CN202993178U - Near-wall wind device used for avoiding high temperature corrosion of water cooling wall of waste burning boiler - Google Patents
Near-wall wind device used for avoiding high temperature corrosion of water cooling wall of waste burning boiler Download PDFInfo
- Publication number
- CN202993178U CN202993178U CN 201220647405 CN201220647405U CN202993178U CN 202993178 U CN202993178 U CN 202993178U CN 201220647405 CN201220647405 CN 201220647405 CN 201220647405 U CN201220647405 U CN 201220647405U CN 202993178 U CN202993178 U CN 202993178U
- Authority
- CN
- China
- Prior art keywords
- wall
- adherent wind
- water
- cooling wall
- high temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Abstract
The utility model discloses a near-wall wind device used for avoiding high temperature corrosion of a water cooling wall of a waste burning boiler. The near-wall wind device comprises near-wall air boxes and near-wall air nozzles, wherein one end of each near-wall air box is connected with each near-wall air nozzle, and the other end of each near-wall air box is connected with an air pipe. Each near-wall air nozzle comprises a nozzle fin, a front baffle, a bottom baffle, water cooling wall pipes and water cooling wall fins, wherein the front baffle comprises an inlet baffle, a convergent baffle and an outlet baffle, a blow cleaning narrow slit is formed in the outlet baffle, the water cooling wall fin corresponding to the position between adjacent cooling wall pipes is taken down, and a water wall narrow slit is formed. Each near-wall air nozzle is designed in a convergent structure, smoke is sprayed out along one side of the main smoke direction, the wind direction of near-wall wind is the same to the axial direction of the water cooling wall pipe, an inductive jet area is provided, and the formed near-wall wind is stable, reliable, small in flow resistance, long in delivery distance, and large in protection range. The near-wall wind device used for avoiding the high temperature corrosion of the water cooling wall of the waste burning boiler is free of multi-layer arrangement, small in influence on burning and heat transmission of an original boiler, and capable of effectively solving the problem of the high temperature corrosion of the water cooling wall of the waste burning boiler.
Description
Technical field
The invention belongs to the Utility Boiler Technology field, particularly a kind of adherent wind apparatus be used to preventing the garbage burning boiler water wall high temperature corrosion.
Background technology
Compare with coal-burning boiler, the flue gas in garbage burning boiler has moisture and the high characteristics of fly ash content, and contains HCl and the CO of higher concentration in flue gas, and SO
2, NO
xDeng sour gas, in flying dust, content of beary metal is higher in addition.Abominable inner flue gas of the stove environment makes garbage burning boiler than coal-burning boiler, and the mechanism of water screen tube high temperature corrosion is more complicated, and high temperature corrosion more easily occurs.
After water-cooling wall generation high temperature corrosion, can cause the water-cooling wall wall thickness reduction.According to statistics, general annual wall thickness reduction amount is about 1mm, and when serious, its attenuate speed can reach several times, easily cause paroxysmal water-cooling wall booster event, increase the provisional maintenance of power plant and the workload of overhaul, formed the hidden trouble of safe operation, caused very large economic loss to power plant.This shows, in Refuse Incineration Process, serious water wall high temperature corrosion has become one of key issue of the efficient operation of restriction incinerator, and this has also caused domestic and international each garbage burning boiler operation production business men and researchers' concern and attention gradually.
For preventing the garbage burning boiler water wall high temperature corrosion, generally consider from the following aspect on engineering: reduce the water-cooling wall surface temperature, make it depart from the two-forty humidity province of high temperature corrosion; Destroy reducing atmosphere local in stove; Improve the dust stratification situation on water-cooling wall surface etc.At present domestic more employing protecting metallic surface, perhaps adopt corrosion-resistant high-alloy steel, aluminizing pipe etc. to slow down high temperature corrosion speed, but these are all passive protection method after all, be corroded wearing and tearing to a certain degree afterwards again lay and change, construction costs is higher.Adopt adherent wind method, can form the air film of one deck low temperature on the water-cooling wall surface, effectively reduce the water-cooling wall surface temperature, the oxidizing atmosphere of formation can destroy the required reducing atmosphere of high temperature corrosion.Adherent wind also can purge the water-cooling wall surface effectively, prevents the generation of a large amount of dust stratifications, reduces the possibility of slagging scorification, thereby reduces heavy metallic salt in the deposition of wall.Consider from economy, adherent wind apparatus is simple in structure, invest less, successful, income and output investment ratio are high; Consider from technological layer, adherent wind technology maturation is reliable, and the ratio that adherent wind air quantity accounts for total blast volume is little, and it is regional that device only is arranged in easy generation high temperature corrosion, less to the burning in stove and Heat Transfer Influence.Weigh the advantages and disadvantages, adopt adherent wind apparatus to prevent that water wall high temperature corrosion has good feasibility.
Yet adherent wind apparatus is the attachment device beyond former design boiler after all, and the burning of boiler internal, the impact of heat transfer and flow are can hardly be avoided.Optimal design goes out a kind of more efficient adherent wind apparatus, can reduce to the full extent its impact on boiler efficiency, and reach the effect of the high temperature corrosion that prevents water-cooling wall, seems particularly important in today of increasingly paying attention to profit from power plant and safety.
Summary of the invention
The objective of the invention is in order to solve the problem of garbage burning boiler water wall high temperature corrosion, and the impact of minimizing on former boiler operatiopn as far as possible, a kind of adherent wind apparatus be used to preventing the garbage burning boiler water wall high temperature corrosion is provided, its have investment little, simple in structure, move efficient advantage.
The technical scheme that the present invention solves the prior art problem is:
A kind of adherent wind apparatus be used to preventing the garbage burning boiler water wall high temperature corrosion, comprise airduct, secondary air duct, described adherent wind apparatus comprises adherent wind bellows, adherent wind nozzle, one end of described adherent wind bellows is connected with adherent wind nozzle, and the other end of described adherent wind bellows is connected with airduct;
Described adherent wind nozzle comprises nozzle fin, anterior baffle plate and bottom baffle, water screen tube and water-cooling wall fin; Anterior baffle plate is made of inlet baffle, convergent baffle plate, outlet damper, offers the purging slit on outlet damper; Take off the water-cooling wall fin between corresponding adjacent two water screen tubes, form the water-cooling wall slit.In described airduct, flowmeter is set.
The total length of the anterior baffle plate of described adherent wind nozzle is the twice of the length of water-cooling wall slit, and wherein the length of inlet baffle is identical with the length of water-cooling wall slit; Convergent baffle plate, outlet damper, nozzle fin, corresponding adjacent two water screen tubes and water-cooling wall fin surround the space that forms, and are the injection district of adherent wind.
Described adherent wind apparatus also comprises airduct, secondary air duct, and airduct is connected with secondary air duct, is provided with air door between airduct and secondary air duct.
The present invention compared with prior art, beneficial effect is:
1. adherent wind apparatus of the present invention is arranged in the bottom position in the interior high temperature corrosion of garbage burning boiler district, adherent wind nozzle bottom seals by bottom baffle, only go out in mobile direction one side spray of main flue gas in stove, flow resistance is little, can obtain farther fed distance.
2. the anterior baffle plate of adherent wind nozzle adopts the convergent design, is used for improving the spouting velocity of adherent wind, increases adherent wind along the fed distance of water screen tube wall.
3. convergent baffle plate, outlet damper, nozzle fin, corresponding adjacent two water screen tubes and the water-cooling wall fin injection district that forms helps the stable formation of adherent wind, and guarantees its effect.
4. adherent wind wind direction is axially identical with water screen tube, carries along the groove of adjacent two water screen tubes and the formation of water-cooling wall fin, further reduces its flow resistance, and originally adherent wind apparatus need not multilayer be arranged, system architecture is simple, and protective range is large.
5. the adherent elegance of adherent wind nozzle ejection sprays with the mode of cold air jet, be conducive to reduce on the one hand the water screen tube surface temperature, on the one hand adherent wind jet can purge the water screen tube surface on flow process, prevent that flying dust from the deposition on water screen tube surface, preventing the wall slagging scorification to a certain extent.
