System of dewaxing and hydrotreating catalysts for EURO diesel production

«Angarsk plant catalysts and organic synthesis» offers modern catalysts for hydrotreating and dewaxing, which represent a single integrated catalyst system for diesel fuel productions. Optimization of technology for CVM zeolite synthesis conducted to improve the efficiency c dewaxing catalyst. Stage of hydrothermal treatment of silica is introduced, resulting in an increase of reactivity of silica, a reduce the duration of crystallization, and zeolite crystallite sizes decrease. Comparative testing of dewaxing catalysts – own developed (DEP) and industrial (SGK-1) was conducted. It has been established that the zeolite promotion (Zn2+ or La3+) leed to increasing the activity of the dewaxing catalyst and allows to obtain high yields of diesel fraction at a lower temperature than when using an industrial SGK-1. The results of the pilot tests on real feed have shown that the usege of an integrated system of catalysts AGKD-400/DEP provides diesel fuel filterability limit temperature minus 38 °C and 35 ppm sulfur content for at least 720 hours. The proposed catalytic system can be implemented in many refineries to produce EURO diesel.

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