CN101793389A - Bagasse-fired boiler - Google Patents
Bagasse-fired boiler Download PDFInfo
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- CN101793389A CN101793389A CN 201010142350 CN201010142350A CN101793389A CN 101793389 A CN101793389 A CN 101793389A CN 201010142350 CN201010142350 CN 201010142350 CN 201010142350 A CN201010142350 A CN 201010142350A CN 101793389 A CN101793389 A CN 101793389A
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- bagasse
- fixed grate
- grate
- fired boiler
- burner hearth
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Abstract
The invention relates to a bagasse-fired boiler which can ensure the smooth operation of the boiler, save resources, improve the utilization rate of the resources and protect the environment. The technical scheme is as follows: the bagasse-fired boiler comprises a furnace chamber, a feeding device, a grate, boiler drums, a tail flue, a superheater chamber, a soot blower and a boiler steel frame, wherein the grate is arranged at the lower part of the furnace chamber, the feeding device is arranged at the front part of the furnace chamber, the furnace chamber, the superheater chamber, the boiler drums and the tail flue are sequentially communicated, and the bagasse-fired boiler is characterized in that the grate is a water-cooled fixed grate specifically, the boiler drums are double boiler drums specifically, the double boiler drums are communicated through a convection bank, and the feeding device is arranged on the upper inclined side of the water-cooled fixed grate.
Description
Technical field
The present invention relates to the boiler plant field, be specially a kind of bagasse-fired boiler.
Background technology
When self-contained thermoelectric plant, industrial production, need to use the steam of boiler generation, the normally used fuel of boiler is fossil fuel, as coal, oil and gas etc.Fossil fuel are non-renewable primary energy, owing to be becoming tight primary energy supply day, price is constantly soaring, has become the significant problem of serious restriction national economy sustainable development.
For the shortage of tackling primary energy with develop the economy, improve the people's livelihood, the problem that the energy is had more demands, except strengthening saving energy and reduce the cost, improve the utilization rate of primary energy, also should actively make great efforts to seek new forms of energy, this has become the only way of various countries' energy strategy development.
Bagasse is the discarded object that sugaring produces, and also is the valuable energy.If abandon as industrial refuse, not only waste resource, also can influence environment.Utilize bagasse to burn in boiler, the steam of generation is used for generating and steam supply, has the social benefit of energy savings, protection environment, and good economic benefits is also arranged.
But because the lime-ash ash fusion point that the bagasse burning produces is low, and the grate surface temperature height of existing boiler, lime-ash melts on grate surface easily, easily stop up the air port on the grate surface, be unfavorable for that bagasse burns, also be unfavorable for deslagging, and fire grate burnt out easily also, so bagasse acts as a fuel and applies to boiler industry and encounter a difficulty.
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Summary of the invention
At the problems referred to above, the invention provides a kind of bagasse-fired boiler, it can guarantee the smooth and easy operation of boiler, and saving has been supported resource, has improved resource utilization, protected environment.
Its technical scheme is such: it comprises burner hearth, charging gear, fire grate, drum, back-end ductwork, superheater chamber, soot blower, boiler steelframe, described fire grate is arranged in described lower furnace portion, described charging gear is arranged in the front portion of described burner hearth, burner hearth, superheater chamber, drum, back-end ductwork are connected successively, it is characterized in that: described fire grate is specially the water-cooled fixed grate, described drum is specially two drums, be communicated with by convection bank between described pair of drum, the oblique upper of described water-cooled fixed grate is furnished with described charging gear;
It is further characterized in that:
Described water-cooled fixed grate specifically comprises fixed grate, water cooling tube, and described water cooling tube is arranged in the bottom of described water-cooled grate, and described fixed grate, described water cooling tube fuse;
Described fixed grate has a down dip near a side direction of boiler steelframe;
Described charging gear is specially the bagasse device of sowing grass seeds by duster, and the described bagasse device entrance point of sowing grass seeds by duster connects the charging track of bagasse, and its port of export is towards plane that described fixed grate forms;
The below of described water-cooled fixed grate is placed with ash dropping hopper, and a wind that blows is vertically upward arranged in the described ash dropping hopper, and a described wind connects outside blowing device;
Described water-cooled fixed grate is equipped with ash port by the boiler steelframe, and the upper height of described ash port is lower than described water-cooled fixed grate minimum point;
The outlet of secondary wind is installed on the furnace wall of described burner hearth, and the combustion zone of described burner hearth is aimed in described secondary wind outlet;
The top of described water-cooled fixed grate is furnished with face arch, and described face arch is positioned at the sow grass seeds by duster top of the port of export of device of described bagasse;
The middle part of described burner hearth is equipped with oil burner;
Indoor high temperature superheater, the low temperature superheater of being equipped with successively of described superheater, the flue gas that produces in the burner hearth is in turn by high temperature superheater, low temperature superheater, be placed with economizer, air preheater in the described back-end ductwork, described superheater chamber, convection bank, back-end ductwork correspondence respectively are equipped with described soot blower.
