原料天然气组分变化对LNG装置的影响及对策

介绍了广安LNG装置运行中,因原料天然气组分变化大而出现的重烃低温堵塞和乙烷适应性问题,阐述了现场现象,分析了问题原因,论述了解决方案和应用效果。现场采取调整工艺参数,增加活性炭吸附脱除重烃等措施后,装置运行正常。认为原料气组分对LNG装置运行具有很大的影响,作好新建LNG装置原料天然气组分的检测和组分变化的分析预测十分重要。     

浅谈煤层气气质分析测试技术

简要分析了我国煤层气气质分析方法现状,通过分析比较目前我国采用的煤层气气质分析方法,结合现场试验,研究了这些方法对煤层气的适应性。结果显示,大部分现有方法对煤层气适应性较好,部分方法需要改进以便更好地适应煤层气气质分析。在此基础上,提出了煤层气分析方法及其标准化建议。     

The spider environment

Visual composition is an interactive development of different applications by the direct manipulation of reusable components. We believe that the visual composition approach deals directly with the complexity of large software systems, making their development easier, more flexible, and easier to be understood. This is accomplished by implementing abstraction, reuse and visualization concepts. The developer becomes a component builder and no longer creates large applications that are hard to maintain and enhance. The user will have the freedom to choose the components he needs to build an application, and to mix and match components from different developers until the desired functionality is achieved. The visual Spider environment allows the creation of different kinds of applications. Copyright © 1999 John Wiley & Sons, Ltd.     

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 为测试热压型煤网带链接处连接轴与轴孔在高温负载范围能否失效,研制了简单的阻隔高温传热装置。把该装置安装在Instrson 5500R电子万能材料试验机上;高温拉伸试验证明了该装置起到了隔热作用,完成了链条测试试验。     

对环境友好燃料炼厂的技术要求：I.美国现状概述

尽管目前对汽油组分影响各种环境条件的理解还有限,但已经认识到,现有燃料中的几种组分若以高浓度释放到大气中,对环境是有害的,如溢漏、挥发损耗或不完全燃烧。这些组分包括芳烃特别是苯、高蒸汽压烃如ｎ－丁烷、反应性烃如烯烃以及硫化合物,它们会促使烟和酸的形成,本文将阐述与当前炼油加工过程有关的这些环境问题     

A new test cell for the evaluation of thermo-physical performance of facades building components

How do the new building façade components work under real climatic conditions? The question is especially related to the dynamic behaviour of new and complex components such as the ventilated walls, the Phase Change Material, or others that use nano-technologies and aerogels. One of the objectives of the undergoing research activity, named Abitare Mediterraneo, is the evaluation of their thermal behaviour through the use of an outdoor test cell, in order to reproduce under the real external conditions the performance of these components, and consequently define the main thermal parameters such as the attenuation factor and the thermal inertia, characterising the component; moreover, the results will be used to write new algorithms for dynamic simulation tools allowing an appropriate evaluation of the complex behaviour of the whole building at a real scale condition. The new test cell is realised in Florence, Italy. The design starts from the study of the experience of the existing PASSYS test cells, overtaking the main weakness of the building structure and of the heat-flux sensors.     

Effect of alloying elements on the behaviour of TiAl-based alloys

TiAl-based alloys containing Nb, Mo and Cr have been produced by induction melting both under an Ar atmosphere and in vacuum. Fracture toughness and isothermal oxidation tests at 900 °C have been performed on a number of alloys in order to evaluate the effect of alloying elements on both fracture toughness and hot corrosion. The results highlighted that there is an alloy composition range that could allow to obtain a good compromise between high temperature oxidation resistance and fracture toughness. In fact only for a selected Al/Ti ratio and a limited content of alloying elements it is possible to attain the alloy microstructural control and, for Mo free alloys, good protectiveness against oxidation.     

杜瓜子加工工艺

测试了杜瓜子的基本组成成分 ,其中蛋白质和脂肪质量分数较高 ,达 32 .2 4 %和 5 2 .33% ;得出了杜瓜子的较佳脱苦条件为 10 g/dL食盐水煮 15min ,同时对杜瓜子的加工工艺进行了优化 ,得出的最佳干燥参数为 :烘温 10 0℃ ,1.5cm堆积厚度 ,烘时 2 .5h ,隔 30min翻动一次 .