CN205535924U - Rotation air preheater flue gas prevents against current that ammonium hydrogen sulfate blocks up device - Google Patents
Rotation air preheater flue gas prevents against current that ammonium hydrogen sulfate blocks up device Download PDFInfo
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- CN205535924U CN205535924U CN201620187185.6U CN201620187185U CN205535924U CN 205535924 U CN205535924 U CN 205535924U CN 201620187185 U CN201620187185 U CN 201620187185U CN 205535924 U CN205535924 U CN 205535924U
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- 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
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Abstract
The utility model relates to a rotation air preheater flue gas prevents against current that ammonium hydrogen sulfate blocks up device. Still there is not one kind to prevent that the cold junction from corroding and NH4HSO4 sedimentary rotation air preheater anti -clogging device on cold junction heat accumulation component at present. The utility model discloses a flue is drawn forth to the flue gas, is equipped with the air preheater in air branch storehouse and flue gas branch storehouse, and its characteristics are: still including flue gas against the current advance the tobacco pipe, against the current the flue gas go out tobacco pipe and gas cooler, be equipped with following current flue gas storehouse and flue gas storehouse against the current in the flue gas branch storehouse, the import and the export in following current flue gas storehouse is located the hot junction and the cold junction of air preheater respectively, import and the export in flue gas storehouse are located the cold junction and the hot junction of air preheater respectively against the current, the flue gas advances the one end of tobacco pipe and the access connection that flue connection, the other end and adverse current flue gas storehouse were drawn forth to the flue gas against the current, the flue gas goes out the one end of tobacco pipe and the exit linkage in adverse current flue gas storehouse against the current. The utility model discloses can prevent that the air preheater cold junction from corroding and NH4HSO4 deposit on cold junction heat accumulation component causes the jam.
Description
Technical field
This utility model relates to a kind of rotary regenerative air heater flue gas adverse current anti-ammonium hydrogen sulfate blocking device, it is adaptable in coal-burning boiler rotary regenerative air heater cold end corrosion and blocking Processing tecchnics.
Background technology
Burn in the boiler any kind of coal when all can produce SO3, produced SO3Amount can be the highest from the 30-40ppm of several ppm of low-sulfur coal to sulphur coal.The SCR(being commonly used to denitrating flue gas at present is selective-catalytic-reduction denitrified) technology also can increase the SO of power plant3Total amount, when there is catalyst, NOx and NH3While (ammonia) reaction is reduced into nitrogen and water, a fraction of SO2SO can be oxidized into3.In SCR reactor, SO2Oxidized ratio, according to the difference of catalyst, changes in the range of 0.3-2%.
In hot environment at boiler export, SO3Exist as a vapor.When the temperature of flue gas is cooled to below 310-370 DEG C, and affected by the water capacity in flue gas, SO in flue gas3Because being generated sulfuric acid vapor by aquation.In air preheater downstream, when flue gas mean temperature reduces to 140-160 DEG C, major part SO3It is all presented in sulfuric acid vapor.
Generally, the flue-gas temperature of air preheater outlet is maintained at higher 10-15 DEG C than acid dew point, has a certain amount of leaking out with the equipment and flue allowing downstream.After SCR puts into operation, due to SO in flue gas3The increase of concentration, acid dew-point temperature may improve 5.0-10 DEG C.If the outlet temperature of air preheater is not correspondingly improved, then the danger of the acid corrosion of the equipment in downstream also can increase.Cigarette temperature in air preheater is reduced to 175-220 DEG C, SO3With ammonia (NH3) exist, and SO simultaneously3Molar concentration higher than NH3Molar concentration time, will react generation NH4HSO4, i.e. ammonium hydrogen sulfate.NH4HSO4It is a kind of sticking solid, therefore can stain air preheater, also can continue to increase the pressure drop of air preheater, ultimately result in compressor emergency shutdown, air preheater is carried out.When underload, SO in SCR2It is oxidized to SO3Amount can sharply increase, meanwhile, from air preheater discharge flue-gas temperature the most relatively low, SO3Contamination and corrosion to air preheater will become the most serious.
