CN1529088A - Method and apparatus for flyash bottom-feeding circulating fluidized bed for fire-resistance fuel - Google Patents
Method and apparatus for flyash bottom-feeding circulating fluidized bed for fire-resistance fuel Download PDFInfo
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- CN1529088A CN1529088A CNA2003101060478A CN200310106047A CN1529088A CN 1529088 A CN1529088 A CN 1529088A CN A2003101060478 A CNA2003101060478 A CN A2003101060478A CN 200310106047 A CN200310106047 A CN 200310106047A CN 1529088 A CN1529088 A CN 1529088A
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- ash
- nozzle
- flying dust
- nozzle body
- cap
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- 239000010881 fly ash Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000000446 fuel Substances 0.000 title claims description 14
- 238000002485 combustion reaction Methods 0.000 claims abstract description 42
- 238000005507 spraying Methods 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims description 39
- 239000002956 ash Substances 0.000 claims description 30
- 239000000839 emulsion Substances 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 6
- -1 chromium nickel rare earth Chemical class 0.000 claims description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims description 3
- 239000003546 flue gas Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 10
- 238000009841 combustion method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 239000000779 smoke Substances 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 10
- 239000003245 coal Substances 0.000 description 6
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 5
- 239000003830 anthracite Substances 0.000 description 5
- 239000000571 coke Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000004939 coking Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000003134 recirculating effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000004058 oil shale Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention provides a kind of fly ash bottom feeding circular fluidized-bed combustion method and the device, the method is: uses fly ash collector to collect the fly ash with high content in smoke, the fly ash are put into the back material controller through vertical pipe, then and they are carried to the return pipe through transmitting and ejector, and they are returned to the thick phase area of bed through bottom feeding spraying muzzle which is high temperature resisting and corrosion resisting. The device is: it is made up of fly ash collector, back material controller, gas transmitting ejector and the combustion furnace. The top of the combustion furnace connects with the inlet of fly ash collector, the fly ash through the fly ash collector outlet, are carried to the thick phase area of combustion furnace through the bottom feeding sprayer with gas transmitting ejector. The invention can enhance the combustion effect of the fly ash; it can save energy and protect the environment.
Description
One, technical field
The present invention relates to a kind of combustion method and device thereof that uses anthracite, poor matchmaker or other difficult combustion fuel, relate in particular to a kind of Fly Ash Bottom-feeding Circulating Fluidized Bed Combustion Method And Device Used For Retardant Fuel.
Two, background technology
Prevailing coal resources are very abundant in China's energy resource structure, but wherein colms such as low volatile anthracite and high grey high-sulfur occupy suitable ratio, distributed pole is wide, sufficiently and reasonably utilizes this part coal resources, has great economic benefit and social benefit.
CFBC has outstanding advantages such as combustion intensity is big, combustion stability good, fuel tolerance is wide, can use high ash content, high-moisture, low-calorie fuel as gangue, oil shale, comprise volatile matter that other boilers are difficult to burn the only higher slag of 2%～3% anthracite and combustible content, coke fines, petroleum coke etc., realize comprehensive utilization of resources.In addition, CFBC belongs to low-temperature burning, and the nitrogen oxide that generates in the combustion process is few, and recirculating fluidized bed also can be realized an interior desulfurization simultaneously, has alleviated the pollution to environment greatly.
Present recirculating fluidized bed fly-ash reburning technology employing face is substantially raised mode, and the flying dust that promptly circulates enters combustion again in the stove from bed emulsion zone surface.This mode major advantage of strile-bacing is that the flying dust circulatory system flows more unobstructed because a back pressure of strile-bacing is low, and power consumption is low.Simultaneously also because higher and " attached wall " effect in a position of strile-bacing, the flying dust that strile-backs is shorter in the furnace high-temperature district time of staying, cause and use active relatively poor anthracite or meager coal and the lower low capacity fluidized-bed combustion boiler afterbody unburned combustible in fly ash height of furnace height, boiler efficiency is low, and has caused a large amount of energy wastes.