After adopting said structure of the present invention, the water-cooled fixed grate is arranged in described lower furnace portion, because the temperature of the fixed grate of water-cooled fixed grate is low, can avoids bagasse burning coking on fixed grate, thereby make bagasse can be used as using energy source in boiler industry; Boiler has adopted two drums in addition, and is communicated with by convection bank, effectively prevents the economizer boiling, heat energy is all transformed enter in two drums, thereby has improved resource utilization, save and supported resource, protected environment; Bagasse is in being thrown into the process of burner hearth, short grained bagasse is held up and burning by a wind, the combustion system that forms is the chamber combustion, the layout of secondary wind outlet and face arch makes the time increase that bagasse stops in stove in addition, and supplemental oxygen, can make bagasse completing combustion, improve the efficiency of combustion of bagasse; The below of water-cooled fixed grate be placed with ash dropping hopper and inclination fixed grate one side ash port the smooth discharge that has ensured lime-ash is set; Oil burner is installed at the burner hearth middle part, when bagasse failure of fuel or feed deficiency, can make boiler continue to produce steam and be used for generating and steam supply; The layout of soot blower can in time be removed coking and dust stratification on the heating surface, does not influence the heat transfer of each heating surface; In sum, adopt said structure of the present invention after, it can guarantee the smooth and easy operation of boiler, and saves and to have supported resource, improved resource utilization, protected environment.
Description of drawings
Fig. 1 is a front view structural representation of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to the cutaway view structural representation;
Fig. 3 is the B place partial enlarged drawing of Fig. 3.
The specific embodiment
See Fig. 1, Fig. 2, Fig. 3, it comprises burner hearth 1, charging gear, fire grate, drum, back-end ductwork 2, superheater chamber 3, soot blower 4, boiler steelframe 5, fire grate is arranged in burner hearth 1 bottom, charging gear is arranged in the front portion of burner hearth 1, burner hearth 1, superheater chamber 2, drum, back-end ductwork 2 are connected successively, and fire grate is specially water-cooled fixed grate 6, and drum is specially two drums 7,7 of two drums are communicated with by convection bank 8, and the oblique upper of water-cooled fixed grate 6 is furnished with charging gear; Water-cooled fixed grate 6 specifically comprises fixed grate 9, water cooling tube 10, and water cooling tube 10 is arranged in the bottom of fixed grate 9, and fixed grate 9, water cooling tube 10 fuse; Fixed grate 9 has a down dip near a side direction of boiler steelframe 5; Charging gear is specially the bagasse device 11 of sowing grass seeds by duster, and bagasse device 11 entrance points of sowing grass seeds by duster connect the charging track 12 of bagasse, and its port of export is towards plane that fixed grate 9 forms; The below of water-cooled fixed grate 6 is placed with ash dropping hopper 13, has 14, the wind of a wind 14 that blow vertically upward to connect outside air blast (do not draw among the figure, belong to existing mature structure) in the ash dropping hopper 13; Water-cooled fixed grate 6 is equipped with ash port 14 near a side of boiler steelframe 5, and the upper height of ash port 14 is lower than water-cooled fixed grate 6 minimum points; Secondary wind outlet 15 is installed on the furnace wall of burner hearth 1, and the combustion zone of burner hearth 1 is aimed in secondary wind outlet 15; The top of water-cooled fixed grate 6 is furnished with face arch 16, and face arch 16 is positioned at the sow grass seeds by duster top of the port of export of device 11 of bagasse; The middle part of burner hearth 1 is equipped with oil burner 17; High temperature superheater 18, low temperature superheater 19 are installed in the superheater chamber 3 successively, flue gas is in turn by high temperature superheater 18, low temperature superheater 19, be placed with economizer 20, air preheater 21 in the back-end ductwork 2, superheater chamber 3, convection bank 8, back-end ductwork 2 correspondence respectively are equipped with soot blower 4.
Its operation principle is as follows: the bagasse device 11 of sowing grass seeds by duster sprays bagasse to burner hearth 1, bagasse is in being thrown into the process of burner hearth, short grained bagasse is held up and burning by a wind, the combustion system that forms is the chamber combustion, the time that the layout of outlet 15 of secondary wind and face arch 16 makes bagasse stop in burner hearth 1 increases, can make bagasse completing combustion, improve the efficiency of combustion of bagasse, a lime-ash part enters into ash dropping hopper 13 by the space of fixed grate 9, a part drops into ash port 14 in addition, and the flue gas that burner hearth 1 produces is in turn by high temperature superheater 18, low temperature superheater 19, enter into back-end ductwork 2 after the convection bank 8.
