CN101285584A - Method for preventing water and dust accumulation in thermal explosion pulse soot blower - Google Patents
Method for preventing water and dust accumulation in thermal explosion pulse soot blower Download PDFInfo
- Publication number
- CN101285584A CN101285584A CNA2008101063341A CN200810106334A CN101285584A CN 101285584 A CN101285584 A CN 101285584A CN A2008101063341 A CNA2008101063341 A CN A2008101063341A CN 200810106334 A CN200810106334 A CN 200810106334A CN 101285584 A CN101285584 A CN 101285584A
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- Prior art keywords
- pulse
- soot blower
- heat
- sootblower
- conduit
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- 239000000428 dust Substances 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 238000004880 explosion Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000004071 soot Substances 0.000 title abstract description 17
- 238000009825 accumulation Methods 0.000 title abstract 3
- 238000007664 blowing Methods 0.000 claims abstract description 15
- 230000008021 deposition Effects 0.000 claims description 6
- 230000002045 lasting effect Effects 0.000 claims description 5
- 238000013517 stratification Methods 0.000 description 22
- 239000000446 fuel Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 6
- 239000008246 gaseous mixture Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000005587 bubbling Effects 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of thermal explosion pulse soot blowing, and particularly relates to a method for preventing water and soot accumulation in a thermal explosion pulse soot blower. The invention has the advantages of effectively preventing water and dust accumulation in the pulse soot blower, fundamentally prolonging the service life of the pulse soot blower to a large extent and greatly improving the reliability and the safety of the pulse soot blower to a large extent.
Description
Technical field
The invention belongs to the impulse soot blowing technical field, be specifically related to prevent the method for inner water log or dust deposition of heat explosion pulse ash-blowing device.
Background technology
Heat exploding pulse sootblower is called for short pulse soot blower, have another name called the shock-wave ash blowing device, the shock wave soot blower, weak quick-fried soot blower, blast wave blower, the detonation wave soot blower, pinking pulse soot blower etc., invent by the people of the former Soviet Union the earliest, imported China in 1988 into, develop by " gas big gun ", its basic principle of blowing ash is: the gaseous mixture that makes fuel and oxidant gas with impulse generator that flue is communicated with in light a fire and explode, utilize " the alternation punching press is inhaled and drawn effect " of the compression shock ripple of blast generation, " the purging effect " of " physics effect of micro-explosion " and high-speed pulse jet blown down the various dust stratifications on boiler heating surface and the flue wall, has vibration simultaneously concurrently, three kinds of deashing effects of sound wave and high temperature pyrolysis.Impulse generator claims shock wave generator, surge generator, blast wave generator, detonation wave generator, blast jar, Impulsive tank etc. again; Impulse generator can directly be communicated with flue, also can be communicated with flue by pulse conduit, and pulse conduit claims transmitting tube, jet pipe etc. again.Because belonging to dry type blows ash, and blow that grey intensity height, no dead angle, sphere of action are big, good energy-conserving effect, equipment dependability height, to blow grey expense cheap, has impayable superiority with traditional steam soot blowing ratio, not only be used for heated surface at the end of boiler at large and replaced traditional steam soot blowing, and begin to be used to blow down industrial furnace interior dust stratification and slagging scorification, even also attempted being used for other occasions such as auxiliary deashing of electrostatic precipitator.
In mixed gas pipeline road that is connected in the impulse generator of heat exploding pulse sootblower, with impulse generator and the blender even outside the stove of pulse conduit in the section; usually can produce a certain amount of acid ponding and the dust stratification that hardens; and the most serious in the winter time, heat exploding pulse sootblower is constructed as follows serious harm:
1. the inwall of paired pulses generator, pulse conduit, blender, mixed pipe line etc. causes heavy corrosion, reduces the service life of these parts significantly, and reduces the functional reliability of heat exploding pulse sootblower significantly.
2. can stop up gaseous mixture pipeline, blender etc. when dust stratification is serious, cause the heat exploding pulse sootblower can't operate as normal, produce by " miso-fire ", bring out polytype " tempering " fault.
3. when blowing grey operation, the high velocity air that the part dust stratification is produced by exploding drives and washes away the inwall of gaseous mixture pipeline, blender, impulse generator, pulse conduit at a high speed, it is caused heavy wear, further reduce the functional reliability of its service life and heat exploding pulse sootblower.