For power plant, when setting up SCR system, the air preheater to power plant carries out the transformation that cold end is replaced with the heat accumulating element of plating enamel paint the most simultaneously, has both ensured antiseptic effect, is also convenient for easily generating band viscosity NH4HSO4The region of deposition is carried out.Although the cold end transformation to air preheater can slow down because of NH4HSO4The corrosion caused and blocking, but can not fundamentally solve this problem, the most in the winter time or during underload, particularly problematic.Air preheater on-line rinsing and steam air heater persistently put into operation frequently, have both increased the weight of boiler operatiopn maintenance load, have also improved operation and maintenance cost, and even some steam air heater of utility boiler occurs in that the not enough situation of drawing gas in supply vapour source.
There is presently no a kind of reasonable in design, improve air preheater cold junction temperature, prevent air preheater cold end corrosion and NH4HSO4Cold end heat accumulating element deposits the rotary regenerative air heater flue gas adverse current anti-ammonium hydrogen sulfate blocking device resulted in blockage.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency present in prior art, and provides a kind of reasonable in design, improves air preheater cold junction temperature, prevents air preheater cold end corrosion and NH4HSO4Cold end heat accumulating element deposits the rotary regenerative air heater flue gas adverse current anti-ammonium hydrogen sulfate blocking device resulted in blockage.
nullThe technical scheme in the invention for solving the above technical problem is: this rotary regenerative air heater flue gas adverse current anti-ammonium hydrogen sulfate blocking device includes that flue gas draws flue、Air preheater、Following current flue gas smoke flue and electrostatic precipitator，Described air preheater is provided with air point storehouse and flue gas point storehouse，Its construction features is: also include countercurrent flue gas smoke-intake pipe、Countercurrent flue gas pipe、Flow control valve、Booster fan and gas cooler，Described flue gas point storehouse is provided with following current flue gas storehouse and countercurrent flue gas storehouse，The inlet and outlet in described following current flue gas storehouse lays respectively at the hot junction of air preheater and cold end，The inlet and outlet in described countercurrent flue gas storehouse lays respectively at cold end and the hot junction of air preheater，The import of one end and following current flue gas storehouse that described flue gas draws flue connects，One end of described following current flue gas smoke flue and the outlet in following current flue gas storehouse connect，The other end of this following current flue gas smoke flue and electrostatic precipitator connect，One end of described countercurrent flue gas smoke-intake pipe and flue gas are drawn flue and are connected，The other end of this countercurrent flue gas smoke-intake pipe and the import in countercurrent flue gas storehouse connect，Described flow control valve and booster fan are installed on countercurrent flue gas smoke-intake pipe，One end of described countercurrent flue gas pipe and the outlet in countercurrent flue gas storehouse connect，The other end of this countercurrent flue gas pipe and electrostatic precipitator connect，Described gas cooler is arranged on countercurrent flue gas pipe.
As preferably, this utility model also includes that countercurrent flue gas bootstrap system, described countercurrent flue gas bootstrap system and gas cooler connect.
As preferably, air point storehouse described in the utility model is provided with primary air storehouse and auxiliary air storehouse.
As preferably, the other end of following current flue gas smoke flue described in the utility model and the other end of countercurrent flue gas pipe are connected with electrostatic precipitator after collecting again.
As preferably, countercurrent flue gas bootstrap system described in the utility model is the low adding system of steam turbine.
This utility model compared with prior art, has the following advantages and effect: reasonable in design, fundamentally solves and generates NH in rotary regenerative air heater in a large number4HSO4Problem, improve the cold junction temperature of air preheater, prevent cold end corrosion and NH4HSO4The heat accumulating element of cold end deposits and results in blockage, air preheater fume side is partitioned into a part of as countercurrent flue gas point storehouse, draw part air preheater entrance high-temperature flue gas and enter, heating air preheater cold end heat accumulating element rapidly from cold end adverse current, improve cold end ambient temperature.
