CN103836620B - Oxygen-enriched micro-oil staged combustion device - Google Patents
Oxygen-enriched micro-oil staged combustion device Download PDFInfo
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- CN103836620B CN103836620B CN201410078208.5A CN201410078208A CN103836620B CN 103836620 B CN103836620 B CN 103836620B CN 201410078208 A CN201410078208 A CN 201410078208A CN 103836620 B CN103836620 B CN 103836620B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The present invention relates to a kind of oxygen-enriched micro-oil staged combustion device.There is presently no the staged combustion device of a kind of burn-off rate that can improve coal dust.The present invention includes primary air piping, enrichment facility, oil combustion chamber and circumference air channel, its feature is: also include first-stage firing chamber, ring-like spout of pure oxygen, secondary combustion chamber, the ring-like spout of secondary pure oxygen and pure oxygen conduit, first-stage firing chamber and secondary combustion chamber are installed in primary air piping, enrichment facility, first-stage firing chamber and secondary combustion chamber are arranged in order along coal dust flow direction, three grades of combustor are formed between secondary combustion chamber and the outlet of primary air piping, oil combustion chamber is arranged on first-stage firing chamber, the axis of oil combustion chamber and the axes intersect of first-stage firing chamber, and in 0 an angle of 90 degrees, ring-like spout of pure oxygen is arranged on middle part or the afterbody of first-stage firing chamber.The present invention can improve the burn-off rate of coal dust, uses oil mass when saving boiler startup and low-load combustion-stabilizing.
Description
Technical field
The present invention relates to a kind of burner, especially relate to a kind of oxygen-enriched micro-oil staged combustion device, belong to a kind of boiler-burner with coal dust as raw material.
Background technology
Fast development along with China's economy, the demand of electric power surges, the whole nation the opening of Thermal generation unit, stop and low-load combustion-stabilizing need to consume bulk petroleum resource, and Global Oil resource is the most in short supply constantly rises with crude oil price, control fuel oil consume Yi Shi China Thermal Power Generation Industry have to faced by realistic problem.Meanwhile, put into environmental protection equipment in advance, the task of top priority of the dust pollution Ye Shi power plant environment protection treating reducing that electricity generation boiler produces on startup.
Recent year thermoelectricity producer generally carries out substantial amounts of technological transformation to the big grease gun igniting smooth combustion apparatus that generating coal-burning boiler is traditional, is respectively adopted plasma, Gasifying Small Oil Gun, double ignition smooth combustion mode such as by force according to the difference of coal.Due to its inherent mechanism, in the face of China's multifarious special national conditions of electricity coal coal, there is certain limitation in such technology, certain degree constrains country's fuel-economizing implementation in actual applications.Research and development adapt to China's actual conditions, and the fuel-economizing ignition smooth combustion new technique of stability and high efficiency has become China's Thermal Power Generation Industry and needed the key subjects of solution badly.
If publication date is on 05 28th, 2008, in the Chinese patent of Publication No. CN101187470, disclose a kind of little oil ignited swirling pulverized coal combustion device, the entrance point of inwall eddy flow fan housing of this coal powder burner is connected with the outer wall of the outer tube port of export, channel outlet in air channel is connected with inwall eddy flow fan housing, eddy flow outer second air cover and direct-current secondary fan housing respectively, it is respectively equipped with air-flow plate at feeder connection in air channel, the structure of this little oil ignited swirling pulverized coal combustion device is complicated, and oil-saving effect is the most notable.And for example publication date is on 08 11st, 2010, in the Chinese patent of publication number CN101799172A, disclose a kind of high-temperature oxygen-rich coal dust grading ignition device, it uses the mode that high-temperature oxygen-enriched gas mixes with breeze airflow, directly heat the central canal high concentration pulverized coal air-flow that ignites, then ignited second level breeze airflow by the central canal coal dust after catching fire, ignited higher level breeze airflow or whole coal burner by the second level coal dust that catches fire again, after whole coal burner is ignited, high-temperature oxygen-enriched gas is replaced with combustion-supporting secondary air, change simultaneously and be axially moveable swirl vanes position, adjust burner flow field, realize steady combustion, the structure design of this high-temperature oxygen-rich coal dust grading ignition device is not reasonable, the inadequate science of distribution of combustor at different levels, coal dust is difficult to be fully burned.For another example publication date is December in 2008 24, in the Chinese patent of Publication No. CN101329064, disclosed a kind of side direction multilevel open type igniting center, and publication date is on 04 18th, 2012, in the Chinese patent of Publication No. CN102418922A, disclosed a kind of oxygen-enriched ignition and low-load combustion-stabilizing coal burner, structure design science all not, it is difficult to be really achieved with coal for replacing oil with the purpose of oxygen fuel-economizing.
