CN2293724Y - Exhaust gas treatment device in powder making system of power station boiler - Google Patents
Exhaust gas treatment device in powder making system of power station boiler Download PDFInfo
- Publication number
- CN2293724Y CN2293724Y CN 96242050 CN96242050U CN2293724Y CN 2293724 Y CN2293724 Y CN 2293724Y CN 96242050 CN96242050 CN 96242050 CN 96242050 U CN96242050 U CN 96242050U CN 2293724 Y CN2293724 Y CN 2293724Y
- Authority
- CN
- China
- Prior art keywords
- powder
- boiler
- sack cleaner
- exhaust gas
- treatment device
- 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 - Fee Related
Links
- 239000000843 powder Substances 0.000 title claims abstract description 23
- 239000003245 coal Substances 0.000 claims description 22
- 238000002360 preparation method Methods 0.000 claims description 8
- 239000002023 wood Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 17
- 238000007599 discharging Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
Images
Abstract
The utility model provides a ventilation air treatment device in power plant boiler powder process system, including the sack cleaner, vice powder storehouse, the secondary combustor triplex even has airlock and saw-dust separator between sack cleaner and the vice powder storehouse, is equipped with the powder feeder between vice powder storehouse and the secondary combustor. The utility model discloses can reduce exhaust gas temperature about 20 ℃, improve about the boiler benefit 2%, practice thrift the boiler and ignite and combustion-supporting more than 30% with oil, reduce powder exhauster maintenance work load and maintenance cost.
Description
The utility model relates to weary gas disposal device in a kind of station boiler pulverized coal preparation system.
At present, the weary gas of the most of pulverized coal preparation systems of station boiler is directly sent into burner hearth in the mode of tertiary air by the tertiary air nozzles by mill exhauster and is participated in burning, this arrangement in actual motion because pulverized coal preparation system and burner hearth inleakage are big, limited sending into of secondary air flow, operations staff's air distribution adjustment of can't effectively burning, cause the flue-gas temperature level of burner hearth to descend, exhaust gas temperature raises, unstable combustion when unburned carbon loss increase and underload, influence the safety and economic operation of boiler, boiler combustion efficiency is on the low side, and coal consumption is higher.Because weary gas dust content height is accelerated the mill exhauster wearing and tearing, maintenance capacity is big in addition.
The purpose of this utility model just provides a kind of device and be used for handling the weary gas of discharging in the pulverized coal preparation system from pulverized-coal collector, and it more effectively is utilized.
The purpose of this utility model can realize by following scheme, and sack cleaner or electric cleaner or efficient cyclone separator are installed in the pulverized-coal collector outlet back in pulverized coal preparation system.Carrying out efficient gas powder in the weary gas introducing sack cleaner with the pulverized-coal collector discharge separates, the microfine coal more than 99.5% in the weary gas is separated, through depositing in the secondary powder storehouse behind flapper and the wood scraps separator, deposit the microfine coal in the secondary powder storehouse in, be admitted in the auxiliary burner again by machine supplying powder and spray into the burner hearth burning by auxiliary burner, be used for boiler of feeding igniting and low-load combustion-stabilizing usefulness, this auxiliary burner just often can not participate in burning, the weary gas of discharging from sack cleaner is extracted out through the mill exhauster in the former pulverized coal preparation system, can divide three tunnel dischargings, one the tunnel recycles coordination powder process as coal pulverizer exerts oneself, one the tunnel is sent to the pressure fan inlet, and one the tunnel sends into chimney row to atmosphere.
Below in conjunction with accompanying drawing the utility model is further described
Fig. 1 the utility model structural representation
The utility model comprises sack cleaner 1: secondary powder storehouse 2: auxiliary burner 3.Be connected with flapper 5 and wood scraps separator 4 between sack cleaner 1 and the secondary powder storehouse 2, between secondary powder storehouse 2 and the auxiliary burner 3 machine supplying powder 6 is housed, the weary gas of discharging from pulverized-coal collector is not directly to send into the burner hearth burning by the tertiary air nozzles but enter sack cleaner 1, under the effect of sack cleaner, the microfine coal more than 99.5% in the weary gas is separated.Like this, help to improve the fire box temperature level, stable ignition and burning reduce and stop working, and also help strengthening simultaneously secondary air flow, and convenient burning air distribution reduces unburned carbon loss, and the raising furnace outlet gas temperature improves main vapour and reheat steam temperature.The microfine coal of separating from sack cleaner deposits in the secondary powder storehouse 2 through flapper 5 and wood scraps separator 4, utilize the easily ignitable characteristic of microfine coal, adopt high concentration pulverized coal to carry and combustion technology, by machine supplying powder 6 microfine coal is transported in the auxiliary burner 3 again and sprays into the burner hearth burning by auxiliary burner, be used for ignition of the boiler and the steady combustion between low-load period, save ignition of the boiler and help fuel oil.Separate the weary gas that enters mill exhauster from sack cleaner, its coal dust content is few, and dust content reduces significantly.Therefore reduced the wear problem of mill exhauster, the service life of having improved mill exhauster.The weary gas of discharging from mill exhauster can divide three tunnel trends, and one the tunnel recycles coordination powder process as coal pulverizer exerts oneself, and one the tunnel sends into chimney row to atmosphere, and one the tunnel is sent to the pressure fan inlet.Because its temperature of weary gas of discharging from mill exhauster has about 60 ℃, therefore improved the import wind-warm syndrome of sending into air preheater from pressure fan.Prevented the cold end corrosion of the cold junction heating surface of air preheater, the utility model can reduce about 20 ℃ of exhaust gas temperatures, improves boiler efficiency about 2%, saves ignition of the boiler and helps fuel oil more than 30%, reduces mill exhauster maintenance workload and recondition expense.
Claims (1)
1, the weary gas disposal device in the station boiler pulverized coal preparation system, it is characterized in that by sack cleaner (1), secondary powder storehouse (2), auxiliary burner (3) is formed, wherein be connected with flapper (5) and wood scraps separator (4) between sack cleaner (1) and the secondary powder storehouse (2), between secondary powder storehouse (2) and the auxiliary burner (3) machine supplying powder (6) be housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96242050 CN2293724Y (en) | 1996-10-03 | 1996-10-03 | Exhaust gas treatment device in powder making system of power station boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96242050 CN2293724Y (en) | 1996-10-03 | 1996-10-03 | Exhaust gas treatment device in powder making system of power station boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2293724Y true CN2293724Y (en) | 1998-10-07 |
Family
ID=33916285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96242050 Expired - Fee Related CN2293724Y (en) | 1996-10-03 | 1996-10-03 | Exhaust gas treatment device in powder making system of power station boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2293724Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613494A (en) * | 2014-08-06 | 2015-05-13 | 上海明华电力技术工程有限公司 | Powder storage device for fast load variation of supercritical or ultra-supercritical coal-fired boiler |
-
1996
- 1996-10-03 CN CN 96242050 patent/CN2293724Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613494A (en) * | 2014-08-06 | 2015-05-13 | 上海明华电力技术工程有限公司 | Powder storage device for fast load variation of supercritical or ultra-supercritical coal-fired boiler |
| CN104613494B (en) * | 2014-08-06 | 2017-08-25 | 上海明华电力技术工程有限公司 | Storage powder device for super or ultra supercritical coal-burning boiler quick load change |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |