Article(id=1199661551331406444, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1199661546335994621, articleNumber=1009-5438(2022)01-0031-03, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1634572800000, receivedDateStr=2021-10-19, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1763951202471, onlineDateStr=2025-11-24, pubDate=1645718400000, pubDateStr=2022-02-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1763951202471, onlineIssueDateStr=2025-11-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1763951202471, creator=13701087609, updateTime=1763951202471, updator=13701087609, issue=Issue{id=1199661546335994621, tenantId=1146029695717560320, journalId=1185652524569653253, year='2022', volume='48', issue='1', pageStart='1', pageEnd='98', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1763951201279, creator=13701087609, updateTime=1763959528511, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1199696473341391309, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1199661546335994621, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1199696473341391310, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1199661546335994621, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=31, endPage=33, ext={EN=ArticleExt(id=1199661552275124852, articleId=1199661551331406444, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Production Practices on Reducing Unit Process Energy Consumption of 4 150 m3 Blast Furnace of Baotou Steel, columnId=1187340472918880861, journalTitle=Science & Technology of Baotou Steel, columnName=Production Practice and Management, runingTitle=null, highlight=null, articleAbstract=

In this paper, the production practices on reducing unit process energy consumption of 4 150 m3 blast furnace of Baotou Steel are analyzed and summarized. The unit process energy consumption of molten iron in 2021 reduced by 9.26 kgce/t compared with that in 2020 through strengthening the quality management of furnace burden, recovery of waste heat and power, technology-improving of energy saving and energy-saving management as well as reducing power consumption and making full use of secondary energy sources so that better economic benefits are achieved.

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文章对包钢4 150 m3高炉降低工序能耗生产实践进行了分析和总结。通过强化入炉炉料质量的管理、加强余热余电回收、节能技术改造以及强化节能管理工作,降低动力消耗,充分利用二次能源,2021年铁水工序能耗较2020年降低9.26 kgce/t,取得了较好的经济效益。

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高靖文(1984-),男,内蒙古锡林郭勒盟人,工程师,现从事高炉炼铁工作。

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高靖文(1984-),男,内蒙古锡林郭勒盟人,工程师,现从事高炉炼铁工作。

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高靖文(1984-),男,内蒙古锡林郭勒盟人,工程师,现从事高炉炼铁工作。

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时间 工序能耗
2020年全年 360.11
2021年1月 359.97
2021年2月 358.90
2021年3月 351.77
2021年4月 348.46
2021年5月 340.85
2021年6月 348.96
2021年7月 363.89
2021年8月 358.91
2021年9月 351.84
2021年10月 342.87
2021年11月 340.59
2021年12月 343.13
2021年全年 350.85
2021年与2020年差值 -9.26
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高炉工序能耗 kgce/t

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时间 工序能耗
2020年全年 360.11
2021年1月 359.97
2021年2月 358.90
2021年3月 351.77
2021年4月 348.46
2021年5月 340.85
2021年6月 348.96
2021年7月 363.89
2021年8月 358.91
2021年9月 351.84
2021年10月 342.87
2021年11月 340.59
2021年12月 343.13
2021年全年 350.85
2021年与2020年差值 -9.26
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包钢4 150 m3高炉降低工序能耗生产实践
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高靖文 , 渠世平 , 闫风 , 曲云玉 , 武永平 , 高瑞平 , 罗海泉
包钢科技 | 生产实践与管理 2022,48(1): 31-33
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包钢科技 | 生产实践与管理 2022, 48(1): 31-33
包钢4 150 m3高炉降低工序能耗生产实践
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高靖文, 渠世平, 闫风, 曲云玉, 武永平, 高瑞平, 罗海泉
作者信息
  • 内蒙古包钢稀土钢板材有限责任公司,内蒙古 包头 014010
  • 高靖文(1984-),男,内蒙古锡林郭勒盟人,工程师,现从事高炉炼铁工作。

Production Practices on Reducing Unit Process Energy Consumption of 4 150 m3 Blast Furnace of Baotou Steel
Jing-wen Gao, Shi-ping Qu, Feng Yan, Yun-yu Qu, Yong-ping Wu, Rui-ping Gao, Hai-quan Luo
Affiliations
  • Inner Mongolia Baotou Steel Rare Earth Steel Plate Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
出版时间: 2022-02-25
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文章对包钢4 150 m3高炉降低工序能耗生产实践进行了分析和总结。通过强化入炉炉料质量的管理、加强余热余电回收、节能技术改造以及强化节能管理工作,降低动力消耗,充分利用二次能源,2021年铁水工序能耗较2020年降低9.26 kgce/t,取得了较好的经济效益。

大型高炉  /  工序能耗  /  稳定顺行  /  节能管理

In this paper, the production practices on reducing unit process energy consumption of 4 150 m3 blast furnace of Baotou Steel are analyzed and summarized. The unit process energy consumption of molten iron in 2021 reduced by 9.26 kgce/t compared with that in 2020 through strengthening the quality management of furnace burden, recovery of waste heat and power, technology-improving of energy saving and energy-saving management as well as reducing power consumption and making full use of secondary energy sources so that better economic benefits are achieved.

