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| 1 | 3种典型工业固废的CO_(2)矿化封存性能显示文摘选择3种典型的工业固体废物-电石渣(CS)、钢渣(SS)和煤气化粉煤灰(FA),比较研究此3种固废在干法和湿法直接碳酸化工艺下的CO_(2)封存性能。结合热重(TG)、X射线衍射(XRD)等分析表征方法,揭示了3种固废的碳酸化反应规律及干法、湿法直接碳酸化的反应机理。结果表明:干法固碳中,CS、SS-1、FA、SS-2矿化封存CO_(2)能力依次降低,CO_(2)封存量分别为382.21、70.78、34.81和25.99 g·kg^(−1);湿法固碳中,CS、SS-1、SS-2的CO_(2)封存量均高于干法固碳,分别为613.4、191.9和106.8 g·kg^(−1),而FA的CO_(2)封存量下降为8.4 g·kg^(−1)。CaO含量是影响CO_(2)封存量的关键因素,其他含钙的物相与矿化反应相关。固废湿法固碳性能一般优于干法,湿法碳酸化过程中,CO_(2)溶于水形成碳酸根离子后,更易与固废中溶出的钙镁离子反应;而FA中非晶态钙成分在去离子水中不易溶出,湿法固碳性能较差,但其在高温下不稳定,在干法高温环境中能与CO_(2)发生反应生成CaCO_(3),其干法固碳性能优于湿法。 | 张亚朋 崔龙鹏 刘艳芳 李红伟 王志强 郎子轩 | 2021 | 环境工程学报2021，15，7： | 21 |
| 2 | 基于大气氧气及二氧化碳相关性分析的地质封存二氧化碳泄漏(英文)显示文摘The paper describes a method for monitoring CO2 leakage in geological carbon dioxide sequestration. A real time monitoring parameter, apparent leakage flux(ALF), is presented to monitor abnormal CO2 leakage, which can be calculated by atmospheric CO2 and O2 data. The computation shows that all ALF values are close to zero-line without the leakage. With a step change or linear perturbation of concentration to the initial CO2 concentration data with no leakage, ALF will deviate from background line. Perturbation tests prove that ALF method is sensitive to linear perturbation but insensitive to step change of concentration. An improved method is proposed based on real time analysis of surplus CO2 concentration in least square regression process, called apparent leakage flux from surplus analysis(ALFs), which is sensitive to both step perturbation and linear perturbations of concentration. ALF is capable of detecting concentration increase when the leakage occurs while ALFs is useful in all periods of leakage. Both ALF and ALFs are potential approaches to monitor CO2 leakage in geosequestration project. | 马登龙 邓建强 张早校 | 2014 | Chinese Journal of Chemical Engineering2014，22，6： | 3 |
| 3 | Enhancement of CO_(2) capture and microstructure evolution of the spent calcium-based sorbent by the self-reactivation process显示文摘The effect of self-reactivation on the CO_(2) capture capacity of the spent calcium based sorbent was investigated in a dual-fixed bed reactor.The sampled sorbents from the dual-fixed bed reactor were sent for XRD,SEM and N_2 adsorption analysis to explain the self-reactivation mechanism.The results show that the CaO in the spent sorbent discharged from the calciner absorbs the vapor in the air to form Ca(OH)_(2) and further Ca(OH)_(2)·2 H_(2) O under environmental conditions,during which process the CO_(2) capture capacity of the spent sorbent can be self-reactivated.The microstructure of the spent sorbent is improved by the self-reactivation process,resulting in more porous microstructure,higher BET surface area and pore volume.Compared with the calcined spent sorbent that has experienced 20 cycles,the pore volume and BET surface area are increased by 6.69 times and 56.3% after self-reactivation when φ=170%.The improved microstructure makes it easier for the CO_(2) diffusion and carbonation reaction in the sorbent.Therefore,the CO_(2) capture capacity of the spent sorbent is enhanced by self-reactivation process.A self-reactivation process coupled with calcium looping process was proposed to reuse the discharged spent calcium based sorbent from the calciner.Higher average carbonation conversion and CO_(2) capture efficiency can be achieved when self-reactivated spent sorbent is used as supplementary sorbent in the calciner rather than fresh CaCO_(3) under the same conditions. | Rongyue Sun Hongliang Zhu Rui Xiao | 2021 | Chinese Journal of Chemical Engineering2021，34，1： | 2 |
| 4 | 一个用于分离过程模拟的雷诺质流模型:Ⅱ.在填料床吸附过程中的应用(英文)显示文摘Simulations of adsorption process using the Reynolds mass flux model described in Part I of these serial articles are presented. The object of the simulation is the methylene chloride adsorption in a packed column(0.041 m id,packed with spherical activated carbon up to a length of 0.2 m). With the Reynolds mass flux model,breakthrough/regeneration curves, concentration and temperature as well as the velocity distributions can be obtained. The simulated results are compared with the experimental data reported in the literature and satisfactory agreement is found both in breakthrough/regeneration curves and temperature curves. Moreover,the anisotropic turbulent mass diffusion is characterized and discussed. | 李文彬 余国琮 袁希钢 刘伯潭 | 2015 | Chinese Journal of Chemical Engineering2015，23，8： | 1 |