4. the high speed erosive wear of the corrosion of acid ponding and dust stratification is mutually promoted, form vicious circle, strengthened the infringement of paired pulses generator, pulse conduit, blender, mixed pipe line etc. more, time one is of a specified duration, very easily burst, make heat exploding pulse sootblower become " not timing unfixed point bomb " at certain weakness.
5. the part dust stratification sprays from pulse conduit with high-speed jet when ignition deflagrating of hot, and heating surface is caused more serious high speed erosive wear, very easily causes the generation of security incidents such as " boosters " in the course of time.
6. at final stage air preheater place, because the cigarette temperature is lower, be difficult to be evaporated rapidly from the acid ponding of impulse generator and pulse conduit backflow by flue gas, below spout, cause the dust stratification that hardens, not only stop up smoke pipe, and this dust stratification that tentatively hardens very easily " exploded " when blowing grey operation and becomes fragment to be scattered everywhere, causes increasing smoke pipe to stop up, and finally causes serious " canopy ash ".
At this ponding fouling phenomenon of heat exploding pulse sootblower and the serious harm that causes thereof, in prior art, owing to do not find its real, chief reason, the technical method that does not also prevent at present only discharges water and the technical method of block clearing.
Summary of the invention
The objective of the invention is to: the problems referred to above at present heat exploding pulse sootblower exists provide a kind of method that prevents inner water log or dust deposition of heat explosion pulse ash-blowing device.
The solution of the present invention is: preventing the method for inner water log or dust deposition of heat explosion pulse ash-blowing device, mainly is to stop to blow between grey operational period at heat exploding pulse sootblower, continues bubbling air in heat exploding pulse sootblower.
The reason that produces the acid ponding and the dust stratification that hardens in the heat exploding pulse sootblower is: impulse generator and the mixed gas pipeline road that is connected with impulse generator, blenders etc. all are installed in outside the stove, they all are connected with flue by pulse conduit, because the flue-gas temperature in the stove is much higher than the outer environment temperature of stove, do not blow between grey operational period at soot blower, the flue gas that temperature is higher thereby density is less in the stove will with the outer section of the stove of pulse conduit in, in the impulse generator, even with mixed gas pipeline that impulse generator links to each other in, free convection takes place between the gas that temperature is relatively low thereby density is bigger in the blender, because flue gas contains water vapour, section outside entering the stove of pulse conduit, impulse generator, even the mixed gas pipeline that links to each other with impulse generator, in the blender by will be after the environment cools in the inwall dewfall, because this free convection is endlessly, this dewfall also is endlessly, thus outside the stove of pulse conduit the section in, in the impulse generator, even with mixed gas pipeline that impulse generator links to each other in, form ponding in the blender.Owing to not only contain water vapour in the flue gas, and generally also contain very easily water-soluble SO
2, SO
3, this ponding generally all has stronger acidity, can produce more serious corrosion to the soot blower inwall; Owing to not only contain water vapour, SO in the flue gas
2And SO
3, but also containing more flying dust, these flying dusts can stick to and form the acidity dust stratification that hardens on the inwall of dewfall.
Stop to blow between grey operational period at heat exploding pulse sootblower, continue bubbling air in heat exploding pulse sootblower, can make to keep a lasting inlet air flow in the jet pipe, thereby stop the generation of above-mentioned free convection, also just avoid producing in the heat exploding pulse sootblower acid ponding and dust stratification.
Major advantage of the present invention is: can fundamentally eliminate long-pending sour dew and the long-pending grey phenomenon that hardens in the heat exploding pulse sootblower, the life-span, functional reliability and the security that have improved heat exploding pulse sootblower significantly.
In order to obtain anti-reliably ponding dust stratification effect, the flow velocity of lasting air stream in impulse generator outlet or pulse conduit that is fed is more preferably greater than equaling 0.01 meter per second.
Description of drawings
Below in conjunction with drawings and Examples the present invention is provided further instruction.
Fig. 1 is the schematic diagram of the embodiment of the invention 1;
Fig. 2 is the schematic diagram of the embodiment of the invention 2;
Fig. 3 is the schematic diagram of the embodiment of the invention 3.
1. impulse generators among the figure, 2. pulse conduit is 3. prevented ponding dust stratification pipeline, 4. electrical ball valve, 5. air switching valve, 6. fuel cock valve, 7. blender, 8. gaseous mixture pipeline, 9. fuel conduit, 10. air pipe line.
