共查询到18条相似文献,搜索用时 93 毫秒
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加工含硫原油油品储罐存在严重腐蚀问题.油罐的腐蚀主要为氩的浓差腐蚀、H2S引起的腐蚀和细菌腐蚀;加强设备管理、采用电化学保护、涂料和罐内表面喷铝等是其主要防护措施. 相似文献
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浅谈原油储罐腐蚀与防护 总被引:1,自引:0,他引:1
本文介绍原油储罐腐蚀的基本情况.根据储罐腐蚀情况调查,简单分析了储罐腐蚀的原因、腐蚀机理,同时介绍了原油储罐的防护方法及储罐防护施工时的注意事项. 相似文献
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由于原油劣质化(主要是高台硫量)日益严重,针对某石化企业原装置陈旧,设备及管道腐蚀严重,分析了原油加工防腐蚀改造的安全洼,提出了行之有效的解决方案。 相似文献
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在工业生产中水作为冷却介质得到了广泛的应用,但由于水中所含杂质复杂,在循环使用过程中会对设备带来腐蚀等影响,为此有必要对循环水进行处理,来满足生产需要。本文主要阐述冷却水重金属的腐蚀类型以及冷却水系统腐蚀控制问题。 相似文献
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本文概述油罐罐底的腐蚀情况,分析腐蚀机理,并在此基础上提出罐底板阴极保护方法,介绍罐底外侧阴极保护系统的性能及安装方法. 相似文献
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三次采油技术的研究现状 总被引:2,自引:0,他引:2
本文主要介绍了三次采油技术产生的背景,现有的主要驱油方法及其驱油机理,总结了各类三次驱油中主要的驱油剂,并对未来的三次采油技术发展趋势和亟待解决的问题进行了展望. 相似文献
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硫磺回收装置的腐蚀是炼油企业面临的普遍性问题,通过分析硫磺回收过程腐蚀介质的来源及腐蚀机理和硫磺回收装置实在际生产中存在的设备腐蚀问题,并根据不同的腐蚀机理进行了腐蚀分类,剖析了腐蚀对装置造成主要危害,并提出了设备选材和工艺防护等有针对性的防腐蚀技术措施。 相似文献
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Gabriella Phiri Peter Mumba Agnes Mangwera 《International Journal of Consumer Studies》2006,30(6):527-532
A survey was conducted in Lilongwe city urban markets in Malawi, to assess the quality of cooking oil used for frying potato chips. Purposive sampling was performed to come up with respondents who were using vegetable oils. A stratified random sampling was used to select the 32 informal food processors who were interviewed using a structured questionnaire. Oil samples were collected from the most commonly used brand of oil. Fifteen respondents were selected and these were divided into three categories of five: those who were not reusing the oil, those who were reusing the oil and those who were preparing potato chips and chicken in the same oil, for chemical analysis. The preliminary results showed that while the majority (59.4%) of the informal food processors discarded the oil after 1 day, 3.1% discarded it after 4 days and another 12.5% after 3 days. A larger proportion of the respondents (40.6%) used the leftover oils at home, 37.5% kept it in oil bottles, 3.1% kept it in plastic papers for reuse the following day. Also, most respondents (57%) indicated dark colour as the sign of oil deterioration, 29% discarded the oil after noticing foam formation while 8.2% and 6.1% said they discarded the oil after noticing a bad smell and food absorbing the oils respectively. A physical observation of the various oils showed that for most of the respondents (34%), the oils were dark brown in colour, in 22%, the oils were slightly dark brown and 16%, the oils were brown. Foam formation was noticed in 13% of the respondents. It was also noted that 91% of the respondents had not been trained or briefed of food quality and safety issues. A chemical analysis of the oils showed high values of free fatty acids (range, 0.84–1.4112 compared with 0.42 in the fresh oil) and peroxide values (range 14.7–16.6 compared with 9.0 in the fresh oil). It may be concluded that the oils being used by the informal food processors in Malawi are of poor quality and so the foods cooked in them may be a health hazard to the consumers and the processors themselves. Although this work in ongoing, it may be recommended at the outset that the health department of the city assemblies should inspect these oils for the good health of the consumers. 相似文献
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以废动植物油为原料,研究了在自制DYD催化剂作用下,生产生物柴油的原理和方法、最佳生产工艺、分析方法、产品质量以及在柴油机上的试验情况,在最佳工艺条件下,转化率达到97%以上。测试结果表明,所生产的生物柴油,其各项性能指标都达到美国同类产品的标准(D6751.03a),在动力性、经济性基本不变的情况下,其环保性能指标明显改善,完全能在柴油机上广泛应用。 相似文献
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本文通过对近年煤焦油行业现状及近年价格波动情况进行了深层次分析,指出影响煤焦油价格涨跌的几大重要因素,并提出了一些有利于煤焦油产业有序健康发展的可行性建议. 相似文献