CN205893298U - Blast furnace coal injection system - Google Patents
Blast furnace coal injection system Download PDFInfo
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- CN205893298U CN205893298U CN201620848891.0U CN201620848891U CN205893298U CN 205893298 U CN205893298 U CN 205893298U CN 201620848891 U CN201620848891 U CN 201620848891U CN 205893298 U CN205893298 U CN 205893298U
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- coal
- coal dust
- injection system
- buggy
- breeze blowing
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Abstract
The utility model discloses a blast furnace coal injection system, the system includes that first buggy jetting jar, first buggy are responsible for, jar, the second buggy person in charge, pulverized coal distributor, buggy branch pipe, spray gun are jetted to the second buggy, first buggy be responsible for with the second buggy is responsible for parallelly connectedly, first buggy jetting jar passes through first buggy be responsible for with pulverized coal distributor connects, second buggy jetting jar passes through the second buggy be responsible for with pulverized coal distributor connects, pulverized coal distributor passes through the buggy branch pipe with the spray gun is connected, buggy branch pipe return bend department is equipped with first three -way valve and second three -way valve. The system has improved the all rates of spouting and the production efficiency of blast furnace coal injection buggy, has practiced thrift the energy.
Description
Technical field
The present invention relates to blast furnace ironmaking field is and in particular to a kind of bf coal injection system.
Background technology
Iron-smelting process system is broadly divided into blast furnace ironmaking and two kinds of non-blast furnace ironmaking, because blast furnace ironmaking economic indicator is good
Good, process is simple, output is big, and labor productivity is high, and energy consumption is low, and blast furnace ironmaking is that the iron producing still accounts for world steel total output
More than 95%.Wherein, bf coal injection system is the visual plant in blast furnace ironmaking, is also the three big of China steel industry development
One of important technology route.
Bf coal injection system be in blast-furnace tuyere is to stove directly the levigate anchracite duff of injection or bituminous coal powder or this two
The mixed coal powder of person, being played with substitute for coke provides the effect of heat and reducing agent, thus reducing coke ratio, reducing pig iron cost, being
The important technical revolution that modern blast furnace is smelted.Meanwhile, develop to Condensed transportation direction with coal powder injection technology, stable, uniform
Breeze blowing be to maintain that furnace temperature is stable, ensure furnace condition anterograde so that blast furnace reaches the optimal important foundation smelting state.
At present, in the production process of blast furnace ironmaking, bf coal injection system is connected with Pulverized Coal Bin, injection tank, distribution in turn
Device, coal jetting branch and coal powder lance, coal dust enters in injection tank from Pulverized Coal Bin and is blown into after distributor through coal jetting branch by coal powder injection
Rifle is in the cupola well that blast-furnace tuyere sprays into blast furnace.When coal powder injection tank fault, coal or discontinuity coal powder injection can only be stopped, cause blast furnace
The working of a furnace fluctuates, the negative consequence such as checking operation or raising coke ratio.On the other hand, due to the distance between coal powder lance and distributor
Long, the caliber of coal jetting branch is little, bend pipe is many, there is a problem of that coal jetting branch blocks, if blocking can not unimpeded in time, easily burn spray
Rifle, impact all sprays effect, destroys the working of a furnace.After coal jetting branch blocking, adopting pneumatics to recoil prior art and suitable punching more, time length,
Difficulty is big.And after coal jetting branch bent part from blocking, pneumatics recoil and suitable punching are difficult to dredging, can only be dredged by open pipe, open pipe unimpeded
Complex operation, time-consuming.Meanwhile, build the pressure because in pipeline, during open pipe, coal dust sprays and hurts sb.'s feelings, and there is potential safety hazard.
Utility model content
In view of this, the utility model provides a kind of bf coal injection system, improves all sprays rate and the life of pulverized coal injection coal dust
Produce efficiency.
In order to achieve the above object, the following technical scheme of the application offer:
A kind of bf coal injection system, described system includes the first breeze blowing tank, the first coal dust supervisor, the second breeze blowing
Tank, the second coal dust supervisor, pulverized coal distributor, coal dust arm, spray gun；Described first coal dust supervisor is responsible for simultaneously with described second coal dust
Connection；Described first breeze blowing tank is passed through described first coal dust supervisor and is connected with described pulverized coal distributor, described second pulverized coal injection
Blow tank to be connected with described pulverized coal distributor by described second coal dust supervisor；Described pulverized coal distributor pass through described coal dust arm with
Described spray gun connects；Described coal dust arm pipe bent position is provided with the first triple valve and the second triple valve.
Preferably, described first triple valve is provided with the first bypass line by described coal dust arm, by the of described first
Siphunculus road is provided with the 3rd triple valve；It is provided with the second bypass line at described second triple valve, described second bypass line sets
There is the 4th triple valve.