This utility model is in use, the flue gas that portion temperature can first be higher than 350 DEG C is drawn, enter air preheater from countercurrent flue gas storehouse that air preheater fume side splits, the cold end of air preheater (temperature is about 65 DEG C) that quickly heating proceeds to from air side, to safe temperature, eliminates NH4HSO4A large amount of environment produced.The countercurrent flue gas (temperature is about 300 DEG C) out from the countercurrent flue gas storehouse of air preheater, subsequently enter gas cooler, being cooled down by countercurrent flue gas bootstrap system, own temperature is reduced to close with air preheater outlet following current flue-gas temperature, and this partial heat is reclaimed by countercurrent flue gas bootstrap system.Because of countercurrent flue gas produced by longer flue and gas cooler between air preheater entrance and electrostatic precipitator export with the pressure reduction of following current flue gas, the booster fan set up on countercurrent flue gas smoke-intake pipe compensate.This utility model, by partial fume adverse current, eliminates NH4HSO4Generate and be deposited on air preheater the environment of blocking corrosion air preheater in a large number, and with the consequent energy loss of gas cooler high efficiente callback, solve rotary regenerative air heater NH with less cost4HSO4The problem of cold end corrosion blocking.
Accompanying drawing explanation
Fig. 1 is the structural representation of rotary regenerative air heater flue gas adverse current anti-ammonium hydrogen sulfate blocking device in this utility model embodiment.
Fig. 2 is point storehouse module segmentation schematic diagram of the air preheater in this utility model embodiment.
Fig. 3 a is air preheater in this utility model embodiment when running in air, metal and the flue-gas temperature scattergram with air preheater height, for air preheater properly functioning time air with high temperature distribution schematic diagram.
Fig. 3 b is air preheater in this utility model embodiment when running in air, metal and the flue-gas temperature scattergram with air preheater height, for air preheater properly functioning time metal with high temperature distribution schematic diagram.
Fig. 3 c is air preheater in this utility model embodiment when running in air, metal and the flue-gas temperature scattergram with air preheater height, for air preheater properly functioning time flue gas with high temperature distribution schematic diagram.
When Fig. 3 d is the air preheater operation in this utility model embodiment in air, metal and the flue-gas temperature scattergram with air preheater height, when putting into operation for air preheater part adverse current, cold end flue gas, metal and comprehensive exhaust gas temperature are with high temperature distribution schematic diagram.
Fig. 4 is the structural representation of countercurrent flue gas bootstrap system in this utility model embodiment.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following example are that this utility model is not limited to following example to explanation of the present utility model.
Embodiment.
Seeing Fig. 1 to Fig. 4, the rotary regenerative air heater flue gas adverse current anti-ammonium hydrogen sulfate blocking device in the present embodiment includes that flue gas draws flue 1, air preheater 2, following current flue gas smoke flue 3, electrostatic precipitator 4, countercurrent flue gas smoke-intake pipe 5, countercurrent flue gas pipe 6, countercurrent flue gas bootstrap system 7, flow control valve 8, booster fan 9 and gas cooler 10.
The air preheater 2 of the present embodiment is provided with air point storehouse 21 and flue gas point storehouse 22, air point storehouse 21 is provided with primary air storehouse 23 and auxiliary air storehouse 24, flue gas point storehouse 22 is provided with following current flue gas storehouse 25 and countercurrent flue gas storehouse 26, the inlet and outlet in following current flue gas storehouse 25 lays respectively at hot junction 27 and the cold end 28 of air preheater 2, and the inlet and outlet in countercurrent flue gas storehouse 26 lays respectively at cold end 28 and the hot junction 27 of air preheater 2.
