CN104061565A - Zhundong coal-burning ultra-supercritical power station boiler - Google Patents
Zhundong coal-burning ultra-supercritical power station boiler Download PDFInfo
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- CN104061565A CN104061565A CN201410302005.XA CN201410302005A CN104061565A CN 104061565 A CN104061565 A CN 104061565A CN 201410302005 A CN201410302005 A CN 201410302005A CN 104061565 A CN104061565 A CN 104061565A
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Abstract
The invention discloses a Zhundong coal-burning ultra-supercritical power station boiler, and relates to an ultra-supercritical power station boiler which is used by thermal power stations and can safely, economically and fully burn Zhundong coal for a long term. The Zhundong coal-burning ultra-supercritical power station boiler comprises a furnace burner, a platen superheater, a high-temperature superheater, a high-temperature reheater, a low-temperature reheater, a low-temperature superheater, a smoke deflecting corner, an air-smoke ejector shutoff baffle, a temperature-regulating air-smoke ejector, an ejector shutoff protecting cooling air baffle, a separate secondary air bellows, an economizer, an ejector heat primary air regulation baffle, a front flue gas regulation baffle, a rear flue gas regulation baffle, a supersonic steam flow nozzle, a supersonic steam flow nozzle-positioning nest plate, roof tubes and roof tube fins. The ejector heat primary air regulation baffle is opened when low load and/or the fouling factor of the reheaters are increased in the boiler, and the weight flow of a temperature-regulating smoke-air mixture can be regulated between 0 and 30 percent of BMCR (Boiler Maximum Continuous Rating) flue gas weight flow; a high-directivity supersonic flow steam soot-blowing system is arranged on a roof; the Zhundong coal-burning ultra-supercritical power station boiler solves the problem that the ultra-supercritical power station boiler of the prior art cannot safely, economically and fully burn Zhundong coal for a long term.
Description
(1) technical field:
What the ultra supercritical station boiler that the present invention uses accurate eastern coal related to that a kind of thermal power station uses can be for a long time, safety, economy, use the ultra supercritical station boiler of accurate eastern coal completely.
(2) background technology:
The ultra supercritical station boiler that prior art thermal power station is used is for the Turbo-generator Set steam supply to ultra supercritical, and the design load of the typical main stripping temperature/reheat steam temperature of boiler side degree is 605 DEG C/623 DEG C.
The Turbo-generator Set of typical ultra supercritical is furnished with three grades of high-pressure heaters and the steam condenser separating, and boiler feed temperature is up to 300 DEG C; 361 DEG C of the steam inlet temperature of low-temperature reheater.
The main steam method of temperature control of prior art: coal-water ratio+spray desuperheating+swing burner, can guarantee that superheated steam outlet temperature all can reach 605 DEG C under 30%～100%BMCR operating mode; Reheated steam method of temperature control: gas baffle+tilting burner, can guarantee that reheated steam outlet temperature can reach 623 DEG C under 65%～100%BMCR operating mode; In order to control Boiler Furnace slagging, the ultra supercritical Power Boilers Design that uses accurate eastern coal is selected low-down furnace volume heat release rate conventionally, and gas baffle+tilting burner, under 50%～65%BMCR operating mode, is difficult to make reheated steam outlet temperature to reach design load; Using accurate eastern coal high temperature convection heating surface and half radiation heating-surface has serious inclination to soiling, is difficult to long period and keeps reheat steam temperature to reach 623 DEG C; Overheating steam temperature reaches 605 DEG C.
Accurate eastern coalfield is the super-huge coalfield that is positioned at Xinjiang, and prognostic reserves reach 3900 × 10
8t, cost of winning is cheap.Moisture, the volatile matter of accurate eastern coal are higher, and ash content, sulphur content are very low, and calorific value is medium, and typical accurate eastern coal Na content 5.11% to 7.15%, has very strong clinkering property and fouling characteristics, and what wherein show with heating surface fouling characteristics is particularly outstanding.
