降凝剂

评价结果表明，该型降凝剂在降凝、降粘及抑制蜡析出等性能均超过了苏丹现在所使用的CNPC型降凝剂。

The results indicate that the potency of this kind of new PPD has better effect on decreasing viscosity and pour point and inhibiting the wax deposit than that of CNPC-type PPD originally used in Sudan .

高浓度粉末分散型降凝剂的研制及评价

The Development and Evaluation on High-concentration Powder-dispersed PPD for Sudanese Blended Crude

C5石油树脂改性作为柴油降凝剂

C_5 Petroleum Resin Modification as Pour Point Depressant for Diesel

濮临线CE降凝剂的应用与研讨

Application and Discussion on CE Depressant Used in Pu-Lin Pipeline

MAH-C5与EVA合成柴油降凝剂

Synthesis diesel oil pour point depressant using mah-c_5 and EVA

当降凝剂A或B加入量为原油量的0.2%时，能使大港原油倾点下降17℃和9℃。

When A and B were added 0.2 % into Dagang crude oil , its pour point were lowered 17 ℃ and 9 ℃ respectively .

EVA柴油降凝剂的改性研究

Study on Modification of Ethylene-Vinyl Acetate ( EVA ) Copolymer as Pour-Point Depressant for Diesel Oil

同时利用XRD和DSC初步探讨了该降凝剂的降凝机理。

Additionally the mechanism of the synthesized low temperature flow improver was explored preliminarily using XRD and DSC .

说明在胜利中原原油中加入AAMAVA化学降凝剂后其降凝减粘和流变性能改善效果显著。

These showed that the copolymer of AA-MA-VA is effective against Shengli-Zhongyuan crude oil .

利用X-RAY衍射、偏光显微镜和微电泳仪研究了降凝剂对原油中蜡的结晶的影响。

The effects of pourpoint depressants on the wax crystals of Shengli crude oil are studied by using X-RAY diffraction , the polar microscope and micro-electrophoresis instruments .

寒区工业齿轮油理想添加剂应由粘度指数改进剂、降凝剂、S－P型极压抗磨剂、酚型抗氧剂及苯三唑脂肪胺盐等组成。

The ideal additives for industrial gear oil in cold area should be comprised of improver of viscosity index , pour point depressant , S-P extreme pressure wear inhibitor and benzo-triazole fatty amine .

PMA降凝剂化学结构对降凝效果的影响

The effect of the chemical structure of the PMA on the depression effect

用溶液聚合法合成了各种结构的乙烯-醋酸乙烯酯共聚物（EVA）降凝剂，考察了它们的结晶性质、溶解性质和降凝效果。

All kinds of molecule structures of the ethylene - vinyl acetate copolymers ( EVA ) have been synthesized by solution polymerization .

PAE柴油降凝剂的合成及性能评价

The synthesis and evaluation of PAE as pour point depressant for Diesels

间戊二烯C5石油树脂改性作为柴油降凝剂的研究

Investigation of modified piperylene C5 petroleum resin used as pour point depressant for diesel oil

共聚物OMA降凝剂的合成及对非洲原油降凝评价

Synthesis of Copolymer OMA as Pour Point Depressant for an African Crude Oil

降凝剂EMA的加入可使蜡晶表面带电，电性排斥使蜡晶高度分散而稳定存在；

As a result of electric exclusion , wax crystal exists in steady dispersion state .

高含蜡柴油用PCH降凝剂应用效果评价

Evaluation of PCH Pour Point Depressant for Diesel Oil with More Content of Wax

EVA降凝剂的相对分子质量分布的宽窄对降凝效果的影响不大，平均相对分子质量在1.2×104时降凝效果较好。

When the average relative molecular mass of EVA is 1.2 × 104 , the effect of EVA is best . The distribution of relative molecular mass has little influence .

以长庆、青海含蜡原油为研究对象，考察乙烯-醋酸乙烯酯共聚物（简称EVA）降凝剂对含蜡原油的降凝效果。

Using Changqing and Qinghai waxy crude oils as research objects , the depressive effects of ethylene-vinyl acetate ( EVA ) copolymer pour point depressant on the waxy crude oils were studied .

AV柴油降凝剂，是以丙烯酸酯、醋酸乙烯酯为原料，以甲苯为溶剂，以偶氮二异丁腈为引发剂，恒温聚合制得。

The depressant was produced by using acrylic alkyl ester and vinyl acetate as raw materials , methyl benzene as solvents , azobisisobutyronitrile as initiator by constant temperature polymerization .

利用低温显微技术对添加降凝剂EVAP前后柴油中蜡的生长形态变化进行了实时观测研究，同时利用x射线衍射技术研究了加剂前后蜡晶微观结构的变化。

Low-temperature micrography technology was applied to the real-time observation of the growth conformation differences of wax crystals in diesel fuel with / without EVAP , and XRD was also performed .

实验及工业应用表明，PCH降凝剂能有效地降低该厂柴油的冷滤点，当加入量为0.05%，调合柴油的冷滤点下降4℃，满足了油品的使用标准；

The laboratory and industrial application showed that PCH could effectively decrease the cold filter plugging point of diesel produced by the plant .

当参与结晶的碳原子数约等于原油中蜡的平均碳原子数的3／4时，EVA降凝剂的降凝效果最好。

When carbon number of alkyl chain of EVA , which takes part in crystallizing , is about equal to three fourths of average carbon number of wax , the effect of EVA pour point depressants is best .

EMA的用量达到一定值时，蜡晶表面ζ电位不随降凝剂含量的增加而变化。

However , when the dosage of EMA reached a certain value , the ζ potential at the surface of the wax crystallites remained stable regardless the dosage of EMA .

生产实践表明，D001型降凝剂降低柴油凝固点效果显著；

Application results show that D001 can significantly reduce diesel fuel ′ s pour point .

MOVAS柴油降凝剂的研究

The Study on MOVAS Additive for Improving Depressant of Diesel Fuel

BEMQ原油降凝剂在管道上应用后，原油凝点降低了16～19℃，15℃时原油粘度仅9.7～12mPa·s；

After BEM Q crude depressant was adopted , crude pour point has been decreased by 16 ~ 19 ℃, and crude viscosity at 15 ℃ is only 9.7 ~ 12 mPa · s.

GY-3降凝剂在靖&马输油管道上的应用

Application of GY-3 depressant in Jing-Ma Oil Transport Pipeline

CE-H降凝剂还有较好的抗剪切和重复加热性能。

The CE-H depressant also has a better characteristics in anti-shear and reheating .