CN107270274A - The new Starting mode of ultra-supercritical coal-fired units realizes that the denitration of unit full load is put into - Google Patents
The new Starting mode of ultra-supercritical coal-fired units realizes that the denitration of unit full load is put into Download PDFInfo
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- CN107270274A CN107270274A CN201710556962.9A CN201710556962A CN107270274A CN 107270274 A CN107270274 A CN 107270274A CN 201710556962 A CN201710556962 A CN 201710556962A CN 107270274 A CN107270274 A CN 107270274A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
- F22B35/06—Control systems for steam boilers for steam boilers of forced-flow type
- F22B35/10—Control systems for steam boilers for steam boilers of forced-flow type of once-through type
- F22B35/12—Control systems for steam boilers for steam boilers of forced-flow type of once-through type operating at critical or supercritical pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/04—Controlling superheat temperature by regulating flue gas flow, e.g. by proportioning or diverting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
- F23J2215/101—Nitrous oxide (N2O)
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
- Chimneys And Flues (AREA)
Abstract
Realize that the denitration of unit full load is put into the invention discloses the new Starting mode of ultra-supercritical coal-fired units, it is related to coal combustion technology field.Its implementation is as follows：1st, economizer entrance feed temperature is improved：Boiler feed temperature is improved by putting into steam turbine height adding system before set grid-connection, is fed water by increasing boiler water circulating pump heating economizer entrance of exerting oneself, keeps economizer entrance feed temperature before boiler dry state to maintain 260 DEG C or so all the time；2nd, reheating gas baffle adjusting and optimizing is crossed：By turning down reheating gas baffle aperture to 60% aperture before set grid-connection；3rd, boiler dry and wet state conversion optimization：Three coal pulverizer dry and wet state conversion regimes of 30%BMCR loads unit are changed to four coal pulverizers of more than 40%BMCR loads and carry out dry and wet state conversion.The present invention has the beneficial effect that：It can realize that the grid-connected preceding denitration entrance flue gas temperature of unit starting is more than 300 DEG C of input denitrating systems, meet denitrification apparatus requirement of energy continuous and steady operation in the range of full load.
Description
Technical field
The present invention relates to coal combustion technology field, and in particular to the new Starting mode of ultra-supercritical coal-fired units realizes that unit is complete
Load denitration is put into.
Background technology
With being waited including haze, the air environmental pollution problem of influence daily life is outstanding day by day, and people are for environment
The requirement of quality is also more and more high.The country has some regulations to require that unit needs to meet full load denitration operation.《Thermoelectricity
Factory's atmosphere pollutants emission standardses》（GB13223-2011）After implementation, emission of NOx of boiler concentration must strictly be less than 100mg/
m3.For the riverine key area in Jiangsu, emission of NOx of boiler concentration will meet minimum discharge requirement, i.e., less than 50mg/m3.So,
Under all accidental conditions of unit, it is necessary to keep denitrification apparatus to run, otherwise, underload denitration may be faced and put into operation
Rate is not up to standard, causes power plant to pay charges for disposing pollutants or fine, at the same to denitration electricity price subsidize acquisition will also result in it is very unfavorable
Influence.
Existing example, has 4 × 660MW ultra-supercritical coal-fired units, denitration SCR gateways cigarette temperature reaches more than 300 DEG C, it is allowed to throw
Enter denitrating system.When 30%BMCR operating modes dry state is run, economizer exit design flue-gas temperature is 291.74 DEG C, and unit is 30%
When load condition hygrometric state is run, economizer exit flue-gas temperature is 285 DEG C, and unit is before startup is grid-connected, economizer exit flue gas
Temperature is 280 DEG C or so, and denitration in the range of SCR normal dutys can not be met during underrun and sprays ammonia needs.