The station boiler of prior art burns accurate eastern coal 40% when above mixing, and starts to occur hearth combustor region Serious Slagging; Pendant superheater, high temperature superheater, high temperature reheater cigarette side are stain, stop up, are corroded; Exhaust gas temperature raises, degradation phenomenon under on-load ability.When serious, the station boiler of prior art is forced to shutdown maintenance.
The major measure that the station boiler of prior art uses safely accurate eastern coal is to strengthen power station heap, coal blending management; Rationally control the mixed-fuel burning proportion of accurate eastern coal.There is no long-term, safe, to use accurate eastern coal completely record.
If the station boiler of 2 600MW grades is changed into and is burnt accurate eastern coal completely by the standard east coal of mixing 40% ratio of burning, due to the huge price difference between the eastern coal of standard and well work coal, approximately 1.8 hundred million yuan of Spring Festival holidays fuel consumption conservations.
Prior art there is no the achievement of the accurate eastern coal of ultra supercritical boilers of power plants.
The station boiler of prior art burns accurate eastern coal 40% when above mixing, and occurs that the slagging scorification of hearth combustor region is serious; Pendant superheater, high temperature superheater, high temperature reheater cigarette side are stain and are stopped up corrosion; Exhaust gas temperature raises, degradation phenomenon under on-load ability.The station boiler that solves prior art can not be for a long time, safe, the problem that uses accurate eastern coal completely.
Solve the technical scheme that its technical problem adopts:
The object of this invention is to provide a kind of ultra supercritical station boiler that uses accurate eastern coal and take technology path unlike the prior art, the ultra supercritical station boiler that solves prior art can not be for a long time, safety, economy, use the problem of accurate eastern coal completely.
The ultra supercritical station boiler that the present invention uses accurate eastern coal comprises burner hearth and burner (1), pendant superheater (2), high temperature superheater (3), high temperature reheater (4), low-temperature reheater (5), low temperature superheater (6), smoke folded angle (7), wind-cigarette injector turn-offs plate washer (8), temperature adjustment wind-cigarette injector (9), injector Shut-down Protection cooling air baffle plate (10), separated secondary wind bellows (11), economizer (12), injector heat primary air controllable register (13), front flue gas controllable register (14), rear pass gas proportioning damper (15), supersonic speed steam flow nozzle (16), supersonic speed steam flow nozzle location cage plate (17), roof tube (18), roof tube fin (19), back-end ductwork is divided into front flue, rear pass by dividing wall, and the heating surface of arranging in twin flue all adopts supporting construction, in front flue, arrange low-temperature reheater (5) and economizer (12), in rear pass, arrange low temperature superheater (6) and economizer (12), front flue outlet arranges front flue gas controllable register (14), and rear pass outlet arranges rear pass gas proportioning damper (15), the flue gas suction inlet of temperature adjustment wind-cigarette injector (9) is arranged on the front wall of front flue, and cigarette wind mixture outlet is arranged on the bottom of smoke folded angle (7), in the time of high, the middle load of boiler, the caloric receptivity that before regulating, flue gas controllable register (14) and rear pass gas proportioning damper (15) are controlled between low temperature superheater (6) and low-temperature reheater (5) distributes, and makes the gentle overheating steam temperature of hot gas reach rated value again, in boiler, when underload and/or high temperature reheater (4) fouling factor increases, heat primary air enters temperature adjustment wind-cigarette injector (9) through injector heat primary air controllable register (13), open wind-cigarette injector and turn-off plate washer (8), suction flue gas from low-temperature reheater (5), cigarette wind mixture enters boiler furnace in smoke folded angle (7) bottom, cigarette wind mixture changes the ratio of the interior Radiant exothermicity of burner hearth and the quantity of heat convection, increase flue gas volume flow, the caloric receptivity that increases low-temperature reheater (5) improves reheat steam temperature, controlling injector heat primary air controllable register (13) aperture makes reheat steam temperature operate in rated value, after cigarette wind mixture mixes with burner hearth high temperature main smoke airflow, not only effectively reduce the gentle furnace outlet gas temperature of screen end cigarette, also effectively reduce the caloric receptivity of pendant superheater (2), the quantity of temperature adjustment wind-cigarette injector (9) is identical with the quantity that separated secondary wind nozzle one is arranged, temperature adjustment wind-cigarette injector (9) can drop into one by one, under DCS controls, change input order and input number along stove cross direction temperature adjustment wind-cigarette injector (9), can compensate, reduce high temperature superheater (3) and high temperature reheater (4) thermal deviation along stove cross direction, when temperature adjustment wind-cigarette injector (9) is stopped transport, close wind-cigarette injector shutoff plate washer (8) and open injector Shut-down Protection cooling air baffle plate (10), arrange the strong supersonic speed steam flow Steam Soot-Blower System that points at ceiling, control lasting blowing time and the interval time of each group of supersonic speed steam flow nozzle, can further compensate the thermal deviation of each high-temperature surface, burner hearth is selected low volume calorific intensity, from most row's burner to start to spray to the water-cooling wall pipe of burner hearth of separated secondary wind mentioned nozzle area the nickel-base alloy protective layer that resistance to fume high-temperature corrodes, high temperature superheater (3), high temperature reheater (4), adopt large transverse pitch, improve the anti-cigarette side blocking ability of each high-temperature surface, pendant superheater (2), high temperature superheater (3), high temperature reheater (4) all use the heat-resisting austenitic stainless steel that oxidation resistance is strong.
The beneficial effect of the invention:
Solution prior art uses the ultra supercritical Power Boilers Design of accurate eastern coal and conventionally selects low-down furnace volume heat release rate, and gas baffle+tilting burner, under 50%～65%BMCR operating mode, is difficult to make reheated steam outlet temperature to reach design load;
The thermal capacity that has increased the empty side of air preheater, exhaust gas temperature is downward trend;
Carry out cooled flue gas and avoid the condensing loss of steam turbine to increase without introduce condensate water and/or the lower feedwater of temperature from steam turbine side;
Can save the huge investment of the low-pressure coal saver after bypass economizer and/or the preheater of air preheater;
With the alternative division pendant superheater with high radiation character of low temperature superheater being arranged in afterbody rear pass, the excessive radiation characteristic of prior art superheater system is significantly liquidated;
More wide in range reheat steam temperature deferrable load interval, can maintain reheat steam temperature at 623 DEG C, without water spray in 40% to 100%BMCR interval;
Solve the serious and high-temperature surface of the accurate eastern coal stove thorax burner region slagging scorification of boilers of power plants of prior art and stain serious problem;
Reduce furnace outlet gas temperature, screen end temperature and very low combustion space heating strength and make the interior radiation heating-surface slagging scorification contamination of burner hearth situation controlled, dust stratification is easy to be pointed to by force supersonic speed steam flow Steam Soot-Blower System and removes;
The circulation of low Na ash declines the apparent equivalent Na index of accurate eastern coal, makes the cigarette side of pendant superheater, high temperature superheater, high temperature reheater stain obstruction controlled process;
Pendant superheater, high temperature superheater, high temperature reheater all use the strong heat-resisting austenitic stainless steel of oxidation resistance, make cigarette side corrosion process and pipe inner side oxidizing process controlled;
Supersonic speed steam flow nozzle has high nozzle velocity coefficient, more effectively the high enthalpy of steam is converted to speed energy;
Without steam pressure-reducing station without entropy increasing process, supersonic speed steam flow nozzle can obtain higher usable enthalpy drop, supersonic speed steam flow jet expansion flow velocity can exceed 1200m/s, and the kinetic energy that same quality steam has is than the high order of magnitude of the long stroke steam sootblower of prior art;
Supersonic speed steam flow nozzle has highly directive, is arranged in supersonic speed steam flow nozzle sets on boiler ceiling and is particularly suitable for getting through the dust stratification of bridging type between heating surface;
Change input order and input number along stove cross direction temperature adjustment wind-cigarette injector, can compensate, reduce high temperature superheater and the high temperature reheater thermal deviation along stove cross direction;
Control lasting blowing time and the interval time of each group of supersonic speed steam flow nozzle, can further compensate the thermal deviation of each high-temperature surface;
Lower thermal deviation is effectively alleviated the inner side oxide skin generative process of each high-temperature surface;
The ultra supercritical station boiler that the present invention uses accurate eastern coal also can be used for using that other ash fusion point is low, the ultra supercritical station boiler of clinker(ing) coal kind.
