CN201582799U - Energy-saving boiler coal burner - Google Patents
Energy-saving boiler coal burner Download PDFInfo
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- CN201582799U CN201582799U CN2009202976338U CN200920297633U CN201582799U CN 201582799 U CN201582799 U CN 201582799U CN 2009202976338 U CN2009202976338 U CN 2009202976338U CN 200920297633 U CN200920297633 U CN 200920297633U CN 201582799 U CN201582799 U CN 201582799U
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Abstract
The utility model relates to a boiler burner, in particular to an energy-saving boiler coal burner, which is structurally characterized in that a first tail gas recovery passage is connected to a first air blower, the first air blower is communicated to a first air inlet passage, one side of a hearth is provided with an inlet, a coal feed inlet of a coal feeding device and an output of the first air inlet passage are mounted at the inlet of the hearth, a first circular grate cylinder is installed on the lower side of the hearth, a second air blower is communicated to a second air inlet passage, and an outlet of the second air inlet passage is arranged below the first circular grate cylinder. The coal burner can be adaptable to combusting various organic substance. The energy-saving boiler coal burner has the advantages of removing the original fire grate technology, adopting the circular grate cylinder, running continuously after deforming due to heat, realizing recovery of high-temperature tail gas perfectly, increasing coal burning efficiency by means of air and coal mixing combustion in the hearth, and having great effects on reducing cost, increasing working efficiency, saving resources and the like.
Description
Technical field
The utility model relates to a kind of boiler combustion device, particularly a kind of power economized boiler coal-burning installation.Coal-burning installation described in the utility model can also be applicable to combustion of various organic materials.
Background technology
A kind of boiler exhaust gas heat-energy recovering apparatus is disclosed by this patent utility model people application and the Chinese patent ZL 200820103388.8 that obtains the authorization, this technology is utilized the good heat conduction function of metal conducting strip, make up the exhaust emissions passage and the heat transfer path of a cross-distribution, combustion air heat energy when the exhaust heat-energy that boiler is produced uses as boiler again, the energy that boiler is produced can access recycling fully, also makes big contribution for energy conservation simultaneously.When implementing, because fire grate adopts belt-type yi word pattern structure, and the air themperature that reclaims is very high, when affacting the fire grate of burner hearth, may make fire grate produce distortion, causes fire grate to take place to stagnate to stop fault, further has influence on the operation of boiler.
On the other hand, in the existing coal furnace, the coal of use contains more water usually, cause the heat energy of needs also big, yet coal combustion is also incomplete, has caused very big waste on the resource.Also have, in the boiler fired coal device, usually do not consider air and coal-fired ratio, but the open air that blasts, no matter coal-fired population size, the size that blasts air is the same, when fire coal after a little while, because air capacity is excessive relatively, cause fire coal to can not get burning easily and just taken away by air stream, form a large amount of dust; When fire coal was too much, air capacity was just too small relatively, caused fire coal to can not get corresponding combustion air, caused incomplete combustion, wasted coal-fired resource, caused too much contaminated air simultaneously, was unfavorable for the environment environmental protection.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part and a kind of power economized boiler coal-burning installation that can reclaim high-temperature tail gas smoothly is provided.
The utility model is realized by following approach:
The power economized boiler coal-burning installation, include feeder and burner hearth, its structural feature is, also include down device for coal, the first tail gas recycle passage, first pressure fan, first air intake passage, second pressure fan, second air intake passage and the first circular row tube, feeder is connected and is communicated with following device for coal, the first tail gas recycle passage is connected to first pressure fan, and first pressure fan is communicated to first air intake passage; Burner hearth one side has been opened inlet, and the following coal mouth of following device for coal and the outlet of first air intake passage are installed in the porch of this burner hearth, and is communicated with this burner hearth inlet; The first circular row tube is installed on the following side of burner hearth, and second pressure fan is communicated to second air intake passage, and the outlet of second air intake passage is positioned at first circular row tube below.
Feeder provides coal dust in following device for coal, and fire coal is blown into by the air of first air intake passage and burns in the burner hearth in coal down then; The first circular row tube provides furnace high-temperature for boiler on the one hand, receives cinder on the other hand, along with rolling cinder is passed to burner hearth bottom and outside.The high temperature air that such first tail gas recycle passage is reclaimed just acts on the first circular row tube, and the first circular row tube adopts rotating drive, therefore, even the surperficial temperature distortion of row's tube, it still can rotate, and does not influence its work, also can realize utilizing completely for the high temperature air that reclaims.
