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文章介绍了超声波-电脱盐组合技术在延长石油榆林炼油厂原油加工中的应用情况,榆林炼油厂电脱盐采用超声电脱盐组合技术,能够完全替代破乳剂,达到脱后含盐小于3 mg/L、含水小于0.2%的理想效果。采用超声波电脱盐技术稳定了电脱盐操作,降低了原油加工成本,同时也提高了环保效益。 相似文献
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模拟现场电脱盐装置,选用市场常见的5种除铁剂对原油除铁效果进行评价,用20#钢进行腐蚀性能评价,并对原油中其他金属元素的脱除效果进行评价。结果表明,经过两级电脱盐装置处理后,原油的除铁率30.7%。除铁剂SD-622除铁效果最好,在加量为225μg/g时,除铁率为93.5%,铁含量降至3.1μg/g。除铁剂SD-622和A、B在-25℃冷储7 d后均未析出,凝点均在-25℃以下。SD-622的pH值在7左右,在5%的加量时,腐蚀速率为0.346 3 mm/a,试片光亮,无点蚀、片蚀、坑蚀现象,腐蚀量小。SD-622不仅能脱除原油中的铁元素,还能不同程度的螯合金属元素Na、Ca、Mg、Ni、V、Al,是一种多种金属复合脱除剂。 相似文献
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《应用化工》2022,(8)
模拟现场电脱盐装置,选用市场常见的5种除铁剂对原油除铁效果进行评价,用20#钢进行腐蚀性能评价,并对原油中其他金属元素的脱除效果进行评价。结果表明,经过两级电脱盐装置处理后,原油的除铁率30.7%。除铁剂SD-622除铁效果最好,在加量为225μg/g时,除铁率为93.5%,铁含量降至3.1μg/g。除铁剂SD-622和A、B在-25℃冷储7 d后均未析出,凝点均在-25℃以下。SD-622的pH值在7左右,在5%的加量时,腐蚀速率为0.346 3 mm/a,试片光亮,无点蚀、片蚀、坑蚀现象,腐蚀量小。SD-622不仅能脱除原油中的铁元素,还能不同程度的螯合金属元素Na、Ca、Mg、Ni、V、Al,是一种多种金属复合脱除剂。 相似文献
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随着国内原油品质逐渐劣质化,加工高含盐、高含水原油的比重变得越来越大,原油电脱盐效果不佳会影响到下游装置的生产运行。本文对原油电脱盐效果的影响因素进行了分析,包括电场强度、油水混合强度、操作温度、注水量及水质、破乳剂类型及用量等。结合现场生产实际情况,有针对性地对电脱盐运行进行优化。 相似文献
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针对绥中36-1原油评选出高效破乳剂,并采用两级电脱盐进行动态试验,确定了绥中原油电脱盐的最佳工艺条件为:温度142℃,注水量2.5%,场强16KVA,混合强度50KPa,破乳剂量75PPM。在此条件下一级脱后原油含盐6.2mg/L,含水0.25%;二级脱后原油含盐2.8mg/L,含水0.1%,二级罐排水含油146μg/g;绥中原油经过两级电脱盐,脱后原油含盐含水达到相关技术指标。 相似文献
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超声电脱盐联合预处理原油脱盐脱水 总被引:3,自引:0,他引:3
A technology of ultrasonic-electric united desalting and dewatering of crude oil is studied. The ultrasonic setup is designed to form a standing-wave field, which is more efficient for agglomeration of water particles. The desalting and dewatering results of the ultrasonic-electric united process are compared with those of the electric process. For high salt-contenting crude oil (40-70 mg·L ^-1), the salt content is still above 10.0 mg·L^-1 after crude oil has been treated by two-stage electric desalting process in refinery, which cannot meet the need of refinery. Ultrasonic-electric united process is a novel technology for treating the high salt-contenting oil. On the optimal operating conditions of the ultrasonic-electric united process, the salt content of crude oil can be reduced from 67 5 mg·L^-1 to 3.97 mg·L ^-1 by one-stage ultrasonic-electric united process, and the water content falls below 0.3% (by volume). The results show that the ultrasonic-electric united process is more effective than the electric process in high salt-contenting oil desalting. This technology should be useful in the refinery process. 相似文献
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中海油惠州炼化分公司常减压装置是国内单套处理能力最大(1200万吨/年)的常减压装置,这是一套针对加工海洋重质原油专门设计的装置,本装置电脱盐系统采用高速电脱盐和交直流电脱盐工艺的设计。应用表明在加工高比重、高酸值和高含盐的海洋原油时,此套电脱盐设施运行状况良好,脱盐、脱水率较高,达到了预期的效果,但运行期间电脱盐排水间接性出现排水带油、排水发黑现象。现结合实际情况分析给出电脱盐排水带油发黑的原因及解决措施,以便对于同行业给予参考和借鉴。 相似文献
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超声波破乳技术具有能耗低、效果好、无污染等特点,是一种新兴的原油破乳技术。针对陕北混合原油,采用超声波技术在陕西延长石油集团延安炼油厂、永坪炼油厂和榆林炼油厂的5套原油脱盐工艺进行了应用试验,应用结果表明:采用超声波技术后,可完全停止使用破乳剂,平均脱后原油含盐量由3—5 mg/L降低至3 mg/L以下;总排水含油量平均由242.5 mg/L降至76.6 mg/L,能够减少高含水污油的生成量;同时操作过程稳定,各级电脱盐罐电流明显降低,经济效益显著。该技术具有较好的推广应用前景。 相似文献
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通过对使用延安混合原油200×104t/a常压蒸馏装置电脱盐系统主要参数进行了分析,摸索出了适宜的操作条件。使电脱盐脱后含盐量降至3mg/L以下,达到了厂电脱盐脱后含盐控制指标要求,为下游的平稳生产创造了良好的条件。 相似文献
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Dilute dispersion/emulsion of ultrafine water droplets containing a variety of salts is usually present in crude oil. It is very useful to remove the water and the dissolved salts, so that corrosion, plugging, and fouling of equipment can be prevented. Electrical desalter is an effective method in crude oil desalting. In order to overcome the shortcomings of electrical desalting system, such as larger equipment volume, complex high tension electricity system, a new process of crude desalting that are based on hydrocyclone technology is designed. Preliminary industrial experiments have been carried out to prove the feasibility of desalting using hydrocyclone. The effects of several dimensionless units, such as Reynolds number, Euler number and pressure drop ratio were studied. An increase in inlet Reynolds number will decrease the pressure drop ratio. With an increase in inlet Reynolds number, Euler number increases gradually. Under the condition that Reynolds number of inlet is ranging from 5000 to 5800, the water concentrations can decrease from 5 vol% 8 vol% to less than 0.40 vol% and the salt concentrations is reduced from less than 8 mg L−1 to 3 mg L−1 after handled. 相似文献
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采用先进的交直流三级电脱盐装置,改造炼油厂前原油的脱盐工艺,实现了原油的深度脱盐,原油含盐由脱前〉200mg/L降到脱后的〈3.2mg/L以下,从而延长了常减压装置的开工周期,减少了催化裂化装置催化剂的耗量。 相似文献
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塔河分公司350万t/a重油改质项目投用以来,2#电脱盐装置脱后含盐、含水一直无法达到设计要求,为此塔河分公司组织进行电脱盐技术攻关,从电场、电极板、分配板、变压器等多个方面对电脱盐罐进行改造,脱盐脱水效果明显好转. 相似文献