CN102374542A - Novel incineration fire grate segment with left self-rotating combustion airflow - Google Patents
Novel incineration fire grate segment with left self-rotating combustion airflow Download PDFInfo
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- CN102374542A CN102374542A CN2011102087203A CN201110208720A CN102374542A CN 102374542 A CN102374542 A CN 102374542A CN 2011102087203 A CN2011102087203 A CN 2011102087203A CN 201110208720 A CN201110208720 A CN 201110208720A CN 102374542 A CN102374542 A CN 102374542A
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Abstract
The invention discloses a novel incineration fire grate segment with left self-rotating combustion airflow. The novel incineration fire grate segment is mainly characterized in that: the incineration fire grate segment is composed of left-rotating fire grate segments in a lateral and adjacent arrangement manner; each fire grate segment is mainly composed of a clamping groove, a fire grate, a spraying neck and a spray nozzle; the spray nozzle is composed of a spout and a spray nozzle internal spiral groove; the spray neck and spray nozzle form a combustion air through hole; the combustion air through hole of each left-rotating fire grate segment penetrates from the inner wall to the outer wall of the head end of the fire grate segment in an inclined angle from right to left; and the direction of the thread in the spray nozzle internal spiral groove is in clockwise rotation viewed from the spout to the spraying neck. The novel incineration fire grate segment has the advantages of reducing clinker ignition loss of domestic garbage in China, improving heat value of garbage, improving incineration efficiency, and achieving energy saving and environmental protection of garbage incineration.
Description
Technical field
The present invention relates to technology such as mechanics, engineering mechanics, hydrodynamics and two phase flow, relate to the burning fire-grating chip architecture, refer in particular to novel incinerator screening with left spinning combustion-gas flow.
Background technology
Recent two decades comes; No matter be in the world or domestic; Because continually developing of natural resources utilizes and The development in society and economy, particularly along with the high concentration of population and developing rapidly of urbanization, the rubbish of countries in the world all increases with the average speed faster than three times of its economic growth rates.The annual waste incineration amount in the whole world is about 1.1 hundred million tons, and the incineration treatment of garbage factory of the overwhelming majority is distributed in developed country.About 1900 of the existing incineration plant of Japan, nearly 4,000 ten thousand tons of annual burning disposal amount is the largest country of incineration treatment of garbage in the world.Advantages such as incineration treatment of garbage has that floor space is little, addressing is easier to, handles fast, remarkable, the innoxious more thorough and recyclable waste gas of incineration of minimizing obtain application more and more widely in countries in the world.
The development trend of China's garbage disposal is: the regeneration on the categorised collection basis more and more comes into one's own; The standard of garbage loading embeading is with increasingly high, and ratio will progressively descend; Waste incineration is with stable development, and waste gas of incineration utilizes the ratio of particularly cogeneration to rise to some extent.Because national policy encourage growth waste incineration and generating electricity industry, existing at present a lot of garbage incinerating power plants put into operation, and more or less a hundred waste incineration and generating electricity project is just among planning construction.But because the characteristic of China's house refuse is: contain the moisture height, be generally 55%-65%, some southern cities summer up to 70%; Simultaneously; The kitchen is surplus big with debirs ratio such as food and drink in China's house refuse, be 45%-55%, so refuse thermal value is lower; It is abundant inadequately to burn, and hot burn decrement rate is higher.In addition, because rubbish is thicker on existing burning fire grate, stir insufficiently, mix inhomogeneously, firing efficiency is low, causes the economic benefit of many garbage incinerating power plants undesirable; Also because temperature is not high enough in the incinerator burner hearth, pernicious gas is more in the flue gas of discharge, causes substantial pollution.
Therefore, the refuse incinerator row that to the characteristics of China's rubbish, the development investment cost is low, energy-saving and environmental protection, actual motion business efficiency are high just seems particularly important.
Summary of the invention
The purpose of this invention is to provide a kind of novel incinerator screening with left spinning combustion-gas flow; It can reduce the hot burn decrement rate of house refuse, improves the calorific value of rubbish, improves firing efficiency; Realize the energy-saving and environmental protection of waste incineration, solve all the problem that exists in the aforementioned prior art.
For realizing the object of the invention; The inventor takes following technical scheme: with the novel incinerator screening of left spinning combustion-gas flow; It mainly contains, and left-handed fire grate segment is laterally adjacent one by one to rearrange; Fire grate segment all mainly is made up of draw-in groove, fire grate body, spray neck, nozzle, and wherein nozzle then is made up of spout and nozzle inside spin groove, and spray neck and nozzle constitute the combustion air through hole; The combustion air through hole of left-handed fire grate segment be from fire grate segment head end inwall with right-to-left angle of inclination break-through to fire grate segment head end outer wall, the hand of spiral in the nozzle inside spin groove is seen as toward spray neck direction from spout and turns clockwise.