In the present embodiment, the import of one end and following current flue gas storehouse 25 that flue gas draws flue 1 connects, one end of following current flue gas smoke flue 3 and the outlet in following current flue gas storehouse 25 connect, the other end and the electrostatic precipitator 4 of this following current flue gas smoke flue 3 connect, one end of countercurrent flue gas smoke-intake pipe 5 and flue gas are drawn flue 1 and are connected, the other end of this countercurrent flue gas smoke-intake pipe 5 and the import in countercurrent flue gas storehouse 26 connect, flow control valve 8 and booster fan 9 are installed on countercurrent flue gas smoke-intake pipe 5, one end of countercurrent flue gas pipe 6 and the outlet in countercurrent flue gas storehouse 26 connect, the other end and the electrostatic precipitator 4 of this countercurrent flue gas pipe 6 connect, gas cooler 10 is arranged on countercurrent flue gas pipe 6, countercurrent flue gas bootstrap system 7 and gas cooler 10 connect.
Under normal circumstances, the other end of following current flue gas smoke flue 3 and the other end of countercurrent flue gas pipe 6 are connected with electrostatic precipitator 4 after collecting again；Countercurrent flue gas bootstrap system 7 can be the low adding system of steam turbine.Air preheater is air preheater, and ammonium hydrogen sulfate is NH4HSO4。
Countercurrent flue gas smoke-intake pipe 5 in the present embodiment is according to site space reasonable Arrangement, it is ensured that can be by enough exhaust gas volumns under rational resistance.Flow control valve 8 is set on countercurrent flue gas smoke-intake pipe 5, according to regulating the exhaust gas volumn flow of countercurrent flue gas under the conditions of different load, meets NH4HSO4The not technological requirement of deposition on heat accumulating element.
The present embodiment is partitioned into part as countercurrent flue gas storehouse 26 in air preheater 2 fume side near inlet side, import and export and seal respectively, import is the outlet (generally in the lower section of air preheater 2) of original air preheater 2, it is connected with countercurrent flue gas smoke-intake pipe 5, outlet is the entrance (generally above air preheater 2) of original air preheater 2, is connected with gas cooler 10.Countercurrent flue gas is longer than following current flue gas because of flowed through flue, and can being compensated by the booster fan 9 set up with following current flue gas pressure reduction with electrostatic precipitator 4 entrance before air preheater 2 of needing that gas cooler 10 produces.
Outlet (generally in the lower section of air preheater 2) the cigarette receiving Gas Cooler 10 in the countercurrent flue gas storehouse 26 in the present embodiment, condensed by the low adding system of steam turbine and be water-cooled to countercurrent flue gas and air preheater 2 to export following current flue gas close, return the low of higher level after condensing water heat absorption intensification to add, it is achieved heat recovery.This partial heat is needed, it is also possible to be replaced with the countercurrent flue gas bootstrap system 7 of other forms if any other place.
In the present embodiment, the cold end heat accumulating element of air preheater 2 is mainly quickly heated in the effect of countercurrent flue gas storehouse 26 and auxiliary facility thereof by part high-temperature flue gas adverse current, needs flue gas acid dew point that the degree of heating determines or required comprehensive flue-gas temperature (T according to smoke componentsComprehensively=TFlue gas+ TMetal, characterize NH4HSO4Condensation deposition characteristics) determine, degree of heat refers to be in heat accumulating element calculate in safe temperature range according to smoke components, thus draw the amount of the high-temperature flue gas before the air preheater 2 of required extraction, and flow control valve 8 is installed, according to the exhaust gas volumn needed for different operating conditions.The size in countercurrent flue gas storehouse 26 determines according to the heat transfer characteristic of high-temperature flue gas with heat accumulating element, it is ensured that have enough heat-exchange times to complete heat transfer process in countercurrent flue gas storehouse 26.After determining the size in countercurrent flue gas storehouse 26, splitting in fume side upstream, seal approach is taked at edge, countercurrent flue gas storehouse 26.
