精对苯二甲酸余热利用汽轮机高效通流开发
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摘要
精对苯二甲酸(PTA)装置余热利用汽轮机可以有效回收反应余热,降低装置耗能,提高企业竞争力。介绍了某PTA装置余热利用汽轮机的设计难点及通流精细化设计过程,该机组具有1路主汽和3路补汽,4路汽源均为低压饱和蒸汽,汽轮机额定功率为51.5MW,单机功率为国内最大。重点介绍了汽轮机进汽方式选取、高效通流叶片设计、进补汽腔室设计、排汽蜗壳回收、去湿措施应用等,以上一系列精细化设计使该机组性能超过保证值3.5%。性能验收试验结果表明,该机组性能比保证值高3.1%,与设计值较吻合。研究成果可为大型余热利用汽轮机的研发提供参考。
The waste heat of reaction can be recycled by the steam turbine in purified terephthalic acid(PTA)plant to reduce the energy consumption and improve the competitiveness of enterprises.The design difficulties and flow refinement design process of a heat recycle steam turbine for PTA plant are presented.This unit has one main steam and three supplementary steam,and these four steam sources are all low pressure saturated steam.The rated power of the turbine is 51.5 MW,which is the maximum capacity in China.The features such as design of intake mode,high efficiency blades,intake and supplement chambers,exhaust volute,and the application of moisture removal measures are mainly demonstrated.The above refined design can make the performance of the unit exceed the guaranteed value by 3.5%.The result of performance test shows that the performance of the unit is 3.1% higher than the guaranteed value,which is in good agreement with the design value.The research results can provide reference for research and design of the large waste heat recycle steam turbines.
The waste heat of reaction can be recycled by the steam turbine in purified terephthalic acid(PTA)plant to reduce the energy consumption and improve the competitiveness of enterprises.The design difficulties and flow refinement design process of a heat recycle steam turbine for PTA plant are presented.This unit has one main steam and three supplementary steam,and these four steam sources are all low pressure saturated steam.The rated power of the turbine is 51.5 MW,which is the maximum capacity in China.The features such as design of intake mode,high efficiency blades,intake and supplement chambers,exhaust volute,and the application of moisture removal measures are mainly demonstrated.The above refined design can make the performance of the unit exceed the guaranteed value by 3.5%.The result of performance test shows that the performance of the unit is 3.1% higher than the guaranteed value,which is in good agreement with the design value.The research results can provide reference for research and design of the large waste heat recycle steam turbines.
引文
[1]赵彤阳,双玥,白雪松.我国PTA行业发展研究与展望(一)———市场形势篇[J].化学工业,2017,35(2):9-16.
[2]赵彤阳,双玥,白雪松.我国PTA行业发展研究与展望(二)———行业竞争篇[J].化学工业,2017,35(3):8-15.
[3]马晓飞,孔建强,陈金铨,等.浅析PTA装置汽轮机[C]//透平专业委员会.中国动力工程学会透平专业委员会2008年学术研讨会论文集.上海:中国动力工程学会,2008:145-155.
[4]马晓飞,孔建强,陈金铨,等.PTA装置余热利用型汽轮机的研究[J].热力透平,2009,38(2):90-93.
[5]杨军,王东,何勤伟.PTA装置精制单元常压余热蒸汽能量回收利用的讨论与分析[J].化工与医药工程,2018,39(1):56-59.
[6]邱永宁,赵旭,王天宝,等.PTA精制母液余热回收技术研究[J].现代化工,2018,38(1):174-176.
[7]陈威.PTA装置中压缩机设备控制系统的开发与应用[D].南京:东南大学,2012.
[8]陈艳.PTA装置用空压机组的控制系统设计[D].南京:东南大学,2012.
[9]杨建道,彭泽瑛.上海汽轮机厂先进超超临界汽轮机的发展[J].热力透平,2018,47(2):85-120.
[10]刘希涛,张学良.国内外火电汽轮机低压末级长叶片的发展[J].热力透平,2018,47(2):132-139,153.
[11]姚宏,周逊,王仲奇.工业汽轮机补汽结构对压力损失的影响及优化[J].西安交通大学学报,2016,50(7):18-25.
[12]初鹏.工业汽轮机低压排汽缸气动性能数值计算及改型优化[D].大连:大连理工大学,2012.
[2]赵彤阳,双玥,白雪松.我国PTA行业发展研究与展望(二)———行业竞争篇[J].化学工业,2017,35(3):8-15.
[3]马晓飞,孔建强,陈金铨,等.浅析PTA装置汽轮机[C]//透平专业委员会.中国动力工程学会透平专业委员会2008年学术研讨会论文集.上海:中国动力工程学会,2008:145-155.
[4]马晓飞,孔建强,陈金铨,等.PTA装置余热利用型汽轮机的研究[J].热力透平,2009,38(2):90-93.
[5]杨军,王东,何勤伟.PTA装置精制单元常压余热蒸汽能量回收利用的讨论与分析[J].化工与医药工程,2018,39(1):56-59.
[6]邱永宁,赵旭,王天宝,等.PTA精制母液余热回收技术研究[J].现代化工,2018,38(1):174-176.
[7]陈威.PTA装置中压缩机设备控制系统的开发与应用[D].南京:东南大学,2012.
[8]陈艳.PTA装置用空压机组的控制系统设计[D].南京:东南大学,2012.
[9]杨建道,彭泽瑛.上海汽轮机厂先进超超临界汽轮机的发展[J].热力透平,2018,47(2):85-120.
[10]刘希涛,张学良.国内外火电汽轮机低压末级长叶片的发展[J].热力透平,2018,47(2):132-139,153.
[11]姚宏,周逊,王仲奇.工业汽轮机补汽结构对压力损失的影响及优化[J].西安交通大学学报,2016,50(7):18-25.
[12]初鹏.工业汽轮机低压排汽缸气动性能数值计算及改型优化[D].大连:大连理工大学,2012.