The utility model adopts new circular row tube to replace traditional fire grate, solved the problem that the fire grate temperature distortion influences boiler operatiopn, can also reduce the width of burner hearth: original fire grate is yi word pattern and arranges, need occupy the suitable width of burner hearth, cause the equipment of boiler fired coal device bigger, floor space is also big; And row tube width of the present utility model only original fire grate 10% to 20%, the width of burner hearth just can reduce like this, volume also reduces, and makes heat more concentrated, can increase utilization rate of coal, and can be so that integral device reduces floor space, in addition, original fire grate needs a plurality of accessories to cooperate installation when mounted, needs cost higher, circular row tube of the present utility model then is simple and easy to dress, has reduced the cost of fire grate widely.So coal-burning installation described in the utility model have economically with practicality on great novelty.
The utility model can further be specially:
Also include the second tail gas recycle passage, it is connected to second pressure fan.
In the tail gas recycle process, fully recovery boiler tail gas of the above tail gas recycle passage one side of two-stage or two-stage is set, on the other hand, the first tail gas recycle passage is the high-temperature tail gas that reclaims just to have come out from burner hearth, therefore it is also higher to reclaim recycling air themperature, can reach 120 degree～200 degree, it is sent to burner hearth by first pressure fan and first air intake passage, supplies with the high heat energy of fired coal combustion; The second tail gas recycle passage then is to reclaim the tail gas that the first tail gas recycle passage does not utilize as yet fully, the air themperature that is reclaimed is relatively low, generally about 60 degree～80 degree, it can be sent to row's tube by second pressure fan and second air intake passage, supplies coal-fired with combustion-supporting heat energy.In addition, can also according to circumstances provide the 3rd tail gas recycle passage of the 3rd device for recovering tail gas correspondence, to improve the problem of utilizing that solves boiler exhaust gas.
The boiler fired coal device can also further be specially:
Type that burner hearth is a kind of " several " structure, the left and right sides of " several " type structure is respectively first burner hearth and second burner hearth, coal-burning installation also includes the second circular row tube, the first circular row tube is installed in the first burner hearth downside, the second circular row tube is installed in the second burner hearth downside, and second air intake passage provides an air outlet to be connected to second circular row tube below.
Under the effect of high-speed air flow, having partial fuel coal can not get burning and directly being taken away by air stream, the utility model provides a kind of chamber structure of complications, this structure can provide unburned coal-fired passage, make it also can be referred to as to burn in the burner hearth of the second level, so just can improve coal-fired utilization rate at another burner hearth, to energy savings, improving boiler for producing efficient has positive facilitation.
Following device for coal includes a plurality of coal mouths down, and these a plurality of coal mouths down are connected and are communicated with the burner hearth inlet.
When considering down coal, coal amount size is also different as required, and therefore a plurality of coal mouths down are provided, and opens one or more coal mouth down according to actual coal consumption and the following coal situation of making.Like this, just can not occur coal bottleneck down in use, cause when being badly in need of, Coal-fired capacity does not reach requirement, produces influenced.Down coal mouth all must corresponding air inlet that is provided by first air intake passage for each, also better coal and air is mixed the increase combustion front.
Also include an automaton, the signals collecting port is connected with following device for coal, and signal drives interface and is connected with second pressure fan with first pressure fan.
The automaton monitoring is the Xia Meikou of device for coal down, and according to quantity, the size of coal mouth are calculated coal amount down down, further calculate air output then according to the air-supply proportioning of following coal amount, drive interface by signal at last and drive first pressure fan and second pressure fan, change its air output, to keep the ratio balance of air and coal, reach many coals blows more, few coal is blown less, and energy savings improves fired coal combustion efficient.
Feeder includes coal bunker, air-dry machine, and coal bunker is connected with the import of air-dry machine, and the outlet of air-dry machine directly or indirectly is communicated to down in the device for coal.
Because the moisture that steam coal contains is bigger, so adopt air-dry machine to reduce the water content of coal, the action principle of described air-dry machine is the moisture that coal absorbs exhaust heat-energy evaporation coal, so air-dry machine is exactly the device that a kind of coal absorbs the moisture of exhaust heat-energy evaporation coal.
