CN201180983Y - Self-adapting ignition combustion device of monotube boiler - Google Patents
Self-adapting ignition combustion device of monotube boiler Download PDFInfo
- Publication number
- CN201180983Y CN201180983Y CNU2007201251835U CN200720125183U CN201180983Y CN 201180983 Y CN201180983 Y CN 201180983Y CN U2007201251835 U CNU2007201251835 U CN U2007201251835U CN 200720125183 U CN200720125183 U CN 200720125183U CN 201180983 Y CN201180983 Y CN 201180983Y
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- wind
- coal
- airduct
- outlet
- burner
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Abstract
The utility model discloses a self-adapting ignition and combustion device of a monotube boiler. A main coal pulverizer of the device is communicated with a main primary wind pipe through a fine coal pipe. The device is characterized in that the inlet of an external primary wind pipe is connected with the main primary wind pipe; an auxiliary coal pulverizer is arranged in parallel with the main coal pulverizer; the outlet of the auxiliary coal pulverizer is connected with an auxiliary primary wind pipe through a superfine coal pipe; the outlet of the auxiliary primary wind pipe is communicated with an internal primary wind pipe of a burner; the primary wind pipe is further connected with a fine coal pipe branch, which is communicated with the primary wind pipe; the auxiliary primary wind pipe is further connected with a superfine coal pipe branch and communicated with the main primary wind pipe; a control valve a is mounted on the superfine coal pipe branch; and a control valve b is mounted on the superfine coal pipe branch. The device has a simple structure, realizes separated combustion of coarse coal powder and fine coal powder, greatly enhances the stability of the boiler in ignition and low-load operation, saves fuel, reduces the cost for electricity generation, and also has the advantages of coking prevention and wide coal type adaptability.
Description
Technical field
The utility model belongs to thermal power generation ignition device technique field, specifically, is a kind of DC boiler self-adaptive ignition combustion device that is used for the power plant boiler igniting.
Background technology
The oil consumption rich and influential family that acts as a fuel of thermal power plant will consume great amount of fuel oil its every year and be used for ignition of the boiler and steady combustion.Show that according to Committee of Development and Reform's data the annual oil consumption of China's generating set is amounted to 41,800,000,000 yuan of RMB up to 7,600,000 tons.And China is an oil-poor country, and the oil consumption amount was 3.17 hundred million tons in 2004, and the domestic production amount is 1.76 hundred million tons, and the net importation amount is 1.51 hundred million tons, and externally interdependency reaches 47.3%.Therefore it is all significant for reducing cost of electricity-generating, raising electricity power enterprise's economic benefit and Chinese energy safety strategy to reduce the generating oil consumption.
Country had started Medium-and Long-Term Plan for Conserving Energy Resources in 2005, had proposed the Eleventh Five-Year Plan period to save and the objective of the struggle of 3,800 ten thousand tons in alternative oil.Be to reduce cost of electricity-generating, realize the fuel-economizing target, develop and novel fuel-economizing ignition of the boiler combustion technology is installed has become the most urgent demand of power plant.The ignition device of the most of coal-burning power plant of present China, mainly comprise main coal pulverizer, airduct, burner and a burner hearth, the delivery outlet of coal pulverizer communicates with a described airduct through the fine powder pipe, the outlet of an airduct links to each other with burner, burner is positioned at the bottom of described burner hearth, described burner is made up of an outer airduct and oil gun, and wherein oil gun is positioned on the main shaft of an outer airduct, and the nozzle of oil gun is near the outlet of an outer airduct; Outer wind tube outlet section inwall near the oil gun nozzle is provided with a circle boss as pulverized coal concentrator again.At the igniting initial stage, oil gun sprays into great amount of fuel oil to burner hearth, oil by burning heating a period of time after, coal dust is through the outlet ejection of airduct, the outer airduct of burner, coal dust burns in that this outlet is outer, after coal dust firing is stablized, turns off the oil gun oil circuit.
But the general deviation of ature of coal of China's power station fire coal, ature of coal fluctuation are big.Coal dust is thick excessively, is difficult to realize fully burning at the igniting initial stage, needs to consume a large amount of fuel oils, and fuel consumption is significantly risen; Coal dust is meticulous, and near heating surface coking reaching in burner easily influences boiler thermal output, and serious situation also can cause the heating surface booster, impacts to safe operation of power plant.
The shortcoming of existing direct current cooker burner: when boiler of power plant ignition initial stage and underrun, combustion instability, fuel consumption is big; During stable operation of the boiler, near the interior and easy coking of heating surface of outlet of burner.
