CN207760372U - Blast furnace gas dust pelletizing system - Google Patents
Blast furnace gas dust pelletizing system Download PDFInfo
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- CN207760372U CN207760372U CN201721838887.7U CN201721838887U CN207760372U CN 207760372 U CN207760372 U CN 207760372U CN 201721838887 U CN201721838887 U CN 201721838887U CN 207760372 U CN207760372 U CN 207760372U
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- gas
- purified gas
- cylinder
- blast furnace
- pelletizing system
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Abstract
The utility model provides a kind of blast furnace gas dust pelletizing system, including：Cylinder, it is closed at both ends and there is inner cavity, half purified gas entrance pipe and purified gas export pipeline are equipped at the top of cylinder, half purified gas entrance pipe axis and purified gas export pipeline axis are parallel with tubular axis；Telescopic cyclone dust collectors, it is located at the top of cylinder, telescopic cyclone dust collectors include first sleeve, the second casing and the connecting tube that diameter is sequentially reduced and is coaxially arranged, first inner chamber is formed between first sleeve and the second casing, second inner chamber is formed between second casing and connecting tube, gas introduction port is offered on the tube wall of first sleeve, gas introduction port is connected to first inner chamber, the lower end of first inner chamber is connected to the lower end of second inner chamber, the upper end of connecting tube is connected to second inner chamber upper end, and the lower end of connecting tube is connect with the upper end of half purified gas entrance pipe；Dust removal assembly is installed in cylinder, and the lower end of half purified gas entrance pipe is placed in across dust removal assembly below dust removal assembly.
Description
Technical field
The utility model is related to blast furnace dedusting system, specifically a kind of blast furnace gas dust pelletizing system.
Background technology
National blast furnace gas bag-type dust removing system Engineering Market is mainly by radius coal gas side into clean coal gas side goes out (small furnace
Gas cleaning system) or ejection system (big blast furnace coal gas purification system) based on.Through gravitational precipitator or cyclone dust collectors
Half purified gas after rough dedusting enters duster system from the side-lower of bag filter, is filtered by outside filtering type composite fibre
Half purified gas of bag completes secondary refined dedusting and purified gas dustiness is made to reach downstream blast furnace coal gas waste pressure turbine power generator (TRT)
Top pressure recovery turbine 10mg/Nm3Working condition requirement.
Go out from side into side with side into ejection blast furnace gas bag-type dust removing system previous operation case study as a result, operating charges
It is the chief component that blast furnace gas bag-type dust removing system builds up rear running cost with the aging breakage of middle filter bag replacement, reduces
Breakage rate improves the developing direction that service life is blast furnace gas bag-type dust removing system.Collect in addition, combining with more steels
Dynamics factory of group introduces the TRT electricity generation systems for dustiness sensitivity, further decreases TRT entrances (blast furnace gas cloth bag dedusting system
System outlet) dustiness, the loss of bag-type dust removal system pressure potential is reduced, it is to carry to improve bag-type dust removal system outlet clean coal pneumatic energy
High blast furnace gas bag-type dust removing system efficiency of operation, reduces the key factor of running cost.
Two ways common in the art is as follows：
Side goes out formula into side：Bag-type dust removal system as the secondary refined dedusting of blast furnace gas is often highly well below blast furnace coal
Gas once slightly goes out the gravitational dust collection system or cyclone system of dirt, and blast furnace gas radius cleaning shaft is from higher position
(35.00m or so) is reduced to that bag-type dust removal system middle and lower part (10.5m or so) pipeline height difference is larger, and duct length is longer, pipeline
Construction cost is high, and in addition swiftly flowing half purified gas pipe-line system airflow line drag losses are larger.In addition, half purified gas into
Enter due to inlet air flow after dust pelletizing system, inner barrel air-flow and exit flow are 90 ° of relativeness two-by-two, are local resistance
A kind of maximum geometric configuration is lost, internal filter bag is susceptible to lodging under the effect of this air motion, and bending is damaged, from
And the actual filtration area of filter bag is reduced, cause local resistance loss further to increase.The shortcomings that technology：From construction investment
The common side of small furnace goes out formula blast furnace coal gas purification system into side at present, and pipe-line construction expense is larger.It is said from operation angle, filter bag
It is easy occur breakage in operation, filter effect is also relatively minimum, and since breakage may cause the blade of follow-up TRT systems
Loss.