The technology of the present invention means are simple and easy to do, invest littlely, and income is obvious, and the adherent wind flow resistance of formation is little, and fed distance is far away, and economical operation is efficient, effectively prevents the generation of water wall high temperature corrosion.
Description of drawings
Fig. 1 is the application example schematic diagram of the present invention and burning boiler.
Fig. 2 is A-A sectional structure schematic diagram in Fig. 1.
Fig. 3 is the plan structure schematic diagram of adherent wind nozzle 4 of the present invention.
Fig. 4 is B-B sectional structure schematic diagram in Fig. 3.
The specific embodiment
The below is described in further detail the specific embodiment of the present invention, but embodiments of the present invention are not limited to this.
As shown in Figure 1, the present invention is used for preventing the adherent wind apparatus of garbage burning boiler water wall high temperature corrosion, comprises airduct 9, secondary air duct 10;
As shown in Figure 2, described adherent wind apparatus comprises adherent wind bellows 2, adherent wind nozzle 4, and an end of described adherent wind bellows 2 is connected with adherent wind nozzle 4, and the other end of described adherent wind bellows 2 is connected with airduct 9;
As shown in Figure 3, Figure 4, described adherent wind nozzle 4 comprises nozzle fin 4-1, anterior baffle plate 4-2, bottom baffle 4-3, water screen tube 6, water-cooling wall fin 7; Anterior baffle plate 4-2 is made of inlet baffle 4-2-1, convergent baffle plate 4-2-2, outlet damper 4-2-3, offers to purge slit 4-2-4 on outlet damper 4-2-3; Take off the water-cooling wall fin 7 of 6 of corresponding adjacent two water screen tubes, form water-cooling wall slit 3.The air of being supplied with by adherent wind bellows 2 enters in the adherent wind nozzle 4 of unit by each water-cooling wall slit 3.
As shown in Figure 3, Figure 4, the total length of the anterior baffle plate 4-2 of described adherent wind nozzle 4 is the twice of the length of water-cooling wall slit 3, and wherein the length of inlet baffle 4-2-1 is identical with the length of water-cooling wall slit 3; Convergent baffle plate 4-2-2, outlet damper 4-2-3, nozzle fin 4-1, corresponding adjacent two water screen tubes 6 and water-cooling wall fin 7 surround the space that forms, and are the injection district of adherent wind, help the stable formation of adherent wind, and guarantee its effect.
As shown in Figure 2, described adherent wind apparatus also comprises airduct 9, secondary air duct 10, and airduct 9 is connected with secondary air duct 10, is provided with air door 13 between airduct 9 and secondary air duct 10.
The interior flowmeter (not shown) that arranges of described airduct 9.Monitor the air quantity that enters in adherent wind bellows 2 by flowmeter, guarantee that simultaneously total adherent wind air quantity is less than 5% of total blast volume.
Adherent wind apparatus of the present invention is arranged on the wall of burner hearth, and at the online flue gas analysis device 8 of adherent wind apparatus above and below wall-mount, online flue gas analysis device 8 evenly distributes along burner hearth 1 width.Online flue gas analysis device 8 is used for the flue gas composition content of the upper and lower of the adherent wind apparatus of Real-Time Monitoring, emphasis monitoring HCl, CO and O
2Concentration is to assist to prevent the appearance of corrosive gas excessive concentration and local reducing atmosphere.
As shown in Figure 2, the monitoring result of flowmeter (not shown) and online flue gas analysis device 8 is by the control of air door 13 realizations to adherent wind air quantity.As the interior local HCl of burner hearth 1 and CO excessive concentration, perhaps O
2When concentration is too low, in the situation that adherent wind total blast volume is no more than total blast volume 5%, can increase in right amount adherent wind air quantity.
As shown in Figure 3, Figure 4, the convergent baffle plate 4-2-2 of anterior baffle plate 4-2, the spouting velocity for improving adherent wind increases adherent wind along the fed distance of water screen tube 6 walls.
As shown in Figure 4, the setting of purging slit 4-2-4 is to be mainly in order to prevent that flying dust from depositing on convergent baffle plate 4-2-2.During operation, the interior a small amount of air of adherent wind nozzle 4 purges the outer surface of convergent baffle plate 4-2-2 by purging slit 4-2-4, also it is played the cooling protection effect simultaneously.