Three, summary of the invention
The present invention is directed to and use active relatively poor anthracite, meager coal or other difficult combustion fuel and the lower fluidized-bed combustion boiler of furnace height; the Fly Ash Bottom-feeding Circulating Fluidized Bed Combustion Method And Device Used For Retardant Fuel of heat and mass transfer between a kind of time of staying of being intended to increase circulation flying dust emulsion zone in stove and gas-solid is provided; it can improve the flying dust burn-out degree, reaches energy savings, protection environment purpose.
The method of the invention technical scheme is: a kind of difficult combustion fuel is raised the CFBC method at the bottom of with flying dust, catch with the flying dust that fly-ash collector 1 is higher with combustible content in the flue gas, make flying dust enter feed back controller 3 through standpipe 2, deliver to the loopback pipe by delivery injector 5 then, raise nozzle 9 by high temperature resistant, the wear-resisting end again and return interior emulsion zone 41 burning.
Device of the present invention is: burner, form by fly-ash collector 1, feed back controller 3, strength delivery injector 5 and combustion furnace 4, the top of combustion furnace 4 links to each other with the import of fly-ash collector 1, flying dust through fly-ash collector 1 outlet, behind feed back controller 3, make raise the emulsion zone 41 that nozzle 9 is delivered to combustion furnace 4 its end in being located at combustion furnace 4 by strength delivery injector 5.
Compared with prior art, the present invention has following advantage:
1. the method that the flying dust that circulates is carried by strength is passed air compartment and air distribution plate from furnace bottom, ejection was scattered around nozzle was raised at the 100mm place from high temperature resistant, the wear-resisting end on air distribution plate, combustion reaction takes place in emulsion zone and oxygen once more in bed, prolonged the time of staying of circulation flying dust emulsion zone in bed, increase the purpose of circulation flying dust, thereby reach the purpose of effective reduction unburned combustible in fly ash at the combustion share of emulsion zone.The feed back controller is advanced fluidisation gas control device, has self-balancing ability, guarantees flying dust continous-stable circulation in the system of high back pressure.The design of delivery injector has taken into full account the variation of coal, and the flying dust internal circulating load changes (because the calorific value of coal and influence of granularity) in a big way, all can guarantee the stable loopback of flying dust.
It is disc that nozzle form is raised at the end, adopts high temperature resistant, wear-resisting rare earth alloy, can bear long term high temperature and flying dust washes away, even it is also excellent that a coking takes place in the bed, disc-shape does not influence the removing coke button.
Be provided with the lime-ash dredger, at any time all can dredge because the unimpeded for a long time of fly-ash reburning system guaranteed in startup, banking fire and move the improper end of causing and raise the obstruction of nozzle and its underpart vertical tube.Particularly can not drop into the flying dust circulation end during boiler startup and raise the system of strile-bacing, wait to start and finish the back and drop into this system, so this system not influence boiler startup.
2. compare with existing material returning device, the specific embodiments of feed back controller of the present invention has the following advantages: in raising the CFBC mode at the bottom of the flying dust, pressure reduction is much higher than the regular circulation fluid bed between combustion chamber and the separator, therefore also will more above-mentioned material returning device height to the requirement of feed back controller sealing property.The utility model is provided with standpipe, especially makes standpipe stretch into housing, and its end is not less than the summit at solid accumulation angle, and the resistance that gas " anti-channeling " to separator will be overcome increases, and leakage rate reduces, thereby has improved sealing property of the present utility model.The directed wind that pressure is high will further stop to such an extent that the gas in the combustion chamber enters in the material returning device, make the sealing property of feeder that further raising arranged.The utility model changes side air inlet into bottom air inlet, the mode that adopts directed wind and vertically-supplying air to combine, tissue has effectively been carried out in the motion of solid particle, loop seal uncontrollable like this and that regulate becomes controlled valve, promptly can control the flow of solid particle, guarantee the stability of stove internal combustion, therefore the utlity model has controllable valve and venting valve advantage separately.The utility model adopts cap cloth wind mode in the aperture, and cloth wind is even in the material returning device bed, and solid particle is carried stable, has avoided because the bad coking that causes of fluidisation in the bed was lost efficacy material returning device.
