CN205235766U - Automatic control SCR flue gas denitration urea pyrolysis system - Google Patents
Automatic control SCR flue gas denitration urea pyrolysis system Download PDFInfo
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- CN205235766U CN205235766U CN201521140315.2U CN201521140315U CN205235766U CN 205235766 U CN205235766 U CN 205235766U CN 201521140315 U CN201521140315 U CN 201521140315U CN 205235766 U CN205235766 U CN 205235766U
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model discloses an automatic control SCR flue gas denitration urea pyrolysis system, characterized by sets up gas heat exchanger and forms the air heating unit in electrostatic precipitator's imported flue, arrange in the boiler that a set of flue gas heating pipe set forms air hot cell again, the heating of air channel qi gas heat exchanger, and the heat source temperature that reaches the urea pyrolysis required after flue gas heating pipe set reheat becomes high temperature air, high temperature air sends into at the urea pyrolysis oven and spouts and produces ammonia air mixing gas into the mixed pyrolysis of atomizing urea solution, ammonia air mixing gas spouts the imported flue into SCR denitration reactor through AIG ammonia injection grid. The utility model discloses technological structure is simple, can extensively be arranged in coal fired power plant SCR denitrification facility, effectively improves urea atomizing pyrolysis efficiency and thoroughly solves the crystallization and block up the problem, realizes flue gas waste heat utilization and carries the high static electricity dust collection efficiency, saving desulfurization system's water.
Description
Technical field
The utility model relates to a kind of SCR denitrating flue gas urea pyrolysis system of automatically controlling, and belongs to power plant for energy conservation emission-reduction technology field.
Background technology
SCR SCR denitration technology is that certain density reducing agent NH3 is sprayed in flue and mixed with flue gas,In reactor, under catalyst action, reaction generates nontoxic N2 and H2O. Because technology maturation, denitration efficiency are high, quiltBeing known as is the most effective coal-fired flue gas denitration method. In current SCR method denitration technology, reducing agent mainly contains three kinds: liquefied ammonia,Ammoniacal liquor and urea. Liquefied ammonia belongs to hazardous chemical, its transport and memory requirement harshness. Ammoniacal liquor is also deposited in transport and storage processIn potential safety hazard, increasing power plant starts to tend to urea pyrolysis Ammonia Process. Urea pyrolysis ammonia processed will configureUrea liquid sprays in pyrolysis oven, heats by electric heater, and under 350～600 DEG C of environment of high temperature, urea liquid completes pyrolysisJourney, is decomposed into NH3，CO2, the NH of decomposition3After mixing with air, deliver to SCR Benitration reactor. Urea pyrolysis Ammonia ProcessHave that system is simple, cost of investment is low, the advantage such as stable, fast response time, maintenance are little. But it adopts electricity to addHot mode thermal energy consumption is excessive, operating cost is high, has caused the raising of station service power consumption rate. Chinese patent literature CN100588613C public affairsOpen a kind of technique for preparing ammonia from urea by pyrolysis method, comprised urea granules storage and dissolution system, urea liquid stocking system, urea heatSolution system and waste liquid disposal system, this system is moved under normal pressure, and the response time is fast, can adopt gaseous fuel or diesel oil etc. to carry outHeating. But it adopts natural gas or diesel oil as thermal source, and operating cost is high. The ammonia preparation system from urea of Huaneng Beijing Thermal Power Plant is in realityBorder is in service, and the cost of being often only one of thermal source just reaches 1,622 ten thousand yuan. In " selective catalytic reduction denitrating flue gas " bookDisclose the application of a kind of urea pyrolysis Ammonia Process in Practical Project, in this technique, urea liquid is at metering and distributorUnder control, quantitatively spray into according to actual needs pyrolysis chamber, pyrolysis chamber utilizes heat primary air+electrical heating to combine, make to dilute wind by340 DEG C are warmed up to 570 DEG C. This technique shortcoming also clearly, the heatproof limit value of electric heater inner member, dilution wind temperature literHigh (as higher than 650 DEG C) may be limited, and electric heating equipment initial outlay and operating cost are higher.
