are nearby equipped with surge tank 3；Sample tap is used for sampling analysis calorific value of gas and dustiness,
1 the first superpressure bleeding device 5 of top of temperature, pressure metering interlocking cyclone dust collectors and 2 the second superpressure of top of bag-type dusting cylinder are put
It is in bulk to set 10 and inlet pipeline disconnecting device and outlet conduit disconnecting device, such as superpressure, moisture condensation, burning bag accident occurs, it can
Interlocking opens safe diffusion device and closes inlet and outlet pipeline disconnecting device, and disconnecting device includes glasses valve and butterfly valve.Whirlwind removes
Cleaning maintenance manhole is equipped on dirt device, surge tank and dedusting cylinder, manhole can also be conveniently regular on sack cleaner cylinder
Replace damaged filter bag.As shown in Fig. 2, the lifting of this system top is circular orbit, around arrangement hole for hoist, lifting path is short, work
Condition is stablized, and solves the problems, such as the lifting of legacy system.The lifting Distance Shortened of each equipment, equipment replacement in Tthe utility model system
It overhauls more convenient, and safety accident once occurs, also shorten the time that rescue personnel enters or withdraw danger zone.
Embodiment 2: remaining structure is same as Example 1, wherein the first branch pipe 8 and the second branch pipe 9；First branch pipe includes valve
Door, hand hole 81, big drag bar compensator 82 and purging diffusing facility, valve includes butterfly valve 83 and glasses valve 84, and the second branch pipe includes
Valve, hand hole 91, big drag bar compensator 92 and purging diffusing facility, valve includes butterfly valve 93 and glasses valve 94.
Above system is used for dedusting of blast furnace gas, raw coke oven gas enters the first general pipeline 6 from blast furnace roof, passes through surge tank 3,
Into in cyclone dust collectors 1, first step dedusting is carried out, removes greater particle size dust in raw coke oven gas, dustiness can be down to≤10g/
Nm3, 1 first branch pipe 8 of cyclone dust collectors enters in the dedusting cylinder 2 of fiber bag precipitator out, carries out second step by filter bag and removes
Dirt, it can be ensured that blast furnace purified gas dustiness≤10mg/Nm3, dedusting cylinder 2 is gone out by the second branch pipe 9, blast furnace purified gas finally converges
Enter in surge tank 3, from 3 top the second general pipeline 7 access blast furnace gas pipeline network of surge tank.Cyclone dust collectors 1 and cloth-sack-type dust removal
Dedusting particle is collected by equipment lower part ash bucket in the dedusting cylinder 2 of device, in 2 second ash bucket 13 of dedusting cylinder of fiber bag precipitator
Dedusting particle is delivered in 1 first ash bucket of cyclone dust collectors, 11 lower part ash-pan 12 by pneumatic ash transmitting system 14, cyclone dust collectors 1
Dedusting particle also enters in ash-pan 12 in first ash bucket 11, and the outlet of ash-pan 12 is equipped with quick coupling, can dock with carrier, can
According to dedusting particle in project concrete condition periodic cleaning ash-pan.
The utility model both can guarantee the efficiency of dust collection and dust removing effects of blast furnace gas, while have both compact-sized, defeated ash
Transhipment is convenient, occupied area is small, can effectively avoid dust granule deposition blocks pipeline, can active balance blast furnace gas pipeline network pressure
Fluctuation can effectively reduce the advantages that pipe flushing, long service life, operation noise are small, lifting maintenance is flexible, safe and reliable.
Claims (8)
1. a kind of dust pelletizing system, which is characterized in that include cyclone dust collectors (1) and bag filter；The bag filter packet
Containing several dedusting cylinders (2)；The dedusting cylinder (2) is distributed in the cyclone dust collectors (1) surrounding；The cyclone dust collectors
(1) top is provided with surge tank (3), and demarcation plate (4) are provided between the surge tank (3) and the cyclone dust collectors (1)；Institute
It states and is equipped with the first superpressure bleeding device (5), the first general pipeline (6) and the second general pipeline (7) at the top of cyclone dust collectors (1)；Described first
Superpressure bleeding device (5) one end is located in the cyclone dust collectors (1) cylinder, passes through the surge tank (3), removes from the whirlwind
It is picked out at the top of dirt device (1)；First general pipeline (6) is accessed at the top of the cyclone dust collectors (1), surge tank is passed through, into institute
It states in cyclone dust collectors (1) cylinder；Second general pipeline (7) is opened at the top of the cyclone dust collectors (1).
2. dust pelletizing system according to claim 1, which is characterized in that the dedusting cylinder (2) and the cyclone dust collectors
(1) the first branch pipe (8) and the second branch pipe (9) are provided between；Second branch pipe (9) picks out from dedusting cylinder (2) middle and upper part,
It is connected in surge tank (3)；First branch pipe (8) is picked out from the middle part of the cyclone dust collectors (1) with the dedusting cylinder (2) even
It connects.
3. dust pelletizing system according to claim 2, which is characterized in that first branch pipe (8) includes at least valve, hand hole
With purging diffusing facility；First branch pipe (8) bottom is supported equipped with bracket.
4. dust pelletizing system according to claim 2, which is characterized in that second branch pipe (9) includes at least valve, hand hole
With purging diffusing facility；Second branch pipe (9) bottom is supported equipped with bracket.
5. dust pelletizing system according to claim 1, which is characterized in that be equipped with the second superpressure at the top of the dedusting cylinder (2)
Bleeding device (10), the second superpressure bleeding device (10) are picked out from the top of the dedusting cylinder (2).
6. dust pelletizing system according to claim 1, which is characterized in that cyclone dust collectors (1) bottom includes the first ash
Struggle against (11) and ash-pan (12)；First ash bucket (11) is equipped with vibrator and humidifier.
7. dust pelletizing system according to claim 1, which is characterized in that dedusting cylinder (2) bottom includes the second ash bucket
(13) and pneumatic ash transmitting system (14)；It include vibrator and humidifier, the second ash bucket (13) inner powder on second ash bucket (13)
Dirt is delivered to cyclone dust collectors bottom ash-pan by the pneumatic ash transmitting system (14).
8. dust pelletizing system according to claim 1, which is characterized in that be provided with reinforcing rib on the demarcation plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880001.5U CN208472005U (en) | 2017-12-28 | 2017-12-28 | A kind of dust pelletizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880001.5U CN208472005U (en) | 2017-12-28 | 2017-12-28 | A kind of dust pelletizing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208472005U true CN208472005U (en) | 2019-02-05 |
Family
ID=65204336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721880001.5U Expired - Fee Related CN208472005U (en) | 2017-12-28 | 2017-12-28 | A kind of dust pelletizing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208472005U (en) |
-
2017
- 2017-12-28 CN CN201721880001.5U patent/CN208472005U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190205 Termination date: 20191228 |
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| CF01 | Termination of patent right due to non-payment of annual fee |