Due to the flue gas flow direction in countercurrent flue gas storehouse 26 from cold end 28 to hot junction 27, cold end 28 can be heated rapidly by high-temperature flue gas, flue-gas temperature also can decline rapidly, to flue-gas temperature during hot junction 27 close to the temperature of even below heat accumulating element, occurring that hot junction heat accumulating element adds the situation of heat smoke, minimum flue-gas temperature should occur in the centre position of air preheater 2.So the outlet exhaust gas temperature in countercurrent flue gas storehouse 26 higher (generally greater than 200 DEG C), need to set up again a gas cooler 10 flue-gas temperature is reduced to the outlet following current flue gas of air preheater 2 after flue-gas temperature close to the gas approach of rear remittance electrostatic precipitator 4.For station boiler, cooling medium in countercurrent flue gas bootstrap system 7 can use the condensation water of the low adding system of steam turbine, carry out coolant-temperature gage to determine according to acid dew point and the water dew point of flue gas, ensure higher than flue gas acid dew point, the water that condenses after being heated up returns the low adding system of suitable higher level according to its temperature, it is achieved the purpose of heat recovery.
Owing to the flue gas of reflux fraction needs to flow through longer flue and gas cooler 10, the flue gas that resistance drop compares following current part is big, and two parts flue gas finally to converge before electrostatic precipitator 4, carries out follow-up dust-removal and desulfurizing program.Accordingly, it would be desirable to install a booster fan 9 on its countercurrent flue gas pipe 6 to exceed the resistance drop of following current flue gas to compensate countercurrent flue gas, booster fan 9 determines according to countercurrent flue gas amount and its resistance drop increased.
As shown in Figure 1, it is divided into following current flue gas and countercurrent flue gas two parts before the boiler tail flue gas entrance air preheater 2 that economizer comes, following current flue gas flows to following current flue gas storehouse 25 by original, and countercurrent flue gas reversely walks countercurrent flue gas storehouse 26, and countercurrent flue gas amount is controlled by flow control valve 8.Countercurrent flue gas enters gas cooler 10 after air preheater 2 flows out, and is cooled to air preheater 2 that to export forward flow temperature close by the low water (water temperature be higher than flue gas acid dew point) that adds of steam turbine, and the flue gas after cooling returns the following current flue gas of former flue and outflow air preheater 2 and converges.By the steam turbine of flue gas low add water return the low of higher level add.A booster fan 9 is set up on countercurrent flue gas smoke-intake pipe 5, under conditions of ensureing that exhaust gas volumn requires, compensate because of countercurrent flue gas flow through flue length and will through gas cooler 10 produce with following current flue gas before air preheater 2 with electrostatic precipitator 4 before pressure reduction, make following current flue gas identical with point static pressure with countercurrent flue gas split point.Countercurrent flue gas Btu utilization mode after air preheater 2 flows out is not limited to add the low pressure condensation water of Hot gas turbine, this partial heat can also be used for heat supply if any demands such as heat supplies.
As in figure 2 it is shown, the countercurrent flue gas storehouse 26 of air preheater 2 is in the downstream of air side, the coldest end of the most former air preheater 2.Original sealing is had, it is not necessary to carry out special handling, between countercurrent flue gas storehouse 26 and following current flue gas storehouse 25, take suitable sealing means to seal between countercurrent flue gas storehouse 26 and air side.
As it is shown on figure 3, Fig. 3 a display air side air themperature increases along with the height of air preheater 2 and increases, i.e. along with flowing to temperature rising；Fig. 3 b display air preheater 2 metal temperature increases along with the height of air preheater 2 and increases, and is distributed in the same direction with air themperature；Fig. 3 c display fume side flue-gas temperature increases along with the height of air preheater 2 and reduces, and i.e. flows to temperature with it and reduces.On sustained height, air, metal, flue-gas temperature raise successively, it is achieved flue gas carries heat to metal, and metal box air conveying heat, final flue gas carries heat to air.Fig. 3 d shows that the metal in countercurrent flue gas storehouse 26, flue-gas temperature are distributed, high-temperature reflux flue gas enters air preheater 2 bottom-heated cold side metal, and own temperature reduces rapidly, and it is identical with metal temperature that middle part is reduced to temperature, then it is heated, finally from the top discharge of air preheater 2.Bottom air preheater 2 (h/H=0) cold side metal directly with high-temperature flue gas heat exchange, heat transfer temperature difference is big, and soon, comprehensive flue-gas temperature is higher for heating rate.Now, although metal temperature is low, NH is easily deposited4HSO4, but flue-gas temperature is high, NH4HSO4Do not generate.Flue-gas temperature and the metal temperature at air preheater 2 top (h/H=1) are the highest, both will not generate NH4HSO4, more will not deposit.In the middle part of the air preheater 2 that flue-gas temperature is equal with metal temperature, produce the position that a comprehensive flue-gas temperature is minimum, design comprehensive flue-gas temperature at this and, higher than safe temperature, can ensure not produce NH4HSO4Generate depositional phenomenon.
