CN106090895A - High effective flue gas recirculation oxygen-enriched combustion system - Google Patents
High effective flue gas recirculation oxygen-enriched combustion system Download PDFInfo
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- CN106090895A CN106090895A CN201610608070.4A CN201610608070A CN106090895A CN 106090895 A CN106090895 A CN 106090895A CN 201610608070 A CN201610608070 A CN 201610608070A CN 106090895 A CN106090895 A CN 106090895A
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- flue gas
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- oxygen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
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- 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
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/027—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using cyclone separators
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- 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
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- 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
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
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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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Supply (AREA)
Abstract
The present invention relates to coal combustion and carbon emission reduction environmental technology field, disclose a kind of high effective flue gas recirculation oxygen-enriched combustion system, including boiler, burner and coal pulverizer, the afterbody of described boiler is provided with economizer, described burner connects with the burner hearth of boiler, burner includes the First air channel connection of First air passage and secondary air channel, the outlet of described coal pulverizer and burner, the outlet of the described economizer First air channel connection by First air circulation line Yu burner；Flue gas heat-exchange unit, the first note oxygen device and the flue gas cooling device of at least some of condensate moisture in making flue gas it is provided with on described First air circulation line；The outlet of described economizer connects with the secondary air channel of burner also by secondary wind circulation line；The second note oxygen device it is provided with on described secondary wind circulation line.Native system greatly reduces the required exhaust gas volumn processed of cleaning equipment, thus reduces the scale of input of equipment, reduces initial cost cost and operating cost.
Description
Technical field
The present invention relates to coal combustion and carbon emission reduction environmental technology field, particularly relate to pulverized coal combustion system, be particularly well-suited to
Oxygen-enriched combustion boiler flue gas recycle combustion system.
Background technology
Oxygen-enriched combustion technology for carbon emission reduction is in existing station boiler system-based, uses highly purified O2And CO2Mixed
Close gas and replace conventional combustion air, obtain the CO rich in more than 80% volumetric concentration by flue gas recirculation simultaneously2Flue gas,
To realize CO after less cost condensation compression2Forever seal up for safekeeping or recycling, be relatively easy to realize large-scale CO2Rich
Collection and reduction of discharging, and owing to this new combustion mode and existing power station combustion system have good connection in technology, also
Easily accepted by power industry.This combustion system be mainly characterized by use flue gas recirculation, with the CO in flue gas2Replacement helps
Nitrogen in combustion air, participates in burning together with oxygen, so can increase substantially the CO in flue gas2Concentration, CO2Without extra point
From i.e. available and process.
But oxygen-enriched combustion technology space division system high energy consumption will directly reduce power plants generating electricity efficiency, it is considered that, use oxygen-enriched
The more conventional power station of coal fired power plant generating efficiency of combustion technology is low by more than 10%, and the increase of net coal consumption rate makes the cost of electricity-generating of power plant
Corresponding increase, compromises economy of power plant benefit, therefore, it is suppressed that power plant uses the wish of oxygen-enriched combustion technology.
How to reduce oxygen-enriched combusting coal fired power plant initial cost, reduce net coal consumption rate and power plants generating electricity cost, be directly connected to
The development prospect of oxygen-enriched combustion technology.Application publication number is: the Chinese patent of CN105509089A address only in removal flue gas
The problem of moisture, and unresolved reduction richness foster burning coal power station initial cost, reduction coal consumption and the problem of cost of electricity-generating, its actual fortune
Used time, input cost and operating cost are higher.
Summary of the invention
The technical problem to be solved is to provide a kind of high effective flue gas recirculation oxygen-enriched combustion system, to reduce richness
Oxygen combustion system initial cost and energy consumption, improve generating efficiency, prevent oxysulfide, water vapour to be mixed in circulating flue gas simultaneously, make
CO in flue gas2Concentration reduces, and affects CO2Trapping.
The technical solution adopted for the present invention to solve the technical problems is: high effective flue gas recirculation oxygen-enriched combustion system, bag
Including boiler, burner and coal pulverizer, the afterbody of described boiler is provided with economizer, and described burner connects with the burner hearth of boiler
Logical, burner includes the First air channel connection of First air passage and secondary air channel, the outlet of described coal pulverizer and burner；
Being divided into two groups immediately by economizer (4) flue gas recycled out, one group of flue gas recycled is sent into as secondary wind after note oxygen
Described secondary air channel (22), enters back into burner hearth (11), and another group flue gas recycled sends into coal-grinding after except water, note oxygen, preheating
Send into described First air passage (21) as First air after the entrance of machine (3), enter back into burner hearth (11).
