查询词典 asphaltene

Now the high concentration of asphaltene and other impurities on the transport and processing of crude oil caused difficulties.

现在高浓度的沥青烯以及其他的杂质对原油的输送和加工造成了困难。

An effective method for determination of asphaltene content in oils is reported.

介绍了一种用分光光度法测定油品中的沥青质含量的方法。

In this process asphaltene is main product of Xinzhuang coal.

可见对煤浆粘度变化的研究在煤液化技术开发中是相当重要的。

The calculation results show that the predicted values of onset of asphaltene precipitation agree with the experimental data.

计算结果表明，沥青质沉淀点的计算值与实验数据基本相符，但沉淀量计算结果尚不能令人满意。

In the paper, the macro-sizes of the asphaltene colloidal particles were investigated based on the previous study of the dispersion characteristics of asphaltene in organic solvents.

在研究沥青质胶体分散特性的基础上，进一步了研究沥青质胶态粒子的宏观结构尺寸。

This technique reveals the dispersed polymer-rich phase as bright, while the continuous asphaltene-rich phase remains dark.

而饱含连续的asphaltene的阶段依然是黑暗，这个技术显露了将被分散的饱含聚合物的阶段作为明亮的。

It is suggested that the emulsify is formed when the oil on the water is stretched and stacked repeatedly by the wave, during which the water is mixed with the oil and entrain into the oil; particle asphaltene forms machinery protection film between oil and water, which stabilizes the water in the oil; the asphaltene film is formed through the accumulation when the water cohere; the resin of high viscosity can intensify the film.

通过对文献资料数据和不同观点进行分析及油水运动特点的实验观察，对溢油乳化物形成机制提出新的见解认为：乳化物是原油在波浪作用下反复拉伸和堆积中发生油水混合、水被夹带入油中而形成；颗粒态沥青质在水滴外形成机械保护膜将其稳定，它是水滴凝聚受阻时在油水界面积累而成，胶质的高粘性强化保护膜起到辅助作用。

There was no residue or few from asphaltene reprecipitation after acidolysis asphaltene, and using fatty acids were extracted by hexane.

结果表明，相同阳离子的不同羧酸盐活化能和频率因子分布特征相似，拥有相同的均值，不同之处在于短链的比长链的羧酸盐振荡幅度宽；不同阳离子的同种羧酸盐，活化能和频率因子分布却相差很大。

The results were as follows: 1 at normal or high temperature, the selected asphaltene dispersant could reduce the association of asphaltene molecules, 2 hydrogen-transfer of FCC decanted oil and its sub-fractions were evaluated by using anthracene and 9,10-dihydroanthracene as chemical probes, one of sub-fractions could be taken as hydrogen-donor.

本文首先从渣油生焦的关键组分沥青质入手，为热处理降蜡筛选抑制生焦的添加剂，在生焦率低于0.1w%的前提下，提高热裂解降蜡的深度。

The cokes are come from aromatics, colloids, asphaltene and Carbenes which are polycondensated and dehydrogenated. The processing of coking in the system are as follows: aromatics－→colloids－→asphaltene－→Carbenes－→cokes.(4) Coking can be avoided in the plasma reactor by feeding coal powder of 40～60 mesh (30%) and coal powder of less than 140 mesh (70%).

3结焦主要发生在等离子体反应较高温区，由煤中的芳香分、胶质、沥青质和碳青质缩聚脱氢形成；装置结焦形成的大体途径为：芳香分－→胶质－→沥青质－→碳青质－→焦质。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。