3. the specific embodiments that nozzle is raised at the end of the present invention has the following advantages: because the effect of cap of spraying nozzle body of the present utility model, make lime-ash be difficult for entering and cause obstruction in the nozzle, and flying dust sprays mixing of other material in back and the bed from the side and diffusion in bed is better than top drilling structure, flying dust sprays mixing of back and interior other material of bed from the side, increased the time of staying of flying dust emulsion zone in bed, help burning of carbon residue in the flying dust, normally move thereby help system, help raising at the bottom of the flying dust the normal operation of recirculating fluidized bed.Nozzle is raised at the end that high chromium nickel rare earth alloy nozzle body and high chromium nickel rare earth alloy cap of spraying nozzle body are formed, and makes to the utlity model has high temperature resistant, wear-resisting advantage, guaranteed nozzle under mal-condition for a long time, stably work and do not lose efficacy.The utility model is raised its shape of nozzle the end of with and is set at disc and discharge opening is opened in the side of nozzle body, and it is more reasonable that gas-solid is flowed, therefore under the situation of identical material, because that flying dust washes away the wearing and tearing that cause is littler.In addition, discoidal structure helps ignition of the boiler and drags for the burnt process of beating after coke button and the coking, and is difficult for by coke button bonding and together take boiler out of.Really good disc-shaped structure helps the even distribution of flying dust in bed, has avoided simultaneously at outlet faying face place because thermal stress is concentrated the cracking that causes.
4. the specific embodiments that lime-ash of the present invention is dredged block apparatus has the following advantages: during the utility model work, open valve plate, lime-ash will be under the effect of pressure and self gravitation, from the standpipe of fluidized-bed combustion boiler, fall, leave standpipe, close valve plate, again ventilate, it is normal that boiler recovers again, therefore, after setting up this thin block apparatus, under the prerequisite that does not influence the normal operation of boiler, can be rapid, resolution system blocking problem effectively, thereby guaranteed that the whole flying dust circulatory system is continuous, operation stably, avoided the loss that causes because of shutdown maintenance, helped to reduce the operating cost of flying dust CFBB, and helped the flying dust CFBB and normally move.The effect of slag ladle is in the mediation process, stores lime-ash temporarily, in order to avoid the high-temperature ash ejection is hurted sb.'s feelings or contaminated environment, after each mediation, opens the plate of slag ladle bottom lime-ash is emitted.
Four, description of drawings
Fig. 1 a is an embodiment of the invention structural representation, and Fig. 1 b is another embodiment of the present invention structural representation.
Fig. 2 is the structural front view of feed back controller of the present invention.
Fig. 3 is the structure vertical view of feed back controller of the present invention.
Fig. 4 is the structural representation of feed back controller guiding blast cap of the present invention.
Fig. 5 is the structure cutaway view of feed back controller guiding blast cap of the present invention.
Fig. 6 is the structural representation of feed back controller blast cap of the present invention.
Fig. 7 is the structure cutaway view of feed back controller blast cap of the present invention.
Fig. 8 is the distribution map of feed back controller blast cap of the present invention and guiding blast cap.
Fig. 9 raises the structure of nozzle front view in the end of the present invention.
Figure 10 raises the structure of nozzle vertical view in the end of the present invention.
Figure 11 is that lime-ash of the present invention is dredged the block apparatus structural front view.
Figure 12 is that lime-ash of the present invention is dredged block apparatus structure vertical view.
Figure 13 is the structural front view of strength delivery injector of the present invention.
Figure 14 is the structure left view of strength delivery injector of the present invention.
Figure 15 is the structural front view that fly-ash collector embodiment of the present invention is a cyclone separator.
Figure 16 is the structure left view that fly-ash collector embodiment of the present invention is a cyclone separator.
Five, specific embodiments
The difficult combustion of 1 one kinds of embodiment fuel are raised the CFBC method at the bottom of with flying dust, with fly-ash collector 1 as: the electrostatic precipitator flying dust that combustible content in the flue gas is higher catches, make flying dust enter feed back controller 3 through standpipe 2, deliver to the loopback pipe by delivery injector 5 then, raise nozzle 9 by high temperature resistant, the wear-resisting end again and return interior emulsion zone 41 burning.