Preferably, described first triple valve, described second triple valve, described 3rd triple valve are equal with described 4th triple valve
It is provided with scavenging pipeline.
Preferably, described coal dust arm is sequentially provided with coal feeding valve, check-valves and coal injection ball valve.
Preferably, described system also includes Pulverized Coal Bin, described Pulverized Coal Bin respectively with described first breeze blowing tank, described
Two breeze blowing tanks connect.
Preferably, described Pulverized Coal Bin bottom respectively with described first breeze blowing tank top, described second breeze blowing tank
Top connects.
Preferably, the first coal dust supervisor is upper, the second coal dust supervisor is upper between described Pulverized Coal Bin and the first breeze blowing tank, institute
State and be provided with, between Pulverized Coal Bin and the second breeze blowing tank, the valve that produces coal.
Preferably, described first breeze blowing tank has the first constant feeder, and described second breeze blowing tank is divided into
There is the second constant feeder.
Preferably, described system also includes flue gas conveying device, and described supplied flue gases conveying device is by filter, pressurization
Device, air accumulator are sequentially connected in series.
Preferably, described pressue device includes the first pressurizer and the second pressurizer, described first pressurizer and described the
Two pressurizers are in parallel.
Preferably, described air accumulator is provided with outlet conduit；Described outlet conduit respectively pass through the first voltage stabilizing pipeline with described
First breeze blowing tank connects, and is connected with the first coal dust constant feeder by the first injection pipeline, by the first tonifying Qi pipeline
Be connected with the first air compensation device, be connected with described second breeze blowing tank by the second voltage stabilizing pipeline, by second injection pipeline with
Second coal dust constant feeder connects, and is connected with the second air compensation device by the second tonifying Qi pipeline.
Preferably, described first air compensation device is arranged on the first coal dust supervisor, and described second air compensation device is arranged at the second coal
On powder supervisor.
Preferably, described first voltage stabilizing pipeline, the second voltage stabilizing pipeline are provided with controlling valve of voltage regulation, voltage stabilizing flowmeter and steady
Pressure valve.
Preferably, described first injection pipeline, the second injection pipeline are provided with injection regulating valve, injection flowmeter and spray
Blow valve.
Preferably, described first tonifying Qi pipeline, the second tonifying Qi pipeline are provided with tonifying Qi regulating valve, flow of air supply meter and benefit
Air valve.
The working method of technical scheme bf coal injection system is:
Pulverized Coal Bin provided by the present invention is used for storage needs the coal dust of injection, and by pipeline to the first breeze blowing tank
1 and/or the second breeze blowing tank 3 pulverized coal conveying.
Flue gas conveying device provided by the present invention is used for providing pressurization flue gas: outside smoke conveying duct is used for filtration
Flue gas is inputted in device；Filter is used for the flue gas of input being filtered, to remove the impurity component in flue gas；Pressue device is used
In the jetting pressure required for injection will be forced into through the flue gas filtering, including the first pressurizer 31 and the second pressurizer 32,
Alternately work；Air accumulator is used for the flue gas through pressurization for the storage, and in breeze blowing tank, constant feeder, air compensation device
Pressurization flue gas is provided.
Air compensation device provided by the present invention is used for carrying out ftercompction to the mixture of the coal dust in pipeline and pressurization flue gas.
Breeze blowing tank provided by the present invention is used for mixing coal dust with pressurization flue gas, and by pipeline to coal powder distribation
Device pulverized coal conveying and the mixture of pressurization flue gas；First breeze blowing tank 1, the second breeze blowing tank 3, alternately work are set
Make.Wherein, the process that described second breeze blowing tank work is switched to the first breeze blowing tank work is: described second pulverized coal injection
When blowing tank and being in injection state, open the corresponding valve that produces coal of the first breeze blowing tank, controlling valve of voltage regulation, pressure maintaining valve, injection are adjusted
Valve, blowing valve, tonifying Qi regulating valve, aeration valve, control voltage stabilizing flowmeter, injection flowmeter, flow of air supply meter constant, the first quantitation
Batcher drives and sets speed-raising rotation, and the second constant feeder is rotated in deceleration by phase uniform acceleration simultaneously；First dosing
When machine and the second constant feeder rotating speed are equal, close the second constant feeder, close the correspondence of the second breeze blowing tank successively
The valve that produces coal, controlling valve of voltage regulation, pressure maintaining valve, injection regulating valve, blowing valve, tonifying Qi regulating valve, aeration valve；According to set value calculation
Voltage stabilizing flowmeter, injection flowmeter, flow of air supply meter.
