CN102401373A - Three-volute high temperature oxygen rich pulverized coal ignition device - Google Patents
Three-volute high temperature oxygen rich pulverized coal ignition device Download PDFInfo
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- CN102401373A CN102401373A CN201010276123XA CN201010276123A CN102401373A CN 102401373 A CN102401373 A CN 102401373A CN 201010276123X A CN201010276123X A CN 201010276123XA CN 201010276123 A CN201010276123 A CN 201010276123A CN 102401373 A CN102401373 A CN 102401373A
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- temperature oxygen
- breeze airflow
- pulverized coal
- coal dust
- enriched gas
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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 invention discloses a three-volute high temperature oxygen rich pulverized coal ignition device applied to a pulverized coal boiler. A mode of mixing high temperature oxygen rich gas and pulverized coal airflow is adopted in the device, direct current high-concentration pulverized coal airflow of an ignition center pipe is directly heated through cyclone supplied high temperature oxygen rich gas, secondary cyclone pulverized coal airflow is ignited through the ignited pulverized coal of the center pipe, meanwhile, burn-out air is introduced in a cyclone mode through a burn-out air passage to ensure full combustion of the secondary pulverized coal airflow, and finally, the whole pulverized coal burner is ignited through the ignited secondary pulverized coal; and after the whole pulverized coal burner is ignited, the high temperature oxygen rich gas can be changed into combustion-supporting secondary air.
Description
Technical field
The present invention relates to a kind of three scroll casing type high-temperature oxygen-rich coal dust igniters that are applicable to pulverized-coal fired boiler.
Background technology
At present conventional pulverized-coal fired boiler adopts mostly is the igniting that the mode of fuel oil or combustion gas realizes coal burner.This mode is to be fuel with specific fuel oil or combustion gas, at first lights fuel oil or combustion gas through special igniter, through the fuel oil lighted or the combustion gas breeze airflow that ignites, realizes the igniting of coal burner then.The major defect of this mode is: in igniting and the steady combustion process of catching fire afterwards thereof, need to consume a large amount of fuel oil or combustion gas, financial cost is huge; Special igniter need be set be used to light fuel oil (gas) oil (gas) rifle, and the size of burner that existed in to a certain degree limit of igniter and fuel oil (gas) oil (gas) rifle, increase cost.
The present invention's three scroll casing type high-temperature oxygen-rich coal dust igniters can whole substitute equipment such as traditional igniter and fuel oil (gas) oil (gas) rifle, through mixing of high-temperature oxygen-enriched gas and breeze airflow, realize that directly the safety and stability of coal powder fired boiler burner is lighted a fire.
Summary of the invention
In order effectively to reduce the igniting cost of pulverized-coal fired boiler; Improve the security and the stability of ignition process; The mode that the present invention adopts high-temperature oxygen-enriched gas to mix with breeze airflow; The high-temperature oxygen-enriched gas that at first feeds through eddy flow directly adds thermal ignition central tube direct current high concentration pulverized coal air-flow; Through the second level rotational flow coal dust air-flow that ignites of the central tube coal dust after catching fire, feed after-flame wind through after-flame wind passage with cyclone mode simultaneously and fully burn then, finally through the second level coal dust that the catches fire whole coal burner that ignites to guarantee second level breeze airflow.After whole coal burner is lighted, can high-temperature oxygen-enriched gas be replaced with combustion-supporting secondary wind air.
The present invention's three scroll casing type high-temperature oxygen-rich coal dust igniters totally can be divided into parts such as central tube breeze airflow passage, high-temperature oxygen-enriched gas cyclone passage, second level breeze airflow eddy flow passage, after-flame wind eddy flow passage.Its course of work is following: when the high concentration pulverized coal air-flow blows out from central tube breeze airflow passage with the mode of directly blowing; High-temperature oxygen-enriched gas through after the heating blows out with cyclone mode through high-temperature oxygen-enriched gas cyclone passage, mixes mutually with the breeze airflow that central tube blows out; Along with the carrying out that mixes, the oxygen volume share of breeze airflow constantly increases, and ignition temperature constantly descends, and breeze airflow is by constantly heating simultaneously, and temperature constantly raises, and up to the ignition temperature that reaches breeze airflow, breeze airflow is lighted; Then; Breeze airflow eddy flow passage blows out second level breeze airflow from the second level with cyclone mode; The central tube coal dust that has been caught fire ignites, and meanwhile, after-flame wind feeds to guarantee that second level breeze airflow fully burns with cyclone mode through after-flame wind eddy flow passage; Finally, through the second level coal dust that the catches fire whole coal burner that ignites.After whole coal burner is lighted, stop the output of high-temperature oxygen-enriched gas, it is replaced with combustion-supporting secondary wind air, adjust the burner flow field simultaneously, effectively realize steady combustion.
