CN202613409U - 350 MW supercritical W-flame anthracite boiler - Google Patents
350 MW supercritical W-flame anthracite boiler Download PDFInfo
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- CN202613409U CN202613409U CN 201220266973 CN201220266973U CN202613409U CN 202613409 U CN202613409 U CN 202613409U CN 201220266973 CN201220266973 CN 201220266973 CN 201220266973 U CN201220266973 U CN 201220266973U CN 202613409 U CN202613409 U CN 202613409U
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Abstract
The utility model discloses a 350 MW supercritical W-flame anthracite boiler. Anthracite is rather complicated in combustion organization, and the combustion effect is not ideal, so that anthracite is not the first choice. The 350 MW supercritical W-flame anthracite boiler includes a boiler body (1); a water cooling wall (2) is mounted on the outer ring of the boiler body and is connected with a denitration device (18) through a flue (17); the denitration device (18) is connected with an air preheater (12); a tail flue (18) is connected with the denitration device (18); the tail flue (18) is connected with the flue (17); the water cooling wall is connected with a water storage tank (5) through a steam separator (4) and is equipped with a combustor; a second superheater (8), a finishing superheater (10), a high-temperature reheater (9) and a vertical reheater (15) are distributed in the water cooling wall; a low-temperature reheater (7), a vertical reheater (14), a first superheater (11) and a coal economizer (6) are distributed in the tail flue; the coal economizer (6) is connected with the water cooling wall (2); the water cooling wall is connected with the separator, the first superheater, the vertical superheater, the second superheater and the finishing superheater sequentially; and the low-temperature reheater is connected with the high-temperature reheater through the vertical superheater.
Description
Technical field:
the utility model relates to the overcritical W flame of a kind of 350MW anthracite-fired boiler.
Background technology:
are present, and China is domestic to be existed low-volatile colm skewness weighing apparatus and exploit unbalancedly, and early stage power plant soot is main with bituminous coal, and anthracite is organized more complicated because of burning, and combustion efficiency is desirable not to the utmost, is not preferred fuels always.Swift and violent from power plant's increase-volume so far in 2004; Capacity concentrates on subcritical, the overcritical and ultra supercritical grade unit of 600MW～1000MW; Because the cost of fuel improves with transport price and the output of coal supply falls short of demand, therefore abundant rationally utilize soft coal or anthracite, meager coal, brown coal etc. require extremely urgent.
flame boiler has bigger lower hearth, and the combustion space is big, and flame travel is long; The more wall with refractory lining, refracto of the general layout of lower hearth; Flame is double-U-shaped and the W type, and thermal-flame from bottom to top meets with the descending breeze airflow that just gets into burner hearth, helps to catch fire.Therefore, when difficulty combustion fuel such as burning anthracite, first-selected W flame boiler.
The utility model content:
The purpose of
the utility model provides a kind of efficient that can make and improves about 1.5%, and power plant efficiency improves about 0.59%, and net coal consumption rate reduces the overcritical W flame of the 350MW anthracite-fired boiler boiler about 4.23 g/kw.h.
Above-mentioned purpose realizes through following technical scheme:
the overcritical W flame of a kind of 350MW anthracite-fired boiler, its composition comprises: body of heater, water-cooling wall is equipped with in described body of heater outer ring; Described cold water wall connects denitrification apparatus through flue; Described denitrification apparatus connects air preheater, and described cold water wall connects storage tank through steam-water separator, and described cold water wall connects burner; Described cold water pars intramuralis is furnished with two-stage superheater, finishing superheater, high temperature reheater, vertical reheater from left to right successively; Described flue is equipped with low-temperature reheater, and described flue has been arranged pendant superheater, primary superheater, economizer in order, and described economizer connects described water-cooling wall; Described water-cooling wall connects separator; Described separator connects pendant superheater through connecting primary superheater, and described pendant superheater connects finishing superheater through two-stage superheater, and described low-temperature reheater connects high temperature reheater through vertical reheater.
