CN100443802C - Method for feeding coal from bottom to up of coal firing boiler, coal feeding device and boiler - Google Patents
Method for feeding coal from bottom to up of coal firing boiler, coal feeding device and boiler Download PDFInfo
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- CN100443802C CN100443802C CNB2005100801513A CN200510080151A CN100443802C CN 100443802 C CN100443802 C CN 100443802C CN B2005100801513 A CNB2005100801513 A CN B2005100801513A CN 200510080151 A CN200510080151 A CN 200510080151A CN 100443802 C CN100443802 C CN 100443802C
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- coal
- boiler
- bucket
- fire grate
- supply apparatus
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Abstract
A method of feeding coal from the bottom of a coal-fired boiler to top consists in: feeding the coal from the bottom to top into a high-temp. combustion area in the boiler via a coal feeder. The coal feeder for carrying out the above method disposed under the boiler grate includes a power unit, a conveyor mechanism and input and output buckets connected at two ends of the transport mechanism separately. The power unit is connected with the transport mechanism.
Description
Technical field
The present invention relates to a kind of method of the bottom to up of coal firing from coal-burning boiler, implement the employed coal supply apparatus of this method, and the coal-burning boiler that this coal supply apparatus is installed.
Background technology
Since coal was found by the mankind, its combustion method was continued to use the method for making a fire of " coal-feeding on fire, prosperous take prosperous " always.Because the coal in the burner hearth is deposited on the fire bars (fire grate), the coal seam that combustion-supporting air passes fire bars from bottom to top and burning, discharge from flue after passing the space of burner hearth top, in this course, the whereabouts of diffusing coal and thermal current upper punch form cold and hot convection current and produce whirlwind in burner hearth, the coal dust (black smoke of kicking up, be the ashes in the coal), the thermal current that granule in the coal (ashes) is risen is rapidly carried secretly, and not burned just being brought in the flue discharged billowing black smoke from chimney.When coal cinder burns in addition, must when division, also can produce the black smoke that does not have clean-burning little carbon granule to form and be discharged from through being heated, dividing, burning three processes.More than the combustible species formed of two aspects, its quality accounts for 30% of coal total amount, the high ash powder coal accounts for 30-40%.Therefore, traditional combustion system has been wasted a large amount of coal resources, serious pollutant atmosphere.In recent decades, though on medium-sized boiler, adopt chain-type to advance the coal combustion method,, the control of black smoke (it is insufficient to burn) is failed to play basic effect.
Summary of the invention
The purpose of this invention is to provide a kind of bottom to up of coal firing from coal-burning boiler method, implement employed coal supply apparatus of this method and boiler, to solve energy waste that the traditional combustion method causes and the serious air pollution problems inherent of bringing to environment.
Technical scheme of the present invention is: from bottom to up fire coal is pressed into high temperature combustion zone in the boiler from the boiler bottom surface by a coal supply apparatus.
Comprise power set, conveying mechanism, input bucket and output bucket, power set and conveying mechanism are in transmission connection, and input bucket and output bucket are connected to the two ends of conveying mechanism, and the outlet of this output bucket is following corresponding with described fire grate.
Described conveying mechanism is made of cylindrical shell and screw auger, and the axle rotational support at screw auger two ends is at the two ends of housing, and wherein an end passes housing and is connected with described power set; Described input bucket is connected this housing end adjacent with power set, and the output bucket is connected the other end of this housing.
Described power set are made up of motor and speed changer, and the axle of motor is connected with the power shaft of speed changer, and the output shaft of speed changer is connected with the screw-conveyer-shaft of conveying mechanism.
Below described fire grate, be provided with described coal supply apparatus.
Described fire grate is a plain grate, middle part at this fire grate is provided with coal filling hole, corresponding or the connection of the output bucket of the following and described coal supply apparatus of this coal filling hole utilizes coal supply apparatus that fire coal upwards is pressed into the coal filling hole of fire grate from the output bucket, and enters the high temperature combustion zone of burner hearth from bottom to top.
Described fire grate is chain row, the chain row group of two symmetric arrangement is drawn together in this chain package, each chain row group is supported for triangle by three support wheels, each leg-of-mutton a pair of corresponding sides constitutes the conveying combustion zone of " eight " font, the output bucket of described coal supply apparatus is located in the mouth of bottom of described conveying combustion zone, coal-fired upwards overflow and upwards enters the high temperature combustion zone burning that heats up gradually with the inclined-plane that two groups of chains that both sides are adjacent are arranged from this output bucket.
Above described fire grate, be provided with catalytic bed.
