CN102287813A - Boiler device adopting cyclone-burning method - Google Patents
Boiler device adopting cyclone-burning method Download PDFInfo
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Abstract
The invention discloses a boiler device adopting a cyclone-burning method, which comprises a cyclone barrel, a main boiler hearth and a liquid-slag granulating water tank, wherein a primary-air inlet is arranged at the front end of the cyclone barrel, a secondary-air inlet is arranged in the middle of the cyclone barrel, and the tail of the cyclone barrel is seamlessly connected with the main boiler hearth through a concave outlet; and a gradually-shrunk part at the lower part of the main boiler hearth is provided with a cold-ash hopper, and the granulating water tank for granulating the liquid discharged slag of a boiler is arranged at the lower part of the cold-ash hopper. The boiler device disclosed by the invention has the following advantages that: burning fuel only needs to be simply crushed, so that the powder-manufacturing electricity consumption is greatly saved, and the cost is saved; the boiler device is stable in burning; the heat intensity is high, and the volume of the boiler is small; the burning efficiency is high, and the economical property is good; slag is discharged in a liquid state; the ash-slag capturing rate is high, and the content of flying ash is greatly reduced; the size of the boiler is compact; many kinds of fuel can be burnt, and the adaptability of the fuel is wide; the load-regulating capability of the boiler is large; the ash slag is convenient to comprehensively utilize; and the occurrence of the phenomenon of high-temperature corrosion is greatly lightened.
Description
Technical field
The present invention relates to a kind of boiler plant that adopts the cyclone firing method, belong to the boiler plant field.
Background technology
In recent years, China's rapid economic development, electricity needs and supply sustainable growth in predictable future, are difficult to change the critical role of coal.Therefore, aspect power supply architecture, the basic configuration of coal-fired unit will be continued to keep in considerable time from now on.
In the long term, following more than 100 year, the development of the particularly new and effective coal-burning boiler technology of coal-burning boiler technology was still the focus of China's power industry common concern.In the process of the new and effective coal-burning boiler technology of research and development, the actual features of the coal resources in China of must combining closely is proceeded from the reality.And the maximum characteristics of coal resources in China are exactly:
(1) low-ash-fusion coal content height;
In the coal resources total amount of China, there is a large portion to belong to low-ash-fusion coal, China's low-ash-fusion coal accounts for more than 1/3 of coal total amount.From existing big unit operation situation, can think roughly that all atures of coal have half belonging to easy slagging scorification type in varying degrees approximately; In the long term, all rich very low coal of ash fusibility of hiding in the most major impetus of China coal-producing area.
(2) in the steam coal, anthracite, meager coal occupy significant proportion.
China's anthracite reserves are abundant, and widely distributed, in the steam coal, anthracite accounted for for 19.99% (and most of anthracite belongs to low-ash-fusion coal), and meager coal accounts for 9.19%, amount to 29.18%.
For using low-ash-fusion coal,, will certainly produce serious boiler hearth heating surface slagging scorification and etching problem if adopt coal-powder boiler (as tangential firing, wall firing mode etc.).Furnace heating surface slagging scorification and high temperature corrosion problem are perplexing power industry all the time, have a strong impact on boiler output, reduce boiler efficiency, and can cause damage boiler plant, influence safe operation when serious, cause great economic loss (as northern logical sequence port incident in 1993) simultaneously.
Though the sharpest edges of recirculating fluidized bed (CFB) boiler are the efficient utilization and the low SO of colm (as gangue etc.)
2, low NO
xThe characteristics of discharging, but on the other hand, shortcomings such as the boiler component wearing and tearing that the generating efficiency that the CFB boiler had is low, station service power consumption rate is high and serious are all perplexing power industry all the time, it simultaneously also is the bottleneck of its large scale development of restriction, and coming into force along with present stage thermal power plant's Air Pollutant Emission new standard, although China's CFB technology is in the international advanced and part technology leading level in the world, but still do not satisfy the requirement of emission limit in the new standard.If must satisfy emission limit, then must install FGD (flue gas desulfurization) and SCR (selective catalytic reduction flue gas denitration) device additional, not only run counter to the original intention of CFB technological development, limited the scope of application and the application prospect of CFB greatly, also cause the waste of resource and fund simultaneously.
