查询词典 olefine

Olefine, electrophilic or nucleophilic substitution of arenes, nucleophilic addition of carbonyl compounds stereochemistry in elimination reaction of double bond forming and the choosing of oxidants and reducing agents in redox system.

在化学反应方面重点是烯烃的亲电加成，芳香烃的亲电，亲核取代，羰基化合物的亲核加成，消除反应的双键定位和立体化学，氧化，还原反应中氧化还原剂的选择。

The conception of safety level and its deter- mination method for counter- blower system of poly- olefine bunker were introduced, to avoid the occurring of fire and explosion accident caused by static dis- charge because of ventilation dead zone.

介绍了聚烯烃料仓反吹风设置中安全料位的概念及其确定方法，以避免由于通风死区造成静电燃爆事故的发生。

According to the problem of outlet leakage of propane on the propane pump mechanical seal in the olefine factory of Qilu petro-chemical company, the new-type assembling non-contacting mechanical seal for propane pump was developed firstly on the basis of the principle of non-contacting of mechanical seal .

针对齐鲁石化公司烯烃厂丙烷泵机械密封频繁出现汽喷现象、密封端面泄漏严重的问题，根据非接触式机械密封原理，研制开发出了丙烷泵用新型非接触式机械密封。

A process for preparing clean gasoline features that under existance of epoxidizing catalyst and alkoxylating catalyst, the olefine in gasoline and the oxygen and alcohol take part in epoxidizing and alkoxylating reactions to generate diolmonoether or dioldiether compounds which has higher octane number, so being excellent gasoline component.

本发明公开了一种清洁汽油的生产方法，在一个具有环氧化的催化剂以及同时具有烷氧化催化组分或者催化剂的存在下，汽油中的烯烃与氧、醇、发生环氧化、烷氧基化反应而生成二醇单醚或二醇双醚类化合物，这类化合物具有较高的辛烷值，是优良的汽油组分。

1 Heptane, it was revealed that the Cr〓/ Catsan and ZnCl〓 could catalyze the Michael addition of pyrrole with conjugate olefine at α-position of pyrrole to get mono- or bi-Michael addition product selectively under mild condition in good yield. Totally, forty-six new compounds, including thirty target compounds, were prepared.

在探索7-氮杂桥环母体的构建方法过程中，发现了Cr〓／Clay和ZnCl〓可有效地催化吡咯的α-位与多种共轭烯烃发生Michael加成反应，可在温和的条件下，以良好的收率选择性地得到单或双Michael加成产物。

LOSA-1 is an assistant for increasing production of Light olefine with FCC.The result of its comnercial application in No.2 heavy oil FCC unit in Luoyang company shows that it can raise propylene content in liquefied gas.When its equilibrium addition is about 200kg/d with the proportion to fresh catalyst volume of 5%,the propylne content in liquefied gas can keep at 42%～45%. FCC;propylene;assistant LOSA-1;commercial application

LOSA-1助剂是岳阳三生化工公司和国内科研院所开发的增产轻烯烃FCC助催化剂，该剂在中国石化洛阳分公司2号重油催化裂化装置工业应用的结果表明，LOSA-1助剂具有较强的提高液化气中丙烯浓度的性能，当其平衡加入量控制在200kg/d左右、对新鲜催化剂加入比例为5%左右时，液化气中的丙烯体积浓度能够保持在42%～45%。

Thus, in order to attain acetal can be used as precursor of its matrix olefine aldehyde, 2-undecental glycol acetal was synthesized, and the corresponding optimum reaction conditions as: 2-undecental 0.2mol, glycol 0.3mol, cyclohexane as solvent, catalysed by vitamin C, the optium reaction time was 6h, its reaction yield could reach over 77.25%.

为了进一步探求效果更理想的前体化合物，本文继续合成了2-十一烯醛乙二醇缩醛，通过单因素优化实验得到最佳反应条件为：环己烷作溶剂，VC作催化剂，用量0.42%，醛醇物质的量之比0.2：0.3，反应时间6h，此条件下产品收率达77.25%。

For TRO there are a little surfacatants whose effect are not good.In this paper,content of sulfonates and composition of alkyl are decided through right design ;under control reaction conditions different alkylbenzene sulfonates are synthesized;Polyreaction catalyst is developed .non-straight high carbon olefine are made through C9-C12 Polyreaction technolgy;clear composition alkylkenzene is sulfanated in falling-film reactor by SO,product can be adjusted,recipe of the surfacate can be used for super-low interfacialtension with Daqing oil -10-3-10-4mN/m,and stablity is good too.According to method issued by Daqing Develop and Explore Research institute,EOR is over 20% in natural core .

本文研究通过烷基苯磺酸盐组成的正确设计，确定了磺酸盐的当量范围和烷基碳数组成和分布；通过对烷基化条件控制，设计合成了不同碳数的直链和支链烷基苯及烷基二甲苯，并用于制备了相应的烷基苯磺酸盐；研制出了新型的烯烃叠合络合催化剂，采用C_9、C_(12)支链烯烃叠合工艺合成了更高碳数的支链烯烃，并进一步合成出相应的烷基苯和烷基二甲苯；以SO_3为磺化剂，通过对磺化条件的选择和控制，采用已知组成的烷基苯混合物进行膜式磺化反应，使合成工艺得以简化；所得磺酸盐组成确定并且可控，最终配方可与大庆原油形成超低界面张力，达10~3～10~(-4)mN/m数量级，且稳定性良好；以合成的烷基苯磺酸盐为主体形成了三元复合驱配方，室内驱油模拟实验表明，按照大庆研究院对复合驱体系活性剂的评价方法，在天然岩芯上的驱油效率在20％以上。

The future technical advances hot poits in the petrochemical industry into new century for the refining-chemical integration and increasing olefine production technology ,the sythetic gas producing fuel and chemicals and light alkane activation technology ,the new separation and reaction technology ,the biochemlcal products technology 、the nanotechnology and the high efficiency informatiom technology are presented .

进入新世纪以来，世界石化原料和石化产品需求仍将持续增长，据2002年召开的第17届世界石油大会预测，1998~2010年间，乙烯需求将由8000万吨增加到12000万吨，丙烯将由4500万吨增加到8200万吨，丁烯-1将由80万吨增加到140万吨，α-烯烃将由100万吨增加到220万吨，苯将由2700万吨增加到4000万吨，对二甲苯将由1400万吨增加到3000万吨。2000~2020年间，石油用于石油化工的年均增长率为2.5%，超过石油的其他用途增长率。

Key Word petrochemical industry , refining-chemical integration ,olefine ,sythetic gas ,alkane activation ,separation ,reaction ,biochemlcal ,nanotechnology , informatiom technology

炼油厂的汽柴油规范将进一步强化，欧盟汽油含硫将从2000年150PPm减小到2005年50PPm、2011年10PPm，芳烃含量将从2000年42%减小到2005年35%，汽油中芳烃将寻求石油化工新用途。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。