CN112460625A - Anti-blocking system of rotary air preheater - Google Patents
Anti-blocking system of rotary air preheater Download PDFInfo
- Publication number
- CN112460625A CN112460625A CN202011426698.5A CN202011426698A CN112460625A CN 112460625 A CN112460625 A CN 112460625A CN 202011426698 A CN202011426698 A CN 202011426698A CN 112460625 A CN112460625 A CN 112460625A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- air
- air preheater
- rotary air
- flue gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- 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
- F23J15/006—Layout of treatment plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/16—Waste heat
- F24D2200/18—Flue gas recuperation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Supply (AREA)
Abstract
A rotary air preheater anti-blocking system relates to the technical field of boilers. The invention solves the problems of serious ash blockage corrosion and high boiler exhaust gas temperature of the conventional rotary air preheater. An air outlet of a primary air heat exchanger is connected with a primary air inlet at the cold end of a rotary air preheater, an air outlet of a secondary air heat exchanger is connected with a secondary air inlet at the cold end of the rotary air preheater, a flue gas outlet of the rotary air preheater is connected with an air inlet of a dust remover at the tail end of a boiler, an air outlet of the dust remover is connected with an air inlet of the next device through a flue, a flue gas heat exchanger is arranged on the flue behind the air outlet of the dust remover, a circulating water outlet of the flue gas heat exchanger is respectively connected with a water inlet of the primary air heat exchanger and a water inlet of the secondary air heat exchanger, and a water inlet of the flue gas heat exchanger is respectively connected. The invention is used for preventing the ash blockage corrosion of the rotary air preheater and reducing the smoke discharge temperature of the boiler.
Description
Technical Field
The invention relates to the technical field of boilers, in particular to an anti-blocking system of a rotary air preheater.
Background
The thermal power generation boiler is provided with a denitration device in a flue. The denitration device (SCR) is arranged at the upstream of the rotary air preheater, the process principle is that ammonia reacts with nitric oxide in smoke gas to remove the nitric oxide in the smoke gas, the ammonia inevitably escapes in the operation process of the SCR, the escaped ammonia reacts with sulfur dioxide in the smoke gas to generate ammonium bisulfate, and the substance has the characteristics of high dew point temperature, large viscosity and strong corrosivity. When the ammonium bisulfate flows to the cold end of the downstream rotary air preheater along with the flue gas, the temperature is usually lower than the dew point temperature, so that the ammonium bisulfate is condensed and is attached to the surface of a heat exchange element of the rotary air preheater, and fly ash in the flue gas is bonded, and finally a flue and an air channel at the cold end of the rotary air preheater are blocked, so that the resistance of the rotary air preheater is increased, and the resistance is increased to more than 3000Pa in serious cases, thereby increasing air leakage, increasing the power consumption of a fan, stalling the fan, insufficient air supply of a boiler, even forced load operation, and forced shutdown in serious cases, so that the normal operation of.
Because the amount of ammonia in SCR is difficult to control, a part of ammonia escapes and can be mixed with SO in flue gas3By reaction with steam to form (NH)4)HSO4，(NH4)HSO4The condensation on the heat exchange element at the cold end of the rotary air preheater has strong binding capacity, and the surface dust deposition and blockage of the heat exchange element of the rotary air preheater are further aggravated.
As the emission policy of domestic coal-fired units becomes more and more stringent, the ultra-low emission requires NO at the outlet of a chimneyXThe concentration is less than 50mg/m3Therefore, the ammonia injection amount of the boiler denitration system is increased compared with the prior art, the escape rate of ammonia gas is increased, and when the prior boiler burns economic coal with high sulfur content, the ash blockage of the rotary air preheater is particularly easy to cause, and the differential pressure of the rotary air preheater is abnormally increased. When the rotary air preheater normally operates, the differential pressure of the smoke side is ensured to be in a normal range, if the rotary air preheater is blocked, negative pressure fluctuation of a hearth is increased, and meanwhile, the differential pressure of an inlet and an outlet of the smoke side and a secondary air side of the rotary air preheater is increased. When the boiler is serious, the air leakage rate of the rotary air preheater is increased, the smoke exhaust temperature deviation is obviously increased, and the smoke exhaust loss of the boiler is increased. Meanwhile, the increase of the differential pressure of the rotary air preheater causes the increase of the current of a blower, a primary fan and an induced draft fan, and more likely causes the serious problems of fan stall and the like.
