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液态
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    The GY_(48K) Type Tank Car for Liquefied Gas with Low Temperature
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    Simple Analysis of the Definition Method to the Density and the Expansion Coefficient of the Petrol Products
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A micro-pulsed pyrolysis chroma tograph has been developed for individual liquid hydrocarbon and mixed hydrocarbons. Reaction products distribution of pulsed pyrolysis primary reaction of individual hydrocarbon was investigated with this system, kinetics data of n-hexance pyrolysis were determined for pulsed reaction. Pyrolysis performance of Daqing light diesel was studied with a micro-pulsed reactor and a continuous tubular reactor. Consistency of data from pulsed pyrolysis and model reactor of industrial...

A micro-pulsed pyrolysis chroma tograph has been developed for individual liquid hydrocarbon and mixed hydrocarbons. Reaction products distribution of pulsed pyrolysis primary reaction of individual hydrocarbon was investigated with this system, kinetics data of n-hexance pyrolysis were determined for pulsed reaction. Pyrolysis performance of Daqing light diesel was studied with a micro-pulsed reactor and a continuous tubular reactor. Consistency of data from pulsed pyrolysis and model reactor of industrial cracking furnace with various light diesel feedstocks was studied. The micro-pulsed pypolysis technique has been proved to be quick, economical, of small sampling volume, and capable of giving cracking response of feedstock structure and composition. It will find practical use in pyrolysis basic studies, feedstock evaluation and olefin production prediction.

发展了一种可以适应各种轻重液态纯烃和混合烃的微型脉冲热解色谱系统。使用该系统考察了纯烃的脉冲热解一次反应产物分布。并用脉冲法测定了正己烷热解的动力学数据。以大庆轻柴油为原料,对比了微型脉冲热解和连续式管式反应器热解的性能。还考察了不同轻柴油的脉冲热解与工业裂解炉和模拟实验炉结果的一致性。结果表明:微型脉冲热解能较好地反应不同纯烃及混合烃的结构和组成特性,具有快速、经济、耗样极少等特点,它在烃类热解的基础研究和评选、预测烯烃生产原料方面具有一定的实用价值。

There are two conditions in building ethylene spherical tank of high pressure (2 MPa~2.gMPa),low temperature (-29~-31°)and low pressure (0.07MPa)、ultra-low temperature(-104℃)It has more economical benefit to choose materials of building tank according to two kinds of different storage conditions.At present,there are sta- ndard specifications abroad about designing materials choosing of tank.The 9%Ni steel has high strength and good ductility at low temperature for building ultra-low tempera- ture tank(-104℃)aborad.Our...

There are two conditions in building ethylene spherical tank of high pressure (2 MPa~2.gMPa),low temperature (-29~-31°)and low pressure (0.07MPa)、ultra-low temperature(-104℃)It has more economical benefit to choose materials of building tank according to two kinds of different storage conditions.At present,there are sta- ndard specifications abroad about designing materials choosing of tank.The 9%Ni steel has high strength and good ductility at low temperature for building ultra-low tempera- ture tank(-104℃)aborad.Our country is trying to find such experiences.Some ethy- lene spherical tanks were made with 9%Ni steel,and others were made with 490MPa low-temperature,high strength steel in our country.Now both of them are running very well at low temperature,high pressure conditions.In the light of running state and ins- pecting the inside surface of the tank,it is more economy and rational to build high pressure and low temperature liquid ethylene spherical tank with high grade,low tem- perature and high strength steel.Otberwise,it is more waste to build the tank with 90% Ni steel.

液态乙烯一般可分为高压(2MPa~2.9MPa)低温(-29~-31℃)储存及低压(0.07MPa)超低温(-104℃)储存。根据这两种不同的储存条件选择不同的建罐材料很有经济价值。目前,国外已有这方面设计选材的标准规范。9%Ni 钢强度高,在低温条件下有良好的韧性,国外用于建造超低温(<-104℃)储罐,已有了不少成功经验,国内尚在摸索阶段。国内现役的乙烯球罐一部分是用9%Ni 钢制造的,另一部分则是用490MPa 级低温高强钢,均在高压低温条件下运行,从运行情况和开罐检查的结果来看,对于储存高压低温的液态乙烯球罐,采用优质低温高强钢比较经济合理,而用9%Ni 钢就有些浪费了。

The article introduces two kinds of storage methods of liquid light hydrocarbon in common use, compares the two methods on economy and safety and points out the applicable scope of these two storage methods.

本文首先介绍了液态轻烃常温高压储存法的设计温度、设计压力和罐容的确定,以及常温高压罐的防爆措施.然后介绍了液态轻烃低温常压储存法的工作原理,以及低温常压储罐的型式和结构,并重点介绍了双金属圆筒型、双层预应力混凝土壁、组合式低温储罐,并提出了低温常压储罐的设计要点.最后,从经济性和安全性对这两种储存法进行了对比,进而指出这两种储存法的适用范围.

 
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