CN102679309A - 350MW supercritical W flame anthracite boiler - Google Patents
350MW supercritical W flame anthracite boiler Download PDFInfo
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- CN102679309A CN102679309A CN201210186250XA CN201210186250A CN102679309A CN 102679309 A CN102679309 A CN 102679309A CN 201210186250X A CN201210186250X A CN 201210186250XA CN 201210186250 A CN201210186250 A CN 201210186250A CN 102679309 A CN102679309 A CN 102679309A
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Abstract
The invention relates to a 350MW supercritical W flame anthracite boiler. Anthracite is complex in burning tissue and is unsatisfactory in burning effect, so that the anthracite is not the firstly selected fuel all the time. The 350MW supercritical W flame anthracite boiler comprises a furnace body (1), wherein a water-cooling wall (2) is arranged on the outer circle of the furnace body; the furnace body (1) is connected with a tail flue (18), a denitration device (16) and an air pre-heater (12) through a flue (17); the water-cooling wall is connected with a water tank (5) through a steam separator (4); a burner (13) is arranged on the water-cooling wall; a secondary super-heater (8), a finishing super-heater (10), a high-temperature re-heater (9) and a vertical re-heater (15) are arranged on the water-cooling wall; a lower-temperature re-heater (7), a vertical super-heater (14), a first super-heater (11) and an economizer (6) are distributed on the tail flue; the water-cooling wall is connected with the separator and the first, vertical, secondary and finishing super-heaters in sequence; and the lower-temperature re-heater is connected with the vertical re-heater and the high-temperature re-heater. The anthracite is applied to the 350MW supercritical W flame anthracite boiler.
Description
Technical field:
the present invention 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.
[0004] summary of the invention:
the purpose of this invention is to provide a kind of efficient that can make and improve 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:
The boiler pressure-containing parts of
W flame type 1. of the present invention all is 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 W 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 present invention 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 present invention compare 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 present invention 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 present invention 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 novel heating surface layout of the present invention, the application of heating surface material, burner arrangement, cigarette air channel layout and boiler operatiopn aspect and have 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 present invention 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.
The boiler hydrodynamics research and development
According to the characteristics that W flame boiler water-cooling wall is arranged, water-cooling wall is studied from the following aspects:
1) the multistage uneven loop flow distribution calculation method of being heated has been proposed;
2) worked out water-cooling wall Calculation of Hydrodynamic program;
3) having accomplished the hydrodynamic characterisitic under the different circuit calculates;
4) study the steam temperature that water-cooling wall exports under the different operating modes and distributed, managed interior quality velocity flow profile, drooping characteristic and wall temperature characteristic;
5) hydrodynamic ambiguity under the underrun is analyzed.
to the design feature of W flame boiler furnace, were developed the Calculation of Hydrodynamic program, and each design conditions have been checked in the hydrodynamic while of research, guaranteed that hydrodynamic force is safe and reliable.
One of them index of the safe operation of
this product unit 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, rationally being chosen in the boiler design of boiler heating surface is particularly important, but the mainly dependence calculation of Wall Temperature program of choosing at present of boiler heating surface.
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 and 2 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 is characterized in that: the burner hearth in the described body of heater 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 |
|---|---|---|---|
| CN201210186250.XA CN102679309B (en) | 2012-06-08 | 2012-06-08 | 350MW MW supercritical W flame anthracite boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210186250.XA CN102679309B (en) | 2012-06-08 | 2012-06-08 | 350MW MW supercritical W flame anthracite boiler |
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| Publication Number | Publication Date |
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| CN102679309A true CN102679309A (en) | 2012-09-19 |
| CN102679309B CN102679309B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210186250.XA Active CN102679309B (en) | 2012-06-08 | 2012-06-08 | 350MW MW supercritical W flame anthracite boiler |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247321A (en) * | 2016-07-29 | 2016-12-21 | 东方电气集团东方锅炉股份有限公司 | A kind of W flame boiler for deeply denitration combustion method |
| CN106247320B (en) * | 2016-07-29 | 2018-08-24 | 东方电气集团东方锅炉股份有限公司 | A kind of opposed firing boiler depth denitration combustion method |
| CN112682771A (en) * | 2020-12-28 | 2021-04-20 | 东方电气集团东方锅炉股份有限公司 | W-shaped flame double-reheating ultra-supercritical boiler and steam temperature adjusting method |
Citations (4)
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|---|---|---|---|---|
| CN1118856A (en) * | 1994-09-16 | 1996-03-20 | 清华大学 | Concentrated coal powder straight flow burner |
| CN102128443A (en) * | 2011-03-08 | 2011-07-20 | 中国华能集团清洁能源技术研究院有限公司 | Pulverized coal boiler suitable for ultrahigh steam temperature |
| CN102434870A (en) * | 2011-12-21 | 2012-05-02 | 哈尔滨锅炉厂有限责任公司 | 350MW supercritical tower-type lignite boiler |
| CN202613409U (en) * | 2012-06-08 | 2012-12-19 | 哈尔滨锅炉厂有限责任公司 | 350 MW supercritical W-flame anthracite boiler |
-
2012
- 2012-06-08 CN CN201210186250.XA patent/CN102679309B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1118856A (en) * | 1994-09-16 | 1996-03-20 | 清华大学 | Concentrated coal powder straight flow burner |
| CN102128443A (en) * | 2011-03-08 | 2011-07-20 | 中国华能集团清洁能源技术研究院有限公司 | Pulverized coal boiler suitable for ultrahigh steam temperature |
| CN102434870A (en) * | 2011-12-21 | 2012-05-02 | 哈尔滨锅炉厂有限责任公司 | 350MW supercritical tower-type lignite boiler |
| CN202613409U (en) * | 2012-06-08 | 2012-12-19 | 哈尔滨锅炉厂有限责任公司 | 350 MW supercritical W-flame anthracite boiler |
Non-Patent Citations (1)
| Title |
|---|
| 赵彦华: "超临界W火焰锅炉开发研制及技术特点", 《电站系统工程》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247321A (en) * | 2016-07-29 | 2016-12-21 | 东方电气集团东方锅炉股份有限公司 | A kind of W flame boiler for deeply denitration combustion method |
| CN106247320B (en) * | 2016-07-29 | 2018-08-24 | 东方电气集团东方锅炉股份有限公司 | A kind of opposed firing boiler depth denitration combustion method |
| CN112682771A (en) * | 2020-12-28 | 2021-04-20 | 东方电气集团东方锅炉股份有限公司 | W-shaped flame double-reheating ultra-supercritical boiler and steam temperature adjusting method |
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| Publication number | Publication date |
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| CN102679309B (en) | 2015-11-18 |
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