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根据GB50341-2003《立式圆筒形钢制焊接油罐设计规范》标准,用实例说明微内压立式拱顶储罐的锚栓设计。 相似文献
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在立式圆筒形钢制焊接油罐中,为了满足工艺要求和检修清扫的方便,常需设置齐平型清扫孔。SH6007-1999((石油化工储运系统罐区设计规范》第3.1.1条规定原油罐宜设清扫孔。但在SH3046-1992《石油化工立式筒形钢制焊接储罐设计规范》。中,对清扫孔的结构设计和热处理没有较详细的规定和要求, 相似文献
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本文比较了GB 50160-2008《石油化工企业设计防火规范》、SH/T 3007-2014《石油化工储运系统罐区设计规范》和API 2000-1998《Venting Atmospheric and Low-Pressure Storage Tanks Non-refrigerated and Refrigerated》中关于储罐正常呼吸以及事故泄压装置的规范要求,比较了API 650-2007《welded Steel Tanks for Oil Storage》和GB 50341-2014《立式圆筒形钢制焊接油罐设计规范》的弱顶结构设计条件。 相似文献
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油田含油污水的粗粒化除油 总被引:1,自引:0,他引:1
注水采油过程中产生大量的含油污水,不仅数量大,而且含油量和乳化程度也较高。大庆油田含油污水一般含油量为1000~2000ppm,最高可达5000ppm。用《静止浮升法》测定,油珠粒径大于100微米者仅占含量的1/3,其余均小于100微米,其中小于10微米者达10%。目前油田含油污水处理,通常采用除油、过滤两段流程。除油是处理流程中重要环节,如何提高除油效率是一个重要研究课题。油田上普遍使用的除油构筑物,是立式普通除 相似文献
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南卓 《硫磷设计与粉体工程》2019,(2)
针对2014版《立式圆筒形钢制焊接油罐设计规范》,介绍了新版标准修订的主要内容,并指出在工程设计使用中需注意的问题。同时对比2003版,总结出新旧标准关于油罐设计参数计算存在的差异,供设计者参考。 相似文献
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随着油田逐渐进入开采后期,原油含水率越来越高,污水处理愈发重要,集输系统处理污水量也越来越大,在运行过程中污水除油罐面临着高液位运行等不安全因素。本文以新疆油田重油开发公司61#原油处理站的污水除油罐为例,对其工艺的不合理性和存在的安全隐患进行分析,并研究方案解决问题,保证了生产的平稳和安全。 相似文献
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原油脱水站油水分离效果的影响因素和改善措施 总被引:2,自引:0,他引:2
针对近年来大庆油田部分原油脱水站存在的问题,研究了影响原油脱水站油水分离效果的主要因素,提出了改进破乳剂的性能和投加机制,降低游离水脱除器进液中机械杂质含量等提高原油脱水站油水分离效果的改善措施。对采出液处理中应用的破乳剂配方及其加药点设置,沉降罐上部污油回收处理工艺进行了改进。在实际应用中显著改善了大庆油田采出液的油水分离效果,电脱水器运行稳定性显著提高,出矿净化原油水含量低于0.3%的控制指标,沉降罐上部油层厚度可控制在0.3m以下,聚驱沉降罐和水驱沉降罐放水含油量可分别降低到500mg/L和300mg/L的控制指标以下。 相似文献
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P. Juliano P. Swiergon R. Mawson K. Knoerzer M. A. Augustin 《Journal of the American Oil Chemists' Society》2013,90(4):579-588
This work investigated whether ultrasound treatment could improve the oil recovery from the extract obtained from pressed oil palm mesocarp. Oil recoverable after subjecting two process streams from palm oil milling operations to ultrasound were compared to that obtained from corresponding samples without ultrasound treatment. The process streams examined were (i) the ex-screw press feed into the vertical clarification tank and (ii) the underflow sludge from the clarification tank. Oil recoverable was taken as the sum of decantable oil obtained after a gravity settling process at 85 °C for 1 h (skimmed oil) and oil released from the remaining colloidal dispersion after centrifugation at 1,000 g (centrifuged oil). Oil recoverable was dependent on the ultrasound treatment applied, type of transducer used and the feed stream. Increased