CN2903708Y - Straw direct burning boiler - Google Patents
Straw direct burning boiler Download PDFInfo
- Publication number
- CN2903708Y CN2903708Y CN 200620069997 CN200620069997U CN2903708Y CN 2903708 Y CN2903708 Y CN 2903708Y CN 200620069997 CN200620069997 CN 200620069997 CN 200620069997 U CN200620069997 U CN 200620069997U CN 2903708 Y CN2903708 Y CN 2903708Y
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- CN
- China
- Prior art keywords
- burner hearth
- superheater
- stalk
- boiler
- combustion boiler
- 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.)
- Expired - Lifetime
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Abstract
A straw direct combustion boiler belongs to a boiler in a heat power plant and steam supply in commercial manufacture or central heating in domestic heating. According to the programming of the utility model, a fire box is installed on a holdfast, the upper part of the fire box is a blast chamber, a barrel is provided on the blast chamber, a hydro-cooling vibrating-grate stoker is provided under the fire box, and water pipes are part of the fire grate, a straw feeder is installed on the front wall of the lower part of the fire box, an air flue is provided inside the fire box on the blast chamber, and a residue extraction mechanism and an ash bucket are installed under the hydro-cooling vibrating-grate stoker. The utility model disintegrates the straw, deliveries the straw to the boiler without any back-up fuel, the steam generated by the fire box can be used for electrification, steam supply and heat supply.
Description
Technical field
The utility model belongs to a kind of boiler that is used for central heating in thermal power plant and industrial production steam supply or the civil heating.
Background technology
In the thermal power plant, when industrial production or civil heating, need the steam that uses boiler to produce, the normally used fuel of boiler is fossil fuel, as coal, oil and gas etc.Fossil fuel are non-renewable primary energy, because primary energy is in short supply, price is constantly soaring, have become the common significant problem of paying close attention to of international community, will seriously restrict the sustainable development of national economy.
Improvement for the shortage of tackling primary energy and economic development, people's lives, 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 reproducible new forms of energy, this has become the only way of various countries' energy strategy development.
Stalk is the discarded object of agricultural production, and the main kind of stalk has wheat stalk, maize straw, rice straw, cotton stalk and fruit tree branch etc., is reproducible biomass energy.The peasant has not only wasted valuable resource at the field crop straw burning, goes back pollutant atmosphere.Utilize stalk to burn in boiler, the steam of generation is used for generating or steam supply, heat supply, has energy savings, reduces the social benefit of environmental pollution, and good economic benefits is also arranged.
Summary of the invention
The purpose of this utility model is to design a kind of stalk direct-combustion boiler, after crushed stalk, directly is delivered into boiler combustion, and without any need for auxiliary fuel, the steam that boiler produces can be used for generating, steam supply and heat supply.
According to design provided by the utility model, burner hearth is installed on the steelframe, the top of burner hearth is the combustion chamber, drum is installed above the combustion chamber, at the lower disposed water-cooled vibrating-grate stoker of burner hearth, and water pipe is the part of fire grate, and the stalk batcher is installed on the front wall of lower furnace portion, in the burner hearth on the combustion chamber flue is set, slag tap equipment and ash bucket of installation below the water-cooled vibrating-grate stoker.
The port of export of flue is a back-end ductwork, and economizer and air preheater are set in the back-end ductwork.Mounting platform staircase on steelframe.Between burner hearth and flue, set gradually cooling chamber and superheater chamber.Pendant superheater is installed on top in burner hearth; High temperature superheater is installed, at the indoor installation low temperature superheater of superheater in cooling chamber.The V-shaped structure of pendant superheater and high temperature superheater.The angle of water-cooled vibrating-grate stoker and level is 2～20 °.The inboard wall of burner hearth of close water-cooled vibrating-grate stoker top is the forward and backward arch of inside contraction, and arranges secondary wind at forward and backward arch place.
The utlity model has following advantage: 1, adopt the water-cooled vibrating-grate stoker, can avoid straw burning coking on grate surface, be beneficial to simultaneously and discharge after lime-ash is transported to stove.More because of alkali metal content in the lime-ash of straw burning generation, ash fusion point is low, as adopts common fire grate, grate surface temperature height, lime-ash melts on grate surface easily, easily stops up the air port on the grate surface, be unfavorable for that stalk burns, also be unfavorable for deslagging, and fire grate is also easily burnt out.And water-cooled vibrating-grate stoker face cools off because of water pipe is arranged, and the grate surface temperature is low, and lime-ash is difficult for fusing on the water-cooled grate face, also be easy to deslagging, and fire grate also is difficult for being burnt out.The angle of fire grate and level is 2～20 °.2, above fire grate, arrange suitable forward and backward arch, and arrange secondary wind at forward and backward arch place.The water-cooled vibrating-grate stoker, the combustion chamber of fire grate top, forward and backward arch and secondary air system have been formed complete combustion system, can make stalk completing combustion, has very high efficiency of combustion, 3, flue gas adopts four backhauls to flow to, and helps increasing flue gas flow, fully cooled flue gas prevents to absorb heat because of slagging scorification influences boiler.Pendant superheater is arranged in the burner hearth; High temperature superheater is arranged in the cooling chamber, the flue gas parallel baffled.Pendant superheater and high temperature superheater tube bank are screen formula " V " structure, and big transverse pitch can alleviate slagging scorification and dust stratification.And the low temperature superheater entrance flue gas temperature is lower than ash fusion point, can avoid slagging scorification in the later heating surface of low temperature superheater.4, all arrange soot blower at each heating surface place, can in time remove slagging scorification and dust stratification on the heating surface, do not influence the heat transfer of each heating surface.
