CN104728837A - Industrial boiler swirling flow micro-oil pulverized coal burner - Google Patents
Industrial boiler swirling flow micro-oil pulverized coal burner Download PDFInfo
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- CN104728837A CN104728837A CN201510155494.5A CN201510155494A CN104728837A CN 104728837 A CN104728837 A CN 104728837A CN 201510155494 A CN201510155494 A CN 201510155494A CN 104728837 A CN104728837 A CN 104728837A
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- Prior art keywords
- air
- oil
- micro
- primary
- industrial boiler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2207/00—Ignition devices associated with burner
Abstract
The invention discloses an industrial boiler swirling flow micro-oil pulverized coal burner. The coal burner comprises a micro-oil burning device, a primary air duct, an inner secondary air device, an outer secondary air device and an air box. The axis of the primary air duct, the axis of the inner secondary air device, the axis of the outer secondary air device and the axis of the air box coincide with one another. The inner secondary air device is arranged on the outer side of the primary air duct, the outer secondary air device is arranged on the outer side of the inner secondary air device, and the primary air duct, the inner secondary air device and the outer secondary air device are all arranged in the air box. Pulverized coal can be conveniently burnt with little consumption of oil, and high economic benefits are achieved. The pulverized coal burner is simple in structure, low in maintenance cost, high in burning temperature and capable of burning various kinds of coal and has wide coal kind application range.
Description
Technical field
The invention discloses and a kind ofly impel the micro-oil combustion device of the Industrial Boiler of coal dust rotary combustion, be specifically related to the burner that can realize the micro-oil mass ignition of Industrial Boiler and low nitrogen burning.
Background technology
On November 6th, 2014, seven ministries and commissions such as National Energy Board, National Development and Reform Committee, Chinese Ministry of Environmental Protection combine issue " coal-burning boiler energy-saving Environmental-protection comprehensive promotes engineering construction scheme ", be planned for 2018, promote efficient boiler 500,000 tons, eliminate and fall behind coal-burning boiler 400,000 tons, improve coal-burned industrial boiler efficiency of operation 6 percentage points.Plan saving 4,000 ten thousand tons of standard coals.Raising coal-burned industrial boiler efficiency of combustion and fuel consume become the task of top priority of Industrial Boiler industry.In recent years, power industry has carried out a large amount of technological improvement to station boiler conventional ignition mode, has occurred as devices such as plasma, Gasifying Small Oil Gun, two strong burners.But due to reasons such as its inherent mechanisms, all there is certain limitation in actual applications in above-mentioned each device.
As plasma burner: once invest high, Suitability of Coals is poor, and power consumption is high, service life, the shortcomings such as system complex and maintenance cost height.
As Small Gasified Oil Guns Burners: burner output is little, ignition energy is low, is applicable to high-quality coal.
As two strong burner: system complex, fuel consumption is large, invests high.
In sum, this type of technology is applicable to the power industry boiler of Large Copacity high parameter, there is great limitation in using in Industrial Boiler.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of Industrial Boiler cyclone micro-oil coal powder burner.
Technical scheme: for solving the problems of the technologies described above, a kind of Industrial Boiler cyclone micro-oil coal powder burner of the present invention, comprises micro-oil combustion device, primary air piping, inner second air device and outer second air device;
Described micro-oil combustion device comprises micro-oil gun, sight fire device, the central air hose be connected with micro-oil gun, micro-oil burner of being connected with central air hose, and the fuel oil in combustion chamber is lighted by described burning torch; See fiery device observation fuel oil whether to burn and combustion case;
Described primary air piping moves towards to comprise wind powder entrance, premixer successively from wind direction, primary centre enrichment facility, secondary center enrichment facility, and being located at inner second air device, the outer second air device be located at outside inner second air device of primary air piping outlet, described premixer is connected with micro-oil burner;
The inner second air adjusting device that described inner second air device comprises the inner second air air duct be located at outside primary air piping, is located at the inner second air spinning disk between inner second air air duct and primary air piping and is located at outside inner second air air duct;
The secondary air regulation device that described outer second air device comprises the outer second air air duct be located at outside inner second air air duct, is located at the outer second air adjustable rotary flow of outer second air air duct one end and is connected with the flow of outer second air adjustable rotary.
