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钢铁冶金业是经济发展的支柱产业之一。本文对我国钢铁冶金业在环境污染方面存在的问题进行了整体性的深入分析,继而总结和指出其在环境方面存在的主要问题,最后在此基础上,提出积极采取新技术、控制环境污染、发展环保型产业的策略,为钢铁冶金的污染治理及环保提供具有实践性的参考建议。 相似文献
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随着冶金企业改革的深化和能源价格的不断上涨,变频技术在冶金企业中的大功率电力传动系统的应用已成为一种趋势。变频技术不仅提高机组自动化水平,还降低冶金成本和能耗。将主要结合冶金行业中的钢铁行业来探讨变频调速技术在冶金行业的应用上的优势与前景。 相似文献
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利用冶金专用传感器与计算机技术相结合,实现在线定量、直观地检测有色金属熔体中的氧含量、气体和温度。重点阐述了该技术的研究、开发及应用现状。 相似文献
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冶金级硅是生产多晶体硅的主要原料,而多晶硅主要用于太阳电池的制备。为了满足制备太阳电池的条件,需精炼冶金级硅以降低其中的杂质含量。熔剂精炼是一种相对能耗低,在杂质硼、磷去除方面具有一定优势的冶金级硅提纯技术,将熔剂精炼和酸浸处理结合起来的方法能进一步提高冶金级硅的提纯效果,对制备低成本太阳能级多晶硅具有重要影响。对目前熔剂精炼提纯冶金级硅的最新研究进展作了较为全面的阐述,详细介绍了国内外研究人员采用Ca-Si、Al-Si、Sn-Si、Cu-Si等熔剂体系精炼去除冶金级硅中杂质的方法、工艺及效果。采用熔剂精炼结合湿法处理提纯冶金级硅,通过调控析出成分,使得金属杂质或非金属杂质间形成易于在晶界处沉淀析出并溶于酸的化合物,实现熔剂精炼与湿法处理对杂质的强化析出及协同去除。最后对熔剂精炼结合湿法处理提纯冶金级硅进行了总结并对其发展做出展望。 相似文献
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“生态文明建设与能源生产消费革命”课题组 《中国工程科学》2015,17(9):91-97
能源是人类活动的物质基础,推动了人类文明的演进与社会的发展。化石能源消费为全球带来工业文明巨大进步的同时,也带来了环境问题加剧、气候变化显著、能源贫困突出、能源安全问题凸显等负面影响。我国以煤为主的高碳能源结构和能源消费总量持续快速增长,已成为国内包括大气、水、土壤等关系民生的重大领域环境质量恶化、生态失衡的根本原因之一。开启新的能源革命,实现能源生产、流通、消费等全过程的绿色低碳化,是解决环境和气候变化问题的关键,也是推动我国由工业文明向生态文明转变的基础。本文回顾了人类文明与能源革命的发展历史,从推动文明发展的角度出发,分析全球能源革命的总体趋势,并基于我国国情,提出了生态文明建设背景下,推动能源革命的途径与建议。 相似文献
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Since the 21st century, the transportation industry in China has achieved rapid growth with a significant increase in the transport capacity; however the development has also greatly impacted the energy saving & environmental conservation. This paper takes into account non-commercial vehicles such as private cars in the statistics of energy consumption and pollution of Chinese transportation system. This method extends on previous methods which solely include commercial vehicles in these statistics. Based on more comprehensive quantitative data, it reviews the progress in the energy saving and environmental conservation efforts by the Chinese transportation industry and points out that the rapid increase of energy consumption and pollution emission and the deterioration of traffic congestion are prominent problems in the development of the Chinese transport industry. The main reasons for theses problems include the unbalanced development of different transport modes, the irrational layout of integrated transport hubs, the inadequate law, regulations and standards, and the use of suboptimal technology. Based on these findings, this paper proposes several goals for the construction of a green transportation system in China including the establishment of a transportation management system, the improvement of transportation energy efficiency, the control of environmental pollution and the alleviating of urban traffic congestion. Additionally, it points out that in order to build a green transportation system in China, multiple aspects should be enhanced, i.e., the formulation of traffic planning, the optimization of transport structure, the development of urban public transport, improvement of integrated hubs, administration of energy saving and environmental conservation, development of intelligent transportation systems, technical innovations, etc.. 相似文献
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燃气空调--21世纪的住宅空调 总被引:14,自引:1,他引:13