The content of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of ultra supercritical combustion reasonable in design
The new Starting mode of coal unit realizes the technology of unit full load denitration input, and it runs shape by field assay boiler and SCR
Condition, in the case of to equipment without any transformation, by improving economizer entrance feed temperature and adjusting heat smoke again
Baffle opening, changes Flow Field Distribution of the flue gas in stove, so that denitration SCR gateway flue-gas temperatures are improved more than 300 DEG C, it is real
Denitration is put into before existing set grid-connection.
In order to solve the problems existing in background technology, the technical solution adopted by the present invention is：Its implementation is as follows：
1st, economizer entrance feed temperature is improved：According to boiler plant characteristic, by putting into steam turbine height before set grid-connection plus being
System improves boiler feed temperature, and boiler utilizes " bypass of economizer water " principle, exerted oneself by increasing boiler water circulating pump in hygrometric state
The feedwater of economizer entrance is heated, keeps economizer entrance feed temperature before boiler dry state to maintain 260 DEG C or so all the time, so as to subtract
The heat that few economizer absorbs from flue gas, to reach the purpose for improving economizer exit cigarette temperature；
2nd, reheating gas baffle adjusting and optimizing is crossed：Opened before set grid-connection by turning down reheating gas baffle aperture respectively to 60%
Degree, changes flow velocity of the flue gas in stove, heating surface is reduced from the caloric receptivity in flue gas, so as to improve economizer exit flue gas temperature
Degree；
3rd, boiler dry and wet state conversion optimization：Three coal pulverizer dry and wet state conversion regimes of 30%BMCR loads unit are changed to 40%
Four coal pulverizers of more than BMCR loads carry out dry and wet state conversion, so as to improve boiler main reheat steam temperature, improve boiler overall thermal and bear
Lotus, reaches the purpose for improving denitration SCR inlet flue-gas temperature.
The present invention has the beneficial effect that：It can realize that the grid-connected preceding denitration entrance flue gas temperature of unit starting is more than 300 DEG C of inputs
Denitrating system, while meeting during the following peak regulation of 30% load, denitration inlet flue gas temperature is not less than 300 DEG C, meets denitrification apparatus and exists
The requirement of energy continuous and steady operation in the range of full load.
Brief description of the drawings
Fig. 1 is equipment component structural representation of the invention.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is further illustrated.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with accompanying drawing and specific implementation
Mode, the present invention will be described in further detail.It should be appreciated that embodiment described herein is only to explain this
Invention, is not intended to limit the present invention.
As shown in figure 1, present embodiment is adopted the following technical scheme that：Concrete mode is as follows：
1st, economizer entrance feed temperature is improved：
（1）Oxygen-eliminating device is heated by auxiliary vapour after ignition of the boiler, remains that feed temperature is more than 120 DEG C in oxygen-eliminating device；
（2）During steam turbine 2500rpm warming-ups, height adding system is gradually put into, so that economizer entrance feed temperature is improved,
Ensure that economizer entrance feed temperature reaches more than 250 DEG C before set grid-connection, can gradually be closed after steam turbine 3000rpm constant speed
Small high other pitch aperture, so as to improve main steam pressure to 8.5MPa or so, improves high plus outlet feed temperature as far as possible；
（3）Increase boiler water circulating pump during boiler hygrometric state to exert oneself, utilize the higher hot water heating economizer entrance of water storage the temperature inside the box
Feedwater, so as to ensure that economizer entrance feed temperature is maintained at more than 250 DEG C before set grid-connection；
（4）Reduce and arranged outside stove water, the adjustment of water storage tank water level is tried one's best and accomplishes zero outer row, so as to reduce boiler water filling amount, it is to avoid
The relatively low feedwater of temperature enters economizer；
（5）During boiler hygrometric state, the load speed that rises is relatively slow, it is to avoid the quick load that rises cause the increase of economizer entrance confluent compared with
It is many, cause economizer entrance feed temperature to decline to a great extent.