Coal dust after air-dry does not need too much heat energy and the completing combustion of second-time burning realization more than 98% when burning, the heat energy point of ignition is low, so, not only can save coal-fired heat energy, also can improve the service efficiency of coal, have excellent economy and energy-saving effect.
Feeder also includes a kind of pulverizer, and its access port is connected with the outlet of air-dry machine, and outlet then is connected and is communicated with following device for coal.
Provide coal because the wind coal that the utility model adopts mixes,, therefore need to adopt pulverizer to realize this function so guarantee that preferably the particle of most of coal is as far as possible little.The particle that reduces coal can also further improve the burning of coal rate.Pulverizer is not stopped up in the just good and air mixing of energy of the air-dry pulverizing of coal back yet.
The coal that disintegrating machine provided should comprise the coal grain of diameter 1～2cm of 10%～20%.
If the coal-fired particle that is provided is too small, then flow down at air at a high speed, coal dust may can not get burning in time and be taken out of burner hearth, cause the coal utilization rate low, and the burner hearth tail gas dust that causes is excessive, therefore needs to guarantee an amount of graininess fire coal, as the combustion-supporting fire coal of coal dust.
For guaranteeing good coal-fired effect, vertical range between the outlet of first air intake passage and the first circular row tube should be not near excessively, otherwise the heat that the coal of burning discharges may cause the undue distortion of row's tube, should be not far away excessively yet, otherwise coal enters the heat energy that can not get ignition behind the burner hearth, can't in time burn, cause waste.
The diameter of the first circular row tube and the second circular row tube is 110%～120% of a furnace width.
Fail to go out burning at air inlet as oarse-grained fire coal like this, the burning of being heated on then can the row of falling tin is for coal dust plays combustion-supporting effect.
Also include a kind of heat pipe, it is extended to the opposite side of " several " type structure by first burner hearth top.
Heat pipe is the heat collection device that provides for high-temperature burner hearth, owing to do not re-use fire grate, the burner hearth width diminishes, volume is also little, in order to collect enough burner hearth heat energy, burner hearth is carried out the curve design, and the increase heat-absorbent surface, the assimilation effect of raising burner hearth heat energy.
Boiler fired coal device described in the utility model can be realized following boiler fired coal method:
A kind of aforesaid boiler fired coal device is provided,
Coal is put into coal bunker, enter air-dry machine by coal bunker and carry out air-dry;
After air-dry, the coal dust coal cinder that mixes enters pulverizer and pulverizes, and forms coal dust, and delivers to down device for coal;
First pressure fan receives the high temperature air that the first tail gas recycle passage is sent here, and mixing air blasts first air intake passage, delivers to the burner hearth porch,
Second pressure fan receives the high temperature air that the second tail gas recycle passage is sent here, and mixing air blasts second air intake passage, delivers to the burner hearth first circular row tube and second circular row tube below, for burner hearth row tube provides high temperature heat and required combustion air;
The following coal mouth of following device for coal begins down coal, coal dust that falls and coal grain be blown under the effect of the first air intake passage wind speed the first circular row tube above;
The first circular row tube provides high heat energy in rotation, the wind coal entry position of burner hearth is higher than the peak of circular row tube, when the wind coal enters first burner hearth, and rapid ignition under the just direct effect in high temperature furnace,
Unburned coal dust coal grain is after entering second burner hearth under the effect of air stream, and the burning second time is carried out in burning above the second circular row tube, and coal just can burn fully like this;
Behind all burnt, cinder falls into row's tube, falls burner hearth bottom along with row's tube rolls; The waste gas that produces is discharged via furnace outlet.
This is a kind of coal combustion process different with conventional art: at first be to have adopted air-dry machine and pulverizer that coal is carried out preliminary treatment, improved the burning of coal rate; Next has adopted carries out the mode burning coal that the wind coal mixes in the burner hearth porch, and coal enters burner hearth by fire grate and burns in original technology; During the mixed combustion of wind coal, row tube after receiving the high temperature air that reclaims, for burner hearth provides high heat energy, can be directly with the wind coal combustion that is blown into totally, improve the usefulness of burning greatly; Selected the circular row tube for use, and abandoned original fire grate technology, the circular row tube can reduce the insied width of burner hearth, reduces volume, improves hot concentration degree, and after being influenced by heat, can not influence the progress of work, and the space of further raising is arranged for heat energy in the burner hearth.
