Abstract
Abstract Fouling inside pipeline, especially crystal fouling, is a common issue in the chemical industry, which poses great threat on process of cleaner production and environment. The influence of water flow velocity on the calcium carbonate crystal fouling removal in pipeline using eco-friendly ultrasonic guided wave technology has been studied in this paper, in order to apply this technique better in the real-world scenarios. The finite element simulation model of guided waves propagating in pipeline containing flowing water is established, in which the acoustic pressure distribution along the pipe has been obtained, showing that the guided waves attenuate under the flowing water inside pipelines. Then an experiment system of fouling removal in pipe with flowing liquid is set up. According to the descaling experimental results, it has been demonstrated that there is a better descaling performance with water velocity of 0 m/s in pipe, and in the other way the performance is weakened with flowing water. The above conclusions can be useful for online descaling process in chemical industries.
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