环烷

Firstly the mid-pruduct imidazoline was produced by reaction of naphthenic acid and diethylene triamine, then the corrosion inhibitor amphoteric imidazoline, which is soluble in water, was produced by reaction of imidazoline and sodium monochloroacetate in aqueous solution.

以高纯环烷酸与二乙烯三胺反应合成了中间体咪唑啉，再以去离子水为溶剂，用氯乙酸钠对该中间体进行两性化，制得了水溶性两性咪唑啉缓蚀剂。

Thirdly, the mechanism of extractant and diluent loss in aqueous phase was studied in both saponified organophosphorus acids and naphthenic acid extraction systems.

本文通过研究皂化有机磷酸、环烷酸从有机相到水相的转移及水相中胶团或o/w型微乳状液的形成，证明了皂化酸性萃取剂和有机溶剂的水相流失与水相聚集体的形成有关。

TBN70 marine cylinder oil for two stroke cross head diesel engine with big power and low speed,is developed with the neutral oil from Xinjiang 0 # crude oil as base oil and the overbased calcium naphthenic acid from Dushanzi Petrochemical Subsidiary as the main detergent.

以独山子石化分公司生产的高碱值环烷酸钙为主要清净剂，以新疆 0 #原油生产的基础油研制适用于大功率低速二冲程十字头式柴油机的TBN70船用汽缸油。

The corrugated ceramic packings offer excellent resistance to high-temperature hydrogen sulfide and naphthenie acid corrosions.

耐蚀瓷质波纹填料具有很强的抗高温硫化氢和环烷酸腐蚀的性能，在腐蚀严重的高温传质环境中应用，可以替代不锈钢填料，延长检修周期。

The more the types of unstable constituents,such as unsaturated hydrocarbons,especially conjugated dienes,arene s and so on,and the higher the unstable constituent contents in diesel fuel,the more easily the oxygen absorption reaction takes place.

柴油中含有某些不饱和烃，特别是共轭二烯烃、环烷、芳香烃类等不安定组分的种类越多及含量越高，就越容易发生吸氧氧化反应，安定性能或质量下降越明显。

Through the processes of grinding bastnaesite ore concentrate, mixing the ore powder with NaCO3 in the ratio of 1 to 0.1-0.4, roasting the mixture at 400-800 deg.c for 1-6 hr, elution of the roasted sand with hot water to obtain NaF, drying filtered drag after eluting NaF and mixing the dried drag with ammonium chloride, roasting the mixture at 300-600 deg.c for 1-3 hr, hot water soaking to obtain rare earth chloride solution, extraction with 20% kerosine solution of naphthenic acid, and hydrochloric acid counter extraction to obtain rare earth chloride product.

本发明涉及一种氯化铵法从氟碳铈精矿提取氯化稀土的方法，首先将氟碳铈原精矿磨细，并与NaCO 3 混合，其比例为原矿∶NaCO 3 ＝1∶0.1～0.4，混合均匀后在400℃～800℃焙烧1～6小时，焙砂用热水洗出NaF，洗出NaF的滤渣干燥后与氯化铵混合，于300℃～600℃焙烧1～3小时，再用热水浸取得到氯化稀土溶液，用20％的环烷酸煤油液萃取，再采用盐酸反萃得到氯化稀土产品。

The analysis on fatty acid,alcohol and ketone of oil with GC-MS method indicates that the alkyl acids,especially those with linear and saturated alkyl acids,are dominant in the newly generated acids.

采用气相色谱-质谱方法，对油样提取物中微生物产生的酸、醇、酮等物质进行了分析研究，两株菌产酸以饱和烷基酸为主，尤其以直链饱和烷基酸居多，同时也生成一定量的环烷、烯基酸和少量的芳基酸。

The naphthenic acids in 200~430℃ distillate of Liaohe crude oil were separated by column chromatogram and anion exchange resin.

采用柱色谱和阴离子交换树脂法分离出辽河200~430℃馏分油中的环烷酸。

Keywords vacuum column;crude oil with low sulfur content and high naphthenic acid number;naphthenic acid corrosion

减压塔；低硫高酸值原油；环烷酸腐蚀；防护措施

Shell Diala Oil B and Shell Diala Oil BX transformer oils are formulated from top quality naphthenic base oils giving excellent insulation performance and corrosion protection.

壳牌Diala B和壳牌Diala BX变压器油采用优质环烷基础油精制而成，具有良好的绝缘性能和抗腐蚀性能。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失