2nd, reheating gas baffle adjusting and optimizing is crossed：
（1）Steam turbine rushes Chinese herbaceous peony and keeps overheat gas baffle and the full-gear of reheating gas baffle 100%；
（2）Steam turbine is rushed heat smoke baffle plate and reheating gas baffle after car while turning down to 60% aperture, change flue gas is in stove
Flow velocity, reduce heating surface from the caloric receptivity in flue gas, so as to improve economizer exit flue-gas temperature；
（3）After denitrating system input, when deviation occurs in both sides cigarette temperature, it is hot inclined to eliminate to adjust reheating gas baffle aperture
Difference, crosses the total aperture sum maintenance 120% of reheating gas baffle constant.
3rd, boiler combustion adjusting and optimizing：
（1）The operation of A pulverized coal preparation systems is kept before set grid-connection, A pulverized coal preparation systems mix the coal with high heating value, typically based on the excellent coal of tower,
Ensure that previous coal pulverizer of set grid-connection can burn main reheat steam temperature to 500 DEG C or so；
（2）During steam turbine 2500rpm warming-ups, air-introduced machine and primary air fan are sent in both sides arranged side by side, keep boiler total blast volume in 1400-
1500T/H, increases boiler air-supply volume, so as to improve boiler smoke temperature；
（3）Both sides are sent after air-introduced machine and primary air fan paired running, are recovered 6 pulverized coal preparation system hot stand-by duties, are later stage unit
Steady load up eliminates all defects after grid-connected；
（4）Improve flame kernel height：Before set grid-connection in addition to A pulverized coal preparation system secondary air register larger openings are kept, turn down other
Secondary air register and additional wind, improve secondary air bellow differential pressure 1.0KPa or so, while reduction pivot angle burner is put to higher
Highly, so as to improve flame kernel height；Corresponding Secondary Air is opened before pulverized coal preparation system starts after set grid-connection, leeway is maintained
It is pressed in more than 0.6KPa；
（5）Pressure fan improves bellows differential pressure afterwards side by side, keeps more than thermal wind sensor standard-sized sheet to 50%BMCR loads.
4th, the optimization of boiler main reheat steam temperature：Denitration SCR gateways flue gas temperature is improved using main reheat steam temperature is improved
Degree.Boiler Steam temperature influences larger to flue-gas temperature, and vapor (steam) temperature improves flue-gas temperature and also accordingly improved.Therefore, in steam turbine
Gradually main reheat steam temperature is improved to 430-450 DEG C during warming-up, warming-up gradually carries main reheat steam temperature after terminating
It is high, it is ensured that more than 490 DEG C of grid-connected preceding main reheat steam temperature, gradually main reheat steam temperature is improved to 550 after set grid-connection
℃。
5th, boiler dry and wet state conversion optimization：The traditional dry and wet state conversion of ultra-supercritical boiler is typically selected at 30%BMCR
Three pulverized coal preparation system operations of load are carried out, and are now changed traditional dry and wet state conversion regime, are selected in unit load 40%BMCR loads
Four pulverized coal preparation systems are changed.Boiler is become a cadre start immediately after state under a set of pulverized coal preparation system, stoppage in transit A pulverized coal preparation systems, by this
Method can successfully avoid boiler flue-gas temperature after state of becoming a cadre from declining and more cause denitrating system to trip.
6th, the optimization of steam turbine warm-up period：Steam turbine warm-up period was changed to 3.5 hours by traditional 1.5 hours, profit
The effect of radiator is realized with warming-up, so as to further improve boiler smoke temperature.
4 × 660MW boilers are ultra supercritical parameter variable-pressure operation direct current cookers, and ultra supercritical parameter, pattern are П type cloth
Put, a resuperheat, single burner hearth, balanced draft, using four walls tangential burning mode, design fuel is bituminous coal, product type
For HG-2000/26.15-YM3.Denitration SCR gateways cigarette temperature reaches that more than 300 DEG C allow to put into denitrating system.