As shown in Figure 4, from steam turbine low-temperature heating system, a certain amount of temperature condensation water (t higher than flue gas acid dew point more than 5-10 DEG C is drawn in suitable position4/Q4, can be that a single point is drawn, it is also possible to be two some t1/Q1、t2/Q2It is mixed into), it is used for cooling down countercurrent flue gas, self-temperature heat absorption raises.Countercurrent flue gas to ensure to be cooled to close with following current flue-gas temperature, in order to converges therewith.Condensation water after Bei Jiare returns former condensation water main road, and the temperature condensing water after heating is higher than the condensing water temperature importing point, i.e. t in figure5≥t3.The used access condensing water of cooled flue gas picks out a little and water consumption is determined by the heat exchange area of exhaust gas volumn, flue-gas temperature and gas cooler, with energy-conservation with heat-transfer surface connection and reasonable arrangement as restrictive condition.If there being heat supply, then it is to directly heat heat supply backwater, confesses again after heat temperature raising.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, be named title etc. can be different, and the above content described in this specification is only to this utility model structure example explanation.All equivalence changes done according to structure, feature and the principle described in this utility model inventional idea or simple change, be all included in the protection domain of this utility model patent.Described specific embodiment can be made various amendment or supplements or use similar mode to substitute by this utility model person of ordinary skill in the field; without departing from structure of the present utility model or surmount scope defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (5)
- null1. a rotary regenerative air heater flue gas adverse current anti-ammonium hydrogen sulfate blocking device，Flue is drawn including flue gas、Air preheater、Following current flue gas smoke flue and electrostatic precipitator，Described air preheater is provided with air point storehouse and flue gas point storehouse，It is characterized in that: also include countercurrent flue gas smoke-intake pipe、Countercurrent flue gas pipe、Flow control valve、Booster fan and gas cooler，Described flue gas point storehouse is provided with following current flue gas storehouse and countercurrent flue gas storehouse，The inlet and outlet in described following current flue gas storehouse lays respectively at the hot junction of air preheater and cold end，The inlet and outlet in described countercurrent flue gas storehouse lays respectively at cold end and the hot junction of air preheater，The import of one end and following current flue gas storehouse that described flue gas draws flue connects，One end of described following current flue gas smoke flue and the outlet in following current flue gas storehouse connect，The other end of this following current flue gas smoke flue and electrostatic precipitator connect，One end of described countercurrent flue gas smoke-intake pipe and flue gas are drawn flue and are connected，The other end of this countercurrent flue gas smoke-intake pipe and the import in countercurrent flue gas storehouse connect，Described flow control valve and booster fan are installed on countercurrent flue gas smoke-intake pipe，One end of described countercurrent flue gas pipe and the outlet in countercurrent flue gas storehouse connect，The other end of this countercurrent flue gas pipe and electrostatic precipitator connect，Described gas cooler is arranged on countercurrent flue gas pipe.
- Rotary regenerative air heater flue gas adverse current the most according to claim 1 anti-ammonium hydrogen sulfate blocking device, it is characterised in that: also include that countercurrent flue gas bootstrap system, described countercurrent flue gas bootstrap system and gas cooler connect.
- Rotary regenerative air heater flue gas adverse current the most according to claim 1 anti-ammonium hydrogen sulfate blocking device, it is characterised in that: described air point storehouse is provided with primary air storehouse and auxiliary air storehouse.
- Rotary regenerative air heater flue gas adverse current the most according to claim 1 anti-ammonium hydrogen sulfate blocking device, it is characterised in that: the described other end of following current flue gas smoke flue and the other end of countercurrent flue gas pipe are connected with electrostatic precipitator after collecting again.