Description of drawings
Fig. 1 is a structure chart of the present utility model.
The specific embodiment
As shown in the figure: 1 is drum, and 2 is fire box, and 3 is steelframe and platform staircase, 4 is superheater, and 5 is economizer, and 6 is air preheater, 7 is the stalk batcher, and 8 is the water-cooled vibrating-grate stoker, and 9 are equipment of slagging tap and ash bucket, 10 is the combustion chamber, and 11 is cooling chamber, and 12 is the superheater chamber, 13 is back-end ductwork, 14 is pendant superheater, and 15 is high temperature superheater, and 16 is low temperature superheater.
Burner hearth 2 is installed on the steelframe, the top of burner hearth 2 is combustion chamber 10, drum 1 is installed above combustion chamber 10, lower disposed water-cooled vibrating-grate stoker 8 at burner hearth 2, and water pipe is the part of fire grate, stalk batcher 7 is installed on the front wall of burner hearth 2 bottoms, in the burner hearth 2 on combustion chamber 10 flue is set, slag tap equipment and ash bucket 9 of installation below water-cooled vibrating-grate stoker 8.The port of export of flue is a back-end ductwork 13, and economizer 5 and air preheater 6 are set in the back-end ductwork 13.Mounting platform staircase 3 on support.Between burner hearth 2 and flue, set gradually cooling chamber 11 and superheater chamber 12.According to generating or steam supply, the required steam parameter situation of heat supply, pendant superheater 14 is installed on the top in burner hearth 2; High temperature superheater 15 is installed in cooling chamber 11, low temperature superheater 16 is installed in superheater chamber 12.Pendant superheater 14 and high temperature superheater 15 V-shaped structures.Water-cooled vibrating-grate stoker 8 is 2～20 ° with the angle of level.The inboard wall of burner hearth of close water-cooled vibrating-grate stoker 8 tops is the forward and backward arch of inside contraction, and arranges secondary wind at forward and backward arch place.
Boiler is four return structures, and promptly stalk is after the burner hearth internal combustion, and the flue gas of generation flow through successively burner hearth, cooling chamber, superheater chamber and back-end ductwork form four backhauls and flow to.Flue gas is four backhauls and flows in boiler, i.e. flow through successively burner hearth, cooling chamber, superheater chamber and back-end ductwork of the flue gas that produces in the burner hearth internal combustion of stalk.
Superheater 4 comprises pendant superheater 14, high temperature superheater 15 and low temperature superheater 16.When the parameter of steam is HTHP, need to arrange pendant superheater 14, high temperature superheater 15 and low temperature superheater 16; When the parameter of steam is medium temperature and medium pressure, need to arrange high temperature superheater 15 and low temperature superheater 16; And when the parameter of steam is low pressure, only need to arrange low temperature superheater 16; Saturated stove does not need to arrange superheater.Steelframe in steelframe and the platform staircase 3 is used to bear the boiler overall weight, and the platform staircase is used for boiler attendance, maintenance.
Arrange the water-cooled vibrating-grate stoker in lower furnace portion; water pipe is the part of fire grate; utilize the water cooling fire grate that flows in the water pipe; fire grate can be recepted the caloric and take away; reduced the operating temperature of fire grate; can protect fire grate not burnt out, fire grate can be because of operating temperature height, the big stuck phenomenon that occurs of swell increment, the stalk coking on grate surface that yet can avoid firing low ash smelting point.
Flue gas is four backhauls and flows to.During burning straw, because of the ash fusion point of stalk is low, easily slagging scorification on heating surface, dust stratification.Adopt flue gas four backhauls to flow to, help arranging the heating surface of the difficult formation slagging scorification of special construction.Simultaneously,, adopt flue gas parallel baffled heating surface from top to bottom, flue gas is produced from deashing, slagging-off effect in the flue-gas temperature scope of easy slagging scorification.
Conventional pendant superheater and high temperature superheater are all taked the coiled pipe structure, and steam goes to upper and lower many backhauls and flows in pipe.And the structure of pendant superheater 14 of the present utility model and high temperature superheater 15 is restrained V-shaped layout, and steam only flows for upwards making two return from top to bottom, again in pipe.This structure can effectively alleviate slagging scorification on this heating surface.
