CN202993228U - Wall-attaching air system preventing high temperature corrosion of water wall of garbage incinerator - Google Patents
Wall-attaching air system preventing high temperature corrosion of water wall of garbage incinerator Download PDFInfo
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- CN202993228U CN202993228U CN 201220647375 CN201220647375U CN202993228U CN 202993228 U CN202993228 U CN 202993228U CN 201220647375 CN201220647375 CN 201220647375 CN 201220647375 U CN201220647375 U CN 201220647375U CN 202993228 U CN202993228 U CN 202993228U
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Abstract
The utility model discloses a wall-attaching air system preventing high temperature corrosion of a water wall of a garbage incinerator. A wall-attaching air supply device comprises a chimney, an ash pump, a controllable heat exchanger, an air pipe and an air channel, wherein the chimney, the ash pump, the controllable heat exchanger, the air pipe and the air channel are connected in sequence through pipelines. Necking devices are wall-attaching air bellows which are symmetrically arranged on the inner walls of a front wall and a rear wall of a first smoke channel. Corresponding surfaces of the two air bellows are streamline-shaped curved surfaces. Smooth transition is achieved between one streamline-shaped curved surface and the wall surface of the front wall and between the other streamline-shaped curved surface and the wall surface of the rear wall. The air outlet angle of an air outlet of each wall-attaching air bellow is 170-175 degrees relative to the front wall and the rear wall. An air current layer is formed by the wind blown out from the air outlet along the inner wall surfaces of the front wall and the rear wall and rises along the water wall, and then oxidizing atmosphere is guaranteed, temperature of areas near the water wall is relatively decreased, and high-temperature corrosion is prevented. Abrasion to the water wall of particles which are not burnt can be relieved due to the streamline-shaped curved surfaces of the wall-attaching air bellows and the particles which are not burnt are prevented from burning near the water wall.
Description
Technical field
The utility model relates to the incinerator water wall high temperature corrosion equipment that prevents, particularly a kind of adherent wind system that prevents the incinerator water wall high temperature corrosion.
Background technology
It is day by day perfect that energy extraction, new and high technology are utilized, the development of World Economics, indicating the progress that the mankind are scientific and technological, economic, but then, producing the quantity of discarded object, domestic waste also is on the increase, become a stationary source in people's production, life, therefore, we have to pay attention to the validation processing of municipal refuse.Current, conventional treating method for urban garbage has three kinds: landfill method, composting process and burning method.Compare with front two kinds of methods, burning method with its to the higher degree of rubbish innoxious, subtract appearanceization and resource, at home and abroad be widely used.
constantly perfect along with the waste incineration and generating electricity technology, the continuous increase of installed capacity and people's environmental protection, improving constantly of health perception, country and society be the safety of pay attention to day by day waste incineration also, efficient and environmental protection standard, also have higher requirement for the waste incineration project, wherein water-cooling wall booster problem has caused people's great attention, refuse-burning plant water-cooling wall booster is to unit equipment, power plant and national wealth, personal safety and social response have a strong impact on, and the inducement of water-cooling wall booster mainly comprises ash cutting and high temperature corrosion, and compare with ash cutting, high temperature corrosion is more serious on water-cooling wall attenuate and even booster impact because of its outstanding chain reaction, so prevent that water wall high temperature corrosion from being the major measure that prevents the water-cooling wall booster.
In built waste incineration furnace project, air stratification is supplied with technology and is enlarged the coverage of combustion air by reasonable wind distribution, form stronger flow-disturbing, improve uniformity and the gas residence time of burning, adequacy, stability and the efficiency of combustion of waste incineration have been improved on the one hand, ensure the pollutant handling rate of waste incineration, also effectively prevent on the other hand the high temperature corrosion of water-cooling wall.Because the high temperature corrosion of water-cooling wall depends primarily on smoke components, temperature and atmosphere near water-cooling wall, and these factors all have substantial connection with combustion position.
With regard to the built incinerator of going into operation of China, the major measure of solution high temperature corrosion has the anti-corrosion material method of laying, employing corrosion resisting alloy, aluminising tubing and feeds the method for adherent wind.Yet in conjunction with the present present situation of the existing incinerator of China, said method is still not ideal enough, reason be its method that adopts all for the purpose of slowing down high temperature corrosion as far as possible, but the time one is long, the problem of high temperature corrosion still exists.
