CN102732657A - Method for clearing away blocking of pressure-equalizing diffusion pipeline of blast furnace with double-bell type furnace top - Google Patents
Method for clearing away blocking of pressure-equalizing diffusion pipeline of blast furnace with double-bell type furnace top Download PDFInfo
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- CN102732657A CN102732657A CN2012102482921A CN201210248292A CN102732657A CN 102732657 A CN102732657 A CN 102732657A CN 2012102482921 A CN2012102482921 A CN 2012102482921A CN 201210248292 A CN201210248292 A CN 201210248292A CN 102732657 A CN102732657 A CN 102732657A
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Abstract
The invention relates to a method for clearing away blocking of a pressure-equalizing diffusion pipeline of a blast furnace with a double-bell type furnace top. The method comprises the following steps of: 1), closing a big bell and a small bell; opening a big pressure equalizing valve and a small pressure equalizing valve; and introducing strong-coal air current formed by half-clean gas into a pressure reduction pipeline through a half-clean gas pipeline and a pressurizing pipeline, and discharging the strong-coal air current through the small pressure equalizing valve and keeping for 20-60 seconds, wherein according to the process, the pressurizing pipeline and the pressure reduction pipeline can be blown to be clean; and 2) closing the big pressure equalizing valve, opening the big bell and keeping for 20-60 seconds; and closing the big bell and the small pressure equalizing valve, wherein according to the process, the blind end of one section of the pipeline communicated with a big bell chamber can be blown to be clean. The method is simple, free of addition of any equipment, and good in clearing effect.
Description
Technical field
The present invention relates to a kind of removing way of line clogging, be particularly suitable for blast furnace pressure-equalizing and discharging pipeline.
Background technology
After blast furnace adopts high top pressure operation; The bell and the seal valve of the big upper bell of clock-type furnace roof, clock valve formula furnace roof and the unlatching of not having the feed bin upper-lower seal valve etc. of bell type furnace roof, all need bell, above the seal valve or below charge into or emit pressure coal gas all press.The coal gas that the pressure-equalizing and discharging system uses generally contains a large amount of dust and aqueous vapor, in pipeline, can be bonded to gradually on the inner-walls of duct during operation, and long time integration can be accused and caused internal diameter of the pipeline to diminish even accomplish obstruction.Top charging in this time system can't normally all press, and can cause the valve opening difficulty maybe can't open, and need overhaul dust stratification, dredging pipeline are cleared up in the line clogging position.
Summary of the invention
In order to overcome the shortcoming of prior art, the present invention provides a kind of way of removing the two clock-type furnace roof pressure-equalizing and discharging line cloggings of blast furnace, and its method is simple, need not increase any equipment, removes effective.
The present invention solves the technical scheme that its technical problem takes: comprise the following steps: 1), close great bell and little clock; Open big pressure-balance valve and little pressure-balance valve; The more than half clean coal tracheaes of strong coal air communication that half purified gas forms, pressure pipeline get into gas relief line; The back keeps 20-60 second through little pressure-balance valve emptying, and this process can purge pressure pipeline and gas relief line clean; 2), close big pressure-balance valve, open great bell, keep 20-60 second, close great bell and little pressure-balance valve, this process can purge the segment pipe cecum with great bell chamber UNICOM clean.
The inventive method is simple, need not increase any equipment, removes effective.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Accompanying drawing is a synoptic diagram of the present invention.
Embodiment
Shown in accompanying drawing; 1), close great bell 8 and little clock 7 the present invention includes the following step:; Open the more than half clean coal tracheae of strong coal air communication that big pressure-balance valve 5 and little pressure-balance valve 1, half purified gas form 3, pressure pipeline 4 gets into gas relief lines 2, the back is through little pressure-balance valve 1 emptying; Kept for 30 seconds, this process can purge pressure pipeline 4 and gas relief line 2 clean; 2), close big pressure-balance valve 5, open great bell 8, kept for 30 seconds, close great bell 8 and little pressure-balance valve 1, this process can purge the segment pipe cecum 6 with great bell chamber UNICOM clean.
Changing normal material loading program over to is all valves to be returned to purge preceding state, carries out works better.
Claims (1)
1. way of removing the two clock-type furnace roof pressure-equalizing and discharging line cloggings of blast furnace; It is characterized in that: comprise the following steps: 1), close great bell (8) and little clock (7); Open big pressure-balance valve (5) and little pressure-balance valve (1), the more than half clean coal tracheaes of strong coal air communication (3) that half purified gas forms, pressure pipeline (4) get into gas relief line (2), and the back is through little pressure-balance valve (1) emptying; Keep 20-60 second, this process can purge pressure pipeline (4) and gas relief line (2) clean; 2), close big pressure-balance valve (5), open great bell (8), keep 20-60 second, close great bell (8) and little pressure-balance valve (1), this process can purge the segment pipe cecum (6) with great bell chamber UNICOM clean.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102482921A CN102732657A (en) | 2012-07-17 | 2012-07-17 | Method for clearing away blocking of pressure-equalizing diffusion pipeline of blast furnace with double-bell type furnace top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102482921A CN102732657A (en) | 2012-07-17 | 2012-07-17 | Method for clearing away blocking of pressure-equalizing diffusion pipeline of blast furnace with double-bell type furnace top |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102732657A true CN102732657A (en) | 2012-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102482921A Pending CN102732657A (en) | 2012-07-17 | 2012-07-17 | Method for clearing away blocking of pressure-equalizing diffusion pipeline of blast furnace with double-bell type furnace top |
Country Status (1)
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| CN (1) | CN102732657A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS552767A (en) * | 1978-06-23 | 1980-01-10 | Nippon Kokan Kk <Nkk> | Blast furnace facilities |
| US4196892A (en) * | 1976-03-17 | 1980-04-08 | Air Pollution Industries | Apparatus for equalizing top gas pressure in a blast furnace |
| JPH06179904A (en) * | 1992-12-15 | 1994-06-28 | Nippon Steel Corp | Pressure equalizing method in charging device for bell type blast furnace |
| CN201321465Y (en) * | 2008-12-23 | 2009-10-07 | 南京钢铁联合有限公司 | Dust removing device for blast furnace gas pipe |
| CN201793589U (en) * | 2010-06-30 | 2011-04-13 | 芜湖新兴铸管有限责任公司 | Iron making blast furnace top pressure-balanced discharged waste gas and noise treatment system |
-
2012
- 2012-07-17 CN CN2012102482921A patent/CN102732657A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4196892A (en) * | 1976-03-17 | 1980-04-08 | Air Pollution Industries | Apparatus for equalizing top gas pressure in a blast furnace |
| JPS552767A (en) * | 1978-06-23 | 1980-01-10 | Nippon Kokan Kk <Nkk> | Blast furnace facilities |
| JPH06179904A (en) * | 1992-12-15 | 1994-06-28 | Nippon Steel Corp | Pressure equalizing method in charging device for bell type blast furnace |
| CN201321465Y (en) * | 2008-12-23 | 2009-10-07 | 南京钢铁联合有限公司 | Dust removing device for blast furnace gas pipe |
| CN201793589U (en) * | 2010-06-30 | 2011-04-13 | 芜湖新兴铸管有限责任公司 | Iron making blast furnace top pressure-balanced discharged waste gas and noise treatment system |
Non-Patent Citations (2)
| Title |
|---|
| 李汉江等: "武钢1#高炉炉顶均压系统的改进", 《武汉工程职业技术学院学报》 * |
| 罗成等: "马钢1号高炉炉顶均压系统的使用与维护", 《马钢技术》 * |
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Application publication date: 20121017 |