Development of an experimental methodology for assessing the growth of scale (CaCO3) in pipelines

3rd International Meeting for Researchers in Materials and Plasma Technology; 1st Symposium on Nanoscience and Nanotechnology

物理学;材料科学

García, M.^1 ; Vega, J.^1 ; Pineda, Y.^1 ; Vera, E.^1

Universidad Pedagógica y Tecnológica de Colombia, Tunja, Colombia^1

关键词: Aqueous fluids;    Chemical factors;    Experimental development;    Experimental methodology;    Fouling deposit;    Mechanical integrity;    Surface temperatures;    Test condition;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/687/1/012002/pdf
DOI  :  10.1088/1742-6596/687/1/012002

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

One of the problems that affect the mechanical integrity of pipelines transporting aqueous fluids is the formation of fouling deposits as CaCO3. Today different theoretical models that establish criteria trend but are not decisive in establishing the true rate of growth of scale in a pipeline there. This paper presents experimental development which was conducted to deposit scale of calcium carbonate by using a loop in which the deposits formed into a capillary of stainless steel AISI 316 and thus study the influence of various physical - chemical factors such as the composition of the solution, flow rate, and surface temperature and the presence of CO2generated on amount of scale. The evolution of the thickness and the amount of fouling obtained by tests was subsequently determined and by X-ray diffraction (XRD) and scanning electron microscopy (SEM) were characterized the deposits. With the results of the study show a strong influence of carbon dioxide in the amount of fouling obtained and according to the composition of the solution the flow rate fouling can generate greater or lesser scale. Under the test conditions is not possible to obtain deposits at room temperature.