煤化工循环水阻垢缓蚀剂研究与应用  

Research and application of scale and corrosion inhibitor for circulating water in coal chemical industry

作　　者：禚青倩 风行 安一鸣 孙飞 傅晓萍 甄毅 隋兴彬 ZHUO Qingqian;FENG Xing;AN Yiming;SUN Fei;FU Xiaoping;ZHEN Yi;SUI Xingbin(SINOPEC Research Institute of Petroleum Processing Co.,Ltd.,Beijing 100083,China;Zhongtianhechuang Energy Co.,Ltd.,Ordos 017399,China)

机构地区：[1]中国石化石油化工科学研究院有限公司,北京100083 [2]中天合创能源有限责任公司,内蒙古鄂尔多斯017399

出　　处：《应用化工》2024年第9期2048-2051,2056,共5页Applied Chemical Industry

基　　金：国家自然科学基金项目(21902184,U20A20154)。

摘　　要：研究了氯离子、硫酸根、钙硬度和总碱度等关键离子对循环水系统腐蚀和结垢的影响规律,结果表明,氯离子、硫酸根和钙硬度对碳钢腐蚀速率影响不大,总碱度的影响显著;氯离子和硫酸根对结垢影响不大,钙硬度和总碱度的影响显著。针对煤化工高含盐循环水研发的低磷阻垢缓蚀剂RP-21(ZT)具有良好的缓蚀和阻垢性能,在控制循环水总碱度不超过450 mg/L条件下,系统腐蚀速率和污垢沉积率均较低,满足生产装置的长周期稳定运行要求。The effects of chloride ion,sulfate,calcium hardness and total alkalinity on corrosion and scale formation of circulating water system were studied.The results showed that chloride ion,sulfate and calcium hardness has little effect on corrosion rate of carbon steel,while total alkalinity has significant effect.Chloride ion and sulfate has little effect on scale formation,while calcium hardness and total alkalinity has significant effect.RP-21(ZT),a low-phosphorus scale and corrosion inhibitor were developed for heavy salt circulating water in coal chemical industry,and it has good corrosion and scale inhibition properties.When the total alkalinity of circulating water is no more than 450 mg/L,the corrosion rate and fouling rate of the system is low,which can meet the requirements of long-term stable operation of the production plant.Electrochemical test show that RP-21(ZT)is an anodic corrosion inhibitor.

关 键 词：煤化工 高盐水 阻垢缓蚀剂 

分 类 号：TQ085.4[化学工程]