CN212511221U - Full-load denitration device for deep peak shaving of boiler - Google Patents
Full-load denitration device for deep peak shaving of boiler Download PDFInfo
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- CN212511221U CN212511221U CN202021248860.4U CN202021248860U CN212511221U CN 212511221 U CN212511221 U CN 212511221U CN 202021248860 U CN202021248860 U CN 202021248860U CN 212511221 U CN212511221 U CN 212511221U
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Abstract
The utility model discloses a full load denitrification facility for boiler degree of depth peak shaving, include: a tail smoke well steering chamber, a heater and an economizer are sequentially arranged on the main flue along the flow direction of smoke; the inlet of the bypass flue is communicated with the tail smoke well turning chamber, and the outlet of the bypass flue is arranged on the flue at the inlet of the SCR reactor; the economizer is connected with a water supply pipeline; a zero high-pressure heater, a first high-pressure heater, a second high-pressure heater, a third high-pressure heater, a water feeding pump and a deaerator are sequentially arranged on the water feeding pipeline along the reverse direction of water feeding; the zero high-pressure heater is communicated with a zero high-pressure air adding and extracting pipeline, and the zero high-pressure air adding and extracting pipeline is provided with a zero high-pressure air adding and extracting pipeline adjusting valve. The utility model discloses a device is through controlling flue gas bypass flue gas through-flow volume to zero number high pressure feed water heater is put into operation in the coupling, can realize the regulation and control of unit full load denitration and operation gas temperature.
Description
Technical Field
The utility model belongs to the technical field of thermoelectricity flexibility and full load denitration, in particular to full load denitrification facility for boiler degree of depth peak shaving.
Background
With the continuous reform of the environmental protection policy, the emission standard of the atmospheric pollutants in the thermal power plant needs to realize ultralow emission, and the investment of a full-load working condition denitration device is required to be realized. A large number of coal-fired boilers are all provided with SCR (selective catalytic oxidation reduction) denitration devices, and due to the inherent characteristics of the SCR denitration devices, strict requirements (300-420 ℃) are imposed on the reaction temperature, and when the inlet smoke temperature of the denitration devices is lower than a lower limit value, the SCR denitration devices cannot be normally put into operation.
In recent years, the development of distributed clean energy such as wind power generation, solar power generation and the like is rapid, the main tasks of most coal-fired power station boilers with smaller installed capacity are changed from full-load power generation to peak shaving operation, and the units are in low-load operation for a long time; the optimal smoke temperature of the SCR denitration device is difficult to achieve under the low-load operation, so that NO is generatedxThe discharge amount can not meet the relevant requirements of environmental protection, and a large amount of ammonia gas can escape, and the ammonia gas reacts with sulfide to generate sulfuric acid crystals, so that the problems of low-temperature corrosion of the air preheater and the like are caused.
In conclusion, achieving ultra-low emission in full-load denitration becomes a technical problem, and a new full-load denitration device for deep peak shaving of a boiler is urgently needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a full load denitrification facility for boiler degree of depth peak shaving to solve the above-mentioned one or more technical problem who exists. The utility model discloses a device is through controlling flue gas bypass flue gas through-flow volume to zero number high pressure feed water heater is put into operation in the coupling, can realize the regulation and control of unit full load denitration and operation gas temperature.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses a full load denitrification facility for boiler degree of depth peak shaving, include: a main flue and an SCR reactor; the inlet of the main flue is used for being communicated with a boiler; further comprising: the system comprises a denitration inlet flue, an SCR reactor inlet horizontal flue, a flue gas bypass and a zero-number high-pressure heater;
the outlet of the main flue is communicated with the inlet of the SCR reactor through a denitration inlet flue and an SCR reactor inlet horizontal flue; a tail smoke well steering chamber, a heater and an economizer are sequentially arranged on the main flue along the flow direction of smoke;
the denitration inlet flue is sequentially provided with an adjusting baffle and an ammonia gas injection gun along the flowing direction of flue gas;
the inlet of the flue gas bypass is communicated with the tail smoke well steering chamber, and the outlet of the flue gas bypass is arranged on the horizontal flue of the inlet of the SCR reactor;
the coal economizer is connected with a water supply pipeline; a zero high-pressure heater, a first high-pressure heater, a second high-pressure heater, a third high-pressure heater, a water feeding pump and a deaerator are sequentially arranged on the water feeding pipeline along the reverse direction of water feeding; and the zero high-pressure heater is communicated with a zero high-pressure air adding and extracting pipeline, and the zero high-pressure air adding and extracting pipeline is provided with a zero high-pressure air adding and extracting pipeline regulating valve.
