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十六烷值指数
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  “十六烷值指数”译为未确定词的双语例句
     It contains no gasoline distillate but its diesel yield and cetane number index are high relatively.
     由于该原油无汽油馏分 ,但柴油馏分收率较高且其十六烷值指数较高。
短句来源
     The aromatics content and specific gravity of the treated diesel were also decreased, and the cetane number was somewhat increased.
     同时可降低柴油的芳烃含量及密度,且十六烷值指数有所提高。
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  相似匹配句对
     the cetane number of diesel fuel was increased.
     柴油十六烷增加。
短句来源
     PREDICTION OF CETANE NUMBER OF HYDROCARBONS IN DIESEL OIL BY USING
     用拓扑指数法预测柴油中烃类的十六烷
短句来源
     On the Growth and Distribution of Values of Exponential Series
     指数级数的增长性和分布
短句来源
     Cetane index are higher than the value in the contract.
     十六烷指数高于合同指标;
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     The Research Development on the Cetane Improver for Diesel Fuel
     十六烷改进剂研究进展
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  cetane index
Estimation of cetane index for esters of fatty acids
      
A simple method for estimation of cetane index of vegetable oil methyl esters
      
Rambutan seed was an exception, with a lipid content of only 14.7%, but a high cetane index (67.1); thus, it was included in this report.
      
A 25% SRO/diesel blend had an estimated cetane index of 32.4 compared to 38.1 for diesel fuel only.
      
The kinematic viscosity, cold filter plugging point, cloud point, flash point and cetane index were determined.
      
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The characteristics of crude oil from Lunpola of Xizhang were studied and the properties of different fractions were analyzed. The results indicate that this crude oil has the characteristics of high density(ρ 20 =0.949 2 g/cm 3 ),high viscidity(ν 50 =23 455.5 mPa·s ),crude oil with water,(ν 50 =15 128 mPa·s) and high solidifying point (48 ℃),further more ,the content of water in the oil is very high(33.3%) and this crude oil is rich in wax and resin and less in asphaltene, it belongs to low sulfur...

The characteristics of crude oil from Lunpola of Xizhang were studied and the properties of different fractions were analyzed. The results indicate that this crude oil has the characteristics of high density(ρ 20 =0.949 2 g/cm 3 ),high viscidity(ν 50 =23 455.5 mPa·s ),crude oil with water,(ν 50 =15 128 mPa·s) and high solidifying point (48 ℃),further more ,the content of water in the oil is very high(33.3%) and this crude oil is rich in wax and resin and less in asphaltene, it belongs to low sulfur meso-base crude. So the temperature of storage, movement ,collection and transport for the crude oil with water(ν 90 =273 mPa·s) should be over 90 ℃,the corresponding temperature for the crude oil without water should be over 100 ℃(ν 100 =269 mPa·s ,the crude with water),otherwise it is difficult for the crude oil to collect and transport. It contains no gasoline distillate but its diesel yield and cetane number index are high relatively. A reasonable processing scheme was put forward for producing diesel oil,paraffin,lubricating baseoil and heavy traffic paving asphalt based on its characteristics in Xizang.

研究了西藏伦坡拉原油的性质 ,并对各不同馏分的特性进行了分析。结果表明 ,该原油密度大 (ρ2 0 =0 .9492 g/cm3) ,粘度超稠 (υ50 =2 3 45 5 .5mPa·s ,含水原油υ50 =15 12 8mPa·s) ,凝点高 (48℃ ) ,水含量极高 (33.3% ) ,蜡含量较高 (14.34% ) ,胶质含量高 ,沥青质含量低 ,属低硫中间基原油。由上述原油的特点知 ,含水原油储、运、集、输的温度应在 90℃ (含水原油υ90 =2 73mPa·s)以上 ,脱水原油储、运、集、输的温度应在 10 0℃ (含水原油ν10 0 =2 6 9mPa·s)以上 ,否则会给集、运、输带来困难。由于该原油无汽油馏分 ,但柴油馏分收率较高且其十六烷值指数较高。为解决集、运、输等困难 ,根据原油特性 ,提出了利用此原油在当地进行加工的方案。指出用该原油生产柴油、石蜡、润滑油基础油和重交通道路沥青是较为合理的加工方案

Diesel desulfurization by selective oxidation/extraction was studied in the laboratory. The preliminary test result showed that the sulfide in diesel could be efficiently removed by using the said method with peroxyacid as oxidant and furfural as extracting agent, and the desulfurization rate was normally in the range of 60% to 80%. The sulfur content of Changling straight-run diesel was reduced from 1500μg/g to 472μg/g after treating, which met the specification of less than 500μg/g. The aromatics content and...

Diesel desulfurization by selective oxidation/extraction was studied in the laboratory. The preliminary test result showed that the sulfide in diesel could be efficiently removed by using the said method with peroxyacid as oxidant and furfural as extracting agent, and the desulfurization rate was normally in the range of 60% to 80%. The sulfur content of Changling straight-run diesel was reduced from 1500μg/g to 472μg/g after treating, which met the specification of less than 500μg/g. The aromatics content and specific gravity of the treated diesel were also decreased, and the cetane number was somewhat increased. The said method was expected to provide a new route for producing clean diesel fuel.

对柴油选择性氧化-萃取脱硫工艺在实验室进行了探索,初步试验结果表明:以过氧酸为氧化剂,糠醛为萃取溶剂,采用该方法可有效脱除柴油中的硫化物,脱硫率一般在65%~80%。对长岭直馏柴油进行处理后硫含量可从1500tμg/g降为472μg/g,符合国际燃料对柴油硫含量不大于500μg/g的要求。同时可降低柴油的芳烃含量及密度,且十六烷值指数有所提高。该工艺有望为我国炼油企业生产清洁柴油提供一条新途径。

Enter into 21 century the big challenge for Petroleum Industry is environment protection. The

进入21世纪,石油工业面临的最大挑战是环保。2002年6月发表的世界燃料规范新的草案将汽油和柴油按满足排放分成4个等级。世界燃料规范认为,可以使用MTBE及乙醇增加辛烷值;燃料中的硫含量影响排放,因此提出超低硫共至无硫;低硫柴油要加入润滑性改进剂;烯烃易结垢造成喷嘴堵塞,因此要加入适量清净剂;汽油要控制芳烃含量;柴油使用十六烷值改进剂要考虑本身的十六烷值指数

 
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