In prior art, in pyrolysis oven, high temperature air and atomize urea, for spraying in the same way, can not reach effect mixing impact thereby causePyrolysis effect, exists backflow phenomenon at the pyrolysis oven pyrolysis section wall part that keeps to the side. Urea pyrolysis system is exerted oneself to exceed and is designed maximum bearingLotus, electrical heating supply response is not enough, causes the temperature field in furnace cannot Uniform Flow, and mass crystallization takies space, pyrolysis chamber, stops upBottom tail pipe, causes exporting air quantity and reduces, and system is inadequate for ammonia amount, affects the reliability of denitrification apparatus. Trace it to its cause, pyrolysisFurnace body design is unreasonable, to hot-air flow field, temperature field irrational distribution, the urea liquid drop after atomization can not with heatAir fully mixes, and causes the formation crystallization in various degree in power plant in practical application, even causes SCR system to stop transport when seriousOr whole compressor emergency shutdown. National Development and Reform Committee, Chinese Ministry of Environmental Protection and three ministries and commissions of Bureau of Energy combined and promulgated " energy-conservation the subtracting of coal electricity in September, 2014Row's upgrading and transformation action plan (2014～the year two thousand twenty) ", require under benchmark oxygen content 6% condition coal-burning power plant's flue dust rowPut concentration not higher than 10mg/m3, bring stern challenge to domestic coal-burning power plant cleaner, because conventional cleaner is more difficultReach this emission request. At present, domestic main employing " wet-esp technology ", " single tower integral desulfurization, dust removal degree of depthPurification techniques " and " low low temp. electric dedusting technology ". Above method all obtains good effect, but it is de-all to need to increase environmental protectionExcept equipment, as increased wet-esp, increase bundled tube demister. In implementation process, focus on to be that single equipment removes singlePollutant, all wishes to place on a link pollutant removing. Above-mentioned new equipment puts into operation and has also brought a series of new problems,As wet-esp operational reliability, wastewater treatment, seriously corroded, material are selected difficulty etc. What low cold precipitator was transformed isBefore electric cleaner, increase pipe heat exchanger (WGGH), heat absorption is used for heating the clean flue gas before chimney, pipe type heat transferDevice span is longer, exists heat insulation effect requirement strictly and improves the drawbacks such as cost. In practical engineering application, also have low temperatureEconomizer and electric cleaner applied in any combination. Current day by day serious environmental problem requires us that each power plant environmental protection is removed to equipment to carry outReconfigure design and integrated optimization and arrange, realize each system high efficiency economy, energy-conserving and environment-protective, safety and stability, accomplish cooperation-removalEnergy-saving run when pollutant. Therefore how energy-saving denitration, high-effective dust-removing, water saving desulfurization become pendulum and urgently need before usThe problem solving.
Utility model content
The utility model is for avoiding the existing weak point of above-mentioned prior art, and a kind of SCR denitrating flue gas of automatically controlling is providedUrea pyrolysis technique, realizes electrostatic precipitator import and boiler hot-zone high-temperature flue gas Btu utilization again, effectively solves urea pyrolysis systemThe difficult problem that system energy consumption is large, operating cost is high. High-efficiency atomizing nozzle and pallet are set, the reverse heat sky that sprays into of urea liquid in pyrolysis ovenIn gas, improve urea atomization pyrolysis efficiency and thoroughly solve Crystallization Plugging problem, reducing cigarette temperature and improve flue dust and SO3Remove effectRate, saves the water of desulphurization system.
The utility model is that technical solution problem adopts following technical scheme:
The design feature that the utility model is controlled SCR denitrating flue gas urea pyrolysis system is automatically: at the inlet flue duct of electric cleanerIn gas-gas heat exchanger be set form air-heating unit, in boiler, arrange that the tube bank of one group of flue gas forms air hot cell again,Air heats through described gas-gas heat exchanger, and after flue gas is restrained heat, reaches the needed heat source temperature of urea pyrolysis again and becomeHigh temperature air, it is mixed with the urea liquid mixed pyrolysis generation ammonia/air that sprays into atomization that described high temperature air is fed in urea pyrolysis stoveClose gas, described ammonia/air gas mixture sprays into the inlet flue duct of SCR Benitration reactor by AIG ammonia-spraying grid.
The design feature that the utility model is controlled SCR denitrating flue gas urea pyrolysis system automatically is also: described urea pyrolysisThe structure of stove is set to: in described urea pyrolysis stove, atomizer is arranged in top, and tray arrangement is at middle part, through configurationMass percent concentration be 50% urea liquid sprays into downwards at the top of described urea pyrolysis stove by atomizer, described inHigh temperature air is introduced and flows from bottom to top from the bottom of urea pyrolysis stove, makes described urea liquid and high-temperature gas in described holderOn dish, reverse mixing pyrolysis become ammonia.
