工业规模级高压密相煤粉流量控制阀特性研究
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摘要
煤粉流量控制阀是煤粉气化炉生产负荷调节与氧煤比控制的关键设备。在分析壳牌煤粉气化炉煤粉流量控制阀(接管内径54 mm)的工业运行数据时,将高压氮气输送的浓相煤粉简化为等效密度的单相流体,比照控制阀气液双相流等效密度法来处理煤粉与氮气混合物的质量流量,将阀门的已知固有流量特性修正为煤粉与氮气混合物的流量特性,建立了偏差分别在±20%,±15%和±25%以内的控制阀的煤粉与氮气混合物流量系数、煤粉质量流量和阀门压降的计算模型。
Coal feed flow control valves are key equipment of gasifiers for the control of production load and ratio of oxygen to coal. While analyzing industrial operating data of coal feed flow control valves(connected pipe inner diameter 54 mm)used in Shell coal gasifiers,the author modified the given inherent flow characteristics of the valves to the flow characteristics for mixture of coal and nitrogen according to the method of gas-liquid two-phase flow mass flow calculation by simplifying high pressure dense phase fine coal to single-phase fluid with equivalent density,and built prediction models of flow coefficient for the mixture of coal and nitrogen,coal mass flow and pressure drop for the control valve with the deviation within ±20%,±15% and ±25% respectively.
Coal feed flow control valves are key equipment of gasifiers for the control of production load and ratio of oxygen to coal. While analyzing industrial operating data of coal feed flow control valves(connected pipe inner diameter 54 mm)used in Shell coal gasifiers,the author modified the given inherent flow characteristics of the valves to the flow characteristics for mixture of coal and nitrogen according to the method of gas-liquid two-phase flow mass flow calculation by simplifying high pressure dense phase fine coal to single-phase fluid with equivalent density,and built prediction models of flow coefficient for the mixture of coal and nitrogen,coal mass flow and pressure drop for the control valve with the deviation within ±20%,±15% and ±25% respectively.
引文
[1]成雷.壳牌煤气化装置中煤粉输送系统特种阀的故障分析及其国产化进展[J].流体机械,2010,38(8):50-52.
[2]Hans O.Engel,Control Valve for Process Automation[M].Germany,Honeywell,1998:61-86.
[3]吴国熙.调节阀使用与维修[M].北京,化学工业出版社,1999:57-77.
[4]古列维奇ДΦ.阀门设计与计算[M].王匡时,译.合肥:合肥通用机械研究所,1974:1-74.
[5]熊焱军,郭晓镭,黄万杰,等.新型煤粉流量调节阀性能研究[J].自动化仪表,2009,30(6):4-7.
[6]谢锴.工业级煤粉密相气力输送系统特性研究[D].上海:华东理工大学,2013:43-67.
[7]林雯,潘功胜,郭晓镭,等.SHELL煤气化装置中煤粉流量调节阀性能研究[J].煤炭转化,2014,37(1):41-44.
[8]Geldart D,Ling S J.Dense phase conveying of fine coal at high total pressures[J].Powder Technology,1990,62(3):243-252.
[9]Ratnayake C,Datta Biplab K,Melaan Morten C.Aunited scaling-up technique for pneumatic conveying systems[J].Particulate Science and Technology,2007,25(3):289-302.
[10]郭晓镭,陆海峰,陶顺龙,等.竖直上升管的煤粉密相气力输送阻力特性的试验研究[J].华东理工大学学报(自然科学版),2014,40(1):16-20.
[11]路文学,郭晓镭,龚欣.煤粉质量流量计的选择与应用[J].洁净煤技术,2011,17(6):106-110.
[12]徐国壮,周红军,周广林,等.Shell粉煤气化装置主要运行问题的分析[J].煤化工,2010(3):15-19.
[13]龚欣,郭晓镭,代正华,等.高固气比状态下的粉煤气力输送[J].化工学报,2006,57(3):640-644.
[2]Hans O.Engel,Control Valve for Process Automation[M].Germany,Honeywell,1998:61-86.
[3]吴国熙.调节阀使用与维修[M].北京,化学工业出版社,1999:57-77.
[4]古列维奇ДΦ.阀门设计与计算[M].王匡时,译.合肥:合肥通用机械研究所,1974:1-74.
[5]熊焱军,郭晓镭,黄万杰,等.新型煤粉流量调节阀性能研究[J].自动化仪表,2009,30(6):4-7.
[6]谢锴.工业级煤粉密相气力输送系统特性研究[D].上海:华东理工大学,2013:43-67.
[7]林雯,潘功胜,郭晓镭,等.SHELL煤气化装置中煤粉流量调节阀性能研究[J].煤炭转化,2014,37(1):41-44.
[8]Geldart D,Ling S J.Dense phase conveying of fine coal at high total pressures[J].Powder Technology,1990,62(3):243-252.
[9]Ratnayake C,Datta Biplab K,Melaan Morten C.Aunited scaling-up technique for pneumatic conveying systems[J].Particulate Science and Technology,2007,25(3):289-302.
[10]郭晓镭,陆海峰,陶顺龙,等.竖直上升管的煤粉密相气力输送阻力特性的试验研究[J].华东理工大学学报(自然科学版),2014,40(1):16-20.
[11]路文学,郭晓镭,龚欣.煤粉质量流量计的选择与应用[J].洁净煤技术,2011,17(6):106-110.
[12]徐国壮,周红军,周广林,等.Shell粉煤气化装置主要运行问题的分析[J].煤化工,2010(3):15-19.
[13]龚欣,郭晓镭,代正华,等.高固气比状态下的粉煤气力输送[J].化工学报,2006,57(3):640-644.