CN105402753B - A kind of net cigarette system for removing chimney of electric plant white plume - Google Patents

A kind of net cigarette system for removing chimney of electric plant white plume Download PDF

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Publication number
CN105402753B
CN105402753B CN201510972523.7A CN201510972523A CN105402753B CN 105402753 B CN105402753 B CN 105402753B CN 201510972523 A CN201510972523 A CN 201510972523A CN 105402753 B CN105402753 B CN 105402753B
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CN
China
Prior art keywords
chimney
connects
wet
heater
neat stress
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CN201510972523.7A
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Chinese (zh)
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CN105402753A (en
Inventor
孙志翱
俞元元
尤毓敏
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无锡华光新动力环保科技股份有限公司
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Priority to CN201510972523.7A priority Critical patent/CN105402753B/en
Publication of CN105402753A publication Critical patent/CN105402753A/en
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Publication of CN105402753B publication Critical patent/CN105402753B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/08Arrangements of devices for treating smoke or fumes of heaters

Abstract

The invention provides a kind of net cigarette system for removing chimney of electric plant white plume, it can effectively remove chimney white plume, meet the requirement of environment protection emission diffusion, avoid the corrosion of chimney, the bad impression of people's vision is eliminated simultaneously, so as to eliminate the misgivings of people's fume emission, it includes air preheater, deduster connects the air preheater, air-introduced machine connects the air preheater, and wet desulphurization device connects the air-introduced machine, and Wet-electric duster connects the wet desulphurization device, the Wet-electric duster connects chimney, it is characterised in that:Neat stress heater is provided between the Wet-electric duster and the chimney.

Description

A kind of net cigarette system for removing chimney of electric plant white plume

Technical field

The present invention relates to the technical field of smoke processing system, specially a kind of net cigarette for removing chimney of electric plant white plume System.

Background technology

With increasingly strict, in the July, 2011 of environmental requirement, Environmental Protection Department, State Administration for Quality Supervision and Inspection and Quarantine Issue《Fossil-fuel power plant atmospheric pollutant emission standard》(GB13223-2011), it is desirable to key area fired power generating unit discharge standard For:NOx emission is less than 100mg/Nm3, SO2Discharge is less than 50mg/Nm3, soot emissions are less than 20mg/Nm3.In September, 2014, state Three ministries and commissions of family print and distribute《The energy-saving and emission-reduction of coal electricity upgrade and transformation action plan (2014-2020)》, action plan requirement, east The newly-built Thermal generation unit Air Pollutant Emission concentration in area basically reaches discharge of gas turbine limit value, i.e.,:NOx emission is less than 50mg/Nm3, SO2Discharge is less than 35mg/Nm3, soot emissions are less than 5mg/Nm3

For increasingly strict environmental requirement, to reach minimum discharge purpose, power plant typically takes following process route:It is low Nitrogen burning+SCR denitration+deduster+wet desulphurization device(FGD)+ wet electric dust-removing(WESP), this is the master that current power plant takes Flow Technique route.Because GGH is easily leaked, typically GGH is all eliminated in desulfurizer.In actual motion, flue gas passes through boiler After wet desulphurization+wet electric dust-removing, cigarette temperature at 50 DEG C or so, at throat flue gas because water recovery quickly forms white cigarette Plumage.

The presence of white plume at throat, can bring some problems:On the one hand, although flue gas has been subjected to desulfurization process, But there is part SO after all2And SO3In the presence of chimney inlet flue gas temperature only has 50 DEG C or so, and less than acid dew-point temperature, chimney can be made Into corrosion;On the other hand, it is impossible to meet the requirement of environment protection emission diffusion, i.e. scape can be destroyed by white plume occur at throat See, influence visual experience, bring many misgivings to the masses for living in periphery, adversely affect.With the day of environmental requirement Become strict, in July, 2011, Environmental Protection Department, State Administration for Quality Supervision and Inspection and Quarantine issue《Thermal power plant atmosphere pollution row Put standard》(GB13223-2011), it is desirable to key area fired power generating unit discharge standard is:NOx emission is less than 100mg/Nm3, SO2 Discharge is less than 50mg/Nm3, soot emissions are less than 20mg/Nm3.In September, 2014, national three ministries and commissions print and distribute《Coal electricity energy-saving and emission-reduction liter Level and transformation action plan (2014-2020)》, action plan requirement, the newly-built Thermal generation unit atmosphere pollution in eastern region Thing concentration of emission basically reaches discharge of gas turbine limit value, i.e.,:NOx emission is less than 50mg/Nm3, SO2Discharge is less than 35mg/Nm3, Soot emissions are less than 5mg/Nm3