The present invention has changed traditional coal-adding type, the coal-fired high-temperature region that is pressed into burner hearth from bottom to up gradually, the fire coal burning that heats up gradually, the little carbon granule that produces in fine breeze that can burn originally and the combustion process, utilize burning fully with the most simple and easy to do method and simple coal supply apparatus, thereby significantly reduced the operating cost of energy resource consumption and boiler, reduced the pollution of coal-burning boiler, kiln discharging black smoke in a large number atmosphere.
Description of drawings
The invention will be further described below in conjunction with embodiment and accompanying drawing.
Fig. 1 is the general structure schematic diagram of plain grate boiler embodiment of the present invention;
Fig. 2 is the general structure schematic diagram of chain row boiler embodiment of the present invention.
The specific embodiment
Referring to Fig. 1, plain grate boiler embodiment of the present invention is the most traditional structure, form by body of heater 1 and fire grate 3, be provided with coal filling hole 4 at the middle part of fire grate 3, corresponding or the connection of the upper port of the output bucket 5 of the following and coal supply apparatus of this coal filling hole 4, utilize coal supply apparatus that fire coal upwards is pressed into the coal filling hole 4 of fire grate from the output bucket, and enter the high temperature combustion zone 2 of burner hearth from bottom to top.
Described coal supply apparatus comprises power set (being made up of motor 9 and speed changer 8), conveying mechanism 6 (being made of cylindrical shell 61 and screw auger 62), input bucket 7 and output bucket 5, the axle of motor 9 is connected with the power shaft of speed changer 8, and the output shaft of speed changer 8 is connected with the axle of the auger of conveying mechanism 62.Input bucket 7 and output bucket 5 are connected to the two ends of housing 61.The axle rotational support at screw auger 62 two ends of described conveying mechanism 6 is at the two ends of housing 61, and wherein an end passes housing 61 and is connected with the axle of the motor 9 of described power set; Described input bucket 7 is connected this housing 61 end adjacent with power set, and output bucket 5 is connected the other end of this housing 61.
The course of work of this embodiment: by the transferring power of conveying mechanism 6, with fire coal slowly the parallel output bucket 5 below the coal filling hole 4 of fire grate 3 upwards eject, just burning and reaching the coal fire heap of optimal combustion state in the four sides, forming above the coal filling hole 4 up to the high temperature combustion zone more than 1000 ℃ 2, from add the coal seam height that coal bunker 5 ejects at every turn, be about 1/3 of the dump height that just burning in the stove, the coal that newly ejects, in heating, the little carbon granule (black smoke) that discharges earlier in the fission process, in the process of moving upward, burnt rapidly by high-temperature region, top 2, when waiting to pass the high-temperature region, the little carbon granule (black smoke) more than 90% is fully burnt.The coal that newly ejects is in heating, division, just the combustion process finishes, and during no black smoke release, conveying mechanism 6 enters the fire coal of optimal combustion state by upwards ejecting new coal, is distributed to around the burner hearth with stove and accessory by furnaceman.The speed of coal can also can manually be controlled by automatic temperature control system and the chain control of mechanical type according to fire box temperature and heat demand.
Referring to Fig. 2, the chain row group of two symmetric arrangement is drawn together in the package of this chain row boiler embodiment chain, each chain row organizes 11 and is supported for triangle by three support wheels 12, each leg-of-mutton a pair of corresponding sides constitute fall " eight " font the conveying combustion zone (below be middle warm area 14, above it high-temperature region 15), the output bucket 5 of coal supply apparatus (identical with the formation of the embodiment of Fig. 1) is located in the mouth of bottom of described conveying combustion zone, coal-fired upwards overflow and two groups of chains rows' being adjacent with both sides inclined-plane 16 upwards enters high temperature combustion zone 15, heat up gradually and burn from this output bucket 5.The black smoke that produces in combustion process upwards enters high-temperature region 15, fully burnt, and the catalytic bed 10 by being provided with on top, high-temperature region, further oxidation under the effect of catalyst, little carbon granule of burning residue and carbon monoxide pernicious gas, progressively enter the smokeless combustion stage, move horizontally, the coal horizontal movement is to the burner hearth both sides, the energy after-flame, become cinder,, fall into the slag hole with fire bars row upset.
Coal method and apparatus of the present invention can supportingly be retrofitted in new boiler, kiln and domestic briquet stove or transformation coal-burning boiler, kiln just in use, can significantly save coal consumption, and coal saving rate can reach 20-30%, and reduces soot emissions significantly and pollute.
Conveying mechanism 6 of the present invention also can adopt piston type or other structure except above-mentioned screw auger formula structure, its power set also can adopt hydraulic pressure and other power.