Using anthracite, meager coal field, present stage is mainly to adopt the W flame boiler.By the end of at present, China W flame boiler has been gone into operation surplus in the of 90, building tens, but from existing ruuning situation, still ubiquity following problem:
(1) unburned carbon in flue dust height;
The unburned carbon in flue dust of most of W flame boilers all about 10%-20%, have in addition up to 20%-30%, only have minority to be lower than 10%, therefore seriously reduced boiler efficiency, caused great waste of fuel.
(2) the lower hearth slagging scorification is serious;
The W flame boiler increases combustible loss because the lower furnace portion section is about the twice of horizontal firing mode for preventing that flame temperature from reducing, and must lay wall with refractory lining, refracto, and area generally reaches 500-730m
2, this is the intrinsic particularity of W flame boiler.But then because the wall with refractory lining, refracto surface ratio is more coarse, as easy as rolling off a log slagging scorification, dross, when particularly using the lower coal of ash fusion point, as easy as rolling off a log slagging scorification, even can serious coking, influence the safe operation of boiler.
(3) pollutant NO
xDischarging is high.
China is at present at the W flame boiler that moves, its pollutant NO
xDischarge capacity is substantially all at 1300mg/Nm
3More than (converting oxygen amount 6%), have then up to 2000mg/Nm
3More than, severe contamination the atmospheric environment of China.
Summary of the invention
Main purpose of the present invention is to solve: serious burner hearth slagging scorification and high temperature corrosion problem that (1) coal-powder boiler produces when using low-ash-fusion coal; (2) boiler component that generating efficiency is low, station service power consumption rate is high, the serious wearing and tearing that had of CFB boiler and will satisfy emission limit in the new discharge standard that is about to come into force, then must install FGD and SCR device additional, thereby run counter to the shortcomings such as original intention of CFB technological development; (3) the W flame boiler use anthracite, the existing boiler efficiency in meager coal field is low, unburned carbon in flue dust is high, the serious slagging scorification of lower hearth and pollutant NO
xDischarge high shortcoming; A kind of boiler plant that adopts the cyclone firing method has been proposed for this reason, it has the incomparable at all advantage of other boiler shapes in the low-ash-fusion coal field, wide as fuel tolerance, simplify even cancellation boiler milling system, superior Load Regulation ability and lime-ash are convenient to comprehensive utilization etc.
In actual applications, by adding a small amount of flux (as CaO/CaCO
3, Fe
2O
3, Al
2O
3, MgO, borax etc.), just can realize that the present invention uses the situation of high ash melting point fuel.
A kind of boiler plant that adopts the cyclone firing method proposed by the invention mainly comprises whirlwind tube 1, boiler main furnace chamber 7 and liquid slag granulation water tank 6.Wherein whirlwind tube 1 is a cylinder-like structure, its internal structure characteristics are that close pin and the wear-resisting anticorrosive liner of one deck put of one deck laid on the water-cooling wall surface, front end at whirlwind tube 1 is furnished with wind inlet 2 one time, intermediate arrangement has secondary wind inlet 3, and its afterbody is by spill outlet 4 and 7 seamless links of boiler main furnace chamber; The bottom gradually-reducing shape of boiler main furnace chamber 7 partly is a furnace hopper 5, and the lower disposed of furnace hopper 5 has and is used for the granulation water tank 6 of granulation boiler slag tap.
