CN101050861A - Flyash impact collector and its use in powder coal boiler - Google Patents
Flyash impact collector and its use in powder coal boiler Download PDFInfo
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- CN101050861A CN101050861A CN 200710017497 CN200710017497A CN101050861A CN 101050861 A CN101050861 A CN 101050861A CN 200710017497 CN200710017497 CN 200710017497 CN 200710017497 A CN200710017497 A CN 200710017497A CN 101050861 A CN101050861 A CN 101050861A
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Abstract
A fly ash impact collector is prepared for cutting of partial pipe wall of round steel pipe along axial direction, making cut off pipe wall be less than radius of round steel pipe and opening vertical seam passing through pipe wall at center of the rest pipe wall. The pulverized-coal boiler applying said fly ash impact collector is also disclosed.
Description
Technical field
The present invention relates to a kind of device, be specifically related to the application of a kind of flyash impact collector and flyash impact collector thereof.
Background technology
The ash content of the most of fuel coal of power station boiler of China is higher, flying dust concentration height in the flue gas, and this has increased the weight of the burden of deduster greatly.On the one hand, make taking up room of electric cleaner increasing (being that the electric field number increases), total power consumption is more and more higher; On the other hand, after unit put into operation, the actual coal-fired ash content of part boiler caused this part power plant problems such as electric cleaner undercapacity and soot emissions increase generally to occur greater than design coal, and this has not only seriously influenced the normal operation of station boiler; Polluted the environment of power plant and surrounding area thereof simultaneously.
At present, when addressing the above problem, adopt the mode that strengthens electric cleaner specific collection area (promptly increasing the electric field number) to improve it usually and exert oneself, in addition, as if do not have better solution.In fact, also can alleviate the burden of electric cleaner, save its power consumption, solve problems such as its undercapacity and smoke discharge amount height simultaneously by the mode that reduces electric cleaner inlet dust concentration.The present invention designs according to this thinking.Concrete measure is that the correct position place is provided with flying dust gathering-device and system on the connection flue between behind air preheater, before the electric cleaner, reduce deduster inlet dust concentration with this, this has great practical significance to solving the comparatively ubiquitous undercapacity of coal-burning boiler electric cleaner, smoke dust discharge concentration height, the electric cleaner performance driving economy etc. big and that improve electric cleaner that takes up room.
Summary of the invention
The problems referred to above at the electric cleaner existence, the purpose of this invention is to provide the application of a kind of flyash impact collector and this flyash impact collector, verify through the applicant, this flyash impact collector can be used between pulverized-coal fired boiler air preheater and the deduster on the flue, do not need external power, utilize the soot particle settling character to collect flying dust in the flue gas, can effectively reduce the dust concentration of deduster inlet, make deduster be in nominal output or following operation, can effectively improve service life, efficiency of dust collection and the performance driving economy of deduster.
In order to realize above-mentioned task, the present invention is achieved by following technical proposals:
A kind of flyash impact collector is characterized in that, it comprises a round steel pipe, this round steel pipe tube wall excision part vertically, and the tube wall of cut-out is less than the radius of round steel pipe, and the tube wall center of remainder has the straight slot that penetrates tube wall.
Above-mentioned flyash impact collector is used for the application that the pulverized-coal fired boiler flue is collected flying dust.
By installing flyash impact collector additional at the original flue correct position of boiler place; its otch is over against flue gas flow direction, collecting the 5%-10% soot particle in the flue gas, and by its corollary system with the soot particle collected or enter the original dust removing system of boiler; or enter slag bath, or enter special-purpose ashes storehouse.With problems such as solution deduster undercapacities; Simultaneously, can reduce the power consumption of electric cleaner self and improve its dust removing effects.
The present invention has following technical characterstic:
1, the present invention can collect the fly ash granule about about 10%-30% in the flue gas get off by installing flyash impact collector and system thereof on the flue before electric cleaner additional, and by this system the dust of collecting is sent into the ash field or done its usefulness.Like this, the dust concentration that enters in the electric cleaner will be reduced to original 70%-90%, to guarantee or to optimize the condition of work of electric cleaner.