Side is into ejecting type：In large blast furnace, dry-method bag-type dust collecting also has another arrangement form --- and side is into ejecting type
Blast furnace gas bag-type dust removing system.From half purified gas of blast furnace of a rough dedusting system outlet from bag-type dust removal system middle and lower part into
Enter system, half purified gas leaves system through sock filtration from dust remover roof.The shortcomings that prior art：Side into ejecting type compared with side into
Side goes out 90 ° of air motion relationships that formula eliminates purified gas and duster system internal gas flow, to which part reduces local resistance
Power is lost.But the form of the entrance due to duster system, it still can not solve filter bag lodging phenomenon and deduster air-flow
Entrance local losses.
Utility model content
The utility model provides a kind of blast furnace gas dust pelletizing system, reduces purified gas dustiness to reach, reduces
The purpose of filter bag damage.
Technical solution adopted by the utility model to solve its technical problems is：A kind of blast furnace gas dust pelletizing system,
Including：Cylinder, it is closed at both ends and there is inner cavity, half purified gas entrance pipe and purified gas outlet are provided at the top of cylinder
Road, the axis of half purified gas entrance pipe and the axis of purified gas export pipeline are parallel with tubular axis；Telescopic whirlwind removes
Dirt device is arranged at the top of cylinder, telescopic cyclone dust collectors include diameter be sequentially reduced and be coaxially arranged first sleeve,
Two casings and connecting tube form first inner chamber between first sleeve and the second casing, is formed between the second casing and connecting tube
Two inner cavities offer gas introduction port on the tube wall of first sleeve, and gas introduction port is connected to first inner chamber, under first inner chamber
End is connected to the lower end of second inner chamber, and the upper end of connecting tube is connected to second inner chamber upper end, the lower end of connecting tube and half purified gas
The upper end of entrance pipe connects；Dust removal assembly is fixed in cylinder, and the lower end of half purified gas entrance pipe passes through dedusting group
Part is placed in below dust removal assembly.
Further, half purified gas entrance pipe is helix tube.
Further, dust removal assembly includes lattice board and outside filtering type composite fibre filter bag, and lattice board is along cylinder radial arrangement
And the inner cavity of cylinder is divided into clean coal gas chamber and half clean coal gas chamber, clean coal gas chamber is located above lattice board, and half clean coal gas chamber is located at
The lower section of lattice board, outside filtering type composite fibre filter bag, which is fixed on lattice board, to be placed in half clean coal gas chamber.
Further, the lower end of purified gas export pipeline is connected to clean coal gas chamber.
Further, blast furnace gas dust pelletizing system further includes pulsed nitrogen injector, is fixed on cylinder body outer wall simultaneously
It is connected to outside filtering type composite fibre filter bag.
Further, the lower part of cylinder has conical section, and vertically downwards, the diameter of conical section is gradually reduced.
Further, multiple vibrators are arranged at intervals on the outer wall of conical section.
Further, the lower end of conical section is provided with ash discharge valve group.
Further, gas introduction port is connected with half purified gas supervisor, and gas valve group is provided on half purified gas supervisor.
Further, purified gas export pipeline is connected with purified gas supervisor, and gas valve group is provided on purified gas supervisor.
The utility model has the beneficial effects that the axis and purified gas of half purified gas entrance pipe is arranged at the top of cylinder
Export pipeline (in the present embodiment, the axis of half purified gas entrance pipe is overlapped with the axis of cylinder) can make to enter and export
The gas flow of cylinder is parallel with outside filtering type composite fibre filter bag so that air flow method is more uniformly distributed, and avoids the compound fibre of outside filtering type
The problem of dimension filter bag lodges, can effectively improve the service life of outside filtering type composite fibre filter bag, and fortune is reduced to reach
Seek the purpose of cost.And the set-up mode of jacking ejection is because reduce local resistance loss, to reduce the utility model
The pressure potential of embodiment loses so that the TRT system generated energy of downstream recovery pressure potential is further promoted.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality
Novel illustrative embodiments and their description are not constituted improper limits to the present invention for explaining the utility model.
In the accompanying drawings：
Fig. 1 is the utility model embodiment front view schematic diagram；
Fig. 2 is the utility model embodiment side view schematic diagram；
Fig. 3 is the portions A enlarged drawing in Fig. 2.
