CN206337285U - A kind of pulverized coal preparation system suitable for blast furnace PCI technology - Google Patents
A kind of pulverized coal preparation system suitable for blast furnace PCI technology Download PDFInfo
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- CN206337285U CN206337285U CN201621394666.0U CN201621394666U CN206337285U CN 206337285 U CN206337285 U CN 206337285U CN 201621394666 U CN201621394666 U CN 201621394666U CN 206337285 U CN206337285 U CN 206337285U
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- electronic weighing
- combustion adjuvant
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Abstract
The utility model discloses a kind of pulverized coal preparation system suitable for blast furnace PCI technology, belong to technical field of ferrous metallurgy, including fuel pulverizing plant, the fuel pulverizing plant includes the run coal bin being sequentially connected with from top to bottom, first stop valve, electronic weighing type coal feeder and coal pulverizer, also include burning-rate accelerator adding device, the burning-rate accelerator adding device includes combustion adjuvant storehouse, the electronic weighing type conveying worm connected with combustion adjuvant storehouse and the second stop valve being arranged on both connecting pipelines, combustion adjuvant branch pipe is provided with below electronic weighing type conveying worm, combustion adjuvant branch pipe merges into blanking supervisor with the raw coal branch pipe set below electronic weighing type coal feeder, blanking supervisor outlet is connected with coal pulverizer inlet.Because the burning-rate accelerator adding device and raw coal add-on system set up are parallel relationship, the two shares 1 coal pulverizer, can simplify burning-rate accelerator adding device system flow, reduces the equipment investments such as ultra-fine grinding mill, thus with significant economic benefit.
Description
Technical field
The utility model belongs to technical field of ferrous metallurgy, and in particular to a kind of powder system processed suitable for blast furnace PCI technology
System.
Background technology
Pulverized coal injection is the key technology that coke ratio is greatly lowered and changes blast furnace energy structure, can effectively alleviate coking coal
The problem of shortage of resources and reduction pig iron cost.Appropriate combustion adjuvant is added in blast furnace injection coal powder, can be significantly improved
Combustibility of the coal dust in stove, improves Combustion Efficiency of Coal Powder, so as to improve coal ejection ratio, making for expensive coke is substituted to greatest extent
With rate, very important effect is played at energy-saving aspect.
At present, the adding method of blast furnace injection coal dust combustion improver mainly has two major classes：The first is before blast-furnace tuyere
Add, such as patent《A kind of environment-friendlyblast blast furnace coal injection combustion improver and addition method》(application number：201110262650.X), it is but such a
Addition manner is uniformly mixed therebetween and accurate quantification control not only bad for combustion adjuvant with coal dust, and is needed in advance to helping
Combustion agent is pre-processed, with certain limitation；It is for second to add during the pulverized coal preparation in blast furnace PCI technology,
Such as patent《A kind of coal powder injection apparatus of blast furnace》(application number：201320891932.0), this method overcomes first to a certain extent
The weak point that kind of combustion adjuvant addition manner is present, but due to having newly increased 1 set ultra-fine grinding mill, such a addition manner invest compared with
It is high.
Utility model content
In view of this, the purpose of this utility model is, in order to overcome the above-mentioned deficiency of prior art, and to propose a kind of be applicable
In the pulverized coal preparation system of blast furnace PCI technology.
To reach above-mentioned purpose, the purpose of this utility model is achieved through the following technical solutions：
A kind of pulverized coal preparation system suitable for blast furnace PCI technology, including fuel pulverizing plant, the fuel pulverizing plant bag
The run coal bin being sequentially connected with from top to bottom, the first stop valve, electronic weighing type coal feeder and coal pulverizer are included, is also included and raw coal
Storehouse, the first stop valve and electronic weighing type coal feeder are in the burning-rate accelerator adding device of parallel connectivity, the combustion adjuvant addition
Device includes combustion adjuvant storehouse, the electronic weighing type conveying worm connected with combustion adjuvant storehouse and is arranged on both connecting pipelines
Combustion adjuvant branch pipe, combustion adjuvant branch pipe and electronic weighing type are provided with below second stop valve, electronic weighing type conveying worm
The raw coal branch pipe set below feeder merges into blanking supervisor, and blanking supervisor outlet is connected with coal pulverizer inlet.
Further, the fuel pulverizing plant also includes combustion gas furnace, cloth bag collection machine, vibratory sieve, Pulverized Coal Bin and row's powder wind
Machine, the combustion gas furnace is connected with the entrance of coal pulverizer, the entrance of the cloth bag collection machine and the outlet of coal pulverizer, and cloth bag is received
The discharge of powder device is connected by vibratory sieve with Pulverized Coal Bin, and its gas vent is connected with Powder discharging fan.