A kind of boiler plant that adopts the cyclone firing method proposed by the invention, when using, send into the fuel gas stream of whirlwind tube by wind inlet, mix back acutely burning under the situation of excess air coefficient α＞1 (α=1.01～1.2) strongly with the secondary wind that the secondary wind inlet is sent into, owing to have very high ignition temperature (common more than 1650 ℃) and extremely strong disturbance ability in the whirlwind tube, the slag that can make burning form melts and sticks to and forms the liquid slag film on the barrel, and the liquid slag expelling tube forms slag tap outward.Fuel particle is when the whirlwind cylinder roasting, bigger particle since action of centrifugal force can stick on the whirlwind tube inwall on formed one deck slag film, form so-called " adhesion combustion ", fugitive constituent and thinner fuel then carry out suspension combustion in the whirlwind tube.Because burning is mainly finished in the whirlwind tube, so the main furnace chamber of boiler is compared with coal-powder boiler and can be reduced relatively.
As to further improvement of the present invention, consider in actual applications and reduce pollutant NO in the flue gas
xThe needs of discharging, the present invention can be designed to adopt the form of air classification combustion technology as required, that is: (1) is sent into the fuel gas stream of whirlwind tube by wind inlet, mixing the back strongly with secondary wind that the secondary wind inlet is sent into burns under the condition of excess air coefficient α＜1, form so-called fuel-rich combustion district, and generation contains finite concentration NO
xFlue gas; (2) reach the required surplus air of completing combustion and send into burner hearth by after-flame wind (OFA) spout that is arranged in certain position place, main furnace chamber top, the condition in excess air coefficient α＞1 is issued to completing combustion.Wherein, the excess air coefficient α in the fuel-rich combustion district in the described whirlwind tube of step (1) is 0.6～0.95, consider that simultaneously the cyclone firing boiler is when adopting conventional air classification combustion technology, reduction along with excess air coefficient in the whirlwind tube, make the temperature levels in the whirlwind tube also and then have reduction largely, this just might constitute a threat to keeping normal slag tap, therefore, according to actual coal-fired characteristics, the secondary wind inlet can adopt the air of sending into " oxygen enrichment " (be oxygen concentration greater than 21% air) as required, can make the interior primary zone of whirlwind tube oxygen concentration obtain bigger raising like this, because oxygen has very big combustion-supporting effect, make the ignition temperature in the whirlwind tube improve greatly, compare and to decrease with the normal combustion situation thereby can overcome the whirlwind cylinder roasting temperature that the cyclone firing boiler caused well when adopting conventional air classification combustion technology, and then may constitute certain this hidden danger that threatens normal slag tap in the whirlwind tube; Excess air coefficient α in the step (2) is 1.05～1.2, and send into after-flame wind (OFA) spout of the required surplus air of completing combustion can be according to concrete needs arranging multiplayer, and the air output of each interlayer can equate or do not wait.
A kind of boiler plant that adopts the cyclone firing method proposed by the invention is considered in actual applications and is reduced pollutant NO in the flue gas
xThe needs of discharging, can also further be modified into adopt conventional fuel again the form of combustion technology (or be modified into the form that realizes the fuel denitration by refueling in the whirlwind tube, specifically can apply for patent of invention " realizing the cyclone firing method and the device thereof of fuel denitration by refueling in a kind of whirlwind tube " with reference to our unit, application number: 201110001871.1), that is: (1) wind fuel gas stream carrying main fuel enters the whirlwind tube by a wind inlet, by mixing after-combustion strongly with secondary wind that the secondary wind inlet is sent into, in the whirlwind tube, form so-called primary zone, and generation contains finite concentration NO
xFlue gas; (2) send into the reburning fuel air-flow by the reburning fuel spout that is arranged in boiler main furnace chamber certain position place, form so-called reburning zone in this zone, the strong reducing property atmosphere in this district not only makes the NO that the primary zone has generated
xObtain reduction, but also suppressed new NO
xGenerate, can make NO
xConcentration of emission further reduce; (3) spray into from the after-flame wind snout that is arranged in boiler main furnace chamber top certain position and reach the required surplus air of completing combustion, form burning-out zone.Wherein the main fuel sent into of the described primary zone of step (1) accounts for 70%～85% of the total fuel of boiler, and excess air coefficient α is 0.9～1.1; The reburning fuel that the described reburning zone of step (2) is sent into accounts for 15%～30% of the total fuel of boiler, and excess air coefficient α is 0.7～0.95; The described burning-out zone excess air coefficient of step (3) α is 1.05～1.2.