the overcritical W flame of described 350MW anthracite-fired boiler; Described flue connects back-end ductwork; Described flue comprises the furnace outlet flue, and described furnace outlet flue connects back-end ductwork, and described back-end ductwork connects denitrification apparatus; Described denitrification apparatus is connected to the preheater gas approach; Described preheater gas approach connects air preheater, and described air preheater is contained on the steel construction of boiler organ timbering, and described cold water wall comprises vertical tube coil cold water wall and spirally-wound tubes cold water wall; Flue and rear pass before described back-end ductwork comprises, described preceding flue is equipped with low-temperature reheater, and described rear pass is equipped with pendant superheater, primary superheater, economizer in order, and described economizer connects described water-cooling wall.
the overcritical W flame of described 350MW anthracite-fired boiler; Described burner connects coal dust classifier; Described burner has light phase gas flow tube and concentrated phase gas flow tube; On the described body of heater above the described burner, be connected with the OFA airduct, on the described body of heater below the described burner, be connected with oil gun and deflector; Described burner, described coal dust classifier, described OFA airduct, described oil gun and described deflector all are equipped with in described body of heater both sides.
the overcritical W flame of described 350MW anthracite-fired boiler; Described burner adopts the single flow shade burner; Alternate single being arranged on burner hearth face arch and the back vault of coal dust spout and overfiren air port, pressure-containing parts all is suspended on the big plate-girder, and described big plate-girder is supported by four main frames; Rotary regenerative air preheater is connected on the steel construction of boiler organ timbering, and described denitrification apparatus is installed on the steel construction of boiler tail; Described body of heater ground shape is a rectangle, and it is big down little that body of heater is, and is made up of four vertical main frames; Boiler setting couples together through horizontal arrangement rigidity beam, fixes through vertical rigidity beam simultaneously.
the overcritical W flame of described 350MW anthracite-fired boiler has burner hearth in the described body of heater, and described burner hearth has coal dust spout and overfiren air port, and described furnace binding is a three-dimensional structure, and ground shape is a rectangle.
Beneficial effect:
1. the boiler pressure-containing parts of the utility model W flame-shaped all are suspended on the big plate-girder, and these big plate-girders are supported by four main frames; Rotary regenerative air preheater is installed on the steel construction of the main boiler organ timbering of linking the back; Whole boiler also is further strengthened with vertical rigidity beam through the structure of boiler self; Boiler structure is a three-dimensional structure, and ground shape is a rectangle, mainly is made up of four vertical main frames; Boiler setting couples together through horizontal arrangement rigidity beam, and fixing through vertical rigidity beam simultaneously is that the mechanism of boiler is more safe and reliable.
the utility model is independent research design, adopts autonomous intellectual property fully, has formed the exclusive boiler structure form of a cover, special burner structure and the system of safe and stable operation; This product has good social effect and market potential, is domestic first platform, product advanced in the world.
the utility model is compared with precritical bituminous coal fired boiler, and the efficient of boiler improves about 1.5%, and power plant efficiency improves about 0.59%, and net coal consumption rate reduces about 4.23 g/kw.h; With respect to subcritical boiler using brown coal, efficient, the boiler efficiency of power plant improve greatly, and net coal consumption rate reduces greatly.
The utility model is under the situation of denitrification apparatus that puts into operation, and the NOx discharge capacity can reach 200mg/Nm
3
Standard, in similar unit, maintain the leading position; With respect to Subcritical Units, consider SO
2
With NO
X
The processing and the freight charges of discharging fine and lime-ash nearly can save about 2,500,000 every year.
The utility model is for economic benefit and social benefit, if unit operation 1 year, can the fuel savings expense with respect to Subcritical Units about 3,000 ten thousand yuan,
6. the utility model are adopted layout and the boiler operatiopn aspect in novel heating surface layout, the application of heating surface material, burner arrangement, cigarette air channel and are had stronger coal and unit capacity adaptability; Heating surface specifications at different levels and heat absorption ratio are reasonable, and structure realizes easily.
Description of drawings:
accompanying drawing 1 is the mouth structure sketch map of this product.
accompanying drawing 2 is the vertical view of accompanying drawing 1.
accompanying drawing 3 is the enlarged drawing of burner in accompanying drawing 1 and the accompanying drawing 2.
accompanying drawing 4 is the left view of accompanying drawing 3.
accompanying drawing 5 is the partial view of accompanying drawing 3.