The beneficial effects of the utility model are：
1) combustion adjuvant can be achieved uniformly to mix therebetween with coal dust and accurate quantification mixing control；
2) simplify burning-rate accelerator adding device system flow, reduce the equipment investments such as ultra-fine grinding mill；
3) can be applied widely to the pulverizing system transformation of existing blast furnace PCI technology.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1-run coal bin；2-combustion adjuvant storehouse；3-the first stop valve；4-the second stop valve；5-electronic weighing type
Feeder；6-electronic weighing type conveying worm；7-raw coal branch pipe；8-combustion adjuvant branch pipe；9-blanking is responsible for；10-flue gas
Stove；11-coal pulverizer；12-cloth bag collection machine；13-vibratory sieve；14-Pulverized Coal Bin；15-Powder discharging fan.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
As shown in figure 1, a kind of pulverized coal preparation system suitable for blast furnace PCI technology of the present embodiment, including fuel pulverizing plant
And burning-rate accelerator adding device, the fuel pulverizing plant of the present embodiment includes run coal bin 1, the first stop valve 3, electronic weighing type to coal
Machine 5, coal pulverizer 11, combustion gas furnace 10, cloth bag collection machine 12, vibratory sieve 13, Pulverized Coal Bin 14 and Powder discharging fan 15；Wherein, run coal bin,
First stop valve, electronic weighing type coal feeder and coal pulverizer are sequentially connected with from top to bottom, and combustion gas furnace is connected with the entrance of coal pulverizer,
The entrance of cloth bag collection machine and the outlet of coal pulverizer, the discharge of cloth bag collection machine are connected by vibratory sieve and Pulverized Coal Bin
Logical, its gas vent is connected with Powder discharging fan；The burning-rate accelerator adding device of the present embodiment includes combustion adjuvant storehouse 2, the second stop valve 4
Constituted with electronic weighing type conveying worm 6；The setting combustion adjuvant branch pipe 8 below electronic weighing type conveying worm 6, and with
The raw coal branch pipe 7 that the lower section of electronic weighing type coal feeder 5 is set in fuel pulverizing plant merges into blanking supervisor 9, and blanking supervisor 9 goes out
Mouth is connected with the entrance of coal pulverizer 11.
Control mode：Combustion adjuvant in combustion adjuvant storehouse 2 is required according to technique productions, through electronic weighing type conveying worm 6
Raw coal branch pipe 7 is quantitatively mixed by combustion adjuvant branch pipe 8 after weighing, coal pulverizer 11 is entered by blanking supervisor 9 after the two mixing.
The present embodiment can be achieved combustion adjuvant and uniformly mixed therebetween with coal dust and essence by increasing burning-rate accelerator adding device
It is determined that amount mixing control, and because the burning-rate accelerator adding device and raw coal add-on system set up are parallel relationship, the two shares 1
Coal pulverizer, can simplify burning-rate accelerator adding device system flow, reduce the equipment investments such as ultra-fine grinding mill, thus with significant economical
Benefit, can be applied widely to the pulverizing system transformation of existing blast furnace PCI technology.
Finally illustrate, preferred embodiment above is only unrestricted to illustrate the technical solution of the utility model, to the greatest extent
The utility model is described in detail by above preferred embodiment for pipe, but those skilled in the art should manage
Solution, can make various changes, without departing from the utility model claims institute to it in the form and details
The scope of restriction.
Claims (2)
1. a kind of pulverized coal preparation system suitable for blast furnace PCI technology, including fuel pulverizing plant, the fuel pulverizing plant include
Run coal bin, the first stop valve, electronic weighing type coal feeder and the coal pulverizer being sequentially connected with from top to bottom, it is characterised in that：Also wrap
The burning-rate accelerator adding device in parallel connectivity with run coal bin, the first stop valve and electronic weighing type coal feeder is included, it is described to help
Combustion agent adding set includes combustion adjuvant storehouse, the electronic weighing type conveying worm connected with combustion adjuvant storehouse and is arranged on both connections
Combustion adjuvant branch pipe, combustion adjuvant branch pipe and electricity are provided with below the second stop valve on pipeline, electronic weighing type conveying worm
The raw coal branch pipe set below sub- weighing coal feeder merges into blanking supervisor, and blanking supervisor outlet is connected with coal pulverizer inlet.
2. a kind of pulverized coal preparation system suitable for blast furnace PCI technology according to claim 1, it is characterised in that：The coal dust
Preparation facilities also includes combustion gas furnace, cloth bag collection machine, vibratory sieve, Pulverized Coal Bin and Powder discharging fan, the combustion gas furnace and coal pulverizer
Entrance is connected, the entrance of the cloth bag collection machine and the outlet of coal pulverizer, and the discharge of cloth bag collection machine passes through vibration
Sieve is connected with Pulverized Coal Bin, and its gas vent is connected with Powder discharging fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621394666.0U CN206337285U (en) | 2016-12-19 | 2016-12-19 | A kind of pulverized coal preparation system suitable for blast furnace PCI technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621394666.0U CN206337285U (en) | 2016-12-19 | 2016-12-19 | A kind of pulverized coal preparation system suitable for blast furnace PCI technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206337285U true CN206337285U (en) | 2017-07-18 |
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ID=59301045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621394666.0U Active CN206337285U (en) | 2016-12-19 | 2016-12-19 | A kind of pulverized coal preparation system suitable for blast furnace PCI technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206337285U (en) |
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2016
- 2016-12-19 CN CN201621394666.0U patent/CN206337285U/en active Active
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