共查询到20条相似文献,搜索用时 46 毫秒
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纵观欧洲和北美地区控制柴油机NOx和PM的技术历程,微粒捕集器开始是可以避开的,但最终使用却无法避免。针对中国国情,使用微粒捕集器面临的最大问题是中国燃油高含硫量,燃油催化剂捕集器呈现出的高抗硫特征证明其将是一种可以采用的降低柴油机微粒排放的较好选择装置。 相似文献
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本文根据柴油机主要污染物生成机理,结合目前我国柴油机排气控制现状,介绍了贵州黄帝ART型柴油车排气后处理装置的组成构造及其排气后处理的工作原理,对ART型柴油车排气后处理装置改造在用柴油车污染物排放控制效果进行分析,最后指导改造安装步骤,并提出维护保养建议. 相似文献
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两相混输管道技术探讨 总被引:1,自引:0,他引:1
近年来两相混输管道技术有较大的发展,本文结合作者进行的研究工作,探讨了两相混输技术的发展,其中包括两相混输工艺计算,段塞及段塞捕集器,水化物,两相混凝管线的内腐蚀及防腐。 相似文献
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本文围绕胺法捕集石灰窑烟气中二氧化碳(CO2)的工艺进行深入探讨。首先概述二氧化碳排放对环境的影响,强调控制温室气体排放的重要性。随后,详细介绍胺法捕集CO2的原理及其在石灰窑烟气处理中的应用,包括不同胺液如哌嗪、MEA(脱硫脱碳)/MDEA(聚氨酯扩链剂)和DGEA(双酚基蒽酮二缩水醚)的性能比较,以及烟气的降温除尘、脱硫脱硝和CO2的吸收解吸过程。本文还分析了实际运行中遇到的挑战,如材料腐蚀、再生加热器泄漏等问题,并提出相应的解决方案。本研究对优化石灰窑烟气中CO2的捕集工艺、提高环境治理效率具有重要意义。 相似文献
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2012年3月27日,2012亚洲柴油车排放论坛暨添蓝论坛在北京王府半岛酒店举行,与会代表商讨柴油车减排和节能话题。2012亚洲柴油车排放暨添蓝论坛将提供道路及非道路柴油机动车和柴油发动机制造商中国最新的法规以及技术发展讯息。参会代表共同讨论延迟到明年的国四标准执行及油品挑战、北京市国五重型柴油机的地方排放标准和执行、以及可能的国六标准要件等热点话题。亚洲柴油车排放论坛暨添蓝论坛已举办五届,论坛持续讨论中国排放情况及发展,并聚集国外专家和制造厂商为国内排放论坛出谋划策。 相似文献
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不同坡度下柴油车比例对隧道通风需风量计算指标的影响 总被引:6,自引:1,他引:6
文章针对隧道通风需风量的两种计算指标烟雾浓度指标和CO浓度指标,论述了不同坡度下的柴油车比例对于指标选取的影响,提出了无量纲需风量和临界柴油车比例的概念,研究分析了在设计工况、怠速工况、阻塞工况三种情况下坡度对无量纲需风量和临界柴油车比例的影响,得出需风量计算指标随行车速度、坡度和柴油车比例的变化规律. 相似文献
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某厂重油催化裂化装置轻柴油换热器管束使用5年后发生严重腐蚀,管束外壁腐蚀严重,多处腐蚀穿孔。通过调查分析,原因是轻柴油中含有少量H2S、HCl和H2O,形成了HCl-H2S-H2O腐蚀环境,特别是低温部由于有液态水存在,腐蚀严重。通过多个方案对比,提出了采用碳钢管束渗铝技术,即节约制造费用,又提高了管束抗腐蚀性能,延长了设备运行周期。 相似文献
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对格拉管线试输-10号轻柴油实践的基本情况、主要做法、存在问题进行了总结回顾,并从试输成功经验的理性思考中提出几点启示性意见.对今后试输其他低标号轻柴油有借鉴价值. 相似文献
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In order to explore the influence of different factors on the emissions of heavy diesel vehicles, a chassis dynamometer was used to test and analyze a Euro VI standard heavy-duty diesel vehicle under different load, fuel, driving conditions, and resistance conditions. The full load condition was found to increase NOx emissions by about 0.107 g/km (30%) and the particulate matter (PM) by 0.003 g/km (18%) compared to the empty load condition. Compared with the China V diesel, the NOx emissions of the Beijing VI diesel were reduced by 0.065 g/km (18%), and PM decreased by 0.004 g/km (25%). The HC, CO, PM, and NOx emissions measured during the Chinese World Harmonized Transient Cycle (C-WHTC) were 0.002 g/km (27%), 0.0005 g/km (14%), 0.0024 g/km (15%), and 0.092 g/km (25%) higher, respectively, than those measured during the European Transient Cycle (ETC). The HC, CO, PM, and NOx emissions measured by using the test resistance were 0.002 g/km (28%), 0.001 g/km (25%), 0.003 g/km (18.7%), and 0.09 g/km (25.7%) higher, respectively, than those calculated with the recommended formula. 相似文献
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Increasingly strict emissions standards are providing a major impetus to vehicle manufactures for developing advanced powertrain and after-treatment systems that can significantly reduce real driving emissions. The knowledge of the gaseous emissions from diesel engines under steady-state operation and under transient operation provides substantial information to analyze real driving emissions of diesel vehicles. While there are noteworthy advances in the assessment of road vehicle emissions from real driving and laboratory measurements, detailed information on real driving gaseous emissions are required in order to predict effectively the real-time gaseous emissions from a diesel vehicle under realistic driving conditions. In this work, experiments were performed to characterize the behavior of NOx, unburned HC, CO, and CO2 emitted from light-duty diesel vehicles that comply with Euro 6 emissions standards. The driving route fully reflected various real-world driving conditions such as urban, rural, and highway. The real-time emission measurements were conducted with a Portable Emissions Measurement System (PEMS) including a Global Positioning System (GPS). To investigate the gaseous emission characteristics, authors determined the road load coefficients of vehicle specific power (VSP) and regression coefficient between fuel use rate and VSP. Furthermore, this work revealed the correlation between the rates of average fuel use and each gaseous emission. 相似文献
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内河船用柴油机在工作时,其燃油经济性能、动力性能和环境性能直接受到冷却系统性能的好坏的限制。本文对内河船用柴油机冷却水系统节能进行了探讨,提出了对冷却水温度进行恒温控制必将成为冷却水系统设计的重点。 相似文献