A kind of boiler plant that adopts the cyclone firing method proposed by the invention is very different with at present domestic vertical cyclone furnace tool in operation, is the improvement to existing vertical cyclone furnace technology, belongs to a kind of cyclone firing boiler technology of a brand-new generation.The vertical cyclone furnace technology is owing to the structural disadvantages of itself, and being doomed it can't be to large scale development, and boiler efficiency is lower simultaneously.For vertical cyclone furnace, along with the increase of boiler capacity, the number of required whirlwind tube is also increasing; And on the other hand, owing to adopt vertical whirlwind tube, make it on the upright position, occupy very large space, generally only can arrange one deck whirlwind tube, can't realize the multilayer layout of whirlwind tube at all, this capacity of just being doomed vertical cyclone furnace can't be done very greatly, at present its capacity mainly based on 260,150,130,75t/h.And a kind of boiler plant that adopts the cyclone firing method proposed by the invention, because what adopted is a kind of whirlwind tube of transversary, and the slag tap of all whirlwind tubes all is to be concentrated by the furnace hopper of boiler main furnace chamber bottom to discharge, therefore in application, can realize the multilayer layout (comprising single-sided arrangement, bilateral symmetric arrangement and the asymmetric layout of bilateral etc.) of whirlwind tube easily, thereby make its boiler capacity can do very greatly.
A kind of boiler plant that adopts the cyclone firing method proposed by the invention is with the patent of invention of having applied for " station boiler anthracite powder combustion plant " (application number: 200810029721.X) compare the difference with essence.Patent of invention (application number: 200810029721.X) described a kind of station boiler anthracite powder combustion plant; by adopting whirlwind tube burner and DC burner structure combining (its load proportion is 70%:30%); reach and guarantee that anchracite duff can catch fire fast and abundant after-flame; thereby effectively improve the main purpose of boiler efficiency; its range of application only limits to use the anthracite field; and the whirlwind tube burner that it adopted also is a kind of vertical structure; and the liquid slag that is adopted ash slag bucket is to be arranged in each whirlwind tube beneath (and the present invention's liquid slag is to be concentrated by the furnace hopper of boiler main furnace chamber bottom to enter the granulation water tank); this just has been doomed its whirlwind tube and can't adopts multilayer to arrange, thereby makes the capacity of boiler itself can't do very greatly.
A kind of boiler plant that adopts the cyclone firing method proposed by the invention has following advantage:
1) fuel that uses only needs simple crushing (particle diameter is no more than 5mm), thereby can simplify even cancel huge and complicated boiler milling system, saves the powder process power consumption greatly, saves cost;
2) flameholding;
Fuel enters behind the whirlwind tube bigger particle and can stick on the whirlwind tube inwall on formed one deck slag film, so fuel has the quite long holdup time in tube, and accumulating in the combustion chamber has considerable heat, and this helps to keep the continuity of combustion process.The scorching hot slag film of accumulating certain heat is extremely stable burning place.
3) calorific intensity height, boiler volume is little;
Because flame is at a high speed rotation in the whirlwind tube, disturbance is extremely strong, conducts heat, mass transfer condition is very good, and fuel particle is in the diffusion combustion district fully.Under high temperature action, the ash content in the fuel is fused into liquid slag fully.Because disturbance is strong, can adopt low oxygen combustion, under the normal combustion situation, the excess air coefficient α in the whirlwind tube is generally 1.05-1.1.High disturbance performance and high-temperature level in the whirlwind tube are the bases of cyclone firing boiler overheavy firing.Adopt the cyclone firing boiler, the metal wastage of whole boiler is greatly reduced, compare with the coal-powder boiler with capacity, can make the area of boiler room dwindle 25%, the boiler room volume dwindles 30%, and weight reduces 20-25%.