In sum, there is presently no a kind of burn-off rate that can improve coal dust, save use oil mass when boiler startup and low-load combustion-stabilizing, the coal dust burn-off rate low staged combustion device on equipment impacts such as flue, SCR, electric precipitation and desulfurizing towers caused when reducing boiler startup initial stage and low-load combustion-stabilizing.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency present in prior art, and a kind of reasonable in design is provided, the burn-off rate of coal dust can be improved, save use oil mass when boiler startup and low-load combustion-stabilizing, the coal dust burn-off rate low oxygen-enriched micro-oil staged combustion device on equipment impacts such as flue, SCR, electric precipitation and desulfurizing towers caused when reducing boiler startup initial stage and low-load combustion-stabilizing.
nullThe present invention solves the problems referred to above and be the technical scheme is that this oxygen-enriched micro-oil staged combustion device includes primary air piping、Enrichment facility、Oil combustion chamber and circumference air channel，Described enrichment facility is arranged in primary air piping，Described circumference air channel is arranged on the outer wall of primary air piping，This circumference air channel is positioned at the exit of primary air piping，Its construction features is: also include first-stage firing chamber、Ring-like spout of pure oxygen、Secondary combustion chamber、The ring-like spout of secondary pure oxygen and pure oxygen conduit，Described first-stage firing chamber and secondary combustion chamber are installed in primary air piping，Described enrichment facility、First-stage firing chamber and secondary combustion chamber are arranged in order along coal dust flow direction，The caliber of described first-stage firing chamber is less than the caliber of secondary combustion chamber，Described primary air piping、Enrichment facility、The axis of first-stage firing chamber and secondary combustion chamber is overlapping，Three grades of combustor are formed between described secondary combustion chamber and the outlet of primary air piping，Described oil combustion chamber is arranged on first-stage firing chamber，The axis of this oil combustion chamber and the axes intersect of first-stage firing chamber，And the angle between the axis of oil combustion chamber and the axis of first-stage firing chamber is 0-90 degree，A described ring-like spout of pure oxygen is arranged on middle part or the afterbody of first-stage firing chamber，The described ring-like spout of secondary pure oxygen is arranged on the nozzle exit area of three grades of combustor，Described pure oxygen conduit is connected on a ring-like spout of pure oxygen and the ring-like spout of secondary pure oxygen.
As preferably, present invention additionally comprises auxiliary oil gun room, described auxiliary oil gun room is arranged in secondary combustion chamber.
As preferably, a ring-like spout of pure oxygen of the present invention and the ring-like spout of secondary pure oxygen all include that entrance and pure oxygen spout, described pure oxygen spout are made up of 8 to 30 apertures or for overall slotting structure.
The present invention is compared with prior art, have the following advantages and effect: improve the burn-off rate of coal dust, save use oil mass when boiler startup and low-load combustion-stabilizing, the coal dust burn-off rate low impact on equipment such as flue, SCR, electric precipitation and desulfurizing towers caused when decreasing boiler startup initial stage and low-load combustion-stabilizing.Coal dust is after enrichment facility, and part thick coal culm enters first-stage firing chamber and ignited by the high-temperature flue gas of oil combustion chamber, and carries out combustion-supporting with pure oxygen, and ignite other coal dusts in entrance secondary firing indoor, enters three grades of combustor, and ignite under conditions of pure oxygen combustion-supporting all coal dusts.The present invention uses energy to amplify step by step and oxygen-enriched combusting principle, and can effectively ignite multiple coal dust, and such as bituminous coal, meager coal, brown coal and anthracite etc., applied widely, burn-off rate is high.
The present invention has implemented national energy-saving and has reduced discharging and the fundamental state policy of development low-carbon economy, on the basis of ignition smooth combustion apparatus all kinds of to domestic Thermal Power Generation Industry and coal burning process flow process carry out deep investigation and research, for all kinds of coals and powder process mode, the various type of furnace and combustion system, have developed and there is high efficiency, oil saving and environmental protection characteristic, and have many coals and many type of furnaces adaptive ignition smooth combustion petroleum economizer, there is good economic results in society and wide market prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of oxygen-enriched micro-oil staged combustion device in the embodiment of the present invention.
Fig. 2 is the left view structural representation of Fig. 1.
Fig. 3 is the structural representation of a ring-like spout of pure oxygen in the embodiment of the present invention.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following example are explanation of the invention and the invention is not limited in following example.
Embodiment.
Seeing Fig. 1 to Fig. 3, the oxygen-enriched micro-oil staged combustion device in the present embodiment includes primary air piping 1, enrichment facility 2, first-stage firing chamber 3,4, ring-like spout of pure oxygen 5 of oil combustion chamber, secondary combustion chamber 6, the ring-like spout of secondary pure oxygen 8, circumference air channel 9, pure oxygen conduit 13 and auxiliary oil gun room 10.