2 one kinds of burners that are used to implement said method of embodiment, by fly-ash collector 1, feed back controller 3, strength delivery injector 5 and combustion furnace 4 are formed, the top of combustion furnace 4 links to each other with the import of fly-ash collector 1, flying dust through fly-ash collector 1 collection, behind feed back controller 3, make its end on the air distribution plate in being located at combustion furnace 4 raise the emulsion zone 41 that nozzle 9 is delivered to combustion furnace 4 by strength delivery injector 5, feed back controller 3 comprises housing 31, in housing 31, be provided with a body 311 and air compartment 312, between bed body 311 and air compartment 312, be provided with air distribution plate 32, on air compartment 312, be provided with air inlet, on bed body 311, be provided with standpipe 33 and ash discharging pipe 34, standpipe 33 stretches into housing 31, its end is not less than the summit at solid accumulation angle, in bed body 311 and between standpipe 33 and ash discharging pipe 34, be provided with dividing plate 35, on air distribution plate 32, be provided with the wind hole, on the wind hole of the air distribution plate 32 that is positioned at standpipe 33 lower zones, be provided with guiding blast cap 321, on guiding blast cap 321, be provided with guiding wind hole, this guiding wind hole by the axial exhaust vent 3211 that communicates and radially exhaust vent 3212 form, radially exhaust vent 3212 is towards exit side, on the wind hole of the air distribution plate 32 that is positioned at the exit side lower zone, be provided with blast cap 322, on blast cap 322, be provided with fresh air inlet, this fresh air inlet is made up of the axial hole 3221 and the radial hole 3222 of intercommunication, in air compartment 312 and the boundary position that is positioned at guiding blast cap 321 and blast cap 322 be provided with air compartment baffle 36, and on two air compartments that are separated thus, air inlet 3121 and 3122 are set respectively, strength delivery injector 5 is by blast pipe 51, ash inlet tube 52, cement output tank 53 and nozzle 54 are formed, nozzle 54 is positioned on the center line of delivery injector 5, nozzle 54 is towards cement output tank 53, nozzle 54 tops are provided with ash inlet tube 52, nozzle 54 rear side are provided with blast pipe 51, raise nozzle 9 and be made up of nozzle body 91 and cap of spraying nozzle body 92 at the end, cap of spraying nozzle body 92 is located on the nozzle body 91, on nozzle body 91, be provided with charging hole 911 and discharge opening 912, cap of spraying nozzle body 92 is a disc-shape, nozzle body 91 is a column, cap of spraying nozzle body 92 is high chromium nickel rare earth alloy cap of spraying nozzle body, nozzle body 91 is the rare alloy nozzle body of going up of high chromium nickel, charging hole 911 is the axial admission hole, discharge opening 912 is discharge opening radially, the ash discharging pipe 34 of feed back controller 3, the cement output tank 53 of strength delivery injector 5 is communicated with horizontal tube 6, be communicated with uprise 8 on horizontal tube 6, the another port of uprise 8 communicates with the charging hole 911 that nozzle 9 is raised at the end, and discharge opening 912 has 8 and circumferentially evenly distributing along nozzle body, connecting portion at uprise 8 and horizontal tube 6 is provided with lime-ash dredger 7, this lime-ash dredger 7 is made up of valve body 711 and valve plate 712, is provided with interface 73 on valve body 711, valve plate 712 be located on the valve body 711 and be positioned at interface 73 below, be provided with outlet 7111 in the bottom of valve body 711, be provided with airtight and watertight padding case 713 on valve body 711, be provided with pull bar 7121 on valve plate 712, pull bar 7121 is by airtight and watertight padding case 713 and stretch out airtight and watertight padding case 713, outlet 7111 places at valve body 711 are provided with slag ladle 72, be provided with ash hole 724 in the bottom of slag ladle 72, be provided with plate 723 on ash hole 724, slag ladle 72 is made up of cylindrical shell 721 and cone 722, cylindrical shell 721 is located at cone 722 tops and docks with the outlet 7111 of valve body 711, be provided with guide rail 714 on valve body 71, valve plate 712 is located on the guide rail 714, and fly-ash collector 1 adopts cyclone separator, cyclone separator is by cylindrical shell 13, cone 14, ash bucket 15, inlet flue duct 11 and exhaust pass 12 constitute, cyclone separator is arranged in combustion furnace 4 outlets, and the combustion furnace exhaust pass links to each other with cyclone inlet, and the cyclone separator outlet links to each other with combustion furnace 4 tail vertical well.