(3) summary of the invention:
Technical problem to be solved:
In order to control Boiler Furnace slagging, the ultra supercritical Power Boilers Design that uses accurate eastern coal is selected low-down furnace volume heat release rate conventionally, and gas baffle+tilting burner, under 50%～65%BMCR operating mode, is difficult to make reheated steam outlet temperature to reach design load; Using accurate eastern coal high temperature convection heating surface and half radiation heating-surface has serious inclination to soiling, is difficult to long period and keeps reheat steam temperature to reach 623 DEG C; Overheating steam temperature reaches 605 DEG C.
(4) brief description of the drawings:
Fig. 1 is the ultra supercritical station boiler scheme that uses accurate eastern coal.
Fig. 2 is the location and installation figure of supersonic speed steam flow nozzle on roof tube.
In Fig. 1 and Fig. 2:
1 burner hearth and burner, 2 pendant superheaters,
3 high temperature superheaters, 4 high temperature reheaters,
5 low-temperature reheaters, 6 low temperature superheaters,
7 smoke folded angles, 8 wind-cigarette injector turn-off plate washer,
9 temperature adjustment wind-cigarette injectors, 10 injector Shut-down Protection cooling air baffle plates,
11 separated secondary wind bellows, 12 economizers,
13 injector heat primary air controllable registers, 14 front flue gas controllable registers,
15 rear pass gas proportioning dampers, 16 supersonic speed steam flow nozzles,
17 supersonic speed steam flow nozzles location cage plates, 18 roof tubes,
19 roof tube fins.
(5) detailed description of the invention:
Now in conjunction with Fig. 1 and Fig. 2 with a 600MW grade, the ultra supercritical ∏ type station boiler that main stripping temperature/reheat steam temperature degree is 605 DEG C/623 DEG C is that example explanation realizes optimal way of the present invention.
The ultra supercritical station boiler that the present invention uses accurate eastern coal comprises burner hearth and burner (1), pendant superheater (2), high temperature superheater (3), high temperature reheater (4), low-temperature reheater (5), low temperature superheater (6), smoke folded angle (7), wind-cigarette injector turn-offs plate washer (8), temperature adjustment wind-cigarette injector (9), injector Shut-down Protection cooling air baffle plate (10), separated secondary wind bellows (11), economizer (12), injector heat primary air controllable register (13), front flue gas controllable register (14), rear pass gas proportioning damper (15), supersonic speed steam flow nozzle (16), supersonic speed steam flow nozzle location cage plate (17), roof tube (18), roof tube fin (19), back-end ductwork is divided into front flue, rear pass by dividing wall, and the heating surface of arranging in twin flue all adopts supporting construction, in front flue, arrange low-temperature reheater (5) and economizer (12), in rear pass, arrange low temperature superheater (6) and economizer (12), front flue outlet arranges front flue gas controllable register (14), and rear pass outlet arranges rear pass gas proportioning damper (15), the flue gas suction inlet of temperature adjustment wind-cigarette injector (9) is arranged on the front wall of front flue, and cigarette wind mixture outlet is arranged on the bottom of smoke folded angle (7), in the time of high, the middle load of boiler, the caloric receptivity that before regulating, flue gas controllable register (14) and rear pass gas proportioning damper (15) are controlled between low temperature superheater (6) and low-temperature reheater (5) distributes, and makes the gentle overheating steam temperature of hot gas reach rated value again, in boiler, when underload and/or high temperature reheater (4) fouling factor increases, heat primary air enters temperature adjustment wind-cigarette injector (9) through injector heat primary air controllable register (13), open wind-cigarette injector and turn-off plate washer (8), suction flue gas from low-temperature reheater (5), cigarette wind mixture enters boiler furnace in