Enrichment facility 2 in the present embodiment is arranged in primary air piping 1, and circumference air channel 9 is arranged on the outer wall of primary air piping 1, and this circumference air channel 9 is positioned at the exit of primary air piping 1.
First-stage firing chamber 3 and secondary combustion chamber 6 in the present embodiment are installed in primary air piping 1, enrichment facility 2, first-stage firing chamber 3 and secondary combustion chamber 6 are arranged in order along coal dust flow direction, the caliber of first-stage firing chamber 3 is less than the caliber of secondary combustion chamber 6, and the axis of primary air piping 1, enrichment facility 2, first-stage firing chamber 3 and secondary combustion chamber 6 is overlapping.
Three grades of combustor 7 are formed between secondary combustion chamber 6 and the outlet of primary air piping 1 in the present embodiment, oil combustion chamber 4 is arranged on first-stage firing chamber 3, the axis of this oil combustion chamber 4 and the axes intersect of first-stage firing chamber 3, and the angle between the axis of the axis of oil combustion chamber 4 and first-stage firing chamber 3 is 0-90 degree, of coursing, the direction of this court of angle institute is directed towards the direction at enrichment facility 2 place.Auxiliary oil gun room 10 in the present embodiment is arranged in secondary combustion chamber 6, may be inserted into a micro-oil gun and carry out combustion-supporting in auxiliary oil gun room 10, and the present invention can also cancel auxiliary oil gun room 10 according to the change of coal.
A ring-like spout of pure oxygen 5 in the present embodiment is arranged on the afterbody of first-stage firing chamber 3, and the ring-like spout of secondary pure oxygen 8 is arranged on the nozzle exit area of three grades of combustor 7, and pure oxygen conduit 13 is connected on a ring-like spout of pure oxygen 5 and the ring-like spout of secondary pure oxygen 8.A ring-like spout of pure oxygen 5 in the present invention can also be arranged on the middle part of first-stage firing chamber 3.
A ring-like spout of pure oxygen 5 and the ring-like spout of secondary pure oxygen 8 in the present invention may each comprise entrance 11 and pure oxygen spout 12, and pure oxygen spout 12 can be made up of 8 to 30 apertures, it is also possible to for overall slotting structure.
Oxygen-enriched micro-oil staged combustion device in the present embodiment uses enrichment facility 2 to be concentrated by coal dust, the breeze airflow that centre concentration is high is ignited in entering first-stage firing chamber 3, coal dust entrance secondary combustion chamber 6 outside first-stage firing chamber 3 that periphery concentration is relatively low, and ignited by the coal dust fired in first-stage firing chamber 3.The present embodiment adds pure oxygen by a ring-like spout of pure oxygen 5 at the afterbody of first-stage firing chamber 3, increase the combustion intensity of coal dust, increase the burn rate of coal dust, in secondary combustion chamber 6, the pulverized coal flame of burning then ignites residue coal dust, pure oxygen is used to carry out combustion-supporting by the ring-like spout of secondary pure oxygen 8 at the nozzle exit area of three grades of combustor 7, classification is ignited, classification pure oxygen combustion-supporting, finally ignite whole coal dust, after fire box temperature rises to uniform temperature, oil-break oxygen-enriched combustion-supporting, reaches with coal for replacing oil, with the purpose of oxygen fuel-economizing.
The reasonable in design, ingenious of the oxygen-enriched micro-oil staged combustion device in the present embodiment, organic cooperation between all parts, enter a pure oxygen annular jet 5 and the ring-like spout of secondary pure oxygen 8 for combustion-supporting pure oxygen through pure oxygen conduit 13, in primary air piping 1, form uniform oxygen-enriched flow field.Owing to ring-like spout of pure oxygen 5 is positioned at middle part or the afterbody of primary zone 3, the ring-like spout of secondary pure oxygen 8 is positioned at the nozzle exit area of three grades of combustor 7, forms multistage oxygen enriched environment.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, be named title etc. can be different, and the above content described in this specification is only to present configuration example explanation.All equivalence changes done according to structure, feature and the principle described in inventional idea of the present invention or simple change, be all included in the protection domain of patent of the present invention.Described specific embodiment can be made various amendment or supplements or use similar mode to substitute by those skilled in the art; without departing from the structure of the present invention or surmount scope defined in the claims, protection scope of the present invention all should be belonged to.
