CN203249237U - Spiral-input type pulverized coal burner - Google Patents
Spiral-input type pulverized coal burner Download PDFInfo
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- CN203249237U CN203249237U CN 201320087377 CN201320087377U CN203249237U CN 203249237 U CN203249237 U CN 203249237U CN 201320087377 CN201320087377 CN 201320087377 CN 201320087377 U CN201320087377 U CN 201320087377U CN 203249237 U CN203249237 U CN 203249237U
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- burner
- furnace
- pulverized coal
- burning furnace
- wall
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Abstract
The utility model discloses a spiral-input type pulverized coal burner. The pulverized coal burner comprises a pre-burning furnace, a furnace top flame guide pipe, a blast blower, a pulverized coal input pipe, a plurality of air supply outlets, rotation air openings and a plurality of temperature sensors, wherein the pre-burning furnace is vertically or horizontally or obliquely arranged; the furnace top flame guide pipe is matched and mounted on the top wall of the pre-burning furnace and penetrates through the center of the top wall of the pre-burning furnace; an air outlet of the blast blower faces the furnace top flame guide pipe, and the blast blower is arranged above the pre-burning furnace; the pulverized coal input pipe is arranged at the top of the pre-burning furnace and introduced into the furnace in a tangent manner; the air supply outlets are formed in the wall of the pre-burning furnace; and the rotation air openings and the temperature sensors are mounted on the side walls of the pre-burning furnace and the furnace top flame guide pipe. The spiral-input type pulverized coal burner can overcome defects of higher pulverized coal requirements, low fuel utilization rate, poor environmental protection property, high cost and the like in the prior art, and can realize the advantages of energy conservation, consumption reduction, high environmental protection property and cost reduction.
Description
Technical field
The utility model relates to technical field of burner, particularly, relates to a kind of powder formula burner for pulverized coal that is threaded into.
Background technology
The present situation of coal burner can be referring to conventional pulverized-coal burner as shown in Figure 1.In Fig. 1, the conventional pulverized-coal burner comprises housing, end at housing is equipped with air blast 6, is provided with for air outlet from a pulverizer air 1 to enclosure interior that carry, is equipped with for the rotation air port to burner shell delivered inside secondary rotating wind 2 in the outside of this air outlet ring-type, the other end of housing is provided with crater 7, edge at crater 7 also is provided with for air outlet from four wind 4 to crater 7 places that carry, housing comprises the body of heater shell, and pastes at body of heater outer casing inner wall and the heat-insulation layer that is made of heat-insulating material; On heat-insulation layer, be provided with symmetrically for the rotation air port of carrying three rotary winds 3 to enclosure interior.
Now the common feature with various coal burners is forward to dust, and namely coal dust and flame moves towards identical.When spraying into pre-burner from the body of heater afterbody simultaneously, cold wind and coal dust because the very low coal dust of temperature and unburned, when coal dust advances to edge, high-temperature region volatile matter and begins to separate out, just lighted, so conventional pulverized-coal burner ubiquity following problems.
1, because the wind speed higher (all being tens meter per seconds usually) in the pre-burner, most less than of most pulverized coal particles time in the high-temperature region in stove 0.1 second, so the coal dust quality is slightly poor will incomplete combustion.
2, in order to make as far as possible after-flame of coal dust, the conventional pulverized-coal burner has strict requirement to volatile matter, calorific value and the fineness of coal dust, especially those do not have the coal burner of large-scale precombustion chamber and abundant combustion space, and the granularity ﹤ 45 μ m(that require the volatile matter very high (〉=40%) of coal dust, the calorific value of coal dust 〉=6000 kilocalories, coal dust are 300 orders).The harshness of coal dust is required to have brought the high energy consumption of powder manufacturing apparatus and expensive, in the process that stores pulverized coal conveying, more exist the excessive risk of blasting with detonation.
3, in order to finish in a short period of time the redox reaction of coal dust, the temperature of the pre-burner of conventional pulverized-coal burner high-temperature region must be very high, so not only shortened the life-span of insulation material, also increased the weight of simultaneously the generation of slag and the discharging of nitrogen oxide.
4, the control system of conventional pulverized-coal burner is generally all fairly simple, the adjusting of flame not higher than also (usually less than 1:4), so the temperature departure is larger in the production process, product quality is difficult to guarantee.
