摘要
以中间基基础油为原料,采用自制的 WK-1脱氮剂和 WK-3吸附剂,考察了脱氮-吸附脱酸组合工艺的脱氮和吸附脱酸效果。实验结果表明,WK-1在剂油质最比为1/250时,脱氮率达到90.7%;WK-3在1.5%的投加量(ω)下,使精制基础油的酸值达到0.05 mgKOH/g 以下。在最优剂油比下对基础油进行脱氮-吸附脱酸组合精制,精制基础油的碱性氮化物从275.3μg/g 降低到23.8μg/g,酸值从0.131 mgKOH/g降低到0.045 mgKOH/g,精制基础油的氧化安定性从130 min提高到285 min,精制油的其它理化指标不变或有所改善。与单纯的白土精制工艺相比,脱氮-吸附脱酸组合工艺具有更高的脱氮和脱酸效率,废渣量减少,有较好的社会和经济效益。
The removal of basic nitrogen compounds and acidic compounds from an intermediate base lube base oil by denitrogenation-adsorptive deacidification combined process was studied using lab prepared WK-1 denitrogenation agent and WK-3 adsorbent. Test results showed that with an agent/oil mass ratio of 1/250,the nitrogen removal rate reached 90.7% ;with a WK-3 adsorbent dosage of 1.5 %, the acid number of refined lube base oil was less than 0. 05 mgKOH/g. When the combined process proceeded under the optimum conditions, the basic nitrogen content of refined oil was reduced from 275.3 μg/g to 23. 8 μg/g, the acid number was dropped from 0. 131 mgKOH/g to 0. 045 mgKOH/g, oxidation stability was improved（from 130 min to 285 min） and other properties of the refined oil were unchanged or improved slightly. As compared with the conventional clay contact process, said combined process exhibited better denitrogenation-deacidification efficiency and less waste disposal.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2008年第10期14-17,共4页
Petroleum Processing and Petrochemicals
关键词
润滑油基础油
脱氮
脱酸
氧化安定性
lubricant base oil
denitrogenation
deacidification
oxidation stability