1-4 stove denitrating systems take SCR（SCR）Method removes the purpose of NOx in flue gas to reach.It is de-
Two layers of catalyst denitration efficiency of nitre system design efficiency are up to 81%, three layer of catalyst denitration efficiency up to 90%, Catalyst Design
Allow 420 DEG C of maximum operation (service) temperature, it is allowed to minimum 300 DEG C of temperature in use, the escaping of ammonia rate is less than 3ppm.1-4 stove denitrations are normal
Denitration SCR gateway temperature controls are at 300-420 DEG C, cigarette temperature low protection act during less than 300 DEG C, and 4 units are without any complete
Load throws denitration transformation.
Boiler start-up system is band recirculation pump system, and two vertical internal formula steam-water separators are arranged in the rear portion of boiler
Top, the whole working medium for the boiler penthouse bag wall system that enclosure wall tube upper collecting chamber is drawn are sent by 4 connecting tubes after rear vertical shaft
Enter two steam-water separators.In startup stage, the water isolated is connected by water communicating pipe with a vertical separator water storage tank,
And arrived after the recycled pump of water that the steam separated then is sent in the lower header of horizontal low temperature superheater, separator water storage tank
Economizer entrance.
Flue gas flows through division pendant superheater, pendant superheater, finishing superheater, final reheater and the tail of upper furnace successively
Portion's reversal chamber, enters back into the forward and backward two back-end ductwork vertical shafts being divided into dividing wall, flue gas flows through cold reheat in preceding vertical shaft
Device and prime economizer, another part flue gas then flow through low temperature superheater and rear class economizer, in the outlet of forward and backward two points of vertical shafts
Flue gas distributor is arranged, flue gas is flowed through after distributor by connecting flue, denitration SCR, rotary regenerative air preheater, electricity
Deduster, air-introduced machine, desulfurizer, are arranged to air from chimney.
Tested by multiple unit starting, sum up the unique extra-supercritical unit Starting mode of the above, May 19 in 2017
Day and June 11, genco is tested 1, in No. 2 start-up courses respectively, realizes the grid-connected preceding denitration SCR of unit starting
Gateway flue-gas temperature reaches that more than 300 DEG C put into denitrating system, so that clothes keep denitrating system to put into operation entirely, meets simultaneously
During the following peak regulation of 30% load, denitration inlet flue gas temperature is not less than 300 DEG C, meets denitrification apparatus equal energy in the range of full load
The requirement of continuous and steady operation.
By the innovative Starting mode of above ultra-supercritical boiler, genco realizes ultra-supercritical boiler without setting
Full load input denitrating system in the case of standby transformation.This invention can both realize the purpose of environmental protection, while also being saved for company
About about 35,000,000 yuan of scrap build expense.
It is described above, it is merely illustrative of the technical solution of the present invention and unrestricted, those of ordinary skill in the art are to this hair
Other modifications or equivalent substitution that bright technical scheme is made, without departing from the spirit and scope of technical solution of the present invention,
It all should cover among scope of the presently claimed invention.
Claims (6)
1. the new Starting mode of ultra-supercritical coal-fired units realizes that the denitration of unit full load is put into, it is characterised in that implementation is such as
Under：
（1）, improve economizer entrance feed temperature：According to boiler plant characteristic, added by putting into steam turbine height before set grid-connection
System improves boiler feed temperature, and boiler utilizes " bypass of economizer water " principle, gone out by increasing boiler water circulating pump in hygrometric state
Power heating economizer entrance feedwater, keeps economizer entrance feed temperature before boiler dry state to maintain 260 DEG C or so all the time；
（2）, cross reheating gas baffle adjusting and optimizing：By turning down reheating gas baffle aperture respectively to 60% before set grid-connection
Aperture, changes flow velocity of the flue gas in stove, reduces heating surface from the caloric receptivity in flue gas；
（3）, boiler dry and wet state conversion optimization：Three coal pulverizer dry and wet state conversion regimes of 30%BMCR loads unit are changed to 40%
Four coal pulverizers of more than BMCR loads carry out dry and wet state conversion, so as to improve boiler main reheat steam temperature, improve boiler overall thermal and bear
Lotus.