In sum, the conventional pulverized-coal burner is higher to the cost of the requirement of coal dust and pulverized coal preparation, and the coal dust quality is slightly poor will to cause high coal consumption, high pollution and combustion instability, and very the narrow temperature departure is larger for the flame adjustable range simultaneously.
The utility model content
The purpose of this utility model is, for the problems referred to above, a kind of powder formula burner for pulverized coal that is threaded into is proposed, adopt the powder mode that is threaded into, greatly prolonged the time of staying of bulky grain coal dust in the high-temperature region, to realize fuel availability height, good environmental protection and the low purpose of pulverized coal preparation cost.
For achieving the above object, the technical solution adopted in the utility model is: a kind of powder formula burner for pulverized coal that is threaded into, comprise the pre-burner that vertically (or level or inclination) arranges, cooperate and be installed in described pre-burning furnace roof wall, and pass the furnace roof fuse primer at pre-burning furnace roof wall center, air outlet is towards described furnace roof fuse primer, and be arranged on the air blast of pre-burner top, be arranged on described pre-burning furnace roof section, and with the coal dust input pipe in the tangent line form introducing stove, be opened in a plurality of air outlets on the furnace wall of described pre-burner, and be installed in ring-type rotation air port and a plurality of temperature sensor on described pre-burning furnace sidewall and the furnace roof fuse primer.
Further, described a plurality of air outlet, comprise the top side wall that is opened in described pre-burner and be used for the powder feeding air port of carrying coal dust wind that coal dust is sprayed into tangential direction from the high-temperature region of pre-burner to the pre-burning furnace interior, and be opened in the diapire of described pre-burner and be used for carrying to the pre-burning furnace interior three air outlets of three furnace bottom wind.
Further, a described powder feeding air port is positioned at the below of pre-burner inner roof wall, and described three air outlets are arranged on the center of pre-burning furnace hearth wall.
Further, described a plurality of rotations air port, comprise the sidewall that is installed in symmetrically described pre-burner and be used for secondary rotating air port to pre-burning furnace interior feeding secondary rotary wind, and be installed in described furnace roof fuse primer crater place and be used for providing to flame export four wind rotations of ring-type air port of four rotary winds of combustion-supporting oxygen.
Further, described temperature sensor comprises the top temperature sensor that is installed in described furnace roof fuse primer sidewall, and is installed in the bottom temperature sensor of described pre-burning furnace sidewall bottom.
Further, described furnace roof fuse primer is L shaped, and it vertically holds the roof center that penetrates and be installed in pre-burner.
Further, described pre-burner comprises the furnace wall, and the precombustion chamber that is positioned at inside, furnace wall; Described furnace wall comprises the body of heater shell, and the tubular high-temperature heat insulation layer that is arranged on described body of heater enclosure.
Further, the vertical end of described L shaped fuse primer passes the high-temperature heat insulation layer of pre-burning furnace roof wall and the air channel that top is arranged in the furnace roof upper case, and the body of heater shell place that the horizontal ends of described L shaped fuse primer is passed pre-burning furnace roof section is crater.
The powder formula burner for pulverized coal that is threaded into of the present utility model because the effect of centrifugal force makes coal dust be close to the furnace wall in the process of spiral-falling, has prolonged the time of staying of coal dust in the high-temperature region greatly.Fundamentally changed traditional coal burner to the harsh requirement of coal dust quality, simplified powder manufacturing apparatus, reduced coal dust cost and energy resource consumption, also reduced the severe contamination of tail gas to environment.The flame of this kind mode is regulated than accomplishing more than the 1:10, thereby can overcome the existing defective that coal dust firing actuator temperature departure is large, fuel availability is low, the feature of environmental protection is poor and cost is high, to realize cheaply advantage of energy-conserving and environment-protective, temperature control precision height and coal dust.
Other features and advantages of the utility model will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the utility model.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Accompanying drawing is used to provide further understanding of the present utility model, and consists of the part of specification, is used from explanation the utility model with embodiment one of the present utility model, does not consist of restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of conventional pulverized-coal burner;
Fig. 2 is the structural representation that the utility model is threaded into powder formula burner for pulverized coal.