The utility model discloses a further improvement lies in, be provided with expansion joint, bypass flue regulating gate and bypass flue turn-off gate in the flue gas bypass.
The utility model discloses a further improvement lies in, still includes: a temperature detector and a DCS;
the temperature detector is arranged at the inlet of the SCR reactor and is used for detecting the temperature of the flue gas at the inlet of the SCR reactor;
the signal output end of the temperature detector is connected with the signal input end of the DCS; and the signal output end of the DCS is connected with the signal receiving ends of the adjusting baffle and the bypass flue adjusting door and is used for realizing automatic opening adjustment.
The utility model discloses a further improvement lies in, still includes: the zero high pressure drainage pipeline is used for timely and reliably discharging drainage of the zero high pressure heater so as to maintain the stability of water level and steam side pressure in the heater;
the zero high pressure drainage pipeline is arranged between the zero high pressure heater and the second high pressure heater;
and the zero high pressure water drain pipeline is connected in parallel with a water supply pipeline between the zero high pressure heater and the second high pressure heater.
The utility model discloses a further improvement lies in, the flue gas bypass is two, follows the afterbody cigarette well respectively and turns to the back wall bilateral symmetry position of room and draw out, and the horizontal flue of SCR reactor entry is inserted to the symmetry.
The utility model discloses a further improvement lies in, high pressure feed water heater, No. two high pressure feed water heater, No. three high pressure feed water heater are provided with one number height respectively and add bleed-off line, No. two height add bleed-off line and No. three height add bleed-off line.
The utility model discloses a further improvement lies in, still includes: a boiler.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a device has proposed the full load denitration operation technique of "full load denitration flue gas bypass + add No. zero high pressure feed water heater", and through control flue gas bypass flue gas through-flow volume to zero high pressure feed water heater is put into operation in the coupling, realizes the regulation and control of unit full load denitration and operation smoke temperature. Specifically, the flue gas bypass access position of the utility model is obviously different from the common flue gas bypass technology (the insertion point is the horizontal flue of the SCR inlet, and the insertion point of the common flue gas bypass technology is the denitration inlet flue), and has the characteristics of large pressure difference, short pipeline, small system resistance, large amount of extracted flue gas and the like; the utility model discloses the smoke outlet of flue gas bypass is selected and is turned to the room at the afterbody cigarette shaft, and common flue gas bypass technique smoke outlet is selected and is entered the mouth at the economizer, turns to the medium temperature flue gas enthalpy value of room department extraction higher, and is big to SCR reactor entry flue gas temperature's lifting range, is convenient for realize the operation requirement to catalyst entry flue gas temperature when the unit peak regulation. The utility model discloses still add a zero number high pressure feed water heater on economizer water supply line, improve economizer entry temperature, reduce the economizer heat absorption capacity, improve SCR reactor entry smoke temperature. When the unit is started or stopped or the low-load operation is carried out, the opening degree of the adjusting baffle and the opening degree of the bypass flue are adjusted, the through flow rate of the bypass flue gas of the full-load denitration flue gas is increased, the zero-number high-pressure heating pipeline adjusting valve is adjusted, the zero-number high-pressure heater is coupled and put into operation, the inlet water temperature of the economizer is improved, the input proportion of the inlet water temperature and the inlet water temperature of the SCR reactor is controlled to be higher than the lowest continuous operation temperature of the denitration catalyst according to the operation cost of the boiler, the full-load denitration is realized, and the overall. The utility model provides a full load denitrification facility suitable for boiler degree of depth peak shaving is particularly useful for the thermal power plant of unit degree of depth peak shaving.
The expansion joint is arranged in the flue gas bypass, so that when the length of the pipe changes due to the temperature change of the flue gas bypass, the expansion joint displaces along the axial direction of the pipe, and the sealing can be still ensured when the flue gas bypass deforms; the bypass flue adjusting door and the bypass flue turn-off door have the advantages that the opening degree of the baffle can be adjusted to change the flow of bypass flue gas, the switching between the operation and the stop of the unit can be carried out according to the operation requirement of the unit, and meanwhile, the system is convenient to overhaul.