The utility model content
Problem at the prior art existence, the purpose of this utility model is to provide a kind of can realize the segregated combustion of thickness coal dust, can when ignition initial stage and underrun, save fuel oil, again can be when stable operation of the boiler anti-coking, reduce the direct current cooker few-oil ignition combustion device of thermal power generation cost.
For achieving the above object, the technical solution of the utility model is as follows: a kind of DC boiler self-adaptive ignition combustion device, comprise main coal pulverizer, the wind person in charge, burner and a burner hearth, main coal pulverizer is responsible for a described wind through the fine powder pipe and is communicated, a wind person in charge's outlet is connected with described burner, this burner is positioned at the bottom of described burner hearth, its key is: described burner is made up of an outer airduct, an interior airduct and oil gun, wherein oil gun is positioned on the main shaft of an airduct, and the nozzle of oil gun is near the outlet of an interior airduct; An interior airduct is positioned on the main shaft of an outer airduct, and the outlet of an interior airduct is near the outlet of an outer airduct, and the import of this outer airduct connects a described wind and is responsible for;
Be set side by side with secondary coal pulverizer with described main coal pulverizer, the delivery outlet of this pair coal pulverizer is connected with the wind looped pipeline one time through ultra-fine tube cell, and the outlet of this wind looped pipeline communicates with the import of a described interior airduct; Described oil gun passes a wind looped pipeline and a wind is responsible for, and the oil gun afterbody is connected with oil pipe;
The described wind person in charge also is connected with the fine powder arm and communicates with a described wind looped pipeline, a described wind looped pipeline also is connected with the superfine powder arm and communicates with the described wind person in charge, and the described fine powder arm and a wind person in charge's link is positioned at the superfine powder arm and a wind person in charge's link front, and the link of a fine powder arm and a wind looped pipeline is positioned at the link back of a superfine powder arm and a wind looped pipeline; Be equipped with on the described fine powder arm on control valve, the superfine powder arm control valve is installed, be equipped with on the wind person in charge between the link that link that fine powder arm and wind are responsible for and superfine powder arm and wind are responsible on the wind looped pipeline between the link of the link of control valve, fine powder arm and a wind looped pipeline and a superfine powder arm and a wind looped pipeline control valve is installed.
According to boiler operatiopn operating mode difference, fine breeze that main coal pulverizer and secondary coal pulverizer grind out and microfine coal are respectively through the interior airduct of burner, an outer airduct sprays into the burner hearth burning, realize the self-adaptive ignition combustion function, specific practice is: boiler is at ignition trigger, underrun, during the ature of coal deviation, control valve on control valve on the fine powder arm and the superfine powder arm is closed, control valve on control valve on wind is responsible for and the wind looped pipeline is opened, fine breeze and microfine coal are responsible for and a wind looped pipeline through a wind respectively, then respectively from the outer airduct of burner, interior airduct sprays into burner hearth, help igniting and smooth combustion, effectively reduce igniting and stable combustion oil, saved fuel oil; Behind flameholding, control valve on control valve on wind is responsible for and the wind looped pipeline is closed, control valve on control valve on the fine powder arm and the superfine powder arm is opened, fine breeze and microfine coal are respectively through fine powder arm and superfine powder arm, spray into burner hearth from an interior airduct and an outer airduct respectively then, and then the postponement coal powder ignition, prevent in the burner and near heating surface coking.
Described burner hearth also is connected with secondary air channel, and the outlet of this secondary air channel is positioned at described burner top.
Described wind is responsible for, the import of wind looped pipeline and secondary air channel is equipped with blower fan and communicates with atmosphere.
Secondary air channel is sent into oxygen in burner hearth, promote the abundant burning of coal dust in the burner hearth.
The inwall at an interior wind tube outlet place of close described oil gun nozzle is provided with a circle boss.
Boss carries out deep or light separation as pulverized coal concentrator with the coal dust in the interior airduct, makes thick coal culm concentrate on the central area burning of an outer wind tube outlet, is easy to coal powder ignition and smooth combustion.
Beneficial effect: of the present utility model simple in structure, can realize the segregated combustion of thickness coal dust, improved the stability of ignition of the boiler and underrun greatly, when ignition initial stage and underrun, save fuel oil, when stable operation of the boiler anti-coking, reduce the thermal power generation cost, have characteristics such as coal adaptability is wide, can be according to coal and service condition, realize fuel-economizing igniting and steady combustion, optimize burning etc., can self adaptation few-oil ignition and smooth combustion.