By reference to the accompanying drawings 1, Reference numeral is as follows among the utility model embodiment:
Pulverizer air of 1-; 2-secondary rotating wind; Three rotary winds of 3-; Four rotary winds of 4-; The 5-heat-insulating material; The 6-air blast; The 7-crater.
By reference to the accompanying drawings 2, Reference numeral is as follows among the utility model embodiment:
Coal dust wind of 1-; 2-secondary rotating wind; Three furnace bottom wind of 3-; Four rotary winds of 4-; 5-furnace roof fuse primer; 6-high temperature CO air-flow; The 7-air blast; 8-high-temperature heat insulation layer; 9-flame; 10-body of heater shell; 11-furnace bottom thermocouple; 12-furnace roof thermocouple.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in restriction the utility model.
According to the utility model embodiment, provide a kind of powder formula burner for pulverized coal that is threaded into.As shown in Figure 2, the powder formula that the is threaded into burner for pulverized coal of present embodiment, comprise the pre-burner that vertically (or level or inclination) arranges, cooperate and be installed in pre-burning furnace roof wall, and pass the furnace roof fuse primer (such as furnace roof fuse primer 5) at pre-burning furnace roof wall center, air outlet is towards the furnace roof fuse primer, and be installed in the air blast (such as air blast 7) of pre-burner top, be arranged on pre-burning furnace roof section, and with the coal dust input pipe in the tangent line form introducing stove, be opened in a plurality of air outlets on the furnace wall of pre-burner, and be installed in rotation air port and a plurality of temperature sensor on pre-burning furnace sidewall and the furnace roof fuse primer.
Here, pre-burner comprises body of heater shell (such as body of heater shell 10) and the furnace wall that is positioned at body of heater inside.Described furnace wall comprises the tubular high-temperature heat insulation layer (such as high-temperature heat insulation layer 8) that is arranged on described body of heater inside.The vertical end of described L shaped fuse primer passes the high-temperature heat insulation layer at pre-burning furnace roof wall center and the air channel that top is arranged in the furnace roof upper case, and the body of heater shell place that the horizontal ends of described L shaped fuse primer is passed pre-burning furnace roof section is crater (such as flame 9).
Particularly, above-mentioned a plurality of air outlet, comprise the top side wall that is opened in pre-burner and be used for the powder feeding air port of carrying a coal dust wind (such as a coal dust wind 1) that coal dust is sprayed into tangential direction from pre-burning furnace roof section to the pre-burning furnace interior, this powder feeding air port is positioned at the below of stove inner roof wall; Above-mentioned a plurality of air outlet also comprises the diapire that is opened in pre-burner and three air outlets that are used for carrying to the pre-burning furnace interior three furnace bottom wind (such as three furnace bottom wind 3), and these three air outlets are arranged on the center of pre-burning furnace hearth wall.
Above-mentioned rotation air port, comprise the sidewall that is installed in pre-burner and be used for secondary rotating air port to pre-burning furnace interior feeding secondary rotary wind (such as secondary rotating wind 2), and be installed in furnace roof fuse primer crater place and be used for carrying to the pre-burning furnace interior four rotations of ring-type air port of four rotary winds (such as four rotary winds 4).
Above-mentioned a plurality of temperature sensor can comprise the furnace roof thermocouple (such as furnace roof thermocouple 12) that is installed in furnace roof fuse primer roof, and is installed in the furnace bottom thermocouple (such as furnace bottom thermocouple 11) of pre-burning furnace sidewall bottom.
The powder formula that the is threaded into burner for pulverized coal of above-described embodiment belongs to reverse centrifugal coal dust (coal face) combustor.This machine-made egg-shaped or honey-comb coal briquets powder sprays into tangential way from the high-temperature region of pre-burner, just takes fire very soon after heating up rapidly; Simultaneously flow to the bottom of pre-burner with reverse (with the opposite direction of flame export) spiral way; Because the effect of centrifugal force, bulky grain coal dust will rest on the peripheral burning of furnace bottom after arriving furnace bottom, this just makes also abundant after-flame of bulky grain and the low-calorie coal dust of low volatile.
The operation principle that is threaded into powder formula burner for pulverized coal of above-described embodiment is referring to Fig. 2.
