Influence of Wax Inhibitors on Wax Appearance Temperature, Pour Point, and Viscosity of Waxy Crude Oils
Influence of Wax Inhibitors on Wax Appearance Temperature, Pour Point, and Viscosity of Waxy Crude Oils
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DOI：
10.1021/ef020142
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发表时间：
2003-02
期刊：
影响因子：
5.3
通讯作者：
K. Pedersen;H. Rønningsen
中科院分区：
文献类型：
--
作者：
K. Pedersen;H. Rønningsen
实验数据的粘度，倾点，和蜡的出现温度的稳定，含蜡北海原油处理12种不同的商业蜡晶改性剂，所有这些都可能作为蜡沉积抑制剂和倾点下降剂。粘度数据涵盖40至5 °C的温度范围。一般来说，所研究的化学物质对蜡的外观温度影响很小，而大多数化学物质对倾点和表观粘度有显着影响。粘度数据表明，抑制剂可能通过某种空间位阻，通过阻止蜡成分形成网络结构，使一定分子量范围内的蜡成分“失活”。它示出，这种效果可以通过假设降低的熔化温度的蜡分子的受影响的范围来建模。
Experimental data are presented for the viscosity, pour point, and wax appearance temperature of a stabilized, waxy North Sea crude oil treated by 12 different commercial wax crystal modifiers, all of which may potentially act both as wax deposition inhibitors and pour point depressants. The viscosity data cover the temperature range from 40 to 5 °C. In general the studied chemicals only marginally influence the wax appearance temperatures whereas the majority has a pronounced effect on pour points and apparent viscosity. The viscosity data suggest that the inhibitors, probably by some kind of steric hindrance, “inactivate” wax components within a certain range of molecular weight by preventing them from building of network structures. It is shown that this effect can be modeled by assuming a lowering of the melting temperatures of the affected range of wax molecules.