| 1. | Diesel oil alkali washing refining industrial test research for naphthenic acid removal
柴油纤维液膜碱洗脱酸精制技术工业试验研究 |
| 2. | Naphthenic having the characteristics of naphthense ， which are saturated hydrocarbons containing molecules with at least one closed ring of carbon atoms
环烷烃具有环烷特性的、至少包含一个碳原子团链的饱和烃。 |
| 3. | Naphthenic having the characteristics of naphthense , which are saturated hy _ drocarbons containing molecules with at least one closed ring of carbon atoms
环烷烃具有环烷特性的、至少包含一个碳原子闭链的饱和烃。 |
| 4. | Metalx ep120 is manufactured from a select naphthenic base oil and compounded with an emulsifier which forms a stable milky - white emulsion when mixed with water
敏得力ep120是优质多功能、极压防锈型乳化金属加工浓缩液，具备极强的冷却性能和防锈特性。 |
| 5. | The mechanism , parts , appearance characteristics , impact factors of the naphthenic acid ' s corrosion in the process of crude distillation were analyzed , and put forward the reasonable antisepsis measures were put forward
摘要分析了环烷酸在原油蒸馏过程的腐蚀机理、腐蚀部位、腐蚀的外观特征、影响因素，提出了合理的防腐措施。 |
| 6. | Based on the analysis of corrosion mechanism of naphthenic acid , the major factors affecting the naphthenic acid corrosion , including crude oil composition , operation temperature , fluid velocity and flow pattern , pressure and metallurgy of equipment materials , are discussed
通过对环烷酸腐蚀机理的分析，指出原油组成、操作温度、流速和流动状态及设备材质等是影响环烷酸腐蚀的重要因素。 |
| 7. | Bc asphaltenes similar to petroleum asphaltenes and consist of aromatic nuclei , aliphatic chains , and naphthenic ring structures combined in three - dimensional network . but black carbon asphaltenes contains more aromatic carbon , oxygen - function groups , and less aliphatic chains
但碳黑沥青质与原油沥青质也是不同的，碳黑沥青质的分子结构中含有更多的芳香结构组分和含氧基团，较少的脂肪侧链组分。 |
| 8. | Abstract : a series of techniques producing lube base oil developed by ripp , including the technique for production of naphthenic lube oil , high viscosity base oil from sour crude and the api group base oil with viscosity index more than 120 from hydrocracking tail oil , were introduced
文摘:介绍了石油化工科学研究院开发的一系列润滑油基础油生产技术，主要有环烷基润滑油生产的工艺技术，含硫原油生产高粘度指数基础油的技术以及加氢裂化尾油制取粘度指数大于120的类基础油技术。 |
| 9. | Abstract : the synthetic method of pentaerythrito naphthenate by n on - acid catalyst sno was studied . the influences of mole ratio of ethanediol and naphthenic acid , a mount of catalyst , reation time , reation temperature etc . on est erification were discussed and the suitable processing conditions were found
文摘:介绍了用氧化亚锡非酸性催化剂催化合成环烷酸季戊四醇脂的方法，通过讨论醇酸摩尔比、催化剂用量、反应时间、反应温度等因素对该脂化反应的影响,从而确定了适宜的工艺条件 |
| 10. | According to the features of naphthenic base oil ( i . e . , high nitrogen and low sulfur content ) and based upon theoretical analysis of the h2s concentration needed for phase equilibrium of nickel sulfide and tungsten sulfide in hydrogen , the most economic quantity of sulfiding agent injected into the reactor for supplement of sulfur in lube oil hydrogenation catalysts was obtained
摘要针对环烷基油高氮、低硫的特点，通过对硫化钨和硫化镍在氢气中相平衡态所需硫化氢浓度的理论分析，对反应器入口所需补硫量作了详细的阐述，得出了最经济的补充注硫量。 |
