In contact with a hot surface, naphtha petroleum fractions crack to produce ethylene and propylene.

1、

Various solvent naphtha fraction generally have to go through refining.

各种溶剂油馏分一般都需要经过精制加工.

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2、

The Naphtha Stipper Reboiler duty is not decreased proportionally to the laden methanol to be stripped.

石脑油汽提塔再沸器的负荷不是与被汽提的富甲醇按比例减少.

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3、

The article introduces development status of solvent naphtha productive technology both home and abroad.

介绍了国内外溶剂油生产技术的发展现状.

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4、

Methods: Apply microwave extraction in determining content of naphtha in Eupatorium Fortune.

方法: 运用微波技术对佩兰中挥发油的含量进行测定.

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5、

Solvent naphtha is one of the five broad areas of petroleum products.

溶剂油是五大类石油产品之一.

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6、

The copper belt corrosion was caused by H 2 S and active sulfur in naphtha.

证明了铜丝带腐蚀是由石脑油中的H2S和活性硫引起的.

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7、

The technical features, process design and commercial application of FDFCC cracked naphtha olefin reduction were described.

FDFCC工艺是降低催化汽油烯烃含量的有效技术.论述了该工艺的技术特点、流程设计和工业应用情况.

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8、

A marble-sized ball, originally of camphor but now of naphthalene, stored with clothes to repel moths.

用来使蛀虫远离储存的衣服的樟脑或萘的小圆球.

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9、

The p dichlorobenzene and naphthalene in mothproofing agent was determined by infrared spectroscopy.

用红外光谱法测定了防蛀剂中对二氯苯和萘的含量.

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10、

The development condition and the problems in practice of Naphthalene series superplasticizer were also analysed.

分析了萘系高效减水剂的发展状况及应用中存在的问题.

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11、

For production of industrial naphthalene, the Coking Works of Anyang Iron & Steel Group Co.

安钢焦化厂工业萘生产系两炉两塔工艺流程,过程复杂,控制参数多,指标严格.

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12、

Dispersants such as lignin type, naphthalene sulfonate-formaldehyde condensates and polycarboxylic acids were introduced.

介绍了木质素类分散剂、萘磺酸甲醛缩合物和聚羧酸系分散剂.

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13、

The purity of refined naphthalene could be more than 99.5 % by said fractional crystallization process.

通过分级结晶提纯过程,可获得纯度达到99.5%以上的精萘产品.

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14、

Oil and Lubricants, Valves, Pipes and Pipe Fittings Naphthalene, Valves, Pipes Fittings Oil and Lubricants.

采购产品油和润滑物, 阀门, 管和管配件, 装阀门, 管配件,油和润滑物.

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15、

In fact, camphor and naphthalene balls are different in nature.

事实上, 樟脑和臭丸在性质上是不同的.

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16、

The polymer films of naphthalene , including naphthylamine , naphthalene and aminonaphthalenol, were obtained by electrochemical polymerization method.

以电化学方法得到一系列的萘衍生物聚合膜.

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17、

The gained achievements have a certain guiding significance for the industrial production of Naphthalene series superplasticizer.

所得成果对萘系高效减水剂的工业生产具有一定的指导意义.

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18、

The development of polyethylene naphthalate ( PEN ) and its intermediate 2,6-naphthalene dicarboxylic aicd ( 2,6-NDA ) is reviewed.

叙述了PEN及其中间体2, 6- 萘二甲酸的发展情况.

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19、

The amino acids were derivatized with naphthalene _ 2,3 _ dicarboxyaldehyde ( NDA ) to produce electroactive substances.

氨基酸用萘-2,3-二羧醛 ( NDA ) 衍生为电活性物质.

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20、

Several production methods, market demand and development of 2-naphthol are introduced in this paper.

本文着重介绍了 2- 萘酚的各种生产工艺及市场需求.

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