As shown in Figure 2.The bottom of adherent wind nozzle 4 is by bottom baffle 4-3 sealing, and adherent wind only goes out in direction one side spray that flows along the interior main flue gas of burner hearth 1, and flow resistance is little, guarantees that adherent wind has larger fed distance.
As shown in Figure 3, adherent wind wind direction is axially identical with water screen tube 6, carries along the groove of adjacent two water screen tubes 6 and 7 formation of water-cooling wall fin, further reduces flow resistance.Adherent wind apparatus need not multilayer arranges, system architecture is simple, and protective range is large.Adherent elegance sprays with the mode of cold air jet, be conducive to reduce on the one hand water screen tube 6 surface temperatures, adherent wind jet can purge water screen tube 6 surfaces on the one hand, prevent flying dust in the deposition on water screen tube 6 surfaces, prevent to a certain extent the generation of the water screen tube 6 wall slagging scorification in adherent wind effective scope.
Adherent wind apparatus only is arranged in the bottom position in the comparatively serious zone such as (being that the furnace outlet lower boundary is to its lower number formulary rice scope) high temperature corrosion on front wall, ceiling and the rear wall of waste heat boiler the first flue afterbody.Burner hearth 1 cross section is the oblong-shaped of 1:2, and temperature and smoke distribution situation make the situation of both walls generation high temperature corrosion less.In actual motion, can as required, arrange adherent wind apparatus in the bottom, zone that other high temperature corrosion is serious.
Just can realize preferably the present invention as mentioned above.
Embodiments of the present invention are not restricted to the described embodiments; other are any does not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitute, combination, simplify; all should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (4)
1. adherent wind apparatus that is used for preventing the garbage burning boiler water wall high temperature corrosion, it is characterized in that: adherent wind apparatus comprises adherent wind bellows, adherent wind nozzle, one end of adherent wind bellows is connected with adherent wind nozzle, and the other end of adherent wind bellows is connected with airduct;
Described adherent wind nozzle comprises nozzle fin, anterior baffle plate and bottom baffle, water screen tube and water-cooling wall fin; Anterior baffle plate is made of inlet baffle, convergent baffle plate, outlet damper, offers the purging slit on outlet damper; Take off the water-cooling wall fin between corresponding adjacent two water screen tubes, form the water-cooling wall slit.
2. the adherent wind apparatus be used to preventing the garbage burning boiler water wall high temperature corrosion according to claim 1, it is characterized in that, the total length of the anterior baffle plate of described adherent wind nozzle is the twice of the length of water-cooling wall slit, and wherein the length of inlet baffle is identical with the length of water-cooling wall slit; Convergent baffle plate, outlet damper, nozzle fin, corresponding adjacent two water screen tubes and water-cooling wall fin surround the space that forms, and are the injection district of adherent wind.
3. the adherent wind apparatus be used to preventing the garbage burning boiler water wall high temperature corrosion according to claim 1, it is characterized in that, adherent wind apparatus also comprises airduct, secondary air duct, and airduct is connected with secondary air duct, is provided with air door between airduct and secondary air duct.
