If the pull-no, you can pour point of kerosene, including hole and then pull.

如果拉不出，可在内孔浇点煤油再拉。

Depression of the pour point of diesel oil and improve its fluidity in subzero.

降低各种柴油的冷凝点和冷滤点,提高其低温流动性.

The solutions are adding the pour point depression agent and steam injection from the top.

解决方案为加入降凝剂,并在罐上部注入蒸汽.

A pour point depressant ( PPD ) for improving the cold fluidity of diesel oils was studied.

摘要对柴油降凝剂进行了研究,降凝剂为苯乙烯、顺丁烯二酸酐及正十八胺三元共聚物.

Synthesis and purification of long chain alkyl acrylate as intermediate of pour point depressant were introduced .

介绍了降凝剂中间体丙烯酸高碳醇酯的合成和产品分离提纯方法。

Synthesis and purification of long chain alkyl acrylate as intermediate of pour point depressant were introduced.

介绍了降凝剂中间体丙烯酸高碳醇酯的合成和产品分离提纯方法.

Thus, the composition of crude oil depressants are an efficient way to improve the effects pour point depression and viscosity reduction.

由于含蜡原油的类型、含蜡量及蜡分子中碳原子数等不同，使任何单一组成的降凝剂在使?。

The effects of alkyl-naphthalene which is one of the pour point depressants (PPD) on the amount of wax precipitated from the simulation oil are studied in this work.

研究了降凝剂（PPD）对模拟油中蜡析出的影响，用高速离心机对特定温度下析出的蜡进行了分离，得到了加剂前后不同温度下的析蜡量；

If this technique is used in oil pipeline, an extra provision for pour point depression and viscosity reduction shall necessarily be allocated at the initial station.

将该工艺应用到原油管道输送，需在输油管道的首站增设一座原油分子筛降凝减粘装置。