CN201059598Y - Blunt body micro-oil-gasification ignition combusting device - Google Patents
Blunt body micro-oil-gasification ignition combusting device Download PDFInfo
- Publication number
- CN201059598Y CN201059598Y CNU2007201254049U CN200720125404U CN201059598Y CN 201059598 Y CN201059598 Y CN 201059598Y CN U2007201254049 U CNU2007201254049 U CN U2007201254049U CN 200720125404 U CN200720125404 U CN 200720125404U CN 201059598 Y CN201059598 Y CN 201059598Y
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- Prior art keywords
- combustion chamber
- chamber
- burner
- bluff body
- firing
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Abstract
The utility model discloses a blunt body micro-oil gasification start-up burner used on a pulverized coal firing boiler, comprising a blunt body exiting chamber, a powder delivery pipe bend, a coal dust concentrator, a burner shell, a primary combustion chamber, a secondary combustion chamber, a tertiary combustion chamber, and a lighter, wherein, the powder delivery pipe bend is fixedly connected with the burner shell through a flange; the primary combustion chamber and the secondary combustion chamber are connected in turn to and fixed on the inside of the burner shell and make the end piece of the shell form the tertiary combustion chamber; the blunt body exiting chamber is connected on the powder delivery pipe bend and is in the same axial direction with the flange and multilevel combustion chambers; the lighter consists of a high pressure air pipe joint, a fuel pipe joint, a compressed air pipe joint, a rod body and a firing head and can move in the blunt body exiting chamber, the powder delivery pipe bend and the primary combustion chamber; the firing head is a conical blunt body. High temperature flue gas return currents are formed on a firing zone on the rear of the blunt body, thereby the firing and burning effect of the coal dust can be strengthened and the oil amount used for firing can be further reduced, and the utility model is suitable for anthracite and low-volatile faulty coals.
Description
Technical field:
The utility model relates to the little oil gas start-up burner of a kind of bluff body that uses on pulverized-coal fired boiler.
Background technology:
Energy-saving and emission-reduction are the world subjects in the social modern development.The economizing on coal of large coal powder boiler, fuel-saving technique are extremely important, because fuel oil is in short supply day by day, expensive, in order to save fuel oil, domestic successful has been developed plasma non-oil ignition technology, the few oil of small oil gun directly firing coal-dust technology, little oil gas firing coal-dust technology.
Plasma non-oil ignition technology is applicable to high-volatile bituminous coal, brown coal, but there is system complex in it, and investment is big, gets angry that parts easily pollute, scaling loss etc., and also is not suitable for anthracite, low-volatile coal etc. at present.Small oil gun few-oil ignition technology has obtained using comparatively widely on boiler, and equipment investment is few, and the reliability height is practical.Little oil gas firing coal-dust technology is the development of small oil gun firing technique, and the ignition temperature of gasified fuel is higher, has improved the pyrolysis to coal dust during igniting, and is more fuel-efficient during firing coal-dust.
Present little oil burner has all adopted multistage sleeve structure, forms multistage pulverized coal combustor, with the effect that realizes that fractional combustion, air-flow cool off, light step by step.Sum up the oil gun arrangement form of domestic little oily coal dust start-up burner, for following several:
(1) oil gun is placed the outer oil combustion chamber of airduct, make the gasification of fuel oil burning produce thermal-flame, again the fuel oil flame of high temperature is sprayed in airduct, with firing coal-dust airflow.As patent ZL03255982.5 and ZL200520101974.5.
(2) will gasify in the one-level combustion chamber sleeve pipe of the direct insertion point of oil gun ignition combustor, make the direct firing coal-dust airflow of fuel oil flame.
(3) the bigger tubulose gasification of fuel oil combustion chamber of oil gun and diameter of will gasifying is inserted in the one-level combustion chamber sleeve pipe of start-up burner together, makes the breeze airflow in the high temperature fuel oil flame ignition one-level sleeve pipe.