The advantage of the present invention's three scroll casing type high-temperature oxygen-rich coal dust igniters is following:
1. do not need special igniter fuels such as fuel oil or combustion gas, reduced the igniting cost of pulverized-coal fired boiler effectively;
2. do not need special igniter and fuel oil (gas) oil (gas) rifle,, reduced equipment cost simultaneously yet for the design of burner provides convenience;
3. can adapt to the needs of lighting different coals through changing the high-temperature oxygen-enriched gas oxygen concentration of using;
4. the central tube coal dust burns in oxygen-enriched environment, and its ignition temperature height, radiation and heat convection ability are strong, form high-temperature region effectively easily, for lighting of second level breeze airflow provides advantage;
5. after whole coal burner is lighted,, can effectively adjust the fire location of burner flow field, change breeze airflow, guarantee effectively to realize steady the combustion through speed and the swirl strength that changes combustion-supporting secondary wind.
Description of drawings
Accompanying drawing 1 is sketch mapes of apparatus of the present invention with accompanying drawing 2.
Reference numeral: 1, central tube breeze airflow passage; 2, high-temperature oxygen-enriched gas cyclone spiral case; 3, high-temperature oxygen-enriched gas cyclone circular passage; 4, second level breeze airflow eddy flow spiral case; 5, second level breeze airflow rotational flow ring passage; 6, after-flame wind eddy flow spiral case; 7, after-flame wind rotational flow ring passage; 8, after-flame wind eddy flow spout; 9, high-temperature oxygen-enriched gas cyclone spout; 10, central tube breeze airflow direct current spout; 11, central tube reamer.
The specific embodiment
As shown in the figure, three scroll casing type high-temperature oxygen-rich coal dust igniters by 1, central tube breeze airflow passage; 2, high-temperature oxygen-enriched gas cyclone spiral case; 3, high-temperature oxygen-enriched gas cyclone circular passage; 4, second level breeze airflow eddy flow spiral case; 5, second level breeze airflow rotational flow ring passage; 6, after-flame wind eddy flow spiral case; 7, after-flame wind rotational flow ring passage; 8, after-flame wind eddy flow spout; 9, high-temperature oxygen-enriched gas cyclone spout; 10, central tube breeze airflow direct current spout; 11, the central tube reamer is formed.The concrete size of each several part changes with coal, the isoparametric variation of igniting power: the sectional dimension of each breeze airflow passage is calculated by its corresponding power, primary wind and powder concentration, primary air velocity degree, and the temperature of high-temperature oxygen-enriched gas, oxygen concentration and circular passage size thereof are calculated by central tube breeze gas flow temperature, speed, pulverized-coal concentration.
As shown in the figure; The concrete running of three scroll casing type high-temperature oxygen-rich coal dust igniters is: at first the breeze airflow of high concentration blows out with the mode of directly blowing from central tube coal dust passage 1; And at the guide functions lower edge certain angle of central tube breeze airflow direct current spout 10 and central tube reamer 11 to external diffusion; Meanwhile; High-temperature oxygen-enriched gas blows out with cyclone mode through high-temperature oxygen-enriched gas cyclone spiral case 2 and high-temperature oxygen-enriched gas cyclone circular passage 3, under the guide functions of high-temperature oxygen-enriched gas cyclone spout 9, mixes mutually with breeze airflow that central tube blows out, and adds thermal ignition central tube breeze airflow; Then; Second level breeze airflow blows out with cyclone mode through second level breeze airflow eddy flow spiral case 4 and second level breeze airflow rotational flow ring passage 5; The central tube coal dust that has been caught fire ignites, and meanwhile, after-flame wind blows out with cyclone mode through after-flame wind eddy flow spiral case 6 and after-flame wind rotational flow ring passage 7; And under the guide functions of after-flame wind eddy flow spout 8, fully mix with second level breeze airflow, guarantee the abundant burning of second level coal dust.So far, three scroll casing type high-temperature oxygen-rich coal dust igniters are lighted, just can light whole coal burner through it afterwards.After whole coal burner is lighted, high-temperature oxygen-enriched gas is replaced with combustion-supporting secondary wind air, through changing the speed and the swirl strength of combustion-supporting secondary wind, the fire location of adjustment burner flow field, change breeze airflow guarantees effectively to realize steady the combustion simultaneously.