In conclusion, the conventional rotary air preheater has the problems of serious ash blockage corrosion and high boiler exhaust gas temperature.
Disclosure of Invention
The invention aims to solve the problems of serious ash blockage corrosion and high boiler exhaust gas temperature of the conventional rotary air preheater, and further provides an anti-blockage system of the rotary air preheater.
The technical scheme of the invention is as follows:
a rotary air preheater anti-blocking system comprises a dust remover 12, a primary air heat exchanger 2, a secondary air heat exchanger 4, a rotary air preheater 7 and a flue 19, wherein an air outlet of the primary air heat exchanger 2 is connected with a primary air inlet 5 at the cold end of the rotary air preheater 7, an air outlet of the secondary air heat exchanger 4 is connected with a secondary air inlet 6 at the cold end of the rotary air preheater 7, a flue gas outlet of the rotary air preheater 7 is connected with an air inlet of a dust remover 12 at the tail end of a boiler, and an air outlet of the dust remover 12 is connected with an air inlet of the next equipment through the flue 19;
the anti-blocking system of the rotary air preheater further comprises a flue gas heat exchanger 13, a circulating pump 14, a circulating water outlet pipeline 20 and a circulating water return pipeline 21, the flue 19 behind the air outlet of the dust remover 12 is provided with the flue gas heat exchanger 13, the circulating water outlet of the flue gas heat exchanger 13 is respectively connected with the water inlet of the primary air heat exchanger 2 and the water inlet of the secondary air heat exchanger 4 through the circulating water outlet pipeline 20, the circulating pump 14 is arranged on the circulating water outlet pipeline 20 or the circulating water return pipeline 21, and the water inlet of the flue gas heat exchanger 13 is respectively connected with the water outlet of the primary air heat exchanger 2 and the water outlet of the secondary air heat exchanger 4.
Furthermore, the anti-blocking system of the rotary air preheater further comprises a hot water heat exchanger 16, a water inlet of the hot water heat exchanger 16 is connected with a circulating water outlet pipeline 20 between the flue gas heat exchanger 13 and the primary air heat exchanger 2, and a water outlet of the hot water heat exchanger 16 is connected with a circulating water return pipeline 21 between the flue gas heat exchanger 13 and the primary air heat exchanger 2.
Furthermore, the anti-blocking system of the rotary air preheater further comprises a water storage tank 15, a secondary water outlet of the hot water heat exchanger 16 is connected with a water inlet of the water storage tank 15, and a secondary water inlet of the hot water heat exchanger 16 is connected with a water supply source.
Furthermore, the anti-blocking system of the rotary air preheater further comprises a heat supply network heat exchanger 17, a circulating water outlet pipeline 20 between the flue gas heat exchanger 13 and the primary air heat exchanger 2 is connected with a water inlet of the heat supply network heat exchanger 17, and a circulating water return pipeline 21 between the flue gas heat exchanger 13 and the primary air heat exchanger 2 is connected with a water outlet of the heat supply network heat exchanger 17.
Further, the anti-blocking system of the rotary air preheater further comprises a heat supply network user 18, a water inlet of the heat supply network user 18 is connected with a secondary water outlet of the heat supply network heat exchanger 17, and a water outlet of the heat supply network user 18 is connected with a secondary water inlet of the heat supply network heat exchanger 17.
Compared with the prior art, the invention has the following effects:
1. the anti-blocking system of the rotary air preheater provided by the invention has the advantages that the temperature of primary air and secondary air is increased, the solidification of ammonium bisulfate is effectively prevented, the ash blocking of the rotary air preheater is prevented, the wind resistance is reduced, and the heat exchange efficiency of the rotary air preheater is improved. The problems of serious ash blockage corrosion of the rotary air preheater and high boiler exhaust gas temperature are effectively solved. Meanwhile, the invention also reduces the exhaust gas temperature and improves the boiler efficiency. Can replace a warm air device, reduce the coal consumption of power generation and reduce the operation cost of the unit. The flue gas waste heat can also be introduced into a hot water heat exchanger and a heat supply network heat exchanger to provide hot water for users and heat supply for users of the heat supply network.