2. the new Starting mode of ultra-supercritical coal-fired units according to claim 1 realizes that the denitration of unit full load is put into,
It is characterized in that improving economizer entrance feed temperature also includes：
（1）Oxygen-eliminating device is heated by auxiliary vapour after ignition of the boiler, remains that feed temperature is more than 120 DEG C in oxygen-eliminating device；
（2）During steam turbine 2500rpm warming-ups, height adding system is gradually put into, so that economizer entrance feed temperature is improved,
Ensure that economizer entrance feed temperature reaches more than 250 DEG C before set grid-connection, can gradually be closed after steam turbine 3000rpm constant speed
Small high other pitch aperture, so as to improve main steam pressure to 8.5MPa or so, improves high plus outlet feed temperature as far as possible；
（3）Increase boiler water circulating pump during boiler hygrometric state to exert oneself, utilize the higher hot water heating economizer entrance of water storage the temperature inside the box
Feedwater, so as to ensure that economizer entrance feed temperature is maintained at more than 250 DEG C before set grid-connection；
（4）Reduce and arranged outside stove water, the adjustment of water storage tank water level is tried one's best and accomplishes zero outer row, so as to reduce boiler water filling amount；
（5）During boiler hygrometric state, the load speed that rises is relatively slow, it is to avoid the quick load that rises cause the increase of economizer entrance confluent compared with
It is many.
3. the new Starting mode of ultra-supercritical coal-fired units according to claim 1 realizes that the denitration of unit full load is put into,
It was characterized in that reheating gas baffle adjusting and optimizing also included：
（1）Steam turbine rushes Chinese herbaceous peony and keeps overheat gas baffle and the full-gear of reheating gas baffle 100%；
（2）Steam turbine is rushed heat smoke baffle plate and reheating gas baffle after car while turning down to 60% aperture, change flue gas is in stove
Flow velocity, reduce heating surface from the caloric receptivity in flue gas, so as to improve economizer exit flue-gas temperature；
（3）After denitrating system input, when deviation occurs in both sides cigarette temperature, it is hot inclined to eliminate to adjust reheating gas baffle aperture
Difference, crosses the total aperture sum maintenance 120% of reheating gas baffle constant.
4. the new Starting mode of ultra-supercritical coal-fired units according to claim 1 realizes that the denitration of unit full load is put into,
Characterized by further comprising boiler combustion adjusting and optimizing：
（1）The operation of A pulverized coal preparation systems is kept before set grid-connection, A pulverized coal preparation systems mix coal blending, based on the excellent coal of tower, it is ensured that set grid-connection
Previous coal pulverizer can burn main reheat steam temperature to 500 DEG C or so；
（2）During steam turbine 2500rpm warming-ups, air-introduced machine and primary air fan are sent in both sides arranged side by side, keep boiler total blast volume in 1400-
1500T/H, increases boiler air-supply volume；
（3）Both sides are sent after air-introduced machine and primary air fan paired running, recover 6 pulverized coal preparation system hot stand-by duties；
（4）Improve flame kernel height：Before set grid-connection in addition to A pulverized coal preparation system secondary air register larger openings are kept, turn down other
Secondary air register and additional wind, improve secondary air bellow differential pressure 1.0KPa or so, while reduction pivot angle burner is put to higher
Highly, so as to improve flame kernel height；Corresponding Secondary Air is opened before pulverized coal preparation system starts after set grid-connection, leeway is maintained
It is pressed in more than 0.6KPa；
（5）Pressure fan improves bellows differential pressure afterwards side by side, keeps more than thermal wind sensor standard-sized sheet to 50%BMCR loads.