- Rotary regenerative air heater flue gas adverse current the most according to claim 2 anti-ammonium hydrogen sulfate blocking device, it is characterised in that: described countercurrent flue gas bootstrap system is the low adding system of steam turbine.
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| CN201620187185.6U CN205535924U (en) | 2016-03-11 | 2016-03-11 | Rotation air preheater flue gas prevents against current that ammonium hydrogen sulfate blocks up device |
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| CN107120675A (en) * | 2017-06-14 | 2017-09-01 | 天津国电津能热电有限公司 | A kind of air and gas system and air preheater cold end control method |
| CN107158925A (en) * | 2017-07-05 | 2017-09-15 | 山西新唐工程设计股份有限公司 | A kind of SCR boilers air preheater anti-blocking method |
| CN107191963A (en) * | 2017-07-10 | 2017-09-22 | 东方电气集团东方锅炉股份有限公司 | A kind of method that rotary regenerative air preheater and the anti-ammonium hydrogen sulfate of the rotary regenerative air preheater are blocked |
| CN107965788A (en) * | 2017-11-13 | 2018-04-27 | 湖南大唐节能科技有限公司 | Double heat source air preheaters block controlling device |
| CN108006692A (en) * | 2017-10-13 | 2018-05-08 | 南京博沃科技发展有限公司 | A kind of recycle carries the anti-blocking air preheater of progress that leaks out and directly leak out |
| CN112710004A (en) * | 2021-01-29 | 2021-04-27 | 西安热工研究院有限公司 | System and method for preventing ammonium bisulfate ash accumulation and blockage of rotary air preheater |
| WO2021109448A1 (en) * | 2019-12-02 | 2021-06-10 | 南京凯盛国际工程有限公司 | Self-resolving scr denitration system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107120675A (en) * | 2017-06-14 | 2017-09-01 | 天津国电津能热电有限公司 | A kind of air and gas system and air preheater cold end control method |
| CN107158925A (en) * | 2017-07-05 | 2017-09-15 | 山西新唐工程设计股份有限公司 | A kind of SCR boilers air preheater anti-blocking method |
| CN107191963A (en) * | 2017-07-10 | 2017-09-22 | 东方电气集团东方锅炉股份有限公司 | A kind of method that rotary regenerative air preheater and the anti-ammonium hydrogen sulfate of the rotary regenerative air preheater are blocked |
| CN107191963B (en) * | 2017-07-10 | 2023-07-25 | 东方电气集团东方锅炉股份有限公司 | Rotary air preheater and method for preventing ammonium bisulfate from being blocked by rotary air preheater |
| CN108006692A (en) * | 2017-10-13 | 2018-05-08 | 南京博沃科技发展有限公司 | A kind of recycle carries the anti-blocking air preheater of progress that leaks out and directly leak out |
| CN108006692B (en) * | 2017-10-13 | 2019-06-07 | 南京博沃科技发展有限公司 | A kind of recycling carrying, which leaks out and directly leaks out, carries out anti-blocking air preheater |
| CN107965788A (en) * | 2017-11-13 | 2018-04-27 | 湖南大唐节能科技有限公司 | Double heat source air preheaters block controlling device |
| WO2021109448A1 (en) * | 2019-12-02 | 2021-06-10 | 南京凯盛国际工程有限公司 | Self-resolving scr denitration system |
| CN112710004A (en) * | 2021-01-29 | 2021-04-27 | 西安热工研究院有限公司 | System and method for preventing ammonium bisulfate ash accumulation and blockage of rotary air preheater |
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Effective date of registration: 20171219 Address after: Xihu District West Lake science and Technology Park West nine road Hangzhou City, Zhejiang province 310030 No. 2 Patentee after: Hangzhou Huadian Energy Engineering Co., Ltd. Address before: Hangzhou City, Zhejiang Province, 310030 Xihu District science and Technology Park of West Lake Park Road, No. 10 Patentee before: China Huadian Electric Research Institute |
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