4) efficiency of combustion height, good economy performance;
Neither there be the stable necessity of the sort of maintenance grate layer in the grate firing in the cyclone firing mode, does not have also in the suspension combustion between the fuel particle and air that relative velocity levels off to zero, fuel particle is in the very short shortcoming of residing time in furnace.The cyclone firing boiler has very high ignition temperature, and good heat transfer and mass transfer condition have fully guaranteed the completing combustion of fuel, its loss of the inadequacy burning for chemistry mechanics reason q
3, unburned carbon loss q
4All less.Phosphorus content in the deslagging is general, and phosphorus content in the flying dust is far below general coal-powder boiler all less than 0.2%, and the flying dust share also is significantly less than coal-powder boiler.Because excess air coefficient α is less, so heat loss due to exhaust gas q
2Also less, boiler efficiency improves.
5) slag tap can adopt recirculated cooling water to concentrate towards sediment, thereby remove the ash disposal field from, solves the occupation of land problem of ash disposal field;
6) lime-ash retention efficiency height, fly ash content reduces greatly, makes the convection heating surface wearing and tearing alleviate;
7) boiler size compactness;
8) can use pluralities of fuel (as bituminous coal, brown coal, anthracite or even the junked tire of low-volatile, garbage derivatived thing etc.), fuel tolerance is wide;
9) boiler load regulating power big (only need the number of the whirlwind tube that puts into operation by minimizing can reach the requirement of boiler peak regulation, and operating condition can be not influenced in the whirlwind tube that other put into operation, thereby can guarantee it all is under optimum condition, to move);
10) lime-ash is convenient to comprehensive utilization;
11) alleviate the generation of high temperature corrosion phenomenon greatly.
Description of drawings
Fig. 1 uses the total apparatus structure schematic diagram of the present invention (comprise being modified into and adopt air classification combustion technology and the fuel device form of combustion technology again);
Wherein, 1 is the whirlwind tube; 2 is a wind inlet; 3 is the secondary wind inlet; 4 is the outlet of whirlwind tube spill; 5 is furnace hopper; 6 is liquid slag granulation water tank; 7 is the boiler main furnace chamber; 8 is the reburning fuel spout; 9 is after-flame wind (OFA) spout.
The specific embodiment:
Below in conjunction with accompanying drawing and specific embodiment the present invention is done and to describe in further detail:
Embodiment 1:
A kind of boiler plant that adopts the cyclone firing method as shown in Figure 1 mainly comprises whirlwind tube 1, boiler main furnace chamber 7 and liquid slag granulation water tank 6.Wherein whirlwind tube 1 is a cylinder-like structure, its internal structure characteristics are that close pin and the wear-resisting anticorrosive liner of one deck put of one deck laid on the water-cooling wall surface, front end at whirlwind tube 1 is furnished with wind inlet 2 one time, intermediate arrangement has secondary wind inlet 3, and its afterbody is by spill outlet 4 and 7 seamless links of boiler main furnace chamber; The bottom gradually-reducing shape of boiler main furnace chamber 7 partly is a furnace hopper 5, and the lower disposed of furnace hopper 5 has and is used for the granulation water tank 6 of granulation boiler slag tap.
In specific implementation process, send into the fuel gas stream of whirlwind tube by wind inlet, mix back acutely burning under the situation of excess air coefficient α＞1 (α=1.01～1.2) strongly with the secondary wind that the secondary wind inlet is sent into, owing to have very high ignition temperature (common more than 1650 ℃) and extremely strong disturbance ability in the whirlwind tube, the slag that can make burning form melts and sticks to and forms the liquid slag film on the barrel, and the liquid slag expelling tube forms slag tap outward.Fuel particle is when the whirlwind cylinder roasting, bigger particle since action of centrifugal force can stick on the whirlwind tube inwall on formed one deck slag film, form so-called " adhesion combustion ", fugitive constituent and thinner fuel then carry out suspension combustion in the whirlwind tube.Because burning is mainly finished in the whirlwind tube, the main furnace chamber of boiler is compared with coal-powder boiler and can be reduced relatively.