Claims (5)
1. three scroll casing type high-temperature oxygen-rich coal dust igniters are characterised in that: the mode that adopts high-temperature oxygen-enriched gas to mix with breeze airflow; Directly add the thermal ignition breeze airflow and realize igniting, do not use other igniters such as any igniter or oil (gas) rifle in the whole process.
2. three scroll casing type high-temperature oxygen-rich coal dust igniters according to claim 1; In ignition process, it is characterized in that: the mode that adopts high-temperature oxygen-enriched gas to mix with breeze airflow; The high-temperature oxygen-enriched gas that at first feeds through eddy flow directly adds thermal ignition central tube direct current high concentration pulverized coal air-flow; Then through the second level rotational flow coal dust air-flow that ignites of the central tube coal dust after catching fire; Feed after-flame wind through after-flame wind passage with cyclone mode simultaneously and fully burn, finally through the second level coal dust that the catches fire whole coal burner that ignites to guarantee second level breeze airflow.
3. according to claim 1,2 described three scroll casing type high-temperature oxygen-rich coal dust igniters; It is characterized in that: after whole coal burner is lighted; Can high-temperature oxygen-enriched gas be replaced with combustion-supporting secondary wind air, adjust the burner flow field to realize steady combustion through the speed and the swirl strength that change combustion-supporting secondary wind simultaneously.
4. according to claim 1,2 described three scroll casing type high-temperature oxygen-rich coal dust igniters; Its architectural feature is: three scroll casing type high-temperature oxygen-rich coal dust igniters are made up of central tube breeze airflow passage (1), high-temperature oxygen-enriched gas cyclone spiral case (2), high-temperature oxygen-enriched gas cyclone circular passage (3), second level breeze airflow eddy flow spiral case (4), second level breeze airflow rotational flow ring passage (5), after-flame wind eddy flow spiral case (6), after-flame wind rotational flow ring passage (7), after-flame wind eddy flow spout (8), high-temperature oxygen-enriched gas cyclone spout (9), central tube breeze airflow direct current spout (10), central tube reamer (11), and the concrete size of each several part changes with coal, the isoparametric variation of igniting power.
5. according to claim 1,2,4 described three scroll casing type high-temperature oxygen-rich coal dust igniters; It is characterized in that: the sectional dimension of each breeze airflow passage is calculated by its corresponding coal, power, primary wind and powder concentration, primary air velocity degree, and the temperature of high-temperature oxygen-enriched gas, oxygen concentration and circular passage size thereof are calculated by central tube breeze gas flow temperature, speed, pulverized-coal concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010276123XA CN102401373A (en) | 2010-09-09 | 2010-09-09 | Three-volute high temperature oxygen rich pulverized coal ignition device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010276123XA CN102401373A (en) | 2010-09-09 | 2010-09-09 | Three-volute high temperature oxygen rich pulverized coal ignition device |
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| CN102401373A true CN102401373A (en) | 2012-04-04 |
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| CN201010276123XA Pending CN102401373A (en) | 2010-09-09 | 2010-09-09 | Three-volute high temperature oxygen rich pulverized coal ignition device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620292A (en) * | 2012-04-23 | 2012-08-01 | 哈尔滨工业大学 | High-temperature oxygen-rich igniting flame stabilizer for pulverized coal |