Further, bellows are provided with outside described inner second air device and outer second air device.
Further, described primary air piping is in " J " type.
Further, described tiny-oil ignition rifle is high-energy firing gun.
In the present invention during boiler ignition start, utilize the thermal-flame that oil inflame produces, the Pulverized Coal through the coal dust center of this flame is made to obtain rapid cleavage burning, combustion flame is after primary centre enrichment facility, secondary center enrichment facility, because coal powder density is improved, burn stronger; Subsequently, combustion flame is through inner second air spout, and being subject to inner second air swirling eddy at this affects and passive rotation, the oxygen that simultaneously stability inner second air supplements, and burning is more strong, and ignition temperature is higher; Finally, combustion flame, through outer second air spout, is subject to the impact of outer second air swirling eddy and flame at this and rotates and strengthened, the oxygen that simultaneously stability outer second air supplements, and burning is more strong and thoroughly.By a series of overheavy firing, ensure that primary wind and powder normal combustion under consumption a small amount of combustion oil condition, realize fuel ignition and steady combustion, save ignition of the boiler and stable combustion oil.
Beneficial effect: the present invention is for conventional burners, and enough realizations " replace oil with coal, swirl flow combustion ", can not only realize the burning of a small amount of fuel ignition, can also realize efficient low nitrogen burning by swirling eddy; The invention solves that the technical program solves that plasma burner input cost is high, coal adaptability is poor, power consumption is high, service life is short, system complex and the shortcoming such as maintenance cost is high; Solve Gasifying Small Oil Gun to exert oneself little, that ignition energy is low and coal adaptability is poor problem; The two strong buner system complex structure of solution, the problem that fuel consumption is large and cost of investment is high.
The present invention only consumes a small amount of oil just can firing coal-dust, and coal dust firing is oil consumption not, has higher economic benefit; Its structure is simple, and maintenance cost is low; Oil easily lights and ignition temperature is high, can light all kinds of coal, has the wider coal scope of application; Secondary Air classification is sent into, fractional combustion, and reduce the generation of combustion phases nitrogen oxide, can realize low nitrogen burning, environmental benefit is obvious; Secondary Air eddy flow participates in burning, and combustion flame is more stable, has certain for steady combustion effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, a kind of Industrial Boiler cyclone micro-oil coal powder burner, comprise micro-oil combustion device, primary air piping, inner second air device 15, outer second air device 16 and bellows 5, the axial line of primary air piping, inner second air device 15, outer second air device 16 and bellows 5 is all overlapping.Being inner second air device 15 outside primary air piping, is outer second air device 16 outside inner second air device 15, and first three is all in bellows 5.
Micro-oil combustion device, by micro-oil gun 1, central air hose 2, micro-oil burner 3, high-energy firing gun 17 and see fiery device 18 and form, wherein, fuel ignition, burner is enabled high-energy firing gun 17 after throwing oil and is lighted fuel oil, form the flame of centre of high temperature, further firing coal-dust, whether flame is observed, observe fuel oil burn and combustion case by seeing fiery device 18.Burner is enabled high-energy firing gun 17 after throwing oil and is lighted compressed air-atomized fuel oil, forms the flame of centre of high temperature, further firing coal-dust.
Primary air piping, primary air piping flows to along wind powder and is followed successively by: wind powder entrance, channel bend, premixer 10, primary centre enrichment facility 11, secondary center enrichment facility 12, inner second air spout 8, outer second air spout 9.
Wherein, primary air piping Main Function: conveying First air and coal dust; Realize coal dust and mix combining combustion in premixer 10 with fuel oil; By collision separation principle, at combustion medium by primary centre enrichment facility 11, concentrated step by step during secondary center enrichment facility 12, overheavy firing;
Inner second air device 15, inner second air device 15 is made up of inner second air air duct 8, inner second air spinning disk 6 and inner second air adjusting device 13.
Inner second air device 15 major function: send into inner second air, for the burning in primary air piping provides extra oxygen amount, overheavy firing, realizes one-level combustion-supporting; Made the inner second air generation eddy flow filled into by spinning disk 6, vortex gas-flow enters primary air piping, drives primary wind and powder to rotate, realizes one-level swirl flow combustion; Inner second air air quantity can be regulated by inner second air adjusting device 13, and then regulate burning.Inner second air, outside primary air piping, cools primary air piping, prevents burner wall overtemperature.
