Exploitation and research of compositive product, i.e. Corrosion Inhibitor, was carried out by the mixing of the main component of corrosion inhibitor with surfactants, chelate, organic amine and liquid of prefabrication, then the optimal proportion was found out in order to build the best matching systems. The models among the anti-corrosive capacity of the inhibitor and operation conditions were established by polynary quadratic regression. The optimum operation conditions obtained by non-linear programming (NLP) are the following: the amount of the surfactants, chelate, organic amine and the liquid of prefabrication is 0.112 6, 0.010 2, 0.213 9 and 0.357 2 respectively. The verified experiment showed that the products under the optimum operation conditions had the better water-soluble capablity, slower corrosion rate and higher anti-corrosive capacity (up to over 99%).

The catalytic performance of self- developed non-hydrogen-dewaxing catalyst (FC-DB) was evaluated, and the hydrocracking tail oil was used as feed stock. The influence of reaction temperature and space velocity on the yield and pouring point of base oil was investigated. The relationships between yield, pouring point and operation conditions were determined by polynary quadratic regression, and the optimum operation conditions were determined by non-linear programming. The reaction temperature is 400 ℃ and space velocity is 1.2 h-1. At this time, the yield and pouring point of base oil respectively are 92.53% and -20 ℃, approximately dropping 53 ℃. The qualify of base oil obtained under above optimum operation conditions was analyzed, and the base oil can be used as premium lubricant base oil because of its high viscosity index, low pouring point, acidity and residue carbon.