The specific embodiment:
Embodiment 1:
the overcritical W flame of 350MW anthracite-fired boiler.Its composition of the utility model comprises: body of heater 1, and water-cooling wall 2 is equipped with in described body of heater outer ring, and described cold water wall connects back-end ductwork 18 through flue 17; Described back-end ductwork connects denitrification apparatus 16, and said denitrification apparatus connects air preheater 12, and described cold water wall connects storage tank 5 through steam-water separator 4; Burner 13 is equipped with in described cold water wall bottom, and described cold water pars intramuralis is furnished with two-stage superheater 8, finishing superheater 10, high temperature reheater 9, vertical reheater 15 from left to right successively, and described back-end ductwork is divided into former and later two flues; Preceding flue has been arranged low-temperature reheater 7; Described rear pass has been arranged pendant superheater 14, primary superheater 11, economizer 6 from top to bottom, and described economizer connects described water-cooling wall, and described water-cooling wall connects separator; Described separator connects primary superheater; Described primary superheater connects pendant superheater, and described pendant superheater connects two-stage superheater, and described two-stage superheater connects finishing superheater; Described low-temperature reheater connects vertical reheater, and the vertical reheater of institute's art connects high temperature reheater.
the overcritical W flame of described 350MW anthracite-fired boiler has burner hearth in the described body of heater, and described burner hearth has coal dust spout and overfiren air port, and described furnace binding is a three-dimensional structure, and ground shape is a rectangle.
Embodiment 2:
the overcritical W flame of 350MW according to claim 1 anthracite-fired boiler; Described flue comprises furnace outlet flue 17; Described furnace outlet flue connects described back-end ductwork 18; Described back-end ductwork connects described denitrification apparatus 16, and described denitrification apparatus connects preheater gas approach 3, and described preheater gas approach connects air preheater 12; Described air preheater is contained on the steel construction of boiler organ timbering, and described cold water wall 2 comprises vertical tube coil cold water wall and spirally-wound tubes cold water wall.
Embodiment 3:
The overcritical W flame of
embodiment 1 described 350MW anthracite-fired boiler; Described burner connects coal dust classifier 19; Described burner has light phase gas flow tube and concentrated phase gas flow tube; On the described body of heater above the described burner, be connected with OFA airduct 20, on the described body of heater below the described burner, be connected with oil gun 21 and deflector 22; Described burner, described coal dust classifier, described OFA airduct, described oil gun and described deflector all are equipped with in described body of heater both sides.
Embodiment 4:
Embodiment 5:
the overcritical W flame of the described 350MW of the foregoing description anthracite-fired boiler; Foundation is from actual requirement of engineering; Rely on proprietary technology to develop the 350MW grade fully and use anthracite, join steel ball mill unit pulverized-coal system super critical boiler, this type of furnace is mainly used in and uses the anthracite unit.Require special research and development for satisfying Utilities Electric Co.'s " energy-saving and emission-reduction ", have good social effect and market potential, be domestic first platform, product advanced in the world.
An important indicator of
boiler is exactly whether heating surface moves safety, because the arrangement of heating surface, high-temperature surface is in flue-gas temperature than higher zone.Therefore, boiler heating surface rationally be chosen in the boiler design particularly important.
Claims (5)
1. the overcritical W flame of 350MW anthracite-fired boiler, its composition comprises: body of heater is characterized in that: water-cooling wall is equipped with in described body of heater outer ring; Described cold water wall connects denitrification apparatus through flue; Described denitrification apparatus connects air preheater, and described cold water wall connects storage tank through steam-water separator, and described cold water wall connects burner; Described cold water pars intramuralis is furnished with two-stage superheater, finishing superheater, high temperature reheater, vertical reheater from left to right successively; Described flue is equipped with low-temperature reheater, and described flue has been arranged pendant superheater, primary superheater, economizer in order, and described economizer connects described water-cooling wall; Described water-cooling wall connects separator; Described separator connects pendant superheater through connecting primary superheater, and described pendant superheater connects finishing superheater through two-stage superheater, and described low-temperature reheater connects high temperature reheater through vertical reheater.
