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浅谈液氧充装管路设计要注意的几个问题 总被引:1,自引:0,他引:1
简单介绍液氧充装的工艺过程,总结了液氧管路工艺设计时要注意的几处布管细节和安全措施;同时还介绍了如何布置氧气充装排和确定充装头的数目,对了解液氧充装过程和液氧充装设计会有所帮助. 相似文献
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主要介绍任何减少DCS-120石油液化气钢瓶充装电子秤的使用过程中充装枪头释液化石油气,在液化气钢瓶充装过程中,每充装一瓶液化石油气,气瓶充装枪头处约释放0.007kg液化石油气至泵房,由于是充装切换无法回收,导致这部分液化石油气只能通过风机强行排放至大气,释液的液化石油气对操作人员和对环境的造成危害。 相似文献
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为满足用户对液体四氧化二氮的需求,四川泸天化股份公司浓硝车间根据用户实际需求量和需求纯度,对现运行的5.7万t/a的浓硝酸合成装置进行液体四氧化二氮中间产品充装设计,并对在生产浓硝酸过程中液体四氧化二氮的充装进行了探索,最终解决了液体四氧化二氮充装过程中的浓硝酸生产平衡问题。 相似文献
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王士颖 《中国石油和化工标准与质量》2014,(10):19-19
随着国家对易燃易爆有毒有害液化气体充装系统的关注,逐步推广使用万向节管道充装系统代替金属软管充装系统。通过对两种充装系统的介绍及案例分析,阐明万向节管道充装系统的安全性和重要性。 相似文献
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气体充装属于危险化学品的生产过程,目前我国的充装行业以小、散、乱的形式存在,生产单位普遍有安全意识薄弱,安全措施不到位,建设不规范等现象。本文旨在对气体充装的生产过程中,从各个方面进行安全措施的建议,为企业的安全生产提供一些帮助。 相似文献
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分析了液氯钢瓶过量充装的危险性的原因,并根据液氯钢瓶的有关特性数据和计算液化气体温度升高后产生压力增大值的经验公式,对充满液氯的钢瓶受环境温度影响(从20℃上升到30℃时)发生爆炸瞬间所承受的内压力值进行了计算,从而得出:严格控制液氯钢瓶的充装系数是确保液氯钢瓶充装、贮存、运输及使用安全的关键。 相似文献
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SBR序列间歇式活性污泥法是一种按间歇曝气方式来运行的活性污泥污水处理技术。通过分析某天然气净化厂含硫检修污水中各种有毒有害物质对SBR反应池污泥性能影响因素的分析,为有效控制有毒有害物质的影响提供依据。针对不同的影响因素,首先在缓冲罐中采用曝气、调整pH、氧化除硫、絮凝沉降等方法对进入SBR污水系统的原水进行预处理,去除有毒有害物质,减少其对系统影响。结果表明,预处理及工艺调整技术,减少了含硫污水对SBR池活性污泥的冲击,污泥活性稳定,污水处理后外排指标达标率100%,保证了运行的正常进行,减小对环境的污染。 相似文献
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酸气回注工艺流程及安全风险研究 总被引:1,自引:0,他引:1
酸气回注技术具体工艺过程是将需要处理的酸气加压,然后输送到处理井并注入到预先选定的储层。此文介绍了酸气回注的工艺流程,包括回注的地层的选择、脱水方法、增压方式、输送管道以及注入井位置的确定。由于酸气中的硫化氢含有剧毒,此文还介绍了酸气回注过程中的安全风险问题,提出了相应的措施。 相似文献
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超重力技术在润滑油添加剂研发中的突出特性 总被引:1,自引:0,他引:1
以TBN400超高碱值环烷酸钙润滑油清净剂的合成过程为研究对象,从清净剂合成的工艺过程、技术经济性、环境友好性、工艺稳定性和产品的胶体结构等方面对比了超重力工艺和传统釜式法工艺的特点,考察了超重力技术在润滑油清净剂合成中的突出特性。结果表明,超重力工艺碳酸化反应时间缩短1倍以上,而且以低毒环保型溶剂90~120℃汽油为溶剂,回收率可以达到90%以上;产生的钙渣量大大降低,工艺的稳定性好;清净剂胶体结构中碳酸钙颗粒分布更均匀,粒径相对较小。 相似文献
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天然气作为绿色、高效的优质清洁能源,在我国能源结构中所占比例日益增加。因为天然气中含有一定量的有毒有害气体硫化氢,所以天然气在使用之前就需要脱除其中的硫化氢气体。生物脱硫是利用微生物脱除气体和废水中的含硫化合物,具有操作条件温和、能量消耗低、环境污染小、脱硫效率高、副产生物硫黄等优势。因此,天然气生物脱硫技术已成为天然气净化研究的热点之一。本文首先介绍了天然气中硫化氢气体的主要来源,回顾了工业上广泛应用的天然气脱硫技术(克劳斯法脱硫和络合铁法脱硫);随后阐述了生物脱硫的主要菌种以及脱硫机理,并重点介绍了天然气生物脱硫技术的典型工艺(Bio-SR脱硫和Shell-Paques脱硫)和新型工艺 (嗜盐嗜碱生物脱硫);最后指出了天然气生物脱硫技术的发展方向。 相似文献
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The absorption of methanol from a contact gas in the production of technical formalin has been considered. The model of a conventional process flow sheet for absorbing methanol from a contact gas has been constructed using computer-aided modeling. The empirical coefficients used in the NRTL and Lee–Kesler models were determined. The amount of methanol in the absorption gases utilized by combustion in a conventional process flow sheet has been determined. The amounts of emissions in the case of an additional condensation stage and experimental and calculated data on the process have been compared. A method for minimizing toxic emissions that enables one tom eliminate the environmental load and increase energy and resource conservation has been proposed. The operational conditions of an absorber at a 22% increase in capacity have been considered. 相似文献