The specific embodiment
Embodiment 1:
As shown in Figure 1, the heat exploding pulse sootblower of present embodiment mainly comprises impulse generator 1 and pulse conduit 2, the internal diameter of the outlet diameter of pulse impulse generator 1 and pulse conduit 2 is all φ 147m, on the inlet ductwork of impulse generator 1, be connected to special anti-ponding dust stratification pipeline 3, do not blowing between grey operational period, in impulse generator 1, feed the air stream that continues by anti-ponding dust stratification pipeline 3, flow is 1.7 cubic metres/hour, thereby forms the lasting inlet air flow that flow velocity is 0.01 meter per second in pulse conduit 2.
Embodiment 2:
As shown in Figure 2, the heat exploding pulse sootblower of present embodiment and embodiment 1 are identical, on pulse conduit, be connected to special anti-ponding dust stratification pipeline 3, do not blow between grey operational period at heat exploding pulse sootblower, feeding flow by anti-ponding dust stratification pipeline 3 in pulse conduit is 3.4 cubic metres/hour air stream, thereby forms the lasting inlet air flow that flow velocity is 0.2 meter per second in pulse conduit.
Embodiment 3:
As shown in Figure 3, the heat exploding pulse sootblower of present embodiment mainly comprises impulse generator 1, pulse conduit 2, anti-ponding dust stratification pipeline 3, electrical ball valve 4, air switching valve 5, fuel cock valve 6, blender 7, gaseous mixture pipeline 8, fuel conduit 9 and air pipe line 10, wherein the outlet of blender 7 is to be connected by the import of gaseous mixture pipeline 8 with impulse generator 1, fuel conduit 9 is to be connected with air intlet with the fuel inlet of blender 7 respectively with air pipe line 10, also is serially connected with fuel cock valve 6 and air switching valve 5 on fuel conduit 9 and air pipe line 10 respectively; Insert special anti-ponding dust stratification pipeline 3 at air switching valve 5 two ends, and electrical ball valve 4 of serial connection on anti-ponding dust stratification pipeline 3, do not blow between grey operational period at heat exploding pulse sootblower, fuel cock valve 6 and air switching valve 5 all are in closed condition, make electrical ball valve 4 be in opening, just can in heat exploding pulse sootblower, feed the air stream that continues,, make the flow velocity in the pulse conduit 2 reach 0.05 meter per second by adjusting the drag characteristic of anti-ponding dust stratification pipeline 3.
Claims (2)
1. prevent the method for inner water log or dust deposition of heat explosion pulse ash-blowing device, it is characterized in that: stop to blow between grey operational period at heat exploding pulse sootblower, in heat exploding pulse sootblower, feed the air stream that continues.
2. the method that prevents inner water log or dust deposition of heat explosion pulse ash-blowing device according to claim 1 is characterized in that: the lasting air stream that is fed at the outlet of impulse generator (1) or the flow velocity in the pulse conduit (2) more than or equal to 0.01 meter per second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101063341A CN101285584A (en) | 2008-05-13 | 2008-05-13 | Method for preventing water and dust accumulation in thermal explosion pulse soot blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101063341A CN101285584A (en) | 2008-05-13 | 2008-05-13 | Method for preventing water and dust accumulation in thermal explosion pulse soot blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101285584A true CN101285584A (en) | 2008-10-15 |
Family
ID=40057917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101063341A Pending CN101285584A (en) | 2008-05-13 | 2008-05-13 | Method for preventing water and dust accumulation in thermal explosion pulse soot blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101285584A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183034A (en) * | 2011-03-03 | 2011-09-14 | 北京凡元兴科技有限公司 | Operating method of gas pulse soot blower for effectively collecting soot blowing residue |
| CN102410526A (en) * | 2011-12-15 | 2012-04-11 | 杭州新世纪能源环保工程股份有限公司 | Corrosion-protection type fuel pulse generation device of constant-positive-pressure nozzle |
-
2008
- 2008-05-13 CN CNA2008101063341A patent/CN101285584A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183034A (en) * | 2011-03-03 | 2011-09-14 | 北京凡元兴科技有限公司 | Operating method of gas pulse soot blower for effectively collecting soot blowing residue |
| CN102183034B (en) * | 2011-03-03 | 2012-09-05 | 北京凡元兴科技有限公司 | Operating method of gas pulse soot blower for effectively collecting soot blowing residue |
| CN102410526A (en) * | 2011-12-15 | 2012-04-11 | 杭州新世纪能源环保工程股份有限公司 | Corrosion-protection type fuel pulse generation device of constant-positive-pressure nozzle |
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Addressee: Cao Yidong Document name: Notification of before Expiration of Request of Examination as to Substance |
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Open date: 20081015 |