5. the new Starting mode of ultra-supercritical coal-fired units according to claim 1 realizes that the denitration of unit full load is put into,
Characterized by further comprising the optimization of boiler main reheat steam temperature：Denitration SCR gateways are improved using main reheat steam temperature is improved
Flue-gas temperature, Boiler Steam temperature influences larger to flue-gas temperature, and vapor (steam) temperature improves flue-gas temperature and also accordingly improved.Therefore, exist
Gradually main reheat steam temperature is improved to 430-450 DEG C during steam turbine warming-up, warming-up terminate after gradually by main reheated steam
Temperature is improved, it is ensured that more than 490 DEG C of grid-connected preceding main reheat steam temperature, gradually improves main reheat steam temperature after set grid-connection
To 550 DEG C.
6. the new Starting mode of ultra-supercritical coal-fired units according to claim 1 realizes that the denitration of unit full load is put into,
Characterized by further comprising the optimization of steam turbine warm-up period：It is small that steam turbine warm-up period was changed to 3.5 by traditional 1.5 hours
When.
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Cited By (8)
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|---|---|---|---|---|
| CN107883369A (en) * | 2017-11-30 | 2018-04-06 | 华电电力科学研究院 | Adapt to the boiler feedwater step heating system and adjusting method of the wide load denitration of unit |
| CN108613165A (en) * | 2018-04-27 | 2018-10-02 | 华能国际电力股份有限公司上海石洞口第二电厂 | Come into operation the control method of denitrification apparatus before a kind of fired power generating unit startup stage is grid-connected |
| CN108954283A (en) * | 2018-06-26 | 2018-12-07 | 国网浙江省电力有限公司电力科学研究院 | Overcritical or extra-supercritical unit hygrometric state become a cadre state process automatic control method |
| CN109323238A (en) * | 2018-09-14 | 2019-02-12 | 中国电建集团江西省电力建设有限公司 | Supercritical DC furnace cold start threw method of denitration in 8 hours |
| CN110542109A (en) * | 2019-09-30 | 2019-12-06 | 大唐郓城发电有限公司 | Double reheat boiler tail three-flue and installation method thereof |
| CN112221345A (en) * | 2020-09-25 | 2021-01-15 | 华能国际电力股份有限公司上海石洞口第二电厂 | Automatic control method for boiler flue gas baffle of ultra-supercritical generator set |
| CN112774431A (en) * | 2019-11-01 | 2021-05-11 | 大唐国际发电股份有限公司陡河发电厂 | Method for putting thermal power plant denitration system into operation |
| CN114768523A (en) * | 2022-03-31 | 2022-07-22 | 西安热工研究院有限公司 | SCR full-load denitration system of thermal generator set |
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| CN108954283B (en) * | 2018-06-26 | 2019-10-29 | 国网浙江省电力有限公司电力科学研究院 | Overcritical or extra-supercritical unit hygrometric state become a cadre state process automatic control method |
| CN109323238A (en) * | 2018-09-14 | 2019-02-12 | 中国电建集团江西省电力建设有限公司 | Supercritical DC furnace cold start threw method of denitration in 8 hours |
| CN110542109A (en) * | 2019-09-30 | 2019-12-06 | 大唐郓城发电有限公司 | Double reheat boiler tail three-flue and installation method thereof |
| CN112774431A (en) * | 2019-11-01 | 2021-05-11 | 大唐国际发电股份有限公司陡河发电厂 | Method for putting thermal power plant denitration system into operation |
| CN112774431B (en) * | 2019-11-01 | 2022-05-24 | 大唐国际发电股份有限公司陡河发电厂 | Method for putting thermal power plant denitration system into operation |
| CN112221345A (en) * | 2020-09-25 | 2021-01-15 | 华能国际电力股份有限公司上海石洞口第二电厂 | Automatic control method for boiler flue gas baffle of ultra-supercritical generator set |
| CN114768523A (en) * | 2022-03-31 | 2022-07-22 | 西安热工研究院有限公司 | SCR full-load denitration system of thermal generator set |
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