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5A沸石分子筛低温变压吸附CO2/CH4实验研究 被引量:7
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作者 曾国治 王睿 +3 位作者 库尔 刘学武 邹久朋 陈淑花 《广州化工》 CAS 2019年第10期56-58,105,共4页
采用静态容积法测量5A沸石分子筛对CO2和CH4的单组份等温吸附曲线,采用低温变压测量不同实验参数对5A沸石分子筛分离CH4/CO2混合气体的能力影响。静态实验表明,CO2和CH4吸附量随温度的降低而上升,-30℃时CO2和CH4在吸附剂上的饱和吸附... 采用静态容积法测量5A沸石分子筛对CO2和CH4的单组份等温吸附曲线,采用低温变压测量不同实验参数对5A沸石分子筛分离CH4/CO2混合气体的能力影响。静态实验表明,CO2和CH4吸附量随温度的降低而上升,-30℃时CO2和CH4在吸附剂上的饱和吸附量最高:分别为4.94mmol/g和3.0mmol/g;动态试验表明,增加吸附压力会降低分离效果,减小混合气体分离系数;降低吸附温度有利于CH4/CO2分离,提高混合气体分离系数。 展开更多
关键词 5A沸石分子筛 静态容积法 低温变压 分离系数
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湖北随州五童庙碱性杂岩体低温高压变质机理研究
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作者 赵文俞 王勤燕 叶先贤 《电子显微学报》 CAS CSCD 2000年第4期527-528,共2页
关键词 碱性杂岩体 低温机理 质作用
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Deformation simulation of low-temperature high-speed extrusion for 6063 Al alloy 被引量:2
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作者 王孟君 何钊 +2 位作者 武星星 李彩文 李光耀 《Journal of Central South University》 SCIE EI CAS 2010年第5期881-887,共7页
The hot compression test of 6063 Al alloy was performed on a Gleeble-1500 thermo-simulation machine, and the forming of 6063 rod cxtrudate in low-temperature high-speed extrusion was simulated with extrusion ratio of ... The hot compression test of 6063 Al alloy was performed on a Gleeble-1500 thermo-simulation machine, and the forming of 6063 rod cxtrudate in low-temperature high-speed extrusion was simulated with extrusion ratio of 25 on the platform of DEFORM 2D successfully. From the compression experimental results, the flow stress model of this Al alloy is obtained which could be the constitutive equation in the simulation of low-temperature high-speed extrusion process. From the numerical simulation results, there is a higher strain concentration at the entrance of the die and the exit temperature reaches up to 522 ℃ in low-temperature high-speed extrusion, which approaches to the quenching temperature of the 6063 Al alloy. The results show that the low-temperature high-speed extrusion method as a promsing one can reduce energy consumption effectively. 展开更多
关键词 6063 Al alloy hot deformation low-temperature high-speed extrusion constitutive equation numerical simulation
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Water Vapor Detection System Based on Scanning Spectra
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作者 Shicong ZHANG Qiang WANG +10 位作者 Yan ZHANG Fujun SONG Kun CHEN Guoqing CHOU Jun CHANG Pengpeng WANG Delong KONG Zongliang WANG Weijie WANG Yongning LIU Haiyong SONG 《Photonic Sensors》 SCIE EI CAS 2012年第1期71-76,共6页
Scanning the absorption spectral line of water vapor through wavelength around 1368.597nm is successfully used to measure the value of micro-moisture content. The synchronous superposition average of original signal a... Scanning the absorption spectral line of water vapor through wavelength around 1368.597nm is successfully used to measure the value of micro-moisture content. The synchronous superposition average of original signal algorithm based on labview is innovated and applied to detecting weak spectrum absorption signal instead of low pass filter. Two data processing methods are used to get the concentration of water vapor in ppm: one is a general formula method which has newly deduced a general formula to calculate the concentration of gas with temperature and beam intensity ratio when the pressure is equal to or greater than 1 atm; the other is engineering calibration method which is proved to have high resolution and accuracy with the fitted curve of beam intensity ratio and concentration in ppm when the temperature changes form 258K to 305K and the pressure ranges from 1 atm to 5 atm. 展开更多
关键词 Water-vapor detection scanning spectra detecting under high gas pressure near-infrared absorption
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