The outlet of the described economizer First air channel connection by First air circulation line Yu burner；Described once
Described coal pulverizer and flue gas heat-exchange unit, the first note oxygen device and flue gas cooling device it is provided with on wind circulation line；Described
Flue gas cooling device be used for making flue gas at least some of condensate moisture.
Described flue gas heat-exchange unit includes that the first high-temperature flue gas entry, the first high-temperature flue gas outlet, the first low-temperature flue gas enter
Mouth, the first low-temperature flue gas outlet；The first described high-temperature flue gas entry and the outlet of economizer, the first described high temperature cigarette
Gas outlet connects with the entrance of flue gas cooling device, and the outlet of described flue gas cooling device connects with the first low-temperature flue gas entrance,
Described first low-temperature flue gas outlet connects with the entrance of coal pulverizer；
The outlet side of described flue gas cooling device is also by vent gas treatment pipeline and carbon dioxide compression purification devices and/or chimney
Connection；
The outlet of described economizer connects with the secondary air channel of burner also by secondary wind circulation line；Described secondary wind
The second note oxygen device it is provided with on circulation line.
Further, the port of export of described economizer is provided with smoke distributing equipment, and smoke distributing equipment is used for distributing province
The flue gas in coal device exit respectively enters First air circulation line and the ratio of secondary wind circulation line.
Further, described First air circulation line is provided with the first air-introduced machine, secondary wind circulation line is arranged
There is the second air-introduced machine.
Further, described secondary wind circulation line being additionally provided with cyclone separator, cyclone separator is positioned at second
The air inlet side of air-introduced machine.
Further, the inwall of described cyclone separator is covered with corrosive-proof plastic material, and corrosive-proof plastic material is by being welded on whirlwind
Y type pin on shell separator steel plate is fixed.
Further, the second described note oxygen device is positioned at the side, gas outlet of the second air-introduced machine, and the second note oxygen device
It is provided with Antistatic protection device.
Further, described First air circulation line being additionally provided with desulfurizer, desulfurizer is positioned at flue gas cooling
The air inlet side of device；The first described air-introduced machine includes that the first air-introduced machine a and the first air-introduced machine b, the first air-introduced machine a are positioned at
The air inlet side of desulfurizer, the first air-introduced machine b is located at the First air circulation pipe of the side, gas outlet of flue gas cooling device
Lu Shang.
Further, described First air circulation line is additionally provided with GGH and electric cleaner；Described GGH includes
Two high-temperature flue gas entries, the second high-temperature flue gas outlet, the second low-temperature flue gas entrance, the second low-temperature flue gas outlet；Described second
The gas outlet connection of high-temperature flue gas entry and the first air-introduced machine a, the second high-temperature flue gas outlet connects with the air inlet of desulfurizer,
Second low-temperature flue gas entrance connects with the gas outlet of flue gas cooling device, with the first air-introduced machine b while of the second low-temperature flue gas outlet
Air inlet and carbon dioxide compression purification devices and/or chimney connection；Described electric cleaner is positioned at the first air-introduced machine a
And between the first high-temperature flue gas outlet of flue gas heat-exchange unit.
Further, the first described note oxygen device is positioned at the first low-temperature flue gas of the first air-introduced machine b and flue gas heat-exchange unit
Between entrance.