2. The invention provides an adjusting system with advanced principle and simple structure for improving the working condition of a rotary air preheater of a thermal power boiler, which can ensure that the temperature of the cold end of the preheater is always higher than the acid dew point temperature and the ammonium bisulfate dew point temperature, thoroughly solve the problems of blockage and corrosion caused by ammonium bisulfate, solve the problem of corrosion caused by sulfur dioxide, reduce the exhaust gas temperature to the most reasonable level on the basis and comprehensively improve the boiler efficiency.
Drawings
FIG. 1 is a schematic diagram of the anti-clogging system of the rotary air preheater according to the present invention.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1, and the anti-blocking system of the rotary air preheater of the embodiment includes a dust remover 12, a primary air heat exchanger 2, a secondary air heat exchanger 4, a rotary air preheater 7 and a flue 19, an air outlet of the primary air heat exchanger 2 is connected with a primary air inlet 5 at the cold end of the rotary air preheater 7, an air outlet of the secondary air heat exchanger 4 is connected with a secondary air inlet 6 at the cold end of the rotary air preheater 7, a flue gas outlet of the rotary air preheater 7 is connected with an air inlet of a dust remover 12 at the end of a boiler, and an air outlet of the dust remover 12 is connected with an air inlet of the next equipment through the flue 19;
the anti-blocking system of the rotary air preheater further comprises a flue gas heat exchanger 13, a circulating pump 14, a circulating water outlet pipeline 20 and a circulating water return pipeline 21, the flue 19 behind the air outlet of the dust remover 12 is provided with the flue gas heat exchanger 13, the circulating water outlet of the flue gas heat exchanger 13 is respectively connected with the water inlet of the primary air heat exchanger 2 and the water inlet of the secondary air heat exchanger 4 through the circulating water outlet pipeline 20, the circulating pump 14 is arranged on the circulating water outlet pipeline 20 or the circulating water return pipeline 21, and the water inlet of the flue gas heat exchanger 13 is respectively connected with the water outlet of the primary air heat exchanger 2 and the water outlet of the secondary air heat exchanger 4.
The second embodiment is as follows: the embodiment is described with reference to fig. 1, and the anti-blocking system for the rotary air preheater of the embodiment further includes a hot water heat exchanger 16, a water inlet of the hot water heat exchanger 16 is connected to a circulating water outlet pipe 20 between the flue gas heat exchanger 13 and the primary air heat exchanger 2, and a water outlet of the hot water heat exchanger 16 is connected to a circulating water return pipe 21 between the flue gas heat exchanger 13 and the primary air heat exchanger 2.
By the arrangement, the flue gas waste heat from the dust collector 12 is introduced into the hot water heat exchanger 16, so that the hot water heat exchanger can be used in places such as bathrooms and toilets of workers in a power station, the living cost is effectively saved, hot water can be supplied to hot water demanding parties such as a bathing center, and the income is increased. Other components and connections are the same as in the first embodiment.
The third concrete implementation mode: the embodiment is described with reference to fig. 1, and the anti-blocking system for the rotary air preheater of the embodiment further includes a water storage tank 15, a secondary water outlet of the hot water heat exchanger 16 is connected to a water inlet of the water storage tank 15, and a secondary water inlet of the hot water heat exchanger 16 is connected to a water supply source.
With this arrangement, the hot water heated by the hot water heat exchanger 16 is stored in the water storage tank 15 and used for providing hot water to the user. Other compositions and connections are the same as in the first or second embodiments.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 1, and the anti-blocking system of the rotary air preheater of the embodiment further includes a heat supply network heat exchanger 17, a circulating water outlet pipe 20 between the flue gas heat exchanger 13 and the primary air heat exchanger 2 is connected to a water inlet of the heat supply network heat exchanger 17, and a circulating water return pipe 21 between the flue gas heat exchanger 13 and the primary air heat exchanger 2 is connected to a water outlet of the heat supply network heat exchanger 17.
So set up, introduce the flue gas waste heat from dust remover 12 into heat supply network heat exchanger 17 for heat supply network user heating, when having practiced thrift manufacturing cost, still increased and created a profit. Other compositions and connection relationships are the same as in the first, second or third embodiment.
The fifth concrete implementation mode: referring to fig. 1, the present embodiment is described, and the anti-blocking system of the rotary air preheater of the present embodiment further includes a heat supply network user 18, a water inlet of the heat supply network user 18 is connected to a secondary water outlet of the heat supply network heat exchanger 17, and a water outlet of the heat supply network user 18 is connected to a secondary water inlet of the heat supply network heat exchanger 17.