The utility model discloses be provided with the thermometer in the entry position of SCR reactor, thermodetector's signal output part is connected with DCS's signal input part, and main flue gas baffle aperture and bypass regulation aperture are also controlled by DSC simultaneously to in DSC with the temperature signal of baffle aperture signal and the smoke temperature measuring device feedback of denitration entry in the temperature signal be correlated with, thereby realize baffle aperture automatically regulated, come the flue gas temperature that nimble control got into the SCR reactor.
The utility model discloses in, the zero number height that sets up adds hydrophobic pipeline and is used for in time reliably with the hydrophobic discharge of zero number high pressure feed water heater (20) to the stability of water level stability and vapour side pressure in maintaining the heater.
The utility model discloses in, adopt two to turn to the bypass flue that the room was drawn forth from the rear wall bilateral symmetry position of afterbody cigarette well, its advantage lies in to turn to the indoor disturbance in flow field less to the afterbody cigarette well, and the sectional area of every pipe can design less, the transformation and the installation of the power station unit of being convenient for.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below; it is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic diagram of an embodiment of the present invention illustrating a flue gas bypass arrangement;
FIG. 2 is a schematic diagram of the arrangement of a zero-number high-pressure heater regenerative system in the embodiment of the present invention;
in fig. 1 and 2, 1, a boiler; 2. a tail well diversion chamber; 3. a heater; 4. a coal economizer; 5. an ammonia gas injection gun; 6. An SCR reactor; 7. a flue gas bypass; 8. an expansion joint; 9. a bypass flue damper; 10. a bypass flue shutoff valve; 11. adjusting the baffle; 12. a temperature detector; 13. a first high pressure drainage pipeline; 14. a zero-number high-pressure drainage pipeline; 15. a deaerator; 16. A feed pump; 17. a third high pressure heater; 18. a second high pressure heater; 19. a first high pressure heater; 20. a high pressure heater No. zero; 21. a water supply pipe; 22. a water supply large bypass; 23. a zero-height air pumping pipeline is added; 24. a zero-height air pumping pipeline adjusting valve; 25. a first high pressure pumping pipeline; 26. a second high pressure pumping pipeline; 27. and a third high pressure pumping pipeline.
Detailed Description
In order to make the purpose, technical effect and technical solution of the embodiments of the present invention clearer, the following description, with reference to the drawings in the embodiments of the present invention, clearly and completely describes the technical solution in the embodiments of the present invention; obviously, the described embodiments are some of the embodiments of the present invention. Based on the embodiments disclosed in the present invention, other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
The utility model discloses a full load denitrification facility for boiler degree of depth peak shaving, include: the system comprises a boiler 1, a tail smoke well steering chamber 2, a heater 3, an economizer 4, an ammonia gas injection gun 5 and an SCR reactor 6 which are sequentially communicated through a main flue;
wherein, the economizer 4 is connected with a water supply pipeline 21; a zero-number high-pressure heater 20 is additionally arranged on the water supply pipeline 21, a flue gas bypass 7 is arranged between the tail smoke well steering chamber 2 and the horizontal flue at the inlet of the SCR reactor 6 of the main flue, an expansion joint 8, a bypass flue adjusting door 9 and a bypass flue shutoff door 10 are arranged in the flue gas bypass 7, and an adjusting baffle 11 is arranged in the denitration inlet flue; the zero high-pressure heater 20 is sequentially connected with a first high-pressure heater 19, a second high-pressure heater 18, a third high-pressure heater 17, a water feeding pump 16 and a deaerator 15; and the zero high pressure heater 20 is also connected with a zero high pressure adding and exhausting pipeline 23, and the zero high pressure adding and exhausting pipeline 23 is provided with a zero high pressure adding and exhausting pipeline regulating valve 24.
The embodiment of the utility model provides an in, 6 entry positions of SCR reactor are provided with thermodetector 12, and thermodetector 12's signal output part is connected with DCS's signal input part. The opening of the adjusting baffle and the opening of the bypass flue are simultaneously controlled by the DSC, and the opening signal of the baffle is related to the temperature signal fed back by the smoke temperature detector at the inlet of the SCR reactor in the DSC, so that the automatic adjustment of the opening of the baffle is realized.
In the embodiment of the utility model provides an in, the entry linkage of flue gas bypass 7 turns to room 2 at the afterbody tobacco shaft, the exit linkage of flue gas bypass 7 is at SCR reactor entry horizontal flue.
The embodiment of the utility model provides an in, 2 flue gas bypasses 7 turn to 2 rear wall bilateral symmetry positions from the afterbody tobacco shaft and draw forth, the transition section that the horizontal flue of SCR reactor entry was inserted to the symmetry respectively.
