碳酸钙型油田水结垢特性实验分析

为了研究油田水在不同温度、不同离子浓度下的结垢规律,对碳酸钙型油田水进行了实验分析。采用静态实验的方法,通过改变模拟油田水的温度、离子浓度和加热时间,得到了不同条件下的结垢规律。实验结果表明,油田水的临界结垢温度为42.5℃左右,主要沉淀离子钙离子的浓度对临界结垢温度有影响。在一定实验条件下,随着钙离子浓度的增加,油田水的临界结垢温度将降低。该实验结果可为油田现场及集输管道的温度设定提供参考。

玻璃钢原油管线结垢特性实验分析

红山嘴油田注采联合站至采油一厂稀油处理站输油管道(简称红—克线)将红山嘴稀油井区含水原油转输至采油一厂稀油处理站进行处理,该管道采用玻璃钢管。红山嘴油田原油采出水矿化度较高,水中成垢离子含量较高,混合后结垢趋势明显。投产使用后由于对管道结垢现象认识不足,管线在投产8个月后首次清管,因管道结垢严重导致清管球堵塞,严重影响红—克线的正常运营。有必要对红—克线结垢特性进行实验分析,得出红—克线的结垢速率、结垢临界温度、沉积系数,为红—克线常温输送温度的确定提供依据,减少管道结垢量和能耗,保证红—克线的安全运营。

制糖软化水独立循环冷却系统的应用

介绍了制糖循环水冷却系统的运行特点，对传统制糖循环水冷却系统冷却效果差、水系统结垢严重问题进行了详尽的分析，提出改进措施，并在实际运行中取得了很好的效果。

Experimental study on fouling characteristics and influence factors of spiral-grooved tube

In this paper,we carried out a series of experiments on fouling characteristics of 6 kinds of spiral-grooved tubes to investigate the impact of hardness,temperature and structure parameters of cold water on fouling characteristics of spiral-grooved tube.Experimental results showed that when cold-water temperature decreased,fouling resistance of spiral-grooved tube also decreased.Asymptotic fouling resistance increased accompanied with increase of cold-water hardness.However,the asymptotic fouling resistance appeared to reduce when hardness increased to some extent.Geometric parameters of spiral-grooved tubes had remarkable effect on fouling resistance,which showed a tendency of decrease with increase of groove depth and decrease of pitch.In this study,the minimum asymptotic fouling resistance was observed in the spiral-grooved tube with small pitch and large groove depth.