Summary of the invention
The purpose of this utility model is to be to solve the problem that prior art exists, a kind of adherent wind system that prevents the incinerator water wall high temperature corrosion simple in structure is provided, efficiently solves the potential safety hazard that causes the water-cooling wall booster because of water wall high temperature corrosion.
The technical scheme that the utility model solves the prior art problem is:
A kind of adherent wind system that prevents the incinerator water wall high temperature corrosion comprises adherent wind air-supply arrangement and constriction device;
Adherent wind air-supply arrangement comprises chimney, ash pump, controlled thermal interchanger, airduct and air channel that pipeline successively connects, is provided with the on-line temperature monitoring instrument on the pipeline between ash pump and controlled thermal interchanger, is provided with flowmeter and adjusting air valve on the air channel;
The constriction device is to be symmetricly set on the front wall of the first flue and the adherent bellows on rear inner wall, and the corresponding surface of these two adherent bellows is the streamlined curved surface, the wall rounding off of the lower surface camber camber line of streamlined curved surface and front wall, rear wall; Adherent bellows are provided with air inlet and air outlet, and air inlet is communicated with the air channel, and the air outlet angle of air outlet is 170 °～175 ° with respect to the wall angle of front wall and rear wall, and the wind that air outlet blows out forms one deck airflow layer along the internal face of front wall and rear wall.
Be set side by side with two deflectors in the air outlet of adherent bellows, every deflector is divided into three section faces, and wherein, the first two section face is the plane, and a rear section face is curved surface.
Angle between deflector the first two section face is 160 °～175 °.
On the inwall of front wall and rear wall, adherent bellows air outlet above be provided with online detection of exhaust gas compositions instrument.
The contact length of adherent bellows and front wall and rear wall is 0.8 meter～1.5 meters.
The utility model compared with prior art, beneficial effect is:
The constriction device is to be symmetricly set on the front wall of the first flue and the adherent bellows on rear inner wall, and the corresponding surface of these two adherent bellows is the streamlined curved surface, the wall rounding off of the lower surface camber camber line of streamlined curved surface and front wall, rear wall.this structure, make the flue gas circulation area in the first flue constantly reduce, flue gas accelerates to concentrate in the middle of the first flue, after above flue gas arrives adherent bellows, the flue gas circulation area constantly increases again, so, the flue gas on front-back wall both sides is along the continuous soaring water-cooling wall direction of pouring into of the profile of adherent bellows, at this moment, due to effect of inertia, in the first flue gas of concentrating in the middle of flue do not fire particle also rest in the middle of or be later than gas gas-phase objects in flue gas to the speed of both sides diffusion, still wrapped up in by gas gas-phase objects, so both can alleviate and not fire particle to the wearing and tearing of water-cooling wall, can prevent from again not firing particle in the place's burning of nearly wall.
In chimney, the part smoke evacuation enters adherent bellows through operations such as ash pump pressurization, controlled thermal interchangers, and the air outlet angle of adherent bellows air outlet is 170 °～175 ° with respect to the wall angle of front wall and rear wall.The adherent wind of being sent by adherent bellows air outlet; form one deck airflow layer or air conservation film between high-temperature flue gas in water-cooling wall (comprising front-back wall) and the first flue; namely utilize the excess oxygen in chimney emission; guarantee near the oxidizing atmosphere that water-cooling wall is; changed again near the hot environment of water-cooling wall: from 100 flue gases of spending the left and right of chimney discharge; through spraying into as adherent wind after controlled thermal interchanger temperature control; the wearing and tearing of particle in namely avoiding discharging fume to water-cooling wall have reduced again near the temperature of water-cooling wall.Thus, water-cooling wall generation high temperature corrosion rely on two conditions-reducing atmosphere and hot environment are destroyed, effectively prevent the high temperature corrosion of water-cooling wall.Extract part of smoke from chimney, spraying into flue as adherent wind after treatment has following benefit: do not need external wind regime; Relatively reduce from dust, particle and the heat of chimney discharged to environment, favourable to environment; To a certain extent, also utilized the waste heat in the chimney emission, and near avoiding making water-cooling wall as wind regime because of the use air, temperature decline affects steam quality too much.