In sum, characteristics of the present utility model are, a kind of power economized boiler coal-burning installation is provided, and original fire grate technology of having forgone adopts the circular row tube, does not still influence operation after temperature distortion, can satisfactory realization to the recycling of high temperature air; Adopt wind coal mixed combustion method in the burner hearth, improve burning of coal usefulness.Compact overall structure, complete fully to burning of coal, improved the utilization rate of coal, reduced the heat energy utilization rate of coal combustion, reducing cost, to increase work efficiency, aspect such as economize on resources has good effect.
Description of drawings
Figure 1 shows that the structural representation of boiler fired coal device described in the utility model;
Below in conjunction with embodiment the utility model is described further.
Specific embodiment
Most preferred embodiment:
With reference to accompanying drawing 1, the power economized boiler coal-burning installation, include feeder and burner hearth, following device for coal 2, the first tail gas recycle passage 31, the second tail gas recycle passage 32, first air intake passage 41, second air intake passage 42, first pressure fan 51, second pressure fan, 52, the first circular row tubes 61, the second circular row tube 62 and heat pipe 8.Feeder includes coal bunker 71, air-dry machine 72 and pulverizer 73, and coal bunker 71 is connected with the import of air-dry machine 72, and pulverizer 73 access ports are connected with the outlet of air-dry machine 72, and outlet then is connected and is communicated with following device for coal 2.
Type that burner hearth is a kind of " several " structure, the left and right sides of " several " type structure is respectively first burner hearth 11 and second burner hearth 12, heat pipe 8 is extended to the opposite side of " several " type structure, i.e. second burner hearth 12 by first burner hearth, 11 tops along the furnace wall.One side of first burner hearth 11 has been opened first inlet, and the vertical range between this entrance and the first circular row tube peak is 20% the first circular row tube diameter; The first tail gas recycle passage 31 is connected to first pressure fan, 51, the first pressure fans 51 and is communicated to first air intake passage 41; The outlet of the following device for coal 2 and first air intake passage 41 is installed in the first access point of this burner hearth, and is communicated with first inlet of this burner hearth;
The first circular row tube 61 is installed on the following side of first burner hearth, 11 inner chambers, the second circular row tube 62 is installed in the following side of second burner hearth, 12 inner chambers, and the diameter of the first circular row tube 61 and the second circular row tube 62 is 110%～120% of a corresponding burner hearth width.Second pressure fan 52 is communicated to the bottom that second air-supply passage, 42, the second air-supply passages 42 provide two paths to be connected respectively to first burner hearth 11 and second burner hearth 12, and connected entrance lays respectively at the below of the first circular row tube 61 and the second circular row tube 62.
Following device for coal 2 can include a plurality of down coal mouths, corresponding connection of a plurality of inlets and connection that these a plurality of coal mouths down and burner hearth provide.At this moment, these a plurality of down coal mouths all must air inlet that is provided by first air intake passage 41 of correspondence, and the two all is connected to the porch of burner hearth.
The signals collecting port of one automaton is connected with following device for coal, and signal drives interface and is connected with second pressure fan with first pressure fan.The automaton monitoring is the Xia Meikou of device for coal down, and according to quantity, the size of coal mouth are calculated coal amount down down, further calculate air output then according to the air-supply proportioning of following coal amount, drive interface by signal at last and drive first pressure fan and second pressure fan, change its air output, to keep the ratio balance of air and coal, reach many coals blows more, few coal is blown less, and energy savings improves fired coal combustion efficient.
The technology contents of the device for recovering tail gas of tail gas recycle passage and correspondence is referring to Chinese patent ZL200820103388.8.
Above-mentioned power economized boiler coal-burning installation provides following energy-saving coal method:
A kind of aforesaid power economized boiler coal-burning installation is provided,
Coal is put into coal bunker 71, enter air-dry machine 72 by coal bunker 71 and carry out air-dry;
After air-dry, the coal dust coal cinder that mixes enters pulverizer 73 and pulverizes, and forms the coal dust of the coal grain have diameter 1～2cm of 10%～20%, and delivers to down device for coal;
The following coal mouth of following device for coal 2 begins down coal, coal dust that falls and coal grain be blown under the effect of first air intake passage, 41 wind speed the first circular row tube 61 above;
The first circular row tube 61 provides high heat energy in rotation, when the wind coal enters first burner hearth 11, and just direct ignition rapidly under the effect of high heat energy,
Unburned coal dust coal grain is after entering second burner hearth 12 under the effect of air stream, and the burning second time is carried out in burning above the second circular row tube 62, and coal just can burn fully like this;
Behind all burnt, cinder falls into row's tube, falls burner hearth bottom along with row's tube rolls; The waste gas that produces is discharged via furnace outlet.