The design feature that the utility model is controlled SCR denitrating flue gas urea pyrolysis system automatically is also: urea liquid configuration is setUnit, comprises the urea silo for splendid attire urea granules, is arranged on the upper measuring chute of urea silo discharging opening, described meteringThe discharge nozzle in storehouse is connected with the urea dissolving tank that is provided with agitator, on described urea dissolving tank, water filling port is set, ureaGrain mixes and stirs in described urea dissolving tank with water, the urea liquid that acquisition mass percent concentration is 50%.
The design feature that the utility model is controlled SCR denitrating flue gas urea pyrolysis system automatically is also: described flue gas tube bankBe set to high temperature resistant and wear-resistant material, on the elbow of the windward side of heating tube bundle, abrasion-proof cover plate be set; In entering of described heating tube bundleInlet porting adjustable ventilation door in mouthful pipe arranges bypass adjustable ventilation door in the shunt valve of described heating tube bundle, regulates the described entrance canThe aperture of air register and bypass adjustable ventilation door, makes described high-temperature gas reach design temperature.
The design feature that the utility model is controlled SCR denitrating flue gas urea pyrolysis system automatically is also: described gas-gas heat exchanger is establishedBe set to anticorrosion and high-abrasive material.
The design feature that the utility model is controlled SCR denitrating flue gas urea pyrolysis system automatically is also: at described urea dissolving tankExport pipeline in fluid reservoir is set, between described fluid reservoir and atomizer, metering module is set, utilize described metering moduleAdjust the straying quatity of urea liquid in urea pyrolysis stove.
The design feature that the utility model is controlled SCR denitrating flue gas urea pyrolysis system automatically is also: described heating tube bundle is setIntake air temperature be 85-95 DEG C.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model arranges gas-gas heat exchanger, effectively absorbs electric cleaner import flue gas heat. The tube bank of layout flue gas,Gas-gas heat exchanger is exported to hot-air post bake to the needed high temperature of urea pyrolysis, realize urea pyrolysis stove energy-saving and cost-reducing, haveEffect has reduced station service power consumption rate;
2, urea pyrolysis stove preferred arrangement atomizer and pallet in the utility model, high temperature air and urea liquid are reverse at palletThe abundant mixed pyrolysis of upper acquisition, and effectively keep fluid field in furnace even, efficiently solve urea crystals blockage problem;
3, the form that the utility model utilization heat is changed effectively reduces electric cleaner inlet flue gas temperature, makes to enter smoke gas flow in electric cleanerSpeed, flow reduce, and increase dust in the time of staying of electric field, improve and compare dust-collecting area;
4, the utility model is down to below acid dew point the inlet flue gas temperature of electric cleaner, SO3Condensation also sticks to dust surface, powderDirt reduces than resistance, has realized efficiently removing and SO of flue dust3Cooperation-removal; Due to the reduction of electric precipitation exit gas temperature,Also effectively improve desulfurizing tower to SO2Removal efficiency, reduce evaporation capacity in tower, save the water consumption of desulphurization system.
5, the utility model arranges urea silo, measuring chute and dissolving tank, increases agitator in dissolving tank, passes through control systemRealize urea liquid precisely configuration automatically;
6, the utility model system is simple, cost of investment is low, fast response time, maintenance are little, can be stable for a long time.
Brief description of the drawings
Fig. 1 is the utility model structural representation;
Number in the figure: 1 boiler, 2 heating tube bundles, 3 entrance adjustable ventilation doors, 4 bypass adjustable ventilation doors, 5 urea pyrolysis stoves, 6 mistsChange nozzle, 7 pallets, 8 booster pumps, 9 is AIG ammonia-spraying grid, 10 air inducing pumps, 11 Benitration reactors, 12 fluid reservoirs, 13Gas-gas heat exchanger, 14 urea pyrolysis tanks, 15 urea silos, 16 electric cleaners, 17 measuring chutes, 18 metering modules, 19 stirDevice.