large blast furnace  /  unit process energy consumption  /  stable trouble-free operation  /  energy-saving management
高靖文, 渠世平, 闫风, 曲云玉, 武永平, 高瑞平, 罗海泉. 包钢4 150 m3高炉降低工序能耗生产实践. 包钢科技, 2022 , 48 (1) : 31 -33 .
Jing-wen Gao, Shi-ping Qu, Feng Yan, Yun-yu Qu, Yong-ping Wu, Rui-ping Gao, Hai-quan Luo. Production Practices on Reducing Unit Process Energy Consumption of 4 150 m3 Blast Furnace of Baotou Steel[J]. Science & Technology of Baotou Steel, 2022 , 48 (1) : 31 -33 .
包钢稀土钢板材有限责任公司现有2座有效容积为4 150 m3的大型高炉,设计年产生铁720万t。高炉本体设计为全冷却壁结构、38个风口,采用软水密闭循环冷却;设置平坦化的矩形双出铁场、4个出铁口,与其配套有两套俄罗斯圆盘法水渣处理系统,热风炉系统配置4座卡卢金(Kalugin)顶燃式热风炉,整体装备水平较高。但随着钢铁企业竞争日益激烈及响应国家碳达峰、碳中和号召,后续生产降低能耗是重点。2021年通过加强原燃料管理,开展技术创新,实现高炉稳定顺行;加强动力消耗管控,开展降低氮气消耗攻关,降低冲渣水消耗,同时加强能源的二次回收利用,稳定操作制度,统一四班操作,炼铁工序能耗大幅下降。
工序能耗是指钢铁生产过程中的某一基本工序中,生产单位产品所消耗的能源总量,是衡量整个工序能耗高低的重要指标[1]。炼铁工序能耗主要由燃料消耗、能源介质消耗及资源回收利用三部分组成[2]。燃料消耗包括焦炭、焦丁、无烟煤、烟煤消耗;能源消耗包括高炉煤气、氧气、水、蒸气、氮气等消耗;资源回收包括高炉煤气回收和TRT发电。其中燃料消耗占比62%,动力消耗占比10%,回收项占比28%。
高炉生产以稳定顺行为基础,稳定顺行是高炉生产的灵魂,也是高炉获得良好经济指标的前提条件。
根据高炉用料的变化情况,统筹管理,做好入炉料的平衡调配,保证高炉用料的稳定供应。严格控制高炉用烧结矿、球团矿、焦炭的槽位,原料系统保持入炉料槽位在50%以上,减少入炉料二次摔碎现象。强化筛网管理,控制烧结矿备料速度在1.3~1.5 t/min,焦炭备料速度不大于0.5 t/min,对澳矿过筛情况加强检查,发现有堵筛片情况,及时处理,从而提高入炉原燃料筛分效果,减少入炉粉末,为高炉稳定顺行奠定基础。
稳定既定操作制度,利用高风温、喷煤等措施保证炉缸活跃、炉温稳定和降硅操作,严格执行既定的操作方针,确保炉况顺行。严禁低料线作业,严格控制班料批差,统一四班操作。根据工艺实际情况,合理调整送风面积,以提高风速和鼓风动能,将实际风速提高并稳定在240 m/s以上,从而保证吹透中心及中心煤气流的稳定;确保全风口喷煤,提高高炉的稳定性和适应能力。
长期冶炼实践证明,为保证高炉炉缸热量充沛,要把铁水物理温度放在首要位置,保证铁水的物理温度在1 500 ℃以上,铁水Si含量按照操作方针严格控制,坚决杜绝出现连续低炉温。如若发生低炉温,先提高炉温,再进行其他调节,保证炉缸的热状态和活跃度,提高高炉抗波动能力。
高炉操作人员对外加强与原燃料化验和喷煤主控等部门的信息沟通,及时了解原燃料成分的变化,争取“早调、少调”,为高炉稳定顺行赢得主动权。
按照公司能源管理部和炼铁部“四降两提”工作要求,通过节能技术改造以及强化节能管理工作,杜绝跑冒滴漏,同时为各岗位制定标准化作业指导书及量化指标,并进行攻关,从而降低高炉动力介质消耗。
通过精细化措施降低喷吹煤粉氮气量及高炉布料器用氮气量,2021年氮气消耗较2020年降低270万m3,折算降低工序能耗0.16 kgce/t。
提高喷煤固气比降低氮气消耗。喷吹岗位加强与配管沟通,降低空喷枪数。在操作中,根据煤量变化,及时调整输送风、管路风量,合理控制罐压。
高炉布料器密封室氮气用量约280 m3/h,通过调整布料器水量,合理匹配氮气用量,最终稳定在200 m3/h。另外,在高炉休风过程中,及时减少布料器氮气用量,休风后,保持最小量,从而达到节约氮气的目的。
高炉生产水消耗主要为冲渣用水,现两座高炉设置4套俄罗斯圆盘法水渣处理系统,为降低生产水用量,采取以下措施:
(1)在圆盘接料率下降或出铁不规律、渣量非常大时,水渣提渣能力不足,生产水溢流,投产前期溢流生产水直接进入雨排,浪费非常大。经过论证,在水渣厂房外设置储水池,将溢流生产水通过水泵进行回收,杜绝生产水外排,减少浪费。