For increasingly strict environmental requirement, to reach minimum discharge purpose, power plant typically takes following process route:It is low Nitrogen burning+SCR denitration+deduster+wet desulphurization device(FGD)+ wet electric dust-removing(WESP), this is the master that current power plant takes Flow Technique route.Because GGH is easily leaked, typically GGH is all eliminated in desulfurizer.In actual motion, flue gas passes through boiler After wet desulphurization+wet electric dust-removing, cigarette temperature at 50 DEG C or so, at throat flue gas because water recovery quickly forms white cigarette Plumage.

The presence of white plume at throat, can bring some problems:On the one hand, although flue gas has been subjected to desulfurization process, But there is part SO after all2And SO3In the presence of chimney inlet flue gas temperature only has 50 DEG C or so, and less than acid dew-point temperature, chimney can be made Into corrosion;On the other hand, it is impossible to meet the requirement of environment protection emission diffusion, i.e. scape can be destroyed by white plume occur at throat See, influence visual experience, bring many misgivings to the masses for living in periphery, adversely affect.

The content of the invention

In view of the above-mentioned problems, the invention provides a kind of net cigarette system for removing chimney of electric plant white plume, it can have Effect ground removes chimney white plume, meets the requirement of environment protection emission diffusion, avoids the corrosion of chimney, while eliminate people and regard The bad impression felt, so as to eliminate the misgivings of people's fume emission.

The technical solution adopted by the present invention is such, and a kind of net cigarette system for removing chimney of electric plant white plume, it is wrapped Air preheater is included, deduster connects the air preheater, and air-introduced machine connects the air preheater, and wet desulphurization device connects The air-introduced machine is connect, Wet-electric duster connects the wet desulphurization device, and the Wet-electric duster connects chimney, its feature It is:, neat stress heater is provided between the Wet-electric duster and the chimney.

It is further characterized by:Booster fan is provided between the chimney and the neat stress heater;

Neat stress heater includes neat stress heater, boiler connection steam turbine, steam turbine connection cryophorus, cryophorus Low-pressure heater, low-pressure heater connection oxygen-eliminating device are connected by condensate pump, oxygen-eliminating device connects hyperbaric heating by feed pump Device, high-pressure heater connection boiler, forms thermal cycle, neat stress heater connects oxygen-eliminating device and low-pressure heater respectively;It is described Oxygen-eliminating device connection supply water installations;

The neat stress heater includes gas approach, exhanst gas outlet and heat exchanger tube, and the gas approach connection is described wet Method electric cleaner, the exhanst gas outlet connect the chimney, and the heat exchanger tube import connects the oxygen-eliminating device, and the heat exchanger tube goes out Mouth connects the low-pressure heater;

The heat exchanger tube is that light pipe or fin type are restrained;The fin type tube bank is spiral finned tube or H type extended surface tubes.

In the said system of the present invention, due to being provided with neat stress heater between Wet-electric duster and chimney, pass through Flue gas after desulfurization process passes through neat stress heating devices heat, effectively removes chimney white plume, meets that environment protection emission spreads Requirement, the corrosion of chimney is avoided, while eliminate the bad impression of people's vision, so as to eliminate people's fume emission Misgivings.

Brief description of the drawings

Fig. 1 is the net cigarette system schematic that the present invention removes chimney of electric plant white plume;

Fig. 2 is neat stress heater schematic diagram.

