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邹纯阳 《淮南职业技术学院学报》2005,5(3):13-15
为了保证5111(S)C15综采工作面以正常进度安全回采,通过深入现场对该工作面瓦斯主要来源,及构成进行了分析和研究,采取了一系列的瓦斯综合治理措施,提出了加强通风,保证足够风量,加强瓦斯检查,保证瓦斯监测系统正常到运行;采取煤壁浅孔注水,控制生产进度;对于工作面上隅角和架顶瓦斯超限,采用风幛引排处理;这些措施的综合运用效果显著,此工作面已安全回采完毕;对于瓦斯大的工作面需要加大瓦斯治理力度,加强瓦斯抽排,走综合治理之路,才能确保矿井安全生产. 相似文献
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在常压低温下采用非平衡等离子体技术研究低碳烷烃无氧烯烃化反应.研究结果表明:甲烷在等离子体中的脱氢偶联反应的主要产物是碳二烃;乙烷在等离子体作用下主要脱氢产物是乙烯、乙炔;甲烷和乙烷混合气可以在等离子体系中得到活化,生成乙烯、乙炔,为甲烷和乙烷在无氧气氛下不经分离直接活化制烯烃提供实验依据. 相似文献
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<正>With the large reserves of natural gas around the world,such as shale gas,methane hydrate,and biogas,research on how to utilize these alternative fuels has grown considerably.Current industrialscale processes for the conversion of natural gases to useful chemical feedstocks,which involves the conversion to syngas intermediates,are complex,inefficient and costly,and they generate large quantities of CO2 and coke byproducts.The efficient conversion of these natural gas fuels will require a process wherein the C-H bond of methane is activated,and the methane is selectively converted to useful chemical products while minimizing depth dehydrogenation and overoxidation.Many methods have been developed for the activation and conversion of methane with varying degrees of success,but thus far,none has been viable as 相似文献
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中国稻田温室气体的排放与减排 总被引:1,自引:0,他引:1
中国是世界上最大的水稻生产国, 水稻种植面积占全球总种植面积的30%。水稻生产在粮食安全方面起着重要的作用, 稻田却是温室气体甲烷(CH4)和氧化亚氮(N2O)的重要排放源。文章综述了稻田CH4和N2O的产生过程、影响因素及时空变异规律, 总结了近年来我国稻田CH4和N2O排放总量的估算结果, 并提出了针对性的温室气体减排措施。 相似文献
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土壤性质和非水稻生长期土壤水分对CH4 产生、氧化和排放的影响 总被引:1,自引:0,他引:1
土壤有机质含量是影响CH4产生的最重要土壤性质 .土壤CH4氧化能力与包括活性碳、有机碳和全氮含量在内的土壤理化性质之间都不存在显著相关性 .非水稻生长期较高的水分含量能促进水稻生长季节CH4的产生、氧化和排放 .在影响稻田CH4排放大尺度空间变异性的主要因素中 ,土壤水分历史可能比土壤性质更为重要 .结果表明 ,非水稻生长期土壤水分对水稻生长期CH4产生、氧化和排放具有极其重要的控制和调节作用 相似文献
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A mesoporous sorption complex catalyst was prepared by pore-forming modification and evaluated by the COz reactive sorption enhanced reforming (ReSER) process, which is used to produce hydrogen from methane. Three samples of polyethylene glycol (PEG) with molecular weights between 2000 and 20 000 were added as templates into a mixed slurry to create catalysts with different pore properties by further formation and calcination. The pore characteristics determined by Brunauer- Emmett-Teller (BET) analysis showed that one of the mesoporous catalysts, named M-NiAICa-6000, had a pore size of 9.2 nm and a surface area of 70.52 m2/g and the CO2 sorption capacity of this catalyst was 44% higher than that of the catalyst without the PEG 6000 modification. The catalyst was evaluated in the ReSER process in a fixed-bed reactor system at 0.1 MPa and 600 C with an H20/CH4 molar ratio of 4. An H2 concentration of 94.2% and a CH4 conversion of 86.0% were obtained at a carbon space velocity of 1700 h 1 while CO2 was hardly detected. 相似文献
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于新国 《晋城职业技术学院学报》2013,6(1):52-54
从国内外煤层气开采现状、煤层气开采专题文献信息资源数据库建设研究、煤层气开采专题文献信息资源数据库的资源类型等方面,对煤层气开采专题文献信息资源数据库建设进行了研究。 相似文献
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