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液化天然气工厂的投资成本是LNG工厂建设的重要指标,直接影响到液化天然气产品的成本。本文回顾了自60年代以来LNG工厂建设投资的发展趋势,介绍了现代LNG工厂的设计原则,指出影响LNG工厂建设投资的主要因素并提出若干节省投资的措施。图2表2参5。 相似文献
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液化天然气(LNG),是指将气态天然气在常压下冷却到零下162℃以下,使其由气态转化为液态。LNG具有性能高、热值大、成本低、便于储运等优点,建设LNG工厂可很好地满足市场的天然气使用需求。目前,LNG已成为经济发达但能源紧缺的东南沿海地区的永久或过渡供气设施。本文以某市的LNG工厂建设为例,重点对LNG工厂的工艺设计流程进行了探析,并简要介绍了相关安全措施。 相似文献
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为提高天然气能量密度,通常将天然气液化后在其常压沸点约 112 K下存储。由于环保的要求,对液化天然气 (LNG)的需求量越来越大。对 LNG的生产及接收终端的储存及运输工程中的蒸发气 (BOG)的回收和利用是提高工厂经济效益的重要一环。讨论了压缩和再液化 BOG的回收方法。认为运用计算机模拟这一工程上新的工具,对提高 LNG工厂的安全性和经济效益,同时降低投资成本是很有帮助的。简介了这方面的一些事例,并提出了一些建议。 相似文献
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归纳了液化天然气(LNG)工厂换热器设计和运行中常见的传热问题。分别论述了换热器传热的内部问题和外部问题的成因和防止对策。 相似文献
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于海欢 《中国新技术新产品》2012,(19):101-101
我国有着丰富的天然气储量,液化天然气被公认是地球上最干净的能源。其制造过程是先将气田生产的天然气净化处理,经一连串超低温液化,天然气在液化过程中进一步得到净化,体积和重量大大减小,大大方便了储存和运输。本文将总结液化天然气的能源特点优势,重点谈谈液化天然气的加工工艺和储存方面的一些问题。 相似文献
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我国经济的快速发展,对天然气的需求量逐渐增大。尽管目前天然气产量连年增长,但仍不能满足经济发展的需求。天然气产地远离工业或人口集中地区,需要建设长距离的输送管线,这在一定程度上制约了天然气的利用。文章探讨了天然气液化过程中主要技术、液化天然气利用及安全问题,对于液化天然气的实际应用具有一定的参考价值。 相似文献
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随着我国经济社会高速发展,随之而来的能源供应不足和环境破坏严重等问题愈演愈烈。作为清洁能源,天然气发电也越来越引人注目。本文介绍了我国天然气资源概况,国内燃气机组分布和燃机企业运营态势,并从天然气价格、上网电价等方面分析了影响天然气发电产业发展的问题。阐述燃气发电机组在电力市场中的竞争不足,最后为天然气发电布局提出可供参考的建议。 相似文献
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Natural gas has become a transitional bridge from fossil to green and clean energy worldwide. The importance of natural gas utilization in energy structure optimization and green development is no exception for China. However, the supply of China’s natural gas limits the country’s demand with three factors. (1) China’s natural gas resource is relatively rich, but its quality is poor with deep burial depth. Therefore, the annual plateau yield of natural gas cannot be high, with an estimated value of approximately 260–270 ×109 m3. (2) The demand for natural gas in China’s economic development is growing rapidly. The peak demand is estimated to be approximately 550–650 ×109 m3 per year or even higher. The import volume of natural gas will soon exceed that of domestic self-produced gas. (3) Natural gas is a necessity closely related to livelihood. Particularly, a shortage in natural gas supply affects social stability. Therefore, its external dependency should be under 50% and not exceed 60%. In this study, the future situation of China’s natural gas is forecasted, and relevant countermeasures and suggestions are proposed in accordance with research on China’s natural gas resource potential, production trend, supply-demand link, and gas supply safety factors. 相似文献
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目前国内分析天然气组成分析方法大都是气相色谱法,气相色谱法分析天然气组成需要使用国家标准物质.本文调查了国内天然气标准物质配置情况发现,天然气标准物质配置采用称量法进行,并且有严格的配置程序和注意事项.国内具备天然气标准物质配置能力的单位有9家单位,其中只有中国计量科学研究院能配置国家一级标准物质,其他单位只能配置国家... 相似文献
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现阶段我国天然气贸易交接过程中,计量方式较多采用体积计量,这种计量方式不仅不能满足天然气按质论价、优质优价的商品交易原则,而且需要依靠价格昂贵的色谱仪分析来实现。天然气能量计量能够避免体积计量所带来的缺陷,同时计量方式又具有较高准确性,越来越成为世界上各个国家天然气贸易结算的方式。基于局部天然气管网建立的天然气能量计量的赋值算法,对1周内天然气能量进行了预测,并将预测值与测量值进行了对比,预测值与测量值的相对误差控制在1.8440%左右,表明所建立的赋值算法能够较好地预测在一定时间内的天然气热值。 相似文献
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阐述利用天然气输送能量的必要性和效益,详细介绍气态天然气和液化天然气输送能量利用的方法和流程,最后提出跨行业利用天然气输送能量的设想。 相似文献
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This article analyses the recent progressive increase in resourcequantity and production quantity of unconventional natural gas in China, describes its natural properties and the concepts, strategies and approaches of its development, summarizes the special techniques, management concepts and development modes formed in the process of its development, and puts forward proposals to accelerate the development of unconventional natural gas of China. The technically recoverable reserve of unconventional natural gas is 1.7 times that of conventional natural gas and its output in 2012 accounted for 41.8% of the total output in China. Chinese tight gas development has gained success, coal-bed methane development and shale gas production pilots have made important progresses. As the key feature of unconventional natural gas is "low grade", for the effective scale development, developers must build up the engineering concept of low-grade resources development, adhere to the low cost strategy, take the development route of "a step backward and then a step forward", apply such ideas and methods of engineering management as low cost dualistic integrative innovation, full control network management, economic limit theory, integrated operation and "four orientations" engineering management, establish a "two lows" engineering management system, and take reference of the successful development mode of the tight gas in Sulige and the coal-bed methane in the Qinshui basin. In order to achieve the objective of rapid development of nonconventional natural gas in China and to accelerate the development pace, the government should continue to increase support, to speed up the reform of natural gas price adjustment, to set up national comprehensive development and utilization demonstration areas, to input in sustainable technological research and to promote engineering management innovation.? 相似文献
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介绍马钢20000 m3/h空分设备低温液体泵、阀门、密封气系统、低温液体贮槽和液化装置运行中存在的问题,分析了原因。并根据空分设备工艺特点,对20000 m3/h空分设备进行相应技术改造,取得了很好的改造效果。 相似文献