| CN104235837A (en) * | 2014-09-24 | 2014-12-24 | 株洲火炬工业炉有限责任公司 | Dual-cyclone mixed oxygen enrichment coal injection pipe for cement clinker rotary kiln |
| CN106642096A (en) * | 2016-12-08 | 2017-05-10 | 哈尔滨工业大学 | Fuel graded local oxygen-enriched rotational flow pulverized coal burner |
| CN107228356A (en) * | 2017-07-06 | 2017-10-03 | 山西大学 | A kind of automatic stable burning system for opposed firing boiler |
| CN107246607A (en) * | 2017-07-06 | 2017-10-13 | 山西大学 | A kind of automatic stable burning system for Process In A Tangential Firing |
| CN107541299A (en) * | 2017-09-14 | 2018-01-05 | 中国华能集团清洁能源技术研究院有限公司 | A kind of four-way process burner for double-section dry coal powder pressure gasifying technology |
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| RU2043493C1 (en) * | 1991-12-06 | 1995-09-10 | Институт горного дела им.А.А.Скочинского | Method for lighting up of coal seam |
| CN1752524A (en) * | 2004-09-21 | 2006-03-29 | 北京国力能高科技有限公司 | High-temp oxygen-enriched air fire lighting method for coal powder boiler and device thereof |
| KR20100006609A (en) * | 2008-07-10 | 2010-01-21 | 박대용 | A coal burner of unnecessary preheating coal dust by combustion method |
| CN201412841Y (en) * | 2009-05-22 | 2010-02-24 | 胡旭辉 | Industrial boiler cyclone multistage type coal dust burner |
| CN101799172A (en) * | 2010-03-02 | 2010-08-11 | 哈尔滨工业大学 | High-temperature oxygen-rich coal dust grading ignition device |
-
2010
- 2010-09-09 CN CN201010276123XA patent/CN102401373A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2043493C1 (en) * | 1991-12-06 | 1995-09-10 | Институт горного дела им.А.А.Скочинского | Method for lighting up of coal seam |
| CN1752524A (en) * | 2004-09-21 | 2006-03-29 | 北京国力能高科技有限公司 | High-temp oxygen-enriched air fire lighting method for coal powder boiler and device thereof |
| KR20100006609A (en) * | 2008-07-10 | 2010-01-21 | 박대용 | A coal burner of unnecessary preheating coal dust by combustion method |
| CN201412841Y (en) * | 2009-05-22 | 2010-02-24 | 胡旭辉 | Industrial boiler cyclone multistage type coal dust burner |
| CN101799172A (en) * | 2010-03-02 | 2010-08-11 | 哈尔滨工业大学 | High-temperature oxygen-rich coal dust grading ignition device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620292A (en) * | 2012-04-23 | 2012-08-01 | 哈尔滨工业大学 | High-temperature oxygen-rich igniting flame stabilizer for pulverized coal |
| CN104235837A (en) * | 2014-09-24 | 2014-12-24 | 株洲火炬工业炉有限责任公司 | Dual-cyclone mixed oxygen enrichment coal injection pipe for cement clinker rotary kiln |
| CN106642096A (en) * | 2016-12-08 | 2017-05-10 | 哈尔滨工业大学 | Fuel graded local oxygen-enriched rotational flow pulverized coal burner |
| CN107228356A (en) * | 2017-07-06 | 2017-10-03 | 山西大学 | A kind of automatic stable burning system for opposed firing boiler |
| CN107246607A (en) * | 2017-07-06 | 2017-10-13 | 山西大学 | A kind of automatic stable burning system for Process In A Tangential Firing |
| CN107228356B (en) * | 2017-07-06 | 2023-05-30 | 山西大学 | Automatic stable combustion system for opposite-flushing boiler |
| CN107246607B (en) * | 2017-07-06 | 2023-05-30 | 山西大学 | Automatic stable combustion system for four-corner tangential boiler |
| CN107541299A (en) * | 2017-09-14 | 2018-01-05 | 中国华能集团清洁能源技术研究院有限公司 | A kind of four-way process burner for double-section dry coal powder pressure gasifying technology |
| CN107541299B (en) * | 2017-09-14 | 2023-07-07 | 中国华能集团清洁能源技术研究院有限公司 | Four-way process burner for two-section type dry pulverized coal pressurized gasification technology |
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Application publication date: 20120404 |