2, this flyash impact collector connects correct position place on the flue between being arranged in before air preheater and the deduster, the flue-gas temperature of its working environment is not more than 200 ℃, little negative pressure, flyash impact collector itself does not bear pressure, the reliability height, continuous operation for a long time will be expected to become the conventional auxiliary equipment of boiler after engineering is used maturation.
3, this flyash impact receipts machine for collecting load and system are reasonable in design, novel structure, and arrangement is simple, and system is simple, is very easy to implement, and can be used for any combustion system boiler.Both can be used for the active service boiler improvement, also can directly design in newly constructed boiler.
4. this flyash impact receipts machine for collecting load and system thereof utilize the settling property of soot particle and deadweight to collect soot particle, and it are entered slag bath or dust removing system without any need for external power.
5, for the active service boiler, adopt this flyash impact collector that the flue system resistance is slightly increased, and the resistance that is increased is directly proportional with the flying dust collection rate of flyash impact collector, the flying dust collection rate that requires is high more, the quantity of gatherer is many more, the area that takies flue is big more, and its resistance increase is also big more.But its resistance value added can design, be controlled in the 30-50Pa scope, and this value is (being the resistance that flue system allows to increase 30-50Pa) in the controlled range of flue system resistance, can not influence the operation of air and flue system.
Description of drawings
Fig. 1 is flyash impact collector and the system layout thereof of embodiment 1 on flue;
Fig. 2 is flyash impact collector and the system layout thereof of embodiment 2 on flue;
Fig. 3 is flyash impact collector and the system layout thereof of embodiment 3 on flue;
Fig. 4 is the front view of the flyash impact collector of whole embodiment;
Fig. 5 is that the A of flyash impact collector of whole embodiment is to view;
Fig. 6 is that the B of flyash impact collector of whole embodiment is to view;
Fig. 7 is the installation front view of 1 row's flyash impact collector of embodiment 1-3;
Fig. 8 is that 1 row's flyash impact collector is arranged on the flue of embodiment 1-3 C is to view;
Fig. 9 is flyash impact collector and the system layout thereof of embodiment 4-5 on flue;
Figure 10 is flyash impact collector and the system layout thereof of embodiment 6-7 on flue;
Figure 11 is flyash impact collector and the system layout thereof of embodiment 8-9 on flue;
Figure 12 is the installation front view of 2 row's flyash impact collectors of embodiment 4-9;
Figure 13 is that 2 row's flyash impact collectors are arranged on the flue of embodiment 4,6,8 C is to view;
Figure 14 is that 2 row's flyash impact collectors are arranged on the flue of embodiment 5,7,9 C is to view;
Figure 15 is flyash impact collector and the system layout thereof of embodiment 10-11 on flue;
Figure 16 is flyash impact collector and the system layout thereof of embodiment 12-13 on flue;
Figure 17 is flyash impact collector and the system layout thereof of embodiment 14-15 on flue;
Figure 18 is the installation front view of 3 row's flyash impact collectors of embodiment 10-15;
Figure 19 is that 3 row's flyash impact collectors are arranged on embodiment 10,12,14 flues C is to view;
Figure 20 is that 3 row's flyash impact collectors are arranged on embodiment 11,13,15 flues C is to view.
Number in the figure is represented respectively: 1, the air preheater of boiler, and 2, electric cleaner, 3, be connected flue between air preheater and the deduster, 4, the electric cleaner exhaust pass, 5 is flyash impact collector; 6, ashes storehouse, 7, flapper, 8, ash releasing tube, 9, pressure-equalizing pipe, 10, the boiler slag bath, 11, the removing ash pipeline of deduster system; 12, the grey storehouse of special-purpose collection, 13, horizontal flue bottom steel plate.
