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络合脱氮-低温吸附精制工艺在中国石油兰州石化公司炼油厂13.5万t/a润滑油白土补充精制装置上进行了应用。工艺改造包括新增1套以电沉降精制罐为主的络合脱氮精制设备及改进换热网络系统。改造后,可实现油品脱氮保硫、提高氧化安定性的目的;同时精制油收率达99.66%,比白土补充精制工艺高出1.04个百分点;系统粉尘质量浓度下降67.5%。
Complexed denitrification - low temperature adsorption purification process in the PetroChina Lanzhou Petrochemical Company 135,000 t / a lubricating oil clay purification device was applied. Process modification includes the addition of a set of refined refined tank-based complex denitrification refining equipment and improved heat exchange network system. After the transformation, it can achieve the purpose of denitrifying sulfur and improving the oxidation stability of the oil, meanwhile, the yield of refined oil reaches 99.66%, which is 1.04% higher than that of white clay; the dust concentration of system drops by 67.5%.