用参数泵分步结晶制取精萘的新工艺及放大

Refining Naphthalene by Parametric Pump Fractional Crystallization

采用参数泵分步结晶工艺，开发了直立弹状流气泡管结晶器，由工业萘提纯制取精萘。实验室研究和放大试验的研究表明，产品纯度大于９９％，收率大于９２．５％。弹状气泡强化了传热和传质过程，流体的均布是放大过程的关键。

 crystallizer having a vertical bubble tube with slug flow has been developed on the basis of parametric pumpingThe technology and crystallizer are applied to industrial refining of naphthaleneThe process of heat and mass transfer are strengthened with slug bubble and even disperse of fluid is the key of scaleupThe naphthalene purity is over 99% with a yield of over 925%