Claims (10)
1, a kind of difficult combustion fuel is raised the CFBC method at the bottom of with flying dust, it is characterized in that catching with fly-ash collector (1) flying dust that combustible content in the flue gas is higher, make flying dust enter feed back controller (3) through standpipe (2), deliver to the loopback pipe by strength delivery injector (5) then, raise nozzle (9) by high temperature resistant, the wear-resisting end again and return interior emulsion zone (a 41) burning.
2, a kind of burner that is used to implement the described method of claim 1, it is characterized in that forming by fly-ash collector (1), feed back controller (3), strength delivery injector (5) and combustion furnace (4), the top of combustion furnace (4) links to each other with the import of fly-ash collector (1), flying dust through fly-ash collector (1) outlet, behind feed back controller (3), make raise the emulsion zone (41) that nozzle (9) is delivered to combustion furnace (4) its end in being located at combustion furnace (4) by strength delivery injector (5).
3, difficult combustion fuel according to claim 2 is raised burning device of circulating fluidized bed at the bottom of with flying dust, it is characterized in that feed back controller (3) comprises housing (31), it is characterized in that in housing (31), being provided with a body (311) and air compartment (312), between bed body (311) and air compartment (312), be provided with air distribution plate (32), on air compartment (312), be provided with air inlet, on bed body (311), be provided with standpipe (33) and ash discharging pipe (34), standpipe (33) stretches into housing (31), its end is not less than the summit at solid accumulation angle, in bed body (311) and be positioned between standpipe (33) and the ash discharging pipe (34) and be provided with dividing plate (35), on air distribution plate (32), be provided with the wind hole.
4, difficult combustion fuel according to claim 3 is raised burning device of circulating fluidized bed at the bottom of with flying dust, it is characterized in that on the wind hole of the air distribution plate (32) that is positioned at standpipe (33) lower zone, being provided with guiding blast cap (321), on guiding blast cap (321), be provided with guiding wind hole, this guiding wind hole by the axial exhaust vent (3211) that communicates and radially exhaust vent (3212) form, radially exhaust vent (3212) is towards exit side, on the wind hole of the air distribution plate that is positioned at the exit side lower zone (32), be provided with blast cap (322), on blast cap (322), be provided with fresh air inlet, this fresh air inlet is made up of the axial hole (3221) and the radial hole (3222) of intercommunication, in air compartment (312) and the boundary position that is positioned at guiding blast cap (321) and blast cap (322) be provided with air compartment baffle (36), and air inlet (3121 and 3122) is set respectively on two air compartments that are separated thus.
5, according to claim 2 or 3 described burners, it is characterized in that strength delivery injector (5) is made up of blast pipe (51), ash inlet tube (52), cement output tank (53) and nozzle (54), nozzle (54) is positioned on the center line of delivery injector (5), nozzle (54) is towards cement output tank (53), nozzle (54) top is provided with ash inlet tube (52), and nozzle (54) rear side is provided with blast pipe (51).
6, difficult combustion fuel according to claim 5 is raised burning device of circulating fluidized bed at the bottom of with flying dust, it is characterized in that the end raises nozzle (9) and be made up of nozzle body (91) and cap of spraying nozzle body (92), cap of spraying nozzle body (92) is located on the nozzle body (91), on nozzle body (91), be provided with charging hole (911) and discharge opening (912), cap of spraying nozzle body (92) is a disc-shape, nozzle body (91) is a column, cap of spraying nozzle body (92) is high chromium nickel rare earth alloy cap of spraying nozzle body, nozzle body (91) is high chromium nickel rare earth alloy nozzle body, charging hole (911) is the axial admission hole, discharge opening (912) is discharge opening radially, the ash discharging pipe (34) of feed back controller (3), the cement output tank (53) of strength delivery injector (5) is communicated with horizontal tube (6), be communicated with uprise (8) on horizontal tube (6), the another port of uprise (8) communicates with the charging hole (911) that nozzle (9) are raised at the end.
7, burner according to claim 6 is characterized in that discharge opening (912) has 8 and circumferentially evenly distributing along nozzle body.