It is same as the prior art that the utility model is not stated part.
Claims (8)
1. power economized boiler coal-burning installation, include feeder and burner hearth, it is characterized in that, also include down device for coal (2), the first tail gas recycle passage (31), first pressure fan (51), first air intake passage (41), second pressure fan (52), second air intake passage (42) and the first circular row tube (61), feeder is connected and is communicated with following device for coal (2), the first tail gas recycle passage (31) is connected to first pressure fan (51), and first pressure fan (51) is communicated to first air intake passage (41); Burner hearth one side has been opened inlet, and the following coal mouth of following device for coal (2) and the outlet of first air intake passage (41) are installed in the porch of this burner hearth, and is communicated with this burner hearth inlet; The first circular row tube (61) is installed on the following side of burner hearth, and second pressure fan (52) is communicated to second air intake passage (42), and an outlet of second air intake passage (42) is positioned at the first circular row tube (61) below.
2. power economized boiler coal-burning installation according to claim 1 is characterized in that, also includes the second tail gas recycle passage (32), and it is connected to second pressure fan (52).
3. power economized boiler coal-burning installation according to claim 1, it is characterized in that, type that burner hearth is a kind of " several " structure, the left and right sides of " several " type structure is respectively first burner hearth (11) and second burner hearth (12), coal-burning installation also includes the second circular row tube (62), the first circular row tube (61) is installed in first burner hearth (11) downside, the second circular row tube (62) is installed in second burner hearth (12) downside, and second air intake passage (42) provides an air outlet to be connected to the second circular row tube (62) below.
4. power economized boiler coal-burning installation according to claim 1 is characterized in that, following device for coal (2) includes a plurality of coal mouths down, and these a plurality of coal mouths down are connected and are communicated with the burner hearth inlet.
5. power economized boiler coal-burning installation according to claim 2 is characterized in that, also includes an automaton, and the signals collecting port is connected with following device for coal (2), and signal drives interface and is connected with second pressure fan (52) with first pressure fan (51).
6. power economized boiler coal-burning installation according to claim 1, it is characterized in that, feeder includes coal bunker (71), air-dry machine (72), and coal bunker (71) is connected with the import of air-dry machine (72), and the outlet of air-dry machine (72) directly or indirectly is communicated in the wind coal mixing arrangement (2).
7. power economized boiler coal-burning installation according to claim 6 is characterized in that, feeder also includes a kind of pulverizer (73), and its access port is connected with the outlet of air-dry machine (72), and outlet then is connected and is communicated with wind coal mixing arrangement (2).
8. power economized boiler coal-burning installation according to claim 7 is characterized in that, the coal that disintegrating machine provided comprises the coal grain of diameter 1～2cm of 10%～20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202976338U CN201582799U (en) | 2009-12-11 | 2009-12-11 | Energy-saving boiler coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202976338U CN201582799U (en) | 2009-12-11 | 2009-12-11 | Energy-saving boiler coal burner |
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| Publication Number | Publication Date |
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| CN201582799U true CN201582799U (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202976338U Expired - Fee Related CN201582799U (en) | 2009-12-11 | 2009-12-11 | Energy-saving boiler coal burner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986026A (en) * | 2010-11-29 | 2011-03-16 | 温金龙 | Step gravity type combustion boiler and combustion method thereof |
| CN101915417B (en) * | 2009-12-11 | 2012-11-14 | 温金龙 | Coal combustion device of energy-saving boiler and coal combustion method thereof |
-
2009
- 2009-12-11 CN CN2009202976338U patent/CN201582799U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915417B (en) * | 2009-12-11 | 2012-11-14 | 温金龙 | Coal combustion device of energy-saving boiler and coal combustion method thereof |
| CN101986026A (en) * | 2010-11-29 | 2011-03-16 | 温金龙 | Step gravity type combustion boiler and combustion method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20111211 |