CN2125771U - Prefix furnace for cane chaft-coal powder mixed combustion boiler - Google Patents
Prefix furnace for cane chaft-coal powder mixed combustion boiler Download PDFInfo
- Publication number
- CN2125771U CN2125771U CN 92222646 CN92222646U CN2125771U CN 2125771 U CN2125771 U CN 2125771U CN 92222646 CN92222646 CN 92222646 CN 92222646 U CN92222646 U CN 92222646U CN 2125771 U CN2125771 U CN 2125771U
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- furnace
- precell
- boiler
- air supply
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- Gasification And Melting Of Waste (AREA)
Abstract
The utility model relates to a prefix furnace for a bagacillo-coal powder mixed burning boiler furnace, comprising a furnace wall, a furnace top with a water cooling pipe path, a material dropping pipe, an air supply spout, an air supply pipeline, an expansion joint, a flue, a layered burning furnace grate, a partition wall, etc., wherein, the prefix furnace is arranged on the front lower part of a boiler body. The bagacillo which enters the prefix furnace are burned by layered burning and chamber burning. The trip of flame is long. The large and small particles of the bagacillo can be burned up. The efficiency of the boiler furnace can be increased. The content of the unburned bagacillo in ash slag can be reduced. Coal saving and environmental protection are benefited. After the bagacillo feeding and air intaking are stopped by the prefix furnace, the boiler furnace can burn the coal powder singly.
Description
The utility model relates to the combustion apparatus that uses pulverized fuel, is the improvement of chamber combusting boiler combustion apparatus.
The sugarcane chaff is the key industry waste material that cane sugar manufacture factory can fully utilize, and is the combustible with certain caloric value.Sugar refinery needs power and steam, be unable to do without boiler plant, if a large amount of sugarcane chaff waste materials can not act as a fuel and be handled and utilize, not only can cause environmental pollution but also can cause the waste of fuel.Owing to have only 3-4 month every year cane sugar manufacture phase, therefore require boiler not only can carry out sugarcane chaff-coal dust multifuel combustion but also can be at non-sugaring phase single fire coal dust in the sugaring phase.At present, sugarcane chaff-coal dust multifuel combustion stove that China is commonly used, a kind of is chain furnace, the sugarcane chaff carries out layer combustion on fire grate; Another kind is the chamber burner, and the sugarcane chaff sprays into burner hearth near coal burner, carries out suspension combustion.The former is prone to mechanical breakdown because of the chain furnace complex structure; Latter's sugarcane chaff fire stroke is short, and bulky grain sugarcane chaff easily directly falls into furnace hopper, can not burn, and the pyrogen that the sugarcane chaff is had can not be fully used, and has increased the lime-ash discharge capacity of boiler simultaneously.
Task of the present utility model is to provide the precell of a kind of sugarcane chaff-coal dust multi-fuel fired boiler.To have the chamber combusting boiler now and assemble this precell, sugarcane chaff fire stroke lengthening, bulky grain and short grained sugarcane chaff all can burn, and the pyrogen that the sugarcane chaff is had can be fully used.Thereby can improve the efficient of boiler and reduce the lime-ash discharge capacity of boiler.This precell is after stopping charging of sugarcane chaff and air intake, and boiler can the single fire coal dust.
The utility model is achieved in that in the boiler furnace front lower place of chamber combusting boiler (being boiler body) precell is set.The furnace wall that the four sides impales constitutes furnace chamber, constitutes furnace roof by the water-cooled pipeline, and its water-cooled pipeline is the extension of the preceding water-cooling wall of boiler body.The preceding water-cooling wall that is its water-cooled pipeline and boiler body links.Furnace roof or furnace wall top are provided with material blanking tube; Expansion joint is located at the top of precell furnace wall and flue, and its top that links to each other with prefabricated component in being embedded in furnace wall and flue, its underpart links to each other with boiler furnace hopper and slag well; Be provided with a layer fire grate in the bottom of furnace wall, a large amount of air feed spouts evenly are set on the furnace wall more than the fire grate, outside the furnace wall that is provided with air feed spout place air supply line is housed, this pipeline communicates with the air feed spout; Flue is positioned at precell and is connected above the furnace wall of slag well one side and with the slag well.
The precell of the utility model sugarcane chaff-coal dust multi-fuel fired boiler is when carrying out multifuel combustion, send into the sugarcane chaff by material blanking tube, air blast is blown in the precell furnace chamber by air supply line, air feed spout, a large amount of granule sugarcane chaff suspension combustions in precell, a part of oarse-grained sugarcane chaff falls within on the fire grate and burns.The high temperature cigarette that sugarcane chaff burning back produces carries in the burner hearth that does not burn the sugarcane chaff and enter boiler body through pre-dried sugarcane chaff and burns away.Meanwhile spray into coal dust firing in the burner hearth.Like this, the sugarcane chaff is through grate firing and chamber combustion, and stroke is long, and burning fully.Bulky grain and granule sugarcane chaff all can burn, and the pyrogen that the sugarcane chaff is had is fully used.Thereby can improve the overall efficiency of boiler, can reduce the lime-ash discharge capacity of boiler, further reduce environmental pollution.This precell is after stopping charging of sugarcane chaff and air-supply, and boiler can the single fire coal dust.Or the charging of sugarcane chaff and the air-supply that still keep precell, and boiler do not spray into coal dust in vivo, and boiler just becomes a single fire sugarcane chaff boiler like this.
