CN208328052U - A kind of fine coal blowing unit of blast that coal powder injection is stable - Google Patents
A kind of fine coal blowing unit of blast that coal powder injection is stable Download PDFInfo
- Publication number
- CN208328052U CN208328052U CN201820551187.8U CN201820551187U CN208328052U CN 208328052 U CN208328052 U CN 208328052U CN 201820551187 U CN201820551187 U CN 201820551187U CN 208328052 U CN208328052 U CN 208328052U
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- China
- Prior art keywords
- coal
- general pipeline
- injection
- powder injection
- coal powder
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- Expired - Fee Related
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- 239000003245 coal Substances 0.000 title claims abstract description 140
- 238000002347 injection Methods 0.000 title claims abstract description 124
- 239000007924 injection Substances 0.000 title claims abstract description 124
- 239000000843 powder Substances 0.000 title claims abstract description 73
- 238000007664 blowing Methods 0.000 title claims abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 43
- 229910052757 nitrogen Inorganic materials 0.000 claims description 20
- 238000010926 purge Methods 0.000 claims description 6
- 238000003795 desorption Methods 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 4
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 239000007921 spray Substances 0.000 description 7
- 239000002817 coal dust Substances 0.000 description 6
- 239000004484 Briquette Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229940098458 powder spray Drugs 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Blast Furnaces (AREA)
- Manufacture Of Iron (AREA)
Abstract
A kind of fine coal blowing unit of blast that coal powder injection is stable, including the first coal powder injection general pipeline and the second coal powder injection general pipeline, the both ends of first coal powder injection general pipeline are connected to the first injection tank and the first distributor, the both ends of second coal powder injection general pipeline are connected to the second injection tank and the second distributor, it further include communicating pipe, the both ends of communicating pipe are connected to each coal powder injection general pipeline, the first coal injection ball valve of communicating pipe is equipped at the both ends of communicating pipe, communicating pipe the second coal injection ball valve, first coal powder injection general pipeline is equipped with the first general pipeline coal injection ball valve, second coal powder injection general pipeline is equipped with the second general pipeline coal injection ball valve, the a port of communicating pipe is between the first general pipeline coal injection ball valve and the first distributor, another port of communicating pipe is between the second general pipeline coal injection ball valve and the second distributor.The utility model can be quickly switched into in addition coal powder injection general pipeline is for two blast furnace distributor blowings all the way, reducing influences because of the total blockage of coal powder injection to conditions of blast furnace bring, it is ensured that smooth operation of furnace stabilizes molten steel quality after coal powder injection general pipeline is blocked all the way.
Description
Technical field
The utility model relates to a kind of fine coal blowing unit of blast that the coal powder injection for Pulverized Coal Injection System with Fuzzy is stable.
Background technique
Pulverized coal injection Chang Yong general pipeline adds the technology of stokehold distributor to be blown at present, and coal dust is exported by injection tank, through coal
Powder general pipeline is sent to blast furnace platform, sets distributor on blast furnace platform, by each outlet stool of distributor that coal dust is equal after distributor
Even each air port of feeding blast furnace.But due to the problems such as coal dust moisture is big and operation error, the total blockage of coal powder injection frequent occurrence
Phenomenon after the total blockage of coal powder injection, will result directly in pulverized coal injection stopping, affecting greatly to conditions of blast furnace.Present some enterprises
Industry in order to reduce because of coal spraying pipeline blocking caused by loss, take the mode of two coal powder injection main pipes of setting, each coal powder injection main pipe difference
Pulverized coal conveying is to distributor, a possibility that then a point odevity branch pipe is sent to air port, although this method reduces total blockage,
But the processing after blocking can still produce bigger effect the stable smooth operation of blast furnace, and molten steel quality is caused to fluctuate, and increase
Downstream process controls difficulty.
Utility model content
The purpose of this utility model is that aiming at the disadvantages of the prior art, coal powder injection general pipeline can be avoided or reduced by providing one kind
The adverse effect to blast furnace is blocked, thus the fine coal blowing unit of blast that the coal powder injection for protecting blast furnace stable smooth operation is stable.
Problem described in the utility model is realized with following technical proposals:
A kind of fine coal blowing unit of blast that coal powder injection is stable, including the first coal powder injection general pipeline and the second coal powder injection general pipeline, the first spray
The both ends of coal general pipeline are respectively communicated with the first injection tank and the first distributor, and the both ends of the second coal powder injection general pipeline are respectively communicated with the second blowing
Tank and the second distributor further include communicating pipe, and the both ends of communicating pipe are connected to each coal powder injection general pipeline respectively, at the both ends of communicating pipe point
Not She You communicating pipe the first coal injection ball valve, the second coal injection ball valve of communicating pipe, the first coal powder injection general pipeline be equipped with the first general pipeline coal powder injection ball
Valve, the second coal powder injection general pipeline be equipped with the second general pipeline coal injection ball valve, a port of communicating pipe be located at the first general pipeline coal injection ball valve with
Between first distributor, another port of communicating pipe is between the second general pipeline coal injection ball valve and the second distributor.
