CO_(2)捕集、利用与封存(CO_(2)Capture, Utilization and Storage, CCUS)技术是减少碳排放的有效手段之一,是实现中国“双碳”目标的重要技术保障,其中CO_(2)管道输送是最重要的一环。从CCUS技术和CO_(2)管道设计两个维度综述了国内外C...CO_(2)捕集、利用与封存(CO_(2)Capture, Utilization and Storage, CCUS)技术是减少碳排放的有效手段之一,是实现中国“双碳”目标的重要技术保障,其中CO_(2)管道输送是最重要的一环。从CCUS技术和CO_(2)管道设计两个维度综述了国内外CO_(2)捕集、CO_(2)运输、CO_(2)封存和CO_(2)利用的研究进展,针对运输过程,着重从工艺设计、杂质、含水量、止裂控制和风险评估等方面梳理了CO_(2)管道设计的研究成果。中国目前正在大力推进CCUS技术,中国石油、中国石化和中国海洋石油等机构分别成立了相关的研究机构,聚焦CCUS发展的各个环节。虽然中国尚处于技术发展的初级阶段,但相信随着科研人员的努力会很快赶超发达国家,跻身第一方阵。研究结果旨在为中国的CCUS技术发展提供参考,促进中国CCUS技术的推广实施和CO_(2)管道的合理设计。展开更多
According to the study of the microstructure and properties of X100 pipeline steel, the welding consumable-wire based on Mn-Ni-Mo-B-Ti alloy system was successfully designed and developed. The yield strength of the de...According to the study of the microstructure and properties of X100 pipeline steel, the welding consumable-wire based on Mn-Ni-Mo-B-Ti alloy system was successfully designed and developed. The yield strength of the deposited metal of the developed welding wire was 695 MPa, the tensile strength was 810 MPa, and Charpy impact energy was 92 J at negative 20 ℃ when matching with BSG-SJ101H1 sintered flux. The results of the weldability test for X100 pipeline steel which adopting this developed wire showed that the tensile strength of the weld was 827 MPa, 185 J of Charpy impact energy（ -10 ℃ ） , 97% of section of shear and the weld had good strength and toughness matching when the welding speed got to 1.7 m/min. The microstructure and fracture appearance of the weld were analyzed by using metallographic microscope, scanning electron microscope （SEM） and laser confocal microscope, the results indicated that the microstructure was mainly granular bainite in the weld metal, and the fracture was dimple with 200 - 300 μm depth presenting a typical ductile fracture characteristics. The test of welding wire with different content of Ni and Cr element indicated that Ni was better than Cr in improving the strength and toughness of weld metal.展开更多
文摘CO_(2)捕集、利用与封存(CO_(2)Capture, Utilization and Storage, CCUS)技术是减少碳排放的有效手段之一,是实现中国“双碳”目标的重要技术保障,其中CO_(2)管道输送是最重要的一环。从CCUS技术和CO_(2)管道设计两个维度综述了国内外CO_(2)捕集、CO_(2)运输、CO_(2)封存和CO_(2)利用的研究进展,针对运输过程,着重从工艺设计、杂质、含水量、止裂控制和风险评估等方面梳理了CO_(2)管道设计的研究成果。中国目前正在大力推进CCUS技术,中国石油、中国石化和中国海洋石油等机构分别成立了相关的研究机构,聚焦CCUS发展的各个环节。虽然中国尚处于技术发展的初级阶段,但相信随着科研人员的努力会很快赶超发达国家,跻身第一方阵。研究结果旨在为中国的CCUS技术发展提供参考,促进中国CCUS技术的推广实施和CO_(2)管道的合理设计。
文摘According to the study of the microstructure and properties of X100 pipeline steel, the welding consumable-wire based on Mn-Ni-Mo-B-Ti alloy system was successfully designed and developed. The yield strength of the deposited metal of the developed welding wire was 695 MPa, the tensile strength was 810 MPa, and Charpy impact energy was 92 J at negative 20 ℃ when matching with BSG-SJ101H1 sintered flux. The results of the weldability test for X100 pipeline steel which adopting this developed wire showed that the tensile strength of the weld was 827 MPa, 185 J of Charpy impact energy（ -10 ℃ ） , 97% of section of shear and the weld had good strength and toughness matching when the welding speed got to 1.7 m/min. The microstructure and fracture appearance of the weld were analyzed by using metallographic microscope, scanning electron microscope （SEM） and laser confocal microscope, the results indicated that the microstructure was mainly granular bainite in the weld metal, and the fracture was dimple with 200 - 300 μm depth presenting a typical ductile fracture characteristics. The test of welding wire with different content of Ni and Cr element indicated that Ni was better than Cr in improving the strength and toughness of weld metal.