More than several modes, all do not adopt the high temperature gases recirculating technology to strengthen ignition to coal dust, therefore, present disclosed tiny-oil ignition technology is incompatibility anthracite, low-volatile coal inferior etc. still.
The utility model content:
The purpose of this utility model provides a kind of ignition effect that can strengthen coal dust, adapts to the little oil gas start-up burner of bluff body of anthracite, low-volatile coal inferior.
In order to realize above-mentioned purpose, the utility model comprises: bluff body withdraws from chamber, powder feeding pipe elbow, pulverized coal concentrator, burner housing, one-level combustion chamber, secondary combustion chamber, three grades of combustion chambers, igniter, the powder feeding pipe elbow is fixedlyed connected with burner housing by flange, one-level combustion chamber, secondary combustion chamber connect successively and are fixed on burner housing inside, and make the latter end of shell form three grades of combustion chambers; On the powder feeding pipe elbow, be connected with bluff body and withdraw from the chamber, bluff body withdraws from chamber and flange and composite chamber and is in same axial, igniter is made of high-pressure air hose joint, fuel oil pipe connector, compressed air pipe joint, the body of rod, igniter head, igniter can withdraw from chamber, powder feeding pipe elbow and the one-level combustion chamber at bluff body and move, and igniter head is coniform bluff body.
Like this, adopt multistage sleeve pipe mode, form multistage pulverized coal combustor, one-level combustion chamber diameter minimum is amplified afterwards step by step.This burner is general to adopt three grades of layouts, and can determine increase and decrease according to coal and field condition.When a wind breeze airflow enters burner through conveyance conduit, behind the pulverized coal concentrator that has passed through the combustor inlet setting, shunted by multistage sleeve pipe, one (thick coal culm air-flow) enters the one-level combustion chamber and lighted, one directly enters secondary combustion chamber as adherent air film cooling air, and one directly enters three grades of combustion chambers as adherent air film cooling air; When the breeze airflow that the one-level combustion chamber is lighted is broken through secondary combustion chamber and cooling air converge and light, when breaking through three grades of combustion chambers and its cooling air converge and light, then flow into burner hearth.Flow into the cooling air air-flow of secondary combustion chamber, cooling one-level outer wall of combustion chamber cools off the secondary firing chamber interior walls to prevent slagging scorification again to reduce temperature earlier; Flow into the cooling air air-flow of three grades of combustion chambers, cooling secondary firing chamber outer wall cools off three grades of combustion chamber inwalls to prevent slagging scorification again to reduce temperature earlier.The air film cooling air that the utility model adopts is wind one time, rather than secondary wind, and the utilization of energy is abundant more, concentrated, reasonable.Three grades of combustion chambers and burner housing form one, and the other end of shell is connected with powder feeding pipes, and is simple in structure.
In use, when igniter head extend into when lighting a fire in the sleeve pipe of one-level combustion chamber, oil flame sprays from the air channel, bottom of coniform bluff body, a wind breeze airflow is through behind the coniform bluff body and oily flame interflow, because the backflow effect of coniform bluff body, behind coniform bluff body, form the high temperature gases recirculating district, make a wind breeze airflow catch fire and burning is strengthened, the breeze airflow of one-level combustion chamber catches fire strongly, help the subsequent stages combustion chamber fire burns, can be when boiler cold-state starts direct firing coal-dust, when the boiler ultra-low load, have steady combustion ability.Therefore, can adapt to the needs of lighting anchracite duff and low-volatile coal dust.When using the utility model to light bituminous coal will more fuel-efficient, compare with conventional igniter, but for the general fuel-economizing of bituminous coal more than 95%, but for the general fuel-economizing of meager coal more than 90%, but for generally fuel-economizing more than 85% of anthracite.