Reference numeral in figure：10, cylinder；11, half purified gas entrance pipe；12, purified gas export pipeline；20, telescopic
Cyclone dust collectors；21, first sleeve；22, the second casing；23, connecting tube；211, first inner chamber；221, second inner chamber；31, flower
Panel；32, outside filtering type composite fibre filter bag；41, vibrator；50, pulsed nitrogen injector；61, half purified gas is responsible for；71, net
Coal gas is responsible for.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1 to Figure 3, the utility model embodiment provides a kind of blast furnace gas dust pelletizing system, including cylinder
Body 10, telescopic cyclone dust collectors 20 and dust removal assembly.Cylinder 10 closed at both ends and there is inner cavity, the top of cylinder 10 is arranged
There are half purified gas entrance pipe 11 and purified gas export pipeline 12, the axis and purified gas outlet of half purified gas entrance pipe 11
The axis on road 12 is parallel with 10 axis of cylinder.Telescopic cyclone dust collectors 20 are arranged in the top of cylinder 10, telescopic whirlwind
Deduster 20 includes first sleeve 21, the second casing 22 and the connecting tube 23 that diameter is sequentially reduced and is coaxially arranged, first sleeve
21 and second form first inner chamber 211 between casing 22, and second inner chamber 221 is formed between the second casing 22 and connecting tube 23, the
Tangentially-arranged gas introduction port is offered on the tube wall of sleeve 21, gas introduction port is connected to first inner chamber 211, in first
The lower end of chamber 211 is connected to the lower end of second inner chamber 221, and the upper end of connecting tube 23 is connected to 221 upper end of second inner chamber, connecting tube
23 lower end is connect with the upper end of half purified gas entrance pipe 11.Dust removal assembly is fixed in cylinder 10, and half purified gas enters
The lower end of mouth pipeline 11 is placed in across dust removal assembly below dust removal assembly.
Specifically, dust removal assembly includes lattice board 31 and outside filtering type composite fibre filter bag 32, and lattice board 31 is along 10 diameter of cylinder
To arranging and the inner cavity of cylinder 10 being divided into clean coal gas chamber and half clean coal gas chamber, clean coal gas chamber is located at 31 vertical direction of lattice board
The lower end of top, purified gas export pipeline 12 is connected to clean coal gas chamber.Half clean coal gas chamber is located under 31 vertical direction of lattice board
Side, outside filtering type composite fibre filter bag 32, which is fixed on lattice board 31, to be placed in half clean coal gas chamber, and outside filtering type composite fibre is filtered
The setting direction (i.e. outside filtering type composite fibre filter bag 32 is vertically arranged) of bag 32 is parallel with the axis of cylinder 10.This practicality
Outside filtering type composite fibre filter bag 32 is multiple in new embodiment, uniformly at intervals in half clean coal gas chamber.
At the top of cylinder 10,12 (the present embodiment of axis and purified gas export pipeline of half purified gas entrance pipe 11 is set
In, the axis of half purified gas entrance pipe 11 is overlapped with the axis of cylinder 10), it can make to enter the gas stream with export cylinder 10
To parallel with outside filtering type composite fibre filter bag 32 so that air flow method is more uniformly distributed, and outside filtering type composite fibre filter bag 32 is avoided to send out
The problem of raw lodging, the service life of outside filtering type composite fibre filter bag 32 can be effectively improved, is cut operating costs to reach
Purpose.And the set-up mode of jacking ejection is because reduce local resistance loss, to reduce the utility model embodiment
Pressure potential loss so that the TRT system generated energy of downstream recovery pressure potential is further promoted.
Meanwhile by being provided with telescopic cyclone dust collectors 20 in half purified gas entrance pipe, 11 upper end, due to increasing by half
The move distance of purified gas, can effectively promote the dust removing effects of half purified gas, while can also change conventional cyclone dust collectors
Fixation air-out mode that side goes out into side (telescopic cyclone dust collectors 20 be side into go out under vertical), can rationally be adapted to this practicality newly
10 structure of cylinder that jacking ejects in type embodiment.
Preferably, half purified gas entrance pipe 11 is helix tube.Half clean coal is enabled to by the guide functions of helix tube
Gas generates before entering deduster and being contacted with outside filtering type composite fibre filter bag 32 along the downward compound motion of centrifugal spiral so that
Process between half purified gas entrance pipe 11 and outside filtering type composite fibre filter bag 32 carries cyclone dust removal function, improves
Efficiency is filtered, outside filtering type composite fibre filter bag 32 is reduced and filters load, improve the service life of outside filtering type composite fibre filter bag 32.
Gas introduction port is connected with half purified gas supervisor 61, and purified gas export pipeline 12 is connected with purified gas supervisor 71.This
10 outer fix of cylinder is being biased in the setting of purified gas export pipeline 12 in utility model embodiment, so that half purified gas is responsible for
61 height is higher than purified gas supervisor 71.To reduce gravitational precipitator on the whole to the total pipeline of the utility model embodiment
Build dosage, due to purified gas supervisor 71 height reduce and meanwhile decrease the utility model to TRT systems clean coal feed channel
Build dosage.
