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成型助剂对过量负载钠基吸附剂强度及CO_(2)吸附性能的影响 被引量:5
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作者 常鸣华 陈晓平 +5 位作者 蔡天意 刘威 许志康 刘道银 吴烨 马吉亮 《中国电机工程学报》 EI CSCD 北大核心 2021年第11期3683-3691,共9页
燃煤电厂CO_(2)大量排放引起的温室效应等环境问题日益加剧,因此对燃煤电厂CO_(2)捕集技术的研究有着重要意义。以γ-Al_(2)O_(3)为载体,采用过量浸渍法制备了粉状钠基吸附剂,在挤压滚圆成型过程中加入不同的成型助剂制成吸附剂颗粒。... 燃煤电厂CO_(2)大量排放引起的温室效应等环境问题日益加剧,因此对燃煤电厂CO_(2)捕集技术的研究有着重要意义。以γ-Al_(2)O_(3)为载体,采用过量浸渍法制备了粉状钠基吸附剂,在挤压滚圆成型过程中加入不同的成型助剂制成吸附剂颗粒。利用压力试验机和固定床反应器测定不同吸附剂颗粒抗压强度及CO_(2)吸附性能,结果显示:未添加助剂的吸附剂吸附性能较好,但成型后抗压强度较低;添加高铝水泥可以提升吸附剂颗粒的抗压强度并使其保持较高的Na_(2)CO_(3)转化率;添加微晶纤维素会使吸附剂颗粒的强度及吸附性能均下降;添加羧甲基纤维素钠可以提高吸附剂颗粒的吸附性能,但使其抗压强度降低明显。最终选出综合性能与经济型较好的制备方法,为钠基吸附剂的工业化制备与应用提供了理论指导。 展开更多
关键词 碳捕集 钠基吸附剂 挤压滚圆 抗压强度 CO_(2)吸附性能
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Pore Structure Heterogeneity of the Xiamaling Formation Shale Gas Reservoir in the Yanshan Area of China: Evaluation of Geological Controlling Factors 被引量:6
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作者 LI Xueyuan CHEN Shangbin +3 位作者 WANG Xiaoqi ZHU Yanming chang minghua Clementine UWAMAHORO 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2019年第3期588-603,共16页
Micro-heterogeneity is an integral parameter of the pore structure of shale gas reservoir and it forms an essential basis for setting and adjusting development parameters.In this study,scanning electron microscopy,hig... Micro-heterogeneity is an integral parameter of the pore structure of shale gas reservoir and it forms an essential basis for setting and adjusting development parameters.In this study,scanning electron microscopy,high-pressure mercury intrusion and low-temperature nitrogen adsorption experiments were used to qualitatively and quantitatively characterize the pore structure of black shale from the third member of the Xiamaling Formation in the Yanshan area.The pore heterogeneity was studied using fractal theory,and the controlling factors of pore development and heterogeneity were evaluated in combination with geochemical parameters,mineral composition,and geological evolution history.The results show that the pore structure of the reservoir was intricate and complicated.Moreover,various types of micro-nano scale pores such as dissolution pores,intergranular pores,interlayer pores,and micro-cracks are well developed in member 3 of the Xiamaling Formation.The average porosity was found to be 6.30%,and the mean value of the average pore size was 4.78 nm.Micropores and transition pores provided most of the storage space.Pore development was significantly affected by the region and was mainly related to the total organic carbon content,vitrinite reflectance and mineral composition.The fractal dimension,which characterizes the heterogeneity,is 2.66 on average,indicating that the pore structure is highly heterogeneous.Fractal dimension is positively correlated with maturity and clay mineral content,while it is negatively correlated with brittle mineral content and average pore size.These results indicate that pore heterogeneity is closely related to thermal history and material composition.Combined with the geological background of this area,it was found that the pore heterogeneity was mainly controlled by the Jurassic magmatism.The more intense the magma intrusion,the stronger the pore heterogeneity.The pore structure and its heterogeneity characteristics present today are a general reflection of the superimposed geological processes of sedimentary-diagenetic-late transformation.The influence of magmatic intrusion on the reservoir is the main geological factor that should be considered for detailed evaluation of the Xiamaling Formation shale gas reservoir in the Yanshan area. 展开更多
关键词 SHALE gas PORE structure HETEROGENEITY MAGMA INTRUSION Xiamaling Formation(Fm.) Yanshan area of China
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Epidemiological Investigation and Analysis of Chlamydia in Yak and Tibetan Sheep in Qinghai Province
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作者 Fu Yijuan Chao Yilin +1 位作者 chang minghua He Shengde 《Animal Husbandry and Feed Science》 CAS 2017年第3期168-169,共2页
Epidemiological investigation of chlamydia in yak and Tibetan sheep were conducted in Haiyan and Guinan counties, and samples were collected for laboratory detection, to understand the incidence range and damage degre... Epidemiological investigation of chlamydia in yak and Tibetan sheep were conducted in Haiyan and Guinan counties, and samples were collected for laboratory detection, to understand the incidence range and damage degree of chlamydia in yak and Tibetan sheep in Qinghai Province. The result will provide technical support for preparation of scientific prevention and control measures against Chlamydia in Qinghai Province. 展开更多
关键词 Epidemiological investigation CHLAMYDIA YAK Tibetan sheep
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