With this arrangement, the hot water heated by the heat supply network heat exchanger 17 is introduced to the heat supply network users 18 for heating the heat supply network users. Other compositions and connection relationships are the same as those in the first, second, third or fourth embodiment.
Principle of operation
The working principle of the anti-blocking system of the rotary air preheater of the present invention is described with reference to fig. 1: the primary air 1 flows through the primary air heat exchanger 2, enters the rotary air preheater 7 from the primary air inlet 5 of the rotary air preheater 7, then flows out from the primary air outlet 8 of the rotary air preheater 7, the secondary air 3 flows through the secondary air heat exchanger 4, enters the rotary air preheater 7 from the secondary air inlet 6 of the rotary air preheater 7, then flows out from the secondary air outlet 9 of the rotary air preheater 7, the flue gas enters the rotary air preheater 7 from the flue gas inlet 10 of the rotary air preheater 7, then flows out from the flue gas outlet 11 of the rotary air preheater 7, the flowing flue gas flows through the dust remover 12 at the tail end of the boiler, the flue gas heat exchanger 13 is additionally arranged on the flue 19 behind the air outlet of the dust remover 12, and the flue gas waste heat from the dust remover 12 is respectively introduced into the primary air heat exchanger 2 and the secondary air heat exchanger 4, thereby improving the inlet air temperature of the primary air 1 and the secondary air 3 at the cold end of the rotary air preheater 7. The temperature of the heat storage element at the cold end of the rotary air preheater 7 is above the dew point of the ammonium bisulfate, so that the condensation of the ammonium bisulfate is prevented. The air temperature is raised to the ammonium bisulfate melting temperature, so that the ammonium bisulfate adhered to the heat storage element of the rotary air preheater 7 starts to melt and fall off, and the pressure difference of the rotary air preheater 7 starts to slowly recover to be normal.
The above examples are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments without departing from the spirit or scope of the present invention.
Claims (5)
1. A rotary air preheater anti-blocking system comprises a dust remover (12), a primary air heat exchanger (2), a secondary air heat exchanger (4), a rotary air preheater (7) and a flue (19), wherein an air outlet of the primary air heat exchanger (2) is connected with a primary air inlet (5) at the cold end of the rotary air preheater (7), an air outlet of the secondary air heat exchanger (4) is connected with a secondary air inlet (6) at the cold end of the rotary air preheater (7), a flue gas outlet of the rotary air preheater (7) is connected with an air inlet of a dust remover (12) at the tail end of a boiler, and an air outlet of the dust remover (12) is connected with an air inlet of the next equipment through the flue (19);
the method is characterized in that: the anti-blocking system of the rotary air preheater further comprises a flue gas heat exchanger (13), a circulating pump (14), a circulating water outlet pipeline (20) and a circulating water return pipeline (21), the flue (19) behind the air outlet of the dust remover (12) is provided with the flue gas heat exchanger (13), the circulating water outlet of the flue gas heat exchanger (13) is respectively connected with the water inlet of the primary air heat exchanger (2) and the water inlet of the secondary air heat exchanger (4) through the circulating water outlet pipeline (20), the circulating pump (14) is arranged on the circulating water outlet pipeline (20) or the circulating water return pipeline (21), and the water inlet of the flue gas heat exchanger (13) is respectively connected with the water outlet of the primary air heat exchanger (2) and the water outlet of the secondary air heat exchanger (4) through the circulating.
2. A rotary air preheater anti-blocking system as claimed in claim 1, wherein: the anti-blocking system of the rotary air preheater further comprises a hot water heat exchanger (16), a water inlet of the hot water heat exchanger (16) is connected with a circulating water outlet pipeline (20) between the flue gas heat exchanger (13) and the primary air heat exchanger (2), and a water outlet of the hot water heat exchanger (16) is connected with a circulating water return pipeline (21) between the flue gas heat exchanger (13) and the primary air heat exchanger (2).
3. A rotary air preheater anti-blocking system as claimed in claim 2, wherein: the rotary air preheater anti-blocking system further comprises a water storage tank (15), a secondary water outlet of the hot water heat exchanger (16) is connected with a water inlet of the water storage tank (15), and a secondary water inlet of the hot water heat exchanger (16) is connected with a water supply source.