The combustion air through hole of the left-handed fire grate segment of patent of the present invention is with right-to-left angle of inclination break-through to fire grate segment head end outer wall from fire grate segment head end inwall; Hand of spiral in the nozzle inside spin groove is seen as toward spray neck direction from spout and turns clockwise; It is that (gas comes flow path direction to rotate left in anticlockwise that its ejection air-flow spinning direction is observed the left hand rule of once recording; Hold cylindrical air-flow with left hand and come flow path direction, thumb is consistent with airflow direction, and then four finger directions are air-flow spinning direction).The air velocity of left-handed fire grate segment spontaneous combustion air hole ejection can be accomplished spinning (band spiral air flow) in the patent of the present invention, forms little turbulent flow, can play the effect of cutting rubbish; Perhaps push, shear, pulverize the agglomerating rubbish of sintering, avoid rubbish agglomerating, improve efficiency of combustion; And to a certain degree play the purpose of upset material; Make the material (as: rubbish, stalk, mud, timber etc.) on the fire grate can roll, stir, obtain more fully burning, improve the calorific value of waste incineration; Reduce the hot burn decrement rate of rubbish, effectively improve waste incineration efficient.The little turbulent flow that left-handed fire grate segment combustion air flow forms contacts with fire grate, can play the cooling fire grate, avoids the fire grate segment high temperature corrosion; And the air-flow entering burner hearth of absorption fire grate segment heat, can improve efficiency of combustion.
The present invention is applicable to newly-built waste incineration project, also is applicable to the waste incineration project that will transform.
Description of drawings
Fig. 1 cuts open structural representation in the left-handed fire grate segment of the present invention;
Fig. 2 is a left-handed fire grate segment upward view of the present invention;
Fig. 3 shows sketch map for left-handed fire grate segment a-a shown in Figure 1 cuts open;
Fig. 4 is a left-handed fire grate segment left view of the present invention;
Fig. 5 is the little turbulent flow sketch map of spinning that left-handed fire grate segment combustion air flow of the present invention forms;
Fig. 6 is the work sketch map after left-handed fire grate segment of the present invention is arranged assembling;
Fig. 7 is for left-handed fire grate segment of the present invention and with the vertical permutation and combination use of the fire grate segment of right spinning combustion-gas flow work sketch map;
Fig. 8 is the vertical permutation and combination use of the fire grate segment work sketch map of left-handed fire grate segment of the present invention and old-fashioned no spinning combustion-gas flow.
Specific embodiments
Combine Figure of description to describe embodiment of the present invention in detail: like Fig. 1 and shown in Figure 6, with the novel incinerator screening of left spinning combustion-gas flow, it mainly contains, and left-handed fire grate segment A is laterally adjacent one by one to rearrange at present; Left-handed fire grate segment mainly is made up of draw-in groove 1, fire grate body 5, spray neck 3, nozzle 4; Wherein 4 at nozzle is made up of spout 7 and nozzle inside spin groove 8, and spray neck 3 and nozzle 4 formation combustion air through holes are as shown in Figure 3; The combustion air through hole of left-handed fire grate segment A is with right-to-left angle of inclination break-through to fire grate segment head end outer wall 92 from fire grate segment head end inwall 91; Hand of spiral in the nozzle inside spin groove is seen as toward spray neck direction from spout and turns clockwise, and as shown in Figure 4, the combustion air through hole is located at fire grate segment head end 91 middle parts of fire grate segment A; As depicted in figs. 1 and 2, the fire grate body back side is provided with gusset 2.
During work, the spray neck 3 of a left-handed fire grate segment of wind process gets into nozzles 4, and the nozzle inside spin grooves 8 in the nozzle 4 can change the direction of combustion-gas flows, the air-flow formation spinning (anticlockwise, as shown in Figure 5) that nozzle is come out.Rubbish fully cuts, mixes under the effect of left spinning air-flow, and is thoroughly broken, can fully burning on fire grate.Little turbulent flow as shown in Figure 6, that left-handed fire grate segment combustion air flow forms contacts with fire grate, can play the cooling fire grate, avoids the fire grate segment high temperature corrosion; And the air-flow entering burner hearth of absorption fire grate segment heat, can improve efficiency of combustion.