Outer second air device 16, outer second air device is made up of outer second air air duct 9, outer second air adjustable rotary flow 7 and outer second air adjusting device 4.
Outer second air device 16 major function: send into outer second air, in primary air piping and one-level swirl flow combustion provide extra oxygen amount, overheavy firing, realize secondary combustion-supporting; Made the outer second air generation eddy flow filled into by adjustable rotary flow, vortex gas-flow enters primary air piping outlet, strengthens primary wind and powder and rotates, realize secondary swirl flow combustion; Outer second air spinning disk 7 anglec of rotation can be regulated by outer second air adjusting device, and then outer second air air quantity and spin intensity can be regulated, and then regulate burning.
Bellows 5, bellows 5 are shell structure, and Secondary Air is assigned to inner second air device 15 and outer second air device 16 respectively in bellows 5.
Under to be specific embodiment of the invention process:
In the steam line of micro-oil gun 1, add fuel oil, start high-energy firing gun and light fuel oil.
Through seeing after fiery device 18 sees clear flame, pass into quantitative centre wind from the centre wind pipeline 2 micro-oil gun 1, centre wind fully mixes in premixer 10 with fuel oil, makes fuel oil Thorough combustion, forms high temp fire core; At this moment fuel oil flame momentum is large, rigidity is strong, spread speed is fast, central temperature is high.Eventually pass outer second air spout 9, pass into a certain amount of rotation outer second air at this.
When after fuel oil flame stabilization, take First air as carrier, add coal dust from primary wind and powder entrance.In premixer 10, part coal dust and fuel oil flame mix rapidly and cracking is burnt.
From premixer 10, pulverized coal flame out arrives inner second air spout 8 respectively through primary centre enrichment facility 11, secondary center enrichment facility 12, a certain amount of rotation inner second air is passed at this, fill into certain oxygen amount and pulverized coal flame is rotated, form internal layer swirl flame, coal dust and flame are wrapped in internal layer and rotate high-temperature region.Subsequently, regulate inner second air passage aperture according to case of fire by inner second air adjuster 13, and then regulate inner second air air quantity.
Introduce and the homodromal outer second air of inner second air through outer second air spout 9 outside inner second air spout 8, outer second air acts on internal layer swirl flame, strengthens flame and rotates, the mixing of strengthening coal dust and air, fill into sufficient oxygen amount, impel coal dust Thorough combustion.Subsequently, the anglec of rotation of outer second air spinning disk 7 can be regulated by outer second air adjuster 4, to regulate outer second air air quantity, the outer second air anglec of rotation and wind speed, realize the adjustment of outer second air swirl strength, thus regulate swirl flame.
The present embodiment, through rationalization's burning wind, realizes the fractional combustion of coal dust, effectively can reduce the generation of nitrogen oxide, reduce nitrogen discharged.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. an Industrial Boiler cyclone micro-oil coal powder burner, is characterized in that: comprise micro-oil combustion device, primary air piping, inner second air device (15) and outer second air device (16);
The central air hose (2) that described micro-oil combustion device comprises micro-oil gun (1), fiery device (18) seen by burning torch (17), be connected with micro-oil gun (1), the micro-oil burner (3) be connected with central air hose (2), the micro-fuel oil in micro-oil burner (3) is lighted by described burning torch (17); See fiery device (18) observation fuel oil whether to burn and combustion case;
Described primary air piping moves towards to comprise wind powder entrance, premixer (10) successively from wind direction, primary centre enrichment facility (11), secondary center enrichment facility (12), and be located at primary air piping outlet inner second air device (15), be located at inner second air device (15) outer second air device (16) outward, described premixer (10) are connected with micro-oil burner (3);
Described inner second air device (15) comprises the inner second air air duct (8) be located at outside primary air piping, is located at the inner second air spinning disk (6) between inner second air air duct (8) and primary air piping and is located at inner second air air duct (8) inner second air adjusting device (13) outward;
Described outer second air device (16) comprises the secondary air regulation device (4) being located at inner second air air duct (8) outer second air air duct (9) outward, being located at the outer second air adjustable rotary flow (7) of outer second air air duct (9) one end and being connected with outer second air adjustable rotary flow (7).