Be set side by side with two deflectors in the air outlet of adherent bellows, every deflector is divided into three section faces, and wherein, the first two section face is the plane, and a rear section face is curved surface.Angle between deflector the first two section face is between 160 °～175 °.The angle of inclination of every deflector is different; the air outlet angle of air outlet is also different; because two deflectors are divided into 3 tapered passages with air outlet; show as away from air-out and the angle between water-cooling wall of the passage of water-cooling wall larger; help like this from the blast of water-cooling wall that passage far away the wind flow of the passage close to from water-cooling wall, play the effect of adherent protection.In addition, because the outer rim of the air outlet of adherent bellows is grown and certain angle of inclination is arranged, further limit flow path to flue gas, be intended to allow the gas gas-phase objects in flue gas press away from the adherent wind flow of the outermost layer of water-cooling wall, make adherent wind performance maximum effect.
Description of drawings
Fig. 1 is that the utility model is combined with incinerator and is used schematic diagram.
Fig. 2 is Fig. 1 adherent bellows part section enlarged diagram described in the utility model.
The specific embodiment
The below is described in further detail the specific embodiment of the present utility model, but embodiment of the present utility model is not limited to this.
As shown in Figure 1, the utility model prevents the adherent wind system of incinerator water wall high temperature corrosion, comprises adherent wind air-supply arrangement and constriction device;
Adherent wind air-supply arrangement, the chimney 1, ash pump 2, controlled thermal interchanger 4, airduct 5 and the air channel 6 that comprise pipeline connection successively, be provided with on-line temperature monitoring instrument 3 on the pipeline between ash pump 2 and controlled thermal interchanger 4, be provided with flowmeter 7 and adjusting air valve 8 on air channel 6;
the constriction device is to be symmetricly set on the front wall 11 of the first flue 14 and the adherent bellows 9 on rear wall 13 inwalls, and the corresponding surface of these two adherent bellows 9 is the streamlined curved surface, the wall rounding off of the lower surface camber camber line of streamlined curved surface and front wall 11, rear wall 13, this structure, make the flue gas circulation area in the first flue constantly reduce, flue gas accelerates to concentrate in the middle of the first flue, after above flue gas arrives adherent bellows, the flue gas circulation area constantly increases again, so, the flue gas on front-back wall both sides is along the continuous soaring water-cooling wall direction of pouring into of the profile of adherent bellows, at this moment, due to effect of inertia, in the first flue gas of concentrating in the middle of flue do not fire particle also rest in the middle of or be later than gas gas-phase objects in flue gas to the speed of both sides diffusion, still wrapped up in by gas gas-phase objects, so both can alleviate and not fire particle to the wearing and tearing of water-cooling wall, can prevent from again not firing particle in the place's burning of nearly wall.
Be set side by side with two deflectors 12 in the air outlet 9-1 of adherent bellows 9, every deflector 12 is divided into three section faces, and wherein, the first two section face is the plane, and a rear section face is curved surface.Angle between deflector 12 the first two section faces is between 160 °～175 °.The angle of inclination of every deflector is different; the air outlet angle of air outlet 9-1 is also different; because two deflectors 12 are divided into 3 tapered passages with air outlet 9-1; show as away from air-out and the angle between water-cooling wall of the passage of water-cooling wall larger; help like this from the blast of water-cooling wall that passage far away the wind flow of the passage close to from water-cooling wall, play the effect of adherent protection.In addition, because the outer rim of the air outlet 9-1 of adherent bellows 9 is grown and certain angle of inclination is arranged, further limit flow path to flue gas, be intended to allow the gas gas-phase objects in flue gas press away from the adherent wind flow of the outermost layer of water-cooling wall, make adherent wind performance maximum effect.
On the inwall of front wall 11 and rear wall 13, adherent bellows 9 air outlet 9-1 above be provided with online detection of exhaust gas compositions instrument 10.The contact length of adherent bellows and front wall and rear wall is 0.8 meter～1.5 meters.
The smoke evacuation of chimney 1 is controlled at 100 ~ 150 ℃ through ash pump 3, controlled thermal interchanger 4(temperature) after send into adherent bellows 9, go out one's intention as revealed in what one says 9-1 by adherent bellows 9 and discharge.Online detection of exhaust gas compositions instrument 10, the Real-Time Monitoring smoke components, judgement atmosphere state, whether decision strengthens or reduces the exhaust air rate of one's intention as revealed in what one says 9-1.