Be described further below in conjunction with accompanying drawing
Fig. 1 is the side sectional view of precell
Fig. 2 is the front section view of precell
Can see that by Fig. 1 precell is located at the front lower place of boiler body 1, constitute furnace chamber by furnace wall 3, furnace roof 2 is made of the water-cooled pipeline, and it can be the extension of preceding water-cooling wall, and 15 is water-cooling wall collection case, is positioned at the bottom of boiler body burner hearth.Material blanking tube 7 is located at furnace roof or furnace wall top, and flue 5 is positioned at precell above the furnace wall of slag well 9 one sides, and the slag downhole is an ash pit 10.Expansion joint 8 bottoms link to each other with prefabricated component in being embedded in furnace wall and flue, and its top links to each other with boiler furnace hopper and slag well.Can find out that in Fig. 2 the furnace wall bottom is provided with grate firing fire grate 11 is arranged some on furnace wall above the fire grate and partition wall air feed spout 13, outside furnace wall, reach and be provided with air feed spout part in the partition wall air supply line 4 is housed that fire grate has ash discharge ditch 6.In order to be suitable for regulating neatly in all cases air quantity, to adapt to quantity combusted and the control precell outlet cigarette temperature of sugarcane chaff in precell.As one of embodiment is that the air feed spout is divided into multilayer, the also corresponding multilayer that completely cuts off mutually that is divided into of air supply line, and every layer each communicate with one deck spout, and every layer of pipeline is provided with separately independently controllable register 14, to control the ventilation of each layer pipeline.Two of embodiment be in the precell furnace chamber, be provided with one two or more have the hollow batardeau 12 of air supply line, furnace chamber is divided into two or more sub-furnace chambers, partition wall two sides are provided with the air feed spout, hollow batardeau communicates with air supply line.Like this, can make the sugarcane chaff on the precell fire grate evenly distributed combustion, burn with air distribution more even.
The precell of this sugarcane chaff-coal dust multi-fuel fired boiler is applicable to the natural circulation boiler that low, middle pressure ∏ type is arranged.After measured, the sugarcane chaff advances the stove heat and accounts for 45% of stove total amount of heat into, has both saved a large amount of coals, has protected environment again.This stove can also sawdust, rice husk etc. acts as a fuel.
Claims (3)
1, the precell of sugarcane chaff-coal dust multi-fuel fired boiler, it is characterized in that being provided with precell in the front lower place of boiler body 1, constitute furnace chamber by furnace wall 3, constitute furnace roof 2 by the water-cooled pipeline, its water-cooled pipeline links to each other with the preceding water-cooling wall of boiler body, material blanking tube 7 is established on furnace roof or furnace wall top, expansion joint 8 is located at the top of precell and flue, its underpart links to each other with the top product that the top is embedded in furnace wall and the flue, its top links to each other with boiler furnace hopper and slag well, be provided with grate firing fire grate 11 in the bottom of furnace wall, the air feed spout 13 of uniform some on the furnace wall more than the fire grate, air supply line 4 is housed outside the furnace wall that is provided with air feed spout place, and this air supply line communicates with the air feed spout, and flue is positioned at precell and is connected above the furnace wall of slag well one side and with the slag well.
2, according to the precell of the described sugarcane chaff of claim 1-coal dust multi-fuel fired boiler, it is characterized in that air feed spout 13 is divided into multilayer, air supply line 4 is also corresponding to be divided into the isolated mutually air channel of multilayer, and each communicates every layer of air channel with one deck spout, and every layer of pipeline is provided with and independently regulates deep bead 14 separately.
3, according to the precell of claim 1 or 2 described sugarcane chaff-coal dust multi-fuel fired boilers, it is characterized in that in the precell furnace chamber, being provided with 1,2 or a plurality of hollow batardeau 12 that has air supply line, furnace chamber is divided into 2 or a plurality of sub-furnace chamber, the both sides of partition wall 12 are provided with the air feed spout, and hollow batardeau communicates with air supply line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92222646 CN2125771U (en) | 1992-05-27 | 1992-05-27 | Prefix furnace for cane chaft-coal powder mixed combustion boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92222646 CN2125771U (en) | 1992-05-27 | 1992-05-27 | Prefix furnace for cane chaft-coal powder mixed combustion boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2125771U true CN2125771U (en) | 1992-12-23 |
Family
ID=4965538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92222646 Granted CN2125771U (en) | 1992-05-27 | 1992-05-27 | Prefix furnace for cane chaft-coal powder mixed combustion boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2125771U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213442A (en) * | 2011-05-25 | 2011-10-12 | 无锡华光锅炉股份有限公司 | Front-end furnace chamber structure of boiler |
-
1992
- 1992-05-27 CN CN 92222646 patent/CN2125771U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213442A (en) * | 2011-05-25 | 2011-10-12 | 无锡华光锅炉股份有限公司 | Front-end furnace chamber structure of boiler |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |