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推广工业炉窑燃用工业型煤是我国防治煤烟型大气污染和节约能源的重要措施,扼要介绍了工业型煤中的最新产品生物质工业型煤,从燃烧工业型炮角度讨论了生物质工业型煤所具有优异燃烧性能及其它特性,最后认及生物质工业压制生产中关键设备GXM600-45工业型煤高压成型机。 相似文献
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为研究以炭化生物质和煤泥为原料制备的生物质型煤的燃烧特性,利用马弗炉对生物质型煤进行了燃烧试验研究。结果表明,通风方式和炭化生物质与煤泥的混合比例对生物质型煤燃烧性能的影响要比炉膛温度、燃烧时间和成型压力对其的影响显著。全开炉门时,生物质型煤的燃烧速率最快。仅添加少量的生物质时,生物质型煤的燃烧速率就有明显提高,表明生物质对型煤的燃烧有较好的促进作用。 相似文献
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本研究探讨了用氢氧化钠改性生物质秸秆作为型煤粘结剂的可行性,考察了NaOH溶液浓度对生物质改性的影响以及生物质添加量、无机物(MgO和MgCl2)添加量对型煤机械强度、防水性能和着火温度的影响.研究结果表明NaOH改性液的浓度为1.0%~2.0%时,制得的生物质型煤有较高的机械强度;生物质添加量在2%~20%范围内时,随生物质量的增加,机械强度增加,着火温度降低,但防水性较差;而在生物质型煤中加入适量无机粘结剂(MgO和MgCl2)后,型煤有很高的浸水强度,表现出优越的防水性能;最后得出各项性能指标优异的改性生物质粘结剂的配方. 相似文献
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SOx污染控制技术的现状与发展 总被引:9,自引:0,他引:9
阐述了SOx生成机理、S02污染控制技术的分类以及其国内外发展现状。突出介绍了几种典型S02污染控制技术的发展,如湿式石灰石烟气脱硫(FGD)技术、新型半干式FGD技术、工业型煤固硫技术的新方向—生物质型煤、活性炭脱硫脱硝技术以及脉冲放电法脱硫脱硝技术。依据分析给出了一些建议。 相似文献
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Meiqing Fan Hengyi Yuan Xin Zhang Bo Wang Xiao'e Wang Ying Gao Xu Zeng Bo Ren Xiaodong Yang 《International Journal of Hydrogen Energy》2021,46(29):15181-15191
The energy density of a flexible all-solid-state supercapacitor (ASC) requires new electrode material with special structure and morphology as a prerequisite for its secured improvement. In this paper, a new morphological exploration of chicken nuggets-like core/shell NiCo2O4/MnO2 (NCM) nanosheet arrays on Ni foam was employed. The application of this special morphology aims to greatly improve the electrochemical performance of the cathode electrode. Additionally, Buckwheat Biochar (BBC) is utilized as the anode while the PVA/KOH thin film is prepared as the separator. The chicken nuggets-like core/shell NCM nanosheet arrays were obtained by a two-step hydrothermal method. A series of characterization methods were carried out to further support the core/shell's well-designed structure and precise composition. The tests exhibited excellent specific capacitance of 593.3 F g?1 at 5 mA cm?2 and outstanding cycling stability with a retention of 90% after 10000 cycles. Furthermore, the assembled NCM//BBC ASC device indicated a high specific capacitance (239 F g?1 at the current density of 5 mA cm?2), this is in due part of the unique architecture of NCM nanosheet arrays and interconnected special porous structure of the BBC and the thin film PVA/KOH. Hence, the assembled ASC device exhibited high energy density (an energy density of 58 Wh·kg?1 at 3263 W kg?1) and remarkable cycling stability. 相似文献
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页岩气产业全要素生产率分析——基于美国数据的实证研究 总被引:1,自引:0,他引:1
页岩气开发尚处于起步阶段,具有初期投入高、产出周期长、投资回收慢的特点,页岩气开发公司在开采技术、生产规模和管理决策等方面面临重大挑战。运用BBC模型和DEA-Malmquist指数法,对2007~2011年美国以页岩气开采为主要业务的19家上市公司的生产效率进行分析,研究结果表明:美国页岩气公司技术效率呈现上升趋势,而纯技术效率是技术效率增长的主要贡献因素,规模效率出现一定波动,对技术效率产生了一定影响;不同规模的页岩气公司技术效率存在差异,公司规模越大,技术效率越高;样本期间内全要素生产率出现负增长,公司业绩的提升主要依靠粗放型的规模扩张来实现,而非通过集约型的生产率提升来实现,纯技术效率每年呈现不同程度的提高,规模效率呈现上升态势,只有技术进步值偏低,影响了全要素生产率的进一步提高,因此必须大力推进技术创新,提高技术进步对全要素生产率的贡献率。我国页岩气产业的发展应提倡规模经济,鼓励公司通过内部扩张和外部重组获取规模经济,同时要注重进一步提升管理水平,最重要的是提高企业技术创新能力。 相似文献
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Zeynel Öztürk 《International Journal of Hydrogen Energy》2021,46(21):11804-11814
