Article(id=1221467201345864114, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1221467200582500783, articleNumber=null, orderNo=null, doi=10.19666/j.rlfd.202212214, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=1669824000000, revisedDateStr=2022-12-01, acceptedDate=null, acceptedDateStr=null, onlineDate=1769150074564, onlineDateStr=2026-01-23, pubDate=1684944000000, pubDateStr=2023-05-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769150074564, onlineIssueDateStr=2026-01-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769150074564, creator=13701087609, updateTime=1769150074564, updator=13701087609, issue=Issue{id=1221467200582500783, tenantId=1146029695717560320, journalId=1210938733613449225, year='2023', volume='52', issue='5', pageStart='1', pageEnd='166', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769150074382, creator=13701087609, updateTime=1769157444393, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1221498112716226774, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1221467200582500783, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1221498112716226775, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1221467200582500783, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=37, endPage=47, ext={EN=ArticleExt(id=1221467203338158584, articleId=1221467201345864114, tenantId=1146029695717560320, journalId=1210938733613449225, language=EN, title=Study on coking prevention of supercritical 650 MW opposed firing boiler, columnId=1221467201333281201, journalTitle=Thermal Power Generation, columnName=Special topics on safe operation, fault diagnosis and treatment technology of power generation equipment, runingTitle=null, highlight=null, articleAbstract=

In order to effectively prevent the slagging of a supercritical 650 MW opposed firing boiler, the influence of different coal types on the flue gas temperature at the furnace outlet and the heat load of the boiler was checked by thermodynamic checking calculation, and the influence of the air distribution in the furnace and the cone-expanding angle of the burner on the flue gas dynamic field and flue temperature of the furnace was analyzed by CFD simulation. The results of the thermodynamic checking calculation showed that the boiler and the coal type were not the main reason for slagging. The variable air volume simulation showed that adjusting the ratio of internal and external secondary air could have effect on the dynamic field of flue gas. But in operation, changing the air volume did not solve the slagging problem well. The simulation results pointed out that the heat load of the water wall area could be reduced by reducing the cone-expanding angle of the burner from 45°to 30°, so as to inhibit the slagging. In the actual adjustment, after changing the cone expansion angle of the burner from 45°to 30°and adjusting the air distribution, the slagging situation of the boiler was greatly improved.The calculation results of variable SOFA wind showed that the appropriate reduction of SOFA wind proportion could reduce the flame height and the flue gas outlet temperature. The simulation of variable secondary air rotation showed that the secondary air rotation had a significant influence on the flow field and the slagging risk would significantly increase if the rotation of the burner was not arranged according to designed value. Further adjustments to SOFA wind ratio and secondary wind swirl could be considered in following adjustments.

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针对某超临界650 MW机组对冲燃烧锅炉结渣问题,通过热力计算校核不同煤种对其炉膛出口烟温及锅炉热负荷影响,采用计算流体力学(CFD)模拟计算分析炉内配风及燃烧器扩锥角对炉膛烟气动力场与烟温的影响。研究结果表明:锅炉设计参数及煤种不是该炉结渣的主要影响因素;变风量模拟结果表明调整内、外二次风比例可明显改变炉膛烟气动力场,但在实际调整过程中变风量对于抑制锅炉结渣效果不显著;变扩锥角模拟表明将燃烧器扩锥角由45°改为30°可降低水冷壁区域热负荷,可抑制燃烧器周围区域结渣;在现场实验中,将燃烧器扩锥角由45°改为30°并调整配风后,锅炉结渣情况得到大幅改善;适量降低SOFA风比例可以降低炉膛火焰中心高度及炉膛出口烟温;二次风旋向对炉内流场特性影响明显,在后续调整中可考虑针对SOFA风比例和二次风旋向作进一步调整。

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熊辉(1972),男,高级工程师,主要研究方向为燃煤电站锅炉诊断运行优化,

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熊辉(1972),男,高级工程师,主要研究方向为燃煤电站锅炉诊断运行优化,

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熊辉(1972),男,高级工程师,主要研究方向为燃煤电站锅炉诊断运行优化,

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超临界650 MW机组对冲燃烧锅炉结焦防控研究
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熊辉 1 , 宗涛 1 , 吴元元 1 , 毛志慧 1 , 黄德馨 2 , 江龙 2 , 胡松 2 , 向军 2
热力发电 | 发电设备安全运行、故障诊断及治理技术专题 2023,52(5): 37-47
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热力发电 | 发电设备安全运行、故障诊断及治理技术专题 2023, 52(5): 37-47
超临界650 MW机组对冲燃烧锅炉结焦防控研究
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熊辉1 , 宗涛1, 吴元元1, 毛志慧1, 黄德馨2, 江龙2, 胡松2, 向军2
作者信息
  • 1.湖北能源集团鄂州发电有限公司,湖北 鄂州 436006
  • 2.华中科技大学煤燃烧国家重点实验室,湖北 武汉 430074
  • 熊辉(1972),男,高级工程师,主要研究方向为燃煤电站锅炉诊断运行优化,