The invention has the beneficial effects as follows: (1) is compared application publication number and is: the Chinese patent of CN105509089A, the present invention
Oxygen-enriched combustion system, due to directly extracted from economizer part high-temperature flue gas enter secondary wind circulation line circulation, so
Enter rear portion (i.e. First air circulation line in the present invention) exhaust gas volumn greatly reduce, follow-up flue gas heat-exchange unit and other
The required flue gas processed of cleaning equipment (including flue gas cooling device, desulfurizer, electric cleaner) in First air circulation line
Amount greatly reduces, thus reduces parts and the scale of input of equipment in First air circulation line largely, reduces just throwing
Money cost and operating cost；(2) oxygen-enriched combustion system of the present invention, uses the exit extracting high-temperature flue gas from economizer to enter
Secondary wind circulation line, the circulating flue gas temperature of extraction is higher, and generally 350 DEG C-450 DEG C, its combustion stability is good, the thermal efficiency
High；(3), in First air circulation line, flue gas, after desulfurizer and flue gas cooling device process, forms low temperature dry flue gas, de-
Sulfur, cooling avoid oxysulfide, water vapour appearance enrichment during oxygen-enriched combusting flue gas recirculation after processing, can prevent flue gas
In oxysulfide, water vapour be again introduced in burner hearth each pipeline of burner hearth and steam generator system is caused damage, low temperature is done simultaneously
Flue gas is prevented also from the cold end corrosion of chimney and solves the pulverized coal preparation system coal dust problem that is dried conveying；(4) circulate at First air
In pipeline, low temperature dry flue gas forms dry flue gas after flue gas heat-exchange unit heats, and dry flue gas is used as pulverized coal preparation system coal dust and is dried conveying
Fluid media (medium), the abundant burning of coal dust can be effectively ensured, and then effectively control CO in boiler exhaust gas2Concentration enrichment to 80% with
On, beneficially CO in flue gas after coal dust firing2Trapping.
Accompanying drawing explanation
Fig. 1 is the flow chart of oxygen-enriched combustion system of the present invention；
Fig. 2 is the schematic diagram that cyclone separator inwall corrosive-proof plastic material is fixing；
Fig. 3 be burner be quadrangle tangential circle arrange schematic diagram；
Fig. 4 is that burner is in the schematic diagram arranged that liquidates；
Figure is labeled as: 1-boiler, 2-burner, 3-coal pulverizer, 4-economizer, 5-flue gas heat-exchange unit, 6-flue gas cooling device,
7-the first note oxygen device, 8-vent gas treatment pipeline, 9-carbon dioxide compression purification devices, 10-chimney, 11-burner hearth, 12-second
Note oxygen device, 13-smoke distributing equipment, 14-the second air-introduced machine, 15-cyclone separator, 16-desulfurizer, 17-the first air inducing
Machine a, the 18-first air-introduced machine b, 19-GGH, 20-electric cleaner, 21-First air passage, 22-secondary air channel, 23-anti-wear plastic
Material, 24-cyclone separator hull plate, 25-Y type pin, 26-high-temperature surface, 51-the first high-temperature flue gas entry, 52-first
High-temperature flue gas exports, 53-the first low-temperature flue gas entrance, and 54-the first low-temperature flue gas exports, 191-the second high-temperature flue gas entry,
192-the second high-temperature flue gas exports, 193-the second low-temperature flue gas entrance, and 194-the second low-temperature flue gas exports.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to
This.
As it is shown in figure 1, the high effective flue gas recirculation oxygen-enriched combustion system of the present invention, including boiler 1, First air circulation line
With secondary wind circulation line.
Described boiler 1 is provided with burner 2, and burner 2 connects with the burner hearth 11 of boiler 1, and described burner 2 includes one
Secondary wind passage 21 and secondary air channel 22, burner 2 uses DC burner, quadrangle tangential circle or the layout that liquidates, such as Fig. 3 and Fig. 4
Shown in.The afterbody of described boiler 1 is provided with economizer 4.
