氟化氢预反应器螺旋桨磨损腐蚀影响规律研究  

Study on Influence Law of Erosion-corrosion in Propeller of Hydrogen Fluoride Pre-reactor

作　　者：张冲冲 付钰 张一鸣 刘岑凡 陈昇 Zhang Chongchong;Fu Yu;Zhang Yiming;Liu Cenfan;Chen Sheng(Key Laboratory of Special Equipment Safety and Energy-saving for State Market Regulation,China Special Equipment Inspection&Research Institute,Beijing 100029;China University of Petroleum,Beijing 102249)

机构地区：[1]国家市场监管重点实验室(特种设备安全与节能),中国特种设备检测研究院,北京100029 [2]中国石油大学(北京),北京102249

出　　处：《中国特种设备安全》2023年第6期18-23,共6页China Special Equipment Safety

基　　金：国家自然科学基金青年基金(21898245);国家市场监督管理总局科技计划(2020MK180)。

摘　　要：以20#钢为研究对象,采用失重法和动电位极化法,通过螺旋推料的磨损腐蚀实验机,研究了料浆粉酸比(0.9、1.0、1.1)和螺旋轴旋转速度(25 r/min、35 r/min、45 r/min)对氟化氢预反应器内部磨损腐蚀的影响规律。结果表明:沿料浆流向磨损腐蚀速率降低,且桨叶处高于螺旋轴处;随着粉酸比的升高,静态腐蚀速率降低,但磨损腐蚀速率随粉酸比的升高先增大后降低,粉酸比为1.0时磨损腐蚀速率最大;随着螺旋轴转速增加,磨损作用越来越强,同时,还会加快腐蚀产物的脱落,从而使腐蚀作用也越来越强。The effect of powder-acid ratio(0.9,1.0,1.1)of slurry and rotating speed(25 r/min,35 r/min,45 r/min)of screw shaft on erosion-corrosion rate in hydrogen fluoride pre-reactor,was studied by a screw feeder machine with weight loss method and potentiodynamic polarization method.The material of samples in this work is low-carbon steel(20#).The results show that the erosion-corrosion rate decreases along the flow direction of the slurry,and the rate at the blade is higher than that at the screw shaft.The static corrosion rate decreases with the increase of the powder-acid ratio.However,the change of erosion-corrosion rate first increases and then decreases.When the powder-acid ratio is 1.0,the erosion-corrosion rate reaches its maximum.The erosion effect will be increased gradually as the rotating speed increases.In the meantime,the increasing of rotating speed accelerates the shedding of corrosion products,which will lead to the intensification of corrosion.

关 键 词：预反应器 磨损腐蚀 粉酸比 转速 氟化工 

分 类 号：X933.4[环境科学与工程—安全科学]