(2)从工艺上优化操作参数,冲渣泵压力控制在0.45~0.51 MPa,流量控制在1 750~2 000 m3/h;根据出铁前后期渣量变化,及时调整气提开度,从而达到高效率提渣。
2021年生产水消耗量较2020年降低68万m3,折算工序能耗降低0.03 kgce/t。
高炉水渣提渣需要大量的压缩空气,经过优化操作及技术改进,2021年压缩空气较2020年降低5 847万m3,折算工序能耗降低0.36 kgce/t。
(1)减少皮带吹扫及水渣气提压缩空气使用量。高炉正常生产时(包括高炉小于4 h休风)铁口正常堵口,水渣4条皮带上无料后,将气提用压缩空气量减至1 000 m3/h。
(2)水渣计划检修或高炉休风大于8 h,水渣根据检修要求排水,正常排水后停气提,复风后开气提,气提用压缩空气量保持1 000 m3/h。
(3)优化操作参数。根据炼铁工况变化,及时将搅浑泵的压力控制在0.15~0.18 MPa,流量控制在260~299 m3/h,达到高效提渣。
高炉生产过程中,水渣圆盘设备及喷吹的制粉系列是耗电大户,生产中采取以下措施。
(1)制粉系统。放宽煤粉粒度,将粗粉分离器角度由4°调整到3°,将煤粉粒度由原来的小于0.074 mm占比85%降低到80%;另外将煤粉仓底煤由500 t降低到450 t;实时监控及调整磨机入口、出口温度,磨机入口温度控制在200~300 ℃,出口温度控制在80~90 ℃之间。
(2)水渣圆盘在铁口堵口后,岗位确认沉渣池中水渣提完后,及时停圆盘,从而降低电耗。
通过采取措施,2021年电耗较2020年全年降低44.6万kWh,折算工序能耗降低0.08 kgce/t。
TRT技术是通过透平机将高炉炉顶煤气的压力转变为机械能,再由机械能转为电能的装置,是炼铁高炉一项很好的节能措施。2020年年初,两座高炉顶压一直维持在220 kPa,至2020年6月顶压已逐步提高至235 kPa。2021年,8#高炉逐步将顶压提高至250 kPa,7#高炉因送风管系及炉顶封罩情况,顶压限制至245 kPa。提高炉顶压力,可降低煤气流速,使矿石进行的间接还原向有利方向发展,有利于炉况稳定,尤其有利于TRT发电。2021年TRT发电量较2020年多回收621.2 kWh,折算工序能耗降低0.25 kgce/t。
从2020年逐步探索大风量操作,通过优化操作参数及根据炉况变化积极调整装料制度,并制定合适的控制参数,积极组织炉前出铁,合理调整钻头直径,防止出铁前期受憋,及时调配渣铁罐,出净渣铁,为高炉稳定顺行上风量奠定基础。各班统一操作,执行标准化作业,加强基础管理,消除耽误,保证生产稳定运行。8#高炉风量由6 300 m3/min逐步提高至7 000 m3/min,7#高炉风量由6 300 m3/min逐步提高至6 600 m3/min,通过增加风量增加煤气回收量。2021年高炉煤气回收量较2020年增加34 749.6万m3,折算工序能耗降低9.8 kgce/t。
通过采取以上措施,达到降耗的目的,2021年高炉工序能耗达到350.84 kgce/t,见表1
(1)强化原燃料管理,改善入炉炉料的质量,减少入炉料粉末,延长高炉顺行周期,为降低铁水工序能耗创造有利的条件。
(2)加强高炉煤气回收及TRT发电、节能技术改造以及强化节能管理工作,炼铁工序能耗逐步降低。
(3)维持高炉的稳定顺行是降低能耗的先决条件。
参考文献 引证文献
排序方式:
[1]
敖爱国, 居勤章. 宝钢高炉节能降耗生产实践[J]. 炼铁, 2005, 24(4):21-23.
[2]
高波. 新钢公司2 500 m3高炉降低炼铁工序能耗生产实践[J]. 科技创新导报, 2017, 14(30):74-75.
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  • 接收时间:2021-10-19
  • 首发时间:2025-11-24
  • 出版时间:2022-02-25
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  • 收稿日期:2021-10-19
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2种不同金属材料的力学参数

Family
属数
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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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