8, burner according to claim 5, it is characterized in that being provided with lime-ash dredger (7) at the connecting portion of uprise (8) and horizontal tube (6), this lime-ash dredger (7) is made up of valve body (711) and valve plate (712), on valve body (711), be provided with interface (73), valve plate (712) be located at valve body (711) go up and be positioned at interface (73) below, be provided with outlet (7111) in the bottom of valve body (711), on valve body (711), be provided with airtight and watertight padding case (713), on valve plate (712), be provided with pull bar (7121), pull bar (7121) is by airtight and watertight padding case (713) and stretch out airtight and watertight padding case (713), outlet (7111) in valve body (711) locates to be provided with slag ladle (72), be provided with ash hole (724) in the bottom of slag ladle (72), on ash hole (724), be provided with plate (723).
9, burner according to claim 8, it is characterized in that slag ladle (72) is made up of cylindrical shell (721) and cone (722), cylindrical shell (721) is located at cone (722) top and docks with the outlet (7111) of valve body (711), be provided with guide rail (714) on valve body (71), valve plate (712) is located on the guide rail (714).
10, burner according to claim 2, it is characterized in that fly-ash collector (1) adopts cyclone separator, cyclone separator is made of cylindrical shell (13), cone (14), ash bucket (15), inlet flue duct (11) and exhaust pass (12), cyclone separator is arranged in combustion furnace (4) outlet, the combustion furnace exhaust pass links to each other with cyclone inlet, and the cyclone separator outlet links to each other with combustion furnace (4) tail vertical well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310106047 CN1257361C (en) | 2003-10-13 | 2003-10-13 | Method and apparatus for flyash bottom-feeding circulating fluidized bed for fire-resistance fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310106047 CN1257361C (en) | 2003-10-13 | 2003-10-13 | Method and apparatus for flyash bottom-feeding circulating fluidized bed for fire-resistance fuel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1529088A true CN1529088A (en) | 2004-09-15 |
| CN1257361C CN1257361C (en) | 2006-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310106047 Expired - Lifetime CN1257361C (en) | 2003-10-13 | 2003-10-13 | Method and apparatus for flyash bottom-feeding circulating fluidized bed for fire-resistance fuel |
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| CN (1) | CN1257361C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187471B (en) * | 2007-06-27 | 2010-08-18 | 巩义市泰华机械厂 | Taper tube and ash returning pump and ash recombustion type circulated fluid bed combustion equipment |
| CN102095195A (en) * | 2011-01-11 | 2011-06-15 | 清华大学 | Reburning type circulating fluidized bed boiler |
| CN102927564A (en) * | 2012-12-04 | 2013-02-13 | 重庆大学 | Method of reducing fly ash carbon content of circulating fluidized bed boiler |
| WO2016119670A1 (en) * | 2015-01-30 | 2016-08-04 | 武汉凯迪工程技术研究总院有限公司 | Blend combustion method of fuel coal fly ash for biomass circulating fluidized bed boiler and device thereof |
-
2003
- 2003-10-13 CN CN 200310106047 patent/CN1257361C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187471B (en) * | 2007-06-27 | 2010-08-18 | 巩义市泰华机械厂 | Taper tube and ash returning pump and ash recombustion type circulated fluid bed combustion equipment |
| CN102095195A (en) * | 2011-01-11 | 2011-06-15 | 清华大学 | Reburning type circulating fluidized bed boiler |
| CN102095195B (en) * | 2011-01-11 | 2013-04-17 | 清华大学 | Reburning type circulating fluidized bed boiler |
| CN102927564A (en) * | 2012-12-04 | 2013-02-13 | 重庆大学 | Method of reducing fly ash carbon content of circulating fluidized bed boiler |
| CN102927564B (en) * | 2012-12-04 | 2015-04-08 | 重庆大学 | Method of reducing fly ash carbon content of circulating fluidized bed boiler |
| WO2016119670A1 (en) * | 2015-01-30 | 2016-08-04 | 武汉凯迪工程技术研究总院有限公司 | Blend combustion method of fuel coal fly ash for biomass circulating fluidized bed boiler and device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1257361C (en) | 2006-05-24 |
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