smoke folded angle (7) bottom, cigarette wind mixture changes the ratio of the interior Radiant exothermicity of burner hearth and the quantity of heat convection, increase flue gas volume flow, the caloric receptivity that increases low-temperature reheater (5) improves reheat steam temperature, controlling injector heat primary air controllable register (13) aperture makes reheat steam temperature operate in rated value, after cigarette wind mixture mixes with burner hearth high temperature main smoke airflow, not only effectively reduce the gentle furnace outlet gas temperature of screen end cigarette, also effectively reduce the caloric receptivity of pendant superheater (2), the quantity of temperature adjustment wind-cigarette injector (9) is identical with the quantity that separated secondary wind nozzle one is arranged, temperature adjustment wind-cigarette injector (9) can drop into one by one, under DCS controls, change input order and input number along stove cross direction temperature adjustment wind-cigarette injector (9), can compensate, reduce high temperature superheater (3) and high temperature reheater (4) thermal deviation along stove cross direction, when temperature adjustment wind-cigarette injector (9) is stopped transport, close wind-cigarette injector shutoff plate washer (8) and open injector Shut-down Protection cooling air baffle plate (10), arrange the strong supersonic speed steam flow Steam Soot-Blower System that points at ceiling, control lasting blowing time and the interval time of each group of supersonic speed steam flow nozzle, can further compensate the thermal deviation of each high-temperature surface, burner hearth is selected low volume calorific intensity, from most row's burner to start to spray to the water-cooling wall pipe of burner hearth of separated secondary wind mentioned nozzle area the nickel-base alloy protective layer that resistance to fume high-temperature corrodes, high temperature superheater (3), high temperature reheater (4), adopt large transverse pitch, improve the anti-cigarette side blocking ability of each high-temperature surface, pendant superheater (2), high temperature superheater (3), high temperature reheater (4) all use the heat-resisting austenitic stainless steel that oxidation resistance is strong.
Burner hearth and burner (1) use spiral-flow type low NO, each 3 layers of forward and backward wall, every layer of 6 spiral-flow type low NO; Burner top, upper strata 6m to 10m is furnished with 2 layers of separated secondary wind nozzle, 8 every layer; Combustion space heating strength 50kW/m
3to 60kW/m
3;
It is 35% of the full degree of depth of burner hearth that smoke folded angle (6) probes into furnace depth, and under smoke folded angle, the angle of hypotenuse and vertical line is 35 ° to 40 °, and on smoke folded angle, the angle of hypotenuse and vertical line is 70 ° to 75 °.
The jet flue gas recirculation system of comprise temperature adjustment wind-cigarette injector (9), control injector heat primary air controllable register (13), injector Shut-down Protection cooling air baffle plate (10), wind-cigarette injector turn-offing plate washer (8) is arranged 8 covers along stove cross direction, corresponding with the number of every layer of separated secondary wind nozzle.
Temperature adjustment wind-cigarette injector interface section (9) and burner hearth are used high temperature resistant, oxidation resistant stainless steel; It is double disc structure that wind-cigarette injector turn-offs plate washer (8), uses high temperature resistant, oxidation resistant stainless steel to make; The smoke inlet of temperature adjustment wind-cigarette injector (9) is truncated cone shape; The outlet of temperature adjustment wind-cigarette injector (9) is positioned at the root of smoke folded angle (7), the not slagging scorification of lower inclined plane of protection smoke folded angle (7), the contamination situation of control pendant superheater (2); The weight flow of temperature adjustment cigarette wind mixture 0 to BMCR flue gas weight flow 30% between adjustable.