The stable fine coal blowing unit of blast of above-mentioned coal powder injection further includes nitrogen tube and four-way valve, one end connection of nitrogen tube
Nitrogen gas tank, the other end connect four-way valve first port, four-way valve second port through the first branch pipe connect the first coal powder injection general pipeline, four
Port valve third port connects pipe through the second branch pipe, and the 4th port of four-way valve connects the second coal powder injection general pipeline through third branch pipe.
The stable fine coal blowing unit of blast of above-mentioned coal powder injection, is equipped with desorption tube communicating pipe, and desorption tube is equipped with diffusion valve.
The stable fine coal blowing unit of blast of above-mentioned coal powder injection, the first branch outlet end are located at the first general pipeline coal injection ball valve and company
Between the first coal injection ball valve of siphunculus, third branch outlet end be located at the second general pipeline coal injection ball valve and communicating pipe the second coal injection ball valve it
Between, nitrogen purge valve is respectively equipped on the first, second, third branch pipe, nitrogen tube is equipped with nitrogen pipeline valve.
The utility model is for solving the problems, such as that the total blockage of coal powder injection improves blast furnace natural labor influence, using dual circuit
Double distributors, and the communicating pipe for being connected to each coal powder injection general pipeline and corresponding control valve are set, when coal powder injection general pipeline is blocked all the way
Afterwards, it can quickly be switched to in addition coal powder injection general pipeline can maintain the normal fortune of blast furnace for two blast furnace distributor blowings all the way
Row, greatly reducing influences because of the total blockage of coal powder injection to conditions of blast furnace bring, it is ensured that smooth operation of furnace stabilizes molten iron matter
Amount.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial enlarged view in Fig. 1 at A.
Each list of reference numerals in figure are as follows: the 1, first coal powder injection general pipeline, 2, nitrogen tube, the 3, second coal powder injection general pipeline, the 4, second general pipeline spray
Coal briquette valve, 5, third branch pipe, 6, four-way valve, 7, the second coal injection ball valve of communicating pipe, the 8, second distributor, the 9, second branch pipe, 10, company
Siphunculus, the 11, first branch pipe, 12, desorption tube, 13, diffusion valve, the 14, first distributor, 15, the first coal injection ball valve of communicating pipe, 16,
First general pipeline coal injection ball valve, the 17, first injection tank, the 18, second injection tank, 19, nitrogen purge valve, 20, nitrogen pipeline valve.
Specific embodiment
Referring to Fig. 1, Fig. 2, the utility model is a kind of blowing device of double distributors of setting dual circuit.Described device includes
First coal powder injection general pipeline 1 and the second coal powder injection general pipeline 3, wherein the both ends of the first coal powder injection general pipeline are respectively communicated with the first injection tank 17 and
One distributor 14, the first coal powder injection general pipeline are equipped with the first general pipeline coal injection ball valve 16；The both ends of second coal powder injection general pipeline are respectively communicated with
Two injection tanks 18 and the second distributor 8, the second coal powder injection general pipeline are equipped with the second general pipeline coal injection ball valve 4.To avoid or reduce coal powder injection
Total influence of the blockage to blast fumance, the utility model are provided with a communicating pipe 10, the both ends of communicating pipe respectively with each spray
Coal general pipeline is communicated, and is respectively equipped with the first coal injection ball valve of communicating pipe 15, the second coal injection ball valve of communicating pipe 7 at the both ends of communicating pipe.Even
Between the first general pipeline coal injection ball valve and the first distributor, the left side port of communicating pipe is located at the second general pipeline for port on the right side of siphunculus
Between coal injection ball valve and the second distributor.Scavenging conduit 12 is additionally provided on communicating pipe, scavenging conduit is equipped with pneumatic ball valve 13.
Referring to Fig. 2, described device is additionally provided with nitrogen tube 2 and four-way valve 6, and one end of nitrogen tube connects nitrogen gas tank, nitrogen tube
Other end connection four-way valve first port (lower port), four-way valve second port (right output port) connects through the first branch pipe 11
First coal powder injection general pipeline, four-way valve third port (upper port) connect pipe, the 4th port (left end of four-way valve through the second branch pipe 9
Mouthful) through second coal powder injection general pipeline of the connection of third branch pipe 5.First branch outlet end is located at the first general pipeline coal injection ball valve and communicating pipe first
Between coal injection ball valve, third branch outlet end is between the second coal injection ball valve of the second general pipeline coal injection ball valve and communicating pipe,
One, nitrogen purge valve 19 is respectively equipped on second, third branch pipe, nitrogen tube is equipped with nitrogen pipeline valve 20.