The combustion air through hole of left-handed fire grate segment is located at the fire grate body head end middle part of fire grate segment in above-mentioned embodiment; The thin ash of rubbish and the uncombusted fine particle that both can prevent to be deposited on the fire grate leak material through nozzle; Also can play the effect of rubbish prebake processing, pulverization process; Further reduce hot burn decrement rate, improved rubbish thermalization efficient.
The fire grate body back side of left-handed fire grate segment is provided with gusset in above-mentioned embodiment, can strengthen the intensity of fire grate, prolongs the service life of fire grate, practices thrift cost.
In the above-described embodiments, the combustion air through hole of left-handed fire grate segment A is the left side of break-through to fire grate segment head end outer wall 92, and certainly, the combustion air through hole of left-handed fire grate segment A also can be centre position or other position of break-through to fire grate segment head end outer wall.
The novel incinerator screening of in the above-described embodiments band left side spinning combustion-gas flow can be used with the vertical permutation and combination of other type fire grate segment, as with use (as shown in Figure 8) with the fire grate segment B (as shown in Figure 7) of right spinning combustion-gas flow or with the vertical permutation and combination of the fire grate segment C of old-fashioned no spinning combustion-gas flow.
Claims (6)
1. with the novel incinerator screening of left spinning combustion-gas flow; It is characterized in that: it mainly contains, and left-handed fire grate segment is laterally adjacent one by one to rearrange; Fire grate segment all mainly is made up of draw-in groove, fire grate body, spray neck, nozzle; Wherein nozzle then is made up of spout and nozzle inside spin groove; Spray neck and nozzle constitute the combustion air through hole, the combustion air through hole of left-handed fire grate segment be from fire grate segment head end inwall with right-to-left angle of inclination break-through to fire grate segment head end outer wall, the hand of spiral in the nozzle inside spin groove is seen as and turns clockwise toward spraying the neck direction from spout.
2. the novel incinerator screening of the left spinning combustion-gas flow of band according to claim 1 is characterized in that: the combustion air through hole of left-handed fire grate segment is located at the fire grate body tail end middle part of fire grate segment.
3. the novel incinerator screening of the left spinning combustion-gas flow of band according to claim 1 is characterized in that: the fire grate body back side of left-handed fire grate segment is provided with gusset.
4. the novel incinerator screening of the left spinning combustion-gas flow of band according to claim 1 is characterized in that: the combustion air through hole of left-handed fire grate segment is the left side of break-through to fire grate segment head end outer wall.
5. the novel incinerator screening of the left spinning combustion-gas flow of band according to claim 1 is characterized in that: the combustion air through hole of left-handed fire grate segment is the centre position of break-through to fire grate segment head end outer wall.
6. the novel incinerator screening of the left spinning combustion-gas flow of band according to claim 1 is characterized in that: the fire grate segment of the left spinning combustion-gas flow of described band with use with the fire grate segment of right spinning combustion-gas flow or with the vertical permutation and combination of the fire grate segment of old-fashioned no spinning combustion-gas flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102087203A CN102374542A (en) | 2011-07-25 | 2011-07-25 | Novel incineration fire grate segment with left self-rotating combustion airflow |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102087203A CN102374542A (en) | 2011-07-25 | 2011-07-25 | Novel incineration fire grate segment with left self-rotating combustion airflow |
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| CN102374542A true CN102374542A (en) | 2012-03-14 |
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| CN2011102087203A Pending CN102374542A (en) | 2011-07-25 | 2011-07-25 | Novel incineration fire grate segment with left self-rotating combustion airflow |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4463688A (en) * | 1982-05-13 | 1984-08-07 | Von Roll Ag. | Grate block for a refuse incineration grate |
| US4719900A (en) * | 1985-06-13 | 1988-01-19 | Martin Walter J | Grate for use in industrial furnaces |
| CN101169241A (en) * | 2006-10-26 | 2008-04-30 | 株式会社韩国能量 | Combustion apparatus for r.p.f boiler |
-
2011
- 2011-07-25 CN CN2011102087203A patent/CN102374542A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4463688A (en) * | 1982-05-13 | 1984-08-07 | Von Roll Ag. | Grate block for a refuse incineration grate |
| US4719900A (en) * | 1985-06-13 | 1988-01-19 | Martin Walter J | Grate for use in industrial furnaces |
| CN101169241A (en) * | 2006-10-26 | 2008-04-30 | 株式会社韩国能量 | Combustion apparatus for r.p.f boiler |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Zefeng Inventor after: Zeng Jijin Inventor after: Chen Guoyan Inventor before: Zeng Jijin Inventor before: Chen Guoyan |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CENG JIJIN CHEN GUOYAN TO: CHEN ZEFENG CENG JIJIN CHEN GUOYAN |
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Application publication date: 20120314 |