| 5 | 共沸混合物(R290/CO_2)跨临界动力循环性能分析(英文)显示文摘Low critical temperature limits the application of CO_2 trans-critical power cycle.The binary mixture of R290/CO_2has higher critical temperature.Using mixture fluid may solve the problem that subcritical CO_2 is hardly condensed by conventional cooling water.In this article,theoretical analysis is executed to study the performance of the zeotropic mixture for trans-critical power cycle using low-grade liquid heat source with temperature of200℃.The results indicated that the problem that CO_2 can't be condensed in power cycle by conventional cooling water can be solved by mixing R290 to CO_2.Variation trend of outlet temperature of thermal oil in supercritical heater with heating pressure is determined by the composition of the mixture fluid.Gliding temperature causes the maximum outlet temperature of cooling water with the increase of mass fraction of R290.There are the maximum values for cycle thermal efficiency and net power output with the increase of supercritical heating pressure. | 潘利生 魏小林 史维秀 | 2015 | Chinese Journal of Chemical Engineering2015，23，3： | 1 |
| 6 | CO_(2) capture by double metal modified CaO-based sorbents from pyrolysis gases显示文摘High-temperature pyrolysis technology can effectively solve the problem of municipal solid waste pollution.However,the pyrolysis gas contains a large amount of CO_(2),which would adversely affect the subsequent utilization.To address this problem,a novel method of co-precipitation modification with Ca,Mg and Zr metals was proposed to improve the CO_(2)capture performance.X-ray diffraction(XRD)patterns and energy dispersive X-ray spectroscopy analysis showed that the two inert supports MgO and CaZrO_(3)were uniformly distributed in the modified calcium-based sorbents.In addition,the XRD results indicated that CaZrO_(3)was produced by the reaction of ZrO_(2)and CaO at high temperatures.The effects of doping ratios,adsorption temperature,calcination temperature,CO_(2)concentration and calcination atmosphere on the adsorption capacity and cycle stability of the modified calcium-based sorbent were studied.The modified calcium-based sorbent achieved the best CO_(2)capture performance when the doping ratio was 10:1:1 with carbonation at 700℃ under 20%CO_(2)/80%N_(2)atmosphere and calcination at 900℃ under100%N_(2)atmosphere.After ten cycles,the average carbonation conversion rate of Ca-10 sorbent was 72%.Finally,the modified calcium-based sorbents successfully reduced the CO_(2)concentration of the pyrolysis gas from 37%to 5%. | Xiaobin Chen Yuting Tang Chuncheng Ke Chaoyue Zhang Sichun Ding Xiaoqian Ma | 2022 | Chinese Journal of Chemical Engineering2022，35，3： | 0 |
| 7 | Calcium looping heat storage performance and mechanical property of CaO-based pellets under fluidization显示文摘The CaO-based pellets were fabricated using extrusion-spheronization method for calcium looping thermochemical heat storage under the fluidization.The effects of adhesive,biomass-based pore-forming agent,binder and particle size on the heat storage performance and mechanical property of the CaObased pellets were investigated in a bubbling fluidized bed reactor.The addition of 2%(mass)polyvinylpyrrolidone as an adhesive not only helps granulate,but also improves the heat storage capacity of the pellets.All biomass-templated CaO-based pellets display higher heat storage capacity than biomass-free pellets,indicating that the biomass-based pore-forming agent is beneficial for heat storage under the fluidization.Especially,bagasse-templated pellets show the highest heat storage conversion of 0.61 after 10 cycles.Moreover,Al_(2)O_(3)as a binder for the pellets helps obtain high mechanical strength.The CaO-based pellets doped with 10%(mass)bagasse and 5%(mass)Al_(2)O_(3)reach the highest heat storage density of 1621 kJ·kg^(-1) after 30 cycles and the highest crushing strength of 4.98 N.The microstructure of the bagasse-templated pellets appears more porous than that of biomass-free pellets.The bagassetemplated CaO-based pellets doped with Al_(2)O_(3)seem promising for thermochemical heat storage under the fluidization,owing to the enhanced heat storage capacity,excellent mechanical strength,and simplicity of the synthesis procedure. | Zhangke Ma Yingjie Li Boyu Li Zeyan Wang Tao Wang Wentao Lei | 2021 | Chinese Journal of Chemical Engineering2021，34，8： | 0 |
| 8 | 彩电机芯、集成电路和型号大对照显示文摘 | | 2000 | 电子科技2000，13，4： | 0 |
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