Claims (10)
1. bagasse-fired boiler, it comprises burner hearth, charging gear, fire grate, drum, back-end ductwork, superheater chamber, soot blower, boiler steelframe, described fire grate is arranged in described lower furnace portion, described charging gear is arranged in the front portion of described burner hearth, burner hearth, superheater chamber, drum, back-end ductwork are connected successively, it is characterized in that: described fire grate is specially the water-cooled fixed grate, described drum is specially two drums, be communicated with by convection bank between described pair of drum, the oblique upper of described water-cooled fixed grate is furnished with described charging gear.
2. a kind of bagasse-fired boiler according to claim 1 is characterized in that: described water-cooled fixed grate specifically comprises fixed grate, water cooling tube, and described water cooling tube is arranged in the bottom of described water-cooled grate, and described fixed grate, described water cooling tube fuse.
3. a kind of bagasse-fired boiler according to claim 2 is characterized in that: described fixed grate has a down dip near a side direction of boiler steelframe.
4. a kind of bagasse-fired boiler according to claim 1, it is characterized in that: described charging gear is specially the bagasse device of sowing grass seeds by duster, the described bagasse device entrance point of sowing grass seeds by duster connects the charging track of bagasse, and its port of export is towards plane that described fixed grate forms.
5. a kind of bagasse-fired boiler according to claim 1 is characterized in that: the below of described water-cooled fixed grate is placed with ash dropping hopper, and a wind that blows is vertically upward arranged in the described ash dropping hopper, and a described wind connects outside blowing device.
6. a kind of bagasse-fired boiler according to claim 1 is characterized in that: described water-cooled fixed grate is equipped with ash port by the boiler steelframe, and the upper height of described ash port is lower than described water-cooled fixed grate minimum point.
7. a kind of bagasse-fired boiler according to claim 1 is characterized in that: the outlet of secondary wind is installed on the furnace wall of described burner hearth, and the combustion zone of described burner hearth is aimed in described secondary wind outlet.
8. a kind of bagasse-fired boiler according to claim 1 is characterized in that: the top of described water-cooled fixed grate is furnished with face arch, and described face arch is positioned at the sow grass seeds by duster top of the port of export of device of described bagasse.
9. a kind of bagasse-fired boiler according to claim 1 is characterized in that: the middle part of described burner hearth is equipped with oil burner.
10. a kind of bagasse-fired boiler according to claim 1, it is characterized in that: indoor high temperature superheater, the low temperature superheater of being equipped with successively of described superheater, the flue gas that produces in the burner hearth is in turn by high temperature superheater, low temperature superheater, be placed with economizer, air preheater in the described back-end ductwork, described superheater chamber, convection bank, back-end ductwork correspondence respectively are equipped with described soot blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010142350 CN101793389A (en) | 2010-04-09 | 2010-04-09 | Bagasse-fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010142350 CN101793389A (en) | 2010-04-09 | 2010-04-09 | Bagasse-fired boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101793389A true CN101793389A (en) | 2010-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010142350 Pending CN101793389A (en) | 2010-04-09 | 2010-04-09 | Bagasse-fired boiler |
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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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1029660A (en) * | 1962-11-05 | 1966-05-18 | Babcock & Wilcox Ltd | Improvements relating to boilers utilising waste material |
| JPH06137535A (en) * | 1992-05-26 | 1994-05-17 | Takuma Co Ltd | Burner for boiler |
| CN2248290Y (en) * | 1995-12-18 | 1997-02-26 | 哈尔滨工业大学 | Biological material-burning fluidized bed boiler |
| CN200975663Y (en) * | 2006-09-05 | 2007-11-14 | 广州市优华能源技术有限公司 | Circulating fluid bed boiler by burning biomass |
| CN201066114Y (en) * | 2007-07-03 | 2008-05-28 | 无锡中正锅炉有限公司 | Boiler using biological energy as fuel |
-
2010
- 2010-04-09 CN CN 201010142350 patent/CN101793389A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1029660A (en) * | 1962-11-05 | 1966-05-18 | Babcock & Wilcox Ltd | Improvements relating to boilers utilising waste material |
| JPH06137535A (en) * | 1992-05-26 | 1994-05-17 | Takuma Co Ltd | Burner for boiler |
| CN2248290Y (en) * | 1995-12-18 | 1997-02-26 | 哈尔滨工业大学 | Biological material-burning fluidized bed boiler |
| CN200975663Y (en) * | 2006-09-05 | 2007-11-14 | 广州市优华能源技术有限公司 | Circulating fluid bed boiler by burning biomass |
| CN201066114Y (en) * | 2007-07-03 | 2008-05-28 | 无锡中正锅炉有限公司 | Boiler using biological energy as fuel |
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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Application publication date: 20100804 |