And the research progress of mechanisms of quench oil viscosity changing and mechanisms of anfifoulant were summaned.

总结了当前在急冷油粘度变化和减粘剂减粘原理方面的研究进展；

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According to the analysis of components of quench oil and it's fouling, the reasons of viscosity increasing are discussed.

通过对急冷油和急冷油系统结垢物组成的分析，探讨了急冷油粘度增长的原因。

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JNJ - 3 viscosity reductant for quench oil was developed on the basis of analyzing reasons for viscosity increase of quench oil in ethylene plant and its reaction mechanism.

对乙烯裂解装置中急冷油粘度增长的原因及反应机理进行了分析，并在此基础上开发出JNJ - 3型急冷油减粘剂。

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