Bluff body gasification tiny-oil ignition head can stretch in burner, can suitably adjust ignition location, also can work as finish after lighting a fire after, igniter is withdrawed from the air channel one time, prevent that igniter from wearing and tearing, and help normal operation.After this burner is finished ignition of the boiler, can be used as the main burner operation, system is simple, has realized that start-up burner and main burner are integrated.
When boiler cold-state starts, light a large amount of coal dust (2-5t/h) with the oil (10-110kg/h) of trace.Because amount of fuel is small, can drop into the electric cleaner operation behind the pulverized coal ignition, help environmental protection, practical.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
The specific embodiment:
As shown in Figure 1, the utility model comprises: bluff body withdraws from chamber 4, powder feeding pipe elbow 5, pulverized coal concentrator 7, burner housing 8, one-level combustion chamber 10, secondary combustion chamber 11, three grades of combustion chambers 12, igniter 9.Powder feeding pipe elbow 5 is fixedlyed connected with burner housing 8 by flange 6, and one-level combustion chamber 10, secondary combustion chamber 11 connect successively and be fixed on burner housing 8 inside, and the latter end of shell is that burner outlet portion forms three grades of combustion chambers; Diameter becomes greatly successively, fixedlys connected by bearing rib 13 between one-level combustion chamber 10, secondary combustion chamber 11 and the burner housing 8.Pulverized coal concentrator 7 is arranged on the porch of burner housing 8.Be connected with bluff body and withdraw from chamber 4 on powder feeding pipe elbow 5, bluff body withdraws from chamber 4 and is in same axial with flange 6 and one-level combustion chamber 10.Igniter is made of high-pressure air hose joint 1, fuel oil pipe connector 14, compressed air pipe joint 15, the body of rod 3, igniter head 9, igniter can withdraw from chamber 4, powder feeding pipe elbow 5 and the one-level combustion chamber 10 at bluff body and move, igniter head 9 is coniform bluff body, and coniform bluff body drift angle is set to 15 °--be advisable for 50 °.The body of rod 3 inside are provided with transportation pipe, high-pressure blast carrier pipe, are provided with gasification oil gun, oil gas atomizing mixing tube in igniter head 9, and the oil gun shower nozzle is connecting oil gas atomizing mixing tube, transportation pipe, high-pressure blast carrier pipe successively.Chamber flange 2 is withdrawed from dependence, and igniter can telescopic moving in burner, can suitably adjust ignition location, also can work as the igniting after finish after, igniter head is withdrawed from one-level combustion chamber 10, make igniter head 9 be seated in bluff body and withdraw from the chamber 4, prevent wearing and tearing, and help normal operation.The bluff body igniter relies on the less tubulose body of rod of diameter, can stretch in burner, and can withdraw from airduct one time, and is easy to maintenance.Burner is that the flange form assembling is connected with an airduct, installs simple.That burner housing, combustion chamber at different levels, igniter head all adopt is wear-resisting, heatproof, corrosion-resistant steel processing and fabricating.
This is suitable for the novel multistage sleeve pipe mode that also can adopt, and forms multistage pulverized coal combustor, according to different atures of coal, different combustion characteristics, designs different primary air flow that enters combustion chambers at different levels and fuel quantity, forms different ratios; The ature of coal difference, each level length of sum of series that the combustion chamber is set is also different.
Claims (3)
1. little oil gas start-up burner of bluff body, comprise: bluff body withdraws from chamber (4), powder feeding pipe elbow (5), pulverized coal concentrator (7), burner housing (8), one-level combustion chamber (10), secondary combustion chamber (11), three grades of combustion chambers (12), igniter, powder feeding pipe elbow (5) is fixedlyed connected with burner housing (8) by flange (6), one-level combustion chamber (10), secondary combustion chamber (11) connect successively and are fixed on burner housing (8) inside, and the latter end of shell forms three grades of combustion chambers (12); On powder feeding pipe elbow (5), be connected with bluff body and withdraw from chamber (4), bluff body withdraws from chamber (4) and is in same axial with flange (6) and one-level combustion chamber (10), igniter is made of high-pressure air hose joint (1), fuel oil pipe connector (14), compressed air pipe joint (15), the body of rod (3), igniter head (9), it is mobile to it is characterized in that igniter can withdraw from chamber (4), powder feeding pipe elbow (5) and one-level combustion chamber (10) at bluff body, and igniter head (9) is coniform bluff body.