Study on coking prevention of supercritical 650 MW opposed firing boiler
Hui XIONG1 , Tao ZONG1, Yuanyuan WU1, Zhihui MAO1, Dexin HUANG2, Long JIANG2, Song HU2, Jun XIANG2
Affiliations
  • 1.Hubei Energy Group Ezhou Power Generation Co., Ltd., Ezhou 436006, China
  • 2.State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
出版时间: 2023-05-25 doi: 10.19666/j.rlfd.202212214
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针对某超临界650 MW机组对冲燃烧锅炉结渣问题,通过热力计算校核不同煤种对其炉膛出口烟温及锅炉热负荷影响,采用计算流体力学(CFD)模拟计算分析炉内配风及燃烧器扩锥角对炉膛烟气动力场与烟温的影响。研究结果表明:锅炉设计参数及煤种不是该炉结渣的主要影响因素;变风量模拟结果表明调整内、外二次风比例可明显改变炉膛烟气动力场,但在实际调整过程中变风量对于抑制锅炉结渣效果不显著;变扩锥角模拟表明将燃烧器扩锥角由45°改为30°可降低水冷壁区域热负荷,可抑制燃烧器周围区域结渣;在现场实验中,将燃烧器扩锥角由45°改为30°并调整配风后,锅炉结渣情况得到大幅改善;适量降低SOFA风比例可以降低炉膛火焰中心高度及炉膛出口烟温;二次风旋向对炉内流场特性影响明显,在后续调整中可考虑针对SOFA风比例和二次风旋向作进一步调整。

对冲燃烧锅炉  /  结焦防控  /  热力计算  /  数值模拟

In order to effectively prevent the slagging of a supercritical 650 MW opposed firing boiler, the influence of different coal types on the flue gas temperature at the furnace outlet and the heat load of the boiler was checked by thermodynamic checking calculation, and the influence of the air distribution in the furnace and the cone-expanding angle of the burner on the flue gas dynamic field and flue temperature of the furnace was analyzed by CFD simulation. The results of the thermodynamic checking calculation showed that the boiler and the coal type were not the main reason for slagging. The variable air volume simulation showed that adjusting the ratio of internal and external secondary air could have effect on the dynamic field of flue gas. But in operation, changing the air volume did not solve the slagging problem well. The simulation results pointed out that the heat load of the water wall area could be reduced by reducing the cone-expanding angle of the burner from 45°to 30°, so as to inhibit the slagging. In the actual adjustment, after changing the cone expansion angle of the burner from 45°to 30°and adjusting the air distribution, the slagging situation of the boiler was greatly improved.The calculation results of variable SOFA wind showed that the appropriate reduction of SOFA wind proportion could reduce the flame height and the flue gas outlet temperature. The simulation of variable secondary air rotation showed that the secondary air rotation had a significant influence on the flow field and the slagging risk would significantly increase if the rotation of the burner was not arranged according to designed value. Further adjustments to SOFA wind ratio and secondary wind swirl could be considered in following adjustments.

opposed firing supercritical boiler  /  slagging prevention and control  /  thermodynamic calculation  /  numerical simulation
熊辉, 宗涛, 吴元元, 毛志慧, 黄德馨, 江龙, 胡松, 向军. 超临界650 MW机组对冲燃烧锅炉结焦防控研究. 热力发电, 2023 , 52 (5) : 37 -47 . DOI: 10.19666/j.rlfd.202212214
Hui XIONG, Tao ZONG, Yuanyuan WU, Zhihui MAO, Dexin HUANG, Long JIANG, Song HU, Jun XIANG. Study on coking prevention of supercritical 650 MW opposed firing boiler[J]. Thermal Power Generation, 2023 , 52 (5) : 37 -47 . DOI: 10.19666/j.rlfd.202212214
2023年第52卷第5期
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doi: 10.19666/j.rlfd.202212214
  • 首发时间:2026-01-23
  • 出版时间:2023-05-25
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  • 修回日期:2022-12-01
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    1.湖北能源集团鄂州发电有限公司,湖北 鄂州 436006
    2.华中科技大学煤燃烧国家重点实验室,湖北 武汉 430074
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2种不同金属材料的力学参数

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属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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