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A dynamic analysis of a continuous stirred tank bioreactor with biofilm was performed. The existence of gas, liquid, and biofilm were taken into account. The proposed heterogeneous model of such bioreactor takes into account dynamic biofilm growth and interphase transfer of substrates and biomass for a double‐substrate aerobic process. Simulations were performed to investigate the influence of important process parameters, i.e., toxic substrate concentration in the feed stream, detachment rate coefficient, mean residence time of the liquid and aeration intensity, on dynamic properties of the bioreactor. Dynamic behavior at conditions of anoxia of microorganisms were shown. A method was proposed to reduce bioreactor start‐up time significantly. The paper presents a mathematical model of the bioreactor that uses a discrete model of biofilm growth based on the theory of cellular automata. Dynamics of the bioreactor based on the continuous and discrete biofilm model was compared. © 2016 American Institute of Chemical Engineers AIChE J, 63: 1818–1829, 2017 相似文献
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Simulation of mercury emission control by activated carbon under confined-bed operations 总被引:1,自引:0,他引:1
Mercury emissions from coal-fired power plants have been a great environmental and regulatory concern due to the toxic nature of mercury and the significant amount of emissions from these plants. An effective method for controlling mercury emission is to employ activated carbon to adsorb mercury from the combustion flue gas. In this study, an activated carbon mercury sorption model was applied to simulate a confined-bed mercury emission control process. Model simulations were performed to generate dynamic mercury concentration profiles and the corresponding profiles of mercury uptake by activated carbon at various bed locations under various process conditions. The simulation parameters included flue gas flow rate, inlet mercury concentration, and adsorption bed temperature. The study has demonstrated the applicability of the model for simulating the process and provided insights into the mercury control process especially the effects of flue gas flow rate, inlet mercury concentration, and activated carbon bed temperature on the process. Such information is critically needed in the design and operation of a mercury emission control process involving activated carbon adsorption. 相似文献