CO2气相压裂防突技术在玉溪矿瓦斯抽放巷的应用

针对玉溪矿东瓦斯抽放巷瓦斯涌出量高、具有突出危险的煤层条件,选用了CO2气相压裂防突技术进行瓦斯防突处理。阐述了CO2气相压裂防突技术的原理,确定了CO2气相压裂防突技术参数——采用直径为50 mm、长度为2 m的压裂杆;然后在东瓦斯抽放巷布置6个钻孔,在钻场内布置5个钻孔进行瓦斯抽采防突;最后进行现场瓦斯浓度监测。结果表明,采用CO2气相压裂防突技术解决了东瓦斯抽放巷瓦斯突出危险,保证了工作面的生产安全。     

加快构建山西本省稳定气源

随着中国经济的发展及人们对环境保护认识的提高,清洁能源受到越来越广泛的关注,要发展更要环境的理念越来越深入人心。目前,山西正在实施＂气化山西＂战略,以实现清洁发展、低碳发展、绿色发展,立足于探讨建设山西本省稳定气源,确保足够的气源供应,筑牢山西经济社会发展的能源保障基石。     

Long term forecasting of natural gas production

Natural gas is an important energy source for power generation, a chemical feedstock and residential usage. It is important to analyse the future production of conventional and unconventional natural gas. Analysis of the literature determined conventional URR estimates of 10,700–18,300 EJ, and the unconventional gas URR estimates were determined to be 4250–11,000 EJ. Six scenarios were assumed, with three static where demand and supply do not interact and three dynamic where it does. The projections indicate that world natural gas production will peak between 2025 and 2066 at 140–217 EJ/y (133–206 tcf/y). Natural gas resources are more abundant than some of the literature indicates.     

WR_21_新一代的船用燃气轮机

ＷＲ－２１是２１世纪初的新一代船用燃气轮机,由于采用了间冷、回热技术,使其具有优良的变工况性能。本文综述了该机的研制历程,发动机的性能,各主要部件的设计和维护特点。     

燃气预混燃烧系统的优化设计与调试

系统地介绍了燃气全预混混合器的种类和预混燃烧系统的各种类型，重点叙述了用于玻璃棉成形用离心机加热系统和玻璃料料加热系统的燃气混燃烧系统的优化设计与调试情况，对预混燃烧技术进行了全面回顾，简要地分析了燃气预混燃烧技术的应用前景。     

燃用焦炉煤气的燃气轮机性能分析

将焦炉煤气用于燃气轮机发电,是有效利用焦炉煤气的形式。选用M701F型燃气轮机,对其燃用焦炉煤气的性能进行研究。为了得到更多关于该燃气轮机的性能参数,首先对该燃气轮机燃用天然气的设计工况下的性能参数进行计算,将计算结果输入ASPEN PLUS软件进行模拟,得到与设计值极为吻合结果。根据这些数据,计算M701F型燃气轮机燃用焦炉煤气工况下的燃气轮机性能参数,同样将计算结果输入软件进行模拟,最后得出结果。     

基于互换性原理的生物质燃气配制方法

对生物质低热值燃气的互换性配气方法进行了研究和探讨,比较并分析了不同的配气组合.研究发现:对于生物质类低热值燃气,按照控制燃烧特性关键参数的原则,需要根据基准燃气的具体特点,选用CH_4、H_2、N_2或C_3H_8、H_2、N_2等不同组合,实现精确配气;其互换性控制参数,一般选择华白数和燃烧势两个指标,进行生物质燃气的配气设计就可达到相当精度.     

垃圾填埋沼气的利用与加工处理

根据垃圾填埋沼气的特点以及作为民用燃料的可能利用途径,依照燃料标准对沼气的处理与加工技术进行了分析,认为首先应脱除沼气中的ＣＯ２和Ｈ２Ｓ等酸性气,并在压力下储存,利用现有工业技术处理后的沼气可与优质天然气相媲美。     

浅谈东峰煤矿上隅角瓦斯防治

就东峰煤矿工作面上隅角瓦斯积聚的形成原因展开了分析研究,并结合东峰煤矿的实际改变原U+I型巷道布置形式,采取有效技术措施,取得了预期效果,对解决相似放顶煤工作面上隅角瓦斯防治能有所指导和帮助。     

燃气轮机在我国天然气管道行业的应用现状

我国天然气管道建设的迅速发展带动了燃气轮机在国内的应用。本文全面总结了用于管道压缩机驱动的燃气轮机在国内的应用现状,分析了燃气轮机在我国管道行业中的应用特点以及运行中存在的问题,并对未来燃气轮机在管道应用中需要关注的问题进行了展望。     

A Large Potential Methane Source—Natural Gas Hydrates

Abstract

Natural gas, essentially methane, can be obtained from natural gas hydrate (NGH). NGH reserves are difficult to pinpoint in the subsurface, but large sources have been identified by seismic reflection. This is particularly so below the sea floor near continental shelf plates in the oceans deeper than 300 m as NGH is stable at 4°C and 50 bar pressure. When extracted, 1 m³ of NGH can contain 160 sm³ of gas. Currently, estimates of this gas resource are very uncertain, but recent estimates suggest perhaps 2,500 trillion sm³, but how much gas can actually be produced from these accumulations is totally unclear at present. NGH could possibly solve much of the energy needs after 2020, but safe ways of extraction still have to be designed. Possible methods include the injection of hot water or inhibitor or reduction of reservoir pressure, but none have yet been commercially tested. Great caution will be needed because catastrophic environmental damage is likely if the methane is carelessly released from the sediments. This article reviews the ‘state of the art’ of NGH.     

