摘要
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7d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0.3463mm/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。
Simulated electric desalination device on site,evaluated the iron removal from residual oil by using five common iron remover in the market.The corrosion of 20#steel was evaluated and the removal of other metal elements in residual oil was evaluated.The result shows that the iron reduced 30.7%after two-stage treatment.The iron removal rate of SD-622 was the best.When SD-622 was 225μg/g,the iron removal rate was 93.5%,and the iron was reduced 3.1μg/g.Samples SD-622,A and B did not freeze after 7 d at-25℃,and the freezing points were below-25℃.The pH of SD-622 is about 7,and the corrosion rate is 0.346 3 mm/a when 5%is added.The coupon is bright,without pitting,sheeting,and the corrosion is little.SD-622 can not only remove iron,but also chelate other metal elements Na,Ca,Mg,Ni,V and Al from crude oil.It is a composite metal remover.
作者
张颖
李俊华
李俊莉
任海晶
李霁阳
王晓晖
ZHANG Ying;LI Jun-hua;LI Jun-li;REN Hai-jing;LI Ji-yang;WANG Xiao-hui(Shaanxi Research Design Institute of Petroleum and Chemical Industry,Xi’an 710054,China;Key Laboratory of Fine Chemicals Petroleum Shaanxi Province,Xi’an 710054,China)
出处
《应用化工》
CAS
CSCD
北大核心
2019年第8期1855-1857,1861,共4页
Applied Chemical Industry
基金
陕西省重点研发计划项目(2017GY-171)
2018年延长石油集团项目(ycsy2018ky-A-23)
关键词
原油
除铁剂
脱金属剂
催化剂中毒
crude oil
iron remover
metal remover
catalyst poisoning