Embodiment

See Fig. 1, Fig. 2, a kind of net cigarette system for removing chimney of electric plant white plume, it includes air preheater, deduster Air preheater is connected, air-introduced machine connection air preheater, wet desulphurization device connection air-introduced machine, Wet-electric duster connects wet Method desulfurizer, Wet-electric duster connection chimney, is provided with neat stress heater, chimney between Wet-electric duster and chimney Booster fan is provided between neat stress heater, flue gas process flow is that the flue gas that boiler comes out passes through air preheater Afterwards, first pass around dry electrostatic cleaner or sack cleaner carries out dedusting, the flue gas after dedusting takes off to air-introduced machine, then to wet method Sulphur system, wet desulfurizing process have desulfurization method of limestone-gypsum, the ammonia process of desulfurization and magnesia FGD etc., the cigarette after desulfurization Gas is less than 5 mg/Nm to reach the dust concentration of minimum discharge requirement3, then to Wet-electric duster, now flue-gas temperature drops To 50 DEG C or so, in order to remove throat white plume, after new neat stress heater, flue-gas temperature is heated to flue gas 90 DEG C or so, then to smoke stack emission.

Cigarette temperature after the neat stress heater, 90 DEG C or so are increased to from 50 DEG C or so, mainly had following excellent Point:

1st, it can effectively mitigate chimney corrosion, anti-corrosion investment can be saved, and reduce maintenance load and reduce maintenance cost;

2nd, the requirement of environment protection emission diffusion can be met, showing for white plume will not occur due to water recovery in throat As after flue gas height opens chimney, water vapour can condense a long way off, but now the surrounding air of surrounding can be dilute to flue gas progress Release, be not in obvious white plume phenomenon;

3rd, the preferred arrangement of system can be realized.For environmental transformation project, resistance drop can not be overcome by being contributed such as air-introduced machine It is required that desulphurization devices need to be set up, booster fan is typically all disposed within before desulfurizing tower at present, in order to consider the work of blower fan Environment, mitigate corrosion and contamination problems of the wet flue gas to blower fan.After the neat stress heater, due to the liter of cigarette temperature Height, booster fan can be placed on after desulfurizing tower and neat stress heater, blower fan will not be subjected to the shadow of high temperature operating conditions Ring, due to the reduction of cigarette temperature, flue gas flow has also been reduced, and energy consumption is reduced.On the other hand, heated using the neat stress After device, desulfuration absorbing tower is operated under negative pressure state, can reduce sealing structure requirement, and system, which is arranged, to be optimized.

See Fig. 2, neat stress heater includes neat stress heater, boiler connection steam turbine, and steam turbine connects generator, Steam turbine connects cryophorus, and cryophorus connects low-pressure heater, low-pressure heater connection oxygen-eliminating device, oxygen-eliminating device by condensate pump High-pressure heater is connected by feed pump, high-pressure heater connection boiler, forms thermal cycle, oxygen-eliminating device connection feeds water installations, Neat stress heater includes gas approach, exhanst gas outlet and heat exchanger tube, gas approach connection Wet-electric duster, and exhanst gas outlet connects Cigarette receiving chimney, heat exchanger tube import connection oxygen-eliminating device, heat transfer tube outlet connection low-pressure heater.

The neat stress heater of new removal chimney of electric plant white plume include boiler low-pressure heater outlet pipeline 1, Neat stress heater 2, neat stress heater water outlet to oxygen-eliminating device pipeline 3, Wet-electric duster exhaust pass 4, neat stress heating Device exports to the flue 5 of chimney.

The flue gas that Wet-electric duster exports 50 DEG C or so flows into neat stress heating by Wet-electric duster exhaust pass 4 Device 2, flue gas is to 90 DEG C or so in neat stress heater 2, and afterwards, flue gas passes through neat stress heater outlet to chimney Flue 5 is discharged into chimney.

The thermal source technological process of neat stress heater:Power plant's raw water vapour system flow is generally boiler feedwater and passes through boiler Superheated steam is heated into, superheated steam flows into condenser after steam turbine power generation, is arrived after being condensed into water by condensate pump is defeated Low-pressure heater, by the water of low-pressure heater after oxygen-eliminating device deoxygenation, by feed pump and high-pressure heater, as boiler Feedwater enters boiler.Hot water all the way is drawn from low-pressure heater outlet conduit 1 now, hot water is 50 in neat stress heater 2 DEG C or so flue gas to after 90 DEG C or so, hot water temperature drop is at 70 DEG C or so, then passes through neat stress heater water outlet to oxygen-eliminating device Pipeline 3 returns to oxygen-eliminating device and carries out deoxygenation.

