正构烷烃

正构烷烃含量对裂解烯烃收率的影响及乙烯裂解的原料调配

Effect of Normal Paraffin Content on Ethylene Yield and Feedstock Allocation of Ethylene Pyrolysis Process

加速发展C5/C6正构烷烃异构化工艺

Accelerating the development of domestic c_5 / c_6 normal paraffin isomerization process

C5、C6正构烷烃异构化反应的热力学分析

Thermodynamic analysis on N c_5 , n c_6 paraffin isomerization

0.1Mt/a的C5/C6正构烷烃异构化工业试验装置的运行

Running of commercial test unit for 2000 b / d c_5 / c_6 normal alkane isomerization

随热演化程度的增加，C1含量逐渐减少。相对于正构烷烃的含量，异构烷烃的含量逐渐减少。

With increasing thermal evolution level , the content of methane gradually increases and the content of isoalkanes decreases relative to the content of n-alkanes .

石蜡主要是由正构烷烃组成，还有较少的异构烷烃、环烷烃和芳烃，以及含微量S、N、O的化合物。

Paraffin consists of n-alkane , short p-alkane , naphthene and aromatic , minimal amount of compounds containing elements S , N , O.

绵羊粪便中的正构烷烃的GC-MS分析

GC - MS Analysis of n-Alkanes in Faecal of Sheep

正构烷烃单体稳定碳同位素值介于-29～36‰之间，指示陆生高等植物可能以C3植物为主。

The n-alkanes ' carbon isotopic values ranging - 29 ‰ ~ - 36 ‰ support above viewpoint and suggest that C3 plants are main in land plants .

分析了单分子烃C同位素测定的误差来源，阐明了正构烷烃与异构烷烃预分离处理、色谱升温程序和数据处理是影响单分子烃C同位素测定结果的重要因素。

It is shown that the sample pretreatment for separating n-alkanes from i-alkanes , the chromatogram temperature program and the data treatment have significant effects on the δ C values of monomolecular hydrocarbon .

本文利用高压DSC对各种燃料烃（正构烷烃、环烷烃、烷基芳烃和双环烃）的安定性进行了研究。

In this paper , the experimental investigation on the stability of various fuel hydrocarbons was carried out by high pressure DSC .

利用ECP技术测定正构烷烃在5A分子筛上的吸附等温线

Measurement of Adsorption Isotherms of n-alkane on 5A Molecular Sieve with ECP Technology

结果表明，Fe－Cu－K催化剂上费托反应与水煤气变换反应同时进行，产物分布（油、蜡、烯／烷比、正构烷烃、1－烯烃等）随操作条件发生有规律的变化。

The results show that FT and water gas shift ( WGS ) reactions take place simultaneously on the catalyst surface , and product distributions vary with operation conditions .

5A分子筛吸附法分离石脑油中正构烷烃的工艺研究

Study on the Adsorption Process of Separating Normal Paraffin from Naphtha by 5A Sieves

在较高的成熟度阶段，正构烷烃表现为nC7>nC6>nC5≈nC4。这代表了一种富氢母源形成轻烃的特征。

In higher maturity , n-alkanes occur as nC_7 > nC_6 > nC_5 ≈ nC_4 . This represents characteristics of light hydrocarbons which are generated from rich-hydrogen source rocks .

但奇碳数正构烷烃（正壬烷、正十一烷）与ETS标志物具有一定的相关性。

However , odd carbon n-alkanes ( n-nonane , n-undecane ) show better correlation with ETS markers .

当MAC侧链长度略高于正构烷烃的平均碳数时，改性效果最好。

Therefore , when the length of side-chain of MAC is slightly longer than that of normal alkanes in diesel , the best performance can be obtained .

GC定量分析正构烷烃的结果和HPLC定量分析多环芳烃的结果均显示，天坛站点的有机物污染浓度大于十三陵站点。

Both quantitative GC data of alkanes and HPLC data of PAHs indicated that organic pollution level was higher in Temple of Heaven site than that in Ming Tomb site .

对C5、6正构烷烃异构化反应进行了详细的热力学分析。

Thermodynamic analysis on the n C5 , n C6 paraffin isomerization reaction was worked out in detail .

结果表明：C（26）和C（30）正构烷烃的降解速度模式相似，证实了正构烷烃随着碳原子数的增多，降解速度减慢。

It has been found that the biodegradation mode of C_ ( 26 ) was similar with that of C_ ( 30 ), and the biodegradation process would slow down along with the increasing number of carbon atoms in alkanes .

指出最有前途的高碳醇生产方法是SHOP－OXO法和正构烷烃加氢－OXO法。

It is pointed out that the most developable method for producing higher alcohols is SHOP-OXO process or normal paraffins hydrogenization-OXO process .

XRD结果显示，蜡晶结构与蜡晶中含量高的高碳数正构烷烃二十三烷结构类似，加剂后平均晶粒变小。

After adding the improver , the structure of wax is similar to n-tricosane and the average size of wax particles becomes smaller while the long-range order of wax increases based on XRD spectrum .

改进SRK方程提高正构烷烃饱和蒸气压和液体体积预测精度

Modified SRK equation of state to improve prediction of saturated vapor pressures and saturated volumes of alkanes

用扩展的Enskog理论预测正构烷烃的导热率

Prediction of thermal conductivities of liquid n-alkanes by the modified Enskog theory

模拟计算所需参数采用估算和回归的方法，通过经验公式估算传质系数，利用单组分正构烷烃在5A分子筛上的吸附平衡数据，直接得到竞争吸附平衡模型参数。

The necessary parameters for simulation calculation were estimated and regressed on the basis of equilibrium data of monocomponent n-paraffins on 5A molecular sieve .

本文研究了C5～C7正构烷烃和93＃汽油在KL吸附剂上的吸附与脱附性能。

The adsorption and desorption performance of nC 5 ~ nC 7 normal alkane and 93 # gasoline vapor in KL adsorbent was studied .

这个方法毋需准确计量浓度和繁杂计算，可以简便准确地鉴定单纯正构烷烃的碳数n，或混合物的平均基团含量。

This simple and accurate method provides a means for the determination of the carbon numbers n of pure compound ( and so its structure ) and the average content of functional groups of blends without resorting to accurate measurement of concentration and tedious calculations .

本文采用动态法研究了单溶质和双溶质正构烷烃的正戊烷溶液在5A分子筛上的吸附平衡关系；

The adsorption equilibria of normal paraffine in single and double solute n & pentane solu - tion was studied dynamically on a 5A molecular sieve .

首先以轻质循环油和系列正构烷烃为例，讨论了GC×GC的分离特性及用于宽馏程样品分离条件最佳化的方法。

Firstly , we took light cycle oil ( LCO ) as a sample and discussed the separation characteristics of GC × GC and optimization of the conditions for separation of a sample with a wide distillation range .

其中，分子筛脱蜡工艺常用Molex法，该法用模拟移动床将正构烷烃与异构烷烃、芳烃分离。

Usually , n-paraffins are separated from i-paraffins and aromatic hydrocarbons by Molex process , which uses the simulated moving bed technology .

在选定的反应条件下，2g大庆减压馏分油，加入15mL异丙醇，3g尿素，正构烷烃的平均收率为42.51%。

Under the selected reaction conditions , 15 mL of isopropanol and 3 g of urea were added to 2 g of Daqing VGO , an average normal paraffin yield of 42 . 51 % was obtained .