碳氢化合物制冷剂研究综述

讨论了碳氢化合物作为制冷、制热设备工作流体的优缺点，认为在加大对碳氢化合物制冷剂的循环、传热、热力性能等方面研究的同时，应当加快我国安全使用标准的修订，使其符合国际要求。     

泡沫：从肥皂泡沫到水成膜泡沫灭火剂（AFFF）

大约在汽车出现的时代,泡沫就被引入到消防设备。它的出现是为了适应控制和扑灭比水轻且不溶于水的液体所引发火灾的需要,比如为汽车添加的燃料。随着汽车数量的增加,燃料的社会储备量也随之增加,可想而知,包括挥发性有机液体(大部分是碳氢化合物)的火灾数量也会不断上升。早期     

等离子蚀刻气的命名规则

如果碳氢化合物的氢原子部分或全部被卤素(氟、氯、溴、碘)取代，就称之为卤代烃。现在，这类碳氢化合物在半导体元件等离子蚀刻工艺中得到了广泛的应用。但是，在等离子工艺产生之前，化学工业已给这类化合物规定了标识号码，如氟里昂-14中的“14”。这类标识号码是其化学名称的简写符号，但在微电子学领域里，了解这一点的人寥寥无几。     

用气相色谱测定液氧中乙炔及其他碳氢化合物的含量

利用气相色谱浓缩法和气相色谱直接法测定液氧中乙炔及其他碳氢化合物含量。通过比较。用气相色谱直接法测定，方法简便，快捷，准确。     

用CSD方程计算R290、R600、R600a、戊烷的热力性质

本文用ＣＳＤ方程计算了Ｒ２９０、Ｒ６００、Ｒ６００ａ、戊烷的热力性质。这几种天然碳氢化合物的ＣＳＤ方程常数值可用于其混合工质的汽液相平衡计算     

浅谈空气中机动车尾气对人体的危害

近几年来,随着我国经济建设和城市化进程的快速发展,运输行业作为我国国民经济的支柱产业,得到了迅猛的发展.     

Determination of Lateral Extension of Hydrocarbon Concentration Sealing Caprocks by AVO Analysis

The caprock is one of the key factors for a reservoir, especially for a gas reservoir. Whether the caprocks can block off the gas is of significance for the accumulation and preservation of the gas reservoir. In this paper, we use the Amplitude versus offset (AVO) seismic technique to determine the lateral extension of the hydrocarbon concentration sealing caprocks. The essence of this technique is to detect the variations of the reservoir bed physical properties by monitoring the variations of the reflection coefficient of seismic waves upon the interfaces between different lithologies.Generally it is used to indicate hydrocarbon directly. For the hydrocarbon concentration sealing caprocks, the change of hydrocarbon concentration may cause the change of physical properties of the caprocks. Therefore it is possible to evaluate the hydrocarbon concentration sealing ability of the caprocks by AVO. This paper presents a case study using AVO to determine the lateral extension of the hydrocarbon concentration sealing caprocks. The result shows that this method is helpful for the exploration of the region.     

贫燃条件下净化汽车尾气中NOx的金属氧化物催化剂的研究进展

综述了在贫燃条件下以碳氢化合物为还原剂,在金属氧化物催化剂催化下对NOx选择还原的研究进展,主要介绍了以Al2O3为载体的氧化物催化剂的组分和制备方法等对催化剂结构和催化性能的影响,对催化剂的抗二氧化硫和水的性能也做了介绍,然后指出了金属氧化物催化剂的发展方向.     

Geological factors associated with unsuccessful exploration wells in the northern margin of the Qaidam basin

We investigated the geological factors associated with unsuccessful exploration wells in the northern margin of the Qaidam basin to better understand their cause. The structural situation, the hydrocarbon accumulation mechanism and unsuccessful well data collected from 1996 to 2005 were studied. The results show that the main geological factors associated with unsuccessful exploration wells are a lack of effective source rocks and a lack of effective traps, as well as the migration-accumulation conditions that exist in this area. The basin was reformed by Meso-Cenozoic tectonic evolution. Multi-stage tectonic activities have both positive and negative effects on hydrocarbon accumulation. Source rocks distribution, effective migration channels, effective traps and the tectonic evolution effects on hydrocarbons should be the key objects for further studies.     

环保溶剂型真空清洗机

VCM系列环保溶剂型真空清洗机由真空清洗槽、真空蒸馏机、气液分离装置、真空泵、缓冲槽、控制柜等部件组成，采用碳氢化合物溶剂作清洗剂，在完全封闭条件下对工件进行清洗，具有安全、环保、清洗质量好、效率高、节能及运行成本低等优点，其应用推广具有良好的经济和社会效益。