In the embodiment of the utility model, be provided with between No. 20 high pressure feed water heaters 18 and the two with the parallel No. 14 high hydrophobic pipelines that add of water supply pipe between the two.
The embodiment of the utility model provides an in, still include: high plus drain pipe 13.
As shown in fig. 1 and fig. 2, the embodiment of the utility model provides a full load denitrification facility suitable for boiler degree of depth peak shaving, include: the system comprises a boiler 1, a tail smoke well steering chamber 2, a heater 3, an economizer 4, an ammonia gas injection gun 5 and an SCR reactor 6 which are connected in sequence through a main flue; the economizer 4 is connected with a water supply pipeline 21, a zero high-pressure heater 20 is additionally arranged on the water supply pipeline 21, a flue gas bypass 7 is arranged between the tail smoke well steering chamber 2 and a horizontal flue at the inlet of the SCR reactor 6 of the main flue, and an expansion joint 8, a bypass flue adjusting door 9 and a bypass flue shutoff door 10 are arranged in the flue gas bypass 7; an adjusting baffle 11 is arranged in the denitration inlet flue; the zero high-pressure heater 20 is sequentially connected with a first high-pressure heater 19, a second high-pressure heater 18, a third high-pressure heater 17, a water feeding pump 16 and a deaerator 15, the zero high-pressure heater 20 is also connected with a zero high pressure adding and exhausting pipeline 23, and the zero high pressure adding and exhausting pipeline 23 is provided with a zero high pressure adding and exhausting pipeline adjusting valve 24; a temperature detector 12 is arranged at the inlet of the SCR reactor 6, and the signal output end of the temperature detector 12 is connected with the signal input end of the DCS. An inlet of the flue gas bypass 7 is connected with the tail smoke well turning chamber 2, and an outlet of the flue gas bypass 7 is connected with a horizontal flue at an inlet of the SCR reactor 6; 2 flue gas bypasses 7 are led out from the symmetrical positions of the left side and the right side of the rear wall of the tail smoke well turning chamber 2 and are respectively and symmetrically inserted into the transition sections of the horizontal flues at the inlet of the SCR reactor 6. A zero high pressure water drain pipeline 14 connected with a water supply pipeline in parallel between the zero high pressure heater 20 and the second high pressure heater 19 is arranged between the two high pressure heaters. The inlet position of the SCR reactor 6 is provided with a temperature detector 12, the signal output end of the temperature detector 12 is connected with the signal input end of the DCS, the opening of the adjusting baffle 11 and the opening of the bypass flue adjusting door 9 are simultaneously controlled by the DSC, and the opening signal of the baffle is related to the temperature signal fed back by the smoke temperature detector 12 at the inlet of the SCR reactor 6 in the DSC, so that the automatic adjustment of the opening of the baffle is realized.
In summary, in the prior art, for example, CN 206556047U, entitled "a denitration flue gas bypass system", a flue gas bypass is arranged at an inlet and an outlet of an economizer, and the amount of flue gas in the bypass is adjusted, so as to realize the regulation and control of the flue gas temperature at the low-load SCR denitration inlet. Aiming at the problems that the cross section of the flue gas bypass is too large and the baffle is easy to deform, deposit ash, wear and the like in the current high-capacity coal-fired unit, the bypass flue gas amount and the flue gas temperature adjusting range are limited. In the prior art, for example, CN 102937296 a, entitled "boiler suitable for full-load operation of denitration equipment", coal economizers are arranged in sections to meet the requirement of low-load denitration operation, but the coal economizers need to be arranged in stages, so that the modification engineering amount of an active unit is large, the problem of full-load operation smoke temperature needs to be considered, and the SCR denitration device cannot be kept in a high denitration performance state.