Embodiment 2:
The apparatus structure schematic diagram that the present invention is modified into employing air classification combustion technology as shown in Figure 1 mainly includes whirlwind tube 1, boiler main furnace chamber 7 and liquid slag granulation water tank 6.Wherein whirlwind tube 1 is a cylinder-like structure, its internal structure characteristics are that laying one deck close pin of putting in water-cooling wall surface adds the wear-resisting anticorrosive liner of one deck, front end at whirlwind tube 1 is furnished with wind inlet 2 one time, intermediate arrangement has secondary wind inlet 3, and its afterbody is by spill outlet 4 and 7 seamless links of boiler main furnace chamber; The certain position place, top of boiler main furnace chamber 7 is furnished with after-flame wind (OFA) spout 8, and the bottom gradually-reducing shape partly is a furnace hopper 5, and the lower disposed of furnace hopper 5 has and is used for the granulation water tank 6 of granulation boiler slag tap.
In specific implementation process: (1) is sent into the fuel gas stream of whirlwind tube by wind inlet, mixing the back strongly with secondary wind that the secondary wind inlet is sent into burns under the condition of excess air coefficient α＜1, form so-called fuel-rich combustion district, and generation contains finite concentration NO
xFlue gas; (2) reach the required surplus air of completing combustion and send into burner hearth by after-flame wind (OFA) spout that is arranged in certain position place, main furnace chamber top, the condition in excess air coefficient α＞1 is issued to completing combustion.Wherein, the excess air coefficient α in the fuel-rich combustion district in the described whirlwind tube of step (1) is 0.6～0.95, consider that simultaneously the cyclone firing boiler is when adopting conventional air classification combustion technology, reduction along with excess air coefficient in the whirlwind tube, make the temperature levels in the whirlwind tube also and then have reduction largely, this just might constitute a threat to keeping normal slag tap, therefore, as to further improvement of the present invention, according to actual coal-fired characteristics, the secondary wind inlet can adopt the air of sending into " oxygen enrichment " (be oxygen concentration greater than 21% air) as required, can make the interior primary zone of whirlwind tube oxygen concentration obtain bigger raising like this, because oxygen has very big combustion-supporting effect, make the ignition temperature in the whirlwind tube improve greatly, compare and to decrease with the normal combustion situation thereby can overcome the whirlwind cylinder roasting temperature that the cyclone firing boiler caused well when adopting conventional air classification combustion technology, and then may constitute certain this hidden danger that threatens normal slag tap in the whirlwind tube; Excess air coefficient α in the step (2) is 1.05～1.2, and send into after-flame wind (OFA) spout of the required surplus air of completing combustion can be according to concrete needs arranging multiplayer, and the air output of each interlayer can equate or do not wait.
Embodiment 3:
The conventional fuel apparatus structure schematic diagram of combustion technology is again adopted in the present invention is modified into as shown in Figure 1, mainly includes whirlwind tube 1, boiler main furnace chamber 7 and liquid slag granulation water tank 6.Wherein whirlwind tube 1 is a cylinder-like structure, its internal structure characteristics are that laying one deck close pin of putting in water-cooling wall surface adds the wear-resisting anticorrosive liner of one deck, front end at whirlwind tube 1 is furnished with wind inlet 2 one time, intermediate arrangement has secondary wind inlet 3, and its afterbody is by spill outlet 4 and 7 seamless links of boiler main furnace chamber; The certain position place, top of boiler main furnace chamber 7 is furnished with reburning fuel spout 8 and after-flame wind (OFA) spout 9 respectively, and the bottom gradually-reducing shape partly is a furnace hopper 5, and the lower disposed of furnace hopper 5 has and is used for the granulation water tank 6 of granulation boiler slag tap.