The outlet of described economizer 4 is connected with the First air passage 21 of burner 2 by First air circulation line.Described
Being provided with the flue gas heat-exchange unit 5 and GGH 19 for Hot swapping on First air circulation line, flue gas flue gas heat-exchange unit 5 includes first
High-temperature flue gas entry the 51, first high-temperature flue gas outlet 52, first low-temperature flue gas entrance the 53, first low-temperature flue gas outlet 54, GGH
19 include second high-temperature flue gas entry the 191, second high-temperature flue gas outlet 192, second low-temperature flue gas entrance the 193, second low temperature cigarette
Gas outlet 194.The connection flow process of primary air duct is as follows, first, and the outlet of economizer 4 and the first high temperature of flue gas heat-exchange unit 5
Smoke inlet 51 connects, secondly, the first high-temperature flue gas outlet 52 successively by after electric cleaner 20 and the first air-introduced machine a 17 again
Connecting with second high-temperature flue gas entry 191 of GGH 19, the second high-temperature flue gas outlet 192 of GGH 19 successively passes through desulfurizer
16 with after flue gas cooling device 6 again the second low-temperature flue gas entrance 193 with GGH 19 connect, second low-temperature flue gas of GGH 19 goes out
Mouthfuls 194 successively by after the first air-introduced machine b 18 and the first note oxygen device 7 at the first low-temperature flue gas entrance with flue gas heat-exchange unit 5
53, the first low-temperature flue gas outlet 54 entrance with coal pulverizer 3 again of flue gas heat-exchange unit 5 connects, and finally, the outlet of coal pulverizer 3 is again
With the First air channel connection of described burner 2, coal dust enters back into economizer 4, thus is formed described after burning in burner hearth 11
First air circulation line.Wherein, desulfurizer 16, for removing the SOx in flue gas, prevents the SOx in flue gas with flue gas recirculation
And the problem of enrichment occurs, control SOx concentration in flue gas recycled and discharge flue gas and, in OK range, the cigarette at rear portion can be prevented
Road or chimney cold end corrosion；Arranging flue gas cooling device 6 after desulfurizer 16, the flue gas after desulfurizer 16 desulfurization is again
After flue gas cooling device 6 removes the most of water vapor in flue gas, can control to enter in First air circulation line for powder process
System coal dust is dried in the flue gas recycled of conveying water vapour content within 8%.
The outlet of described economizer 4 connects with the secondary air channel 22 of burner 2 also by secondary wind circulation line.Save coal
The outlet of device 4 connects with secondary air channel 22 after passing sequentially through cyclone separator the 15, second air-introduced machine 14 and the second note oxygen device 12
Logical.Wherein, described cyclone separator 15 is thermal insulation formula cyclone separator, as in figure 2 it is shown, its inwall is covered with corrosive-proof plastic material
23, corrosive-proof plastic material 23 is fixed by the Y type pin 25 being welded in cyclone separator hull plate 24；The second described air inducing
Machine 14 is high temperature resistant, wear-resisting high temperature draught fan, and thermal insulation formula cyclone separator is mainly used in the overwhelming majority in flue gas
Flying dust is separated, and reduces the second air-introduced machine 14 and the abrasion of secondary wind circulation line；The second described note oxygen device 12 sets
It is equipped with Antistatic protection device.
The ratio of First air circulation line and secondary wind circulation line is respectively enterd in order to distribute the flue gas in economizer 4 exit
Example, is provided with smoke distributing equipment 13 at the port of export near economizer 4, and smoke distributing equipment 13 controls to enter First air circulation
Exhaust gas volumn in pipeline is the 45%-55% of neat stress amount, and the exhaust gas volumn entered in secondary wind circulation line is neat stress amount
40%-50%.
It addition, for the CO trapping high concentration2And exhaust emissions, the second low-temperature flue gas outlet 194 of described GGH 19
Connect also by vent gas treatment pipeline 8 and have carbon dioxide compression purification devices 9 and chimney 10.
When the high effective flue gas recirculation oxygen-enriched combustion system of the present invention runs: by the first air-introduced machine b 18, from GGH 19
Second low-temperature flue gas outlet 194 extraction 45%-55% low temperature dry flue gas as First air circulating flue gas, this First air circulate
The oxygen of the 20%-40% needed for burning is injected by flue gas by the first note oxygen device 7, then this is followed through flue gas heat-exchange unit 5
After ring flue gas, it is dried the fluid media (medium) of conveying as pulverized coal preparation system coal dust, sends into stove through the First air passage 21 of burner 2
Thorax 11 burns.In secondary wind circulation, by the second air-introduced machine 14 from the height that economizer 4 outlet extraction cigarette temperature is 350 DEG C-450 DEG C
Temperature flue gas, after this high-temperature flue gas is arranged at cyclone separator 15 dedusting before the second air-introduced machine 14, by being arranged in second
The oxygen of the 60%-80% needed for burning is injected by the second note oxygen device 12 of air-introduced machine 14 outlet side, and by the second note oxygen
Device 12 delivers to the secondary air channel 22 of burner 2 after oxygen and circulating flue gas being sufficiently mixed.The heat smoke that burning produces depends on
Secondary by high-temperature surfaces 26 at different levels after, then through economizer 4, and be drawn into secondary wind at economizer 4 exit 40%-50%
Circulation line, remainder enters First air circulation line successively through flue gas heat-exchange unit 5, electric cleaner the 20, first air-introduced machine a
17, after GGH 19, entering desulfurizer 16 and remove the SOx in flue gas, the neat stress after desulfurization is again by flue gas cooling device 6
Removing flue gas in portion of water, make the water vapour in neat stress control within 8%, flue gas cooling device 6 dehumidifying after clean
After flue gas is heated by GGH 19,45%-55% therein is taken away by the first air-introduced machine b 18 as First air circulating flue gas,
Remainder is delivered to carbon dioxide compression purification devices 9 and is compressed purification or enter air by chimney 10.
