CN203602637U - Device for injecting mixed bituminous coal by virtue of exhaust gas self-circulation - Google Patents
Device for injecting mixed bituminous coal by virtue of exhaust gas self-circulation Download PDFInfo
- Publication number
- CN203602637U CN203602637U CN201320801670.4U CN201320801670U CN203602637U CN 203602637 U CN203602637 U CN 203602637U CN 201320801670 U CN201320801670 U CN 201320801670U CN 203602637 U CN203602637 U CN 203602637U
- Authority
- CN
- China
- Prior art keywords
- regulating valve
- circulation
- circulating line
- waste gas
- coal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002802 bituminous coal Substances 0.000 title abstract description 13
- 239000003245 coal Substances 0.000 claims abstract description 22
- 230000001105 regulatory effect Effects 0.000 claims abstract description 21
- 239000002912 waste gas Substances 0.000 claims description 18
- 239000000567 combustion gas Substances 0.000 claims description 14
- 239000000779 smoke Substances 0.000 claims description 12
- 239000000443 aerosol Substances 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 5
- 239000003546 flue gas Substances 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Manufacture Of Iron (AREA)
- Combustion Of Fluid Fuel (AREA)
Abstract
The utility model discloses a device for injecting mixed bituminous coal by virtue of exhaust gas self-circulation. The device comprises a circulating pipe, wherein one end of the circulating pipe is connected with a hot blast furnace through an exhaust gas regulating valve, and the other end of the circulating pipe is connected with a flue gas furnace through a flue gas regulating valve; an induced draft fan is arranged between the flue gas regulating valve and the flue gas furnace. The bituminous coal obtained by the device is good in grindability so that the pulverizing capacity of a medium-speed mill can be improved; the device is favorable for realizing high coal ratio and low cost of a blast furnace.
Description
Technical field
The utility model relates to the pulverized coal preparation system in a kind of blast furnace production, specifically a kind of device that utilizes waste gas self-circulation to mix aerosol spraying coal.
Background technology
In blast furnace is produced, due to coal-making system exhaust gas volumn deficiency, with the smokeless clean fine coal powder process winding-up of single kind, grindability index is poor always, and restriction blast furnace coal compares level.Need to utilize hot stove furnace exhaust to introduce pulverized coal preparation system for this reason, reduce coal dust cost, improve blast furnace coal ratio.
Summary of the invention
The purpose of this utility model is to provide a kind of device that utilizes waste gas self-circulation to mix aerosol spraying coal, and the bituminous coal grindability index that this device obtains is good, can improve medium speed mill powder process ability; Be beneficial to blast furnace and realize high-coal ratio.
The purpose of this utility model is achieved through the following technical solutions:
Utilize waste gas self-circulation to mix a device for aerosol spraying coal, it is characterized in that: this device comprises circulating line, one end of described circulating line is connected with hotblast stove by waste gas regulating valve, and the other end is connected with combustion gas furnace by smoke regulating valve; Between smoke regulating valve and combustion gas furnace, be provided with induced draft fan.
In the utility model, one end of described circulating line is connected with one group of hotblast stove respectively by one group of waste gas regulating valve.The hot gas of multiple hotblast stoves can be guided in circulating line like this.Equally, the other end of described circulating line is connected with one group of combustion gas furnace respectively by one group of smoke regulating valve; Between single smoke regulating valve and combustion gas furnace, be equipped with induced draft fan.Like this, the waste gas in circulating line can be distributed in multiple different combustion gas furnaces as required.On circulating line, be provided with oxygen, CO control point, carry out measurement and calibration, guarantee that proportioning is controlled.
The utility model is taken over road at exhaust gas emission chimney, adds by-pass valve control; Add oxygen, CO control point, by waste gas self-circulation technique, improve pulverized coal preparation system security context, realize bituminous coal/hard coal mixing powder process winding-up, reduce coal dust cost, improve blast furnace coal ratio.
Compared with prior art, the utility model has the advantages that: 1, bituminous coal grindability index is good, can improve medium speed mill powder process ability; 2, bituminous coal injection has good burning performance, and is beneficial to blast furnace and realizes high-coal ratio; 3, bituminous coal aboundresources, cheap, and ironmaking cost reduces approximately 18 yuan/t iron.
