玻璃钢动态结垢机理和评价方法

为了解决玻璃钢管道输油结垢问题并找到抑制结垢的控制措施，研制了一种动态结垢评价装置及评价方法，并开展了玻璃钢动态结垢实验，研究了玻璃钢在不同温度、不同流速及不同时间下的动态结垢规律以及不同条件下结垢的形貌特征和组成，利用灰色关联度法分析了温度和流速对玻璃钢结垢影响的相关性。研究结果表明，该装置和试验方法简便可靠，数据准确；温度越高、时间越长，结垢量越多，晶粒越大，硬度越低；流速增加，结垢量先随之增大，然后急剧减小，再缓慢减小；温度和流速对结垢的影响最大，且温度的影响大于流速；溶液中Mg²⁺对针状文石形成起促进作用，而对方解石起抑制作用，Fe²⁺对结垢量无明显影响，但有利于柱状方解石的形成，垢层晶粒掺入两种离子均对方解石有一定的硬化作用。

Dynamic scaling mechanism and evaluation method for glass fiber reinforced plastic

To solve the problem of scale buildup in glass fiber reinforced plastic (GFRP)pipeline and find the control measures to inhibit scaling, this paper develops a dynamic scaling evaluation device and its evaluation method, systematically carries out the dynamic scaling experiment of GFRP, and analyzes the dynamic scaling law of GFRP at different temperatures, different flow rates and different time, as well as the morphological characteristics and composition of scale under different conditions. Further, the correlation between the effects of temperature and flow rate on scale buildup in GFRP has been analyzed using the gray correlation method. The results show that the above device and test method are simple and reliable, and the data is accurate. The higher the temperature and the longer the time is, the larger the amount of scale buildup is, the larger the grain and the lower the hardness is. When the flow rate increases, the amount of scale buildup will increase firstly, then decrease sharply, followed by slow decrease. Temperature and flow rate have the greatest influence on scaling, and the influence of temperature is greater than that of flow rate; Mg²⁺ in the solution promotes the formation of acicular aragonite while inhibiting the dissolution of aragonite. Fe²⁺ shows no obvious influence on the amount of scale buildup, but conducive to the formation of columnar calcite. The incorporation of two ions into the crystal grains of scale layer has certain hardening effect on the calcite.