Heat exchanger tube is that light pipe or fin type are restrained, and fin type tube bank can be divided into spiral finned tube or H type extended surface tubes, fin again Formula tube bank can effectively improve heat exchange efficiency.

Claims (3)

1. a kind of net cigarette system for removing chimney of electric plant white plume, it includes air preheater, and deduster connects the air Preheater, air-introduced machine connect the air preheater, and wet desulphurization device connects the air-introduced machine, Wet-electric duster connection institute Wet desulphurization device is stated, the Wet-electric duster connects chimney, it is characterised in that:The Wet-electric duster and the chimney Between be provided with neat stress heater;Booster fan is provided between the chimney and the neat stress heater;Neat stress adds Thermal includes neat stress heater, and the booster fan is arranged at after desulfurizing tower and neat stress heater;Boiler connects vapour Turbine, the steam turbine connect cryophorus, and the cryophorus connects low-pressure heater, the low-pressure heater by condensate pump Oxygen-eliminating device is connected, the oxygen-eliminating device connects high-pressure heater by feed pump, and the high-pressure heater connects the boiler, is formed Thermal cycle, the neat stress heater connect the oxygen-eliminating device and low-pressure heater respectively;The oxygen-eliminating device connection make-up water dress Put;The neat stress heater includes gas approach, exhanst gas outlet and heat exchanger tube, and the gas approach connects the electricity of wet process and removed Dirt device, the exhanst gas outlet connect the chimney, and the heat exchanger tube import connects the oxygen-eliminating device, the heat transfer tube outlet connection The low-pressure heater.
A kind of 2. net cigarette system for removing chimney of electric plant white plume according to claim 1, it is characterised in that:It is described to change Heat pipe is that light pipe or fin type are restrained.
A kind of 3. net cigarette system for removing chimney of electric plant white plume according to claim 2, it is characterised in that:The fin Chip tube bank is spiral finned tube or H type extended surface tubes.
CN201510972523.7A 2015-12-23 2015-12-23 A kind of net cigarette system for removing chimney of electric plant white plume CN105402753B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510972523.7A CN105402753B (en) 2015-12-23 2015-12-23 A kind of net cigarette system for removing chimney of electric plant white plume

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CN201510972523.7A CN105402753B (en) 2015-12-23 2015-12-23 A kind of net cigarette system for removing chimney of electric plant white plume

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CN105402753B true CN105402753B (en) 2018-02-23

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Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11179146A (en) * 1997-12-18 1999-07-06 Chiyoda Corp Waste gas treatment system
CN101556051B (en) * 2008-04-09 2011-03-16 华北电力科学研究院有限责任公司 Thermal power unit for desulfurization by wet method
CN101825275A (en) * 2009-03-03 2010-09-08 史振玺 Device for recycling waste heat of flue gas in power station boiler
CN102012036B (en) * 2010-11-02 2012-09-05 杨本洛 Composite phase-transition heat exchanging device for warming clean gas fume and recovering exhaust heat after wet desulphurization
CN103836607B (en) * 2014-03-05 2015-12-09 华电电力科学研究院 Thermal power plant's SCR denitration reactor working temperature controller and control method thereof
CN104100964A (en) * 2014-07-16 2014-10-15 西安西热锅炉环保工程有限公司 Synergistic removal system and method for realizing ultra-low emission of multiple pollutants of smoke of thermal power plant
CN104179537B (en) * 2014-08-18 2017-01-25 北京电力设备总厂有限公司 Brown coal drying power generating system capable of recycling water in coal and implementation method of brown coal drying power generating system
CN204084325U (en) * 2014-08-21 2015-01-07 成信绿集成股份有限公司 A kind of reduction of discharging energy conserving system cancelling GGH
CN104848238B (en) * 2015-04-22 2017-05-10 东南大学 Electric dust removal heat exchange system
CN205351367U (en) * 2015-12-23 2016-06-29 无锡华光新动力环保科技股份有限公司 Get rid of clean cigarette system of power plant's chimney white plume

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