4. A rotary air preheater anti-clogging system as claimed in claim 1 or 3, wherein: the anti-blocking system of the rotary air preheater further comprises a heat supply network heat exchanger (17), a circulating water outlet pipeline (20) between the flue gas heat exchanger (13) and the primary air heat exchanger (2) is connected with a water inlet of the heat supply network heat exchanger (17), and a circulating water return pipeline (21) between the flue gas heat exchanger (13) and the primary air heat exchanger (2) is connected with a water outlet of the heat supply network heat exchanger (17).
5. A rotary air preheater anti-blocking system as claimed in claim 4, wherein: the anti-blocking system of the rotary air preheater further comprises a heat supply network user (18), a water inlet of the heat supply network user (18) is connected with a secondary water outlet of the heat supply network heat exchanger (17), and a water outlet of the heat supply network user (18) is connected with a secondary water inlet of the heat supply network heat exchanger (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011426698.5A CN112460625A (en) | 2020-12-09 | 2020-12-09 | Anti-blocking system of rotary air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011426698.5A CN112460625A (en) | 2020-12-09 | 2020-12-09 | Anti-blocking system of rotary air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112460625A true CN112460625A (en) | 2021-03-09 |
Family
ID=74801705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011426698.5A Pending CN112460625A (en) | 2020-12-09 | 2020-12-09 | Anti-blocking system of rotary air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112460625A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113739190A (en) * | 2021-09-08 | 2021-12-03 | 中电投新疆能源化工集团五彩湾发电有限责任公司 | Anti-blocking system of rotary air preheater |
-
2020
- 2020-12-09 CN CN202011426698.5A patent/CN112460625A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113739190A (en) * | 2021-09-08 | 2021-12-03 | 中电投新疆能源化工集团五彩湾发电有限责任公司 | Anti-blocking system of rotary air preheater |
| CN113739190B (en) * | 2021-09-08 | 2024-05-28 | 中电投新疆能源化工集团五彩湾发电有限责任公司 | Anti-blocking system of rotary air preheater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102305413B (en) | Exhaust gas waste heat recovery and emission reduction comprehensive application system for coal-fired boiler in thermal power plant | |
| CN107642793A (en) | Prevent ammonium hydrogen sulfate from blocking the system and method for air preheater after SCR denitration transformation | |
| CN109340811A (en) | A kind of rotary regenerative air preheater counterflow heat exchange anti-block apparatus | |
| CN103363536A (en) | Low temperature electric precipitation system in fuel electric plant | |
| CN106287773A (en) | A kind of special residual neat recovering system of WGGH | |
| CN105402761A (en) | Deep coupling utilization system for turbine steam exhaust waste heat and boiler flue gas waste heat | |
| CN110986031B (en) | System for avoiding water vapor condensation in gas boiler flue gas recirculation pipeline | |
| CN210568553U (en) | Boiler flue gas treatment system | |
| CN112460625A (en) | Anti-blocking system of rotary air preheater | |
| CN109882879B (en) | Full operating mode flue gas denitration and air preheater anti-blocking system | |
| CN205447779U (en) | Prevent gas temperature governing system of SCR flue gas denitration system sintering of catalyst | |
| CN210568552U (en) | Boiler energy-saving and flue gas whitening system | |
| CN210688301U (en) | Novel flue gas recirculation system | |
| CN213713118U (en) | Anti-blocking system of rotary air preheater | |
| CN109084322A (en) | A method of prevent coal-fired power station boiler rotary regenerative air preheater heat accumulating element from blocking | |
| CN204730235U (en) | A kind of high-pressure water flushing device for air preheater, air preheating system | |
| CN204756887U (en) | High -efficient hot media water system of circulating fluidized bed boiler | |
| CN108679595B (en) | Boiler of thermal power plant and air heater anti-blocking system thereof | |
| CN208735652U (en) | The eliminating white smoke system that a kind of heat exchanger and air preheater combine | |
| CN110145754A (en) | It can prevent the boiler flue gas treatment system and method for back-end surfaces low-temperature corrosion | |
| CN204901735U (en) | Heat exchanger boiler waste heat utilization economizer | |
| CN212691723U (en) | Power plant boiler water wall anticorrosion is air preheater jam treatment system in coordination | |
| CN111609393B (en) | Boiler synergy integration system | |
| CN209909952U (en) | Full operating mode flue gas denitration and air preheater prevent stifled system | |
| CN105889899A (en) | Superheated steam temperature adjusting system and method suitable for SCR low-load operation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |