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首页> 外文期刊>Petroleum Science and Technology >The Effect of Sodium Sulfate on Vanadium Leaching From Petroleum Coke and Surface Physical-chemical Properties of Leaching Solution
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The Effect of Sodium Sulfate on Vanadium Leaching From Petroleum Coke and Surface Physical-chemical Properties of Leaching Solution

机译：硫酸钠对石油焦中钒浸出的影响及浸出液的表面理化性质

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摘要

The relationship of viscosity, conductivity, contact angle, and surface tension with the leaching rate of vanadium in the process of petroleum coke leaching by adding sodium sulfate was studied. Results show that the increase in sodium sulfate amount first increases and then declines the leaching rate. The variation of viscosity is opposite this trend. Conductivity first increases, then decreases, and finally increases in the same condition. Surface tension first decreases, then remains unchanged, and finally presents an increasing trend. The change in contact angle has approximately the same trend as the leaching rate. Surface tension and contact angle increase, inhibiting the reaction of pentavalent vanadium ion and sodium hydroxide, and consequently reducing the leaching rate.
机译：研究了硫酸钠加入石油焦炭浸出过程中粘度，电导率，接触角，表面张力与钒浸出率的关系。结果表明，硫酸钠量的增加先增加，然后降低浸出率。粘度的变化与此趋势相反。在相同条件下，电导率先增加，然后降低，最后增加。表面张力首先下降，然后保持不变，最后呈现上升趋势。接触角的变化具有与浸出率大致相同的趋势。表面张力和接触角增加，抑制了五价钒离子与氢氧化钠的反应，因此降低了浸出速率。

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