The present invention is described in further detail below in conjunction with accompanying drawing.
The specific embodiment
A kind of flyash impact collector of the present invention comprises a round steel pipe, this round steel pipe tube wall excision part vertically, and the tube wall of cut-out is less than the radius of round steel pipe, and the tube wall center of remainder has the straight slot that penetrates tube wall.
Flyash impact collector and support device are constituted the flying dust gathering system, be installed at and connect correct position place on the flue between air preheater and the deduster, the basic equipment of flying dust gathering system comprises flyash impact collector, ashes storehouse, removing ash pipeline and spherical flapper etc., wherein, flyash impact collector is a key equipment.At different boilers, this system can increase or reduce other auxiliary equipment on the basis of basic equipment.
Below be the embodiment that the inventor provides.
Embodiment 1:
Referring to Fig. 1, Fig. 4-Fig. 8, present embodiment has 1 row's flyash impact collector 5, be arranged vertically horizontal flue 3 on, the boiler horizontal gas pass bottom width is pressed at the interval of each flyash impact collector 5 and SR is determined, the soot particle of being collected by flyash impact collector 5 enters ashes storehouse 6 by its deadweight, in 6 bottoms, ashes storehouse, soot particle enters boiler slag bath 10 after discharging this system by flapper 7 and ash releasing tube 8.Fig. 7 and Fig. 8 are seen in the layout of flyash impact collector and the installation on the steel plate of flue bottom thereof.
Embodiment 2:
Referring to Fig. 2, Fig. 4-Fig. 8, present embodiment has 1 row's flyash impact collector 5, be arranged vertically horizontal flue 3 on, the boiler horizontal gas pass bottom width is pressed at the interval of each flyash impact collector 5 and SR is determined, the soot particle of being collected by flyash impact collector 5 enters ashes storehouse 6 by its deadweight, in 6 bottoms, ashes storehouse, soot particle is discharged the removing ash pipeline 11 that enters the deduster system after these systems by flapper 7 and ash releasing tube 8.Fig. 7 and Fig. 8 are seen in the layout of flyash impact collector and the installation on the steel plate of flue bottom thereof.
Embodiment 3:
Referring to Fig. 3, Fig. 4-Fig. 8, present embodiment has 1 row's flyash impact collector 5, be arranged vertically horizontal flue 3 on, the boiler horizontal gas pass bottom width is pressed at the interval of each flyash impact collector 5 and SR is determined, the soot particle of being collected by flyash impact collector 5 enters ashes storehouse 6 by its deadweight, in 6 bottoms, ashes storehouse, soot particle enters the grey storehouse 12 of special-purpose collection after discharging this system by flapper 7 and ash releasing tube 8.Fig. 7 and Fig. 8 are seen in the layout of flyash impact collector and the installation on the steel plate of flue bottom thereof.
Embodiment 4:
Referring to Fig. 9, Fig. 4-Fig. 6, Figure 12 and Figure 13, present embodiment has 2 row's flyash impact collectors 5, be arranged vertically horizontal flue 3 on, the boiler horizontal gas pass bottom width is pressed at the interval of each flyash impact collector 5 and SR is determined, the soot particle of being collected by flyash impact collector 5 enters ashes storehouse 6 by its deadweight, in 6 bottoms, ashes storehouse, soot particle enters boiler slag bath 10 after discharging this system by flapper 7 and ash releasing tube 8.Figure 12 and Figure 13 are seen in the layout of flyash impact collector and the installation on the steel plate of flue bottom thereof.
Embodiment 5:
Referring to Fig. 9, Fig. 4-Fig. 6, Figure 12 and Figure 14, present embodiment has 2 row's flyash impact collectors 5, be arranged vertically horizontal flue 3 on, the boiler horizontal gas pass bottom width is pressed at the interval of each flyash impact collector 5 and SR is determined, the soot particle of being collected by flyash impact collector 5 enters ashes storehouse 6 by its deadweight, in 6 bottoms, ashes storehouse, soot particle enters boiler slag bath 10 after discharging this system by flapper 7 and ash releasing tube 8.Figure 12 and Figure 14 are seen in the layout of flyash impact collector and the installation on the steel plate of flue bottom thereof.