The flue gas bypass access position of the utility model is obviously different from the common flue gas bypass technology (the insertion point is the horizontal flue of the SCR inlet, and the insertion point of the common flue gas bypass technology is the denitration inlet flue), and has the characteristics of large pressure difference, short pipeline, small system resistance, large flue gas extraction amount and the like; and the utility model discloses the smoke extraction mouth of flue gas bypass is selected and is turned to the room at the afterbody cigarette shaft, and common flue gas bypass technique smoke extraction mouth is selected and is entered the mouth at the economizer, turns to the medium temperature flue gas enthalpy value of room department extraction higher, and is big to SCR reactor entry flue gas temperature's lifting range, is convenient for realize the operation requirement to catalyst entry flue gas temperature when the unit peak regulation. The utility model discloses be provided with the thermometer in the entry position of SCR reactor, thermodetector's signal output part is connected with DCS's signal input part, and main flue gas baffle aperture and bypass regulation aperture are also controlled by DSC simultaneously to in DSC with the temperature signal of baffle aperture signal and the smoke temperature measuring device feedback of denitration entry in the temperature signal be correlated with, thereby realize baffle aperture automatically regulated, come the flue gas temperature that nimble control got into the SCR reactor. The utility model discloses still add a zero number high pressure feed water heater on economizer water supply line, improve economizer entry temperature, reduce the economizer heat absorption capacity, improve SCR reactor entry smoke temperature. When the unit is started or stopped or the low-load operation is carried out, the opening degree of the adjusting baffle and the opening degree of the bypass flue are adjusted, the through flow rate of the bypass flue gas of the full-load denitration flue gas is increased, the zero-number high-pressure heating pipeline adjusting valve is adjusted, the zero-number high-pressure heater is coupled and put into operation, the inlet water temperature of the economizer is improved, the input proportion of the inlet water temperature and the inlet water temperature of the SCR reactor is controlled to be higher than the lowest continuous operation temperature of the denitration catalyst according to the operation cost of the boiler, the full-load denitration is realized, and the overall.
The utility model discloses an operating method for full load denitrification facility of boiler degree of depth peak shaving, including following step:
when the unit is started, after the boiler 1 is ignited, in the process of temperature rise and pressure rise along with the rise of the pressure of main reheat steam, the opening degree of a zero-grade high-pressure air-extracting pipeline adjusting valve 24 is adjusted, the water supply temperature is gradually increased to be more than or equal to 200 ℃ according to the condition of the pressure of an inlet of an economizer 4, when the temperature of smoke at an inlet of an SCR reactor 6 is more than or equal to 200 ℃, the smoke bypass 7 is gradually fed, and the temperature of the smoke at the inlet of the SCR reactor 6 is gradually increased to be more than or equal to 300 ℃ and;
when the unit is in low-load operation, when the smoke temperature at the inlet of the SCR reactor 6 is lower than 310 ℃, the smoke bypass 7 is put into the operation, and meanwhile, the zero-high pressure heating and air exhaust pipeline adjusting valve 24 can be properly opened, the zero-high pressure heater 20 is put into operation, the water supply temperature of the economizer 4 is increased, the heat absorption capacity of the economizer 4 is reduced, and the smoke temperature at the inlet of the SCR reactor 6 is not lower than 300 ℃; when the unit is stopped in a sliding mode, in the unit sliding parameter stopping process and during load reduction, when the smoke temperature at the inlet of the SCR reactor 6 is less than 310 ℃, the smoke bypass 7 is put into operation in advance, the smoke temperature at the inlet of the SCR reactor 6 is increased, and the smoke temperature at the inlet of the SCR reactor 6 is ensured to be higher than 300 ℃.
To sum up, the embodiment of the utility model discloses full load denitrification facility suitable for boiler degree of depth peak shaving adopts flue gas bypass coupling to add zero number height and adds key technology, turns to room, flue gas bypass, bypass flue governing door, economizer, flue main regulation door, thermodetector, SCR reactor and zero number height by afterbody cigarette shaft and adds equipment such as constitution. Different from the common flue gas bypass technology, the inlet of the flue gas bypass is connected with the tail smoke well steering chamber, and the outlet of the flue gas bypass is connected with the horizontal flue at the inlet of the SCR reactor. When the unit is started or stopped or runs at a low load, the opening of the bypass flue is adjusted, the smoke bypass smoke flux is increased, the zero-number high-pressure heater is put into operation in a coupling mode, the water temperature at the inlet of the economizer is increased, the input proportion of the boiler and the bypass flue is controlled according to the running cost of the boiler, the smoke temperature at the inlet of the SCR reactor is controlled to be higher than the lowest running temperature, and full-load denitration of the unit is achieved.
The above embodiments are only used to illustrate the technical solution of the present invention and not to limit the same, although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify or equally replace the specific embodiments of the present invention, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention is within the protection scope of the claims of the present invention.