This high effective flue gas recirculation oxygen-enriched combustion system, uses and exports the flue gas directly extracting 40%-50% from economizer 4
As secondary wind circulating flue gas, through cyclone separator 15, the flying dust in flue gas is separated, the most again by the second note oxygen device 12
Oxygen is injected, reaches required secondary wind oxygen concentration requirement of burning, be re-fed into the secondary air channel 22 of burner 2.Due to from saving coal
The flue-gas temperature that device 4 is extracted out is about 350 DEG C-450 DEG C, and note oxygen belongs to high temperature note oxygen wherein, and the second note oxygen device 12 needs to use
The safeguard procedures such as special antistatic, therefore, arrange Antistatic protection device to avoid occurring that in flue oxygen concentration is too high, draw
Play the safety problem such as detonation, blast.From the secondary wind circulating flue gas temperature substantially 350 DEG C-450 DEG C of economizer 4 outlet extraction,
Combustion stability is good.Further, since after partial fume is pumped, the exhaust gas volumn entering First air circulation greatly reduces (the most normal
The 70% of rule boiler), therefore, decrease heat loss due to exhaust gas, the required exhaust gas volumn processed of follow-up flue gas purification system is relatively
Few, reduce the scale of follow-up flue gas purification system largely, reduce initial cost cost and operating cost.
Claims (10)
1. high effective flue gas recirculation oxygen-enriched combustion system, including boiler (1), burner (2) and coal pulverizer (3), described boiler (1)
Afterbody be provided with economizer (4), described burner (2) connects with the burner hearth (11) of boiler (1), and burner (2) includes one
Secondary wind passage (21) and secondary air channel (22), the outlet of described coal pulverizer (3) connects with the First air passage (21) of burner (2)
It is logical, it is characterised in that: being divided into two groups immediately by economizer (4) flue gas recycled out, one group of flue gas recycled is after note oxygen
As secondary wind send into described secondary air channel (22), enter back into burner hearth (11), another group flue gas recycled through except water, note oxygen,
Send into described First air passage (21) as First air after sending into the entrance of coal pulverizer (3) after preheating, enter back into burner hearth (11).
High effective flue gas recirculation oxygen-enriched combustion system the most according to claim 1, it is characterised in that: described economizer (4)
Outlet connected with the First air passage (21) of burner (2) by First air circulation line；Described First air circulation line
On be provided with described coal pulverizer (3) and flue gas heat-exchange unit (5), the first note oxygen device (7) and flue gas cooling device (6)；
Described flue gas heat-exchange unit (5) includes the first high-temperature flue gas entry (51), the first high-temperature flue gas outlet (52), the first low temperature
Smoke inlet (53), the first low-temperature flue gas outlet (54)；Described the first high-temperature flue gas entry (51) and the outlet of economizer (4)
Connection, the first described high-temperature flue gas outlet (52) connects with the entrance of flue gas cooling device (6), described flue gas cooling device
(6) outlet connects with the first low-temperature flue gas entrance (53), described first low-temperature flue gas outlet (54) and the entrance of coal pulverizer (3)
Connection；
The outlet side of described flue gas cooling device (6) is also by vent gas treatment pipeline (8) and carbon dioxide compression purification devices (9)
And/or chimney (10) connection；
The outlet of described economizer (4) connects with the secondary air channel (22) of burner (2) also by secondary wind circulation line；Institute
The second note oxygen device (12) it is provided with on the secondary wind circulation line stated.
High effective flue gas recirculation oxygen-enriched combustion system the most according to claim 2, it is characterised in that: described economizer (4)
The port of export be provided with smoke distributing equipment (13), smoke distributing equipment (13) is used for distributing the flue gas in economizer (4) exit
Respectively enter First air circulation line and the ratio of secondary wind circulation line.