Embodiment 6:
Referring to Figure 10, Fig. 4-Fig. 6, Figure 12 and Figure 13, present embodiment has 2 row's flyash impact collectors 5, be arranged vertically horizontal flue 3 on, the boiler horizontal gas pass bottom width is pressed at the interval of each flyash impact collector 5 and SR is determined, the soot particle of being collected by flyash impact collector 5 enters ashes storehouse 6 by its deadweight, in 6 bottoms, ashes storehouse, soot particle is discharged the removing ash pipeline 11 that enters the deduster system after these systems by flapper 7 and ash releasing tube 8.Figure 12 and Figure 13 are seen in the layout of flyash impact collector and the installation on the steel plate of flue bottom thereof.
Embodiment 7:
Referring to Figure 10, Fig. 4-Fig. 6, Figure 12 and Figure 14, present embodiment has 2 row's flyash impact collectors 5, be arranged vertically horizontal flue 3 on, the boiler horizontal gas pass bottom width is pressed at the interval of each flyash impact collector 5 and SR is determined, the soot particle of being collected by flyash impact collector 5 enters ashes storehouse 6 by its deadweight, in 6 bottoms, ashes storehouse, soot particle is discharged the removing ash pipeline 11 that enters the deduster system after these systems by flapper 7 and ash releasing tube 8.Figure 12 and Figure 14 are seen in the layout of flyash impact collector and the installation on the steel plate of flue bottom thereof.
Embodiment 8:
Referring to Figure 11, Fig. 4-Fig. 6, Figure 12 and Figure 13, present embodiment has 2 row's flyash impact collectors 5, be arranged vertically horizontal flue 3 on, the boiler horizontal gas pass bottom width is pressed at the interval of each flyash impact collector 5 and SR is determined, the soot particle of being collected by flyash impact collector 5 enters ashes storehouse 6 by its deadweight, in 6 bottoms, ashes storehouse, soot particle is discharged the special use that enters deduster after these systems by flapper 7 and ash releasing tube 8 and is collected grey storehouse 12.Figure 12 and Figure 13 are seen in the layout of flyash impact collector and the installation on the steel plate of flue bottom thereof.
Embodiment 9:
Referring to Figure 11, Fig. 4-Fig. 6, Figure 12 and Figure 14, present embodiment has 2 row's flyash impact collectors 5, be arranged vertically horizontal flue 3 on, the boiler horizontal gas pass bottom width is pressed at the interval of each flyash impact collector 5 and SR is determined, the soot particle of being collected by flyash impact collector 5 enters ashes storehouse 6 by its deadweight, in 6 bottoms, ashes storehouse, soot particle is discharged the special use that enters deduster after these systems by flapper 7 and ash releasing tube 8 and is collected grey storehouse 12.Figure 12 and Figure 14 are seen in the layout of flyash impact collector and the installation on the steel plate of flue bottom thereof.
Embodiment 10:
Referring to Figure 15, Fig. 4-Fig. 6, Figure 18 and Figure 19, present embodiment has 3 row's flyash impact collectors 5), be arranged vertically horizontal flue 3 on, the boiler horizontal gas pass bottom width is pressed at the interval of each flyash impact collector 5 and SR is determined, the soot particle of being collected by flyash impact collector 5 enters ashes storehouse 6 by its deadweight, in 6 bottoms, ashes storehouse, soot particle enters boiler slag bath 10 after discharging this system by flapper 7 and ash releasing tube 8.Figure 18 and Figure 19 are seen in the layout of flyash impact collector and the installation on the steel plate of flue bottom thereof.