2. the overcritical W flame of 350MW according to claim 1 anthracite-fired boiler; It is characterized in that: described flue connects back-end ductwork; Described flue comprises the furnace outlet flue, and described furnace outlet flue connects back-end ductwork, and described back-end ductwork connects denitrification apparatus; Described denitrification apparatus is connected to the preheater gas approach; Described preheater gas approach connects air preheater, and described air preheater is contained on the steel construction of boiler organ timbering, and described cold water wall comprises vertical tube coil cold water wall and spirally-wound tubes cold water wall; Flue and rear pass before described back-end ductwork comprises, described preceding flue is equipped with low-temperature reheater, and described rear pass is equipped with pendant superheater, primary superheater, economizer in order, and described economizer connects described water-cooling wall.
3. the overcritical W flame of 350MW according to claim 1 anthracite-fired boiler; It is characterized in that: described burner connects coal dust classifier; Described burner has light phase gas flow tube and concentrated phase gas flow tube; On the described body of heater above the described burner, be connected with the OFA airduct, on the described body of heater below the described burner, be connected with oil gun and deflector; Described burner, described coal dust classifier, described OFA airduct, described oil gun and described deflector all are equipped with in described body of heater both sides.
4. the overcritical W flame of 350MW according to claim 1 and 2 anthracite-fired boiler; It is characterized in that: described burner adopts the single flow shade burner; Alternate single being arranged on burner hearth face arch and the back vault of coal dust spout and overfiren air port, pressure-containing parts all is suspended on the big plate-girder, and described big plate-girder is supported by four main frames; Rotary regenerative air preheater is connected on the steel construction of boiler organ timbering, and described denitrification apparatus is installed on the steel construction of boiler tail; Described body of heater ground shape is a rectangle, and it is big down little that body of heater is, and is made up of four vertical main frames; Boiler setting couples together through horizontal arrangement rigidity beam, fixes through vertical rigidity beam simultaneously.
5. the overcritical W flame of 350MW according to claim 1 and 2 anthracite-fired boiler, it is characterized in that: have burner hearth in the described body of heater, described burner hearth has coal dust spout and overfiren air port, and described furnace binding is a three-dimensional structure, and ground shape is a rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220266973 CN202613409U (en) | 2012-06-08 | 2012-06-08 | 350 MW supercritical W-flame anthracite boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220266973 CN202613409U (en) | 2012-06-08 | 2012-06-08 | 350 MW supercritical W-flame anthracite boiler |
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| Publication Number | Publication Date |
|---|---|
| CN202613409U true CN202613409U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220266973 Expired - Fee Related CN202613409U (en) | 2012-06-08 | 2012-06-08 | 350 MW supercritical W-flame anthracite boiler |
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| CN (1) | CN202613409U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679309A (en) * | 2012-06-08 | 2012-09-19 | 哈尔滨锅炉厂有限责任公司 | 350MW supercritical W flame anthracite boiler |
| CN103115353A (en) * | 2013-03-04 | 2013-05-22 | 章礼道 | Half-W-shaped flame burning supercritical power station boiler |
-
2012
- 2012-06-08 CN CN 201220266973 patent/CN202613409U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679309A (en) * | 2012-06-08 | 2012-09-19 | 哈尔滨锅炉厂有限责任公司 | 350MW supercritical W flame anthracite boiler |
| CN102679309B (en) * | 2012-06-08 | 2015-11-18 | 哈尔滨锅炉厂有限责任公司 | 350MW MW supercritical W flame anthracite boiler |
| CN103115353A (en) * | 2013-03-04 | 2013-05-22 | 章礼道 | Half-W-shaped flame burning supercritical power station boiler |
| CN103115353B (en) * | 2013-03-04 | 2015-06-17 | 章礼道 | Half-W-shaped flame burning supercritical power station boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20160608 |
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| CF01 | Termination of patent right due to non-payment of annual fee |