2. the little oil gas start-up burner of bluff body according to claim 1 is characterized in that pulverized coal concentrator (7) is arranged on the porch of burner housing (8).
3. according to the little oil gas start-up burner of the described bluff body of claim 1, it is characterized in that coniform bluff body drift angle is set to 15 °-50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201254049U CN201059598Y (en) | 2007-07-07 | 2007-07-07 | Blunt body micro-oil-gasification ignition combusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201254049U CN201059598Y (en) | 2007-07-07 | 2007-07-07 | Blunt body micro-oil-gasification ignition combusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201059598Y true CN201059598Y (en) | 2008-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201254049U Expired - Fee Related CN201059598Y (en) | 2007-07-07 | 2007-07-07 | Blunt body micro-oil-gasification ignition combusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201059598Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009143725A1 (en) * | 2008-05-29 | 2009-12-03 | 徐州燃烧控制研究院有限公司 | An internal-burning type firing pulverized coal burner |
| CN101881441A (en) * | 2010-06-18 | 2010-11-10 | 王兴道 | Gasification combustion hydrolyzing auxiliary combustion device and method of pulverized coal |
| CN102374528A (en) * | 2010-08-16 | 2012-03-14 | 烟台龙源电力技术股份有限公司 | Internal-combustion burner and method for improving internal combustion efficiency of internal-combustion burner |
| CN102401372A (en) * | 2010-09-08 | 2012-04-04 | 烟台龙源电力技术股份有限公司 | Bed ignition burner of fluidized bed |
| CN108870385A (en) * | 2018-08-02 | 2018-11-23 | 贵州富燃环保科技有限公司 | A kind of fractional combustion coal burner surely fired certainly |
-
2007
- 2007-07-07 CN CNU2007201254049U patent/CN201059598Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009143725A1 (en) * | 2008-05-29 | 2009-12-03 | 徐州燃烧控制研究院有限公司 | An internal-burning type firing pulverized coal burner |
| CN101881441A (en) * | 2010-06-18 | 2010-11-10 | 王兴道 | Gasification combustion hydrolyzing auxiliary combustion device and method of pulverized coal |
| CN101881441B (en) * | 2010-06-18 | 2013-03-27 | 王兴道 | Gasification combustion hydrolyzing auxiliary combustion device and method of pulverized coal |
| CN102374528A (en) * | 2010-08-16 | 2012-03-14 | 烟台龙源电力技术股份有限公司 | Internal-combustion burner and method for improving internal combustion efficiency of internal-combustion burner |
| CN102374528B (en) * | 2010-08-16 | 2014-01-01 | 烟台龙源电力技术股份有限公司 | Internal-combustion burner and method for improving internal combustion efficiency of internal-combustion burner |
| CN102401372A (en) * | 2010-09-08 | 2012-04-04 | 烟台龙源电力技术股份有限公司 | Bed ignition burner of fluidized bed |
| CN102401372B (en) * | 2010-09-08 | 2013-12-04 | 烟台龙源电力技术股份有限公司 | Bed ignition burner of fluidized bed |
| CN108870385A (en) * | 2018-08-02 | 2018-11-23 | 贵州富燃环保科技有限公司 | A kind of fractional combustion coal burner surely fired certainly |
| CN108870385B (en) * | 2018-08-02 | 2023-12-22 | 贵州富燃环保科技有限公司 | Self-stabilizing combustion staged combustion pulverized coal burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080514 Termination date: 20110707 |