Claims (7)
1. A full load denitrification facility for deep peak shaving of boilers, comprising: a main flue and an SCR reactor (6); the inlet of the main flue is used for being communicated with a boiler; it is characterized by also comprising: the denitration inlet flue, the SCR reactor inlet horizontal flue, a flue gas bypass (7) and a zero high-pressure heater (20);
the outlet of the main flue is communicated with the SCR reactor (6) through a denitration inlet flue and an SCR reactor inlet horizontal flue; a tail smoke well steering chamber (2), a heater (3) and an economizer (4) are sequentially arranged on the main flue along the smoke flowing direction;
the denitration inlet flue is sequentially provided with an adjusting baffle (11) and an ammonia gas injection gun (5) along the flowing direction of flue gas;
an inlet of the flue gas bypass (7) is communicated with the tail smoke well turning chamber (2), and an outlet of the flue gas bypass (7) is arranged on a horizontal flue at an inlet of the SCR reactor;
the economizer (4) is connected with a water supply pipeline (21); a zero-number high-pressure heater (20), a first high-pressure heater (19), a second high-pressure heater (18), a third high-pressure heater (17), a water feeding pump (16) and a deaerator (15) are sequentially arranged on the water feeding pipeline (21) along the reverse direction of water feeding; the zero high-pressure heater (20) is communicated with a zero high-pressure air adding and extracting pipeline (23), and the zero high-pressure air adding and extracting pipeline (23) is provided with a zero high-pressure air adding and extracting pipeline adjusting valve (24).
2. The full-load denitration device for boiler deep peak shaving according to claim 1, characterized in that an expansion joint (8), a bypass flue adjusting door (9) and a bypass flue shutoff door (10) are arranged in the flue gas bypass (7).
3. The full-load denitration device for boiler deep peak shaving according to claim 2, further comprising: a temperature detector (12) and a DCS;
the temperature detector (12) is arranged at an inlet of the SCR reactor (6) and is used for detecting the temperature of the flue gas at the inlet of the SCR reactor;
the signal output end of the temperature detector (12) is connected with the signal input end of the DCS; and the signal output end of the DCS is connected with the signal receiving end of the adjusting baffle (11) and the bypass flue adjusting door (9) and is used for realizing automatic opening adjustment.
4. The full-load denitration device for boiler deep peak shaving according to claim 1, further comprising: the zero high pressure drainage pipeline (14) is used for discharging drainage of the zero high pressure heater (20) and maintaining the stability of water level and steam side pressure in the heater;
the zero-number high-pressure and drainage pipeline (14) is arranged between the zero-number high-pressure heater (20) and the second high-pressure heater (18);
and the zero high pressure water drainage pipeline (14) is connected in parallel with a water supply pipeline between the zero high pressure heater (20) and the second high pressure heater (18).
5. The full-load denitration device for the deep peak shaving of the boiler according to claim 1, characterized in that the number of the flue gas bypasses (7) is two, the two flue gas bypasses are respectively led out from the symmetrical positions at the left and right sides of the rear wall of the tail smoke well turning chamber (2) and are symmetrically inserted into the horizontal flue at the inlet of the SCR reactor.
6. The full-load denitration device for the deep peak shaving of the boiler according to claim 1, wherein the first high-pressure heater (19), the second high-pressure heater (18) and the third high-pressure heater (17) are respectively provided with a first high-pressure pumping pipeline (25), a second high-pressure pumping pipeline (26) and a third high-pressure pumping pipeline (27).
7. The full-load denitration device for boiler deep peak shaving according to claim 1, further comprising: a boiler (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021248860.4U CN212511221U (en) | 2020-06-30 | 2020-06-30 | Full-load denitration device for deep peak shaving of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN111649349A (en) * | 2020-06-30 | 2020-09-11 | 国网陕西省电力公司电力科学研究院 | Full-load denitration system for deep peak shaving of boiler and operation method thereof |
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| CN111649349A (en) * | 2020-06-30 | 2020-09-11 | 国网陕西省电力公司电力科学研究院 | Full-load denitration system for deep peak shaving of boiler and operation method thereof |
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Effective date of registration: 20240517 Address after: No. 669, Aerospace Middle Road, National Civil Aerospace Industry Base, Xi'an City, Shaanxi Province 710199 Patentee after: Electric Power Research Institute of State Grid Shaanxi Electric Power Co.,Ltd. Country or region after: China Patentee after: XI'AN JIAOTONG University Patentee after: STATE GRID CORPORATION OF CHINA Address before: No.669, Hangtian Middle Road, Chang'an District, Xi'an City, Shaanxi Province Patentee before: STATE GRID SHAANXI ELECTRIC POWER Research Institute Country or region before: China Patentee before: XI'AN JIAOTONG University Patentee before: STATE GRID CORPORATION OF CHINA |