In specific implementation process: the wind fuel gas stream that (1) carries main fuel enters the whirlwind tube by a wind inlet, by mixing after-combustion strongly with secondary wind that the secondary wind inlet is sent into, in the whirlwind tube, form so-called primary zone, and generation contains finite concentration NO
xFlue gas; (2) send into the reburning fuel air-flow by the reburning fuel spout that is arranged in boiler main furnace chamber certain position place, form so-called reburning zone in this zone, the strong reducing property atmosphere in this district not only makes the NO that the primary zone has generated
xObtain reduction, but also suppressed new NO
xGenerate, can make NO
xConcentration of emission further reduce; (3) spray into from the after-flame wind snout that is arranged in boiler main furnace chamber top certain position and reach the required surplus air of completing combustion, form burning-out zone.Wherein the main fuel sent into of the described primary zone of step (1) accounts for 70%～85% of the total fuel of boiler, and excess air coefficient α is 0.9～1.1; The reburning fuel that the described reburning zone of step (2) is sent into accounts for 15%～30% of the total fuel of boiler, and excess air coefficient α is 0.7～0.95; The described burning-out zone excess air coefficient of step (3) α is 1.05～1.2.
Above content is to further describing that the present invention did in conjunction with concrete preferred implementation; can not assert that the specific embodiment of the present invention only limits to this; for the general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine scope of patent protection by claims of being submitted to.
Claims (8)
1. boiler plant that adopts the cyclone firing method, it is characterized in that: comprise whirlwind tube, boiler main furnace chamber and liquid slag granulation water tank, front end at the whirlwind tube is furnished with wind inlet one time, the intermediate arrangement of whirlwind tube has the secondary wind inlet, and the afterbody of whirlwind tube is by spill outlet and the seamless link of boiler main furnace chamber; The bottom gradually-reducing shape of boiler main furnace chamber partly is a furnace hopper, and the lower disposed of furnace hopper has and is used for the granulation water tank of granulation boiler slag tap.
2. a kind of according to claim 1 boiler plant that adopts the cyclone firing method is characterized in that: the top of described boiler main furnace chamber is arranged reburning fuel spout and after-flame wind snout respectively.
3. a kind of according to claim 1 boiler plant that adopts the cyclone firing method, it is characterized in that: described whirlwind tube is a cylinder-like structure, diameter is about 1.5-3m, is equipped with close pin and the wear-resisting anticorrosive liner of one deck put of one deck on the water-cooling wall surface of cylinder-like structure inside.
4. a kind of according to claim 1 boiler plant that adopts the cyclone firing method is characterized in that: described whirlwind tube adopts one-sided multilayer layout, bilateral symmetry multilayer to arrange and the setting of the asymmetric multilayer arrangement of bilateral.
5. a kind of according to claim 1 boiler plant that adopts the cyclone firing method is characterized in that: described after-flame wind snout arranging multiplayer, and the air output of each interlayer equates or does not wait.
6. a kind of according to claim 1 boiler plant that adopts the cyclone firing method is characterized in that: described furnace hopper is the gradually-reducing shape structure, and furnace hopper makes the liquid slag inflow be positioned at its beneath granulation water tank.
7. a kind of according to claim 1 boiler plant that adopts the cyclone firing method is characterized in that: the described fuel particle diameter that uses is no more than 5mm.
8. a kind of according to claim 1 boiler plant that adopts the cyclone firing method is characterized in that: according to actual coal-fired characteristics, described secondary wind inlet can adopt the air of " oxygen enrichment " as required.