The set-up mode ejected using jacking can effectively reduce the whole height of equipment, save space and reduce construction
Expense.
It is provided with gas valve group on half purified gas supervisor 61.It is provided with gas valve group on purified gas supervisor 71.It is above-mentioned
Gas valve group is the prior art, therefore no longer repeats its structure.
Blast furnace gas dust pelletizing system further includes pulsed nitrogen injector 50, be fixed on 10 outer wall of cylinder and with outer filter
Formula composite fibre filter bag 32 is connected to.The pulsed nitrogen injector 50 can blow nitrogen to outside filtering type composite fibre filter bag 32, and
For removing the dust outside outside filtering type composite fibre filter bag 32, dust is made to fall into bottom and the discharge of cylinder 10.
Preferably, the lower part of cylinder 10 has conical section, and vertically downwards, the diameter of conical section is gradually reduced.On
It states and is arranged at intervals with multiple vibrators 41 on the outer wall of conical section.It can be that dust is fallen by gravity that conical section, which is arranged, together
When multiple vibrators 41 are set, be capable of the dust stratification of more efficiency to shake in doffing body 10.
The lower end of conical section is provided with ash discharge valve group.Above-mentioned ash discharge valve group is the prior art, therefore not to its structure
It is repeated again.
When being worked using the utility model embodiment：
Blast furnace raw gas becomes half only from furnace roof by once slightly going out dirt (gravitational dust collection system or cyclone system)
Coal gas.
Half purified gas is assigned to progress secondary fine in the present embodiment by the branch pipe being distributed on half purified gas supervisor and removes
Dirt, through outside filtering type composite fibre filter bag 32, the blast furnace ash in half purified gas is attracted to 32 outside of outside filtering type composite fibre filter bag.
And the purified gas after secondary refined dedusting is upwardly into clean coal gas chamber along outside filtering type composite fibre filter bag 32, is then passed through clean coal
Clean coal gas branch pipe is flowed into after gas export pipeline 12, finally enters purified gas supervisor 71 and imported into downstream TRT electricity generation systems.
Be attached to the outside of outside filtering type composite fibre filter bag 32 blast furnace ash run up to setting thickness after testing after, trigger pulse
The switch of nitrogen gas jet 50, one pulsed nitrogen are blown into 32 inside of outside filtering type composite fibre filter bag, and generating moment vibrations will
32 outside blast furnace ash of outside filtering type composite fibre filter bag, which shakes off, falls into the grey ash bucket (not shown) of 10 lower part of cylinder storage.
After blast furnace ash in the grey ash bucket of storage runs up to setting height, ash discharge valve group switch opening can be triggered and carry out unloading ash.
Pneumatic ash transmitting system opening (not shown) carries out defeated ash simultaneously, and the blast furnace ash in ash bucket is transported in conference storehouse.
After the blast furnace ash in big ash cellar runs up to setting height, triggers grey position and remind, outworker is reminded to use
The grey truck of dress transports blast furnace ash.
It can be seen from the above description that the above embodiments of the present invention achieve the following technical effects：In cylinder
The top of body 10 be arranged half purified gas entrance pipe 11 axis and purified gas export pipeline 12 (in the present embodiment, half purified gas
The axis of entrance pipe 11 is overlapped with the axis of cylinder 10), it can make to enter and the gas flow of export cylinder 10 and outside filtering type
Composite fibre filter bag 32 is parallel so that air flow method is more uniformly distributed, and avoids what outside filtering type composite fibre filter bag 32 lodged from asking
Topic, can effectively improve the service life of outside filtering type composite fibre filter bag 32, to achieve the purpose that cut operating costs.And
The set-up mode of jacking ejection is because reduce local resistance loss, to reduce the pressure potential energy loss of the utility model embodiment
It loses so that the TRT system generated energy of downstream recovery pressure potential is further promoted.
Meanwhile by being provided with telescopic cyclone dust collectors 20 in half purified gas entrance pipe, 11 upper end, due to increasing by half
The move distance of purified gas, can effectively promote the dust removing effects of half purified gas, while can also change conventional cyclone dust collectors
Fixation air-out mode that side goes out into side (telescopic cyclone dust collectors 20 be side into go out under vertical), can rationally be adapted to this practicality newly
10 structure of cylinder that jacking ejects in type embodiment.