The course of work of the utility model is as follows: after a coal powder injection general pipeline is blocked, by the spray on coal powder injection general pipeline
Coal briquette valve is closed, and is cut off contacting for coal powder injection general pipeline and distributor, is then beaten the two communicating pipes coal injection ball valve on communicating pipe
It opens, in this way, supplying two distributors with another coal powder injection general pipeline coal powder injection not blocked.Operational process shows stifled in processing
In coal powder injection general pipeline 3 hours or so time of plug, than existing structure can 30 tons of more Coal powder spray, greatly reduce because of the total pipe plug of coal powder injection
The spray loss of coal amount caused by plug, stablizes the uniformity of blast-furnace tuyere injecting coal quantity, ensure that the stable smooth operation of blast furnace.When the spray of blocking
After coal general pipeline has been handled, its corresponding coal injection ball valve is opened, then successively closes communicating pipe coal injection ball valve, so that it may be restored to spray
The coal-supply way of the double distributors of coal dual circuit.To prevent the coal dust among communicating pipe upper two coal injection ball valves from accumulating, sprayed at two
After coal briquette valve is closed, diffusion valve 13 is opened, the nitrogen purge valve on the second branch pipe 9 is then opened, it can will be in connecting pipe
Coal dust purging it is clean, prevent from not having to for a long time and causing coal dust accumulation agglomeration, influence the permeability of communicating pipe.
Claims (4)
1. a kind of fine coal blowing unit of blast that coal powder injection is stable, it is characterised in that: including the first coal powder injection general pipeline (1) and the second coal powder injection
General pipeline (3), the both ends of the first coal powder injection general pipeline are respectively communicated with the first injection tank (17) and the first distributor (14), the second coal powder injection general pipeline
Both ends be respectively communicated with the second injection tank (18) and the second distributor (8), further include communicating pipe (10), the both ends difference of communicating pipe
It is connected to each coal powder injection general pipeline, is respectively equipped with the first coal injection ball valve of communicating pipe (15), the second coal powder injection of communicating pipe at the both ends of communicating pipe
Ball valve (7), the first coal powder injection general pipeline are equipped with the first general pipeline coal injection ball valve (16), and the second coal powder injection general pipeline is equipped with the second general pipeline coal powder injection
Ball valve (4), a port of communicating pipe is between the first general pipeline coal injection ball valve and the first distributor, another end of communicating pipe
Mouth is between the second general pipeline coal injection ball valve and the second distributor.
2. the stable fine coal blowing unit of blast of coal powder injection according to claim 1, it is characterised in that: further include nitrogen tube
(2) and four-way valve (6), one end of nitrogen tube connect nitrogen gas tank, and the other end connects the first port of four-way valve, four-way valve second end
Mouth connects the first coal powder injection general pipeline through the first branch pipe (11), and four-way valve third port connects pipe, four-way valve through the second branch pipe (9)
4th port connects the second coal powder injection general pipeline through third branch pipe (5).
3. the stable fine coal blowing unit of blast of coal powder injection according to claim 2, it is characterised in that: communicating pipe is equipped with and puts
Separate tube (12), desorption tube are equipped with diffusion valve (13).
4. the stable fine coal blowing unit of blast of coal powder injection according to claim 3, it is characterised in that: the first branch outlet end
Between the first coal injection ball valve of the first general pipeline coal injection ball valve and communicating pipe, third branch outlet end is located at the second general pipeline coal powder injection ball
Between the second coal injection ball valve of valve and communicating pipe, nitrogen purge valve (19), nitrogen tube are respectively equipped on the first, second, third branch pipe
It is equipped with nitrogen pipeline valve (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820551187.8U CN208328052U (en) | 2018-04-18 | 2018-04-18 | A kind of fine coal blowing unit of blast that coal powder injection is stable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820551187.8U CN208328052U (en) | 2018-04-18 | 2018-04-18 | A kind of fine coal blowing unit of blast that coal powder injection is stable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208328052U true CN208328052U (en) | 2019-01-04 |
Family
ID=64781532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820551187.8U Expired - Fee Related CN208328052U (en) | 2018-04-18 | 2018-04-18 | A kind of fine coal blowing unit of blast that coal powder injection is stable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208328052U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628671A (en) * | 2018-12-29 | 2019-04-16 | 云南玉溪仙福钢铁（集团）有限公司 | A kind of anti-fracture coal dust recycling stocking system applied to metallurgy |
-
2018
- 2018-04-18 CN CN201820551187.8U patent/CN208328052U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628671A (en) * | 2018-12-29 | 2019-04-16 | 云南玉溪仙福钢铁（集团）有限公司 | A kind of anti-fracture coal dust recycling stocking system applied to metallurgy |
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| 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: 20190104 |
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| CF01 | Termination of patent right due to non-payment of annual fee |