Embodiment 11:
Referring to Figure 15, Fig. 4-Fig. 6, Figure 18 and Figure 20, present embodiment has 3 row's flyash impact collectors 5, be arranged vertically horizontal flue 3 on, the boiler horizontal gas pass bottom width is pressed at the interval of each flyash impact collector 5 and SR is determined, the soot particle of being collected by flyash impact collector 5 enters ashes storehouse 6 by its deadweight, in 6 bottoms, ashes storehouse, soot particle enters boiler slag bath 10 after discharging this system by flapper 7 and ash releasing tube 8.Figure 18 and Figure 20 are seen in the layout of flyash impact collector and the installation on the steel plate of flue bottom thereof.
Embodiment 12:
Referring to Figure 16, Fig. 4-Fig. 6, Figure 18 and Figure 19, present embodiment has 3 row's flyash impact collectors 5, be arranged vertically horizontal flue 3 on, the boiler horizontal gas pass bottom width is pressed at the interval of each flyash impact collector 5 and SR is determined, the soot particle of being collected by flyash impact collector 5 enters ashes storehouse 6 by its deadweight, in 6 bottoms, ashes storehouse, soot particle is discharged the removing ash pipeline 11 that enters the deduster system after these systems by flapper 7 and ash releasing tube 8.Figure 18 and Figure 19 are seen in the layout of flyash impact collector and the installation on the steel plate of flue bottom thereof.
Embodiment 13:
Referring to Figure 16, Fig. 4-Fig. 6, Figure 18 and Figure 20, present embodiment has 3 row's flyash impact collectors 5, be arranged vertically horizontal flue 3 on, the boiler horizontal gas pass bottom width is pressed at the interval of each flyash impact collector 5 and SR is determined, the soot particle of being collected by flyash impact collector 5 enters ashes storehouse 6 by its deadweight, in 6 bottoms, ashes storehouse, soot particle is discharged the removing ash pipeline 11 that enters the deduster system after these systems by flapper 7 and ash releasing tube 8.Figure 18 and Figure 20 are seen in the layout of flyash impact collector and the installation on the steel plate of flue bottom thereof.
Embodiment 14:
Referring to Figure 17, Fig. 4-Fig. 6, Figure 18 and Figure 19, present embodiment has 3 row's flyash impact collectors 5, be arranged vertically horizontal flue 3 on, the boiler horizontal gas pass bottom width is pressed at the interval of each flyash impact collector 5 and SR is determined, the soot particle of being collected by flyash impact collector 5 enters ashes storehouse 6 by its deadweight, in 6 bottoms, ashes storehouse, soot particle is discharged the special use that enters deduster after these systems by flapper 7 and ash releasing tube 8 and is collected grey storehouse 12.Figure 18 and Figure 19 are seen in the layout of flyash impact collector and the installation on the steel plate of flue bottom thereof.
Embodiment 15:
Referring to Figure 17, Fig. 4-Fig. 6, Figure 18 and Figure 20, present embodiment has 3 row's flyash impact collectors 5, be arranged vertically horizontal flue 3 on, the boiler horizontal gas pass bottom width is pressed at the interval of each flyash impact collector 5 and SR is determined, the soot particle of being collected by flyash impact collector 5 enters ashes storehouse 6 by its deadweight, in 6 bottoms, ashes storehouse, soot particle is discharged the special use that enters deduster after these systems by flapper 7 and ash releasing tube 8 and is collected grey storehouse 12.Figure 18 and Figure 20 are seen in the layout of flyash impact collector and the installation on the steel plate of flue bottom thereof.
Operation principle of the present invention is as follows:
The flyash impact collector of the present invention by being installed in boiler flue correct position place be system extremely, adopt the soot particle in the flyash impact collector utilization bump principle collection flue gas, promptly, when striking gatherer on its flow direction of flue gas, its speed drops to 0 in moment, carrying capacity disappears, and soot particle then is deposited to the ashes storehouse by deadweight, and by this gathering system soot particle is discharged.Thereby can reduce the dust concentration of electric cleaner inlet effectively, to satisfy its operation needs, to guarantee its service life and performance driving economy.