Description of drawings
Fig. 1 is a system schematic of the present utility model;
Fig. 2 is the structural representation of burner.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As Fig. 1, shown in 2, a kind of DC boiler self-adaptive ignition combustion device, by main coal pulverizer 1, secondary coal pulverizer 1 ', one time wind is responsible for 2, a wind looped pipeline 2 ', burner 11, burner hearth 4, fine powder pipe 5, fine powder arm 5 ', ultra-fine tube cell 6 and superfine powder arm 6 ' are formed, wherein main coal pulverizer 1 is responsible for 2 through fine powder pipe 5 with a described wind and is communicated, a wind person in charge's 2 outlet is connected with described burner 11, this burner 11 is positioned at the bottom of described burner hearth 4, described burner 11 is by an outer airduct 12, an interior airduct 12 ' and oil gun 3 are formed, wherein oil gun 3 is positioned on the main shaft of an airduct 12 ', and the nozzle of oil gun 3 is near the outlet of an interior airduct 12 '; An interior airduct 12 ' is positioned on the main shaft of an outer airduct 12, and the outlet of an interior airduct 12 ' is near the outlet of an outer airduct 12, and the import of this outer airduct 12 connects a described wind and is responsible for 2;
Be set side by side with secondary coal pulverizer 1 ' with described main coal pulverizer 1, the delivery outlet of this pair coal pulverizer 1 ' is connected with wind looped pipeline 2 ' one time through ultra-fine tube cell 6, and the outlet of this wind looped pipeline 2 ' communicates with the import of a described interior airduct 12 '; Described oil gun 3 passes a wind looped pipeline 2 ' and a wind is responsible for 2, and oil gun 3 afterbodys are connected with oil pipe 13;
The described wind person in charge 2 also is connected with fine powder arm 5 ' and communicates with a described wind looped pipeline 2 ', a described wind looped pipeline 2 ' also is connected with superfine powder arm 6 ' and communicates with the described wind person in charge 2, and the described fine powder arm 5 ' and a wind person in charge's 2 link m is positioned at superfine powder arm 6 ' and a wind is responsible for 2 link m ' front, and the link n of a fine powder arm 5 ' and a wind looped pipeline 2 ' is positioned at the link n ' back of a superfine powder arm 6 ' and a wind looped pipeline 2 '; Be equipped with on the described fine powder arm 5 ' on control valve a, the superfine powder arm 6 ' control valve b is installed, and wind between the described m-m ' is responsible on the wind looped pipeline 2 ' that is equipped with on 2 between control valve c, the described n-n ' control valve d is installed.
According to boiler operatiopn operating mode difference, fine breeze that main coal pulverizer 1 and secondary coal pulverizer 1 ' grind out and microfine coal are respectively through the interior airduct 12 ' of burner 11, an outer airduct 12 sprays into the burner hearth burning, realize the self-adaptive ignition combustion function, specific practice is: boiler is at ignition trigger, underrun, during the ature of coal deviation, control valve a and control valve b close, control valve c and control valve d open, fine breeze and microfine coal are responsible for 2 and wind looped pipelines 2 ' through a wind respectively, then respectively from the outer airduct 12 of burner, interior airduct 12 ' sprays into burner hearth 4, help igniting and smooth combustion, effectively reduce igniting and stable combustion oil, saved fuel oil; Behind flameholding, control valve c and control valve d close, control valve a and control valve b open, fine breeze and microfine coal are respectively through fine powder arm 5 ' and superfine powder arm 6 ', spray into burner hearth 4 from an interior airduct 12 ' and an outer airduct 12 respectively then, and then the postponement coal powder ignition, prevent in the burner and near heating surface coking.
Described burner hearth 4 also is connected with secondary air channel 9, and the outlet of this secondary air channel 9 is positioned at described burner 11 tops.
The import of the described wind person in charge 2, wind looped pipelines 2 ' and secondary air channel 9 is equipped with blower fan and communicates with atmosphere.
Secondary air channel 9 is sent into oxygen in burner hearth 4, promote the abundant burning of coal dust in the burner hearth 4.
The inwall in interior airduct a 12 ' exit of close described oil gun 3 nozzles is provided with a circle boss 10.
Boss 10 carries out deep or light separation as pulverized coal concentrator with the coal dust in the interior airduct 12 ', makes thick coal culm concentrate on the central area burning of an outer airduct 12 outlets, is easy to coal powder ignition and smooth combustion.
Its operation principle is: boiler is when ignition trigger, underrun, ature of coal deviation, turn-off control valve a and control valve b, open control valve c and control valve d, fine breeze and microfine coal spray into burner hearth by an outer airduct 12 of burner, an interior airduct 12 ' respectively; Behind the flameholding, open control valve a and control valve b, turn-off control valve c and control valve d, fine breeze and microfine coal spray into burner hearth by an interior airduct 12 ' of burner, an outer airduct 12 respectively.