Supersonic speed steam flow nozzle (19) has highly directive, is arranged in supersonic speed steam flow nozzle sets on boiler ceiling and is particularly suitable for getting through the dust stratification of bridging type between heating surface.
(2) 12 of pendant superheaters are evenly arranged along stove cross direction, (19) 24, configuration supersonic speed steam flow nozzle.
(4) 48 of high temperature superheaters are evenly arranged along stove cross direction, (19) 49, configuration supersonic speed steam flow nozzle.
(5) 64 of high temperature reheaters are evenly arranged along stove cross direction, (19) 65, configuration supersonic speed steam flow nozzle.
Supersonic speed steam flow nozzle (19) uses low-temperature reheater outlet steam, BMCR operating mode 5.63MPa516 DEG C, 50%THA operating mode 2.73MPa528 DEG C, 2.24MPa520 DEG C of 30%THA operating mode, without pressure-reducing station, has higher enthalpy value (3464kJ/kg to 3522kJ/kg) to obtain hypersonic speed steam flow.
Claims (6)
1. one kind uses the ultra supercritical station boiler of accurate eastern coal, it is characterized in that: comprise burner hearth and burner (1), pendant superheater (2), high temperature superheater (3), high temperature reheater (4), low-temperature reheater (5), low temperature superheater (6), smoke folded angle (7), wind-cigarette injector turn-offs plate washer (8), temperature adjustment wind-cigarette injector (9), injector Shut-down Protection cooling air baffle plate (10), separated secondary wind bellows (11), economizer (12), injector heat primary air controllable register (13), front flue gas controllable register (14), rear pass gas proportioning damper (15), supersonic speed steam flow nozzle (16), supersonic speed steam flow nozzle location cage plate (17), roof tube (18), roof tube fin (19), back-end ductwork is divided into front flue, rear pass by dividing wall, and the heating surface of arranging in twin flue all adopts supporting construction, in front flue, arrange low-temperature reheater (5) and economizer (12), in rear pass, arrange low temperature superheater (6) and economizer (12), front flue outlet arranges front flue gas controllable register (14), and rear pass outlet arranges rear pass gas proportioning damper (15), the flue gas suction inlet of temperature adjustment wind-cigarette injector (9) is arranged on the front wall of front flue, and cigarette wind mixture outlet is arranged on the bottom of smoke folded angle (7), in the time of high, the middle load of boiler, the caloric receptivity that before regulating, flue gas controllable register (14) and rear pass gas proportioning damper (15) are controlled between low temperature superheater (6) and low-temperature reheater (5) distributes, and makes the gentle overheating steam temperature of hot gas reach rated value again, in boiler, when underload and/or high temperature reheater (4) fouling factor increases, heat primary air enters temperature adjustment wind-cigarette injector (9) through injector heat primary air controllable register (13), open wind-cigarette injector and turn-off plate washer (8), suction flue gas from low-temperature reheater (5), cigarette wind mixture enters boiler furnace in smoke folded angle (7) bottom, cigarette wind mixture changes the ratio of the interior Radiant exothermicity of burner hearth and the quantity of heat convection, increase flue gas volume flow, the caloric receptivity that increases low-temperature reheater (5) improves reheat steam temperature, controlling injector heat primary air controllable register (13) aperture makes reheat steam temperature operate in rated value, after cigarette wind mixture mixes with burner hearth high temperature main smoke airflow, not only effectively reduce the gentle furnace outlet gas temperature of screen end cigarette, also effectively reduce the caloric receptivity of pendant superheater (2), the quantity of temperature adjustment wind-cigarette injector (9) is identical with the quantity that separated secondary wind nozzle one is arranged, temperature adjustment wind-cigarette injector (9) can drop into one by one, under DCS controls, change input order and input number along stove cross direction temperature adjustment wind-cigarette injector (9), can compensate, reduce high temperature superheater (3) and high temperature reheater (4) thermal deviation along stove cross direction, when temperature adjustment wind-cigarette injector (9) is stopped transport, close wind-cigarette injector shutoff plate washer (8) and open injector Shut-down Protection cooling air baffle plate (10), arrange the strong supersonic speed steam flow Steam Soot-Blower System that points at ceiling, control lasting blowing time and the interval time of each group of supersonic speed steam flow nozzle, can further compensate the thermal deviation of each high-temperature surface, burner hearth is selected low volume calorific intensity, from most row's burner to start to spray to the water-cooling wall pipe of burner hearth of separated secondary wind mentioned nozzle area the nickel-base alloy protective layer that resistance to fume high-temperature corrodes, high temperature superheater (3), high temperature reheater (4), adopt large transverse pitch, improve the anti-cigarette side blocking ability of each high-temperature surface, pendant superheater (2), high temperature superheater (3), high temperature reheater (4) all use the heat-resisting austenitic stainless steel that oxidation resistance is strong.
2. a kind of ultra supercritical station boiler that uses accurate eastern coal according to claim 1, is characterized in that described burner hearth and burner (1) use spiral-flow type low NO, each 3 layers of forward and backward wall, every layer of 6 spiral-flow type low NO; Burner top, upper strata 6m to 10m is furnished with 2 layers of separated secondary wind nozzle, 8 every layer.
3. a kind of ultra supercritical station boiler that uses accurate eastern coal according to claim 1, it is characterized in that it is 35% of the full degree of depth of burner hearth that described smoke folded angle (6) probes into furnace depth, under smoke folded angle, the angle of hypotenuse and vertical line is 35 ° to 40 °, and on smoke folded angle, the angle of hypotenuse and vertical line is 70 ° to 75 °.
4. a kind of ultra supercritical station boiler that uses accurate eastern coal according to claim 1; it is characterized in that the described jet flue gas recirculation system that comprises temperature adjustment wind-cigarette injector (9), control injector heat primary air controllable register (13), injector Shut-down Protection cooling air baffle plate (10), wind-cigarette injector shutoff plate washer (8) is along stove cross direction layout 8 covers, corresponding with the number of every layer of separated secondary wind nozzle.
5. a kind of ultra supercritical station boiler that uses accurate eastern coal according to claim 1, is characterized in that described temperature adjustment wind-cigarette injector interface section (9) and burner hearth are used high temperature resistant, oxidation resistant stainless steel; It is double disc structure that wind-cigarette injector turn-offs plate washer (8), uses high temperature resistant, oxidation resistant stainless steel to make; The smoke inlet of temperature adjustment wind-cigarette injector (9) is truncated cone shape; The outlet of temperature adjustment wind-cigarette injector (9) is positioned at the root of smoke folded angle (7), the not slagging scorification of lower inclined plane of protection smoke folded angle (7), the contamination situation of control pendant superheater (2); The weight flow of temperature adjustment cigarette wind mixture 0 to BMCR flue gas weight flow 30% between adjustable.