The above, only specific embodiment of the utility model cannot limit the range that utility model is implemented, institute with it
With the displacement of its equivalent assemblies, or according to equivalent variations made by the utility model patent protection domain and modification, should all still fall within
The scope that this patent is covered.In addition, between technical characteristic and technical characteristic in the utility model, technical characteristic and technical solution
Between, between technical solution and technical solution use can be freely combined.
Claims (10)
1. a kind of blast furnace gas dust pelletizing system, which is characterized in that including：
Cylinder (10), it is closed at both ends and there is inner cavity, half purified gas entrance pipe (11) and only is provided at the top of cylinder (10)
Gas exit pipeline (12), the axis of half purified gas entrance pipe (11) and the axis of purified gas export pipeline (12) are and cylinder
(10) axis is parallel；
Telescopic cyclone dust collectors (20) are arranged at the top of cylinder (10), telescopic cyclone dust collectors (20) include diameter according to
Secondary reduction and the first sleeve (21), the second casing (22) and the connecting tube (23) that are coaxially arranged, first sleeve (21) and second set
First inner chamber (211) is formed between pipe (22), and second inner chamber (221) is formed between the second casing (22) and connecting tube (23), the
Tangentially-arranged gas introduction port is offered on the tube wall of sleeve (21), the gas introduction port connects with first inner chamber (211)
Logical, the lower end of first inner chamber (211) is connected to the lower end of second inner chamber (221), the upper end of connecting tube (23) and second inner chamber
(221) upper end is connected to, and the lower end of connecting tube (23) is connect with the upper end of half purified gas entrance pipe (11)；
Dust removal assembly is fixed in cylinder (10), and the lower end of half purified gas entrance pipe (11) passes through the dust removal assembly
It is placed in below the dust removal assembly, the lower end of purified gas export pipeline (12) is located at the top of the dust removal assembly.
2. blast furnace gas dust pelletizing system according to claim 1, which is characterized in that half purified gas entrance pipe (11)
For helix tube.
3. blast furnace gas dust pelletizing system according to claim 1, which is characterized in that the dust removal assembly includes lattice
Plate (31) and outside filtering type composite fibre filter bag (32), lattice board (31) is along cylinder (10) radial arrangement and by the inner cavity of cylinder (10)
It is divided into clean coal gas chamber and half clean coal gas chamber, the clean coal gas chamber is located at the top of lattice board (31) vertical direction, half clean coal
Gas chamber is located at the lower section of lattice board (31) vertical direction, and outside filtering type composite fibre filter bag (32) is fixed on juxtaposition on lattice board (31)
In the half clean coal gas chamber, the setting direction of outside filtering type composite fibre filter bag (32) is parallel with the axis of cylinder 10.
4. blast furnace gas dust pelletizing system according to claim 3, which is characterized in that purified gas export pipeline (12)
Lower end is connected to the clean coal gas chamber.
5. blast furnace gas dust pelletizing system according to claim 3, which is characterized in that blast furnace gas dust pelletizing system
Further include pulsed nitrogen injector (50), is fixed on cylinder (10) outer wall and is connected to outside filtering type composite fibre filter bag (32).
6. blast furnace gas dust pelletizing system according to claim 1, which is characterized in that the lower part of cylinder (10) has cone
Shape section, vertically downwards, the diameter of the conical section are gradually reduced.
7. blast furnace gas dust pelletizing system according to claim 6, which is characterized in that between on the outer wall of the conical section
Every being provided with multiple vibrators (41).
8. blast furnace gas dust pelletizing system according to claim 6, which is characterized in that the lower end of the conical section is arranged
There is ash discharge valve group.
9. blast furnace gas dust pelletizing system according to claim 1, which is characterized in that the gas introduction port is connected with
Half purified gas is responsible for (61), and gas valve group is provided on half purified gas supervisor (61).
10. blast furnace gas dust pelletizing system according to claim 1, which is characterized in that the purified gas export pipeline
(12) it is connected with purified gas supervisor (71), gas valve group is provided on purified gas supervisor (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721838887.7U CN207760372U (en) | 2017-12-25 | 2017-12-25 | Blast furnace gas dust pelletizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721838887.7U CN207760372U (en) | 2017-12-25 | 2017-12-25 | Blast furnace gas dust pelletizing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207760372U true CN207760372U (en) | 2018-08-24 |
Family
ID=63184553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721838887.7U Active CN207760372U (en) | 2017-12-25 | 2017-12-25 | Blast furnace gas dust pelletizing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207760372U (en) |
-
2017
- 2017-12-25 CN CN201721838887.7U patent/CN207760372U/en active Active
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