Claims (2)
- null1. an oxygen-enriched micro-oil staged combustion device，Including primary air piping、Enrichment facility、Oil combustion chamber and circumference air channel，Described enrichment facility is arranged in primary air piping，Described circumference air channel is arranged on the outer wall of primary air piping，This circumference air channel is positioned at the exit of primary air piping，It is characterized in that: also include first-stage firing chamber、Ring-like spout of pure oxygen、Secondary combustion chamber、The ring-like spout of secondary pure oxygen and pure oxygen conduit，Described first-stage firing chamber and secondary combustion chamber are installed in primary air piping，Described enrichment facility、First-stage firing chamber and secondary combustion chamber are arranged in order along coal dust flow direction，The caliber of described first-stage firing chamber is less than the caliber of secondary combustion chamber，Described primary air piping、Enrichment facility、The axis of first-stage firing chamber and secondary combustion chamber is overlapping，Three grades of combustor are formed between described secondary combustion chamber and the outlet of primary air piping，Described oil combustion chamber is arranged on first-stage firing chamber，The axis of this oil combustion chamber and the axes intersect of first-stage firing chamber，And the angle between the axis of oil combustion chamber and the axis of first-stage firing chamber is 0-90 degree，A described ring-like spout of pure oxygen is arranged on middle part or the afterbody of first-stage firing chamber，The described ring-like spout of secondary pure oxygen is arranged on the nozzle exit area of three grades of combustor，Described pure oxygen conduit is connected on a ring-like spout of pure oxygen and the ring-like spout of secondary pure oxygen，A described ring-like spout of pure oxygen and the ring-like spout of secondary pure oxygen all include entrance and pure oxygen spout，Described pure oxygen spout is made up of 8 to 30 apertures or is overall slotting structure；Coal dust is after enrichment facility, and part thick coal culm enters first-stage firing chamber and ignited by the high-temperature flue gas of oil combustion chamber, and carries out combustion-supporting with pure oxygen, and ignite other coal dusts in entrance secondary firing indoor, enters three grades of combustor, and ignite under conditions of pure oxygen combustion-supporting all coal dusts.
- Oxygen-enriched micro-oil staged combustion device the most according to claim 1, it is characterised in that: also include that auxiliary oil gun room, described auxiliary oil gun room are arranged in secondary combustion chamber.
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| CN201410078208.5A CN103836620B (en) | 2014-03-05 | 2014-03-05 | Oxygen-enriched micro-oil staged combustion device |
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| CN201410078208.5A CN103836620B (en) | 2014-03-05 | 2014-03-05 | Oxygen-enriched micro-oil staged combustion device |
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| CN103836620B true CN103836620B (en) | 2016-11-23 |
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| CN107575859A (en) * | 2017-09-27 | 2018-01-12 | 西安热工研究院有限公司 | The oxygenation start-up burner and its ignition smooth combustion method of a kind of coal burning boiler of power station |
| CN109340745B (en) * | 2018-10-10 | 2019-10-25 | 武汉理工大学 | More neckings are classified whirlwind coal burner |
| CN110131706A (en) * | 2019-06-17 | 2019-08-16 | 河南迪诺环保科技股份有限公司 | A kind of boiler multilevel burning highly effective heating device |
| CN111594871A (en) * | 2020-06-15 | 2020-08-28 | 西安西热锅炉环保工程有限公司 | Oxygen-enriched tiny-oil ignition device and method based on double-air-regulation cyclone burner |
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| CN101012928A (en) * | 2007-02-07 | 2007-08-08 | 鞠胤红 | Smokeless coal gasification micro grease gun igniting pulverized coal burner |
| CN201582810U (en) * | 2009-12-15 | 2010-09-15 | 中国航天空气动力技术研究院 | Dual-strengthening micro-oil ignition and flame stabilizer with oxygen combustion supporting |
| CN102418922A (en) * | 2011-11-07 | 2012-04-18 | 华北电力大学 | Oxygen-enriched ignition and low-load stable combustion coal combustor |
| CN102506423A (en) * | 2011-09-20 | 2012-06-20 | 华北电力大学 | Method for assisting in igniting low-volatile coal in burning by adding oxygen |
| CN203784939U (en) * | 2014-03-05 | 2014-08-20 | 华电电力科学研究院 | Oxygen-enriched micro oil staged combustion device |
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- 2014-03-05 CN CN201410078208.5A patent/CN103836620B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101012928A (en) * | 2007-02-07 | 2007-08-08 | 鞠胤红 | Smokeless coal gasification micro grease gun igniting pulverized coal burner |
| CN201582810U (en) * | 2009-12-15 | 2010-09-15 | 中国航天空气动力技术研究院 | Dual-strengthening micro-oil ignition and flame stabilizer with oxygen combustion supporting |
| CN102506423A (en) * | 2011-09-20 | 2012-06-20 | 华北电力大学 | Method for assisting in igniting low-volatile coal in burning by adding oxygen |
| CN102418922A (en) * | 2011-11-07 | 2012-04-18 | 华北电力大学 | Oxygen-enriched ignition and low-load stable combustion coal combustor |
| CN203784939U (en) * | 2014-03-05 | 2014-08-20 | 华电电力科学研究院 | Oxygen-enriched micro oil staged combustion device |
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