High effective flue gas recirculation oxygen-enriched combustion system the most according to claim 3, it is characterised in that: described First air follows
It is provided with the first air-introduced machine on endless tube road, secondary wind circulation line is provided with the second air-introduced machine (14).
High effective flue gas recirculation oxygen-enriched combustion system the most according to claim 4, it is characterised in that: described secondary wind is followed
Being additionally provided with cyclone separator (15) on endless tube road, cyclone separator (15) is positioned at the air inlet side of the second air-introduced machine (14).
High effective flue gas recirculation oxygen-enriched combustion system the most according to claim 5, it is characterised in that: described cyclone separator
(15) inwall is covered with corrosive-proof plastic material (23), and corrosive-proof plastic material (23) is by being welded in cyclone separator hull plate (24)
Y type pin (25) fix.
High effective flue gas recirculation oxygen-enriched combustion system the most according to claim 5, it is characterised in that: the second described note oxygen
Device (12) is positioned at the side, gas outlet of the second air-introduced machine (14), and the second note oxygen device (12) is provided with antistatic protection dress
Put.
High effective flue gas recirculation oxygen-enriched combustion system the most according to claim 7, it is characterised in that: described First air follows
Being additionally provided with desulfurizer (16) on endless tube road, desulfurizer (16) is positioned at the air inlet side of flue gas cooling device (6)；Described
The first air-introduced machine include the first air-introduced machine a(17) and the first air-introduced machine b(18), the first air-introduced machine a(17) be positioned at desulfurizer
(16) air inlet side, the first air-introduced machine b(18) it is located at the First air circulation of the side, gas outlet of flue gas cooling device (6)
On pipeline.
High effective flue gas recirculation oxygen-enriched combustion system the most according to claim 8, it is characterised in that: described First air follows
GGH (19) and electric cleaner (20) it is additionally provided with on endless tube road；Described GGH(19) include the second high-temperature flue gas entry (191),
Second high-temperature flue gas outlet (192), the second low-temperature flue gas entrance (193), the second low-temperature flue gas outlet (194)；Described second
High-temperature flue gas entry (191) and the first air-introduced machine a(17) gas outlet connect, the second high-temperature flue gas outlet (192) and desulfurization fills
Putting the air inlet connection of (16), the second low-temperature flue gas entrance (193) connects with the gas outlet of flue gas cooling device (6), and second is low
Temperature exhanst gas outlet (194) simultaneously with the first air-introduced machine b(18) air inlet and carbon dioxide compression purification devices (9) and/or
Chimney (10) connects；Described electric cleaner (20) is positioned at the first air-introduced machine a(17) and the first high temperature cigarette of flue gas heat-exchange unit (5)
Between gas outlet (52).
High effective flue gas recirculation oxygen-enriched combustion system the most according to claim 8, it is characterised in that: the first described note
Oxygen device (7) is positioned between the first air-introduced machine b (18) and the first low-temperature flue gas entrance (53) of flue gas heat-exchange unit (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610608070.4A CN106090895A (en) | 2016-07-29 | 2016-07-29 | High effective flue gas recirculation oxygen-enriched combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610608070.4A CN106090895A (en) | 2016-07-29 | 2016-07-29 | High effective flue gas recirculation oxygen-enriched combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106090895A true CN106090895A (en) | 2016-11-09 |
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| CN201610608070.4A Pending CN106090895A (en) | 2016-07-29 | 2016-07-29 | High effective flue gas recirculation oxygen-enriched combustion system |
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| CN107917417A (en) * | 2017-12-12 | 2018-04-17 | 上海交通大学 | A kind of boiler smoke recirculation blower anti-corrosion system |
| CN109107211A (en) * | 2018-08-30 | 2019-01-01 | 东南大学 | The device and method that air and flue gas compressor and waste heat recycle in a kind of oxygen-enriched combustion system |
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| CN109107211A (en) * | 2018-08-30 | 2019-01-01 | 东南大学 | The device and method that air and flue gas compressor and waste heat recycle in a kind of oxygen-enriched combustion system |
| CN109107211B (en) * | 2018-08-30 | 2021-03-23 | 东南大学 | Device and method for compressing air and flue gas and recovering waste heat in oxygen-enriched combustion system |
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