Detailed description of the invention
Referring to Fig. 1, the version of automatically controlling SCR denitrating flue gas urea pyrolysis system in the present embodiment is:
Gas-gas heat exchanger 13 is set in the inlet flue duct of electric cleaner 16 and forms air-heating unit, in boiler 1, arrange oneGroup flue gas tube bank 2 forms air hot cell again, and air is introduced gas-gas heat exchanger 13 through air inducing pump 10, and at gas-gas heat exchangeIn device 13, heated, and reach the needed heat source temperature of urea pyrolysis after heat again through flue gas tube bank 2 and become high temperature air,High temperature air is fed in urea pyrolysis stove 5 and produces ammonia/air gas mixture, ammonia with the urea liquid mixed pyrolysis that sprays into atomization/ air gas mixture is through booster pump 8, then sprays into the inlet flue duct of SCR Benitration reactor 11 by AIG ammonia-spraying grid 9.
As shown in Figure 1, the structure of urea pyrolysis stove 5 is set to: in urea pyrolysis stove 5, atomizer 6 is arranged in top,Pallet 7 is arranged in middle part, and the urea liquid that is 50% through the mass percent concentration of configuration passes through atomizer 6 in urea heatThe top of separating stove 5 sprays into downwards, and the high temperature air that is about 650 DEG C of high temperature is introduced also from bottom to top from the bottom of urea pyrolysis stove 5Flow, make urea liquid and high-temperature gas reverse mixing pyrolysis on pallet 7 become ammonia.
Urea liquid dispensing unit is set in the present embodiment, comprises the urea silo 15 for splendid attire urea granules, be arranged on ureaThe upper measuring chute 17 of silo 15 discharging openings, the discharge nozzle of measuring chute 17 and urea dissolving tank 12 phases that are provided with agitator 19Be communicated with, on urea dissolving tank 12, water filling port be set, urea granules mixes in urea dissolving tank 14 with water and stirs, and obtainsMass percent concentration is 50% urea liquid, is delivered in fluid reservoir 12 for SCR denitration.
In the present embodiment, flue gas tube bank 2 is set to high temperature resistant and wear-resistant material, on the elbow of the windward side of heating tube bundle 2, establishesPut abrasion-proof cover plate, effectively prevent the heat erosion of high-temperature high dust to flue gas tube bank and the wearing and tearing of dirt; At the entrance of heating tube bundle 2Inlet porting adjustable ventilation door 3 in pipe arranges bypass adjustable ventilation door 4 in the shunt valve of heating tube bundle 2, regulates entrance adjustable ventilation door3 and the aperture of bypass adjustable ventilation door 4, make high-temperature gas reach design temperature, in the time that the load of boiler 1 changes, sameBe the aperture that regulates entrance adjustable ventilation door 3 and bypass adjustable ventilation door 4, to regulate air and the mixed proportion that adds again hot-air, makePyrolysis air themperature reaches design temperature, to meet the safe design requirement of ammonia air mixture.
In the present embodiment, gas-gas heat exchanger 13 is set to anticorrosion and high-abrasive material, effectively prevents the wearing and tearing of acid corrosion and dirt under low temperature;Fluid reservoir 12 is set in the export pipeline of urea dissolving tank 14, between fluid reservoir 12 and atomizer 6, metering module is set18, utilize metering module 18 to adjust the straying quatity of urea liquid in urea pyrolysis stove 5; The intake air temperature of heating tube bundle 2 is setDegree is 85-95 DEG C.
In actual motion, export NO according to SCR Benitration reactor 11xThe CEMS monitored data of concentration, passes through DCSSystem regulation metering module 18 regulates the urea liquid amount of spraying into and adjusting entrance adjustable ventilation door 3 and bypass in urea pyrolysis stove 5 automaticallyThe aperture of adjustable ventilation door 4, makes SCR system ammonia requirement and pyrolysis ability reach active balance, is reaching NOxEnvironment protection standard dischargeEconomical operation under condition.
In the present embodiment, after the import cigarette Wen Jing gas-gas heat exchanger 13 of electric cleaner 16, be down to acid dew point once, generally at 90 DEG CLeft and right. Now, most of SO3In flue gas cool-down process, condense, because flue gas not yet enters electric cleaner, so flue dust is denseSpend very highly, specific area is large, the SO of condensation3Can be adsorbed fully, the ratio resistance of dust is reduced, reduced flue gasFlow velocity, flow, thus efficiency of dust collection improved, realize flue dust, SO3Cooperation-removal.
In the present embodiment, the intake air temperature of heating tube bundle 2 is about 90 DEG C, and heating tube bundle 2 absorption boiler flue gas heat are suitableOverall heat in boiler increases, and coal-fired consumption increases approximately 0.01%, through feasibility study, at boiler 30%THA load conditionUnder meet the requirement of urea pyrolysis completely.