The utility model is different with the existing equipment that burns again behind the gasifying stalk that utilizes, but with after the crushed stalk, directly is delivered into boiler combustion, and without any need for auxiliary fuel, the steam that boiler produces can be used for generating, steam supply and heat supply.
Among the figure 17 is the forward and backward arch of inside contraction for inboard wall of burner hearth, and 18 is the air inlet of secondary wind.
Claims (8)
1, stalk direct-combustion boiler, burner hearth (2) is installed on the steelframe, the top of burner hearth (2) is combustion chamber (10), drum (1) is installed in the top of (10) in the combustion chamber, it is characterized in that: at the lower disposed water-cooled vibrating-grate stoker (8) of burner hearth (2), and water pipe is the part of fire grate, and stalk batcher (7) is installed on the front wall of burner hearth (2) bottom, in the burner hearth (2) on combustion chamber (10) flue is set, slag tap equipment and ash bucket (9) of installation below water-cooled vibrating-grate stoker (8).
2, stalk direct-combustion boiler as claimed in claim 1 is characterized in that: the port of export of flue is back-end ductwork (13), and economizer (5) and air preheater (6) are set in the back-end ductwork (13).
3, stalk direct-combustion boiler as claimed in claim 1 is characterized in that: mounting platform staircase (3) on steelframe.
4, stalk direct-combustion boiler as claimed in claim 1 is characterized in that: set gradually cooling chamber (11) and superheater chamber (12) between burner hearth (2) and flue.
5, stalk direct-combustion boiler as claimed in claim 4 is characterized in that: pendant superheater (14) is installed on the top in burner hearth (2); High temperature superheater (15) is installed in cooling chamber (11), low temperature superheater (16) is installed in superheater chamber (12).
6, stalk direct-combustion boiler as claimed in claim 5 is characterized in that: pendant superheater (14) and the V-shaped structure of high temperature superheater (15).
7, stalk direct-combustion boiler as claimed in claim 1 is characterized in that: water-cooled vibrating-grate stoker (8) is 2～20 ° with the angle of level.
8, stalk direct-combustion boiler as claimed in claim 1 is characterized in that: the inboard wall of burner hearth of close water-cooled vibrating-grate stoker (8) top is the forward and backward arch of inside contraction, and arranges secondary wind at forward and backward arch place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620069997 CN2903708Y (en) | 2006-03-06 | 2006-03-06 | Straw direct burning boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620069997 CN2903708Y (en) | 2006-03-06 | 2006-03-06 | Straw direct burning boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2903708Y true CN2903708Y (en) | 2007-05-23 |
Family
ID=38079122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620069997 Expired - Lifetime CN2903708Y (en) | 2006-03-06 | 2006-03-06 | Straw direct burning boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2903708Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954482A (en) * | 2011-08-18 | 2013-03-06 | 苏州市宏达集团有限公司 | Method for directly using power generation biomass fuel and device implementing method |
| CN103216810A (en) * | 2013-04-16 | 2013-07-24 | 无锡华光锅炉股份有限公司 | Water cooling wall arrangement structure of straw boiler |
| CN104359100A (en) * | 2014-11-03 | 2015-02-18 | 合肥工业大学 | Biomass combustion power generation boiler |
| CN106288362A (en) * | 2016-10-20 | 2017-01-04 | 上海工业锅炉无锡有限公司 | Brace type straw direct burning boiler |
| CN106594698A (en) * | 2016-12-30 | 2017-04-26 | 江苏东九重工股份有限公司 | Biomass direct-fired boiler |
| CN107906507A (en) * | 2017-12-29 | 2018-04-13 | 上海康恒环境股份有限公司 | A kind of main steam temperature is 540 DEG C of refuse incineration exhaust-heating boiler pendant superheater |
-
2006
- 2006-03-06 CN CN 200620069997 patent/CN2903708Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954482A (en) * | 2011-08-18 | 2013-03-06 | 苏州市宏达集团有限公司 | Method for directly using power generation biomass fuel and device implementing method |
| CN103216810A (en) * | 2013-04-16 | 2013-07-24 | 无锡华光锅炉股份有限公司 | Water cooling wall arrangement structure of straw boiler |
| CN104359100A (en) * | 2014-11-03 | 2015-02-18 | 合肥工业大学 | Biomass combustion power generation boiler |
| CN106288362A (en) * | 2016-10-20 | 2017-01-04 | 上海工业锅炉无锡有限公司 | Brace type straw direct burning boiler |
| CN106594698A (en) * | 2016-12-30 | 2017-04-26 | 江苏东九重工股份有限公司 | Biomass direct-fired boiler |
| CN107906507A (en) * | 2017-12-29 | 2018-04-13 | 上海康恒环境股份有限公司 | A kind of main steam temperature is 540 DEG C of refuse incineration exhaust-heating boiler pendant superheater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070523 |
|
| EXPY | Termination of patent right or utility model |