Coal dust wind sprays into the top of tangential way from pre-burner coal dust along with one time, and Volatile also took fire after its temperature raise rapidly, then carbon granules and air generation redox reaction; The outer shroud air-flow that coal dust wind forms will flow downward twist along the furnace wall, and the effect of centrifugal force is got rid of a lot of pulverized coal particle that is heavier than air to the furnace wall and with the furnace wall and contacted, and make it be close to that drop down in the furnace wall until furnace bottom.In order to prevent that the ring air-flow is discharged body of heater in the large coal particles pruinescence, need the outer shroud air-flow to remain higher flow velocity, therefore added again and the equidirectional secondary rotating wind of pulverizer air in the middle part of body of heater.The outer rotational gas flow that spiral descends is drawn close to the center when arriving furnace bottom, forms interior ring air-flow upwards with same direction of rotation after merging with three furnace bottom wind.Do not contain the interior ring air-flow of bulky grain coal dust outside the fuse primer ejection stove at furnace roof center, the small carbon granules of a large amount of CO gas (being high temperature CO air-flow 6) and intimate after-flame and four wind are in the violent blending in flame export place, and it is burnt totally in a short period of time.The bulky grain coal dust that arrives simultaneously furnace bottom is in around the furnace wall by the effect of centrifugal force all the time, and volume constantly dwindles after redox reaction, until not enough just being wrapped up in by inside circulation when having overcome centrifugal force taken body of heater out of.
Like this, oarse-grained coal dust was difficult to escape from pre-burner before after-flame, and as seen this is threaded into powder formula burner for pulverized coal and will has the superpower coarse food grain ability of eating, can burning particles large, volatile matter and the lower coal dust of calorific value.This is threaded into powder formula burner for pulverized coal, thoroughly overturned the burning theory of conventional pulverized-coal burner, fundamentally changed traditional coal burner to the harsh requirement of coal dust quality, simplified powder manufacturing apparatus, reduced coal dust cost and energy resource consumption, also reduced the severe contamination of tail gas to environment.
The powder formula that the is threaded into burner for pulverized coal of above-described embodiment cooperates with numerically controlled flame regulative mode, can the precise quantification coal-air ratio, as seen this be threaded into powder formula burner for pulverized coal also will have very large flame regulate than (〉=1:10).By regulating the proportioning of time 1 to four wind of coal dust wind, also Control for Kiln Temperature can be moved under≤1000 ℃ state, make in the stove and can not produce cinder and nitrogen oxide.Both be conducive to reduce equipment cost, the work that can alleviate again the workman is slight, more be conducive to environmental protection.When needing non-dusting clean flame such as some operating mode, then can adopt hot operation state (greater than 1200 ℃) operation, allow and discharge body of heater the mud hole of establishing in addition after the ash content melting in the coal dust near the furnace bottom center, this moment, the furnace bottom outside also needed to establish in addition airtight water seal deslagging facility.
The powder formula that the is threaded into burner for pulverized coal of above-described embodiment, what specify is the reverse centrifugal burner for pulverized coal of vertical vertically-arranged, principle also can be horizontally-arranged with pre-burning tilting furnace or level as required accordingly, other adds the multiple purpose aeroplane that transformation also can manufacture it fuel oil, combustion gas, burning coal powder, can foretell: improved multiple purpose aeroplane is aspect combustion of high viscosity, low-calorie poor quality fuel oil and various low-calorie combustion gas, all have good stable fired state, all can embody the powerful vitality of this machine in the energy-conserving and environment-protective field.
It should be noted that at last: the above only is preferred embodiment of the present utility model, be not limited to the utility model, although with reference to previous embodiment the utility model is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. one kind is threaded into powder formula burner for pulverized coal, it is characterized in that, comprise vertically or level or the pre-burner that is obliquely installed, cooperate and be installed in described pre-burning furnace roof wall, and pass the furnace roof fuse primer at pre-burning furnace roof wall center, air outlet is towards described furnace roof fuse primer, and be arranged on the air blast of pre-burner top, be arranged on described pre-burning furnace roof section, and with the coal dust input pipe in the tangent line form introducing stove, be opened in a plurality of air outlets on the furnace wall of described pre-burner, and cooperate rotation air port and a plurality of temperature sensor that is installed on described pre-burning furnace sidewall and the furnace roof fuse primer.
