A transport model is proposed for wax deposition onto a cold finger from flowing wax‐containing oils. The model solves transient energy and mass balances simultaneously for a reversible first‐order kinetic rate for precipitation of pseudo‐single‐component wax, and the effects of yield stress using a critical solid wax concentration to withstand flow‐induced stress at the deposit‐fluid interface. The model can predict the time evolution of the deposit thickness, and the spatial and temporal evolution of temperature and wax concentration as validated using cold finger experiments. It was found that for high wax content oils, deposit thickness growth is dominated by heat transfer. For low wax content oils that are unable to gel, the thickness growth is slow and accompanied by occasional sloughing. Regardless of the mechanism controlling the growth, mass transfer cannot be neglected as wax diffusion into the deposit continues to take place after the deposit has stopped growing.

中文翻译：

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经过实验验证的传热和传质模型，用于从流动的油到冷表面上沉积蜡

提出了一种运输模型，用于将蜡从流动的含蜡油中沉积到冷手指上。该模型同时解决了瞬态能量和质量平衡，以实现拟单组分蜡沉淀的可逆一阶动力学速率，以及使用临界固体蜡浓度来承受沉积液中流动引起的应力的屈服应力影响接口。该模型可以预测沉积厚度的时间演变，以及使用冷指实验验证的温度和蜡浓度的时空演变。发现对于高蜡含量的油，沉积物厚度的增长主要由传热决定。对于不能胶凝的低蜡含量的油，厚度增长缓慢，并伴有偶尔的脱落。不管控制增长的机制是什么，