煤与瓦斯突出矿井采煤工作面注气驱替治理瓦斯试验

在前人研究气体驱替瓦斯技术理论的基础上,在煤与瓦斯突出矿井采煤工作面进行驱替瓦斯工业试验,并收集抽采流量、抽采浓度等相关参数进行对比分析。     

The security of gas supply—a critical issue for Europe?

Gas is competing with oil for being the dominant energy source. In electricity generation gas is to play as pivotal a role as oil in transportation. The security equation of gas and electricity become unseparably interrelated. Energy disruptions have considerable influence on the national accounts far beyond the direct cost of market participants (asymmetry). The present gas supply to the EU depends dangerously on too few sources and venues. There is a decided lack of optionality. The EU directly or through its members needs a clear proactive policy on “Security of Gas Supply” with a strong multilateral direction. The measures developed for the oil industry over the last 30 years can at least serve as a starting point for a constructive debate. When discussing security of supply dependence it is useful to clearly define the various risks one wishes to protect against. Free riders relying on alternative fuels without participating in their security systems are not permissible.     

工程机械厂的气体供应系统设计

扼要介绍了某工程机械厂的气体供应种类及供气方案，并对气源（各种汇流排及液化气站）的设置方案进行了探讨。     

LQ坳陷天然气成藏主控因素

渤海湾盆地LQ坳陷经历近20年的煤成气勘探,一直未取得大的突破；在广泛调研国内外煤成气勘探成功经验基础上,深入解剖大中型气田的成藏规律,结合渤海湾盆地济阳坳陷实际地质情况,总结出一套定量和半定量煤成气成藏的主控因素:具有较大的生气强度(生气强度大于20× 108m3/km2)；晚生烃、晚成藏；近源成藏,圈闭发育于生气强度中心附近；发育与主生气期匹配关系良好的有效圈闭；发育优质的区域盖层和局部盖层；低气势区聚敛型供烃单元.利用LQ坳陷勘探实践积累的煤系地层丰富的地质资料,结合定量、半定量煤成气成藏主控因素分析,认识到LQ坳陷具备煤成气成藏的地质条件(具有优越的生烃母质、主生气期较晚、全区生气强度一般在25×108m3/km2).在莘县断裂鼻状构造高部位部署并实施钻探G1井,日产天然气2.1×104m3/d,日产凝析油30.18t/d,取得了煤成气勘探的重大突破,打破了LQ坳陷多年来徘徊不前的勘探局面,带动了渤海湾盆地煤成气勘探的快速发展.     

Polymeric Membranes for Natural Gas Conditioning

Abstract

All raw natural gas needs conditioning. Polymeric membrane based gas separation processes, being cost and energy effective, environmentally friendly, as well as simple and versatile, have proven their potential as better alternatives to traditional processes for natural gas over the last three decades. In this article, the polymeric membrane based separation mechanisms for natural gas are analyzed. Two major membrane-based conditioning processes, acid gas removal from natural gas, and natural gas dehydration are presented. The current status, membrane material used, technological processes, limitations, and attractive approaches to overcome these limitations of these applications are discussed.     

Development of natural gas vehicles in China: An assessment of enabling factors and barriers

Replacing conventional gasoline or diesel vehicles with natural gas vehicles (NGVs) is necessary if China hopes to significantly reduce its greenhouse gas emissions in the short term. Based on city-level data, this paper analyzes the enabling factors and barriers to China's NGV development. We find that a shortage in natural gas supply and a relatively high price ratio of natural gas compared to gasoline are the main factors impeding China's NGV development. Imbalanced development between natural gas refueling stations and NGVs also hinder the popularity of these lower-carbon vehicles. While various policies have been implemented in recent years to promote NGVs in China, only those encouraging adoption of NGVs by the private sector appear effective. To promote further NGV development in China, the following strategies are proposed: (1) improve natural gas delivery infrastructure across the country; (2) reasonably reduce the relative price of natural gas compared to gasoline; (3) give priority to middle-income and medium-sized cities and towns, since siting natural gas refueling stations is easier in these areas; and (4) promote the use of NGVs in the private sector.     

论燃气轮机在天然气输气管道上的选用和配套

简要分析了天然气轮气管道、天然气压缩机、燃气轮机的主要特性,进而论述了在天然气输气管道中选用和配套燃气轮机时应该注意一些问题。     

Turkey's natural gas policy

This article deals with natural gas policy of Turkey. Natural gas became important in the 1980s. In recent years, natural gas consumption has become the fastest growing primary energy source in Turkey. Natural gas becomes an increasingly central component of energy consumption in Turkey. Current gas production in Turkey meets 3% of the domestic consumption requirements. Natural gas consumption levels in Turkey have witnessed a dramatic increase, from 4.25 Bcm (billion cubic meters) in 1991 to 21.19 Bcm in 2003. Turkish natural gas is projected to increase dramatically in coming years, with the prime consumers expected to be industry and power plants. Turkey has chosen natural gas as the preferred fuel for the massive amount of new power plant capacity to be added in coming years. Turkey has supplied main natural gas need from Russian Federation; however, Turkmen and Iranian gas represent economically sound alternatives. Turkey is in a strategically advantageous position in terms of its natural gas market. It can import gas from a number of countries and diversify its sources. Turkey's motivation for restructuring its natural gas ownership and markets stems from its desire to fulfill EU accession prerequisites in the energy sector.     

龙岩市垃圾卫生填埋场填埋气体产量预测研究

对填埋气的回收利用,既能减排温室气体,又能回收能源。根据龙岩市的垃圾组成、填埋场处理量等条件,系统地分析了各种产气模型的计算方法、优缺点及适用条件,合理地选择了产气模型和参数。根据该模型计算出龙岩市垃圾填埋场气体产量和气发电机装机容量。