Claims (2)
1. method from the bottom to up of coal firing of coal-burning boiler, from bottom to up fire coal is pressed into high temperature combustion zone in the boiler from the boiler bottom surface by a coal supply apparatus, described boiler comprises body of heater and fire grate, be provided with described coal supply apparatus below described fire grate, described fire grate is a plain grate; Described coal supply apparatus comprises power set, conveying mechanism, input bucket and output bucket, and power set and conveying mechanism are in transmission connection, and input bucket and output bucket are connected to the two ends of conveying mechanism, and the outlet of this output bucket is following corresponding with described fire grate; Described conveying mechanism is made of cylindrical shell and screw auger, and the axle rotational support at screw auger two ends is at the two ends of housing, and wherein an end passes housing and is connected with described power set; Described input bucket is connected this housing end adjacent with power set, and the output bucket is connected the other end of this housing; Described power set are made up of motor and speed changer, the axle of motor is connected with the power shaft of speed changer, the output shaft of speed changer is connected with the screw-conveyer-shaft of conveying mechanism, it is characterized in that: the middle part at described fire grate is provided with coal filling hole, corresponding or the connection of the output bucket of the following and described coal supply apparatus of this coal filling hole, utilize coal supply apparatus fire coal upwards to be pressed into the coal filling hole of fire grate from the output bucket, and enter the high temperature combustion zone of burner hearth from bottom to top, described fire grate is chain row, the chain row group of two symmetric arrangement is drawn together in this chain package, each chain row group is supported for triangle by three support wheels, each leg-of-mutton a pair of corresponding sides constitutes the conveying combustion zone of " eight " font, the output bucket of described coal supply apparatus is located in the mouth of bottom of described high temperature combustion zone, coal-fired upwards overflow and upwards enters the high temperature combustion zone burning that heats up gradually with the inclined-plane that two groups of chains that both sides are adjacent are arranged from this output bucket.
2. the method for the bottom to up of coal firing from coal-burning boiler according to claim 1 is characterized in that: be provided with catalytic bed above described fire grate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100801513A CN100443802C (en) | 2005-06-30 | 2005-06-30 | Method for feeding coal from bottom to up of coal firing boiler, coal feeding device and boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100801513A CN100443802C (en) | 2005-06-30 | 2005-06-30 | Method for feeding coal from bottom to up of coal firing boiler, coal feeding device and boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1888539A CN1888539A (en) | 2007-01-03 |
| CN100443802C true CN100443802C (en) | 2008-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100801513A Expired - Fee Related CN100443802C (en) | 2005-06-30 | 2005-06-30 | Method for feeding coal from bottom to up of coal firing boiler, coal feeding device and boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100443802C (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2105000U (en) * | 1991-08-17 | 1992-05-20 | 陕西省渭南市燃烧设备厂 | Burner feeding coal in low position and its feeding apparatus |
| CN2416359Y (en) * | 2000-04-12 | 2001-01-24 | 杨明 | Smoke prevention and dust control combustion apparatus |
| CN2424380Y (en) * | 2000-06-06 | 2001-03-21 | 河南黎明重工有限公司 | Smokeless coal feeding machine |
| JP2002221307A (en) * | 2001-01-22 | 2002-08-09 | Maejima Fumio | Object-to-be-incinerated transferring type incinerator |
| CN2816613Y (en) * | 2005-06-30 | 2006-09-13 | 哈尔滨安龙迪环保科技有限公司 | Device for feeding coal upwards from coal-burning boiler bottom and boiler mounted with same |
-
2005
- 2005-06-30 CN CNB2005100801513A patent/CN100443802C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2105000U (en) * | 1991-08-17 | 1992-05-20 | 陕西省渭南市燃烧设备厂 | Burner feeding coal in low position and its feeding apparatus |
| CN2416359Y (en) * | 2000-04-12 | 2001-01-24 | 杨明 | Smoke prevention and dust control combustion apparatus |
| CN2424380Y (en) * | 2000-06-06 | 2001-03-21 | 河南黎明重工有限公司 | Smokeless coal feeding machine |
| JP2002221307A (en) * | 2001-01-22 | 2002-08-09 | Maejima Fumio | Object-to-be-incinerated transferring type incinerator |
| CN2816613Y (en) * | 2005-06-30 | 2006-09-13 | 哈尔滨安龙迪环保科技有限公司 | Device for feeding coal upwards from coal-burning boiler bottom and boiler mounted with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1888539A (en) | 2007-01-03 |
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Granted publication date: 20081217 Termination date: 20120630 |