中国住宅空调的需求量已居世界的首位,且将不断增长。目前,中国住宅空调以电力房间空调器为主,住宅空调间断性负荷是拉大中国电力峰谷差的最重要原因之一,单一发展电力空调器将危害电力工业发展,使中国经济不堪重负。21世纪初,天然气在中国能源结构中所占的比重将大幅提高,发展住宅燃气空调对平衡城市的能源结构、提高能源使用效率、促进环境保护具有现实而长远的意义。本文论述了燃气空调应用于住宅的必要性及两个重要应用途径:户式燃气空调和楼宇冷热电联产系统。 相似文献
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Heavy metal removal from copper smelting effluent using electrochemical cylindrical flow reactor 总被引:5,自引:0,他引:5
Ahmed Basha C Bhadrinarayana NS Anantharaman N Meera Sheriffa Begum KM 《Journal of hazardous materials》2008,152(1):71-78
The purpose of this study is mainly to evaluate the performance of the continuous recirculation flow cell at low current density and pH (the pH at which the effluents are available) in removing heavy metals from copper smelting effluent by cathodic reduction. During the electrolysis at different pH, % removal of heavy metals removal, energy consumption and heterogeneous reaction rate constants were investigated at given flow rate and current density on the selected industrial effluent. The overall specific energy consumption at the pH 0.64 was observed to be lowest, which is 10.99kWh/kg of heavy metal removal. 相似文献
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Yiwen Ren Shaolong Li Zepeng Lv Yong Fan Jilin He Jianxun Song 《Small (Weinheim an der Bergstrasse, Germany)》2023,19(23):2207863
The application of carbides in catalysis, batteries, aerospace fields, etc. has been continuously expanded and deepened, which is attributed to the diversified physicochemical properties of carbides via a tune-up of their morphology, composition, and microstructure. The emergence of MAX phases and high entropy carbides with unparalleled application potential undoubtedly further stimulates the research upsurge of carbides. The traditional pyrometallurgical or hydrometallurgical synthesis of carbides inevitably faces the shortcomings of complex process, unacceptable energy consumption, extreme environmental pollution, and beyond. The molten salt electrolysis synthesis method with the superiorities of straightforward route, high efficiency, and environmental friendliness has demonstrated its validity in the synthesis of various carbides, which naturally initiates more research. In particular, the process can achieve CO2 capture while synthesizing carbides based on the excellent CO2 capture capability of some molten salts, which is of great significance for carbon neutralization. In this paper, the synthesis mechanism of carbide by molten salt electrolysis, the process of CO2 capture and carbides conversion, the latest research progress in the synthesis of binary, ternary, multi-component, and composite carbides are reviewed. Finally, the challenges, development perspectives, and research directions of electrolysis synthesis of carbides in molten salts are featured. 相似文献
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近年来,我国中东部地区饱受雾霾天气的危害。雾霾天气的形成有两方面原因,一是自然原因,二是人为原因。人为原因又是造成雾霾的主要原因,石化行业作为国民支柱产业,又是高能耗高污染的重工企业,它们对于环境问题的产生与治理有着无法推卸的社会责任。本文通过对雾霾天气形成原因与石化产业相关性的探究,对于雾霾天气的解决提出可行性措施建议。 相似文献
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"十二五"以来,我国煤电大气污染物的控制取得了很大的成就,烟尘、二氧化硫、氮氧化物排放总量和强度快速下降,控制水平达到世界先进水平。"十三五"乃至更长时期,煤电仍将承担国家大气污染物减排的重任。重点研发高性能、高可靠性、高适用性、高经济性污染物的控制技术、资源化技术、多污染物协同控制技术是未来我国煤电大气污染物控制的主要技术方向。预计到2020年,烟尘、二氧化硫、氮氧化物年排放量分别降至2×10~5~3×10~5 t、1×10~6~1.5×10~6 t、1×10~6~1.5×10~6 t。 相似文献