全文获取类型
收费全文 | 69篇 |
免费 | 7篇 |
国内免费 | 1篇 |
专业分类
综合类 | 5篇 |
化学工业 | 45篇 |
金属工艺 | 3篇 |
能源动力 | 2篇 |
轻工业 | 6篇 |
石油天然气 | 8篇 |
一般工业技术 | 5篇 |
冶金工业 | 2篇 |
自动化技术 | 1篇 |
出版年
2023年 | 1篇 |
2021年 | 1篇 |
2020年 | 1篇 |
2019年 | 2篇 |
2018年 | 2篇 |
2016年 | 4篇 |
2015年 | 5篇 |
2014年 | 5篇 |
2013年 | 8篇 |
2012年 | 10篇 |
2011年 | 4篇 |
2010年 | 3篇 |
2009年 | 1篇 |
2008年 | 1篇 |
2007年 | 3篇 |
2006年 | 2篇 |
2005年 | 4篇 |
2004年 | 3篇 |
2003年 | 2篇 |
2002年 | 4篇 |
2001年 | 2篇 |
1997年 | 3篇 |
1996年 | 2篇 |
1994年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1979年 | 1篇 |
排序方式: 共有77条查询结果,搜索用时 109 毫秒
71.
72.
73.
74.
Aqueous solutions of MDEA, MDEA + DEA and MDEA + MEA containing 4.2 kmol/m3 total amine, were contacted with CO2 at a partial pressure of 2.58 MPa and temperatures ranging from 120 to 180°C, in a stainless steel batch reactor. The reaction products include the known degradation compounds of the amines as well as products formed from secondary interactions in the amine blends. The rate of degradation was first order in the amines and, in magnitude, followed the sequence MDEA < MEA < DEA. Furthermore, the rate constant for MDEA was independent of amine substitution level and blend constituents. From a practical standpoint, MDEA + DEA blends would require frequent DEA make-up to maintain treating efficiency. 相似文献
75.
采用一乙醇胺(MEA)进行燃煤电厂烟气脱碳是目前比较成熟和可行的技术,但是存在再生能耗高的严重缺陷。胺法脱碳系统流程改进及优化能有效降低再生能耗。应用Aspen Plus软件基于速率模型对传统胺法脱碳流程及其改进流程进行模拟研究。这些改进的流程包括吸收塔中间冷却流程、富液分流流程、贫液蒸汽再压缩流程、分流流程及富液分流与贫液蒸汽再压缩整合流程。研究结果表明:富液分流与贫液蒸汽再压缩整合流程节能效果最好,和传统流程相比再生能耗及等量功分别下降28.2%和11.9%。节能效果其次的是富液分流流程,再生能耗和等量功分别下降19.3%和11.8%。贫液蒸汽再压缩流程使再生能耗下降了14.1%,而等量功只下降了4.1%。吸收塔中间冷却流程和分流流程节能效果比较有限。 相似文献
76.
Gongkui Xiao Penny Xiao Andrew Hoadley Paul Webley 《Frontiers of Chemical Science and Engineering》2021,15(3):483
This study explored the feasibility of integrating an adsorption and solvent scrubbing process for post-combustion CO2 capture from a coal-fired power plant. This integrated process has two stages: the first is a vacuum swing adsorption (VSA) process using activated carbon as the adsorbent, and the second stage is a solvent scrubber/stripper system using monoethanolamine (30 wt-%) as the solvent. The results showed that the adsorption process could enrich CO2 in the flue gas from 12 to 50 mol-% with a CO2 recovery of >90%, and the concentrated CO2 stream fed to the solvent scrubber had a significantly lower volumetric flowrate. The increased CO2 concentration and reduced feed flow to the absorption section resulted in significant reduction in the diameter of the solvent absorber, bringing the size of the absorber from uneconomically large to readily achievable domain. In addition, the VSA process could also remove most of the oxygen initially existed in the feed gas, alleviating the downstream corrosion and degradation problems in the absorption section. The findings in this work will reduce the technical risks associated with the state-of-the art solvent absorption technology for CO2 capture and thus accelerate the deployment of such technologies to reduce carbon emissions. 相似文献
77.
T. Narasimhaswamy S. C. Sumathi B. S. R. Reddy G. D. Devasagayam 《Polymer International》1992,27(1):75-80
Copolymerisation of phenyl methacrylate, 4-chlorophenyl acrylate, 4-nitrophenyl acrylate and 2,4,6-tribromophenyl acrylate with divinyl benzene was carried out in aqueous suspension medium at 80°C using benzoyl peroxide as radical initiator. The resulting beaded copolymers were characterised by FTIR. optical and scanning electron microscopy. Polymer analogue reactions of these particulate copolymers with monoethanolamine were carried out at 60.80 and 100°C in dimethyl sulphoxide as solvent. The progress of the reactions was followed by observing the disappearance of phenyl ester carbonyl absorption at 1750 cm−1 and the appearance of 1650cm−1 vibration corresponding to the characteristic amide carbonyl. The percentage conversions were calculated, and the effect of polar substituents in the phenyl acrylates as well as temperature on the reaction are discussed. 相似文献