4. the adherent wind apparatus be used to preventing the garbage burning boiler water wall high temperature corrosion according to claim 2, is characterized in that, in described airduct, flowmeter is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220647405 CN202993178U (en) | 2012-11-29 | 2012-11-29 | Near-wall wind device used for avoiding high temperature corrosion of water cooling wall of waste burning boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220647405 CN202993178U (en) | 2012-11-29 | 2012-11-29 | Near-wall wind device used for avoiding high temperature corrosion of water cooling wall of waste burning boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202993178U true CN202993178U (en) | 2013-06-12 |
Family
ID=48564355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220647405 Withdrawn - After Issue CN202993178U (en) | 2012-11-29 | 2012-11-29 | Near-wall wind device used for avoiding high temperature corrosion of water cooling wall of waste burning boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202993178U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980176A (en) * | 2012-11-29 | 2013-03-20 | 华南理工大学 | Adherence air device for preventing high-temperature corrosion of water cooling wall of refuse burning boiler |
| CN103438437A (en) * | 2013-07-30 | 2013-12-11 | 国电科学技术研究院 | Adherence air system of front and back wall opposed firing boiler |
| CN107327837A (en) * | 2017-07-24 | 2017-11-07 | 无锡华光锅炉股份有限公司 | The easy coking area of main burner solves coking structure |
| CN108730969A (en) * | 2018-07-24 | 2018-11-02 | 西安热工研究院有限公司 | A kind of coal powder direct supplying burner structure with adjustable adherent wind |
-
2012
- 2012-11-29 CN CN 201220647405 patent/CN202993178U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980176A (en) * | 2012-11-29 | 2013-03-20 | 华南理工大学 | Adherence air device for preventing high-temperature corrosion of water cooling wall of refuse burning boiler |
| CN103438437A (en) * | 2013-07-30 | 2013-12-11 | 国电科学技术研究院 | Adherence air system of front and back wall opposed firing boiler |
| CN107327837A (en) * | 2017-07-24 | 2017-11-07 | 无锡华光锅炉股份有限公司 | The easy coking area of main burner solves coking structure |
| CN108730969A (en) * | 2018-07-24 | 2018-11-02 | 西安热工研究院有限公司 | A kind of coal powder direct supplying burner structure with adjustable adherent wind |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102980176B (en) | Adherence air device for preventing high-temperature corrosion of water cooling wall of refuse burning boiler | |
| CN101706110A (en) | Near-wall air device for preventing high-temperature corrosion of water-cooled wall of power station boiler | |
| CN103047659B (en) | Burning process and burning boiler for processing high-density saliferous organic wastewater | |
| CN202993178U (en) | Near-wall wind device used for avoiding high temperature corrosion of water cooling wall of waste burning boiler | |
| CN107883388A (en) | A kind of soot blower system and ash-blowing method for π type boiler furnace arch, furnace noses | |
| CN105605543B (en) | A kind of high dust-laden highly corrosive waste heat boiler of metallurgy industry high temperature | |
| CN101815902A (en) | MSW fuel vapour generator with water-evaporating furnace tube panel | |
| CN206861543U (en) | High-temperature flue gas waste heat recovery and the two segments combined device of chilling | |
| CN2786440Y (en) | Boiler with wall type arranged burner capable of preventing water-cooled wall from high temperature corrosion and slag bonding | |
| CN102966959B (en) | Wall-attached air system for preventing high temperature corrosion of water cooled wall of garbage incinerator | |
| CN201688416U (en) | Ash cleaning system for heated surface at the tail of garbage incinerator | |
| CN110793039A (en) | Waste incineration exhaust-heat boiler flue gas reflux system | |
| CN207907273U (en) | It is a kind of prevent coal-burning boiler denitration be transformed after tail portion dust deposit in flue device | |
| EP2381169A2 (en) | Boiler equipped with a superheater | |
| CN212057305U (en) | Waste incineration exhaust-heat boiler flue gas reflux system | |
| CN206531074U (en) | Refuse burning system waste heat boiler soot blowing mechanism | |
| CN102644930B (en) | Deashing device and method for waste incineration boiler and biomass boiler | |
| CN212178851U (en) | Adherence wind bellows that flute cast was automatic to be swept | |
| CN212299011U (en) | Wear-resistant and corrosion-resistant wall-attached airflow system for water cooled wall of garbage incinerator | |
| CN205919305U (en) | High cloud of dust gas disposal of smoke treatment device and rotary hearth furnace high temperature and waste heat utilization system | |
| CN213396606U (en) | Membrane wall combined type waste heat recovery device with independently replaceable heat pipe | |
| CN212869746U (en) | Wall-attached air system for preventing water-cooled wall of cold ash bucket of coal-fired boiler from corroding | |
| CN204513422U (en) | Steam blast cap soot blower system | |
| CN210069831U (en) | Wall-attached air device for preventing abrasion and high-temperature corrosion of boiler water-cooled wall | |
| CN209960522U (en) | Long-nozzle shock wave soot blower with cooling and soot deposition preventing functions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130612 Effective date of abandoning: 20150701 |
|
| RGAV | Abandon patent right to avoid regrant |