2. the powder formula burner for pulverized coal that is threaded into according to claim 1, it is characterized in that, described a plurality of air outlet, comprise the top side wall that is opened in described pre-burner and be used for the powder feeding air port of carrying coal dust wind that coal dust is sprayed into tangential direction from the high-temperature region of pre-burner to the pre-burning furnace interior, and be opened in the diapire of described pre-burner and be used for carrying to the pre-burning furnace interior three air outlets of three furnace bottom wind.
3. the powder formula burner for pulverized coal that is threaded into according to claim 2 is characterized in that a described powder feeding air port is positioned at the below of pre-burner inner roof wall, and described three air outlets are arranged on the center of pre-burning furnace hearth wall.
4. the powder formula burner for pulverized coal that is threaded into according to claim 1, it is characterized in that, described rotation air port, comprise the sidewall that is installed in symmetrically described pre-burner and be used for secondary rotating air port to pre-burning furnace interior feeding secondary rotary wind, and be installed in described furnace roof fuse primer crater place and be used for providing to flame export four wind rotations of ring-type air port of four rotary winds of combustion-supporting oxygen.
5. the powder formula burner for pulverized coal that is threaded into according to claim 1, it is characterized in that, described a plurality of temperature sensor comprises the top temperature sensor that is installed in the described furnace roof fuse primer, and the bottom temperature sensor that is installed in described pre-burning furnace sidewall bottom.
6. each described powder formula burner for pulverized coal that is threaded into is characterized in that described furnace roof fuse primer comprises L shaped fuse primer according to claim 1-5, and the vertical end of described L shaped fuse primer is installed in the roof center of pre-burner.
7. the powder formula burner for pulverized coal that is threaded into according to claim 6 is characterized in that described pre-burner comprises the furnace wall, and the precombustion chamber that is positioned at inside, furnace wall; Described furnace wall comprises the body of heater shell, and the tubular high-temperature heat insulation layer that is arranged on described body of heater enclosure.
8. the powder formula burner for pulverized coal that is threaded into according to claim 7, it is characterized in that, described high-temperature heat insulation layer is the ring-type tubular construction, and the body of heater shell place that the horizontal ends that the vertical end of described L shaped fuse primer passes pre-burning furnace roof wall center, be positioned at the described L shaped fuse primer in air channel of furnace roof shell parcel is passed pre-furnace roof is crater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320087377 CN203249237U (en) | 2013-02-26 | 2013-02-26 | Spiral-input type pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320087377 CN203249237U (en) | 2013-02-26 | 2013-02-26 | Spiral-input type pulverized coal burner |
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| Publication Number | Publication Date |
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| CN203249237U true CN203249237U (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320087377 Expired - Fee Related CN203249237U (en) | 2013-02-26 | 2013-02-26 | Spiral-input type pulverized coal burner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148477A (en) * | 2013-02-26 | 2013-06-12 | 李延新 | Powder-screwing-in type pulverized coal combustion machine |
| CN104406187B (en) * | 2014-11-05 | 2016-08-24 | 衢州昀睿工业设计有限公司 | A kind of charging gear of coal burner |
-
2013
- 2013-02-26 CN CN 201320087377 patent/CN203249237U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148477A (en) * | 2013-02-26 | 2013-06-12 | 李延新 | Powder-screwing-in type pulverized coal combustion machine |
| CN103148477B (en) * | 2013-02-26 | 2015-09-23 | 李延新 | One is threaded into powder formula burner for pulverized coal |
| CN104406187B (en) * | 2014-11-05 | 2016-08-24 | 衢州昀睿工业设计有限公司 | A kind of charging gear of coal burner |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUAILAI TIGUI BONA TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LI YANXIN Effective date: 20140928 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100102 CHAOYANG, BEIJING TO: 075000 ZHANGJIAKOU, HEBEI PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140928 Address after: 075000, Hebei, Huailai County, Zhangjiakou Province East Garden Town, Huailai emerging industry demonstration zone, No. three North 6 Road Patentee after: Huailai Tigui Bona Technology Co., Ltd. Address before: 100102 Beijing city Chaoyang District Wangjing Lize Road No. 1 in Boya International Center A1603 Patentee before: Li Yanxin |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20200226 |