The utility model, by reducing electric precipitation exit gas temperature, effectively improves desulfurizing tower to SO2Removal efficiency, reduce towerInterior evaporation capacity, the water consumption of saving desulphurization system. With a 600MW unit, by 36 tons of water of saving per hour, often fall 10Degree save 8 tons of water/hour, 0.8 yuan/ton of meter of water price, can save 170,000 yuan of water rates the whole year. Table 1 is depicted as in practical applicationCertain 600MW of power plant unit is under full-load conditions, and the supporting pyrolysis oven pyrolysis urea of pure electrical heating needs heat, pyrolysis ovenEquipment investment and according to a rate for incorporation into the power network estimation year power consumption expense. Table 2 is depicted as the practical application Zhong Mou 600MW of power plant unit fullUnder loading condiction, the pyrolysis oven technological parameter that pure electrical heating is supporting.
Table 1: based on the supporting electrical heating scheme correlative charges of 600MW unit SCR denitration
| Project | Unit | Electrical heating |
| Pyrolysis oven needs heat | KJ/h | 5121603 |
| The electrical power needing | kW | 1423 |
| The dilution air quantity (mark state) needing | m3/h | 6586 |
| Year power consumption | kWh | 7113338 |
| Rate for incorporation into the power network | Unit/kWh | 0.38 |
| Year power consumption expense | Wan Yuan | 270.03 |
| Electric heater equipment price | Wan Yuan | Approximately 160 |
Show the technological parameter of the supporting pyrolysis oven of 2:600MW unit SCR denitration
| Project | Unit | Data | Remarks |
| SCR inlet flue gas amount | m3/h | 1820000 | Mark state, actual oxygen, butt |
| SCR entrance excess air coefficient | 1.143 | ||
| SCR entrance NOx concentration | mg/m3 | 400 | Mark state, butt, 6% oxygen |
| SCR system denitration efficiency | ％ | 80 | |
| Urea consumption | kg/h | 428 | |
| Urea concentration | ％ | 50 | |
| The quality of water in solution | kg/h | 350 | |
| Urea liquid temperature | ℃ | 40 | |
| Solid urea decomposition heat | kJ/mol | 89.2 | Heat absorption |
| Urea decomposition obtains NH3Amount | kmol/h | 14.26 | |
| The dilution air quantity needing | m3/h | 6586 | Mark state |
| Dilution wind-warm syndrome | ℃ | 600 | |
| Pyrolysis oven outlet temperature | ℃ | 340 | |
| System annual utilization hours | h | 4200 | |
| Standard coal price | Unit/t | 500 |
Claims (7)
1. automatically control SCR denitrating flue gas urea pyrolysis system for one kind, it is characterized in that: gas-gas heat exchanger (13) is set in the inlet flue duct of electric cleaner (16) and forms air-heating unit, in boiler (1), arrange that one group of flue gas tube bank (2) forms air hot cell again, air heats through described gas-gas heat exchanger (13), and reach the needed heat source temperature of urea pyrolysis after heat again through flue gas tube bank (2) and become high temperature air, described high temperature air is fed in urea pyrolysis stove (5) and produces ammonia/air gas mixture with the urea liquid mixed pyrolysis that sprays into atomization, described ammonia/air gas mixture sprays into the inlet flue duct of SCR Benitration reactor (11) by AIG ammonia-spraying grid (9).
2. automatic control SCR denitrating flue gas urea pyrolysis system according to claim 1, it is characterized in that: the structure of described urea pyrolysis stove (5) is set to: in described urea pyrolysis stove (5), atomizer (6) is arranged in top, pallet (7) is arranged in middle part, the urea liquid that is 50% through the mass percent concentration of configuration sprays into downwards at the top of described urea pyrolysis stove (5) by atomizer (6), described high temperature air is introduced and flows from bottom to top from the bottom of urea pyrolysis stove (5), make described urea liquid become ammonia with high-temperature gas in the upper reverse mixing of described pallet (7) pyrolysis.
3. automatic control SCR denitrating flue gas urea pyrolysis system according to claim 1, it is characterized in that: urea liquid dispensing unit is set, comprise the urea silo (15) for splendid attire urea granules, be arranged on the upper measuring chute (17) of urea silo (15) discharging opening, the discharge nozzle of described measuring chute (17) is connected with the urea dissolving tank (14) that is provided with agitator (19), on described urea dissolving tank (14), water filling port is set, urea granules mixes and stirs in described urea dissolving tank (14) with water, the urea liquid that acquisition mass percent concentration is 50%.