Hydrogen storage in porous materials by physical adsorption is being discussed to provide widespread usage of hydrogen energy systems. One of the recent hydrogen storage media that store hydrogen physically is Porous Graphene Frameworks (PGFs). In the study, three different PGFs were constructed by using Benzene-1,3,5-tricarboxylic acid (BTC), 4,40,400-Benzene-1,3,5-triyltribenzoate (BTB) and 4,40,400-(benzene-1,3,5triyl-tris (benzene-4,1-diyl))tribenzoate (BBC) organic linkers. The geometries of the structures were optimized and lithium atoms were dispersed inside. Then, thirty-three different structures were derived. Finally, hydrogen storage capacities and surface areas of each structure were computed. It was found out that 160 lithium dispersed Graphene-BBC structure has the highest hydrogen storage capacity with 4.26 wt % at 298K and 100 bars while 70 lithium dispersed graphene-BTB structure store 9.81 wt % hydrogen at 77K and 4 bars, and lithium free graphene-BBC structure store 20,68 wt % hydrogen at 77K and 100 bars. Lithium dispersion enabled extra surfaces for Graphene-BTB and Graphene-BBC structures to the limits. But surface area of Graphene-BTC structure decreased with lithium dispersion. The number of limits for Graphene-BTB and Graphene-BBC named structures were 70 and 200 lithium atoms, respectively. At the final it is pointed out that constructed novel PGFs could store comparable and relatively high hydrogen in various conditions. The existence of lithium atoms played a minor role to enhance hydrogen storage capacity but the limits are critically important to reach maximum capacity. 相似文献
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E. Papanikolaou A.G. VenetsanosM. Schiavetti A. MarangonM. Carcassi N. Markatos 《International Journal of Hydrogen Energy》2011,36(3):2573-2581
Within the framework of the internal project HyQRA of the HYSAFE Network of Excellence (NoE), funded by the European Commission (EC), the participating partners were requested to apply their Quantitative Risk Assessment (QRA) methodologies on a predefined hypothetical gaseous H2 refuelling station named BBC (Benchmark Base Case). The overall aim of the HyQRA project was to perform an inter-comparison of the various QRA approaches and to identify the knowledge gaps on data and information needed in the QRA steps specifically related to H2. Partners NCSRD and UNIPI collaborated on a common QRA. UNIPI identified the hazards on site, selected the most critical ones, defined the events that could be the primary cause of an accident and provided to NCSRD the scenarios listed in risk order for the evaluation of the consequences. NCSRD performed the quantitative analysis using the ADREA-HF CFD code. The predicted risk assessment parameters (flammable H2 mass and volume time histories and maximum horizontal and vertical distances of the LFL from the source) were provided to UNIPI to analyze the consequences and to evaluate the risk and distances of damage. In total 15 scenarios were simulated. Five of them were H2 releases in confined ventilated spaces (inside the compression and the purification/drying buildings). The remaining 10 scenarios were releases in open/semi-confined spaces (in the storage cabinet, storage bank and refuelling hose of one dispenser). This paper presents the CFD methodology applied for the quantitative analysis of the common UNIPI/NCSRD QRA and discusses the results obtained from the performed calculations. 相似文献
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阐述了当前我国煤炭工业节能减排技术发展面临的形势和挑战,从七个方面对近年来煤炭工业节能减排技术研发、应用及推广现状进行了阐述和分析,有利于明确煤炭工业节能减排技术发展中存在的薄弱环节,找准技术发展的共性和重大关键技术攻关的方向.同时,对未来的发展战略和方向进行了有益的思考,提出了制定我国煤炭工业节能减排技术发展蓝图的一些建议,进一步促进我国煤炭工业节能减排技术快速发展. 相似文献
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碳捕捉与封存技术浅论 总被引:1,自引:0,他引:1
全球变暖已成为国际关注的问题,以全球气温变暖为背景介绍一种新的节能减排技术——二氧化碳捕捉与封存技术(CSS技术)。CCS技术是实现温室气体减排的重要途径之一,具有良好的发展前景,备受发达国家的重视和发展中国家的关注。论述有关二氧化碳捕捉与封存技术各个环节的进展和存在的问题,简要介绍了碳捕捉方面的新技术和CSS的工程应用。 相似文献