In order not give flowing, conducting heat and bring too large impact of flue main flume, should strictly control the upper limit of adherent bellows 9 air outputs, the wind input quantity that should get rid of is no more than 3% of amount of actual air for combustion, should guarantee that flowmeter 7 is in normal operating conditions always.
In two deflectors 12, every deflector 12 is divided into three section faces, and wherein, the first two section face is the plane, and a rear section face is curved surface.Angle between deflector 12 the first two section faces can be adjusted between 160 °～175 °, two deflectors 12 are divided into 3 tapered passages with air outlet 9-1, and the different deflection angles of cooperation deflector 12 the first two section faces, after making the air-out acceleration ejection in these 3 passages, by the blast of the passage in back successively and spray to water-cooling wall, then pasting water-cooling wall up soaring, reach adherent effect, thereby form air film near water-cooling wall, guarantee oxidizing atmosphere, relative reduce water-cooling wall near zone temperature prevents high temperature corrosion.
Just can realize preferably the utility model as mentioned above.
Embodiment of the present utility model is not restricted to the described embodiments; other are any does not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitute, combination, simplify; all should be the substitute mode of equivalence, within being included in protection domain of the present utility model.
Claims (5)
1. an adherent wind system that prevents the incinerator water wall high temperature corrosion, is characterized in that comprising adherent wind air-supply arrangement and constriction device;
Adherent wind air-supply arrangement comprises chimney, ash pump, controlled thermal interchanger, airduct and air channel that pipeline successively connects, is provided with the on-line temperature monitoring instrument on the pipeline between ash pump and controlled thermal interchanger, is provided with flowmeter and adjusting air valve on the air channel;
The constriction device is to be symmetricly set on the front wall of the first flue and the adherent bellows on rear inner wall, and the corresponding surface of these two adherent bellows is the streamlined curved surface, the wall rounding off of the lower surface camber camber line of streamlined curved surface and front wall, rear wall; Adherent bellows are provided with air inlet and air outlet, and air inlet is communicated with the air channel, and the air outlet angle of air outlet is 170 °～175 ° with respect to the wall angle of front wall and rear wall, and the wind that air outlet blows out forms one deck airflow layer along the internal face of front wall and rear wall.
2. the adherent wind system that prevents the incinerator water wall high temperature corrosion according to claim 1, is characterized in that, is set side by side with two deflectors in the air outlet of adherent bellows, every deflector is divided into three section faces, wherein, the first two section face is the plane, and a rear section face is curved surface.
3. the adherent wind system that prevents the incinerator water wall high temperature corrosion according to claim 2, is characterized in that, the angle between deflector the first two section face is 160 °～175 °.
4. the adherent wind system that prevents the incinerator water wall high temperature corrosion according to claim 1, is characterized in that, on the inwall of front wall and rear wall, adherent bellows air outlet above be provided with online detection of exhaust gas compositions instrument.
5. the adherent wind system that prevents the incinerator water wall high temperature corrosion according to claim 1, is characterized in that, the contact length of adherent bellows and front wall and rear wall is 0.8 meter～1.5 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220647375 CN202993228U (en) | 2012-11-29 | 2012-11-29 | Wall-attaching air system preventing high temperature corrosion of water wall of garbage incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220647375 CN202993228U (en) | 2012-11-29 | 2012-11-29 | Wall-attaching air system preventing high temperature corrosion of water wall of garbage incinerator |
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| Publication Number | Publication Date |
|---|---|
| CN202993228U true CN202993228U (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220647375 Withdrawn - After Issue CN202993228U (en) | 2012-11-29 | 2012-11-29 | Wall-attaching air system preventing high temperature corrosion of water wall of garbage incinerator |
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| CN (1) | CN202993228U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966959A (en) * | 2012-11-29 | 2013-03-13 | 华南理工大学 | Wall-attached air system for preventing high temperature corrosion of water cooled wall of garbage incinerator |
| 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 201220647375 patent/CN202993228U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966959A (en) * | 2012-11-29 | 2013-03-13 | 华南理工大学 | Wall-attached air system for preventing high temperature corrosion of water cooled wall of garbage incinerator |
| CN102966959B (en) * | 2012-11-29 | 2015-01-28 | 华南理工大学 | Wall-attached air system for preventing high temperature corrosion of water cooled wall of garbage incinerator |
| 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 |
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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: 20150128 |
|
| RGAV | Abandon patent right to avoid regrant |