4. automatic control SCR denitrating flue gas urea pyrolysis system according to claim 1, it is characterized in that: described flue gas tube bank (2) is set to high temperature resistant and wear-resistant material, on the windward side elbow of heating tube bundle (2), abrasion-proof cover plate is set; Inlet porting adjustable ventilation door (3) in the inlet tube of described heating tube bundle (2), bypass adjustable ventilation door (4) is set in the shunt valve of described heating tube bundle (2), the aperture that regulates described entrance adjustable ventilation door (3) and bypass adjustable ventilation door (4), makes described high-temperature gas reach design temperature.
5. automatic control SCR denitrating flue gas urea pyrolysis system according to claim 1, is characterized in that: described gas-gas heat exchanger (13) is set to anticorrosion and high-abrasive material.
6. automatic control SCR denitrating flue gas urea pyrolysis system according to claim 3, it is characterized in that: fluid reservoir (12) is set in the export pipeline of described urea dissolving tank (14), between described fluid reservoir (12) and atomizer (6), metering module (18) is set, utilizes described metering module (18) to adjust the straying quatity of urea liquid in urea pyrolysis stove (5).
7. automatic control SCR denitrating flue gas urea pyrolysis system according to claim 1, is characterized in that: the intake air temperature that described heating tube bundle (2) is set is 85-95 DEG C.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105498532A (en) * | 2015-12-30 | 2016-04-20 | 安徽新力电业科技咨询有限责任公司 | Automatic control SCR flue gas denitrification urea pyrolysis system |
| CN106861430A (en) * | 2017-03-21 | 2017-06-20 | 西安西热锅炉环保工程有限公司 | A kind of zero-emission urea pyrolysis system and method for setting up high-temperature flue gas heat exchanger |
| CN108731011A (en) * | 2017-04-14 | 2018-11-02 | 昆山市三维换热器有限公司 | Flue gas denitrification system |
| CN111420554A (en) * | 2020-04-20 | 2020-07-17 | 国家电投集团电站运营技术（北京）有限公司 | SCR denitration device and denitration control method for coal-fired boiler |
| CN112169589A (en) * | 2020-10-30 | 2021-01-05 | 山东信能达工程科技有限公司 | Ultralow-temperature flue gas SCR denitration system and technology |
| CN112340751A (en) * | 2020-11-25 | 2021-02-09 | 山东利丰环保科技有限公司 | Urea pyrolysis system |
| CN115159544A (en) * | 2022-06-07 | 2022-10-11 | 华能太原东山燃机热电有限责任公司 | Prevent urea crystallization's pyrolysis formula denitration device |
-
2015
- 2015-12-30 CN CN201521140315.2U patent/CN205235766U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105498532A (en) * | 2015-12-30 | 2016-04-20 | 安徽新力电业科技咨询有限责任公司 | Automatic control SCR flue gas denitrification urea pyrolysis system |
| CN106861430A (en) * | 2017-03-21 | 2017-06-20 | 西安西热锅炉环保工程有限公司 | A kind of zero-emission urea pyrolysis system and method for setting up high-temperature flue gas heat exchanger |
| CN108731011A (en) * | 2017-04-14 | 2018-11-02 | 昆山市三维换热器有限公司 | Flue gas denitrification system |
| CN111420554A (en) * | 2020-04-20 | 2020-07-17 | 国家电投集团电站运营技术（北京）有限公司 | SCR denitration device and denitration control method for coal-fired boiler |
| CN112169589A (en) * | 2020-10-30 | 2021-01-05 | 山东信能达工程科技有限公司 | Ultralow-temperature flue gas SCR denitration system and technology |
| CN112340751A (en) * | 2020-11-25 | 2021-02-09 | 山东利丰环保科技有限公司 | Urea pyrolysis system |
| CN112340751B (en) * | 2020-11-25 | 2024-06-07 | 山东利丰环保科技有限公司 | Urea pyrolysis system |
| CN115159544A (en) * | 2022-06-07 | 2022-10-11 | 华能太原东山燃机热电有限责任公司 | Prevent urea crystallization's pyrolysis formula denitration device |
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Granted publication date: 20160518 Termination date: 20191230 |