recoverable oil was obtained by applying low frequency ultrasound (20 kHz) to the ex-screw press feed using a long rod radial sonotrode system but recoverable oil was decreased when a short single step cascade focused sonotrode system was used. High frequency ultrasound (400 + 1,600 kHz) increased recoverable oil from both process streams. Applying sequential low and high frequency ultrasound increased recoverable oil from the ex-screw press feed but decreased that from the underflow sludge. The use of high frequency ultrasound for improving oil recovery is a significant advance for palm oil milling operations. 相似文献
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某小型餐饮废水采用平流式隔油池工艺进行处理,其出水水质远不能达到GB/T 31962—2015《污水排入城镇下水道水质标准》中的A级标准。本次改扩建采用平流式隔油池-T型连通管-滤池的处理工艺。运行结果表明,各项指标的去除率均得到较大改善,BOD5由18.8%提高至73.3%,CODCr由38.0%提高至87.3%,SS由50.8%提高至84.5%,动植物油由63.5%提高至97.9%,总氮由14.2%提高至91.1%。在仅采用物理处理工艺的条件下,出水水质中除CODCr一项指标略微超标外,其余指标均达到GB/T 31962—2015中的A级标准要求。 相似文献
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Dispersed oil was separated from oil–water emulsions in an electroflotation cell equipped with insoluble electrodes: titanium coated with ruthenium oxide as anode and stainless steel screen as cathode. The effect of operating parameters such as current density, oil concentration, flotation time and coagulant concentration, on the performance of the electroflotation cell was examined. Oil removal reached 70% at optimum conditions; 75% in the presence of NaCl (3.5% by wt); and 99.5% in the presence of both NaCl and an optimum concentration of coagulant. Electrical energy consumption varied from 0.4 to 1.6 kWh m−3 according to experimental conditions. The performance of the oil removal process was also represented by a first order kinetic rate model. The constants obtained fit the experimental data well. Good correlation was found for the change in percentage oil removal within a wide range of operating parameters. 相似文献
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对辽河曙光采油厂稠油污水进行除硅处理研究。提出用全硅法测定ρ(硅)作为稠油污水除硅剂研究的评价方法,并与活性硅法测定值进行了对比。优选除硅剂单剂,考察复配除硅效果,研究了不同复配比及加剂量对除硅效果的影响。用显微镜观察了聚合氯化铝(PAC)除硅前后沉积物的形态并分析了除硅机理。实验证明,采用活性硅法测定ρ(硅)时MgO与PAC除硅效果好,常用熟石灰及氯化钙无明显除硅效果。采用全硅法测水中的ρ(硅)证明氧化镁对水中溶解硅去除效果好,对不溶性硅聚沉去除效果差,而PAC对水中不溶性硅有较好的聚沉去除作用;最佳m(MgO):m(PAC)=3:1,ρ(除硅剂)=400mg/L时,2种方法测得的J0(硅)均低于50mg/L,复配强化了除硅效果,满足现场除硅指标。氧化镁主要是表面水化层与Si0;一结合生成MgSiOa而去除硅,PAC可吸附SiO3^2-并破坏胶体硅稳定性,将溶解硅与不溶硅聚集沉降去除。 相似文献
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含油污水是油田的主要废水污染源,具有成分复杂难以处理的特点,而粉煤灰的化学成分和形态结构,决定其在废水处理中是一种廉价的吸附剂,已广泛用于对含油废水的处理,通过改性和与其他工艺联用可以提高粉煤灰对废水中石油烃的去除率。 相似文献
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根据酸性水装置的特点,采用油水分离器动态脱油取代原脱油罐沉降静态脱油,缩短了工艺流程,消除了酸性水大罐的泄漏,介绍了油水分离器在酸性水装置中的成功应用以及油水分离器的结构组成、工作过程、使用特点及工作原理。 相似文献