自动清洗自然循环式高效节能蒸发器的常压中试研究  

Normal Pressure Trial Experiments of Fouling Evaporators of Natural Circulation with Efficiency

作　　者：刘桂英[1] 俞天兰[2] 俞秀民[2] 彭德其[2] 刘跃平[2] 蒋少青[1] 支校衡[2] 

机构地区：[1]长沙理工大学汽车机械学院,湖南长沙410076 [2]株洲工学院帅科机械清洗研究所,湖南株洲412008

出　　处：《江南大学学报（自然科学版）》2004年第2期176-178,183,共4页Joural of Jiangnan University (Natural Science Edition)　

基　　金：湖南省教育厅基金项目(02C045)资助课题.

摘　　要：为解决蒸发器的结垢问题,设计了一种自动清洗自然循环式高效节能蒸发器,其关键是能否在合理的加热温差下产生足以带动自动清洗螺旋扭带可靠自转的自然循环推动力,为此设计了一套中试装置.常压蒸发条件下的中试结果表明:在传热温差26℃时,自然循环推动力可达0.11MPa以上,传热系数可提高10%以上,能可靠地带动扭带自转实行连续地自动清洗,且该技术与现有蒸发生产工艺和加热蒸汽压力条件完全适应,使用推广后能为生产企业创造较高的效益.A fouling-removal evaporator of natural circulation is developed to solve the fouling problem. The key lies in producing enough great driving force of natural circulation at reasonable heating temperature difference to make twisted tape self-rotate reliably in hear transfer tubes. Therefore, a new evaporator was produced in industry and trial experiments were conducted at normal pressure. It is showed that when temperature difference of heat transfer is only 26 ℃, the driving force of natural circulation can reach more than 11 000 Pa; the twisted tape can be driven to self-rotate reliably and prevent or remove fouling continuously; heat transfer coefficient is increased by more than 10%. Therefore, this new technique can make high profit for industry.

关 键 词：蒸发器 自然循环 自动清洗 中试研究 螺旋扭带 

分 类 号：TQ051.62[化学工程]