6. a kind of ultra supercritical station boiler that uses accurate eastern coal according to claim 1, it is characterized in that described supersonic speed steam flow nozzle (19) has highly directive, be arranged in supersonic speed steam flow nozzle sets on boiler ceiling and be particularly suitable for getting through the dust stratification of bridging type between heating surface.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105627283A (en) * | 2016-01-20 | 2016-06-01 | 华能国际电力股份有限公司 | Steam system suitable for power station boiler with steam parameter of 700 DEG C grade and above |
| CN108534119A (en) * | 2018-06-19 | 2018-09-14 | 哈尔滨锅炉厂有限责任公司 | One kind using the accurate eastern coal 660MW tangential firing super critical boilers in Xinjiang |
| CN108692305A (en) * | 2018-06-19 | 2018-10-23 | 哈尔滨锅炉厂有限责任公司 | One kind using the accurate eastern coal 660MW tangential firing ultra-supercritical boilers in Xinjiang |
| CN108758600A (en) * | 2018-06-26 | 2018-11-06 | 哈尔滨锅炉厂有限责任公司 | One kind using the accurate eastern coal 660MW opposed firing super critical boilers in Xinjiang |
| CN108775572A (en) * | 2018-07-25 | 2018-11-09 | 哈尔滨锅炉厂有限责任公司 | Suitable for using the medium-pressure boiler of the accurate eastern coal in Xinjiang |
| CN112628709A (en) * | 2020-12-28 | 2021-04-09 | 东方电气集团东方锅炉股份有限公司 | Super (super) critical W-shaped flame boiler |
| CN112696653A (en) * | 2020-05-21 | 2021-04-23 | 东方电气集团东方锅炉股份有限公司 | Boiler with sectional type hearth |
| CN113958947A (en) * | 2021-11-10 | 2022-01-21 | 西安热工研究院有限公司 | Method for determining key size of 1000 MW-grade east-west high-sodium coal boiler furnace |
| CN114754345A (en) * | 2022-04-24 | 2022-07-15 | 西安热工研究院有限公司 | Boiler and thermal power generating unit with baffle plate assembly |
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| CN105627283A (en) * | 2016-01-20 | 2016-06-01 | 华能国际电力股份有限公司 | Steam system suitable for power station boiler with steam parameter of 700 DEG C grade and above |
| CN105627283B (en) * | 2016-01-20 | 2017-12-05 | 华能国际电力股份有限公司 | It is 700 DEG C of grades and the vapour system of above station boiler suitable for steam parameter |
| CN108534119A (en) * | 2018-06-19 | 2018-09-14 | 哈尔滨锅炉厂有限责任公司 | One kind using the accurate eastern coal 660MW tangential firing super critical boilers in Xinjiang |
| CN108692305A (en) * | 2018-06-19 | 2018-10-23 | 哈尔滨锅炉厂有限责任公司 | One kind using the accurate eastern coal 660MW tangential firing ultra-supercritical boilers in Xinjiang |
| CN108758600A (en) * | 2018-06-26 | 2018-11-06 | 哈尔滨锅炉厂有限责任公司 | One kind using the accurate eastern coal 660MW opposed firing super critical boilers in Xinjiang |
| CN108775572A (en) * | 2018-07-25 | 2018-11-09 | 哈尔滨锅炉厂有限责任公司 | Suitable for using the medium-pressure boiler of the accurate eastern coal in Xinjiang |
| CN112696653A (en) * | 2020-05-21 | 2021-04-23 | 东方电气集团东方锅炉股份有限公司 | Boiler with sectional type hearth |
| CN112628709A (en) * | 2020-12-28 | 2021-04-09 | 东方电气集团东方锅炉股份有限公司 | Super (super) critical W-shaped flame boiler |
| CN113958947A (en) * | 2021-11-10 | 2022-01-21 | 西安热工研究院有限公司 | Method for determining key size of 1000 MW-grade east-west high-sodium coal boiler furnace |
| CN113958947B (en) * | 2021-11-10 | 2024-04-19 | 西安热工研究院有限公司 | Method for determining critical dimension of 1000 MW-level quasi-east high-sodium coal boiler furnace |
| CN114754345A (en) * | 2022-04-24 | 2022-07-15 | 西安热工研究院有限公司 | Boiler and thermal power generating unit with baffle plate assembly |
| CN114754345B (en) * | 2022-04-24 | 2024-05-24 | 西安热工研究院有限公司 | Boiler and thermal power generating unit with baffle assembly |
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