2. Industrial Boiler cyclone micro-oil coal powder burner according to claim 1, is characterized in that: be provided with bellows (5) outside described inner second air device (15) and outer second air device (16).
3. Industrial Boiler cyclone micro-oil coal powder burner according to claim 1, is characterized in that: described primary air piping is in " J " type.
4. Industrial Boiler cyclone micro-oil coal powder burner according to claim 1, is characterized in that: described burning torch (17) is high-energy firing gun.
5. Industrial Boiler cyclone micro-oil coal powder burner according to claim 1, is characterized in that: the axial line of primary air piping, inner second air device (15), outer second air device (16) and bellows (5) is all overlapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510155494.5A CN104728837A (en) | 2015-04-03 | 2015-04-03 | Industrial boiler swirling flow micro-oil pulverized coal burner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510155494.5A CN104728837A (en) | 2015-04-03 | 2015-04-03 | Industrial boiler swirling flow micro-oil pulverized coal burner |
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| CN104728837A true CN104728837A (en) | 2015-06-24 |
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| CN201510155494.5A Pending CN104728837A (en) | 2015-04-03 | 2015-04-03 | Industrial boiler swirling flow micro-oil pulverized coal burner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152135A (en) * | 2016-08-25 | 2016-11-23 | 安徽昌信生物质能源有限公司 | Economical gas safety ignition burner and control method thereof |
| CN109340745A (en) * | 2018-10-10 | 2019-02-15 | 武汉理工大学 | New and effective more neckings are classified whirlwind coal burner |
Citations (6)
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|---|---|---|---|---|
| US5697306A (en) * | 1997-01-28 | 1997-12-16 | The Babcock & Wilcox Company | Low NOx short flame burner with control of primary air/fuel ratio for NOx reduction |
| EP1741977A1 (en) * | 2005-07-07 | 2007-01-10 | Hitachi Power Europe GmbH | Pulverized coal burner for low NOx emissions |
| CN201487948U (en) * | 2009-08-31 | 2010-05-26 | 中国计量学院 | Central oxygen enrichment tiny oil start-up burner |
| CN201547766U (en) * | 2009-12-08 | 2010-08-11 | 黑龙江省电力科学研究院 | Rotational flow ignition pulverized coal combustor |
| CN103759258A (en) * | 2014-01-13 | 2014-04-30 | 徐州燃控科技股份有限公司 | Fuel-saving/gas-ignition stable-combustion low-nitrogen swirling pulverized coal combustor |
| CN204786376U (en) * | 2015-04-03 | 2015-11-18 | 南京创能电力科技开发有限公司 | Little oily coal burner of industrial boiler whirl |
-
2015
- 2015-04-03 CN CN201510155494.5A patent/CN104728837A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5697306A (en) * | 1997-01-28 | 1997-12-16 | The Babcock & Wilcox Company | Low NOx short flame burner with control of primary air/fuel ratio for NOx reduction |
| EP1741977A1 (en) * | 2005-07-07 | 2007-01-10 | Hitachi Power Europe GmbH | Pulverized coal burner for low NOx emissions |
| CN201487948U (en) * | 2009-08-31 | 2010-05-26 | 中国计量学院 | Central oxygen enrichment tiny oil start-up burner |
| CN201547766U (en) * | 2009-12-08 | 2010-08-11 | 黑龙江省电力科学研究院 | Rotational flow ignition pulverized coal combustor |
| CN103759258A (en) * | 2014-01-13 | 2014-04-30 | 徐州燃控科技股份有限公司 | Fuel-saving/gas-ignition stable-combustion low-nitrogen swirling pulverized coal combustor |
| CN204786376U (en) * | 2015-04-03 | 2015-11-18 | 南京创能电力科技开发有限公司 | Little oily coal burner of industrial boiler whirl |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152135A (en) * | 2016-08-25 | 2016-11-23 | 安徽昌信生物质能源有限公司 | Economical gas safety ignition burner and control method thereof |
| CN106152135B (en) * | 2016-08-25 | 2018-03-30 | 安徽昌信生物质能源有限公司 | Economical gas safety ignition burner and its control method |
| CN109340745A (en) * | 2018-10-10 | 2019-02-15 | 武汉理工大学 | New and effective more neckings are classified whirlwind coal burner |
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