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| CN102563625A (en) * | 2012-01-16 | 2012-07-11 | 华中科技大学 | Oxygen-enriched combustion method for pulverized coal |
| CN105465771A (en) * | 2015-11-06 | 2016-04-06 | 广东工业大学 | Cyclone type coarse pulverized coal gasified combustion device |
| CN105910097A (en) * | 2016-06-06 | 2016-08-31 | 西安交通大学 | System and method for achieving fuel reburning denitration through whirlwind cylinder grading of power station boiler |
| CN106765061A (en) * | 2017-01-05 | 2017-05-31 | 东方电气集团东方锅炉股份有限公司 | Burner region variable cross-section adapts to the Pulverized Coal fired Boiler Furnace of flexibility peak regulation |
| CN107975782A (en) * | 2017-11-22 | 2018-05-01 | 西安交通大学 | The fractional combustion steam generator system and method for a kind of slag combustion with meagre oxygen catalysis oxidation |
| CN108397249A (en) * | 2018-03-30 | 2018-08-14 | 四川雷鸣环保装备有限公司 | Coal-fired coupled biological matter, rubbish, sludge gasification burning cogeneration system and technique |
| CN109000219A (en) * | 2017-06-07 | 2018-12-14 | 中国科学院工程热物理研究所 | Vertical pulverized-coal fired boiler |
| CN110822441A (en) * | 2019-10-30 | 2020-02-21 | 西安石油大学 | Efficient low-pollution combustion system of cyclone melting furnace for co-combustion of urban solid wastes |
| CN114396631A (en) * | 2022-01-21 | 2022-04-26 | 天津大学 | Liquid slag-discharging cyclone furnace with three-section secondary air regulating door |
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| CN102563625A (en) * | 2012-01-16 | 2012-07-11 | 华中科技大学 | Oxygen-enriched combustion method for pulverized coal |
| CN105465771A (en) * | 2015-11-06 | 2016-04-06 | 广东工业大学 | Cyclone type coarse pulverized coal gasified combustion device |
| WO2017075969A1 (en) * | 2015-11-06 | 2017-05-11 | 广东工业大学 | Cyclone coarse coal powder gasification combustion device |
| CN105910097A (en) * | 2016-06-06 | 2016-08-31 | 西安交通大学 | System and method for achieving fuel reburning denitration through whirlwind cylinder grading of power station boiler |
| CN106765061B (en) * | 2017-01-05 | 2023-07-11 | 东方电气集团东方锅炉股份有限公司 | Pulverized coal boiler furnace with variable cross section of burner area and flexibility peak regulation |
| CN106765061A (en) * | 2017-01-05 | 2017-05-31 | 东方电气集团东方锅炉股份有限公司 | Burner region variable cross-section adapts to the Pulverized Coal fired Boiler Furnace of flexibility peak regulation |
| CN109000219A (en) * | 2017-06-07 | 2018-12-14 | 中国科学院工程热物理研究所 | Vertical pulverized-coal fired boiler |
| CN107975782A (en) * | 2017-11-22 | 2018-05-01 | 西安交通大学 | The fractional combustion steam generator system and method for a kind of slag combustion with meagre oxygen catalysis oxidation |
| CN107975782B (en) * | 2017-11-22 | 2019-04-12 | 西安交通大学 | A kind of the fractional combustion boiler system and method for slag combustion with meagre oxygen catalysis oxidation |
| CN108397249A (en) * | 2018-03-30 | 2018-08-14 | 四川雷鸣环保装备有限公司 | Coal-fired coupled biological matter, rubbish, sludge gasification burning cogeneration system and technique |
| CN108397249B (en) * | 2018-03-30 | 2023-07-25 | 四川雷鸣环保装备有限公司 | Coal-fired coupled biomass, garbage and sludge gasification combustion cogeneration device and process |
| CN110822441A (en) * | 2019-10-30 | 2020-02-21 | 西安石油大学 | Efficient low-pollution combustion system of cyclone melting furnace for co-combustion of urban solid wastes |
| CN114396631A (en) * | 2022-01-21 | 2022-04-26 | 天津大学 | Liquid slag-discharging cyclone furnace with three-section secondary air regulating door |
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