Claims (3)
1, a kind of DC boiler self-adaptive ignition combustion device, comprise main coal pulverizer (1), one time wind is responsible for (2), burner (11) and burner hearth (4), main coal pulverizer (1) is responsible for (2) through fine powder pipe (5) with a described wind and is communicated, a wind person in charge's (2) outlet is connected with described burner (11), this burner (11) is positioned at the bottom of described burner hearth (4), it is characterized in that: described burner (11) is by an outer airduct (12), an interior airduct (12 ') and oil gun (3) are formed, wherein oil gun (3) is positioned on the main shaft of an airduct (12 '), and the nozzle of oil gun (3) is near the outlet of an interior airduct (12 '); An interior airduct (12 ') is positioned on the main shaft of an outer airduct (12), and the outlet of an interior airduct (12 ') is near the outlet of an outer airduct (12), and the import of this outer airduct (12) connects a described wind and is responsible for (2);
Be set side by side with secondary coal pulverizer (1 ') with described main coal pulverizer (1), the delivery outlet of this pair coal pulverizer (1 ') is connected with a wind looped pipeline (2 ') through ultra-fine tube cell (6), and the outlet of this wind looped pipeline (2 ') communicates with the import of a described interior airduct (12 '); Described oil gun (3) passes a wind looped pipeline (2 ') and a wind is responsible for (2), and oil gun (3) afterbody is connected with oil pipe (13);
The described wind person in charge (2) also is connected with fine powder arm (5 ') and communicates with a described wind looped pipeline (2 '), a described wind looped pipeline (2 ') also is connected with superfine powder arm (6 ') and communicates with the described wind person in charge (2), and the link (m) that described fine powder arm (5 ') and wind are responsible for (2) is positioned at superfine powder arm (6 ') and wind and is responsible for the link of (2) (m ') front, and the link (n) of fine powder arm (5 ') and a wind looped pipeline (2 ') is positioned at link (the n ') back of superfine powder arm (6 ') and a wind looped pipeline (2 '); Be equipped with on the described fine powder arm (5 ') control valve (b) is installed on control valve (a), the superfine powder arm (6 '), a wind between and described (m)-(m ') is responsible on the wind looped pipeline (2 ') that is equipped with on (2) between control valve (c), described (n)-(n ') control valve (d) is installed.
2, according to the described DC boiler self-adaptive ignition combustion device of claim 1, it is characterized in that: described burner hearth (4) also is connected with secondary air channel (9), and the outlet of this secondary air channel (9) is positioned at described burner (11) top.
3, according to the described DC boiler self-adaptive ignition combustion device of claim 1, it is characterized in that: the inwall in an interior airduct (the 12 ') exit of close described oil gun (3) nozzle is provided with a circle boss (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201251835U CN201180983Y (en) | 2007-09-10 | 2007-09-10 | Self-adapting ignition combustion device of monotube boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201251835U CN201180983Y (en) | 2007-09-10 | 2007-09-10 | Self-adapting ignition combustion device of monotube boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201180983Y true CN201180983Y (en) | 2009-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201251835U Expired - Lifetime CN201180983Y (en) | 2007-09-10 | 2007-09-10 | Self-adapting ignition combustion device of monotube boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201180983Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101122386B (en) * | 2007-09-10 | 2011-07-20 | 中电投远达环保工程有限公司 | DC boiler self-adaptive ignition combustion system |
| CN103047671A (en) * | 2012-12-28 | 2013-04-17 | 北京哈宜节能环保科技开发有限公司 | Sandwich wind combustion device |
| CN107606603A (en) * | 2017-10-09 | 2018-01-19 | 上海锅炉厂有限公司 | A kind of combustion system for the combustion of pulverized-coal fired boiler ultra-low load steady |
-
2007
- 2007-09-10 CN CNU2007201251835U patent/CN201180983Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101122386B (en) * | 2007-09-10 | 2011-07-20 | 中电投远达环保工程有限公司 | DC boiler self-adaptive ignition combustion system |
| CN103047671A (en) * | 2012-12-28 | 2013-04-17 | 北京哈宜节能环保科技开发有限公司 | Sandwich wind combustion device |
| CN107606603A (en) * | 2017-10-09 | 2018-01-19 | 上海锅炉厂有限公司 | A kind of combustion system for the combustion of pulverized-coal fired boiler ultra-low load steady |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090114 Effective date of abandoning: 20070910 |