Pulverized coal distributor provided by the present invention is used for providing the mixture of coal dust and pressurization flue gas to spray gun；
Coal dust arm provided by the present invention holds susceptible to plugging pipe bent position and is provided with triple valve, when coal dust props up blockage,
The valve element of corresponding triple valve is gone to scavenging pipeline, certain cleaning gas is filled with to moment in coal dust arm by scavenging pipeline
Quickly the coal dust of blocking can be dispelled after body；Described coal dust arm holds susceptible to plugging pipe bent position and is additionally provided with bypass line, when
During coal dust arm elbow blockage, coal powder injection can be carried out from by-pass line；When bypass line blocks, by the valve of corresponding triple valve
Core goes to scavenging pipeline, can quickly will block up after scavenging pipeline is filled with certain cleaning gas to moment in bypass line
The coal dust of plug dispels；Coal dust arm is provided with the opening and closing that coal feeding valve can control described coal jetting branch, is provided with check-valves and ensures coal dust
Flow direction is correct, and setting coal injection ball valve controls pulverized coal flow.
Spray gun provided by the present invention is used for mouth to the mixture of coal injection in burner hearth and pressurization flue gas.
Compared with prior art, the bf coal injection system that the utility model provides, improves all sprays rate and the production of coal dust
Efficiency, has saved the energy: coal dust arm pipe bent position is provided with triple valve and bypass line, during coal jetting branch blocking, can be timely, convenient
Ground unimpeded, has ensured all spray and production safety；By the way of the parallel connection of breeze blowing tank, realize breeze blowing tank alternation,
When one of breeze blowing tank can not normally use, can all spray offer condition for pulverized coal injection；Dress will be conveyed using flue gas
Put, with flue gas pulverized coal conveying, effectively utilize heat energy more than needed, save coke；Using constant feeder, flue gas and coal dust is made to divide
Open control, improve injection precision.
Brief description
In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work
Under, other accompanying drawings can also be obtained with reference to the accompanying drawings.
The bf coal injection system structural representation that Fig. 1 provides for the utility model.
Specific embodiment
In order that those skilled in the art more fully understands technical scheme, below in conjunction with the accompanying drawings and specifically real
The present invention is described in further detail to apply example.
As shown in figure 1, the utility model provides a kind of bf coal injection system, described system includes the first breeze blowing tank
1st, the first coal dust is responsible for the 2, second breeze blowing tank 3, the second coal dust supervisor 4, pulverized coal distributor 5, coal dust arm 6, spray gun 7；Institute
State the first coal dust supervisor 2 in parallel with described second coal dust supervisor 4；Described first breeze blowing tank 1 passes through described first coal dust master
Pipe 2 is connected with described pulverized coal distributor 5, and described second breeze blowing tank 3 is divided with described coal dust by described second coal dust supervisor 4
Orchestration 5 connects；Described pulverized coal distributor 5 is connected with described spray gun 7 by described coal dust arm 6；Described coal dust arm 6 pipe bent position
It is provided with the first triple valve 9 and the second triple valve 10.
In the utility model one specific embodiment, at described first triple valve 9, it is provided with the first bypass line 12, described
First bypass line 12 is provided with the 3rd triple valve 13；It is provided with described second triple valve 10 and be provided with the second bypass line 14,
Described second bypass line 14 is provided with the 4th triple valve 15；Described first triple valve 9, described second triple valve 10, described
Three triple valves 13 are equipped with scavenging pipeline 16 with described 4th triple valve 15；Described coal dust arm 6 is sequentially provided with coal feeding valve 17, stops
Return valve 18 and coal injection ball valve 19；Described coal dust arm and spray gun junction are provided with control valve 11.
In the utility model one specific embodiment, described system also includes Pulverized Coal Bin 8, and described Pulverized Coal Bin 8 bottom is respectively
Be connected with described first breeze blowing tank 1 top, described second breeze blowing tank 3 top it is preferred that first coal dust supervisor 2 on,
On second coal dust supervisor 4, between described Pulverized Coal Bin 8 and the first breeze blowing tank 1, described Pulverized Coal Bin 8 and the second breeze blowing tank 3
Between be provided with the valve 22 that produces coal, described first breeze blowing tank 1 has the first constant feeder 25, described second pulverized coal injection
Blow tank 3 and have the second constant feeder 26.