Compare with existing equipment, the dust concentration that enters electric cleaner can reduce 10%-30%, and the operating cost of deduster is reduced, and taking up room reduces, very suitable active service boiler improvement and newly constructed boiler.For the active service boiler, it is very easy to construct, and the boiler flue external form is not changed; And do not need to increase power-equipment, do not need to change yet and send induced draught system, be convenient to very much implement.For the then easier enforcement of newly constructed boiler.
Flying dust collecting device of the present invention and system are adapted to the pulverized-coal fired boiler of the various combustion systems of various capacity.
Claims (8)
1. a flyash impact collector is characterized in that, it comprises a round steel pipe, this round steel pipe tube wall excision part vertically, and the tube wall of cut-out is less than the radius of round steel pipe, and the tube wall center of remainder has the straight slot that penetrates tube wall.
2. the described flyash impact collector of claim 1 is used for the application that the pulverized-coal fired boiler flue is collected flying dust.
3. application as claimed in claim 2; it is characterized in that; by installing flyash impact collector additional at the original flue correct position of boiler place; its otch is over against flue gas flow direction; to collect the 5%-10% soot particle in the flue gas; and by its support device with the soot particle collected or enter the original dust removing system of boiler, or enter slag bath, or enter special-purpose ashes storehouse.
4. application as claimed in claim 2 is characterized in that, described flyash impact collector is vertically mounted on the horizontal flue behind the air preheater, and the height of flyash impact collector is 80% of a flue height, and it is at interval by determining according to the flue width.
5. application as claimed in claim 2 is characterized in that, described flyash impact collector has 2 rows, is arranged on the horizontal flue along row.
6. application as claimed in claim 2 is characterized in that, described flyash impact collector has 2 rows, and stagger arrangement is arranged on the horizontal flue.
7. application as claimed in claim 2 is characterized in that, described flyash impact collector has 3 rows, is arranged on the horizontal flue along row.
8. application as claimed in claim 2 is characterized in that, described flyash impact collector is 3 rows, and stagger arrangement is arranged on the horizontal flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710017497 CN101050861A (en) | 2007-03-13 | 2007-03-13 | Flyash impact collector and its use in powder coal boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710017497 CN101050861A (en) | 2007-03-13 | 2007-03-13 | Flyash impact collector and its use in powder coal boiler |
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| Publication Number | Publication Date |
|---|---|
| CN101050861A true CN101050861A (en) | 2007-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710017497 Pending CN101050861A (en) | 2007-03-13 | 2007-03-13 | Flyash impact collector and its use in powder coal boiler |
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| CN (1) | CN101050861A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047667A (en) * | 2013-01-23 | 2013-04-17 | 国核电力规划设计研究院 | Front horizontal flue collapse prevention device of thermal power plant deduster |
| CN107051028A (en) * | 2017-04-17 | 2017-08-18 | 济南大学 | A kind of outer flue gas ash collecting device of flue |
| CN112361364A (en) * | 2020-11-13 | 2021-02-12 | 西安热工研究院有限公司 | Device for removing coarse particle ash by using ash bucket of economizer |
-
2007
- 2007-03-13 CN CN 200710017497 patent/CN101050861A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047667A (en) * | 2013-01-23 | 2013-04-17 | 国核电力规划设计研究院 | Front horizontal flue collapse prevention device of thermal power plant deduster |
| CN103047667B (en) * | 2013-01-23 | 2015-12-23 | 国核电力规划设计研究院 | Front horizontal flue collapse prevention device of thermal power plant deduster |
| CN107051028A (en) * | 2017-04-17 | 2017-08-18 | 济南大学 | A kind of outer flue gas ash collecting device of flue |
| CN112361364A (en) * | 2020-11-13 | 2021-02-12 | 西安热工研究院有限公司 | Device for removing coarse particle ash by using ash bucket of economizer |
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