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131.
油田企业生产工作具有点多、线长、面广、庞杂、易燃易爆、有毒有害、高温高压、连续作业等特点,安全生产管理难度相当大,若稍有不慎,就会酿成大的事故.因此,避免或减少重大事故的发生是油田企业安全文化建设的重要目标.20世纪90年代,随着HSE管理体系引入中国,国内油田企业相继建立了HSE管理制度,并把HSE安全管理体系作为企业安全文化建设的主要载体.但油田企业安全文化建设仍存在误区,完全文化建设体系亟需进一步完善. 相似文献
132.
Hoff SJ Bundy DS Nelson MA Zelle BC Jacobson LD Heber AJ Ni J Zhang Y Koziel JA Beasley DB 《Journal of the Air & Waste Management Association (1995)》2006,56(5):581-590
It is a common practice in the midwestern United States to raise swine in buildings with under-floor slurry storage systems designed to store manure for up to one year. These so-called "deep-pit" systems are a concentrated source for the emissions of ammonia (NH3), hydrogen sulfide (H2S), and odors. As part of a larger six-state research effort (U.S. Department of Agriculture-Initiative for Future Agriculture and Food Systems Project, "Aerial Pollutant Emissions from Confined Animal Buildings"), realtime NH3 and H2S with incremental odor emission data were collected for two annual slurry removal events. For this study, two 1000-head deep-pit swine finishing facilities in central Iowa were monitored with one-year storage of slurry maintained in a 2.4 m-deep concrete pit (or holding tank) below the animal-occupied zone. Results show that the H2S emission, measured during four independent slurry removal events over two years, increased by an average of 61.9 times relative to the before-removal H2S emission levels. This increase persisted during the agitation process of the slurry that on average occurred over an 8-hr time period. At the conclusion of slurry agitation, the H2S emission decreased by an average of 10.4 times the before-removal emission level. NH3 emission during agitation increased by an average of 4.6 times the before-removal emission level and increased by an average of 1.5 times the before-removal emission level after slurry removal was completed. Odor emission increased by a factor of 3.4 times the before-removal odor emission level and decreased after the slurry-removal event by a factor of 5.6 times the before-removal emission level. The results indicate that maintaining an adequate barn ventilation rate regardless of animal comfort demand is essential to keeping gas levels inside the barn below hazardous levels. 相似文献
133.
Aniline degradation by electrocatalytic oxidation 总被引:4,自引:0,他引:4
The degradation of aniline solution in alkaline medium of pH 11.0 by electrocatalytic oxidation has been studied using an electrochemical reactor containing a SnO2–Sb2O3–PtO anode and a Ti cathode, both of 54 cm2 area. Hydroxyl radicals (HO√) are produced at the anode, being tested with the trace catcher salicylic acid and phenol by spectrophotometery and high performance liquid chromatography. Intermediates dianiline, 4-anilino phenol and azobenzol were detected by gas chromatography–mass spectrometry. The existence of HO√ produced in the aniline degradation was assayed with scavenger tertiary butanol. The results showed that electrocatalytic oxidation is an effective process for the degradation of aniline. A general reaction pathway that accounts for aniline degradation to CO2 involving those intermediates is proposed. 相似文献
134.
应用文献[1]关于不同地貌类型及不同水保措施条件下黄河干支流中泥沙粒径分布的研究结果,可以对相应条件下的减沙效益进行有效的分析。利用文献[1]模型,本文不仅探讨了在给定地貌类型条件下各类水保措施实施前后流域汇入黄河干支流的泥沙总量的变化,而且还在扣除降雨变化的影响之后,预测了各类组合条件下非均匀泥沙中减沙效果最佳的粒径级和相应粒径级泥沙的减沙量,预测结果得到了黄河干支流各站所有实测资料的验证。文中还简要讨论了人类活动(主要是开矿)对减沙效益的影响。 相似文献
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为了探究 6061?T6 铝合金的冲击力学性能和在防护结构上的应用前景,采用实验与数值模拟相结合的方法开展分析研究。根据多组准静态压缩及冲击压缩实验数据,对 Johnson?Cook 本构模型的相应参数进行了拟合;再进行数值模拟分析,并把数值模拟的结果与实验结果对比分析。最终,得到了 6061?T6 铝合金在常温下的屈服强度、峰值应力等力学参数;拟合出了 6061?T6 铝合金 J?C 模型的相应参数;研究表明 6061?T6 铝合金是一种应变率敏感材料,其屈服强度、流动应力峰值随着应变率的提高而提高,同时材料对冲击荷载的能量吸收也越来越多;当应变率为 1 600 s-1 时,相对于准静态,其屈服强度和极限承载力分别提高了 30%、78%;数值模拟结果与实验结果吻合较好,表明拟合的 J?C 模型能够较好地表现出 6061?T6 铝合金在高应变率下的应力流动行为。研究成果可为 6061?T6 铝合金材料冲击动力学分析和在抗爆结构上的应用提供依据和参考,其在防护工程,防灾减灾工程领域上应用前景广阔。 相似文献
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The pyrolysis characteristics of six representative organic components of municipal solid waste (MSW) and their mixtures were studied in a specially designed thermogravimetric analysis apparatus with a maximum recorded heating rate of 864.8 degrees Cmin(-1). The pyrolysis behavior of individual components was described by the Avrami-Erofeev equation. The influence of final temperature on individual components was studied, and it was concluded that final temperature was a factor in reaction speed and intensity, but that it played only a limited role in determining the reaction mechanism. The interactions between different components were evaluated, and it was concluded that the interaction between homogeneous materials was minimal, whereas the interaction between polyethylene and biomass was significant. 相似文献
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