In the utility model one specific embodiment, described system also includes flue gas conveying device 27, described supplied flue gases
Conveying device is sequentially connected in series by filter 28, pressue device 29, air accumulator 30；Described pressue device 29 includes first and adds
Depressor 31 and the second pressurizer 32, described first pressurizer 31 is in parallel with described second pressurizer 32；Described air accumulator 30 is provided with
Outlet conduit 33；Described outlet conduit 33 is connected with described first breeze blowing tank 1, by first by the first voltage stabilizing pipeline 34
Injection pipeline 35 is connected with the first coal dust constant feeder 25, is connected with the first air compensation device 37 by the first tonifying Qi pipeline 36, leads to
Cross the second voltage stabilizing pipeline 38 to be connected with described second breeze blowing tank 3, quantitatively given with the second coal dust by the second injection pipeline 39
Material machine 26 connects, and is connected with the second air compensation device 41 by the second tonifying Qi pipeline 40, and described first air compensation device 37 is arranged at the first coal
On powder supervisor 2, described second air compensation device 41 is arranged on the second coal dust supervisor 4；Described first voltage stabilizing pipeline 34, the second voltage-stabiliser tube
Road 38 is provided with controlling valve of voltage regulation 42, voltage stabilizing flowmeter 43 and pressure maintaining valve 44, described first injection pipeline 35, the second injection tube
Road 39 is provided with injection regulating valve 45, injection flowmeter 46 and blowing valve 47, described first tonifying Qi pipeline 36, the second blowdown pipe
Road 40 is provided with tonifying Qi regulating valve 48, flow of air supply meter 49 and aeration valve 50.
In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or new using this practicality
Type.Multiple modifications to these embodiments will be apparent from for those skilled in the art, is determined herein
The General Principle of justice can be realized in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The wide scope consistent with features of novelty.
Claims (10)
1. a kind of bf coal injection system it is characterised in that described system include the first breeze blowing tank, the first coal dust supervisor, the
Two breeze blowing tanks, the second coal dust supervisor, pulverized coal distributor, coal dust arm, spray gun；Described first coal dust supervisor and described second
Coal dust supervisor is in parallel；Described first breeze blowing tank is passed through described first coal dust supervisor and is connected with described pulverized coal distributor, described
Second breeze blowing tank is passed through described second coal dust supervisor and is connected with described pulverized coal distributor；Described pulverized coal distributor passes through described
Coal dust arm is connected with described spray gun；Described coal dust arm pipe bent position is provided with the first triple valve and the second triple valve.
2. bf coal injection system according to claim 1 is it is characterised in that be provided with by the of first at described first triple valve
Siphunculus road, described first bypass line is provided with the 3rd triple valve；Second bypass line at described second triple valve, described second
Bypass line is provided with the 4th triple valve.
3. bf coal injection system according to claim 2 is it is characterised in that described first triple valve, described second threeway
Valve, described 3rd triple valve and described 4th triple valve are equipped with scavenging pipeline.
4. bf coal injection system according to claim 1 it is characterised in that described coal dust arm be sequentially provided with coal feeding valve,
Check-valves and coal injection ball valve.
5. bf coal injection system according to claim 1 is it is characterised in that described system also includes Pulverized Coal Bin, described coal
Powder cabin is connected with described first breeze blowing tank, described second breeze blowing tank respectively.
6. bf coal injection system according to claim 1 is it is characterised in that described first breeze blowing tank has first
Constant feeder, described second breeze blowing tank has the second constant feeder.
7. bf coal injection system according to claim 1 is it is characterised in that described system also includes flue gas conveying device,
Described supplied flue gases conveying device is sequentially connected in series by filter, pressue device, air accumulator.
8. bf coal injection system according to claim 7 it is characterised in that described pressue device include the first pressurizer and
Second pressurizer, described first pressurizer is in parallel with described second pressurizer.
9. bf coal injection system according to claim 7 is it is characterised in that described air accumulator is provided with outlet conduit；Described
Outlet conduit is connected with described first breeze blowing tank by the first voltage stabilizing pipeline respectively, by the first injection pipeline and the first coal
Powder constant feeder connects, and is connected with the first air compensation device by the first tonifying Qi pipeline, by the second voltage stabilizing pipeline and described second
Breeze blowing tank connects, and is connected with the second coal dust constant feeder by the second injection pipeline, by the second tonifying Qi pipeline and the
Two air compensation devices connect.
10. bf coal injection system according to claim 9 is it is characterised in that described first air compensation device is arranged at the first coal
On powder supervisor, described second air compensation device is arranged on the second coal dust supervisor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620848891.0U CN205893298U (en) | 2016-08-08 | 2016-08-08 | Blast furnace coal injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620848891.0U CN205893298U (en) | 2016-08-08 | 2016-08-08 | Blast furnace coal injection system |
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| CN205893298U true CN205893298U (en) | 2017-01-18 |
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| CN201620848891.0U Active CN205893298U (en) | 2016-08-08 | 2016-08-08 | Blast furnace coal injection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205422A (en) * | 2019-07-19 | 2019-09-06 | 武汉摩林翰机电设备有限公司 | Blast-furnace coal powder preheats injection system |
-
2016
- 2016-08-08 CN CN201620848891.0U patent/CN205893298U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205422A (en) * | 2019-07-19 | 2019-09-06 | 武汉摩林翰机电设备有限公司 | Blast-furnace coal powder preheats injection system |
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| GR01 | Patent grant |