Benefit measuring and calculating of the present utility model: the utility model operation 1 year, because winding-up Australia coal in October, 2011 is not outside blowing bituminous coal, after flue gas self-circulation puts into operation, bituminous coal ratio reaches more than 35%, only 21935426 yuan of this create beneficial results during this time, under-capitalize 50,000 yuan, remarkable benefit.Meanwhile, can reduce powder process cost, blast furnace blowing bituminous coal raising substitution rate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Utilize waste gas self-circulation to mix a device for aerosol spraying coal, see Fig. 1, this device comprises that diameter is the circulating line 1 of 2400mm, and one end of circulating line is connected with hotblast stove by waste gas regulating valve 11, and the other end is connected with combustion gas furnace 3 by smoke regulating valve 12; Between smoke regulating valve 12 and combustion gas furnace 2, be provided with induced draft fan 13.In the present embodiment, one end of circulating line is connected with one group of 2 hotblast stove respectively by one group of 2 waste gas regulating valve.The hot gas of 2 hotblast stoves can be guided in circulating line like this.Equally, the other end of circulating line is connected with one group of 4 combustion gas furnace respectively by one group of 4 smoke regulating valve; Between single smoke regulating valve and combustion gas furnace, be equipped with induced draft fan.Like this, the waste gas in circulating line can be distributed in 4 different combustion gas furnaces as required.On circulating line, be provided with oxygen, CO control point, carry out measurement and calibration, guarantee that proportioning is controlled.
The utility model moves whole 1 year, and 21935426 yuan of actual create beneficial results are under-capitalized 50,000 yuan, remarkable benefit.Wherein also have blowing bituminous coal to improve grindability index, reduction powder process cost, blast furnace blowing bituminous coal are carried the benefit meter of high-coal ratio.
Claims (4)
1. a device that utilizes waste gas self-circulation to mix aerosol spraying coal, it is characterized in that: this device comprises circulating line (1), one end of described circulating line is connected with hotblast stove by waste gas regulating valve (11), and the other end is connected with combustion gas furnace (2) by smoke regulating valve (12); Between smoke regulating valve (12) and combustion gas furnace (2), be provided with induced draft fan (13).
2. the device that utilizes waste gas self-circulation to mix aerosol spraying coal according to claim 1, is characterized in that: one end of described circulating line (1) is connected with one group of hotblast stove respectively by one group of waste gas regulating valve (11).
3. the device that utilizes waste gas self-circulation to mix aerosol spraying coal according to claim 1, is characterized in that: the other end of described circulating line (1) is connected with one group of combustion gas furnace (2) respectively by one group of smoke regulating valve (12); Between single smoke regulating valve and combustion gas furnace, be equipped with induced draft fan (13).
4. the device that utilizes waste gas self-circulation to mix aerosol spraying coal according to claim 1, is characterized in that: on circulating line (1), be provided with oxygen, CO control point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320801670.4U CN203602637U (en) | 2013-12-09 | 2013-12-09 | Device for injecting mixed bituminous coal by virtue of exhaust gas self-circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320801670.4U CN203602637U (en) | 2013-12-09 | 2013-12-09 | Device for injecting mixed bituminous coal by virtue of exhaust gas self-circulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203602637U true CN203602637U (en) | 2014-05-21 |
Family
ID=50715324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320801670.4U Expired - Lifetime CN203602637U (en) | 2013-12-09 | 2013-12-09 | Device for injecting mixed bituminous coal by virtue of exhaust gas self-circulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203602637U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028357A (en) * | 2014-06-07 | 2014-09-10 | 秦皇岛首秦金属材料有限公司 | A medium-speed mill pulverizing system without an induced draft fan device for waste smoke |
| CN109252006A (en) * | 2018-11-12 | 2019-01-22 | 武汉钢铁有限公司 | The coal powder injection apparatus of blast furnace and its control method of controllable medium-speed pulverizer entrance oxygen content |
| CN110617715A (en) * | 2019-10-14 | 2019-12-27 | 云南德胜钢铁有限公司 | Hot blast stove high-temperature waste gas recycling method |
-
2013
- 2013-12-09 CN CN201320801670.4U patent/CN203602637U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028357A (en) * | 2014-06-07 | 2014-09-10 | 秦皇岛首秦金属材料有限公司 | A medium-speed mill pulverizing system without an induced draft fan device for waste smoke |
| CN109252006A (en) * | 2018-11-12 | 2019-01-22 | 武汉钢铁有限公司 | The coal powder injection apparatus of blast furnace and its control method of controllable medium-speed pulverizer entrance oxygen content |
| CN110617715A (en) * | 2019-10-14 | 2019-12-27 | 云南德胜钢铁有限公司 | Hot blast stove high-temperature waste gas recycling method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140521 |
|
| CX01 | Expiry of patent term |